JP2004050451A - Ink jet recording apparatus and ink jet recording method - Google Patents

Abstract

An ink jet recording apparatus and an ink jet recording method capable of applying an amount of heat according to an amount of ink applied to a recording medium.
The recording medium is coated with a surface sealing material that melts when heat is applied, and the recording medium is sandwiched and pressed by two opposing rubber rollers. Melt it. At this time, the ejection ink amount detection circuit 13 detects the amount of ink ejected on the recording medium, and the temperature control circuit 16 adjusts the surface temperatures of the two rubber rollers 4 and 5 according to the ejection ink amount. An ink jet recording apparatus in which when the amount of ink to be ejected is large, the surface temperature is set to a higher temperature so that the surface sealing material of the recording medium 2 is sufficiently melted.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ink jet recording apparatus and an ink jet recording method, and more particularly to an ink jet recording apparatus having a heat treatment mechanism for heat-treating a recorded material and an ink jet recording method using the ink jet recording apparatus.
[0002]
[Prior art]
2. Description of the Related Art In recent years, recording targets of an ink jet recording apparatus have become diverse, such as not only documents but also photographs. However, in color printing of photographs and the like, there is a problem of fading deterioration caused by ultraviolet rays, gas, moisture, and the like received during long-term storage. Therefore, as one of the methods for preventing this fading deterioration, a method is used in which a surface sealing material that changes by heat is applied to the surface of a recording medium and recording is performed thereon. When the ink is discharged onto the recording medium and heated, the surface sealing material is melted, and then the surface sealing material is hardened by natural cooling and becomes a mirror surface. In this way, by making the surface sealing material mirror-like and covering the recording medium surface, it is possible to prevent fading and deterioration of an image and to make the image rich in gloss.
[0003]
Conventionally, recording on a recording medium having this surface sealing material has been performed as follows. After the recording head discharges the ink onto the recording medium, the recording medium is sandwiched between two heated rubber rollers and heated to melt the surface sealing material. The recording medium that passed through the rubber roller hardened the surface sealing material by natural cooling.
[0004]
In such a heat treatment on the recording medium, heat treatment conditions such as a heating temperature for the surface sealing material and a rotation speed of the rubber roller were predetermined values. That is, irrespective of the amount of ink ejected to the recording medium, heating is always performed at a constant temperature and the rubber roller is rotated at a constant speed. Further, the heat treatment conditions were the same for double-sided recording as for single-sided recording. Further, when a blower mechanism for promoting the vaporization of the recording solvent is provided, the blower mechanism is always driven regardless of the amount of ink to be ejected.
[0005]
[Problems to be solved by the invention]
However, the conventional recording apparatus for recording on a recording medium having a surface sealing material has the following problems.
[0006]
Heat of vaporization is required when the solvent in the ink injected into the recording medium evaporates. The heat of vaporization increases as the amount of ink ejected increases.
[0007]
FIG. 3 is a graph showing the relationship between the amount of ink ejected on the recording medium and the elapsed time after recording.
[0008]
Line a shows the change when 100% of only one of the three inks provided in the recording head is ejected, that is, when solid printing of only one color is performed, and line b shows the change of two colors, respectively. A change when 100% is applied is shown, and a line c indicates a change when 100% is applied for all three colors. The solvent of the ink evaporates with time after printing, and the weight on the printing medium decreases. However, particularly in the initial stage, the amount of the solvent existing on the recording medium, that is, the amount of the component to be evaporated largely differs depending on the amount of ink ejected on the recording medium, and the larger the amount of ink, the larger the amount of solvent. Therefore, of the amount of heat supplied from the rubber roller, the amount deprived by the heat of vaporization of the solvent greatly varies depending on the amount of ink ejected.
[0009]
However, the conventional ink jet recording apparatus always heats the recording medium at a constant temperature regardless of the amount of ink to be ejected on the recording medium, so that the amount of heat supplied to the recording medium is also constant. Therefore, when the amount of ink to be ejected is large, a large part of the supplied heat is lost to the heat of vaporization of the solvent, and the amount of heat applied to the recording medium itself is insufficient.
[0010]
In addition, in the case of double-sided printing, heating is performed at the same temperature as that of single-sided printing, despite the fact that the amount of ink ejected on the printing medium is greatly increased as compared with single-sided printing. Therefore, the amount of heat applied to the recording medium itself is significantly short for the same reason as in the case where the amount of injected ink is large, and the surface sealing material is likely to be insufficiently thermally transformed.
[0011]
If the heating temperature is set to a high temperature when the amount of ink to be discharged is large in order to prevent such a shortage of thermal denaturation, the amount of heat applied to the recording medium becomes excessive for a small amount of ink to be discharged, and Will cause yellowing and other obstacles. In addition, if the amount of heat applied to the recording medium is increased by slowing down the rotation speed of the rubber roller and lengthening the heating time, the throughput decreases. Further, when the amount of the ejected ink is small, the recording medium is dehydrated more than necessary, so that the recording medium base is cured or yellowed by excessive heating.
And so on.
[0012]
Further, there is a printer in which a warm air heater is provided between a recording head and a rubber roller to promote evaporation of a solvent on a recording medium. However, in the case of a recording medium with a small amount of ejected ink, only heating from the rubber roller is sufficient, so that drying with a warm air heater is not required, and power is wasted.
[0013]
The present invention has been made in view of the above-described conventional problems, and has as its object to provide an ink jet recording apparatus and an ink jet recording method that can apply heat in accordance with the amount of ink applied to a recording medium.
[0014]
[Means for Solving the Problems]
The ink jet recording apparatus of the present invention melts when heat is applied, and after the ink is ejected onto a recording medium coated with a surface sealing material that changes into a mirror surface when cooled after being melted, heating is applied to the recording medium. In the ink jet recording apparatus having a heating means for performing, provided with an applied ink amount measuring means for measuring the applied ink amount to the recording medium, the heating means, according to the applied ink amount measured by the applied ink amount measuring means, The amount of heat applied to the recording medium is adjusted.
[0015]
In the ink jet recording method of the present invention, the ink is discharged to a recording medium coated with a surface sealing material that changes to a mirror-like shape when cooled after being melted by applying heat, and then the recording medium is heated. In the ink jet recording method having a heating step to be performed, the method further comprises an applied ink amount measuring step of measuring an applied ink amount to the recording medium, wherein the heating step is performed according to the applied ink amount measured in the applied ink amount measuring step. The amount of heat applied to the recording medium is adjusted.
[0016]
According to the above configuration, by detecting the amount of ink applied to the recording medium and adjusting the amount of heat applied to the recording medium according to the amount of applied ink, it is possible to always apply an appropriate amount of heat to the recording medium, The surface sealing material can be sufficiently thermally transformed.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
[0018]
(Embodiment 1)
FIG. 1 is a configuration diagram illustrating an inkjet recording apparatus according to an embodiment of the present invention.
[0019]
The ink jet recording apparatus includes a recording head 1 that discharges ink to a recording medium 2 to perform recording, a hot air heater 3 that sends hot air to the recorded recording medium 2, and a recording medium 2 that moves the recording medium 2 in the direction of arrow p. It has a rubber roller 4, a lower rubber roller 5, an upper halogen lamp 6 for heating the upper rubber roller 4, and a lower halogen lamp 7 for heating the lower rubber roller 5. The upper rubber roller 4 and the lower rubber roller 5 are opposed in parallel, and the recording medium 2 is sandwiched and pressed between these two rubber rollers. A pressing portion formed by the two rubber rollers is referred to as a nip 8. Further, a temperature sensor 9 for measuring the surface temperature of the upper rubber roller 5 and a temperature sensor 10 for measuring the surface temperature of the lower rubber roller are provided.
[0020]
The recording head 1 is arranged such that a plurality of ejection ports face the recording medium 2, and a heating heater is provided for each ejection port. The heating heater generates heat to generate bubbles in the ink, and a predetermined amount of ink is discharged from the discharge ports by the pressure of the generated bubbles. In this embodiment, the ink is ejected by the above-described bubble jet (registered trademark) method. However, the present invention is not limited to this, and any method such as a piezo method may be used.
[0021]
The surface of the recording medium 2 is coated with a surface sealing material. The surface sealing material melts when heat is applied, and changes to a mirror-like shape when melted and cooled and hardened, thereby sealing the recorded image and providing a rich gloss. After recording by the recording head 1, the recording surface is pressed by the heated upper rubber roller 4 and lower rubber roller 5, whereby the above-mentioned surface sealing material is melted. Furthermore, when the rubber roller rotates and moves in the direction of arrow p and is naturally cooled, it hardens to a mirror surface.
[0022]
Further, the following circuits for controlling the driving of the above mechanisms are provided. The main processing circuit 11 controls each part according to the instruction of the operator. The head drive circuit 12 converts the print information from the main processing circuit 11 into a drive signal for the print head 1 and sends it to the print head 1 and further to the ink ejection amount detection circuit 13. The ejection ink amount detection circuit 13 counts the number of ejection dots from the drive signal sent from the head drive circuit 12 and calculates the amount of ink ejected to the recording medium 2. Then, the calculated ink amount is sent to the warm air heater control circuit 14, the temperature control circuit 16, and the motor control circuit 17. The hot air heater control circuit 14 drives or stops the hot air heater 3 based on the ink amount sent from the ejection ink amount detection circuit 13. The temperature detection circuit 15 detects the surface temperature of the upper and lower rubber rollers 4 and 5 using the temperature sensor 10 and sends the detected temperature to the temperature control circuit 16. The temperature control circuit 16 turns on / off the upper and lower halogen lamps 6 and 7 based on the surface temperatures of the upper and lower rubber rollers 4 and 5 sent from the temperature detection circuit 15 and the ink amount from the ejection ink amount detection circuit 13. Controls turning off. The motor control circuit 17 controls the driving of a motor 18 that rotates the upper and lower rubber rollers according to the amount of ink sent from the ejection ink amount detection circuit 13.
[0023]
By the way, as described in the problem, the amount of heat required for the thermal transformation of the surface sealing material varies depending on the amount of ink to be ejected onto the recording medium. Hereinafter, control of the amount of heat supplied to the recording medium in the present embodiment will be described.
[0024]
The amount of heat supplied to the surface sealing material is proportional to the temperature difference between the upper and lower rubber rollers 4 and 5 and the recording medium 2 and the heating time. Therefore, in order to increase the amount of heat to be supplied, the temperature of the upper and lower rubber rollers 4 and 5 is increased, or the rotational speed of the upper and lower rubber rollers 4 and 5 is decreased so that the time during which the recording medium 2 and the upper and lower rubber rollers 4 and 5 are in contact with each other. To make it longer. In the present embodiment, a method of changing the temperature while rotating the upper and lower rubber rollers 4 and 5 at a constant speed will be described.
[0025]
The temperature control circuit 16 receiving the ink amount calculated by the ejection ink amount detection circuit 13 obtains a suitable one from the temperature threshold values set in advance for each ink amount. If the temperature of the upper and lower rubber rollers 4 and 5 detected by the temperature detection circuit 15 has not reached the threshold value, the upper and lower halogen lamps 6 and 7 are turned on, and the upper and lower rubber rollers 4 and 5 are heated. When the threshold value is reached, the upper and lower halogen lamps 6, 7 are turned off.
[0026]
This threshold value is set to a higher temperature as the ink amount increases. Therefore, the higher the amount of ink to be ejected, the higher the temperature of the upper and lower rubber rollers, and the greater the amount of heat supplied to the recording medium 2. Conversely, if the amount of ink ejected is small, the threshold value also drops, so that the temperature of the upper and lower rubber rollers is lower than when the amount of ink is large, and the amount of heat supplied to the recording medium 2 is also small.
[0027]
On the other hand, the motor control circuit 17 rotates the upper and lower rubber rollers 4 and 5 at a constant speed according to the driving of the recording head 1 irrespective of the ink amount detected by the ejection ink amount detection circuit 13.
[0028]
In this way, by adjusting the temperature of the upper and lower rubber rollers according to the amount of ink injected into the recording medium, it is possible to always supply the optimal amount of heat to the recording medium, thereby preventing insufficient thermal denaturation of the surface sealing material. be able to. Also, yellowing due to excessive heating can be prevented.
[0029]
(Embodiment 2)
In this embodiment, the temperature of the upper and lower rubber rollers is kept constant, and the amount of heat supplied to the recording medium is changed by changing the rotation speed of the upper and lower rubber rollers in accordance with the amount of ink ejected.
The configuration is the same as in the first embodiment.
[0030]
The head drive circuit 12 sends a drive signal to the print head 1 and the ejection ink amount detection circuit 13 based on the print information from the main arithmetic circuit 11. The ejection ink amount detection circuit 13 calculates the ejection ink amount in the same manner as in the first embodiment.
[0031]
The motor control circuit 16 that has received the ink amount calculated by the ejection ink amount detection circuit 13 obtains a suitable rotation speed from among the rotation speeds set in advance for each ink amount. Then, the motor 18 is driven so that the upper and lower rubber rollers 4 and 5 can rotate at the determined rotation speed.
[0032]
The rotation speed of the upper and lower rubber rollers 4 and 5 is set to be lower as the ink amount increases. Therefore, when the amount of ink to be discharged is large, the upper and lower rubber rollers 4 and 5 rotate slowly, so that the time during which the recording medium 2 stays in the nip 8 becomes longer. Therefore, the amount of heat supplied to the recording medium 2 also increases.
[0033]
By controlling the rotation speed of the upper and lower rubber rollers 4 and 5 in accordance with the amount of ink, the amount of heat supplied is adjusted by increasing or decreasing the contact time between the recording medium and the rubber roller.
[0034]
(Embodiment 3)
The amount of heat from the upper and lower rubber rollers is taken away by the heat of vaporization when the solvent of the ink that has landed on the recording medium evaporates, and the amount of heat necessary for the surface sealing material to undergo thermal denaturation is insufficient. It is sufficient that the solvent is evaporated before the paper is passed through the rubber roller. Therefore, in the present embodiment, by controlling the hot air heater that sends hot air to the recording medium before the recording medium is passed through the upper and lower rubber rollers, the solvent is always reliably evaporated even if the ink amount increases or decreases. I do.
The configuration is the same as in the first embodiment.
[0035]
The head drive circuit 12 sends a drive signal to the print head 1 and the ejection ink amount detection circuit 13 based on the print information from the main arithmetic circuit 11. The ejection ink amount detection circuit 13 calculates the ejection ink amount in the same manner as in the first embodiment.
[0036]
The warm air heater control circuit 14 which has received the ink amount calculated by the ejection ink amount detection circuit 13 sets the operation / stop of the heater fan in advance as a predetermined ink amount as a threshold value. If the calculated ink amount has reached the threshold value, the heater fan is operated for a certain period of time. If the threshold has not been reached, stop the operation. That is, when the amount of ink ejected on the recording medium is large, the warm air heater is driven to promote the evaporation of the solvent. On the other hand, when the amount of the ejected ink is small, the hot air heater is not operated, so that power is not wasted.
[0037]
The control of the hot air heater may be performed in combination with the first and second embodiments.
[0038]
(Embodiment 4)
In the case of "double-sided recording" in which recording is performed on both sides of the recording medium, about twice as much solvent is present on the recording medium when the recording is performed to the same extent on both sides as compared with the case where recording is performed on only one side. Therefore, the heat of vaporization of the solvent is also doubled, and the heat treatment similar to the one-sided recording results in insufficient thermal denaturation of the surface sealing material. In the present embodiment, a case of double-sided printing will be described.
[0039]
FIG. 2 is a schematic diagram of an inkjet recording apparatus having a double-sided recording function.
In the present embodiment, a double-sided recording recognition circuit 19 and a reversing mechanism 20 are further added to the configuration of the first embodiment.
[0040]
The user inputs to the main arithmetic circuit 11 that the recording is double-sided recording and the recording information. The main processing circuit 11 sends the recording information input by the user and an instruction for double-sided recording to the head drive circuit 12.
[0041]
The head drive circuit 12 first generates a drive signal for one side (hereinafter, also referred to as “front side”) of the print head 1 based on the print information from the main arithmetic circuit 11, and the drive signal is generated by the print head 1 and the amount of ink ejected. It is sent to the detection circuit 13.
[0042]
The recording head 1 performs recording by discharging ink on one surface (front surface) of the recording medium 2. When the recording for one side is completed, the reversing mechanism 20 reverses the recording medium 2 and sets the recording medium 2 in front of the recording head 1 so that recording can be performed on the other side (hereinafter, also referred to as “back side”). The structure of the reversing mechanism 20 is an existing one.
[0043]
After printing on the front side, the head drive circuit 12 sends a drive signal for the back side to the print head 1 and the ejection ink amount detection circuit 13. The recording head 1 performs recording by discharging ink on the back surface of the recording medium 2.
[0044]
On the other hand, the ejection ink amount detection circuit 13 calculates the amount of ink to be ejected onto the surface of the recording medium 2 from the drive signal sent from the head drive circuit 12 in the same manner as in the first embodiment. Further, the amount of ink to be ejected to the back surface is also calculated from the transmitted drive signal for the back surface, and the total is calculated to calculate the amount of ink to be ejected to both surfaces of the recording medium 2. Then, the calculated ink amount for both sides is sent to the double-sided recording recognition circuit 19.
[0045]
The double-sided recording recognition circuit 19 informs the hot air heater control circuit 14, the temperature control circuit 16, and the motor control circuit 17 that the recording is double-sided based on the double-sided recording command input to the main processing circuit 11.
[0046]
The temperature control circuit 16 receiving the ink amount calculated by the ejection ink amount detection circuit 13 obtains a suitable one from the temperature thresholds for double-sided printing set in advance for each ink amount. If the temperature of the upper and lower rubber rollers 4 and 5 detected by the temperature detection circuit 15 has not reached the threshold value, the upper and lower halogen lamps 6 and 7 are turned on, and the upper and lower rubber rollers 4 and 5 are heated. When the threshold value is reached, the upper and lower halogen lamps 6, 7 are turned off.
[0047]
The temperature threshold for double-sided printing is set for an ink amount larger than the ink amount set for single-sided printing. As in the first embodiment, the threshold value is set higher as the ink amount is larger.
[0048]
Further, the motor control circuit 17 which has received the ink amount calculated by the ejection ink amount detection circuit 13 obtains a suitable rotation speed from among the two-sided recording rotation speeds set in advance for each ink amount. Then, the motor 18 is driven so that the upper and lower rubber rollers 4 and 5 can rotate at the determined rotation speed.
[0049]
The rotation speed for double-sided printing is also set for an ink amount larger than that set for single-sided printing. As in the first embodiment, the larger the ink amount, the lower the rotation speed, and the recording medium 2 stays in the nip 8 for a longer time.
[0050]
It should be noted that either the temperature control or the speed control of the upper and lower rubber rollers may be performed, or both may be performed.
[0051]
Further, the warm air heater control circuit 14 receiving the ink amount calculated by the ejection ink amount detection circuit 13 sets the operation / stop of the heater fan in advance as a predetermined ink amount for double-sided recording as a threshold value, If the ink amount calculated by the ejection ink amount detection circuit 13 has reached the threshold value, the heater fan is operated for a certain time. If the threshold has not been reached, stop the operation.
[0052]
As described above, even in the case of double-sided printing in which the amount of ink injected into the recording medium 2 is larger than that in single-sided printing, the hot air from the hot air heater is applied to the recording medium 2 to promote the evaporation of the ink solvent, and Thermal transformation of the sealing material is sufficiently performed.
[0053]
(Other)
The form of the ink jet recording apparatus to which the present invention can be applied includes a form used for an image output terminal of an information processing device such as a computer, a copying apparatus combined with a reader or the like, and a facsimile apparatus having a transmission / reception function. Or the like.
[0054]
【The invention's effect】
As described above, by using the present invention, an appropriate amount of heat can be applied to the recording medium in accordance with an increase or decrease in the amount of ink to be injected into the recording medium. It is possible to prevent occurrence of a phenomenon due to insufficient thermal denaturation of the material.
[0055]
Conversely, even when the amount of ink to be ejected is small, the amount of heat is not excessively applied, so that a phenomenon such as yellowing can be prevented.
[0056]
In addition, since the rotational speed of the upper and lower rubber rollers is controlled in accordance with the increase and decrease in the amount of ink to be ejected, the throughput is prevented from becoming unnecessarily slow when the amount of ink to be ejected is small. Can prevent insufficient heat conversion.
[0057]
In addition, since the operation / stop of the hot air heater is controlled in accordance with the increase / decrease of the amount of ejected ink, unnecessary operation of the hot air heater is not performed, so that waste of power can be prevented.
[0058]
Furthermore, in the case of double-sided printing, by controlling the temperature, speed of the upper and lower rubber rollers, and the operation of the hot air heater for double-sided printing, an appropriate amount of heat can always be applied to the printing medium even when the amount of ejected ink is large. The thermal transformation of the surface sealing material can be sufficiently performed.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an inkjet recording apparatus according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of an inkjet recording apparatus that supports double-sided recording.
FIG. 3 is a graph showing a relationship between the amount of ink ejected on a recording medium and the evaporation of a solvent in the ink.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Recording head 2 Recording medium 3 Hot air heater 4 Upper rubber roller 5 Lower rubber roller 6 Upper halogen lamp 7 Lower halogen lamp 8 Nip 9 Temperature sensor (upper side)
10 Temperature sensor (lower side)

Claims (23)

An ink jet recording apparatus having a heating unit for melting the ink when heated and then discharging the ink to a recording medium coated with a surface sealing material that changes to a mirror-like surface when cooled and then cooling the recording medium At
An applied ink amount measuring unit for measuring an applied ink amount to the recording medium,
The ink jet recording apparatus according to claim 1, wherein the heating unit adjusts an amount of heat applied to the recording medium according to the applied ink amount measured by the applied ink amount measuring unit. 2. The ink jet recording apparatus according to claim 1, wherein the heating unit increases the amount of heat applied to the recording medium as the applied ink amount measured by the applied ink amount measurement unit increases. 3. The heating means has two rubber rollers facing each other, and when the recording medium is sandwiched and pressed by the two rubber rollers, the two rubber rollers are used in accordance with the applied ink amount measured by the applied ink amount measuring means. 3. The ink jet recording apparatus according to claim 1, wherein the amount of heat applied to the recording medium is adjusted by adjusting the surface temperature of the rubber roller. 4. The ink jet recording apparatus according to claim 3, wherein the heating unit adjusts the surface temperature of the two rubber rollers to a higher temperature as the applied ink amount measured by the applied ink amount measuring unit increases. The heating means has two rubber rollers facing each other, and when the recording medium is sandwiched and pressed by the two rubber rollers, the two rubber rollers are used in accordance with the applied ink amount measured by the applied ink amount measuring means. 3. The ink jet recording apparatus according to claim 1, wherein the amount of heat applied to the recording medium is adjusted by adjusting the rotation speed of the rubber roller. 6. The ink jet recording apparatus according to claim 5, wherein the heating unit adjusts the rotation speed of the two rubber rollers to be lower as the applied ink amount measured by the applied ink amount measuring unit is larger. The heating means includes hot air blowing means for applying hot air to the recording medium,
3. The ink jet recording apparatus according to claim 1, wherein the operation / stop of the hot air blowing unit is controlled according to the applied ink amount measured by the applied ink amount measuring unit. 8. The ink jet recording apparatus according to claim 7, wherein the hot air blowing unit operates for a predetermined time when the applied ink amount measured by the applied ink amount measuring unit exceeds a predetermined threshold. 9. The ink jet recording apparatus according to claim 7, wherein the hot air blower is capable of applying hot air to the recording medium prior to the two rubber rollers. 10. The hot air blowing means may send the recording medium to the two rubber rollers in a state where hot air is not applied to the recording medium when the applied ink amount measured by the applied ink amount measuring means is less than a predetermined threshold. The inkjet recording apparatus according to claim 9, wherein: A double-sided recording determination unit that detects whether or not the recording has been performed on both sides of the recording medium,
2. The method according to claim 1, wherein when the double-sided recording determining unit determines that the recording is the double-sided recording, the applied ink amount measuring unit sets the total amount of the ink applied to both sides of the recording medium as the applied ink amount. 11. The ink jet recording apparatus according to any one of claims 1 to 10. An ink jet recording apparatus that performs recording by discharging ink from a recording head to a recording medium, wherein the recording head generates bubbles in the ink by thermal energy, and discharges ink droplets by the pressure of the bubbles. The inkjet recording apparatus according to any one of claims 1 to 11, wherein: An ink jet recording method having a heating step of heating the recording medium after the ink is ejected to a recording medium coated with a surface sealing material that changes to a mirror-like shape when heated and melted and then cooled and then cooled At
An applied ink amount measuring step of measuring an applied ink amount to the recording medium,
The ink jet recording method according to claim 1, wherein in the heating step, an amount of heat applied to the recording medium is adjusted according to the applied ink amount measured in the applied ink amount measuring step. 14. The ink jet recording method according to claim 13, wherein in the heating step, the larger the amount of applied ink measured in the applied ink amount measuring step, the larger the amount of heat applied to the recording medium. In the heating step, when the recording medium is sandwiched and pressed by two facing rubber rollers, the surface temperature of the two rubber rollers is adjusted according to the applied ink amount measured in the applied ink amount measuring step. 15. The ink jet recording method according to claim 13, wherein the amount of heat applied to the recording medium is adjusted. 16. The ink jet recording method according to claim 15, wherein in the heating step, as the amount of applied ink measured in the applied ink amount measuring step is larger, the surface temperature of the two rubber rollers is adjusted to a higher temperature. In the heating step, when the recording medium is sandwiched and pressed by two facing rubber rollers, the rotation speed of the two rubber rollers is adjusted according to the applied ink amount measured in the applied ink amount measuring step. 15. The ink jet recording method according to claim 13, wherein the amount of heat applied to the recording medium is adjusted by the method. 18. The ink jet recording method according to claim 17, wherein the heating step adjusts the rotation speeds of the two rubber rollers to be lower as the applied ink amount measured in the applied ink amount measuring step is larger. The heating step includes a hot air blowing step of applying hot air to the recording medium,
15. The inkjet recording method according to claim 13, wherein the hot air blowing in the hot air blowing step is controlled according to the applied ink amount measured in the applied ink amount measuring step. 20. The ink jet recording method according to claim 19, wherein in the hot air blowing step, hot air is blown for a predetermined time when the applied ink amount measured in the applied ink amount measuring step exceeds a predetermined threshold. 21. The ink jet recording method according to claim 19, wherein in the hot air blowing step, hot air can be applied to the recording medium before the two rubber rollers. In the hot air blowing step, when the applied ink amount measured in the applied ink amount measuring step is less than a predetermined threshold, the recording medium is sent to the two rubber rollers without applying the hot air to the recording medium. The ink-jet recording method according to claim 21, wherein: A double-sided recording determination step of detecting whether or not recording has been performed on both sides of the recording medium,
14. The method according to claim 13, wherein when the double-sided printing determining step determines that the printing is double-sided printing, the applied ink amount measuring step sets the total amount of ink applied to both sides of the recording medium as the applied ink amount. 23. The ink jet recording method according to any one of the above items.

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