JP2002321434A - Ink supply device for stencil printing - Google Patents

Abstract

(57) [Summary] An ink supply device for stencil printing is provided.
The waiting time until it is detected that the ink bottle is empty is reduced so as not to cause an erroneous empty detection. When an inkless time during printing is set in an inkless time setting means and ink is supplied to an ink reservoir, a viscosity indication value indicating a viscosity of the ink supplied to the ink reservoir. Is acquired by the viscosity acquiring means 31, and the inkless time setting means 34 inputs the viscosity instruction value acquired by the viscosity acquiring means 31, and as the viscosity instruction value decreases, the shorter the inkless time during printing becomes shorter in the bottle empty. It is set in the detection means 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink supply device for stencil printing, and more particularly to an ink supply device for stencil printing that automatically supplies ink used for printing.

[0002]

2. Description of the Related Art Conventionally, a stencil sheet is formed by piercing a stencil sheet with a thermal head or the like based on manuscript information read from a sheet of paper or manuscript information obtained from electronic data prepared by a personal computer or the like. Stencil printing, in which the original information is printed by transferring the ink passed through the holes of the stencil to the supplied printing paper or the like, is widely and generally known.

[0003] As an apparatus used for such stencil printing, stencil making for making stencils by piercing original information on stencil paper and printing for transferring the original information using the stencils are performed in one apparatus. That is, a plate-making printing machine in which a plate-making machine and a printing machine are integrated, and a special-purpose printing machine that performs only the above printing are commercialized.

[0004] In such a stencil printing press,
2. Description of the Related Art In a printing press having a cylindrical plate cylinder on which a stencil is mounted on an outer periphery and automatically supplying ink to the plate cylinder, a cylindrical squeegee for applying ink to an inner peripheral surface of the plate cylinder is provided. A roller and a cylindrical doctor roller arranged in parallel with the squeegee roller with a gap through which ink passes between the squeegee roller and the squeegee roller are arranged inside the plate cylinder. A space having a wedge-shaped cross-section is formed as an ink reservoir.

[0005] In this ink reservoir, ink supplied from an ink bottle in which ink is stored is stored.
On the other hand, the ink stored in the ink storage section is supplied to the inner peripheral surface of the plate cylinder via the squeegee roller and is consumed.
The ink is sequentially supplied from the ink bottle to the ink reservoir so that a predetermined amount of ink is always maintained in the ink reservoir.

A mechanism for constantly maintaining a predetermined amount of ink in the ink reservoir is, for example, detecting whether or not the amount of ink in the ink reservoir has reached a predetermined predetermined amount, and determining that the ink amount has become less than the predetermined amount. In this case, an ink supply start signal is output, and when the predetermined amount is reached, an ink supply amount detection sensor that outputs an ink supply end signal is inserted into the ink reservoir, and an ink supply start signal is output from the ink supply amount detection sensor. A mechanism is provided to activate the ink supply pump to supply ink to the ink reservoir when output, and to stop the operation of the ink supply pump when an ink supply end signal is output from the ink reservoir detection sensor. Have been.

In addition, when the amount of ink in the ink reservoir becomes less than a predetermined amount and an ink supply start signal is output and the ink supply pump is operated, the ink bottle becomes empty and the supply of ink becomes impossible. Since the amount of ink in the ink reservoir does not increase and the amount of ink does not reach the predetermined amount indefinitely, in order to prevent such a situation, a predetermined amount is set after the ink supply start signal is output. If the amount of ink in the ink reservoir does not reach the predetermined amount even after the predetermined time has elapsed, it is determined that the ink bottle is empty, and a bottle empty signal is output to warn that the ink bottle is empty. And the operation of the device is interrupted,
This predetermined time is referred to as an inkless time.

The inkless time is set to a fixed value (time) that differs depending on the conditions. Specifically, the printing operation is temporarily stopped during the printing inkless time set for the ink supply during printing. Thereafter, a post-pause inkless time set for ink supply when the printing operation is started again, and a bottle replacement inkless time set for ink supply after ink bottle replacement are set.

In the inkless time during printing, the amount of ink in the ink reservoir becomes less than the first predetermined amount due to consumption of ink during printing, and the ink supply pump is operated to reduce the amount of ink to the second predetermined amount (the second predetermined amount). This is a time determined on the assumption that the ink bottle is empty when the ink bottle is emptied until it reaches an amount equal to or larger than the predetermined amount of 1 (hereinafter the same). That is, it is a time determined assuming a time required to increase the amount of ink that is less than the first predetermined amount until reaching the second predetermined amount.

The post-pause inkless time is defined as the time when the printing operation is stopped, the ink in the ink reservoir is left, and the amount of ink becomes smaller than the first predetermined amount due to evaporation of water in the ink. When the operation is started and the ink supply pump is operated to increase the amount of ink until reaching the second predetermined amount, this is a time determined on the assumption that the ink bottle is empty. In other words, the time is a time determined assuming a time required to increase the amount of the ink that has become smaller than the predetermined first predetermined amount until reaching the second predetermined amount.

The inkless time after bottle replacement is based on the assumption that an empty ink bottle is installed by mistake when the ink bottle becomes empty during printing and the operation of the apparatus is interrupted and the ink bottle is replaced. It is a time determined in advance. In other words, the inkless time after the bottle replacement indicates that the ink connection is poor due to the replacement of the ink bottle (the ink is filled between the ink stored in the ink bottle and the ink in the pipeline near the ink supply pump). (The poor connection caused by bubbles mixed into the ink due to the formation of an unoccupied space), and the amount of ink in the ink reservoir that has become less than the first predetermined amount reaches the second predetermined amount. It is a time determined assuming the time required to increase the time. Therefore, the inkless time after bottle replacement is set to be longer than the inkless time during printing.

Each of the above inkless times is set as a fixed value. When the inkless time remains in the ink bottle, the ink is supplied before it is determined that the ink bottle is empty. The ink amount in the ink reservoir is set to reach the second predetermined amount, so that it is not erroneously determined that the ink bottle is empty even though the ink normally remains in the ink bottle. However, for example, when operating the device in a place where the temperature is low, the temperature of the ink decreases, the viscosity of the ink increases,
If the amount of ink supplied per unit time due to the operation of the ink supply pump decreases, the inkless time will be reached before the ink in the ink reservoir reaches a predetermined amount, and the ink will remain empty in the ink bottle. There is a possibility that a signal will be output (the risk of erroneous detection).

Therefore, in the conventional inkless times, the ink in the ink reservoir is stored in the second ink reservoir so as to prevent the occurrence of erroneous detection caused by setting the inkless time too short.
A longer time is set to allow more time for the time required to increase until the predetermined amount is reached.

[0014]

By the way, the conventional inkless time during printing is a state in which the viscosity of the ink is increased and the amount of ink supplied per unit time from the ink supply pump is reduced (as described above). Even if it takes a longer time to detect that the ink bottle is empty), it is determined that the empty ink bottle can be detected so that false detection does not occur. For example, if the ink viscosity is low and the amount of ink supplied from the ink supply pump per unit time is large, even if the inkless time during printing is set to a shorter time, no erroneous detection will occur. In some cases, it can be accurately detected that the ink bottle is empty.
That is, in the conventional setting of the inkless time during printing,
If the ink bottle is emptied when the viscosity of the ink is low, there is a problem that the apparatus operator may needlessly wait a long time before it is detected that the ink bottle is emptied. There is also a demand for reducing the time required to detect that an ink bottle is empty even when the ink viscosity is high.

Further, the conventional inkless time after pausing is
As mentioned above, a long time (sometimes for days)
When the printing operation is resumed after the printing operation is paused, that is, the time is determined in consideration of the case where ink is supplied to the ink reservoir when the ink reservoir is almost depleted. When the amount of ink remaining in the ink reservoir for a short time is relatively large, even if the inkless time after the pause is set to a shorter time, it is accurately detected that the ink bottle has been emptied without causing erroneous empty detection. May be able to. That is, in the conventional setting of the inkless time after pausing, when the ink bottle is empty when the amount of ink remaining in the ink reservoir is relatively large, it is detected that the ink bottle is empty. Until then, there is a problem that the device operator is unnecessarily kept waiting for a long time. Further, there is a demand for shortening the time required to detect that the ink bottle is empty even when the pause time is long.

The inkless time after ink bottle replacement is set to detect that the ink bottle is empty when the replaced ink bottle supposed to be filled with ink is empty. There is a demand to reduce the time required to detect such a simple mistake.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a stencil printing machine capable of shortening a waiting time until it is detected that an ink bottle is empty so as not to cause an erroneous empty detection. It is an object to provide an ink supply device.

[0018]

SUMMARY OF THE INVENTION An ink supply device for stencil printing according to the present invention supplies ink for stencil printing to an ink reservoir for temporarily storing ink from an ink bottle to the inner peripheral surface of a plate cylinder. An ink supply means for supplying the ink for stencil printing from the ink bottle, and detecting whether or not the amount of ink in the ink reservoir has reached a predetermined first predetermined amount, and An ink supply amount detection unit that outputs an ink supply start signal when the amount is less than a predetermined amount, and outputs an ink supply end signal when the amount reaches a second predetermined amount; When the ink supply start signal is output, the elapsed time after the output of the ink supply start signal is measured, and the measured elapsed time is changed before the ink supply end signal is output. Beyond the rest time A bottle empty detection unit that outputs a bottle empty signal indicating that the ink bottle is empty, and operates the ink supply unit according to the input of the ink supply start signal, and inputs the ink supply end signal. An ink supply device for stencil printing, comprising: an operation stop control unit that stops the ink supply unit according to the following, and a viscosity acquisition unit that acquires a viscosity instruction value indicating a viscosity of the ink supplied to the ink reservoir. An inkless time setting unit that inputs the viscosity instruction value from the viscosity acquisition unit and sets the inkless time during printing to a shorter time as the input viscosity instruction value decreases. It is a feature.

The ink supply device for stencil printing of the present invention supplies an ink for stencil printing to an ink reservoir for temporarily storing the ink for printing from the ink bottle to the inner peripheral surface of the plate cylinder.
An ink supply means for supplying the ink for stencil printing from the ink bottle; and detecting whether or not the amount of ink in the ink reservoir has reached a predetermined first predetermined amount, and detecting the first position. An ink reservoir detection unit that outputs an ink supply start signal when the amount of the ink is less than a predetermined amount, and outputs an ink supply end signal when the amount of the ink reaches a second predetermined amount; When the supply start signal is output, the elapsed time after the output of the ink supply start signal is measured, and the measured elapsed time is determined before the ink supply end signal is output. When the time has passed, the bottle empty detection means for outputting a bottle empty signal indicating that the ink bottle is empty, and the ink supply means are operated in accordance with the input of the ink supply start signal, and the ink supply means is operated. An ink supply device for stencil printing, comprising: an operation stop control unit that stops the ink supply unit according to an input of a supply end signal, and obtains a viscosity instruction value indicating a viscosity of ink supplied to the ink reservoir. The viscosity obtaining means, and inputting the viscosity instruction value from the viscosity obtaining means, and changing the input power during printing input to the ink supply means when operating the ink supply means as the input viscosity instruction value increases. Input power control means for controlling the power to increase.

The ink supply device for stencil printing of the present invention supplies an ink for stencil printing to an ink reservoir for temporarily storing ink from the ink bottle to the inner peripheral surface of the plate cylinder.
An ink supply means for supplying the ink for stencil printing from the ink bottle; and detecting whether or not the amount of ink in the ink reservoir has reached a predetermined first predetermined amount, and detecting the first position. An ink supply detection signal for outputting an ink supply start signal when the amount is less than the fixed amount, and outputting an ink supply end signal when the amount reaches a second predetermined amount, and a printing operation is stopped. When the ink supply start signal is output when the printing operation is started again after that, the elapsed time after the output of the ink supply start signal is measured, and the measured elapsed time is determined by the ink supply start time. A bottle empty detecting means for outputting a bottle empty signal indicating that the ink bottle is empty before the end signal is output and exceeding the inkless time after pausing, and an input of the ink supply start signal; West An operation stop control unit for operating the ink supply unit and stopping the ink supply unit according to the input of the ink supply end signal, wherein the printing operation is stopped. And a pause time acquisition unit for acquiring a pause time instruction value indicating a pause time from when the print operation is started again, and the pause time instruction value is input from the pause time acquisition unit, and the input pause time instruction value is input. And an inkless time setting means for setting the post-pause inkless time to a shorter time as the distance becomes smaller.

The ink supply device for stencil printing of the present invention supplies an ink for stencil printing to an ink reservoir for temporarily storing ink from an ink bottle to the inner peripheral surface of the plate cylinder.
An ink supply means for supplying the ink for stencil printing from the ink bottle; and detecting whether or not the amount of ink in the ink reservoir has reached a predetermined first predetermined amount, and detecting the first position. An ink supply detection signal for outputting an ink supply start signal when the amount is less than the fixed amount, and outputting an ink supply end signal when the amount reaches a second predetermined amount, and a printing operation is stopped. When the ink supply start signal is output when the printing operation is started again after that, the elapsed time after the output of the ink supply start signal is measured, and the measured elapsed time is determined by the ink supply start time. A bottle empty detecting means for outputting a bottle empty signal indicating that the ink bottle is empty before the end signal is output and exceeding the inkless time after pausing, and an input of the ink supply start signal; West An operation stop control unit for operating the ink supply unit and stopping the ink supply unit according to the input of the ink supply end signal, wherein the printing operation is stopped. And a pause time acquisition unit for acquiring a pause time instruction value indicating a pause time from when the print operation is started again, and the pause time instruction value is input from the pause time acquisition unit, and the input pause time instruction value is input. Input power control means for controlling so as to increase the post-pause input power input to the ink supply means when the ink supply means is operated as the size increases.

The ink supply device for stencil printing according to the present invention supplies an ink for stencil printing to an ink reservoir for temporarily storing ink from the ink bottle to the inner peripheral surface of the plate cylinder.
An ink supply means for supplying the ink for stencil printing from the ink bottle; and detecting whether or not the amount of ink in the ink reservoir has reached a predetermined first predetermined amount, and detecting the first position. The ink bottle is replaced with an ink storage amount detection unit that outputs an ink supply start signal when the amount is less than the fixed amount and outputs an ink supply end signal when the amount reaches a second predetermined amount. When the ink supply start signal is first output after the ink supply is started, the elapsed time after the ink supply start signal is output is measured, and the measured elapsed time is used to output the ink supply end signal. before,
When the inkless time has passed after replacing the ink bottle,
Bottle empty detection means for outputting a bottle empty signal indicating that the ink bottle is empty, and operating the ink supply means according to the input of the ink supply start signal,
An ink supply device for stencil printing, comprising: an operation stop control unit that stops the ink supply unit in accordance with the input of the ink supply end signal, wherein the bottle replacement detection signal is generated by detecting that the ink bottle has been replaced. And an input power control means for inputting the bottle replacement detection signal and operating the ink supply means to increase the input power after the ink bottle replacement input to the ink supply means. Are provided.

The second predetermined amount and the first predetermined amount may be determined to be different from each other, or may be determined to be equal to each other.

The indicated viscosity value is not necessarily a value indicating the viscosity itself, and may be any value as long as the value can indicate the viscosity. For example, since the viscosity changes according to the temperature, the temperature of the ink may be used as the viscosity indication value.

The pause time indication value does not necessarily need to be a value indicating the pause time itself, and may be any value as long as it can indicate the pause time. For example, the count number of pulses of a fixed cycle may be used as the pause time instruction value.

The stop and start of the printing operation may be any stop and start that can be regarded as substantially the stop and start of the print operation. For example, the stop and start of the operation of transferring ink to printing paper, Stopping and starting the rotation of the plate cylinder and turning off and on the power to the apparatus can be regarded as stopping and starting the printing operation. The printing operation is stopped when a predetermined printing end condition set in advance in the apparatus is satisfied, and the printing operation is started when the user inputs a print start command to the apparatus.

As the bottle replacement detection signal, any value may be used as long as it can represent two states of "both bottle replacement" and "no bottle replacement". For example, 0 and 1
May be used to indicate whether a bottle has been replaced or not, based on a difference in the number of bottles, or a difference in voltage between 0V and 5V.

The input power means energy per unit time input for driving the ink supply means. For example, if the ink supply means is driven by electricity, the input power is drive power (W).

[0029]

According to the first ink supply device for stencil printing of the present invention, when the inkless time is set during printing and the ink is supplied to the ink reservoir, the ink is supplied to the ink reservoir. A viscosity indication value indicating the viscosity of the ink is obtained, and as the viscosity indication value decreases, the inkless time during printing is set to a shorter time. As compared with the case where the viscosity of the ink bottle is set as a fixed value in accordance with the high viscosity, it is possible to reduce the waiting time until it is detected that the ink bottle is empty, while avoiding erroneous detection. .

That is, the amount of ink supplied per unit time by the ink supply means increases when the viscosity of the ink is low, and when the amount of ink supplied per unit time is large, the amount of ink in the ink reservoir until the ink reaches a predetermined amount. If the ink supply time becomes short and the ink does not reach the predetermined amount within the ink supply time, it can be determined that the ink bottle is empty. In other words, the time required to detect that the ink bottle is empty can be shortened as the ink supply amount per unit time increases. Therefore, by setting the inkless time during printing to a shorter time as the viscosity of the ink decreases, the waiting time until it is detected that the ink bottle is empty can be reduced. Note that the inkless time during printing determined in this way is set by giving a longer time to allow a longer time for detecting that the ink bottle is empty, as in the related art. Erroneous detection can be avoided.

According to the second ink supply apparatus for stencil printing of the present invention, when the inkless time during printing is set and the ink is supplied to the ink reservoir, the ink supplied to the ink reservoir is controlled. A viscosity indication value indicating the viscosity is obtained, and as the viscosity indication value increases, the input power during printing input to the ink supply means when operating the ink supply means is configured to be increased. Compared to when the medium inkless time was set as a fixed value according to the state where the viscosity of the ink was high,
It is possible to reduce the waiting time until it is detected that the ink bottle is empty, while avoiding an erroneous empty detection.

In other words, as the viscosity of the ink increases, the ink supply efficiency deteriorates due to the resistance of the ink flowing in the pipeline, and the amount of ink supply per unit time decreases. However, according to the second ink supply device of the present invention, as the viscosity of the ink increases, the input power during printing input to the ink supply means increases.
Even when the ink viscosity is high, the ink supply amount per unit time can be maintained at the same amount as when the ink viscosity is low, and the ink bottle is emptied when the ink viscosity is low. The fixed inkless time during printing can be adopted to match the shorter time required to detect the fact that the inkless time during printing can be shorter than before. As a result, the waiting time until it is detected that the ink bottle is empty can be reduced. Note that the inkless time during printing determined in this way is set by giving a longer time to allow a longer time for detecting that the ink bottle is empty, as in the related art. Erroneous detection can be avoided.

According to the third ink supply device for stencil printing of the present invention, when the inkless time is set after the pause and the ink is supplied to the ink reservoir, the printing operation is stopped and then the printing is performed again. Since a pause time indication value indicating a pause time until the operation is started is obtained, and the pause-less inkless time is set to a shorter time as the pause time indication value decreases, conventionally, Compared to the case where the inkless time after pausing is set as a fixed value corresponding to a long pausing time, the waiting time until detecting that the ink bottle is empty is reduced while avoiding erroneous empty detection. be able to.

That is, the amount of ink that must be supplied before the amount of ink in the ink reservoir reaches a predetermined amount decreases when the pause time is short, and the amount of ink that must be supplied decreases when the amount of ink that must be supplied decreases. The ink supply time until reaching the predetermined amount becomes short, and if the ink does not reach the predetermined amount within this ink supply time, it can be determined that the ink bottle is empty. That is, as the pause time becomes shorter, the time required to detect that the ink bottle is empty can be shortened.
Therefore, by setting the post-pause inkless time to a shorter time as compared with the related art as the pause time becomes shorter, it is possible to reduce the waiting time until it is detected that the ink bottle is empty. . In addition, the inkless time after rest determined in this way is set by giving a longer time to allow a longer time for detecting that the ink bottle is empty, as in the conventional case. Erroneous detection can be avoided.

According to the fourth ink supply apparatus for stencil printing of the present invention, when the inkless time is set after the pause and the ink is supplied to the ink reservoir, the printing operation is stopped and then the printing is performed again. A pause time indication value indicating a pause time until the operation is started is acquired, and as the pause time indication value increases, the post-pause input power input to the ink supply means when operating the ink supply means is increased. In this way, it is possible to detect that the ink bottle has been emptied while avoiding erroneous detection of empty, compared to the case where the inkless time after pausing was conventionally set as a fixed value for a long pause. It is possible to reduce the waiting time before the operation.

That is, the amount of ink that must be supplied before the amount of ink in the ink reservoir reaches a predetermined amount increases when the downtime is long, and is required to detect that the ink bottle is empty. Time is also longer. However, according to the fourth ink supply device of the present invention, as the pause time indication value increases, the post-pause input power input to the ink supply means increases. Even when the amount of ink that needs to be supplied is large, the downtime is short and ink can be supplied to the ink reservoir in the same time as when the amount of ink that needs to be supplied to the ink reservoir is small. Ink after pause can be set to a fixed post-pause inkless time that is shorter than required to detect when the ink bottle is empty when the pause is short. The rest time can be set to a shorter time than before, and as a result, the waiting time until it is detected that the ink bottle is empty can be reduced. In addition, the inkless time after rest determined in this way is set by giving a longer time to allow a longer time for detecting that the ink bottle is empty, as in the conventional case. Erroneous detection can be avoided.

According to the fifth ink supply device for stencil printing of the present invention, when the inkless time is set after the ink bottle is replaced and the ink is supplied to the ink reservoir, the ink bottle is replaced. Since it is configured to obtain a bottle replacement detection signal indicating that, and to increase the input power after ink bottle replacement input to the ink supply means when operating the ink supply means based on the bottle replacement detection signal, The ink supply amount per unit time after replacing the ink bottle is increased, and the time required to detect that the ink bottle is empty can be shortened. As a result, the inkless time after replacing the ink bottle can be reduced. Can be set to a shorter time than before. In addition, the inkless time after the bottle replacement determined in this manner is given by giving a longer time to allow more time for detecting that the ink bottle is empty as in the related art. Since it can be set, erroneous detection can be avoided.

Therefore, the waiting time until it is detected that the ink bottle is empty can be shortened while avoiding erroneous empty detection.

It is to be noted that, by adopting the above-described configurations, the emptying of the ink bottle is more accurately detected, and the emptying of the ink bottle is not accurately detected. It is expected that the stoppage is delayed and the amount of ink in the ink reservoir is greatly reduced, and the effect of preventing blurring caused by the reduced amount of ink transferred to the printed matter is also expected.

[0040]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an embodiment to which an ink supply device in stencil printing of the present invention is applied, and FIG. 2 is a diagram showing a relationship between a viscosity instruction value during printing and an empty detection elapsed time. FIG. 3 is a diagram showing the relationship between the viscosity instruction value and the input power during printing, and FIG. 4 is a diagram showing the amount of ink remaining in the ink reservoir when the printing operation is restarted after the printing operation is stopped. is there. FIG. 5 is a diagram showing the relationship between the viscosity indication value related to the inkless time after pausing and the elapsed time of empty detection, and FIG. FIG.

In the ink supply apparatus 100 according to the embodiment of the present invention, the amount of ink in the ink reservoir 3 for temporarily storing ink for stencil printing during the supply of the ink to the plate cylinder 2 described later is predetermined. It is detected whether or not the lower limit predetermined amount, which is the first predetermined amount, has been reached. If the lower limit predetermined amount has been reached, an ink supply start signal is output. When the ink reaches an upper limit predetermined amount which is a predetermined second predetermined amount, the ink storage amount detecting means 21 for outputting an ink supply end signal, the stencil printing ink is used as the stencil printing ink. Ink supply means 1 for supplying the stored ink bottle 1 to ink reservoir 3
0 and the elapsed time after the output of the ink supply start signal is measured, and the measured elapsed time is set to the respective inkless times (inkless time during printing, inkless time before printing the ink supply end signal). A bottle empty detecting means 22 for outputting a bottle empty signal indicating that the ink bottle is empty when the inkless time after the pause and the inkless time after the ink bottle replacement are exceeded, and the input of an ink supply start signal. Operates the ink supply means 10 according to
An operation stop control unit 23 for stopping the ink supply unit 10 according to the input of the ink supply end signal is provided.

The ink supply device 100 has a viscosity obtaining means 31 for obtaining a viscosity indication value indicating the viscosity of the ink supplied to the ink reservoir 3, and the printing operation is restarted after the printing operation is stopped. A suspension time acquisition unit 32 for acquiring a suspension time instruction value indicating the suspension time up to, a bottle exchange detection unit 33 for acquiring a bottle exchange detection signal indicating that the ink bottle has been exchanged, and a viscosity instruction from the viscosity acquisition unit 31. As the input viscosity indication value becomes smaller, the inkless time during printing is set to a shorter time, or a pause time indication value is inputted from the pause time acquisition means 32, and the inputted pause As the time indication value becomes smaller, the inkless time after pausing is set to a shorter time, or a bottle replacement detection signal is input from the bottle replacement detecting means 33. To a inkless time setting means 34 and setting the inkless time after ink bottle replacement, further, the viscosity readings from the viscosity acquisition means 31,
A pause time indication value is input from the pause time acquisition means 32, and a bottle replacement detection signal is input from the bottle replacement detection means 33. When the input viscosity indication value increases, the ink supply pump 10 operates during printing. To increase the input power during printing input to the ink supply means,
As the input pause time instruction value increases, the post-pause input power input to the ink supply means when the ink supply pump 10 is operated after the pause is increased,
An input power control means 35 is provided for inputting a bottle replacement detection signal and operating the ink supply pump 10 after the ink bottle replacement to increase the input power after ink bottle replacement which is input to the ink supply means.

A cylindrical squeegee roller 4 for applying ink to the inner peripheral surface of the plate cylinder 2 and a gap for allowing ink to pass between the squeegee roller 4 and the cylindrical squeegee roller 4 are arranged in parallel with the squeegee roller. Cylindrical doctor roller 5
Are arranged inside the plate cylinder 2 such that their respective central axes are parallel to the central axis of the plate cylinder 2, and a space having a wedge-shaped cross-sectional shape sandwiched between the squeegee roller 4 and the doctor roller 5 is formed. An ink reservoir 3 is provided. Next, the operation of the above embodiment will be described.

<First Embodiment> First, the operation of the ink supply device 100 during printing will be described mainly with respect to the setting of the inkless time during printing.

During printing, the ink in the ink reservoir 3 is applied to the plate cylinder 2 via the squeegee roller 4 and printing is performed, so that the ink is consumed. To compensate for the consumed ink, Supply of ink to the ink reservoir 3 is repeatedly performed as follows.

That is, the tip of the detection probe 21A of the ink reservoir detecting means 21 inserted into the ink reservoir 3 when the ink in the ink reservoir 3 is consumed is separated from the ink in the ink reservoir 3, and Is detected to be less than the lower limit predetermined amount, an ink supply start signal is output from the ink storage amount detecting means 21. The operation stop control means 23 which has received this signal activates the pump drive power supply circuit 41 to start supplying the input power to the ink supply pump 10, whereby the ink supply pump 10
Is operated, and the ink in the ink bottle 1 is supplied to the ink reservoir 3 through the ink supply conduit.

Next, by the supply of ink by the ink supply pump 10, the amount of ink in the ink reservoir 3 increases, and the tip of the detection probe 21A comes into contact with the ink. Is detected, the ink supply end signal is output from the ink storage amount detecting means 21. Operation stop control means 23 receiving this signal
Operates the pump drive power supply circuit 41 to cut off the supply of input power to the ink supply pump 10, stops the operation of the ink supply pump 10, and stops the supply of ink to the ink reservoir 3.

The supply and the stop of the ink to the ink reservoir 3 are controlled by detecting that the tip of the detection probe 21A has separated from or contacted the ink.
When the tip of the detection probe 21A separates from the ink in the ink reservoir 3, the viscosity of the ink causes
When the tip of the detection probe 21A comes into contact with the ink in the ink reservoir 3, the tip of the detection probe 21A comes into contact with the substantially flat surface of the ink. I do. Therefore, there is a difference in the amount of ink in the ink reservoir 3 when the tip of the detection probe 21A separates from the ink in the ink reservoir 3 and when the tip comes into contact with the ink. Consumption and supply are repeated.

The viscosity acquiring means 31 uses a value obtained by measuring the temperature in the vicinity of the ink reservoir 3 by the temperature sensor 6 instead of directly measuring the viscosity as a viscosity indication value indicating the viscosity of the ink supplied to the ink reservoir 3. Obtained as an instruction value. When a value obtained by directly measuring the viscosity is used, a roller for measuring the viscosity (see JP-A-10-16372) can be used.

The inkless time setting means 34 receives the viscosity indication value from the viscosity obtaining means 31 and stores the inkless time during printing corresponding to the inputted viscosity indication value internally according to the viscosity indication value. Selected during printing, and the selected time value is used as the bottle empty detecting means 22.
Set to.

The bottle empty detector 22 receives the ink supply start signal output from the ink reservoir detector 21 and
The input of this signal is used as the starting point of time measurement, and the elapsed time is measured. If the elapsed time exceeds the set inkless time during printing before the ink supply end signal is output, the ink bottle is opened. It outputs a bottle empty signal indicating that it is empty.

When the bottle empty signal is output, the operation of the apparatus is interrupted, and the display of the ink bottle empty indicator 50 is turned on. The elapsed time is reset each time an ink supply end signal is output from the ink storage amount detecting means 21.

Here, the relationship between the indicated viscosity value and the inkless time during printing will be described.

When the ink bottle becomes empty during printing, the elapsed time until it can be determined that the ink bottle is empty, that is, the ink in the ink reservoir 3 after the ink supply start signal is output. The elapsed time until the upper limit predetermined amount is reliably exceeded (hereinafter referred to as “empty detection elapsed time”) is determined when the ink remains in the ink bottle.
Is less than the predetermined lower limit, an ink supply start signal is output, and the supply of ink is started.
Is a time obtained by adding some extra time to the elapsed time (hereinafter referred to as ink supply continuation time) from when the ink reaches the upper limit predetermined amount and the ink supply end signal is output. The time is considered to be approximately the same time. Then, as the viscosity instruction value decreases (the viscosity decreases), the ink supply amount per unit time to the ink reservoir 3 increases, and the ink supply continuation time decreases, so that the viscosity instruction value decreases. Therefore, the sky detection elapsed time is shortened. The relationship between the indicated viscosity value and the elapsed time of the empty detection is shown by a solid line I in FIG. 2 where the horizontal axis represents the indicated viscosity value and the vertical axis represents the elapsed elapsed time of the empty detection.

For example, when the ink bottle is emptied when the viscosity indication value is large (the viscosity of the ink is high) n1, it takes time t1 to detect that the ink bottle is empty. In order to know that the ink bottle is empty when the ink bottle is empty at a value n2 where the viscosity indication value is small (the viscosity of the ink is low), t2
Since the empty detection elapsed time of (t2 <t1) is sufficient, when the viscosity of the ink is low, it is possible to know earlier that the ink bottle is empty. The sky detection elapsed time (solid line I in FIG. 2), which becomes shorter as the viscosity decreases, is
This is the time from when the ink supply start signal is output to when the amount of ink in the ink reservoir 3 has definitely exceeded the predetermined amount, so that the inkless time during printing can be set to a time equivalent to this empty detection elapsed time. . Note that the inkless time during printing determined in this manner is determined by giving a longer time to allow the time required for detecting that the ink bottle has been emptied to be longer as in the past. Error detection does not occur.

Therefore, conventionally, a fixed setting is made according to the case where the ink viscosity is high (for example, n3) as shown in FIG.
The printing inkless time indicated by the time equivalent to the empty detection elapsed time t3 indicated by the broken line J in the drawing is changed from the printing inkless time (solid line in FIG. 2) to a shorter time as the viscosity of the ink decreases. (Equivalent to the empty detection elapsed time indicated by I)), and the waiting time until detecting that the ink bottle is empty is shortened so as not to cause an erroneous empty detection. be able to.

The relationship between the indicated viscosity value and the inkless time during printing is not limited to the case where the inkless time setting means 34 stores the table as a printing time table.
It may be stored by another method such as storing as an expression.

<Second Embodiment> Instead of setting the inkless time during printing according to the viscosity indication value as described above, the inkless time during printing set in the bottle empty detecting means 22 is the same as the conventional inkless time. Similarly, the input power during printing when the ink supply pump 10 is operated may be controlled by the input power control unit 35 in accordance with the viscosity instruction value input from the viscosity acquisition unit 31.

The relationship between the indicated viscosity value, the input power during printing, and the fixed inkless time during printing will be described below.

When the indicated viscosity value is large (the viscosity of the ink is high), the efficiency of ink supply by the ink supply pump 10 is reduced. However, by increasing the input power during printing to the ink supply pump 10, the ink supply It is possible to control the empty detection elapsed time to be constant regardless of the viscosity. The state of this control will be described with reference to FIG. 3 showing the relationship between the viscosity instruction value, the input power during printing, and the elapsed time of empty detection. The horizontal axis in FIG. 3 indicates the viscosity instruction value, and the vertical axis indicates the input power and the elapsed time. The solid line P indicates the relationship between the viscosity instruction value and the input power during printing that increases as the viscosity instruction value increases. The blank detection elapsed time which is shown and is constant regardless of the viscosity indication value is shown by a solid line H.

The fixed empty detection elapsed time indicated by the solid line H is the time from when the ink supply start signal is output until the ink in the ink reservoir 3 reliably exceeds the upper limit predetermined amount.
This sky detection elapsed time can be set as the inkless time during printing. This inkless time during printing is a fixed value set according to the case where the ink viscosity is low, and the conventional inkless time during printing which is set as a fixed value according to the case where the ink viscosity is high (see FIG. 3). (Shown by a time equivalent to the sky detection elapsed time shown by the broken line G).

Further, the inkless time during printing determined in this manner is a longer time which gives more time to the time required to detect that the ink bottle is empty, as in the related art. Since the setting is given, the erroneous empty detection does not occur, and the waiting time until it is detected that the ink bottle is empty can be shortened so that the erroneous empty detection does not occur.

The relationship between the viscosity instruction value and the input power during printing is stored as a printing input power table in the input power control means 35, and the input power control means 35 Accordingly, control is performed such that the input power during printing corresponding to the value selected from the table is output from the pump drive power supply circuit 41.

Even if the ink bottle 1 becomes empty while supplying ink to the ink reservoir, printing is continued using the ink in the ink reservoir until the inkless time during printing is reached. However, if the set inkless time during printing is too long, after the ink bottle 1 becomes empty, until the bottle empty signal is output and the operation of the apparatus is interrupted, the ink in the ink reservoir section is maintained due to the continuation of printing. The amount is greatly reduced, the amount of ink applied to the plate cylinder is reduced, and the amount of ink transferred to the printed matter is reduced, which may cause blurring in printing. However, since the set inkless time during printing can be set to a shorter time than the conventional inkless time, an effect can also be expected in preventing the blurring.

The relationship between the indicated viscosity value and the input power during printing is not limited to the case where the input power table during printing is stored, but may be stored by another method such as storing it as an equation. Good.

<Third Embodiment> Next, the operation of the ink supply apparatus 100 when the printing operation is stopped and the printing operation is started again will be described mainly with respect to the setting of the inkless time after pausing.

The post-pause inkless time, which is set when the printing operation is stopped and then started again, is performed after the printing operation is stopped, the printing operation is started again, and the ink supply pump is operated to operate the ink supply pump. Is set to detect that the ink bottle is empty when the amount of ink is increased until the second predetermined amount is reached, and the ink supplied until the ink in the ink reservoir 3 reaches the upper limit predetermined amount. When the amount is small (when the pause time is short and the time required to detect that the ink bottle is empty is short), a shorter time is set.

After the printing operation of the ink supply device 100 is stopped, the printing operation is started again. When it is detected at this start that the ink is not in contact with the detection probe 21A, the ink storage amount detecting means 21 A supply start signal is output. The operation stop control means 23, which has received the ink supply start signal, drives the ink supply pump 10 via the pump drive power supply circuit 41 to start supplying ink to the ink reservoir 3.

On the other hand, the pause time obtaining means 32 determines the time from when the printing operation is stopped to when the printing operation is started again, after the rotation of the plate cylinder 2 of the ink supply device 100 is stopped. The pause time indication value is obtained by measuring the time until the rotation is started again, and the inkless time setting means 34, into which the pause time indication value output from the pause time acquisition means 32 is input, is stored internally. A post-pause inkless time is selected from the post-pause time table in accordance with the set pause time, and the selected time is used as the bottle empty detection means 2.
Set to 2.

The bottle empty detecting means 22 compares the set inkless time after the pause with the elapsed time after the ink supply start signal is output, and determines the elapsed time before the ink supply end signal is output. And outputs a bottle empty signal when the inkless time has passed after the pause.

Here, the relationship between the pause time instruction value and the post-pause inkless time will be described.

If the pause time is short when printing is restarted after printing is once stopped, the ink in the ink reservoir 3 decreases as shown in FIG. When the pause time is long, the amount of ink in the ink reservoir 3 is further reduced to the amount of ink Q2. As the pause time indication value decreases, the amount of ink supplied until the ink in the ink reservoir 3 reaches a predetermined amount decreases. The horizontal axis indicates the pause time indication value and the vertical axis indicates the sky detection elapsed time. As shown by the solid line I ', the idle detection elapsed time can be shortened as the pause time indication value becomes shorter.

For example, when the ink bottle is empty during the pause time k1 where the pause time instruction value is large (the pause time is long), it takes time for the empty detection elapsed time t4 to know that the ink bottle is empty. However, when the ink bottle is empty at k2 where the pause time instruction value is small (the pause time is short), the empty detection elapsed time t5 (t5 <t4) is sufficient. It can detect that it is empty more quickly,
The sky detection elapsed time (solid line I 'in FIG. 5), which is reduced as the pause time becomes shorter, can be set as the post-pause inkless time.

Therefore, the post-pause inkless time (the sky detection elapsed time t6 indicated by the broken line J 'in FIG. 5) which has been conventionally fixedly set when the pause time indication value is large (for example, k3). 5 is a shorter post-pause inkless time (indicated by the solid line I 'in FIG. 5) as compared to the equivalent time.
(Shown by the same time as the sky detection elapsed time shown by), so that the waiting time until detecting that the ink bottle is empty is shortened so as not to cause an erroneous sky detection. be able to.

<Fourth Embodiment> Further, instead of setting the inkless time after the bottle empty detecting means 22 has been stopped in accordance with the pause time instruction value input from the pause time acquiring means 32, the bottle empty detecting means 22 has The set inkless time during printing is set to a fixed value, and the ink supply pump 10 is controlled in accordance with the pause time instruction value input from the pause time acquisition unit 32.
May be controlled by the input power control means 35 after the pause when the is operated.

The relationship between the pause time instruction value, the post-pause input power, and the fixed post-pause inkless time will be described below.

As the pause time indication value increases, the amount of ink supplied until the ink in the ink reservoir 3 reaches a predetermined amount increases. However, by increasing the input power to the ink supply pump 10 by that amount, Irrespective of the pause time indication value, the ink supply amount per unit time can be made constant when the pause time indication value is short.

FIG. 6 shows the relationship between the pause time instruction value, the post-pause input power, and the idle detection elapsed time when the horizontal axis is the pause time instruction value and the vertical axis is the post-pause input power and idle detection elapsed time. The relationship between the pause time instruction value and the post-pause input power that increases as the pause time instruction value increases is shown by a solid line P ′, and the pause time instruction value is constant regardless of the pause time instruction value. The relationship with the elapsed sky detection time is shown by a solid line H '.

In the same manner as described above, this fixed sky detection elapsed time can be set as the post-pause inkless time, and the post-pause inkless time is the time set when the pause time indication value is short. The conventional post-pause inkless time fixedly set when the pause time indication value is long (indicated by a time equivalent to the sky detection elapsed time indicated by a broken line G 'in FIG. 6). Since the time can be set to be shorter than in the case of, it is possible to shorten the waiting time until it is detected that the ink bottle is empty, so as not to cause an erroneous empty detection.

The relationship between the pause time instruction value and the post-pause input power is stored in the input power control means 35 as a post-pause power table, and the input power control means 35 In response to this, control is performed so that the post-pause input power corresponding to the value selected from the post-pause input power table is output from the pump drive power supply circuit 41.

<Fifth Embodiment> Next, the operation of the ink supply device 100 when the ink bottle is replaced will be described mainly with respect to the input power after the replacement of the ink bottle and the inkless time after the replacement of the ink bottle.

The inkless time after ink bottle replacement set when the ink bottle is replaced is a fixed value.
The setting is performed to detect that an empty ink bottle is installed by mistake when the ink bottle is empty and the operation of the apparatus is interrupted and the ink bottle is replaced when the ink bottle is replaced.

A bottle empty signal is output during printing, and when printing is interrupted and the ink bottle 1 is replaced, the bottle replacement sensor 33A of the bottle replacement detecting means 33 detects that the bottle has been replaced. A bottle replacement detection signal is output to the input power control means 35 and the inkless time setting means 34.

The inkless time setting means 34 which has received the bottle replacement detection signal sets the inkless time in the bottle empty detecting means 22 after the ink bottle replacement.

The input power control means 35 having received the bottle replacement detection signal sets the pump drive power supply circuit 41 so that the input power supplied from the pump drive power supply circuit 41 to the ink supply pump 10 is increased from the normal power. Control.

When the operation of the apparatus is resumed after the replacement of the ink bottle 1, the ink supply start signal is detected by the ink supply start signal because the ink in the ink storage section 3 is separated from the detection probe 21A of the ink storage amount detection means 21. The information is output from the means 21 to the operation stop control means 23 and the empty bottle detecting means 22.

The bottle empty detecting means 22 having received the ink supply start signal compares the set inkless time after the ink bottle replacement with the elapsed time after the output of the ink supply start signal. If the inkless time exceeds after the ink bottle is replaced before the ink supply end signal is output, a bottle empty signal is output.

The operation stop control means 23, which has received the ink supply start signal, activates the pump drive power supply circuit 41 to start supplying the input power to the ink supply pump 10 after ink bottle replacement. At this time, the input power after ink bottle replacement output from the pump drive power supply circuit 41 is increased by the control of the input power control means 35 from the power when the ink bottle is not replaced.

Since the input power supplied to the ink supply pump 10 after ink bottle replacement is increased from the power at the time of non-ink bottle replacement, the amount of ink supplied to the ink reservoir 3 per unit time increases. When the ink is stored in the ink bottle, the ink amount in the ink reservoir 3 reaches the predetermined amount earlier than before, that is, when the ink in the ink bottle is empty, it is determined that the ink bottle is empty. Detection can be performed quickly (the sky detection time can be shortened).

Therefore, the inkless time after the ink bottle replacement is set to be shorter than the conventional inkless time after the ink bottle replacement which is set when the ink supply pump is operated at the normal input power. The waiting time until it is detected that the ink bottle is empty can be shortened so as not to cause an erroneous empty detection.

<Other Embodiments> In each of the above embodiments, the means for setting the inkless time during printing according to the viscosity of the ink, and the control of the input power during printing to the ink supply means according to the viscosity of the ink. Means for setting the post-pause inkless time according to the pause time of the printing operation, means for controlling the post-pause input power to the ink supply means according to the pause time of the printing operation, and replacement of the ink bottle. Is provided in a single device for controlling the input power after ink bottle replacement to the ink supply unit, but it is not always necessary to provide all of these setting and control means in a single device. Instead, each means may be provided alone in the apparatus, or a plurality of means selected from these means may be combined in the apparatus.

The post-pause inkless time and the post-pause input power need not necessarily be set and controlled based on the pause time instruction value, but may be set and controlled in consideration of other factors. Also, the inkless time after ink bottle replacement and the input power after ink bottle replacement may be set and controlled in consideration of other factors. For example, in the ink supply device, a viscosity obtaining unit that obtains a viscosity indicating value indicating the viscosity of the ink supplied to the ink reservoir, and the viscosity indicating value is input from the viscosity obtaining unit, and the input viscosity indicating value is smaller. As it becomes
An inkless time setting means for setting the inkless time after pausing or the inkless time after ink bottle replacement to a shorter time may be provided. Further, in the ink supply device, a viscosity obtaining means for obtaining a viscosity indicating value indicating the viscosity of the ink supplied to the ink reservoir, and inputting the viscosity indicating value from the viscosity obtaining means, the input viscosity indicating value is large. The power supply unit may further include an input power control unit that controls so as to increase the post-pause input power input to the ink supply unit or the input power after ink bottle replacement when the ink supply unit is operated.

The setting of each inkless time and the control of each input power are performed based on a combination of a plurality of values selected from the viscosity indication value, the pause time indication value, and the bottle replacement detection signal. Is also good. For example, the post-pause inkless time is set based on the pause time instruction value and the viscosity instruction value, and the shorter the pause time inkless time is set as the pause time instruction value is smaller, and the viscosity is set at the same pause time instruction value. The smaller the instruction value, the shorter the post-pause inkless time is set, or the post-pause input power is controlled based on the pause time indicated value and the viscosity indicated value. Set the input power after pause, and set the input power after pause to be smaller as the viscosity indication value is smaller even with the same pause time indication value, so that the waiting time until the ink bottle is empty is detected. Alternatively, it may be shortened so as not to cause a false error detection.

Also, for example, the inkless time after ink bottle replacement is set based on the bottle replacement detection signal and the viscosity indication value, and the shorter the viscosity indication value is when the bottle replacement detection signal is output, the shorter the inkless time is. Set the inkless time after ink bottle replacement, or control the input power after ink bottle replacement based on the bottle replacement detection signal and the viscosity indication value, and output the bottle replacement detection signal. The smaller the viscosity indication value, the smaller the input power after replacing the ink bottle, and the shorter the waiting time until it is detected that the ink bottle is empty, so as to prevent false detection. It may be.

Further, the setting of the inkless time and the control of the input power are not limited to being performed independently, but may be performed simultaneously. For example, during printing, the setting of the inkless time during printing and the control of the input power during printing may be performed simultaneously in accordance with the viscosity instruction value, or in operation of the apparatus after a pause,
The setting of the post-pause inkless time and the control of the post-pause input power are performed simultaneously according to the pause time instruction value, and the waiting time until the ink bottle is emptied is detected as erroneous detection. It may be shortened so as not to cause the problem.

[Brief description of the drawings]

FIG. 1 is a diagram showing an ink supply device in stencil printing according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a relationship between a viscosity instruction value and a blank detection elapsed time during printing.

FIG. 3 is a diagram illustrating a relationship between a viscosity instruction value and an input power during printing.

FIG. 4 is a diagram showing the amount of ink remaining in an ink reservoir after a pause.

FIG. 5 is a diagram illustrating a relationship between a viscosity instruction value and an elapsed time of empty detection after a pause.

FIG. 6 is a diagram illustrating a relationship between a viscosity instruction value and an input power after a pause.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ink bottle 2 Plate cylinder 3 Ink storage part 4 Squeegee roller 5 Doctor roller 21 Ink storage amount detection means 10 Ink supply pump 22 Bottle empty detection means 23 Operation stop control means 31 Viscosity acquisition means 32 Pause time acquisition means 33 Bottle replacement detection means 34 inkless time setting means 35 input power control means 100 ink supply device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B41F 31/02 SG

Claims (5)

[Claims] An ink for supplying the stencil printing ink from the ink bottle to an ink reservoir for temporarily storing the ink for stencil printing from an ink bottle to the inner peripheral surface of the plate cylinder. Supplying means for detecting whether or not the amount of ink in the ink reservoir has reached a first predetermined amount and outputting an ink supply start signal when the amount of ink is less than the first predetermined amount; An ink storage amount detection means for outputting an ink supply end signal when the predetermined second predetermined amount is reached; and an ink supply start signal when the ink supply start signal is output during printing. The ink bottle is emptied when the measured elapsed time exceeds the inkless time during printing before the ink supply end signal is output. A bottle that shows that And an operation stop control unit that operates the ink supply unit according to the input of the ink supply start signal and stops the ink supply unit according to the input of the ink supply end signal. An ink supply device for stencil printing, comprising: a viscosity obtaining unit that obtains a viscosity instruction value indicating a viscosity of the ink supplied to the ink reservoir; and the viscosity instruction value input from the viscosity obtaining unit. An inkless time setting means for setting the inkless time during printing to a shorter time as the designated value becomes smaller, the ink supply device in stencil printing. 2. An ink for supplying the ink for stencil printing from the ink bottle to an ink reservoir for temporarily storing the ink for stencil printing from the ink bottle to the inner peripheral surface of the plate cylinder. Supplying means for detecting whether or not the amount of ink in the ink reservoir has reached a first predetermined amount and outputting an ink supply start signal when the amount of ink is less than the first predetermined amount; An ink storage amount detection means for outputting an ink supply end signal when the predetermined second predetermined amount is reached; and an ink supply start signal when the ink supply start signal is output during printing. The ink bottle is emptied when the measured elapsed time exceeds the inkless time during printing before the ink supply end signal is output. A bottle that shows that And an operation stop control unit that operates the ink supply unit according to the input of the ink supply start signal and stops the ink supply unit according to the input of the ink supply end signal. An ink supply device for stencil printing, comprising: a viscosity obtaining unit that obtains a viscosity instruction value indicating a viscosity of the ink supplied to the ink reservoir; and the viscosity instruction value input from the viscosity obtaining unit. Stencil printing, comprising: input power control means for controlling so as to increase the input power during printing input to the ink supply means when operating the ink supply means as the indicated value increases. Ink supply device. 3. An ink for supplying the ink for stencil printing from the ink bottle to an ink reservoir for temporarily storing the ink for stencil printing from the ink bottle to the inner peripheral surface of the plate cylinder. Supplying means for detecting whether or not the amount of ink in the ink reservoir has reached a first predetermined amount and outputting an ink supply start signal when the amount of ink is less than the first predetermined amount; An ink storage amount detection unit that outputs an ink supply end signal when a predetermined second predetermined amount is reached; and an ink supply amount detection unit that outputs the ink supply end signal when the printing operation is stopped and then started again. When the start signal is output, the elapsed time after the output of the ink supply start signal is measured, and the measured elapsed time is measured before the ink supply end signal is output. When you cross
Bottle empty detection means for outputting a bottle empty signal indicating that the ink bottle is empty; and operating the ink supply means according to the input of the ink supply start signal, and operating the ink supply means according to the input of the ink supply end signal. An ink supply device for stencil printing, comprising: an operation stop control unit for stopping an ink supply unit, wherein a suspension time instruction value indicating a suspension time from when a printing operation is stopped to when a printing operation is started again is obtained. A pause time acquisition unit for inputting the pause time instruction value from the pause time acquisition unit, and setting the inkless time after pause to a shorter time as the input pause time instruction value decreases. Means for supplying ink in stencil printing. 4. An ink for supplying the stencil printing ink from the ink bottle to an ink reservoir for temporarily storing the stencil printing ink from the ink bottle to the inner peripheral surface of the plate cylinder. Supplying means for detecting whether or not the amount of ink in the ink reservoir has reached a first predetermined amount and outputting an ink supply start signal when the amount of ink is less than the first predetermined amount; An ink storage amount detection unit that outputs an ink supply end signal when a predetermined second predetermined amount is reached; and an ink supply amount detection unit that outputs the ink supply end signal when the printing operation is stopped and then started again. When the start signal is output, the elapsed time after the output of the ink supply start signal is measured, and the measured elapsed time is measured before the ink supply end signal is output. When you cross
Bottle empty detection means for outputting a bottle empty signal indicating that the ink bottle is empty; and operating the ink supply means according to the input of the ink supply start signal, and operating the ink supply means according to the input of the ink supply end signal. An ink supply device for stencil printing, comprising: an operation stop control unit for stopping an ink supply unit, wherein a suspension time instruction value indicating a suspension time from when a printing operation is stopped to when a printing operation is started again is obtained. A pause time acquisition unit that inputs the pause time instruction value from the pause time acquisition unit, and after the pause that is input to the ink supply unit when the ink supply unit is operated as the inputted pause time instruction value increases. Input power control means for controlling so as to increase the input power. Apparatus. 5. An ink for supplying the stencil printing ink from the ink bottle to an ink reservoir for temporarily storing the ink for stencil printing from the ink bottle to the inner peripheral surface of the plate cylinder. Supplying means for detecting whether or not the amount of ink in the ink reservoir has reached a first predetermined amount and outputting an ink supply start signal when the amount of ink is less than the first predetermined amount; An ink supply amount detection unit that outputs an ink supply end signal when the ink supply amount reaches a second predetermined amount; and the ink supply start signal is output first after the ink bottle is replaced. In this case, the elapsed time after the output of the ink supply start signal is measured, and when the measured elapsed time exceeds the inkless time after the ink bottle replacement before the output of the ink supply end signal is output. Then, Bottle empty detection means for outputting a bottle empty signal indicating that the ink bottle is empty; operating the ink supply means according to the input of the ink supply start signal; and supplying the ink according to the input of the ink supply end signal. An ink supply device for stencil printing, comprising: operation stop control means for stopping the means, wherein the bottle replacement detection means for detecting that the ink bottle has been replaced and outputting a bottle replacement detection signal; Stencil printing, comprising: input power detection means for inputting a detection signal and operating the ink supply means so as to increase the input power after ink bottle replacement which is input to the ink supply means. Ink supply device.