JP2010006009A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording apparatus capable of stabilizing colorimetric accuracy by a colorimeter.
A recording apparatus 1 includes a recording head 24 that performs recording on a recording medium (P), a carriage 21 that moves in a width direction X of the recording medium (P), and a carriage 21 A colorimeter 30 provided to measure a color recorded on the recording medium (P), a medium support section (40) facing the recording head 24 and supporting the recording medium (P), and the medium A back side colorimetric reference part (42) of a reference color when measuring a color, which is provided on the support part (40) and arranged on the back side when the recording surface of the recording medium (P) is the front side; The recording medium (P) is sucked by the negative pressure generated by the suction means (49) provided on the upstream side and the downstream side in the recording medium feeding direction of the back surface color measurement reference section (42) in the medium support section (40). Upstream suction section (43a, 44a) and downstream suction And a pulling portion (45a).
[Selection] Figure 5

Description

The present invention has a recording head that performs recording on a recording medium, a carriage that moves in the width direction of the recording medium, and a measurement that is provided on the carriage and measures a color recorded on the recording medium. A back side when the recording surface of the recording medium is a front surface when the color is measured, and a medium support portion that faces the recording head and supports the recording medium, and is provided on the medium supporting portion and measures the color And a suction hole for sucking a recording medium by a negative pressure generated by a suction means.
In the present application, the recording apparatus includes types such as an ink jet printer, a wire dot printer, a laser printer, a line printer, a copying machine, and a facsimile.

  Conventionally, as shown in Patent Document 1, a recording apparatus has a carriage, a colorimeter, a platen as a medium support portion, and a fan as a suction unit. Among these, the carriage has a recording head and is provided so as to move in the width direction of roll paper which is an example of a recording medium. The colorimeter is provided on the carriage so as to be able to measure the color of the colorimetric pattern recorded on the roll paper.

Further, the platen is provided so as to face the recording head and support the sheet from below. In addition, the fan is provided below the inside of the platen, and is configured to suck outside air from a suction port provided in the platen. Accordingly, the conveyed roll paper could be adsorbed on the platen. As a result, the roll paper could be flattened and the recording accuracy could be maintained with high accuracy.
JP 2007-106069 A

However, the suction port is disposed only on the downstream side, which is one side of the colorimeter, in the transport direction. Therefore, when color measurement is performed, there is a risk that the upstream roll paper, which is the other side of the colorimeter, will float from the platen. That is, the countermeasure for lifting when color measurement is executed is insufficient.
Here, “lifting” means that the sheet is separated from the platen and lifts to the recording head side due to winding or deformation of the sheet. In particular, a large paper or roll paper tends to be lifted.

  And a clearance gap arises between roll paper and the said platen, and there exists a possibility that light may enter into this clearance gap. In such a case, there is a risk that the colorimetric accuracy may become unstable when performing colorimetry. Specifically, when light enters the gap, the brightness (brightness) of the color of the color pattern recorded on the roll paper becomes brighter. That is, there is a possibility that the colorimeter may recognize the color brighter than the actual color when the gap is not generated. In other words, it is not sufficient to flatten the roll paper when performing color measurement.

  The present invention has been made in view of such a situation, and an object thereof is to provide a recording apparatus capable of stabilizing colorimetric accuracy by a colorimeter.

  In order to achieve the above object, a recording apparatus according to a first aspect of the present invention includes a carriage having a recording head that performs recording on a recording medium, the carriage moving in the width direction of the recording medium, and the carriage. A colorimeter that measures the color recorded on the recording medium, a medium support that faces the recording head and supports the recording medium, and is provided on the medium support and records on the recording medium The back side colorimetric reference part of the reference color when measuring the color, and the upstream side and the downstream side of the recording medium feeding direction of the back side colorimetric reference part in the medium support part. And an upstream suction section and a downstream suction section that suction the recording medium by a negative pressure generated by the suction means.

  According to the first aspect of the present invention, the recording apparatus is provided on the upstream side and the downstream side in the recording medium feeding direction of the back surface color measurement reference unit in the medium support unit, and is generated by the negative pressure generated by the suction unit. An upstream suction section and a downstream suction section for sucking the recording medium are provided. That is, the recording medium is sucked on both the upstream side and the downstream side of the back surface color measurement reference portion. Therefore, at the time of color measurement execution, the recording medium can be adsorbed so as not to float from the back color measurement reference portion. That is, it is possible to reliably prevent a gap from being generated between the recording medium and the back surface colorimetric reference portion. As a result, the color recorded on the recording medium can be accurately measured. That is, there is no possibility that a gap is formed between the back surface colorimetric reference part and the color measurement result becomes unstable due to light entering the gap.

Further, the recording apparatus can be reduced in size by providing the colorimeter in the carriage and providing the back color measurement reference portion in the medium support portion.
Furthermore, when recording is performed, the recording medium wound in a roll shape is lifted from the medium support portion by the winding curl of the roll, and measurement is performed by using suction means provided to prevent the so-called lifting phenomenon. There is no need to provide a dedicated pressing member for color execution.

  According to a second aspect of the present invention, in the first aspect, in the feeding direction of the recording medium, the back surface measurement on the same surface as the first supporting surface in contact with the recording medium in the medium support unit when performing color measurement. In contact with the recording medium at a position downstream of the color reference portion and retracted from the surface of the back color measurement reference portion to the opposite side of the recording head in the direction in which the recording head and the medium support portion face each other. A possible second support surface is provided.

According to the 2nd aspect of this invention, in addition to the effect similar to a 1st aspect, the said 2nd support surface is provided.
For example, when the recording medium is wound in a roll shape, the leading end portion of the recording medium is sent along the medium support portion to the downstream side in the feeding direction. At this time, the vicinity of the rear side of the leading end of the recording medium tends to be lifted so as to swell due to the curl. When measuring the color recorded in the vicinity of the rear side, the vicinity of the rear side tends to be easily lifted from the back color measurement reference portion.
Therefore, by sending the tip portion downstream so as to escape along the second support surface retracted from the first support surface, the rear vicinity can be made difficult to float from the back colorimetric reference portion. it can. As a result, the color can be measured with higher accuracy. This is particularly effective when the recording medium is wound into a roll.

  According to a third aspect of the present invention, in the first or second aspect, the upstream suction portion and the downstream suction portion are arranged in the first suction hole row and the second suction from the upstream side in the recording medium feeding direction. An ink receiving portion for receiving ink ejected from the recording head is disposed between the first suction hole array and the second suction hole array. The back surface colorimetric reference portion is disposed between the second suction hole row and the third suction hole row, and receives a control signal during recording to receive the first suction hole row and the second suction hole row. The recording medium is sucked only by the suction hole row, and when performing color measurement, the recording medium is switched to suck at least the second suction hole row and the third suction hole row in response to the control signal. It is characterized by that.

  According to the third aspect of the present invention, in addition to the same effects as the first or second aspect, only the first suction hole row and the second suction hole row are received upon receipt of a control signal during recording. When the color measurement is executed, the recording medium is sucked by the switching operation so that the recording medium is sucked by at least the second suction hole row and the third suction hole row in response to the control signal. Therefore, when recording is performed, the portion of the recording medium facing the recording head can be sucked firmly to prevent the floating.

Further, the third suction hole row is configured not to act. Therefore, compared with the time when color measurement is performed, the range in which the recording medium is attracted to the medium support portion can be reduced. As a result, the frictional resistance generated between the recording medium and the medium support portion can be reduced. That is, there is no possibility that the recording medium is prevented from being sent downstream.
On the other hand, when performing color measurement, the recording medium can be sucked and firmly adsorbed to the medium support portion. As a result, it is possible to reliably prevent the portion on the back surface color measurement reference portion on the recording medium from being lifted.
That is, the suction state suitable for the application can be obtained.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the back surface color measurement reference portion can be displaced in a direction in which the recording head and the medium support portion face each other by a displacement mechanism. When the color measurement is performed, the back surface color measurement reference unit receives a control signal and is displaced to a first position that is on the same surface as the first support surface that contacts the recording medium in the medium support unit. When the recording is performed, the back surface color measurement reference unit receives the control signal and is switched so as to be displaced from the first support surface to the second position retracted to the opposite side of the recording head. Features.

According to the fourth aspect of the present invention, in addition to the same effects as in any one of the first to third aspects, at the time of color measurement execution, the back surface color measurement reference unit receives the control signal and receives the control signal. The back side colorimetric reference unit receives a control signal and receives the control signal when the recording is executed. The back side colorimetric reference unit is displaced to a first position that is on the same plane as the first support surface that contacts the recording medium. It is configured to switch so as to be displaced to a second position retracted from the surface to the opposite side of the recording head. Therefore, it is possible to reliably prevent a gap from being generated between the recording medium and the back surface color measurement reference portion when performing color measurement.
On the other hand, when recording is performed, a gap is generated between the recording medium and the back surface color measurement reference portion, so that scratches and dirt due to friction can be prevented from occurring in the back surface color measurement reference portion. As a result, it is possible to stabilize the color measurement accuracy when performing color measurement.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view showing the inside of the recording apparatus according to the present invention.
As shown in FIG. 1, the recording apparatus 1 according to the present invention includes a transport unit 10, a recording unit 20, and a discharge unit 60. Among these, the transport unit 10 is configured to transport the paper P to the recording unit 20. Specifically, the transport unit 10 includes a transport roller pair 11 and a driven roller holder 14 described later. Further, the transport roller pair 11 includes a transport drive roller 12 that is driven by the power of a transport motor (not shown), and a transport driven roller 13 that is rotatably held by a driven roller holder 14.

  The recording unit 20 is configured to perform recording on the conveyed paper P. Specifically, the recording unit 20 includes a carriage 21, a recording head 24, a guide shaft 22, a guide rail unit 23, a main platen 40, and a sub platen 50. Among these, the carriage 21 has a recording head 24 and is provided so as to be moved in the width direction X of the paper P by the power of the carriage motor 26. Specifically, the power of the carriage motor 26 is transmitted to the carriage 21 by a carriage belt (not shown) so that the carriage 21 moves.

  The recording head 24 is configured to perform recording by ejecting ink onto the paper P from a nozzle opening row 25 (see FIGS. 5 and 6) described later. Furthermore, the guide shaft 22 and the guide rail portion 23 are provided so as to guide the carriage 21 in the width direction X. The main platen 40 is disposed at a position facing the recording head 24 and is configured to support the paper P by a first paper support surface 46 (see FIGS. 5 and 6) described later. . Accordingly, the recording can be stabilized by keeping the distance between the paper P and the recording head 24 constant during recording. Further, the sub platen 50 is provided on the downstream side in the transport direction of the main platen 40, and supports the leading end side of the paper P by a second paper support surface 51 (see FIGS. 5 and 6) described later during recording. It is provided so that you can.

Further, the carriage 21 is provided with a color measuring device 30 that can measure the color of the recorded paper P. Accordingly, when recording is performed on a part of the paper P, the color can be measured. If there is a difference between the color of the measurement result and the theoretical color, the data to be recorded can be corrected and reflected in the subsequent recording.
The measurement is performed by the Lab color system which is one of CIE color systems of CIE (Commission Internationale'Eclairage (International Lighting Commission)) adopted in Japanese Industrial Standards (JIS).
Here, “Lab color system” represents brightness (Lightness) on the L axis, and the chromaticity axes are psychological four primary colors of red to green (a axis) and yellow to blue (b axis). ), And these three axes represent a system represented by a three-dimensionally orthogonal color space.

A suction fan 49, which is an example of a suction unit, is provided below the main platen 40 and the sub platen 50. When recording or color measurement is performed, the sheet P can be sucked to the main platen side via a first suction hole array 43 to a third suction hole array 45 described later so that the sheet P can be prevented from being lifted. Is provided.
Here, “lifting” means that the paper P is separated from the main platen 40 and floats to the recording head side due to winding or deformation of the paper P. In particular, in the case of a large paper P or roll paper, it tends to be lifted up easily.

Furthermore, in the transport direction Y, a white white backing portion 42 is provided at a position facing the colorimeter 30 in the main platen 40 as a reference color back surface color measurement reference portion.
Note that the back color measurement reference portion is not limited to white.
Here, the reason why the white backing portion 42 of the reference color white is used is that the paper P before recording is white. For example, if the paper P before recording is black, black is used as a reference, and therefore a black black backing portion is used. That is, the same color as the color of the paper P itself is the reference color. The reason why the same color is used is to prevent the paper P from being seen through and the back color on the back side from affecting the color measurement. Furthermore, since the color material (ink) recorded on the paper P is a subtractive color mixture, it is common to use white that does not affect the location to be measured.

  The discharge unit 60 is configured to be able to discharge the recorded paper P to a discharge stacker (not shown) provided in front of the recording apparatus 1. Specifically, the discharge unit 60 includes a discharge roller pair 61 (see FIG. 3) and a discharge roller holder 64 (see FIG. 3). Among these, the discharge roller pair 61 includes a discharge drive roller 62 driven by the power of a discharge motor (not shown), and a discharge driven roller 63 rotatably held by a discharge roller holder 64. .

  FIG. 2 is an enlarged plan view of a main part showing the inside of the recording apparatus according to the present invention. FIG. 3 is a side sectional view showing the inside of the recording apparatus according to the present invention. FIG. 4 is an enlarged perspective view showing the main platen of the recording apparatus according to the present invention. FIG. 5 is an enlarged side sectional view showing the main platen at the time of color measurement. Further, FIG. 6 is an enlarged side sectional view showing the main platen during recording.

  As shown in FIGS. 2 to 6, the main platen 40 is provided with a first suction hole row 43, a second suction hole row 44, and a third suction hole row 45 in order from the upstream side in the transport direction. Among these, the 1st suction hole row | line | column 43 is comprised by several 1st suction hole 43a ... (43). Similarly, the second suction hole row 44 includes a plurality of second suction holes 44a (44). Furthermore, the third suction hole row 45 is similarly configured by a plurality of third suction holes 45a (45).

  The main platen 40 is provided with a plurality of first suction chambers 43b, 43b ..., a plurality of second suction chambers 44b, 44b ... and a plurality of third suction chambers 45b, 45b ... in order from the upstream side in the transport direction. ing. Among these, the first suction chambers 43b, 43b... Are provided with first suction holes 43a. Then, a negative pressure is generated by the suction fan 49, and the air in the space near the first suction chamber is sucked by the negative pressure through the first suction holes 43a (43). In addition, second suction holes 44a (44) are similarly provided in the second suction chambers 44b, 44b. The air in the space near the second suction chamber is sucked through the second suction holes 44a (44). Furthermore, third suction holes 45a (45) are similarly provided in the third suction chambers 45b, 45b. The air in the space near the third suction chamber is sucked through the third suction holes 45a (45).

Further, in the main platen 40, the nozzle opening row 25 of the recording head 24 (see FIGS. 5 and 6) is provided between the first suction chambers 43b, 43b... And the second suction chambers 44b, 44b. A discarding groove 41 is provided in which the ink ejected from (1) is discarded. When recording is performed on the leading edge and the trailing edge of the paper P, the ink protruding from the leading edge and the trailing edge of the paper P is discarded into the discarding groove 41, so that there is no margin at the edge of the paper P. Borderless recording can be performed.
Incidentally, in the width direction X of the paper P, there are places where the discarding groove portions 41 are long in the transport direction Y instead of the first suction chambers 43b, 43b... And the second suction chambers 44b, 44b. (See FIG. 1). This is because marginless recording is performed on the side edge of the paper P. The position of the long portion is a position corresponding to a side edge of a predetermined paper size.

Further, in the main platen 40, a white backing portion 42 is disposed between the second suction chambers 44b, 44b... And the third suction chambers 45b, 45b. Further, the white backing unit 42 is provided at a position facing the colorimetric sensor unit 31 of the colorimeter 30.
The white backing portion 42 is provided in the entire area of the main platen 40 in the width direction X.

Furthermore, the white backing part 42 is configured to be movable in the Z-axis direction, which is the height direction, by a backing lifting mechanism 47 (see FIGS. 5 and 6) controlled by a control part (not shown). For example, the backing lifting mechanism 47 can move the white backing portion 42 in the Z-axis direction by a cam mechanism.
Of course, the backing lifting mechanism 47 is not limited to the cam mechanism. It can also be moved by a lever mechanism. Further, a dedicated motor may be provided for the power of the backing lifting mechanism 47, or a motor of another mechanism may be used via a gear train.

On the other hand, roller rollers 32, 32 are rotatably held on the colorimeter side. The roller rollers 32 are provided on the upstream side and the downstream side in the transport direction of the colorimetric sensor unit 31 and at positions facing the upstream and downstream ends of the white backing unit 42 in the transport direction. The roller rollers 32 and 32 are configured to be movable in the Z-axis direction by a roller lifting mechanism (not shown) controlled by a control unit (not shown). The roller raising / lowering mechanism may have a configuration in which the roller rollers 32 and 32 are moved in the Z-axis direction by a cam mechanism similarly to the backing raising / lowering mechanism 47. Alternatively, the roller rollers 32 and 32 may be moved by a lever mechanism.
The roller rollers 32 are arranged so as to rotate in the width direction X of the paper P. In addition, a dedicated motor may be provided for the power of the roller lifting mechanism, or a motor of another mechanism may be used via a gear wheel train.

  Further, in the vicinity of the first suction holes 43a (43) to the third suction holes 45a (45), suction switching mechanisms 48 for switching opening and closing of the holes are respectively provided. The suction switching mechanism 48 is controlled by a control unit (not shown), for example, a slide part having an opening (not shown) is slid in the X-axis or Y-axis direction, and the opening is moved to the first suction holes 43a (43) to (43). It can be set as an open state by making it oppose with the 3rd suction hole 45a ... (45). As a result, the first suction holes 43a (43) to the third suction holes 45a (45) can suck the paper P.

On the other hand, the slide portion is slid in the X-axis or Y-axis direction to a position where the opening does not face the first suction hole 43a (43) to the third suction hole 45a (45). it can. As a result, the first suction hole 43a (43) to the third suction hole 45a (45) can be switched so that a part of the sheet P is not sucked. That is, the sheet P can be switched to be sucked only by the first suction holes 43a... (43) and the second suction holes 44a.
For the power of the suction switching mechanism 48, a dedicated motor may be provided, or a motor of another mechanism may be used via a gear train.

Furthermore, the sub platen 50 is disposed downstream of the main platen 40 in the transport direction as described above. The sub platen 50 is provided to support the paper P at a position lower than the height of the first paper support surface 46 (see FIGS. 5 and 6) that contacts the paper P of the main platen 40 in the Z-axis direction. ing. That is, the second paper support surface 51 (see FIGS. 5 and 6) for supporting the paper P in the sub platen 50 is provided lower than the first paper support surface 46 of the main platen 40. In other words, the second paper support surface 51 is positioned so as to retract from the first paper support surface 46 and forms a step.
Next, the color measurement execution time and the recording execution time will be described.

[When performing color measurement]
As shown in FIG. 5, when performing color measurement, the white backing unit 42 is raised by the backing lifting mechanism 47 and stopped at the “first position” that is the same height as the first paper support surface 46. . That is, the white backing portion 42 supports the paper P together with the first paper support surface 46 of the main platen 40.
Further, the suction switching mechanism 48 controlled by a control unit (not shown) opens the first suction holes 43a (43) to the third suction holes 45a (45), and the sheet P is fed by the negative pressure by the suction fan 49. , Drawn to the white backing side. Here, the sheet P can be sucked on both the upstream side and the downstream side in the transport direction of the white backing portion 42. Accordingly, there is no possibility that a gap is generated between the paper P and the white backing portion 42. As a result, there is no possibility that light enters between the paper P and the white backing portion 42.

Furthermore, the leading edge of the paper P passes through the main platen 40 and is positioned on the second paper support surface 51 of the sub platen 50 that is lower than the first paper support surface 46 of the main platen 40.
Here, when the paper P is roll paper, the vicinity of the rear side of the paper P tends to be lifted by the curl.
Therefore, by allowing the leading end of the sheet P to escape to the second sheet supporting surface 51 that is lower than the first sheet supporting surface 46, it is possible to prevent the vicinity of the rear from the leading end of the sheet P from floating from the white backing portion 42. it can. That is, by sinking the leading edge of the paper P, it is possible to prevent the vicinity of the rear from floating from the leading edge of the paper P.

The roller rollers 32 and 32 are lowered by the roller lifting mechanism (not shown). Then, the paper P on which the color is recorded is pressed against the white backing unit 42, and the distance between the color pattern that is the measurement location of the paper P and the colorimetric sensor unit 31 of the colorimeter 30 is set to a predetermined distance. Can keep.
At this time, the carriage 21 is slightly displaced in the Z-axis direction by a slight backlash between the carriage 21 and the guide shaft 22, and the predetermined distance can be maintained.

In this state, the color pattern recorded on the paper P is sequentially measured while the carriage 21 moves in the width direction X of the paper P.
At this time, as described above, there is no gap between the paper P and the white backing portion 42, so there is no possibility of light entering between the paper P and the white backing portion 42. As a result, there is no possibility that the brightness or the like will become unstable, so that the color can be measured with high accuracy.

  Furthermore, when color measurement is performed, if a color pattern for measurement is recorded in the vicinity of the front end of the paper P, the color of the color pattern can be measured immediately after recording the color pattern. In this embodiment, the colorimetric sensor unit 31 of the colorimeter 30 is provided in the vicinity of the downstream side in the transport direction of the recording head 24. Accordingly, it is possible to execute recording on portions other than the color pattern without reversing the transport roller pair 11 and feeding the paper P backward in the transport direction.

  As a result, there is no possibility that the conveyance accuracy is lowered due to so-called backlash due to the reverse operation. Further, since the reverse operation is not required, it is possible to improve the throughput that is the number of transported sheets per unit time. Still further, after correcting the recording data of the part other than the color pattern based on the result of measuring the color of the color pattern near the leading edge of the paper P, it is possible to execute the recording of the part other than the color pattern. .

[When recording]
As shown in FIG. 6, at the time of recording, the white backing portion 42 is lowered by the backing lifting mechanism 47 and stops at the “second position” which is a position lower than the first paper support surface 46. That is, in the main platen 40, the paper P is supported only by the first paper support surface 46. On the other hand, a gap is generated between the paper P and the white backing portion 42.
Further, the first suction holes 43a (43) and the second suction holes 44a (44) are opened by the suction switching mechanism 48, and the third suction holes 45a (45) are closed. Accordingly, the paper P is drawn toward the main platen only in the vicinity of the range facing the nozzle opening row 25 of the recording head 24.

Furthermore, the roller rollers 32 and 32 are raised by the roller lifting mechanism (not shown). That is, the roller rollers 32 and 32 are retracted with respect to the paper P.
In this state, the carriage 21 is configured to execute recording on the paper P while moving in the width direction X of the paper P.
At this time, as described above, there is a gap between the paper P and the white backing portion 42. Therefore, the surface of the white backing portion 42 is not damaged by friction with the paper P. As a result, there is no possibility that the measurement accuracy is lowered during the color measurement.

  Further, as described above, the paper P is drawn toward the main platen only in the vicinity of the range facing the nozzle opening row 25 of the recording head 24. That is, the range of the paper P that is drawn toward the main platen side can be minimized. Therefore, the frictional resistance generated between the main platen 40 and the paper P can be minimized. As a result, there is no possibility of disturbing the conveyance of the paper P.

When the third suction holes 45a (45) are closed by the suction switching mechanism 48, the suction amounts of the first suction holes 43a (43) and the second suction holes 44a (44) in the open state are changed. In order to prevent the increase, the air may be switched so as to be able to be sucked from a separately provided hole in the closed state.
Furthermore, as described above, the roller rollers 32 and 32 are in a state of being retracted relative to the paper P. Therefore, there is no possibility that the roller rollers 32 and 32 prevent the carriage 21 from moving in the width direction X of the paper P. That is, the carriage 21 can move smoothly by the guide shaft 22 without being affected by the uneven shape of the surface of the white backing portion 42. Further, the roller rollers 32 and 32 are configured to be rotatable only in the X-axis direction, and are not separated from the paper P, thereby preventing the paper P from being transported in the transport direction Y.

  The recording apparatus 1 of the present embodiment includes a recording head 24 that performs recording on a sheet P that is an example of a recording medium, and is provided on the carriage 21 and a carriage 21 that moves in the width direction X of the sheet P. The color measuring device 30 for measuring the color recorded on the paper P, the main platen 40 as a medium support unit that faces the recording head 24 and supports the paper P, and the recording on the paper P are provided on the main platen 40. This is the sheet feeding direction of the white backing portion 42 which is an example of the back surface color measurement reference portion of the reference color when measuring the color, and the white backing portion 42 in the main platen 40 which is arranged on the back surface side when the surface is the front surface. First suction holes 43a serving as upstream suction portions provided on the upstream and downstream sides in the transport direction and sucking the paper P by the negative pressure generated by the suction fan 49 serving as suction means (4) , Characterized in that it comprises 43 b) and the second suction holes 44a ... and (44,44b) and the third suction hole 45a of the downstream-side suction unit ... (45,45b), a.

  Further, in the present embodiment, in the transport direction Y of the paper P, from the white backing portion 42 on the same surface as the first paper support surface 46 as the first support surface that contacts the paper P in the main platen 40 at the time of color measurement. In the height direction Z, which is the downstream side and the direction in which the recording head 24 and the main platen 40 face each other, the sheet P can be contacted at a position retracted from the surface of the white backing portion 42 to the opposite side of the recording head 24. A second sheet support surface 51 of the sub-platen 50 as a second support surface is provided.

  Furthermore, in the present embodiment, the upstream suction portion and the downstream suction portion are arranged in the transport direction Y of the paper P from the upstream side with respect to the first suction hole row 43, the second suction hole row 44, and the third suction hole. A discarding groove 41 serving as an ink receiving portion for receiving ink ejected from the recording head 24 is disposed between the first suction hole row 43 and the second suction hole row 44. A white backing portion 42 is disposed between the suction hole row 44 and the third suction hole row 45, and only the first suction hole row 43 and the second suction hole row 44 are received upon receipt of a control signal during recording. In this case, the sheet P is sucked by the above-described configuration, and when color measurement is executed, the sheet P is switched to be sucked by at least the second suction hole row 44 and the third suction hole row 45 in response to a control signal.

  In the present embodiment, the white backing portion 42 is provided so as to be displaceable in the height direction Z, which is the direction in which the recording head 24 and the main platen 40 face each other, by a backing lifting mechanism 47 as a displacement mechanism. At the time of execution, the white backing unit 42 is displaced to a “first position” (see FIG. 5) that is on the same plane as the first sheet support surface 46 that contacts the sheet P in the main platen 40 in response to the control signal. When the recording is performed, the white backing unit 42 is switched so as to be displaced to the “second position” (see FIG. 6) retracted from the first sheet support surface 46 to the opposite side of the recording head 24 in response to the control signal. It is the structure.

  The present invention is not limited to the above-described embodiments, and various modifications can be made 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.

1 is an overall perspective view showing the inside of a recording apparatus according to the present invention. FIG. 3 is an enlarged plan view of a main part showing the inside of the recording apparatus according to the present invention. FIG. 3 is a side sectional view showing the inside of the recording apparatus according to the invention. FIG. 3 is an enlarged perspective view showing a platen of the recording apparatus according to the invention. FIG. 3 is an enlarged side cross-sectional view showing the platen of the recording apparatus according to the present invention (when color measurement is performed). FIG. 3 is an enlarged side sectional view showing a platen of the recording apparatus according to the present invention (when recording is performed).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recording device, 10 conveyance part, 11 conveyance roller pair, 12 conveyance drive roller,
13 Conveyance driven roller, 14 Driven roller holder, 20 Recording unit, 21 Carriage,
22 guide shafts, 23 guide rail portions, 24 recording heads, 25 nozzle opening rows,
26 Carriage motor, 30 Colorimeter, 31 Colorimetric sensor, 32 Roller,
40 main platen, 41 discarding groove, 42 white backing,
43 first suction hole row, 43a first suction hole, 43b first suction chamber,
44 second suction hole row, 44a second suction hole, 44b second suction chamber,
45 third suction hole row, 45a third suction hole, 45b third suction chamber,
46 first paper support surface, 47 backing lifting mechanism, 48 suction switching mechanism,
49 suction fan, 50 sub-platen, 51 second paper support surface, 60 discharge section,
61 discharge roller pair, 62 discharge drive roller, 63 discharge driven roller,
64 discharge roller holder, P paper, X width direction, Y transport direction, Z height direction

Claims (4)

A carriage having a recording head for performing recording on the recording medium and moving in the width direction of the recording medium;
A colorimeter that is provided on the carriage and measures a color recorded on a recording medium;
A medium support unit facing the recording head and supporting a recording medium;
A back side colorimetric reference part of a reference color when measuring the color, provided on the medium support part, arranged on the back side when the recording surface of the recording medium is the front side;
An upstream suction portion and a downstream suction portion provided on the upstream side and the downstream side in the recording medium feeding direction of the back surface color measurement reference portion in the medium support portion, and sucking the recording medium by negative pressure generated by the suction means; A recording apparatus.   2. The recording apparatus according to claim 1, wherein, in the feeding direction of the recording medium, downstream of the back surface color measurement reference unit on the same surface as the first support surface that contacts the recording medium in the medium support unit when performing color measurement. A second support capable of contacting the recording medium at a position retracted from the surface of the back surface color measurement reference unit to the side opposite to the recording head in a direction in which the recording head and the medium supporting unit face each other. A recording device provided with a surface. 3. The recording apparatus according to claim 1, wherein the upstream suction unit and the downstream suction unit are arranged in the first suction hole row, the second suction hole row, and the third suction port from the upstream side in the recording medium feeding direction. Configure the suction hole array,
Between the first suction hole row and the second suction hole row, an ink receiving portion for receiving ink ejected from the recording head is disposed,
Between the second suction hole row and the third suction hole row, the back color measurement reference portion is disposed,
At the time of recording, receiving the control signal, the recording medium is sucked only by the first suction hole row and the second suction hole row,
A recording apparatus configured to switch to suck a recording medium by at least the second suction hole row and the third suction hole row in response to a control signal when performing color measurement. 4. The recording apparatus according to claim 1, wherein the back surface color measurement reference portion is provided by a displacement mechanism so as to be displaceable in a direction in which the recording head and the medium support portion face each other.
When performing color measurement, the back surface color measurement reference unit receives a control signal and is displaced to a first position that is on the same surface as the first support surface that contacts the recording medium in the medium support unit.
The recording apparatus is configured such that, when recording is performed, the back surface color measurement reference unit is switched so as to be displaced from the first support surface to a second position retracted to the opposite side of the recording head in response to a control signal.

Images