JP2000141860A - Printing method - Google Patents

Abstract

(57) [Summary] [Problem] To shorten the time required from plate making to the end of printing. A normal printing method includes checking and replenishing the ink amount before starting printing, receiving a test print, and starting printing by receiving a print start key operation.
A continuous mode is provided when it is required to shorten the time required for printing to be completed rather than the print quality. In the continuous mode, the used master is discharged, the master is made, the master is supplied to the printing drum, and the paper with the plate is discharged (step S31), and then printing is started continuously (step S32). That is, in the continuous mode, the steps of checking and replenishing the ink amount related to print quality and the step of receiving test printing are omitted, and printing is started without pressing the print start key, thereby shortening the required time. When there are a plurality of originals, the next original can be printed following the previous original.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing method for printing by bleeding ink from a master wound around a printing drum.

[0002]

2. Description of the Related Art As a conventional printing method for bleeding ink from a master wound around a printing drum and printing, Japanese Utility Model Publication No. 3-6441 and Japanese Patent Application Laid-Open No. Hei 5-3302 are known.
No. 27, JP-A-6-40139, JP-A-6-40139
There is a printing method described in the proposal of Japanese Patent No. 15943. An example of such a printing method will be described with reference to the flowchart of FIG.

First, when the operator operates a plate-making start key (Y in step S1), the used master is discharged from the printing drum by the plate discharging device, the original is scanned, and the master is made based on the read image of the original. Then, the master is supplied to the print drum, and a press operation is performed by a press roller to discharge the paper with the plate, thereby bringing the master into close contact with the print drum with ink (step S2).

[0004] Next, a process for maintaining good print quality is performed. First, the amount of ink in the ink reservoir is detected. If the amount of ink is less than the appropriate amount (Y in step S3), the ink is sucked from the ink pack by the ink pump and supplied to the ink reservoir. At this time, prior to the start of printing, the ink in the ink reservoir is supplied to the inner peripheral surface of the print drum by the ink supply roller and the doctor roller while the print drum is rotated without performing the pressing operation by the press roller, and thus the master is supplied to the master. Forced idle ink replenishment for sufficiently distributing the ink is performed (step S4).

[0005] Thereafter, if the operator presses a test printing key (not shown) (Y in step S5), test printing is performed (step S6). The operator looks at the results of the trial printing, performs any work as necessary, performs the trial printing several times, and then determines the number of prints.

Then, in response to the operation of the print start key by the operator (Y in step S7), printing is started (step S8).

The replenishment of ink during the printing process (step S8) is performed every time a predetermined number of prints have been made, and the amount of ink in the ink pool is checked. Here, if the amount of ink in the ink pool does not become an appropriate amount even if the pumping operation of the ink pump that sends ink from the ink pack to the ink pool is repeated several times, the ink in the ink pack is exhausted. By notifying the absence, the operator replaces the ink pack.

[0008]

Depending on the printed matter, there is a case where it is desired to finish printing even if the print quality may be slightly inferior. However, in the conventional printing method, since each process (steps S3 to S6) for maintaining good print quality is included, there is a disadvantage that it takes time to perform each process each time the master is replaced.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the time required from plate making to the end of printing.

Another object of the present invention is to prevent a shortage of ink when printing is performed by shortening the time from the start of plate making to the end of printing for a plurality of originals continuously.

Another object of the present invention is to replenish the ink without interrupting the printing process.

[0012]

According to a first aspect of the present invention, there is provided a printing method, wherein a master is supplied to a printing drum in response to an operation of a plate making start key, and ink is replenished in accordance with an amount of ink in an ink reservoir. In a printing method in which test printing is received by a predetermined operation and printing is started in response to an operation of a print start key, a continuous mode is set in response to a predetermined operation, and in the continuous mode, a plate making step of making the master in the continuous mode. A plate supplying step of supplying the master to the printing drum, a plate attaching step of discharging a sheet with the plate, and a printing step are continuously performed.

Therefore, when it is required to shorten the time required for completing printing rather than the printing quality, the continuous mode can be used.

According to a second aspect of the present invention, there is provided the printing method according to the first aspect, wherein a continuous mode is set in response to an operation of a continuous mode key, and the continuous mode is set in response to an operation of a plate making start key. If the continuous mode is selected, a plate making step of making the master plate, a plate feeding step of feeding the master to the printing drum, a plate attaching step of discharging plate-attached paper, and a printing step And are performed continuously.

Therefore, the continuous mode is set by operating the continuous mode key, and when the master making start key is operated in the state where the continuous mode is set, the master is made, made, supplied, and subsequently operated. Printing is performed continuously without any printing.

According to a third aspect of the present invention, there is provided the printing method according to the first aspect, wherein a continuous mode is set in response to an operation of a continuous start key, and a master making step of making the master is performed. The plate supplying step of supplying the plate to the printing drum, the plate attaching step of discharging the sheet with the plate, and the printing step are continuously performed.

Therefore, when the continuous start key is operated, the master is subjected to plate making, plate feeding and plate attaching, and thereafter printing is continuously performed without any operation.

According to a fourth aspect of the present invention, there is provided the printing method according to the first, second or third aspect, wherein when printing on a plurality of originals is continuously performed in the continuous mode, the printing is performed every predetermined number of the originals. The printing drum is replenished with forced idle ink.

Here, when the used master is discharged, a large amount of ink is discarded together with the master, and the amount of ink in the ink reservoir is rapidly reduced. In a normal printing method, the ink amount of the ink pool is checked before the printing process after the plate discharge, and if the ink is insufficient, the ink is appropriately replenished, and the ink is sufficiently distributed to the master by the forced idle ink replenishment. Since printing is performed, there is no particular problem due to a decrease in the amount of ink at the time of plate discharge. However, in the continuous mode, several steps included in the normal printing method are omitted, the ink amount is not checked before the printing step after the plate discharge, and at this time, even if the ink amount is insufficient, the forced idle ink supply is not performed. Not done. Also,
Even in the continuous mode, in the printing process, the amount of ink in the ink pool is automatically checked and replenished as necessary every time a predetermined number of sheets are printed, as in the normal printing method. In the case where printing of a plurality of originals is performed without interruption, particularly when the number of printed sheets of each original is small, even if ink is supplied during the printing process, the used master is immediately discharged. As described above, since the plate discharge is frequent and the consumption of ink is remarkable, the amount of ink in the ink reservoir gradually decreases during the printing process, and the supply of ink cannot keep up with the large amount of ink consumption accompanying the plate discharge and plate supply of the master, Insufficient ink may occur. However, according to the second aspect of the invention, when printing on a plurality of documents is performed continuously in the continuous mode, the occurrence of ink shortage is prevented by performing forced idle ink replenishment for each predetermined number of documents. You.

The invention according to claim 5 is the invention according to claims 1, 2, 3
Or the printing method according to 4, wherein when printing is performed in the continuous mode, wherein the number of prints per master plate is equal to or less than a predetermined number, the forced idle ink is applied to the print drum at a predetermined timing during the printing process. Replenish.

Here, when the used master is discharged, a large amount of ink is discarded together with the master, and the amount of ink in the ink reservoir is rapidly reduced. In a normal printing method, the ink amount of the ink pool is checked before the printing process after the plate discharge, and if the ink is insufficient, the ink is appropriately replenished, and the ink is sufficiently distributed to the master by the forced idle ink replenishment. Since printing is performed, there is no particular problem due to a decrease in the amount of ink at the time of plate discharge. However, in the continuous mode, several steps included in the normal printing method are omitted, the ink amount is not checked before the printing step after the plate discharge, and at this time, even if the ink amount is insufficient, the forced idle ink supply is not performed. Not done. Also,
Even in the continuous mode, in the printing process, the amount of ink in the ink pool is automatically checked and replenished as necessary every time a predetermined number of sheets are printed, as in the normal printing method. In the case of printing a printed material having a small number of printed sheets per original, particularly when printing a plurality of originals without interruption, even if ink is supplied during the printing process, the used master can be discharged immediately. As the printing is performed frequently, the discharge of the ink is frequent and the consumption of ink is remarkable, so the amount of ink in the ink reservoir decreases rapidly during the printing process. Running out of ink and ink shortage may occur. However, according to the third aspect of the present invention, when a printed material having a small number of printed sheets per original is printed in the continuous mode, ink is supplied by performing forced idle ink replenishment at a predetermined timing during the printing process. Is prevented from occurring.

According to a sixth aspect of the present invention, in the printing method of the fifth aspect, the forced idle ink replenishment is performed after printing is completed.

Therefore, when printing a small number of prints per master on a plurality of originals in the continuous mode, printing is performed from the end of printing of the previous original to the start of printing of the next original. When there is no time, the ink amount in the ink reservoir recovers to an appropriate amount.

According to a seventh aspect of the present invention, in the printing apparatus according to the fifth aspect, the forced idle ink supply is performed before starting printing.

Therefore, a good print state can be obtained from the first sheet of printing, for example, when printing a small number of printed sheets per master on a plurality of originals in the continuous mode.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a printing method according to the present invention will be described with reference to FIGS. The printing method according to the present embodiment is used for a stencil printing apparatus.

FIG. 1 is a block diagram showing the electrical connection of each section provided in the stencil printing apparatus.

The stencil printing apparatus includes a scanner section 1 for reading an image of an original, a plate making apparatus 2 for making a master based on the read image, a plate discharging apparatus 3 for collecting used masters, and a printing section 4 for printing on printing paper ( FIG. 2). The scanner unit 1 includes an ADF (not shown).

FIG. 2 is a longitudinal sectional front view schematically showing the printing unit 4. The printing unit 4 includes a printing drum 5 around which a master is wound, and a press roller 6 that presses against a predetermined position of the printing drum 5 in a printing process. The printing unit 4
Is formed with a paper transport path 7 that passes between the printing drum 5 and the press roller 6.

In the printing drum 5, an ink supply roller 8 is provided.
And a doctor roller 9 are provided. The ink supply roller 8 has an axial direction parallel to the axial direction of the printing drum 5 and is in contact with the inner peripheral surface of the printing drum 5. The doctor roller 9 has an axial direction parallel to the axial direction of the ink supply roller 8 and a slight gap with the ink supply roller 8.
Together with the ink supply roller 8, a V-shaped valley-shaped ink reservoir T is formed.

Above the ink reservoir T, an ink pack P
The discharge port 11 of the ink supply pipe 10 connected to the ink supply pipe 10 (see FIG. 1) is located.

As shown in FIG. 1, the ink reservoir T is provided with an ink amount sensor 12 for detecting whether the amount of ink in the ink reservoir T has reached an appropriate amount.
The ink in the ink pack P is supplied to the ink reservoir T by the ink pump 13.

Furthermore, the stencil printing apparatus is provided with an operation panel 16 having a stencil start key 14 for starting reading of a document and master stencil making, and a print start key 15 for starting printing.

The scanner unit 1, the plate making device 2, the plate discharging device 3, the printing unit 4, the ink amount sensor 12, the ink pump 13, and the operation panel 16 execute various types of arithmetic processing to control each unit. It is electrically connected to the CPU 17 that performs centralized control. The CPU 17 is formed by connecting a ROM 18 in which a program of the printing method of the present embodiment and the like are stored and a RAM 19 in which various variable information is temporarily stored.

In the present embodiment, in addition to the usual printing method conventionally used, a printing method in a continuous mode in which priority is given to shortening the time until printing is completed over printing quality is provided.

The continuous mode can be selected by the operator performing a predetermined operation on the operation panel 16. A continuous mode key 20 may be provided on the operation panel 16 separately from the plate making start key 14 and the print start key 15, and the continuous mode may be set by pressing the continuous mode key 20.

In a normal printing method, the used master is discharged, and after the master is made and supplied, the amount of ink in the ink pool is checked and the ink is supplied. In addition, a trial printing process and subsequent adjustment work are performed. When printing is started, the start of printing is newly declared by key operation. On the other hand, in the continuous mode, the used master is discharged, the image of the document is read, and the master is made and printed, and the printing process is performed continuously.

FIGS. 3 to 5 are flowcharts showing a printing method according to the present embodiment. In the present embodiment, first,
As shown in FIG.
When the original is set and the prepress start key 14 is pressed (Y in step S11), it is determined whether or not the printing mode is the continuous mode (step S12). If the normal printing method is selected (step S12). N), Step S1
Then, the process proceeds to step S3, and printing is performed by the normal printing method shown in FIG.
When the continuous mode is selected (Y in step S12), the process proceeds to step S14, and printing is performed by the continuous mode printing method shown in FIG.

In the normal printing method (see FIG. 4), first, the used master is discharged, and the image of the new document is scanned by the scanner unit 1.
The plate making device 2 makes a master plate based on the read image, and the master is supplied to the printing drum 5 and is pressed by the press roller 6 to discharge the printing paper. 5 (step S21).

Next, it is determined by the ink amount sensor 12 whether or not the amount of ink in the ink reservoir T is below the proper value (step S22). If it is below (Y in step S22), the ink pump Ink 13 is pumped from the ink pack P, and the ink is supplied to the ink reservoir T from the ejection port 11 of the ink supply pipe 10. At this time, the ink in the ink reservoir T is supplied to the inner peripheral surface of the printing drum 5 by the ink supply roller 8 and the doctor roller 9 while rotating the printing drum 5 without involving the pressing operation of the press roller 6, so that the printing drum 5 becomes a master. The forced idle ink replenishment for sufficiently distributing the ink is performed (step S23).

Here, when replenishing the ink, if the ink amount does not reach the proper amount even after the pumping is repeated a predetermined number of times, it means that the ink pack P is empty, so that it is notified that there is no ink. In response to this, the operator replaces the ink pack P.

Next, when there is a request for test printing from the operator (Y in step S24), test printing is performed (step S25). Here, various adjustment operations performed by the operator while viewing the results of the trial printing are allowed. Step S24-
S25 can be repeated by the operation of the operator.

Then, the operator operates the print start key 1
When 5 is pressed (Y in step S26), printing is started (step S27).

During the printing process in step S27, for example, each time one sheet is printed, the ink amount sensor 12 determines whether the amount of ink in the ink pool T is below an appropriate value. Ink is pumped from the ink pack P by the ink pump 13 and supplied to the ink reservoir T as appropriate.

In the normal printing method, when a plurality of originals are set on the ADF, the second original is automatically read after the printing of the first original is completed, and the plate discharge, plate making, Since the operations up to plate feeding and printing are performed, for the second and subsequent originals, the operator presses the test print key as necessary, but presses only the print start key 15.

In the continuous mode printing method (see FIG. 5), first, a used master is discharged, a scanner unit 1 reads an image of a new document, and a plate making device 2 makes a master based on the read image. The master is supplied to the printing drum 5 and pressed by the press roller 6 to discharge the paper with the plate, whereby the master is attached to the printing drum 5 (step S31).

Subsequently, a printing process is performed (step S3).
2).

In the continuous mode, when a plurality of originals are set in the ADF, after the printing process in step S32 is completed, there is an original in step S33 (Y in step S33), and the process returns to step S31. . And A
Steps S31 to S33 are repeated without interruption until there are no more documents set in the DF.

In such a configuration, when printing a printed material in which the print quality is more important than the time required for completing the printing, a normal printing method is selected, and the time required for completing the print is shorter than the print quality. When printing a printed material that is required to be performed, the continuous mode is selected.

According to the present embodiment, when the continuous mode is selected, from the start of plate making to the end of printing are continuously performed when printing a printed material in which it is not important to increase the print quality. Time can be shortened.

When printing on a plurality of originals is performed, the operation from the master original discharging of the previous original, the master original printing of the next original, and the printing of the next original are not interrupted without the operator's operation. I can do it.

Next, a second embodiment of the present invention will be described with reference to FIG. Note that the same portions as those described in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, when printing a plurality of originals without interruption in the continuous mode, the master is discharged because the forced idle ink supply performed before the printing process is omitted in the normal printing method. Every time, the amount of ink in the ink pool decreases rapidly, and there is a possibility that ink shortage occurs. Thus, in the present embodiment, forced idle ink replenishment is performed for each predetermined number of documents.

In this embodiment, a partial area of the RAM 19 is used as a document number counter 21 (see FIG. 1) for counting the number of documents when a plurality of documents are continuously printed in the continuous mode. Used. The document number counter 21 is reset when the normal printing process is selected.

The printing method in the continuous mode according to this embodiment is as follows.
First of all, used master discharge, new master plate making, plate feeding,
After printing (step S41), 1 is added to the count value G of the document number counter 21 (step S42). For example, when G is a multiple of 4, that is, when the document is the fourth document, 8
If the sheet is the twelfth sheet, the twelfth sheet, etc. (Y in step S43), forced idle ink supply is performed (step S44).
Thereafter, printing is started (step S45).

If G is not a multiple of 4 in step S43 (N in step S43), printing is started without performing forced idle ink supply (step S45).

Then, in step S46, it is detected whether or not the original remains in the ADF. If the original remains (Y in step S46), the process returns to step S41. If not, the process ends (N in step S46).

In this embodiment, the forced idle ink replenishment is performed for every four originals.
The number of sheets may not be four, but may be set appropriately according to the type of ink or the like.

Next, a third embodiment of the present invention will be described with reference to FIG.

In the present embodiment, when printing in a continuous mode is performed on a print having a small number of prints per master plate, the forced idle ink replenishment performed before the printing process is omitted in the normal printing method. This corresponds to the fact that the ink amount reduced at the time of master discharging is difficult to recover to an appropriate value only during the process. That is, when the number of prints per master plate is equal to or less than the predetermined number, forced idle ink replenishment is performed.

The printing method in the continuous mode according to the present embodiment is as follows.
First of all, used master discharge, new master plate making, plate feeding,
After printing (step S51), for example, the number of prints N is 10
It is determined whether it is below (step S52), and if it is below 10 (Y in step S52), the forced idle ink replenishment is performed (step S53). Thereafter, the process proceeds to a printing process (step S54).

If the number of prints is equal to or greater than 11 (N in step S52), the process proceeds to the printing step (step S54) without performing forced idle ink supply.

Then, in step S55, it is detected whether or not the original document remains in the ADF. If the original document remains (Y in step S55), the process returns to step S51. If not, the process ends (N in step S55).

In this embodiment, the number of prints is 10
When the number of sheets is equal to or less than the number of sheets, the forced idle ink replenishment is performed. However, in practice, the number of sheets is not limited to 10, and it is preferable that the configuration can be appropriately set according to the size of the print image area.

Next, a fourth embodiment of the present invention will be described with reference to FIG.

In this embodiment, as in the previous embodiment, when the number of prints per master plate is 10 or less, the forced idle ink replenishment is performed, but the timing is different, and it is performed at the end of printing.

First, after the used master is discharged and a new master is made, supplied and supplied (step S61), the number of prints N
Is determined to be 10 or less (step S62),
If it is 10 or less (Y in step S62), after printing starts (step S63), it waits until printing is completed (step S64), and performs forced idle ink supply (step S6).
5).

Then, in step S66, it is detected whether or not the document remains in the ADF. If the document remains (Y in step S66), the process returns to step S61, and if not, the process ends (N in step S66).

If the number of prints is 11 or more (N in step S62), the printing process (step S6)
Printing is performed in 7), and then the process proceeds to step S66.

According to the present embodiment, it is possible to recover the ink amount in the ink pool to an appropriate amount during a period when printing is not performed between the end of printing the previous original and the start of printing of the next original. Therefore, the printing process is not delayed for ink supply.

Further, according to the present embodiment, when the forced idle ink replenishment is performed after the printing is completed, the ink pack P
Becomes empty, the ink pack P can be replaced at a time when printing is not performed, so that the printing of the next document can be smoothly performed without hindering the processing in each step.

In the stencil printing apparatus, if printing is not performed while the stencil printing machine is usually left for a long period of time (which can be set as appropriate, but at room temperature, 72 hours is set as a guide), the master stencil printing process is performed. Before the forced idle ink replenishment is performed. Conversely, if left for a short time (less than 72 hours), the forced idle ink supply is not performed. However, according to the third and fourth embodiments, even in the case where the printer is used in the continuous mode, the forced idle ink replenishment is appropriately performed even when the printer is used for a short time. Good printed matter is obtained.

Next, a fifth embodiment of the present invention will be described with reference to FIG.

In this embodiment, as in the third and fourth embodiments, when the number of prints per master plate is 10 or less, forced idle ink replenishment is performed, but the timing thereof can be arbitrarily set. .

First, after the used master is discharged and the new master is made, supplied and supplied (step S71), the number of prints N
Is less than or equal to 10 (step S72),
If it is 10 or less (Y in step S72), after printing is started (step S73), after waiting for printing a sheet (step S74), forced idle ink supply is performed (step S75), and the remaining (N− a) Print sheets (Step S)
76). Here, an arbitrary numerical value from 1 to 10 is set in advance for a.

Then, in step S77, it is detected whether or not the original document remains in the ADF. If the original document remains (Y in step S77), the process returns to step S71, and if not, the process ends (N in step S77).

If the number of printed sheets is 11 or more (N in step S72), the printing step (step S7) is executed.
Printing is performed in 8), and then the process proceeds to step S77.

Next, a sixth embodiment of the present invention will be described with reference to FIG.

In the present embodiment, the forced idle ink replenishment is performed every predetermined number of originals when printing a plurality of originals without interruption in the continuous mode, and when the number of prints per master is small. This is an example in which forced idle ink supply is combined.

First, after the used master is discharged and a new master is made, plate-supplied, and plate-attached (step S81), 1 is added to the count value G of the document number counter 21 (step S8).
2) When G is a multiple of 4, that is, when the original is the fourth, eighth, twelfth,...
83), the process proceeds to step S84, and the number of prints N is 10
It is determined whether or not the number is equal to or less than (step S84). If the number is equal to or less than 10 (Y in step S84), after printing is started (step S85), a sheet is set (for example, a = N / 2 (a decimal part is rounded down)). Wait for printing (Step S
86), the forced idle ink supply is performed (step S8).
7) Print the remaining (Na) sheets (step S8)
8).

Then, in step S89, it is detected whether or not the document remains in the ADF. If the document remains (Y in step S89), the process returns to step S81. If not, the process ends (N in step S89).

When G is not a multiple of 4 in step S83 (N in step S83), and when the number of printed sheets is 11 or more in step S84 (step S8).
4) N), printing is performed in a printing step (step S90),
After that, it moves to step S89.

In the present embodiment, even if the continuous mode is selected and the fourth document is printed, if the number of pages to be printed is 11 or more, printing is continued without performing forced idle ink supply.

According to the second to sixth embodiments, even when the continuous mode is selected, the ink is appropriately replenished, so that shortage of the ink can be prevented.

Next, a seventh embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a continuous start key 22 is provided as shown in the block diagram of FIG.

The continuous start key 22 is a key for setting a continuous mode when pressed, and also serves as a plate making start key 14 in the continuous mode.

Therefore, as shown in the flowchart of FIG. 12, when the continuous start key 22 is pressed (Y in step S91), printing is performed by the continuous mode printing method (step S92).

As a printing method in the continuous mode in step S92, for example, there is a printing method in the continuous mode shown in the flowcharts of FIGS. 5 to 10 described in the first to sixth embodiments.

If the continuous start key 22 has not been pressed in step S91 (N in step S91), another process is performed (step S93).

According to the present embodiment, printing in the continuous mode can be performed by one key operation.

[0091]

According to the first aspect of the present invention, a continuous mode for starting printing is provided from the start of plate making to the start of plate feeding and the discharge of paper with a plate. Therefore, it is possible to omit a process and an operation for accepting an operation for improving the print quality, and therefore, it is possible to cope with a case where it is required to reduce the time required for completing printing rather than the print quality.

According to the second aspect of the present invention, the continuous mode is set by operating the continuous mode key, and when the master making start key is operated in the state where the continuous mode is set, the master performs the master making, plate feeding, and master feeding. Since the printing is performed continuously without any operation after the plate is attached, by setting the continuous mode, it is possible to omit the process and the operation for accepting the work for improving the printing quality, and therefore, the printing quality can be reduced. In the invention according to the third aspect, when the continuous start key is operated, the master is subjected to plate making / plate feeding / plate attaching, and After that, printing is continuously performed without any operation. By operating the continuous start key, the process and operation for accepting the work for improving the print quality can be omitted. Since the printing is performed, it is possible to cope with a case where it is necessary to shorten the time required for completing the printing rather than the printing quality. In the invention according to claim 4, printing of a plurality of originals is continuously performed in the continuous mode. In this case, forced idle ink replenishment is performed on the print drum every predetermined number of originals.Since forced idle ink replenishment after replacing the master is omitted, ink replenishment cannot be performed in time during the printing process alone. Inconvenience can be prevented, and good print density can be maintained.

According to the fifth aspect of the present invention, when printing in a continuous mode a print having a small number of prints per master plate, ink is supplied to the ink reservoir at a predetermined timing from the start of master plate making to the end of printing. Since the ink is supplied to the print drum and the forced idle ink is replenished at the time of replacing the master, the inconvenience of ink shortage due to the lack of ink replenishment due to the lack of ink replenishment only during the printing process can be prevented. Print density can be maintained.

According to the sixth aspect of the present invention, in the continuous mode, the forced idle ink replenishment is performed after the printing is completed. Therefore, when there is no printing operation from the end of printing of the previous document to the start of printing of the next document, Since the ink amount in the ink pool can be recovered to an appropriate amount, the time until printing is completed can be shortened without impairing the printing process. In addition, if the ink pack is emptied at the time of the forced idle ink replenishment, the ink pack can be replaced at a time when printing is not being performed after printing is completed. Can smoothly proceed to printing of the original.

According to the seventh aspect of the present invention, the forced idle ink replenishment is performed before the start of printing in the continuous mode.
A good printing state can be obtained from the first sheet.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical connection of each unit included in a stencil printing apparatus using a printing method according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional front view schematically showing a printing unit.

FIG. 3 is a flowchart showing a flow of continuous mode selection.

FIG. 4 is a flowchart illustrating a flow of a normal printing method.

FIG. 5 is a flowchart illustrating a flow of a printing method in a continuous mode.

FIG. 6 is a flowchart illustrating a flow of a continuous mode printing method according to a second embodiment of the printing method of the present invention.

FIG. 7 is a flowchart illustrating a flow of a continuous mode printing method according to a third embodiment of the present invention.

FIG. 8 is a flowchart illustrating a flow of a continuous mode printing method according to a fourth embodiment of the present invention.

FIG. 9 is a flowchart illustrating a flow of a continuous mode printing method according to a fifth embodiment of the present invention.

FIG. 10 is a flowchart illustrating a flow of a continuous mode printing method according to a sixth embodiment of the present invention.

FIG. 11 is a block diagram showing an electrical connection of each unit provided in a stencil printing apparatus using a printing method according to a seventh embodiment of the present invention.

FIG. 12 is a flowchart showing a flow of continuous mode selection.

FIG. 13 is a flowchart illustrating an example of a conventional printing method.

[Explanation of symbols]

 5 Printing drum 14 Plate making start key 15 Printing start key T Ink pool S31 Plate making process, plate feeding process, plate making process S32 printing process S41 plate making process, plate feeding process, plate making process S45 printing process S44 forced idle ink supply S51 plate making process , Plate feeding process, plate attaching process S53 forced idle ink replenishment S54 printing process S61 plate making process, plate feeding process, plate applying process S63, S64 printing process S65 forced idle ink replenishment S71 plate making process, plate supplying process, plate attaching process S74- S76 Printing process S75 Forced idle ink replenishment S81 Plate making process, plate feeding process, plate attaching process S85 to S88 Printing process S87 Forced idle ink replenishment

Claims (7)

[Claims] A master is supplied to a printing drum in response to an operation of a plate making start key, ink is supplied in accordance with an amount of ink in an ink reservoir, test printing is received by a predetermined operation, and an operation of a printing start key is performed. In a printing method for receiving and starting printing, a continuous mode is set by receiving a predetermined operation, and in the continuous mode, a plate making step of making the master plate, and a plate feeding step of feeding the master to the printing drum, A printing method comprising continuously performing a printing step and a printing step for discharging a printing sheet. 2. A continuous mode is set in response to an operation of a continuous mode key, and it is determined whether a continuous mode is set in response to an operation of a plate making start key. 2. The printing method according to claim 1, wherein a plate making step of performing printing, a plate feeding step of feeding the master onto the printing drum, a plate attaching step of discharging plate-attached paper, and a printing step are continuously performed. Method. 3. A continuous mode is set in response to an operation of a continuous start key, and a plate making step of making the master plate, a plate feeding step of feeding the master to the printing drum, and discharging a sheet with a plate. The printing method according to claim 1, wherein the printing step and the printing step are performed continuously. 4. The method according to claim 1, wherein when printing on a plurality of originals is performed in the continuous mode without interruption, forcible idle ink replenishment is performed on the printing drum every predetermined number of the originals. 3. The printing method according to 3. 5. A method according to claim 1, wherein when printing is performed in the continuous mode, wherein the number of prints per master plate is equal to or less than a predetermined number, a forced idle ink supply to the print drum is performed at a predetermined timing during the printing process. Claim 1, characterized in that
The printing method according to 2, 3, or 4. 6. The printing method according to claim 5, wherein the forced idle ink supply is performed after printing is completed. 7. The printing method according to claim 5, wherein the forced idle ink supply is performed before printing is started.