JP2010105389A - Recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a risk of deterioration in a recording accuracy due to shrinkage of a recording material in a recording device with a heating platen. <P>SOLUTION: A moisture measuring device 76 measures a moisture percentage of a base material FP of an adhesion paper P before being supported by the heating platen 53. For instance, a well-known moisture meter can be used. A recording control part 100 changes recording control to the adhesion paper P based on the moisture percentage of the base material FP of the adhesion paper P measured by the moisture measuring device 76. Since appropriate recording control can be executed according to the shrinkage percentage of the base material FP when supported by the heating platen 53, the risk of deterioration in the recording accuracy due to the shrinkage of the base material FP of the adhesion paper P can be reduced. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a recording apparatus that performs recording by ejecting ink from a recording head onto a recording material supported by a heating platen.

  In a recording apparatus such as an ink jet printer, a recording apparatus provided with means for heating a platen that supports a recording material in a region where ink is ejected from a recording head is known. For example, in an ink jet printer that uses a hot-melt solid ink that is solid at room temperature and melts when heated above a predetermined temperature, the ink dots that are jetted and solidified on the recording surface of the recording material are heated by the platen. Since the ink dots are remelted, the ink dots solidified in a protruding shape on the recording surface of the recording material can be flattened (see, for example, Patent Document 1). On the other hand, in an inkjet printer using a general water-based ink or the like, solidification by drying of the ink jetted onto the recording material is promoted by the heat of the platen, so that high-quality recording with less ink dot bleeding is possible. Can be realized.

Japanese Patent Laid-Open No. 5-138985

  In general, since the recording material contains water at a moisture content of about several percent, the recording material has stretchability with respect to temperature change. In other words, the recording material has a property that when the moisture content fluctuates due to a change in temperature, the recording material contracts or expands accordingly. Therefore, in a recording apparatus provided with a platen heated by the heating means as described above (hereinafter referred to as “heated platen”), the recording material supported by the heated platen has a moisture content by being heated. Decrease and shrink. That is, since the recording material supported by the heating platen gradually contracts during recording, the ink landing position with respect to the recording material gradually deviates from the position where the ink should originally land. There is a risk that the recording accuracy may be lowered.

  As a method of avoiding such a decrease in recording accuracy, for example, recording is not performed immediately while the recording material is supported by the heating platen, and a certain time is required until the contraction of the recording material is stabilized. It may be possible to start recording after waiting. However, such a method is not practical because a long waiting time is indispensable every time recording is performed on the recording material, and the throughput of the recording apparatus is greatly reduced.

  The present invention has been made in view of such a situation, and its problem is to reduce the possibility that the recording accuracy is lowered due to the shrinkage of the recording material in the recording apparatus provided with the heating platen. There is.

  In order to achieve the above object, according to a first aspect of the present invention, there is provided a recording execution unit for performing recording by ejecting ink from a recording head onto a recording material supported by a heating platen, and controlling the recording execution unit. And a control device, comprising: a moisture measuring device for measuring a moisture content of the recording material before being supported by the heating platen, wherein the control device is a substrate measured by the moisture measuring device. The recording apparatus is characterized in that the recording control for the recording material is changed based on the moisture content of the recording material.

  The shrinkage rate of the recording material can be obtained, for example, by dividing the dimensional difference of the recording material before and after shrinkage by the size of the recording material before shrinkage. In many cases, the shrinkage ratio of the recording material when the moisture content is reduced by heating tends to be proportional to the moisture content at room temperature. That is, the higher the moisture content at room temperature, the easier the recording material is to shrink. That is, the shrinkage rate of the recording material when heated by the heating platen can be predicted from the moisture content of the recording material at normal temperature before being supported by the heating platen.

  For this reason, the present invention is characterized in that the recording control for the recording material is changed based on the moisture content of the recording material at normal temperature measured by the moisture measuring device. Accordingly, it is possible to execute appropriate recording control according to the shrinkage rate of the recording material when supported by the heating platen. Therefore, according to the present invention, in the recording apparatus provided with the heating platen, there is an effect that it is possible to reduce the possibility that the recording accuracy is lowered due to the shrinkage of the recording material.

  Here, the change in the recording control based on the moisture content of the recording material means that the shrinkage rate of the recording material when supported by the heating platen is predicted from the moisture content at normal temperature, and the predicted shrinkage rate is within an allowable range. Whether or not the recording material is to be recorded or stopped depending on whether or not (decrease in recording accuracy due to shrinkage of the recording material is within an allowable range). Also included is control for adjusting the ink ejection timing in accordance with the predicted shrinkage of the recording material so that the ink ejected from the recording head will land at the position where it should land originally. Further, the method includes adjusting a relative ink ejection position with respect to the recording material in accordance with the predicted shrinkage rate of the recording material so that the ink ejected from the recording head is landed at a position where the ink should originally land. Furthermore, the shrinkage of the recording material by directly acting on the recording material according to the predicted shrinkage rate of the recording material so that the shrinkage rate of the recording material when supported by the heating platen is within an allowable range. Execution of control for suppressing the above.

  According to a second aspect of the present invention, in the recording apparatus according to the first aspect described above, the humidity control apparatus for adjusting the moisture content of the recording material before being supported by the heating platen is provided, and the control is performed. The apparatus is a recording apparatus that controls the humidity control apparatus based on a moisture content of the recording material measured by the moisture measuring apparatus.

  The shrinkage rate of the recording material when supported by the heating platen can be suppressed by adjusting the moisture content of the recording material before recording. Therefore, by adjusting the moisture content of the recording material based on the moisture content measured by the moisture measuring device before executing the recording, the shrinkage rate of the recording material when supported by the heating platen is reduced within an allowable range. It becomes possible. Thereby, in the recording apparatus provided with the heating platen, there is an effect that the possibility that the recording accuracy is lowered due to the shrinkage of the recording material can be reduced.

  According to a third aspect of the present invention, in the recording apparatus according to the first aspect or the second aspect described above, the recording apparatus includes a temperature adjusting device that adjusts a temperature of the heating platen, and the control device includes the moisture measuring device. The temperature of the heating platen is adjusted based on the moisture content of the recording material measured by the recording apparatus.

  The shrinkage rate of the recording material when supported by the heating platen varies depending on the temperature of the heating platen. That is, the shrinkage rate of the recording material when supported by the heating platen can be adjusted by increasing or decreasing the temperature of the heating platen. Therefore, by setting the temperature of the heating platen to an appropriate temperature within the range where the heating platen functions effectively based on the moisture content measured by the moisture measuring device, the recording material when supported by the heating platen It becomes possible to reduce the shrinkage rate within an allowable range. Thereby, in the recording apparatus provided with the heating platen, there is an effect that the possibility that the recording accuracy is lowered due to the shrinkage of the recording material can be reduced.

  According to a fourth aspect of the present invention, in the recording apparatus according to any one of the first to third aspects described above, the release paper is peeled off from the base material of the recording material, and at least the peeled base material or release paper is provided. A pre-recording means for re-adhering the substrate and the release paper after heating either one; a first conveyance path through which the recording material is conveyed to the heating platen via the pre-recording means; And a second conveyance path through which the recording material is conveyed to the heating platen without passing through the pre-recording processing means.

  As an example of a recording material, a known adhesive paper forms an adhesive layer by applying an adhesive to the back surface of a substrate (also referred to as an upper paper) on which recording is performed. Is a recording material in which the adhesive layer is releasably adhered to the adhesive layer and the adhesive layer is covered with release paper. Because such adhesive paper is made of a different material and structure for the base material and release paper, the moisture content of the base material at normal temperature and the moisture content of the release paper are often different, and the temperature changes In many cases, the base material and release paper also have different elasticity. Therefore, in a recording apparatus equipped with a heated platen, when the adhesive paper is supported by the heated platen and heated, thereby reducing the moisture content of the base material and the release paper, the shrinkage rate of the base material and the release paper is reduced. Due to the difference, the adhesive paper may be warped. Furthermore, since the properties of the base material and the properties of the release paper vary widely depending on the type of adhesive paper, the shape and degree of warpage generated on the adhesive paper supported by the heated platen will differ depending on the type of adhesive paper. Come.

  The warping of the adhesive paper on the heating platen becomes a factor that causes head rubbing. Here, the head rubbing means that a part of the adhesive paper comes into contact with a recording head that should not be in contact with the part of the adhesive paper as it floats from the support surface of the heating platen. When such head rubbing occurs, the recording surface of the base material is scratched or excessive ink adheres, and the recording image quality deteriorates, and the recording head is damaged by the impact at the time of contact. There is a fear.

  In the recording apparatus according to the fourth aspect of the present invention, at least one of the base material and the release paper is preliminarily heated and shrunk in the adhesive paper that has undergone the recording pretreatment means. Since it is re-adhered, the shrinkage rate of the base material or release paper that occurs when it is supported by the heating platen and heated is reduced. That is, by passing through the recording pretreatment means, it becomes possible to reduce the shrinkage rate and warpage of the adhesive paper when supported by the heating platen. Accordingly, it is possible to reduce a decrease in recording accuracy due to the shrinkage of the adhesive paper, and it is possible to reduce the possibility of head rubbing due to the warpage of the adhesive paper.

  For example, based on the moisture content measured by the moisture measuring device, the shrinkage rate of the base material of the adhesive paper is predicted to exceed the allowable range from the viewpoint of recording accuracy, or the adhesive paper is supported by the heating platen When it is predicted that there is a high possibility that head warp will occur due to warping of a certain size or more, the first transport is performed so that the adhesive paper is transported to the heating platen via the recording pretreatment means. Select the path and feed the adhesive paper. Thereby, in the recording apparatus provided with the heating platen, it is possible to reduce the possibility that the recording accuracy is lowered due to the shrinkage of the adhesive paper, and also reduce the possibility of the head rubbing due to the warp of the adhesive paper. The effect that it can be obtained.

  According to a fifth aspect of the present invention, in the recording apparatus according to any one of the first to fourth aspects described above, the control device includes a moisture content of the recording material measured by the moisture measuring device and the recording target. The recording apparatus is characterized in that the recording control for the recording material is changed based on the type of the material.

  The material forming the recording material and the structure of the recording material differ depending on the type of the recording material. Therefore, the stretchability of the recording material with respect to temperature changes may vary depending on the type of recording material. Therefore, the shrinkage rate of the recording material when the moisture content is reduced by heating may differ depending on the type of the recording material in addition to the moisture content at normal temperature. For this reason, in the present invention, it is preferable to change the recording control for the recording material based on the moisture content of the recording material measured by the moisture measuring device and the type of the recording material. As a result, the shrinkage rate of the recording material when supported by the heating platen can be predicted more accurately. Therefore, in a recording apparatus equipped with a heating platen, the recording accuracy is caused by the shrinkage of the recording material. The effect of being able to further reduce the risk of the decrease in the temperature is obtained.

  According to a sixth aspect of the present invention, there is provided a recording execution unit that performs recording by ejecting ink from a recording head onto a recording material supported by a heating platen, and a control device that controls the recording execution unit. In the recording apparatus, the recording apparatus further includes a shrinkage ratio measuring unit that measures a shrinkage ratio of the recording material that is supported by the heating platen, and the control device calculates the shrinkage ratio of the recording material measured by the shrinkage ratio measuring means. The recording apparatus is characterized in that the recording control for the recording material is changed based on the recording material.

  According to such a feature, the shrinkage of the recording material when supported by the heating platen is changed by changing the recording control for the recording material based on the shrinkage rate of the recording material measured by the shrinkage rate measuring means. Appropriate recording control can be executed according to the rate. Thereby, in the recording apparatus provided with the heating platen, there is an effect that the possibility that the recording accuracy is lowered due to the shrinkage of the recording material can be reduced.

  Here, the change of the recording control based on the shrinkage rate of the recording material selects whether to execute recording on the recording material or to stop depending on whether the measured shrinkage rate of the recording material is within an allowable range. Including that. Also included is control for adjusting the ink ejection timing in accordance with the measured shrinkage rate of the recording material so that the ink ejected from the recording head will land at the position where it should land originally. Further, the method includes adjusting a relative ink ejection position with respect to the recording material in accordance with the measured shrinkage rate of the recording material so that the ink ejected from the recording head is landed at a position where the ink should originally land. Further, the shrinkage of the recording material by directly acting on the recording material according to the measured shrinkage rate of the recording material so that the shrinkage rate of the recording material when supported by the heating platen is within an allowable range. Execution of control for suppressing the above.

  According to a seventh aspect of the present invention, in the recording apparatus according to the sixth aspect described above, the humidity control apparatus for adjusting the moisture content of the recording material before being supported by the heating platen is provided, and the control is performed. The apparatus is a recording apparatus characterized in that the humidity control device is controlled based on a shrinkage rate of a recording material measured by the shrinkage rate measuring means.

  The shrinkage rate of the recording material when supported by the heating platen can be suppressed by adjusting the moisture content of the recording material before recording. Therefore, the shrinkage rate of the recording material when supported by the heating platen is allowed by adjusting the moisture content of the recording material based on the shrinkage rate of the recording material measured by the shrinkage rate measuring means before executing the recording. It becomes possible to reduce within the range. Thereby, in the recording apparatus provided with the heating platen, there is an effect that the possibility that the recording accuracy is lowered due to the shrinkage of the recording material can be reduced.

  According to an eighth aspect of the present invention, in the recording apparatus according to the sixth aspect or the seventh aspect described above, the recording apparatus includes a temperature adjusting device that adjusts a temperature of the heating platen, and the control device measures the shrinkage rate. The recording apparatus is characterized in that the temperature of the heating platen is adjusted based on the shrinkage ratio of the recording material measured by the means.

  The shrinkage rate of the recording material when supported by the heating platen varies depending on the temperature of the heating platen. That is, the shrinkage rate of the recording material when supported by the heating platen can be adjusted by increasing or decreasing the temperature of the heating platen. Therefore, when supported by the heating platen by setting the temperature of the heating platen to an appropriate temperature within the range where the heating platen functions effectively based on the shrinkage rate of the recording material measured by the shrinkage rate measuring means It is possible to reduce the shrinkage rate of the recording material within an allowable range. Thereby, in the recording apparatus provided with the heating platen, there is an effect that the possibility that the recording accuracy is lowered due to the shrinkage of the recording material can be reduced.

  According to a ninth aspect of the present invention, there is provided a moisture measuring device for measuring the moisture content of a recording material, and peeling the release paper from the substrate of the recording material, and at least one of the peeled substrate and the release paper Pre-recording means for re-adhering the substrate and release paper after heating, a recording execution means for performing recording by ejecting ink from a recording head onto a recording material supported by a heating platen, and the recording A controller for controlling the preprocessing means and the recording execution means; and a first transport path through which the recording material passing through the moisture measuring device is transported to the heating platen via the recording preprocessing means. The control device performs heating control of the peeled substrate or release paper in the recording pretreatment means based on the moisture content of the recording material measured by the moisture measuring device. It is.

  According to a tenth aspect of the present invention, in the recording apparatus according to the ninth aspect described above, the moisture measuring device includes a first moisture measuring device for measuring the moisture content of the base material of the recording material, A second moisture measuring device for measuring the moisture content of the release paper of the recording material, wherein the control device measures the moisture content of the base material measured by the first moisture measuring device and the second moisture measuring device. The recording apparatus is characterized in that, based on the moisture content of the release paper measured by the above, the heating control of the peeled substrate or release paper in the pre-recording processing means is executed.

  According to an eleventh aspect of the present invention, in the recording apparatus according to the ninth aspect or the tenth aspect described above, the recording material that has passed through the moisture measuring device does not pass through the recording pretreatment means, and the heating is performed. The recording apparatus includes a second transport path that is transported to the platen.

1 is a plan view of a main part of a first embodiment of an ink jet printer according to the present invention. 1 is a side view of an essential part of a first embodiment of an ink jet printer according to the present invention. The principal part side view of 2nd Example of the inkjet printer which concerns on this invention. The principal part side view of 2nd Example of the inkjet printer which concerns on this invention. The principal part top view of 3rd Example of the inkjet printer which concerns on this invention. The top view which illustrated typically the procedure which records a test pattern on the base material of adhesive paper. The principal part side view of 4th Example of the inkjet printer which concerns on this invention. The principal part side view of 5th Example of the inkjet printer which concerns on this invention. The principal part side view of 6th Example of the inkjet printer which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First embodiment>
A first embodiment of an ink jet printer 50 according to the present invention will be described with reference to FIGS.

FIG. 1 is a plan view of a main part of a first embodiment of an ink jet printer 50, and FIG. 2 is a side view of the main part.
The ink jet printer 50 is a recording apparatus that performs recording by ejecting water-based ink from the recording head 62 onto the base material FP of the adhesive paper P as a “recording material” supported by the heating platen 53. Adhesive paper P is applied to the back surface of the substrate FP on which recording is performed to form an adhesive layer, and the release paper RP is releasably adhered to the adhesive layer to release the adhesive layer. The recording paper is covered with paper RP.
The ink jet printer 50 according to the present invention is not limited to the adhesive paper P, and can perform recording on a general recording paper such as plain paper or photographic paper, and further, the adhesive paper wound in a roll shape. It is possible to perform recording on a single sheet of recording paper in addition to P or a recording paper wound in a roll shape. Hereinafter, the adhesive paper P wound in a roll shape will be described as an example. .

  The heating platen 53 is a member that supports the adhesive paper P from the back side (release paper side) and heats the adhesive paper P in an area where ink can be ejected by the recording head 62. In the ink jet printer 50 provided with such a heating platen 53, the drying of the ink jetted onto the base material FP of the adhesive paper P is promoted by the heat of the heating platen 53, so that there is little ink dot bleeding and the like. Recording can be realized.

  The recording head 62 is mounted on the carriage 61, and a large number of ink ejection nozzles are provided on the head surface facing the base material FP of the adhesive paper P supported by the heating platen 53. A drive circuit (not shown) of the recording head 62 is controlled by the recording control unit 100.

  The Y-direction movable unit 64 has two X-direction guide shafts 63, a left movable member 64L, and a right movable member 64R. The left movable member 64L is supported by the Y-direction guide shaft 65L so as to be able to reciprocate in the sub-scanning direction Y. The right movable member 64R is supported by the Y-direction guide shaft 65R so as to be able to reciprocate in the sub-scanning direction Y. One end side of the two X direction guide shafts 63 is supported by the left movable member 64L, and the other end side is supported by the right movable member 64R. The carriage 61 is supported by the two X-direction guide shafts 63 so as to reciprocate in the main scanning direction X.

  That is, the Y-direction movable unit 64 is supported so as to be able to reciprocate in the sub-scanning direction Y, and the carriage 61 is supported on the Y-direction movable unit 64 so as to be capable of reciprocating in the main scanning direction X. Accordingly, the carriage 61 is supported so as to be reciprocable in the main scanning direction X and the sub-scanning direction Y.

  The Y-direction movable unit 64 has X-direction drive means for reciprocating the carriage 61 in the main scanning direction X. The X-direction drive means is a drive mechanism (not shown) that rotates, for example, an endless belt that is suspended between pulleys along the main scanning direction X, and a part of the endless belt is connected to the carriage 61. Is done. Further, the X-direction drive means has a known rotary encoder (not shown) as means for detecting the rotation of the motor that rotates the endless belt. The recording control unit 100 executes position control and speed control of the carriage 61 in the main scanning direction X by controlling the rotation of the motor based on the output signal of the rotary encoder.

  The Y-direction movable unit 64 reciprocates in the sub-scanning direction Y by the Y-direction driving unit. The Y-direction drive means is a drive mechanism (not shown) that rotates, for example, an endless belt suspended between pulleys along the sub-scanning direction Y, and a part of the endless belt is movable in the Y direction. The unit 64 is connected to the left movable member 64L or the right movable member 64R. Further, the Y direction driving means has a known rotary encoder (not shown) as means for detecting the rotation of the motor that rotates the endless belt. The recording control unit 100 executes position control and speed control of the carriage 61 in the sub-scanning direction Y by controlling the rotation of the motor based on the output signal of the rotary encoder.

  The recording control unit 100 controls to form ink dots on the recording surface of the substrate FP by ejecting ink from the recording head 62 while scanning the recording head 62 in the main scanning direction X, and to move the recording head 62 in the sub-scanning direction Y. By repeating the scanning control, recording is performed on the base material FP of the adhesive paper P supported by the heating platen 53.

  On the upstream side of the heating platen 53 in the conveyance direction YF, a roller pair including a first conveyance driving roller 51 and a first conveyance driven roller 52 is disposed. A pair of rollers including a second transport driving roller 54 and a second transport driven roller 55 is disposed downstream of the heating platen 53 in the transport direction YF. These are means for transporting the adhesive paper P in the transport direction YF and transporting it onto the heating platen 53, and discharging the portion of the adhesive paper P after recording in the transport direction YF. The 1st conveyance drive roller 51 and the 2nd conveyance drive roller 54 rotate with the rotational drive force of the motor which is not shown in figure. The rotation of the first transport driving roller 51 and the second transport driving roller 54 is controlled by the recording control unit 100.

  In the following description, “upstream side” and “downstream side” mean the upstream side and the downstream side in the transport direction YF unless otherwise specified.

  On the upstream side of the “recording execution means” described above, a feeding means for the adhesive paper P is disposed. The feeding unit includes an adhesive paper support shaft 71, a driven guide roller 72, a feeding roller 73, and a driven roller 74. The adhesive paper support shaft 71 supports the adhesive paper P wound in a roll shape. The driven guide roller 72 is a roller for guiding the adhesive paper P to the nip point between the feeding roller 73 and the driven roller 74, and is rotatably supported by the shaft. The feeding roller 73 is a roller for feeding the adhesive paper P wound in a roll supported by the adhesive paper support shaft 71, and rotates by receiving a rotational driving force of a motor (not shown). . The driven roller 74 is a roller for bringing the adhesive paper P into contact with the outer peripheral surface of the feeding roller 73 and is rotatably supported by the shaft.

  Further, in the ink jet printer 50 of the first embodiment, a moisture measuring device 76 is disposed between the above-described feeding means and “recording executing means”. The moisture measuring device 76 is a device for measuring the moisture content of the base material FP of the adhesive paper P before being supported by the heating platen 53. For example, a known moisture measuring device measures the moisture content from the electrical conductivity of the object. A moisture meter or the like can be used. The recording control unit 100 changes the recording control for the adhesive paper P based on the moisture content of the base material FP of the adhesive paper P measured by the moisture measuring device 76. As a result, it becomes possible to execute appropriate recording control according to the shrinkage rate of the base material FP when supported by the heating platen 53. Therefore, the recording accuracy is caused by the shrinkage of the base material FP of the adhesive paper P. It is possible to reduce the risk of the decrease.

  For example, the shrinkage rate of the base material FP when supported by the heating platen 53 is predicted from the moisture content at room temperature, and whether or not recording is performed on the adhesive paper P depending on whether the predicted shrinkage rate is within an allowable range or not. You can choose what to do. The criterion for determining whether or not the image quality is within the allowable range is determined by estimating the degree of decrease in the recording image quality due to the contraction of the base material FP from the predicted shrinkage rate of the base material FP and determining whether or not the decrease in the recording image quality is within the allowable range. It ’s fine.

  Further, for example, the ink ejection timing can be adjusted in accordance with the predicted shrinkage rate of the base material FP so that the ink ejected from the recording head 62 is landed on a position where the ink should land on the base material FP. More specifically, based on the predicted shrinkage rate of the base material FP, the distance between the head surface of the recording head 62 and the recording surface of the base material FP, the moving speed of the recording head 62 in the main scanning direction X, and the like. The amount of deviation of the ink landing position with respect to is estimated. Then, the ink ejection timing with respect to the movement position of the recording head 62 in the main scanning direction X may be adjusted based on the estimated deviation amount.

  Further, for example, the relative ink ejection position with respect to the base material FP according to the predicted shrinkage rate of the base material FP so that the ink ejected from the recording head 62 is landed at the position where the ink should land on the base material FP. Can be adjusted. More specifically, based on the predicted shrinkage rate of the base material FP, the distance between the head surface of the recording head 62 and the recording surface of the base material FP, the moving speed of the recording head 62 in the main scanning direction X, and the like. The amount of deviation of the ink landing position with respect to is estimated. Then, the scanning position in the sub-scanning direction Y of the recording head 62 may be adjusted based on the estimated shift amount. Alternatively, the used nozzle pattern of the recording head 62 may be changed based on the estimated deviation amount and the interval (nozzle pitch) of the ink ejection nozzles of the recording head 62. The change of the used nozzle pattern is, for example, shifting the ink ejecting nozzle used when forming a certain dot to another ink ejecting nozzle adjacent to the originally designated ink ejecting nozzle.

  Furthermore, in the ink jet printer 50 of the first embodiment, a humidity control device 75 is disposed upstream of the moisture measuring device 76. The humidity control device 75 is a device for adjusting the moisture content of the base material FP of the adhesive paper P before being supported by the heating platen 53. For example, the humidity control device 75 is configured to dry the base material FP by spraying hot air on the surface of the base material FP, or to spray the water vapor on the surface of the base material FP, or the like. A humidifier for humidifying, or a combination of these.

  The recording control unit 100 controls the humidity control device 75 based on the moisture content of the base material FP of the adhesive paper P measured by the moisture measuring device 76, so that the moisture content of the base material FP of the adhesive paper P is recorded before execution. Can be adjusted. As a result, the shrinkage of the base material FP when supported by the heating platen 53 can be suppressed within an allowable range, so that the possibility that the recording accuracy is lowered due to the shrinkage of the base material FP is reduced. Can be made. For example, in order to reduce the shrinkage rate of the base material FP that occurs when the adhesive paper P is supported by the heating platen 53, the base material FP may be preheated and shrunk by the humidity controller 75. Alternatively, in consideration of the time for which the adhesive paper P is supported on the heating platen 53 to the extent that the shrinkage of the base material FP hardly occurs when the adhesive paper P is supported on the heating platen 53, the humidity control device 75 The substrate FP may be sufficiently humidified in advance.

  Furthermore, the inkjet printer 50 of the first embodiment includes a temperature adjustment device 531 that adjusts the temperature of the heating platen 53. The heating platen 53 has a heater or thermistor (not shown), and the temperature adjustment device 531 has a control circuit for the heater. When the recording control unit 100 controls the control circuit of the temperature adjusting device 531 based on the output signal of the thermistor, the temperature of the support surface with which the adhesive paper P of the heating platen 53 contacts is approximately 35 at which the heating platen 53 functions effectively. It can be maintained at an arbitrary temperature in the range of ˜60 degrees.

  The recording control unit 100 adjusts the temperature of the heating platen 53 based on the moisture content of the substrate FP of the adhesive paper P measured by the moisture measuring device 76, so that the substrate FP when supported by the heating platen 53 is adjusted. Shrinkage can be suppressed within an allowable range. As a result, it is possible to reduce the possibility that the recording accuracy is reduced due to the shrinkage of the base material FP. For example, the correlation of the shrinkage rate of the base material FP with respect to the temperature of the heating platen 53 is specified in advance by experiments or the like. Based on the experimental results and the like, the shrinkage rate of the base material FP when the adhesive paper P is supported by the heating platen 53 is within an allowable range in consideration of the time for which the adhesive paper P is supported by the heating platen 53. The temperature of the heating platen 53 may be adjusted.

  Note that each of the above-described controls that can be executed by the recording control unit 100 based on the moisture content of the base material FP of the adhesive paper P measured by the moisture measuring device 76 may be executed alone. It is also possible to execute in a complex manner as much as possible.

  Moreover, since the material and structure which form the base material FP of the adhesive paper P differ according to the kind of base material FP, the elasticity with respect to a temperature change may differ with the kind of base material FP. For example, a base material FP made of glossy paper or the like having gloss on the surface has a characteristic that it is relatively difficult for moisture to enter because the coat layer on the surface prevents moisture absorption and desorption. On the other hand, for example, a base material FP such as high-quality paper having no coating layer on the surface has a characteristic that moisture can easily enter and escape easily. That is, the moisture absorption / desorption characteristics (such as moisture absorption / desorption rate) of the substrate FP may vary depending on the type of the substrate FP. Therefore, the shrinkage rate of the base material FP when the moisture content decreases by being supported by the heating platen 53 and being heated varies depending on the type of the base material FP in addition to the moisture content of the base material FP at normal temperature. There is a case.

  Therefore, the above-described controls that can be executed by the recording control unit 100 based on the moisture content of the base material FP measured by the moisture measuring device 76 are performed on the base material FP measured by the moisture measuring device 76. In addition to the moisture content, it is preferable to carry out in consideration of the type of the base material FP. As a result, the shrinkage rate of the base material FP when supported by the heating platen 53 can be predicted more accurately, so that the recording accuracy may be reduced due to the shrinkage of the base material FP. Can be reduced. More specifically, for example, the correlation of the shrinkage rate of the base material FP with respect to the heating temperature is measured by experiment or the like for each type of the base material FP, and the table data or the like obtained as a database is stored in the nonvolatile memory What is necessary is just to memorize | store in memory (not shown) etc. previously and to make it refer according to the kind of base material FP of the adhesive paper P which the user set.

  As described above, according to the present invention, in the recording apparatus provided with the heating platen, it is possible to reduce the possibility that the recording accuracy is lowered due to the shrinkage of the recording material.

<Second embodiment>
A second embodiment of the inkjet printer 50 according to the present invention will be described with reference to FIGS.

3 and 4 are side views of the main part of the second embodiment of the ink jet printer 50. FIG.
The ink jet printer 50 according to the second embodiment includes the “recording execution unit” and the recording control unit 100 illustrated in FIGS. 1 and 2, and between the feeding unit and the “recording execution unit”. “Recording pre-processing means” is provided. The configurations of the “recording execution unit” and the recording control unit 100 are the same as those in the first embodiment, and a description thereof will be omitted.

The feeding unit of the inkjet printer 50 of the second embodiment has an adhesive paper support shaft 81, a first driven guide roller 82, a first feeding roller 83, and a first driven roller 84. The adhesive paper P fed by the first feeding roller 83 and the first driven roller 84 is conveyed to the heating platen 53 via the “recording pre-processing means” (first conveying path R1).
The adhesive paper support shaft 81, the first driven guide roller 82, the first feed roller 83, and the first driven roller 84 are respectively the adhesive paper support shaft 71, the driven guide roller 72, and the feed roller of the first embodiment. 73 and the driven roller 74 are the same constituent elements, and the description thereof is omitted.

  Further, the feeding means of the ink jet printer 50 of the second embodiment has a second driven guide roller 85, a second feeding roller 86, and a second driven roller 87. The adhesive paper P fed by the second feeding roller 86 and the second driven roller 87 is transported to the heating platen 53 without passing through the “recording pre-processing means” (second transport path R2). The second driven guide roller 85, the second feeding roller 86, and the second driven roller 87 are the same components as the first driven guide roller 82, the first feeding roller 83, and the first driven roller 84, respectively.

  Furthermore, in the inkjet printer 50 of the second embodiment, a moisture measuring device 76 is disposed between the first driven guide roller 82 and the second driven guide roller 85 and the adhesive paper support shaft 81. The moisture measuring device 76 is a device for measuring the moisture content of the base material FP of the adhesive paper P supported by the adhesive paper support shaft 81, and since it is the same component as in the first embodiment, description thereof is omitted. To do.

  The “recording pretreatment means” includes a “peeling means” for peeling the release paper RP from the base material FP of the adhesive paper P, a “heating means” for heating the base material FP after peeling, and a base material FP after heating. “Re-adhesion means” for re-adhering the release paper RP.

  The “peeling means” includes a peeling member 91 and a release paper conveying roller 92. The peeling member 91 is a wedge-shaped member that is disposed on the downstream side of the first feeding roller 83 and is long in the main scanning direction X. The adhesive paper P fed by the rotation of the first feed roller 83 is separated from the base material FP by the wedge-shaped blade edge portion of the peeling member 91 entering between the base material FP and the release paper RP. Is peeled off. At this time, a step between the front end of the base paper FP and the front end of the release paper RP is obtained by manually peeling the front end portion of the adhesive paper P in advance or by removing a part of the base material FP or the release paper RP. Is provided, the adhesive paper P can be easily and reliably peeled off by the peeling member 91. After being peeled off by the peeling member 91, the base material FP travels along the transport path indicated by reference sign A, and the release paper RP travels along the transport path indicated by reference sign B. The release paper transport roller 92 is a roller for transporting the release paper RP after being peeled off by the release member 91, and rotates by receiving a rotational driving force of a motor (not shown).

  The “heating means” has a heating device 93. The heating device 93 is disposed on the downstream side of the first feeding roller 83 and is a device that heats the base material FP to a predetermined temperature by being in surface contact with the base material FP after being peeled off by the peeling member 91. . The heating device 93 includes a heater, a thermistor, a heater control circuit, etc. (not shown). The recording control unit 100 controls the heater control circuit based on the output signal of the thermistor. As a result, the temperature of the portion of the heating device 93 that contacts the base material FP is maintained at a predetermined temperature. The temperature of the heating device 93 and the heating time of the base material FP are preferably adjusted according to, for example, the expansion / contraction characteristics with respect to the temperature of the base material FP, the moisture content at normal temperature, and the like.

  The “rebonding means” includes a first rebonding roller 94 and a second rebonding roller 95. The first re-adhesion roller 94 and the second re-adhesion roller 95 are disposed on the downstream side of the heating device 93, and rotate in synchronization with transmission of a rotational driving force of a motor (not shown). The base material FP heated after the peeling and the release paper RP after the peeling are merged by being guided by the nip point between the first re-adhesion roller 94 and the second re-adhesion roller 95 to be overlapped with each other. The adhesive roller 94 and the second re-adhesion roller 95 are re-adhered by being narrowed. The adhesive paper P after re-adhesion is sent to the nip point between the first conveyance driving roller 51 and the conveyance driven roller 52 by the rotation of the first re-adhesion roller 94 and the second re-adhesion roller 95.

  The adhesive paper P fed to the second transport path R <b> 2 by the rotation of the first feed roller 83 is first peeled off from the base material FP by the peeling member 91. Subsequently, the substrate FP is heated by the heating device 93. At this time, the base material FP contracts as the moisture content decreases. Subsequently, the base material FP and the release paper RP that are heated and contracted are re-bonded. The adhesive paper P that has undergone such a pre-recording process is re-adhered to the release paper RP in a state where the base material FP is preheated and contracted, so that the adhesive paper P is supported by the heating platen 53 and heated. The shrinkage rate of the base material FP generated at the time becomes small.

  That is, by allowing the adhesive paper P to pass through the “recording pre-processing means” in the first transport path R1, the shrinkage rate and warpage of the adhesive paper P when supported by the heating platen 53 can be reduced. Accordingly, it is possible to reduce a decrease in recording accuracy due to the shrinkage of the adhesive paper P, and it is possible to reduce the possibility of head rubbing due to the warpage of the adhesive paper P.

  In the inkjet printer 50 according to the second embodiment having such a configuration, before recording on the adhesive paper P, the moisture content of the base material FP of the adhesive paper P supported by the adhesive paper support shaft 81 is measured. An operator selects whether to transfer the adhesive paper P to the heating platen 53 via the first transport path R1 or the second transport path R2 according to the measured moisture content. can do.

  More specifically, the shrinkage rate of the base material FP is predicted from the measured moisture content of the base material FP. Furthermore, the magnitude of the warp that occurs when the adhesive paper P is supported by the heating platen 53 is predicted from the predicted shrinkage rate of the base material FP. When the shrinkage rate of the base material FP of the adhesive paper P is predicted to exceed the allowable range, or when the adhesive paper P is supported by the heating platen 53, a warp of a certain size or more occurs. When it is predicted that the rubbing is likely to occur, the leading edge of the adhesive paper P is held at the nip point between the first feeding roller 83 and the first driven roller 84, and the “pre-recording” of the first conveying path R1 is held. The adhesive paper P may be conveyed to the heating platen 53 via the “processing means”. As a result, it is possible to reduce the possibility that the recording accuracy is reduced due to the shrinkage of the adhesive paper P, and it is also possible to reduce the possibility that the head is rubbed due to the warp of the adhesive paper P. On the other hand, when it is predicted that the shrinkage rate of the base material FP does not exceed the allowable range, or when it is predicted that no warpage of a certain size or more will occur when the adhesive paper P is supported by the heating platen 53. Is configured such that the leading edge of the adhesive paper P is sandwiched at the nip point between the second feeding roller 86 and the second driven roller 87, and the adhesive paper P is conveyed to the heating platen 53 via the second conveyance path R2. Just do it.

  Here, it is needless to say that the “peeling means” is not limited to the configuration of the above embodiment, and any means can be used as long as it can peel the release paper RP from the base material FP of the adhesive paper P. May be. For example, instead of providing the peeling member 91 on the downstream side of the first feeding roller 83, the operator may manually peel the adhesive paper P from the leading end side on the downstream side of the first feeding roller 83. More specifically, the front end of the adhesive paper P is peeled off the downstream side of the first feeding roller 83, and is passed through the front end of the base material FP passed through the heating device 93 and the outer peripheral surface of the release paper transport roller 92. The leading edge of the release paper RP may be overlapped and sandwiched between the first re-adhesion roller 94 and the second re-adhesion roller 95. When this operation is performed first, the adhesive paper P is sequentially peeled on the downstream side of the first feeding roller 83 as it is conveyed in the conveyance direction YF.

  Further, the “heating means” is not limited to the configuration of the above embodiment, and any means may be used as long as it can heat the substrate FP after peeling. In addition, the “heating means” may be configured to heat the release paper RP after the release when recording is performed on the adhesive paper P that has a larger shrinkage rate when heated than the base material FP. . Alternatively, as a configuration capable of heating both the base material FP and the release paper RP after peeling, either the base material FP or the release paper RP is selectively heated according to the characteristics of the adhesive paper P or the like, Alternatively, both may be heated.

  Furthermore, it is needless to say that the “re-adhesion means” is not limited to the configuration of the above embodiment, and any means can be used as long as it can re-adhere the base material FP and the release paper RP after heating. There may be.

<Third embodiment>
A third embodiment of the inkjet printer 50 according to the present invention will be described with reference to FIGS.

FIG. 5 is a plan view of an essential part of a third embodiment of the ink jet printer 50.
The ink jet printer 50 according to the third embodiment includes the “recording execution unit”, the feeding unit, and the recording control unit 100 described with reference to FIGS. 1 and 2 and is supported by the heating platen 53. “Shrinkage rate measuring means” for measuring the shrinkage rate of the base material FP of a certain adhesive paper P is provided. Since the configurations of the “recording execution unit”, the feeding unit, and the recording control unit 100 are the same as those in the first embodiment, the description thereof is omitted.

  In this embodiment, a sensor 66 is mounted on the carriage 61 in addition to the recording head 62. The sensor 66 is a reflective optical sensor, and is a sensor that can detect the test pattern TP recorded on the base material FP of the adhesive paper P in a non-contact manner. By reciprocating the carriage 61 in the main scanning direction X and the sub-scanning direction Y, the recording surface of the base material FP on the heating platen 53 can be scanned and detected by the sensor 66. The test pattern TP is recorded on the recording surface of the substrate FP by ejecting ink from the recording head 62 to form ink dots.

  The recording control unit 100 sets the shrinkage rate of the base material FP of the adhesive paper P in the following procedure before executing recording on the base material FP in a state where the adhesive paper P is conveyed on the heating platen 53. taking measurement. Hereinafter, a description will be given with reference to FIG.

FIG. 6 is a plan view schematically showing a procedure for recording the test pattern TP on the base material FP.
When the adhesive paper P is conveyed onto the heating platen 53, the adhesive paper P is heated at the temperature of the heating platen 53 and gradually contracts from that point. When the adhesive paper P is conveyed onto the heating platen 53, the recording control unit 100 first records the test pattern TP1 at a predetermined position on the substrate FP (FIG. 6A). Subsequently, when a certain time has passed, control is performed to record the test pattern TP2 having the same shape as the test pattern TP1 at the same recording execution position as the recording execution position of the test pattern TP1. At this time, since a certain time has passed since the test pattern TP1 was recorded until the test pattern TP2 was recorded, the substrate FP is contracted by being heated on the heating platen 53. In such a case, a deviation occurs between the recording position of the test pattern TP1 and the recording position of the test pattern TP2 on the base FP by the contracted amount (FIG. 6B). Thereafter, the test pattern TP3 and the test pattern TP4 are recorded on the base material FP at regular time intervals by the same procedure (FIGS. 6C and 6D).

  Subsequently, the portion where the test patterns TP1 to TP4 of the base material FP are recorded is scanned by the sensor 66, and the pattern intervals of the test patterns TP1 to TP4 are detected. From the detected pattern intervals of the test patterns TP1 to TP4 and the dimensions of the adhesive paper P, the correlation between the shrinkage rate of the base material FP at the heating temperature of the heating platen 53, and the correlation between the heating time and the shrinkage rate of the base material FP. It becomes possible to measure the relationship (shrinkage rate measuring means). At this time, considering that the shrinkage rate of the base material FP may be different between the main scanning direction X and the sub-scanning direction Y, the shapes of the test patterns TP1 to TP4 are substantially parallel to the main scanning direction X. The sensor 66 has a shape including a line substantially parallel to the sub-scanning direction Y (for example, an L shape as shown in the figure), and both the interval (deviation amount) in the main scanning direction X and the interval (deviation amount) in the sub-scanning direction Y are detected by the sensor 66. It is preferable to detect and measure the contraction rate in both directions.

  Needless to say, the test pattern TP only needs to record at least two test patterns (for example, test patterns TP1 and TP2) in measuring the shrinkage rate of the base material FP. In order to more accurately specify the correlation with the shrinkage rate of the base material FP, the number of test patterns is preferably as large as possible. In addition, the time between each test pattern can be arbitrarily set, and the general base material FP is set in consideration of the point that the contraction hardly occurs after heating for about 10 to 20 seconds. Good. The test patterns TP1 to TP4 may be recorded at regular intervals, for example, around 1 to 2 seconds.

  Then, the recording control unit 100 changes the recording control for the adhesive paper P based on the measured shrinkage rate of the base material FP of the adhesive paper P. As a result, it becomes possible to execute appropriate recording control according to the shrinkage rate of the base material FP when supported by the heating platen 53. Therefore, the recording accuracy is caused by the shrinkage of the base material FP of the adhesive paper P. It is possible to reduce the risk of the decrease.

  For example, depending on whether or not the shrinkage rate of the base material FP measured from the test pattern TP is within an allowable range, it is possible to select whether or not to perform recording on the adhesive paper P. The criterion for determining whether or not the image quality is within the allowable range is determined by estimating the degree of decrease in the recorded image quality due to the contraction of the base material FP from the measured shrinkage rate of the base material FP and determining whether or not the decrease in the recorded image quality is within the allowable range. It ’s fine.

  Further, for example, the ink ejection timing is adjusted according to the shrinkage rate of the base material FP measured from the test pattern TP so that the ink ejected from the recording head 62 is landed on the base material FP at a position where it should originally land. Can do. More specifically, from the measured shrinkage of the base material FP, the distance between the head surface of the recording head 62 and the recording surface of the base material FP, the moving speed of the recording head 62 in the main scanning direction X, and the like. The amount of deviation of the ink landing position with respect to the ink is estimated, and the ink ejection timing with respect to the movement position of the recording head 62 in the main scanning direction X may be adjusted based on the estimated amount of deviation.

  Further, for example, relative to the base material FP according to the contraction rate of the base material FP measured from the test pattern TP so that the ink ejected from the recording head 62 is landed at a position where the ink should land on the base material FP. The ink ejection position can be adjusted. More specifically, based on the predicted shrinkage rate of the base material FP, the distance between the head surface of the recording head 62 and the recording surface of the base material FP, the moving speed of the recording head 62 in the main scanning direction X, and the like. The amount of deviation of the ink landing position with respect to is estimated. Then, the scanning position in the sub-scanning direction Y of the recording head 62 may be adjusted based on the estimated shift amount. Alternatively, the used nozzle pattern of the recording head 62 may be changed based on the estimated deviation amount and the nozzle pitch of the recording head 62. The change of the used nozzle pattern is, for example, shifting the ink ejecting nozzle used when forming a certain dot to another ink ejecting nozzle adjacent to the originally designated ink ejecting nozzle.

<Fourth embodiment>
A fourth embodiment of the inkjet printer 50 according to the present invention will be described with reference to FIG.

FIG. 7 is a side view of an essential part of a fourth embodiment of the ink jet printer 50.
The ink jet printer 50 of the fourth embodiment is further provided with a moisture measuring device 77 and a heating device 96 in addition to the second embodiment. Since the other configuration is the same as that of the second embodiment, the description of the common parts is omitted.

  The moisture measuring device 77 is disposed between the first driven guide roller 82 and the second driven guide roller 85 and the adhesive paper support shaft 81. The moisture measuring device 77 is a device for measuring the moisture content of the release paper RP of the adhesive paper P supported by the adhesive paper support shaft 81, and the moisture measuring device 76 for measuring the moisture content of the substrate FP. Are the same components. Hereinafter, the moisture measuring device 76 for measuring the moisture content of the substrate FP is referred to as “first moisture measuring device 76”, and the moisture measuring device 77 for measuring the moisture content of the release paper RP is referred to as “second moisture measurement”. Device 77 ".

  The heating device 96 is disposed on the downstream side of the first feeding roller 83 and is a device that heats the release paper RP to a predetermined temperature by making surface contact with the release paper RP after being peeled off by the release member 91. . Similar to the heating device 93 for heating the peeled substrate FP to a predetermined temperature, the heating device 96 includes a heater, a thermistor, a heater control circuit, etc. (not shown). The recording control unit 100 controls the heater control circuit based on the output signal of the thermistor. As a result, the temperature of the portion of the heating device 96 that contacts the release paper RP is maintained at a predetermined temperature. Hereinafter, the heating device 93 for heating the peeled substrate FP to a predetermined temperature is referred to as a “first heating device 93”, and the heating device for heating the release paper RP after being peeled to a predetermined temperature. 96 is referred to as a “second heating device 96”.

  In the ink jet printer 50 according to the fourth embodiment having such a configuration, before performing recording on the adhesive paper P, the moisture content of the base material FP of the adhesive paper P supported by the adhesive paper support shaft 81 is set to the first. The moisture content is measured by the moisture measuring device 76, the moisture content of the release paper RP is measured by the second moisture measuring device 77, and either the first transport path R1 or the second transport path R2 is determined according to the measured moisture content. The operator can select whether the adhesive paper P is conveyed to the heating platen 53 via the route.

  More specifically, the shrinkage rate of the base material FP is predicted from the measured moisture content of the base material FP, and the shrinkage rate of the release paper RP is predicted from the measured moisture content of the release paper RP. Further, from the predicted shrinkage rate of the base material FP and the predicted shrinkage rate of the release paper RP, the magnitude of the warp and the mode of warp (convex warpage) that occurs when the adhesive paper P is supported on the heating platen 53. Predict the concave curvature). Then, when the shrinkage rate of the base material FP of the adhesive paper P is predicted to exceed the allowable range, or when the adhesive paper P is supported by the heating platen 53, the magnitude and warpage of the adhesive paper P that occur. If it is predicted that there is a high possibility of head rubbing from this aspect, the leading edge of the adhesive paper P is held at the nip point between the first feeding roller 83 and the first driven roller 84, and the first transport path R1. The adhesive paper P may be conveyed to the heating platen 53 via the “recording pre-processing means”. As a result, it is possible to reduce the possibility that the recording accuracy is reduced due to the shrinkage of the adhesive paper P, and it is also possible to reduce the possibility that the head is rubbed due to the warp of the adhesive paper P. On the other hand, if the shrinkage rate of the base material FP is predicted not to exceed the allowable range, or if the pressure-sensitive adhesive paper P is supported by the heating platen 53, the amount of warpage of the pressure-sensitive adhesive paper P and the warp of the head are rubbed. When it is predicted that there is a low possibility of occurrence of an adhesive, the tip of the adhesive paper P is held at the nip point between the second feeding roller 86 and the second driven roller 87, and the adhesive is adhered via the second conveyance path R2. The paper P may be conveyed to the heating platen 53.

  The heating temperature in the first heating device 93, the heating temperature in the second heating device 96, the heating time in the first heating device 93 and the second heating device 96, and the like can be appropriately set based on various conditions. For example, the type (material, structure, etc.) of the base material FP of the adhesive paper P, the type (material, structure, etc.) of the release paper RP of the adhesive paper P, the moisture content of the base material FP measured by the first moisture measuring device 76, What is necessary is just to set suitably based on the moisture content of the release paper RP measured with the 2nd moisture measuring device 77. FIG. More specifically, in the process of being conveyed while being heated by the first heating device 93 or the second heating device 96, the moisture content of the base material FP and the moisture content of the release paper RP (hereinafter, “ It should be set to be “target moisture content”.

  The target moisture content may be set for each type of the base material FP or the release paper RP according to the moisture absorption / desorption characteristics that vary depending on the type of the base material FP or the release paper RP, the surface roughness (surface irregularities), and the like. . For example, for the base material FP and the release paper RP that have a relatively high rate of evaporation of moisture by heating, it is preferable to set the target moisture content lower. On the other hand, the target moisture content may be set higher for the base material FP and the release paper RP that have a relatively slow rate of evaporation of moisture by heating. As a specific example, Kraft paper may be set to 2 to 3% or less, high quality paper to 4% or less, coated paper such as glossy paper to 5 to 6% or less, and cast paper to 5 to 7% or less.

  More specifically, for example, in the inkjet printer 50, an experiment is performed in advance for recording on the adhesive paper P while changing the heating temperature in the first heating device 93 and the heating temperature in the second heating device 96. And while measuring the moisture content of base material FP after passing the 1st heating device 93, and the moisture content of release paper RP after passing the 2nd heating device 96, respectively, after they were reattached When the adhesive paper P passes through the heating platen 53, the size of the main warp or the like is confirmed. And what is necessary is just to set the moisture content of the base material FP and the release paper RP when the magnitude | size etc. of curvature become in an allowable range as a target moisture content. If this experiment is performed for each type of base material FP or release paper RP, the target moisture content can be determined for each type of base material FP or release paper RP.

  Further, when the release paper RP of the adhesive paper P is a film paper, glassine paper, or the like made of PET or the like, the release paper RP hardly contracts due to heating. The shape warp is likely to occur. In many cases, the pressure-sensitive adhesive paper P having the concave warpage is not easy to prevent the heating platen 53 from being lifted (such as providing a suction hole in the pressure-sensitive adhesive paper support surface of the heating platen 53). Therefore, in the case of such an adhesive paper P, it is preferable to set the target moisture content of the base material FP to be lower so that concave warpage does not occur as much as possible. On the other hand, when the release paper RP of the adhesive paper P is kraft paper or the like, since the kraft paper has a relatively high rate of evaporation of moisture by heating, the convex warpage of the adhesive paper P due to the shrinkage of the release paper RP. Is likely to occur. In many cases, the adhesive sheet P in which the convex warpage has occurred is relatively easy to prevent the heating platen 53 from being lifted. Therefore, in the case of such an adhesive paper P, the target moisture content of the release paper RP may be set relatively high.

  Furthermore, as a modification of the fourth embodiment, a humidity control device for adjusting the moisture content of the release paper RP after being peeled may be provided in place of the second heating device 96.

<Fifth embodiment>
A fifth embodiment of the inkjet printer 50 according to the present invention will be described with reference to FIG.

FIG. 8 is a side view of an essential part of the fifth embodiment of the inkjet printer 50.
The ink jet printer 50 of the fifth embodiment has a moisture measuring device 76 for measuring the moisture content of the release paper RP of the adhesive paper P before being supported by the heating platen 53, and an adhesive before being supported by the heating platen 53. A humidity control device 75 for adjusting the moisture content of the release paper RP of the paper P is provided. That is, in the inkjet printer 50 of the fifth embodiment, the positions of the humidity control device 75 and the moisture measuring device 76 are different from those of the first embodiment. Since the other configuration is the same as that of the first embodiment, a description of common parts is omitted.

  The recording control unit 100 changes the recording control for the adhesive paper P based on the moisture content of the release paper RP of the adhesive paper P measured by the moisture measuring device 76. As a result, it is possible to execute appropriate recording control in accordance with the shrinkage rate of the release paper RP when supported by the heating platen 53. Therefore, the recording accuracy is caused by the shrinkage of the release paper RP of the adhesive paper P. It is possible to reduce the risk of the decrease. The recording control unit 100 controls the humidity control device 75 based on the moisture content of the release paper RP of the adhesive paper P measured by the moisture measuring device 76. Thereby, the moisture content of the release paper RP of the adhesive paper P can be adjusted before recording. Since the shrinkage of the release paper RP when supported by the heating platen 53 can be suppressed within an allowable range, it is possible to reduce the possibility that the recording accuracy is lowered due to the shrinkage of the release paper RP. it can. For example, in order to reduce the shrinkage rate of the release paper RP generated when the adhesive paper P is supported by the heating platen 53, the release paper RP may be preheated and contracted by the humidity control device 75. Alternatively, in consideration of the time for which the adhesive paper P is supported on the heating platen 53 to such an extent that the release paper RP hardly contracts when the adhesive paper P is supported on the heating platen 53, the humidity control device 75 The release paper RP may be sufficiently humidified in advance.

<Sixth embodiment>
A sixth embodiment of the inkjet printer 50 according to the present invention will be described with reference to FIG.

FIG. 9 is a side view of an essential part of a sixth embodiment of the inkjet printer 50.
In the sixth embodiment, in addition to any one of the first to fifth embodiments described above, an adhesive paper winding means for winding the adhesive paper P after recording into a roll shape, and before winding it into a roll shape The inkjet printer 50 further includes a post-recording processing unit that performs a predetermined process on the adhesive paper P after recording. Descriptions of parts common to the first to fifth embodiments are omitted.

  The adhesive paper winding means includes discharge driving rollers 101 and 103, discharge driven rollers 102 and 104, driven guide roller 105, and adhesive paper winding shaft 106.

  The discharge driving rollers 101 and 103 are rollers for conveying the adhesive sheet P after execution of recording discharged from the “recording execution unit” to the adhesive sheet take-up shaft 106, and transmit a rotational driving force of a motor (not shown). Has been rotated. The discharge driven rollers 102 and 104 are rollers for bringing the adhesive paper P into contact with the outer peripheral surfaces of the discharge driving rollers 101 and 103, and are rotatably supported. The driven guide roller 105 is a roller for guiding the adhesive paper P after recording to the adhesive paper take-up shaft 106, and is rotatably supported. The adhesive paper take-up shaft 106 is an axis on which the adhesive paper P after recording is wound in a roll shape.

  The post-recording processing means includes a post-recording drying device 107, a post-recording humidity control device 108, and a post-recording moisture measuring device 109.

  The post-recording drying device 107 is disposed on the downstream side of the “recording execution means”, and jets warm air onto the base material FP of the adhesive paper P after the recording is performed, so that ink on the recording surface of the base material FP is ejected. It is a device for drying. The post-recording humidity control apparatus 108 is disposed on the downstream side of the post-recording drying apparatus 107, and is an apparatus that adjusts the moisture content of the adhesive paper P after the recording is performed before winding it into a roll. The post-recording moisture measuring device 109 is disposed on the downstream side of the post-recording humidity control device 108, and is a device for measuring the moisture content of the adhesive paper P after the recording is performed before winding it into a roll.

  After the recording is performed, the adhesive paper P is first sprayed with warm air from the post-recording drying device 107 onto the base material FP, so that the solvent (hydrophilic oil or the like) contained in the ink on the recording surface of the base material FP. The ink on the recording surface of the substrate FP can be completely dried by vaporization. Subsequently, the moisture content of the adhesive paper P after recording is adjusted by the post-recording humidity control device 108 before being wound around the adhesive paper take-up shaft 106. Specifically, the post-recording humidity control device 108 supplies water to the adhesive paper P in an amount corresponding to the water lost from the adhesive paper P due to heating by the heating platen 53 and drying by the post-recording drying device 107. For example, the recording is performed so that the moisture content measured by the moisture measuring device 109 after recording is substantially the same as the moisture content of the adhesive paper P measured before the recording (the moisture content of the adhesive paper P at normal temperature and normal humidity). The post-humidity control device 108 may be controlled. As a result, the moisture content of the adhesive paper P can be returned to the state before the recording is performed, and therefore, the possibility that the adhesive paper P wound around the adhesive paper take-up shaft 106 is unwound or the like can be reduced.

<Other embodiments>
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  For example, in the inkjet printer 50 of the third embodiment described above, the humidity control device 75 described in the first embodiment may be further provided between the feeding unit and the “recording execution unit”. The recording control unit 100 controls the humidity control device 75 based on the shrinkage rate of the base material FP measured from the test pattern TP, so that the moisture content of the base material FP of the adhesive paper P can be adjusted before recording. . Accordingly, the shrinkage of the base material FP when supported by the heating platen 53 can be suppressed and the shrinkage rate can be reduced within an allowable range, so that the recording accuracy is lowered due to the shrinkage of the base material FP. It is possible to reduce the risk of doing so.

  For example, in the inkjet printer 50 of the third embodiment described above, the temperature adjustment device 531 described in the first embodiment may be further provided. By adjusting the temperature of the heating platen 53 based on the shrinkage rate of the base material FP measured from the test pattern TP, the shrinkage of the base material FP when supported by the heating platen 53 can be suppressed within an allowable range. become. As a result, it is possible to reduce the possibility that the recording accuracy is reduced due to the shrinkage of the base material FP.

  For example, in the inkjet printer 50 of the third embodiment described above, both the humidity control device 75 and the temperature adjustment device 531 described in the first embodiment may be provided.

  In the first to sixth embodiments, the ink jet printer 50 using water-based ink has been described as an example. However, the present invention can be applied to all recording apparatuses including a heating platen. For example, it is needless to say that the present invention can be carried out also in an ink jet printer using a hot-melt solid ink, and the effects of the present invention can be obtained. As a recording apparatus capable of implementing the present invention, for example, in addition to the ink jet printer 50 having the configuration described in the first to sixth embodiments, for example, a recording material is moved in the sub-scanning direction Y. And a recording device such as a serial head type ink jet printer that performs head scanning in the sub-scanning direction Y, and a known line head type ink jet printer.

50 Inkjet Printer, 51 First Conveyance Drive Roller, 52 First Conveyance Driven Roller, 53 Heating Platen, 54 Second Conveyance Drive Roller, 55 Second Conveyance Driven Roller, 61 Carriage, 62 Recording Head, 64 Y-Directional Movable Unit, 66 Sensor, 71 Adhesive paper support shaft, 72 Followed guide roller, 73 Feeding roller, 74 Followed roller, 75 Humidity control device, 76 Moisture measuring device, 91 Peeling member, 92 Peeling paper transport roller, 93 Heating device, 94 First re Adhesion roller, 95 Second re-adhesion roller, 100 Recording control unit, 101, 103 Ejection drive roller, 102, 104 Ejection driven roller, 105 Followed guide roller, 106 Adhesive paper take-up shaft, 107 Post-recording drying device, 108 Post-recording adjustment Wet device, 109 post-recording moisture measuring device, 531 temperature control device, P adhesive paper, FP substrate, RP Hanareshi, X main scanning direction, Y sub-scanning direction, YF conveying direction

Claims (6)

Recording execution means for performing recording by ejecting ink from a recording head onto a recording material supported by a heating platen;
In a recording apparatus comprising a control device for controlling the recording execution means,
A moisture measuring device for measuring the moisture content of the recording material before being supported by the heating platen;
The recording apparatus, wherein the control device changes recording control for the recording material based on a moisture content of the recording material measured by the moisture measuring device.   The recording apparatus according to claim 1, wherein the control device predicts a shrinkage rate of the recording material when supported by the heating platen from a moisture content of the recording material measured by the moisture measuring device, and predicts A recording apparatus that selects whether to execute recording on the recording material or to stop recording based on the contraction rate of the recording material. The recording apparatus according to claim 1, further comprising a temperature adjusting device that adjusts a temperature of the heating platen,
The recording apparatus, wherein the control device adjusts the temperature of the heating platen based on a moisture content of the recording material measured by the moisture measuring device.   4. The recording apparatus according to claim 1, wherein the control device is configured to control the recording material when supported by the heating platen from the moisture content of the recording material measured by the moisture measuring device. Ink ejection to the recording material is predicted so that the ink ejected from the recording head is landed at a position where the recording material is supposed to land based on the predicted shrinkage rate of the recording material. A recording apparatus characterized by adjusting timing.   5. The recording apparatus according to claim 1, wherein the controller is configured to control the recording material when the recording material is supported by the heating platen based on the moisture content of the recording material measured by the moisture measuring device. The shrinkage rate is predicted, and based on the predicted shrinkage rate of the recording material, relative to the recording material, the ink ejected from the recording head is landed at the position where the recording material is supposed to land. A recording apparatus characterized by adjusting a proper ink ejection position. The recording apparatus according to claim 1, wherein the control device is configured to record the recording material based on a moisture content of the recording material measured by the moisture measuring device and a type of the recording material. A recording apparatus, wherein the recording control is changed.

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