JP2017121997A - Measuring device, printing device and measuring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring device capable of precise measurement to a medium, and to provide a printing device and a measuring method.SOLUTION: A printer includes: a colorimeter for measuring information on a side of a printing surface of a medium having the printing surface; and a first movable holding plate 163 and a second movable holding plate 164 imparting tensile force in a direction along the printing surface relative to a medium having a region to which a measuring device performs measurement.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a measuring apparatus, a printing apparatus, a measuring method, and the like.

2. Description of the Related Art Conventionally, in a printer that prints an image on a medium, a configuration is known in which a suction mechanism is provided on a platen that holds the medium, and the medium is sucked toward the platen by the suction mechanism (see, for example, Patent Document 1).
In the apparatus described in Patent Document 1, a large number of suction holes are provided on the platen surface provided on the upper surface of the platen. These suction holes communicate with a suction passage provided inside the platen, and a suction duct is provided at a communication port communicating with the suction passage. An intake fan is provided in the suction duct, and air is sucked from the suction hole by driving the intake fan. Thereby, the medium conveyed on the upper part of the platen is conveyed while being sucked by the platen surface.

JP 2010-201683 A

By the way, there are cases in which scanning measurement is performed on the medium, such as by performing color measurement by scanning a measuring instrument along the width direction of the medium with respect to a color patch provided on the medium. In such scanning measurement (for example, colorimetry), light from a light source is irradiated onto a medium, and light reflected (or transmitted) by the medium is received by a light receiving unit. In this case, if the medium has slight wrinkles or undulations, the direction of reflected light fluctuates, an error occurs in the measured value, and the measurement accuracy decreases.
In the printer described in Patent Document 1, the flatness is maintained by sucking the media, but the media is transported while sucking the media. Therefore, it is necessary to adjust the balance between the media transport and the suction force. is there. For this reason, it is necessary to suppress the suction force to some extent, and there is a problem that the flatness of the medium cannot be sufficiently secured, and high measurement accuracy cannot be obtained when performing scanning measurement.

  An object of the present invention is to provide a measuring apparatus, a printing apparatus, and a measuring method capable of performing high-precision measurement on a medium.

  The measuring apparatus according to an application example of the present invention is a measuring device that measures information on the first surface side of a medium having a first surface, and the medium that has a region in which the measuring device performs measurement. Tension applying means for applying tension in a direction along the first surface.

  In this application example, the tension applying unit applies a tension along the first surface to the medium. For this reason, even when the medium has irregularities, the irregularities are stretched by tension, so that the medium can be held flat, and the flatness is higher than when the medium is simply sucked to the holding surface. . Therefore, when measuring a medium (measuring information on the first surface side of the medium) with a measuring instrument, the measurement can be performed with high accuracy.

The measuring apparatus according to this application example includes a first moving unit that moves the measuring device along a first direction, and the tension applying unit includes a first tension applying unit that applies tension along the first direction. It is preferable to include.
In this application example, the scanning measurement along the first direction can be performed on the medium by moving the measuring device along the first direction by the first moving unit. In the case of such scanning measurement along the first direction, if there are wrinkles or undulations along the first direction, the measurement accuracy is lowered. On the other hand, in this application example, since the tension along the first direction is applied by the first tension applying unit, in particular, the unevenness (the wrinkles and undulations) along the first direction can be improved by the tension. Can be held with high flatness along the first direction. Thereby, the measurement accuracy of the scanning measurement along the first direction can be improved.

In the measuring apparatus according to this application example, the first tension applying unit may include a first suction unit that sucks a second surface of the medium opposite to the first surface, and the first suction unit in the first direction. It is preferable to include a suction part moving means for moving the
In this application example, after the medium is sucked by the first suction part, tension is applied to the medium by moving the first suction part along the first direction by the suction part moving unit. By adopting a configuration in which the medium is sucked by the first suction part, a part of the medium can be brought into close contact with the first suction part. Then, by moving the first suction part in the first direction, tension according to the amount of movement is applied, and the media can be pulled and unevenness caused by wrinkles and undulations can be extended and flattened.
Further, when a part of the medium is fixed and the fixed part is moved, depending on the amount of movement, the tension may be too large and the medium may be damaged. On the other hand, in this application example, since the medium is sucked and brought into close contact, the medium can be slid with respect to the first suction part even if the movement amount of the first suction part is large. Inconveniences such as media damage due to excessive tension can be suppressed.

In the measurement apparatus according to this application example, a pair of the first suction units are provided along the first direction, and the suction unit moving unit is configured to apply at least one of the pair of first suction units to the other. It is preferable to apply the tension to the medium by separating them.
In this application example, tension is applied to the medium by separating one of the pair of first suction portions from the other.
As a method of applying tension to the media using the first suction unit, a part of the media may be fixed with a fixing member such as a clip, and the portion sucked by the first suction unit of the media may be moved. For example, it is necessary to separately provide a drive mechanism for driving the clip and sandwiching the medium, which leads to a complicated configuration. On the other hand, as in this application example, in a configuration in which a pair of first suction parts is provided and at least one of these first suction parts is moved, the suction mechanism of the first suction part can be shared. The configuration can be simplified.

In the measuring apparatus according to this application example, it is preferable that the suction unit moving unit applies the tension to the medium by separating both of the pair of first suction units by the same amount.
In this application example, since the tension is applied to the medium by moving the pair of first suction parts by the same amount in the direction in which they are separated from each other, the positional deviation of the medium can be suppressed. That is, when only one of the pair of first suction parts is moved, there is a possibility that the medium is shifted in the moving direction of the first suction part. Even when the amount of movement of the pair of first suction parts is different, the medium may be shifted to the larger amount of movement. On the other hand, in this application example, since the pair of first suction parts are moved by the same amount in the direction of separating from each other, the positional deviation of the media can be suppressed, and the measurement by the measuring instrument is not hindered and highly accurate. Measurement can be performed.

In the measurement apparatus according to this application example, the first suction unit is provided so as to penetrate the first suction unit from the first holding surface and the first holding surface that holds the medium, and sucks the medium. It is preferable to have a first suction hole.
In this application example, the first suction part includes a first holding surface and a first suction hole provided through the first holding surface. In such a configuration, the medium can be sucked and held on the first holding surface by sucking air from the first suction hole.

In the measurement apparatus of this application example, the suction part moving unit includes a biasing member that biases the first suction part along the first direction, and a biasing direction of the biasing member. It is preferable to provide a moving mechanism for moving the lens to the opposite side.
The urging direction by the urging member may be a tension applying direction or a direction different from the tension applying direction. In the former case, the first suction part is moved in advance to a predetermined position opposite to the urging direction by the moving mechanism. And when tension | tensile_strength is given to a medium, a medium is attracted | sucked by a 1st suction part and the motive power of a moving mechanism is cancelled | released. As a result, the first suction portion is urged and moved in the tension applying direction by the urging force of the urging member, and tension is applied to the medium.
In the latter case, the first suction part is positioned at a predetermined initial position by the biasing force of the biasing member before the tension is applied to the medium. Then, the medium is sucked and the moving mechanism is driven to move the first suction part, thereby applying tension to the medium.
In this application example as described above, the moving mechanism of the first suction unit can be simplified, and the flatness of the media can be improved with a simple configuration.

In the measuring apparatus according to this application example, it is preferable that the tension applying unit includes a second tension applying unit that applies a tension along the second direction intersecting the first direction to the medium.
In this application example, the tension applying unit further includes a second tension applying unit that applies a tension along the second direction to the medium. For this reason, even if the medium has irregularities along the second direction, the irregularities are stretched by the tension applied by the second tension applying means. As a result, the flatness of the media can be further improved, and the media can be measured with higher accuracy.

In the measuring apparatus according to this application example, the second tension applying unit includes a roller that conveys the medium along the second direction, and applies the tension along the second direction by operating the roller. It is preferable to do.
In this application example, a tension along the second direction is applied by a roller that conveys the medium. As a result, the configuration can be simplified compared to the case where a mechanism for applying tension is provided separately from the transport mechanism for transporting the media.

In the measuring apparatus according to this application example, it is preferable that the measuring device further includes an adhesion unit that causes the medium to adhere to a second holding surface that holds the region where the measurement is performed.
In this application example, the area where the media is measured (measurement area) is held on the second holding surface by the contact means. For this reason, when measuring with a measuring instrument, the flatness of the medium is enhanced by holding the measurement area of the medium on the second holding surface in a state where the medium is stretched by the tension applying means as described above. Thus, the measurement area can be held in a state maintained in the above-described manner, and measurement by the measuring instrument can be performed with high accuracy.

In the measurement apparatus according to this application example, the contact unit includes a second suction unit that sucks a region where the measurement device of the medium performs measurement on the second surface opposite to the first surface of the medium. Is preferred.
In this application example, the contact unit holds the measurement area on the second holding surface by sucking the measurement area of the medium by the second suction unit. In such a configuration, since the second surface side of the medium is sucked, there is no need to provide a separate member on the first surface side, and the measurement of the media by the measuring instrument is not hindered and the measurement is performed efficiently. it can.

In the measurement apparatus according to this application example, it is preferable that the second suction portion includes a second suction hole that is provided so as to penetrate the second suction portion from the second holding surface and sucks the media.
In this application example, the second suction part has a second suction hole penetrating the second holding surface. For this reason, by sucking air from the second suction hole, the medium is sucked together with the air, and the medium can be held on the second holding surface.

In the measurement apparatus according to this application example, the tension applying unit includes a first holding surface that holds the medium, and a first suction unit that is provided on the first holding surface and has a first suction hole that sucks the medium. And a suction part moving means for moving the first suction part, and the first suction hole and the second suction hole are preferably communicated with each other via an intake passage.
In this application example, the tension applying unit includes the first suction unit having the first holding surface and the first suction hole as described above, and the suction unit moving unit, and the first suction hole and the second suction hole. And communicate with each other through the intake passage. For this reason, by providing an intake mechanism (for example, a fan or the like) in the intake passage, it is possible to drive both the first suction unit and the second suction unit to suck the media onto the first holding surface and the second holding surface. . Therefore, the configuration can be simplified as compared with the case where the intake mechanism is provided for each of the first suction hole and the second suction hole.

The measuring apparatus according to this application example includes an opening / closing member that opens and closes at least a part of the intake path communicating with the second suction hole, and closes the intake path by the opening / closing member when the tension is applied to the medium. When the measurement by the measuring instrument is performed, it is preferable that the intake path is opened by the opening / closing member.
In this application example, an opening / closing member that opens and closes at least a part of the intake path communicating with the second suction hole is provided. Therefore, when applying tension to the media, the suction path communicating with the second suction hole is closed, so that only the first suction portion sucks the media, and the tension is applied by the movement of the first suction portion. be able to. In other words, when applying the tension, if the media is in close contact with the second holding surface, the media is in close contact with the second holding surface in a state where there are irregularities such as wrinkles, bending, and undulation, and the unevenness due to the tension is stretched. It becomes difficult. On the other hand, according to the above configuration, when applying tension, the medium is not in close contact with the second holding surface, so that the unevenness can be suitably extended to make a flat surface.
Further, when performing the measurement, the opening / closing member is opened, the medium is made flat by the tension as described above by sucking the medium from the second suction hole and closely contacting the second holding surface. It will be hold | maintained at a 2nd holding surface, and the improvement of a measurement precision can be aimed at.

A printing apparatus according to an application example of the invention includes the above-described measuring apparatus and a printing unit that prints an image on the medium.
In this application example, the measuring device as described above is provided in a printing apparatus that performs printing by the printing unit. For this reason, the image printed on the medium by the printing unit can be measured by the measuring device without moving the medium.

A measuring method of an application example according to the present invention is a measuring method for measuring information on the first surface side of a medium having a first surface by a measuring device, wherein the measuring device has a region in which the measuring is performed. A tension applying step of applying tension to the medium in a direction along the first surface and a measuring step of measuring the region by the measuring device are performed.
In this application example, the tension is applied to the medium along the first surface by the tension applying step, so that even when the medium has unevenness, the unevenness is stretched by the tension and held with high flatness. become. For this reason, when carrying out the measurement of the media by the measuring instrument, the measurement can be carried out with high accuracy.

In the measurement method according to this application example, it is preferable that the method further includes a contact step in which the medium is brought into close contact with a holding surface that holds a region where the measuring device of the medium performs measurement.
In this application example, the measurement area of the medium is held on the holding surface by the contact step. Therefore, the occurrence of unevenness in the measurement region can be suppressed, and the measurement accuracy can be improved.

In the measurement method of this application example, it is preferable that the contact step is performed after the tension applying step, and the measurement step is performed after the contact step.
In this application example, since the adhesion step is performed after the tension application step, the medium is closely adhered to the holding surface while being stretched and flattened by the tension. Therefore, for example, the flatness of the media can be improved as compared with the case where the tension applying step is performed after the contact step. In addition, since the measurement step is performed after the contact step, the measurement can be performed on the measurement region of the medium that is maintained flat.

1 is a diagram illustrating a schematic configuration of a printer 1 according to an embodiment of the present invention. Schematic which shows the structure of the colorimeter of this embodiment. Sectional drawing which shows schematic structure of the optical filter device of this embodiment. FIG. 2 is a cross-sectional perspective view showing a schematic configuration of the platen of the present embodiment. The figure which shows the outline at the time of seeing the platen of this embodiment from the carriage side. The figure which shows the outline of a part of cross section along the X direction of the platen of this embodiment, and a 1st suction part moving means and a 2nd suction part moving means. FIG. 3 is a block diagram illustrating a functional configuration of a CPU included in the control unit of the printer according to the embodiment. 6 is a flowchart illustrating color measurement processing in the printer of the present embodiment. Schematic for demonstrating tension | tensile_strength to the Y direction of a medium in this embodiment. The figure which shows the state which moved the 1st movement holding plate and the 2nd movement holding plate in this embodiment. The figure which shows schematic structure of the platen in the modification of this embodiment. The figure which shows schematic structure of the platen in the further another modification of this embodiment. The figure which shows schematic structure of the platen in the further another modification of this embodiment. Sectional drawing which shows schematic structure of the platen in the further another modification of this embodiment. The figure which shows schematic structure of the platen in the further another modification of this embodiment.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In this embodiment, as an example of the printing apparatus of the present invention, a printer 1 (inkjet printer) provided with a measuring device will be described below.

[Schematic configuration of printer]
FIG. 1 is a diagram illustrating a schematic configuration of a printer 1 according to the present embodiment.
As shown in FIG. 1, the printer 1 includes a supply unit 11, a transport unit 12, a carriage 13, a carriage movement unit 14 (first movement unit of the present invention), a control unit 15, and a platen 16. ing. The printer 1 controls the units 11, 12, and 14 and the carriage 13 based on print data input from an external device 20 such as a personal computer, for example, and prints the print surface A 1 of the medium A (the first facing the carriage). Print the image on top. Further, the printer 1 of the present embodiment forms a color patch for colorimetry at a predetermined position on the printing surface A1 based on preset calibration print data, and performs spectroscopic measurement on the color patch. As a result, the printer 1 compares the actually measured value for the color patch with the calibration print data to determine whether or not the printed color has a color shift. If there is a color shift, the printer 1 is based on the actually measured value. To correct the color. In the present embodiment, in the spectroscopic measurement, the medium A is transported onto the platen 16 by the transport unit 12, and tension is applied to the medium A on the platen 16 to stretch the wrinkles, bends, swells, etc. A surface. Then, spectroscopic measurement is performed on the medium A having a flat surface by using a colorimeter 17 provided on the carriage 13.
Hereinafter, each configuration of the printer 1 will be specifically described.

The supply unit 11 is a unit that supplies the medium A that is an image formation target (in this embodiment, a paper surface is exemplified) to the image formation position. Although not shown, the supply unit 11 includes, for example, a roll body around which the medium A is wound, a roll drive motor, a roll drive wheel train, and the like. And based on the command from the control unit 15, the roll drive motor is driven to rotate, and the rotational force of the roll drive motor is transmitted to the roll body via the roll drive wheel train so that the roll body is wound around the roll body. The paper surface is supplied downstream (+ Y direction) in the Y direction (sub-scanning direction; the second direction of the present invention).
In the present embodiment, the supply unit is not limited to the above-described configuration. For example, the medium A may be supplied by any supply method such as, for example, supplying the media A such as paper sheets stacked on a tray or the like one by one using a roller or the like. It may be supplied.

The transport unit 12 transports the medium A supplied from the supply unit 11 along the Y direction. The transport unit 12 includes a transport roller 121 and a discharge roller 122.
The transport roller 121 includes a first drive roller 121A, and a first driven roller 121B disposed with the first drive roller 121A and the medium A interposed therebetween. The first driving roller 121A is driven to rotate by transmission of a driving force from a motor (not shown), and the medium A is placed along the Y direction with the medium A sandwiched between the first driven roller 121B. Transport.

A platen 16 that faces the carriage 13 is provided on the downstream side (+ Y side) of the transport roller 121 in the Y direction. The platen 16 abuts on a surface (back surface A2; see FIG. 6) opposite to the printing surface A1 of the medium A conveyed in the sub-scanning direction (Y direction), and holds the medium A. The back surface A2 corresponds to the second surface of the present invention.
A detailed description of the platen 16 will be described later.

The discharge roller 122 is provided on the downstream side of the platen 16 and includes a second drive roller 122A and a second driven roller 122B disposed with the second drive roller 122A and the medium A interposed therebetween. The second drive roller 122A is rotationally driven by transmission of a driving force from a motor (not shown), and the medium A is moved along the Y direction with the medium A sandwiched between the second driven roller 122B. Then transport (discharge).
And the conveyance unit 12 in this embodiment gives the tension | tensile_strength along the Y direction with respect to the medium A by the drive of the said conveyance roller 121 and the discharge roller 122 being controlled. That is, the transport unit constitutes a part of the tension applying means of the present invention and constitutes the second tension applying means of the present invention.

The carriage 13 includes a printing unit 18 that prints an image on the printing surface A1 of the medium A, and a colorimeter 17 that performs spectroscopic measurement at a predetermined measurement position on the printing surface A1.
The carriage 13 is provided by a carriage moving unit 14 so as to be movable along a main scanning direction (X direction; the first direction of the present invention) intersecting the Y direction.
The carriage 13 is connected to the control unit 15 by, for example, a flexible circuit. Based on a command from the control unit 15, the carriage 13 performs printing processing (image forming processing on the printing surface A1) and the colorimeter 17. Perform spectroscopic measurements.
The detailed configuration of the carriage 13 will be described later.

The carriage moving unit 14 reciprocates the carriage 13 along the X direction based on a command from the control unit 15.
The carriage moving unit 14 includes, for example, a carriage guide shaft 141 along the X direction, and moves the carriage 13 along the carriage guide shaft 141.
A specific configuration of the carriage moving unit 14 may be any configuration as long as the carriage 13 is configured to move along the X direction. For example, a configuration in which a timing belt supported substantially parallel to the X configuration is driven by a carriage motor to drive a carriage fixed to a part of the timing belt can be exemplified.

Next, the configuration of the printing unit 18 and the colorimeter 17 provided on the carriage 13 will be described.
[Configuration of printing unit (image forming unit)]
The printing unit 18 is provided to face the medium A, and forms an image by individually ejecting a plurality of colors of ink onto the printing surface A1.
The printing unit 18 is detachably mounted with ink cartridges corresponding to a plurality of colors of ink, and ink is supplied from each ink cartridge to an ink tank (not shown) via a tube (not shown). Further, nozzles (not shown) for ejecting ink droplets are provided on the lower surface (position facing the printing surface A1) of the printing unit 18 corresponding to each color. For example, piezo elements are arranged in these nozzles, and by driving the piezo elements, ink droplets supplied from the ink tank are ejected and land on the printing surface A1 to form dots.

[Configuration of colorimeter]
FIG. 2 is a schematic diagram showing the configuration of the colorimeter 17.
The colorimeter 17 constitutes a measuring instrument according to the present invention, and includes a light source unit 171, an optical filter device 172, a light receiving unit 173, and a light guide unit 174, as shown in FIG. 2.
The colorimeter 17 performs spectroscopic measurement in accordance with the (0 °: 45 ° x) method in the optical geometric conditions defined by the colorimetric standard (JIS Z 8722). That is, the illumination light from the light source unit 171 is irradiated to the medium A from the normal direction. Then, the light component reflected at 45 ° at the measurement position on the medium A is made incident on the optical filter device 172 by the light guide unit 174. Then, the optical filter device 172 emits (transmits) light having a predetermined wavelength from the reflected light and causes the light receiving unit 173 to receive the light. Further, the optical filter device 172 can select a transmission wavelength based on the control of the control unit 15, and measure the light amount of each wavelength of visible light to perform spectroscopic measurement of the measurement position R on the medium A. Is possible.
Note that the present invention is not limited to the (0 °: 45 ° x) method, and may be configured to perform spectroscopic measurement, for example, according to the (45 °: 0 ° x) method. That is, the illumination light may be incident on the medium A from an angle of 45 °, and the light reflected in the normal direction of the medium A may be measured.
Further, in the present embodiment, the configuration in which the light source unit 171 and the light receiving unit 173 are arranged along the X direction is illustrated, but the present invention is not limited thereto, and the light source unit 171 and the light receiving unit 173 may be arranged in the Y direction. Alternatively, the light source unit 171 and the light receiving unit 173 may be arranged along a direction intersecting the XY direction.

[Configuration of light source section]
As shown in FIG. 2, the light source unit 171 includes a light source 171A and an illumination side lens 171B.
In the light source unit 171, the measurement object is irradiated with the light emitted from the light source 171 </ b> A via the illumination side lens 171 </ b> B. The illumination side lens 171B can be configured by a plurality of lenses, for example. As such an illumination side lens 171B, for example, an integrator optical system can be exemplified. In the case of using an integrator optical system, the light amount distribution of the light from the light source 171A is made substantially uniform in the plane, and the light irradiation range is expanded. The medium A can be irradiated.

[Configuration of optical filter device]
FIG. 3 is a cross-sectional view showing a schematic configuration of the optical filter device 172.
The optical filter device 172 includes a housing 6 and a wavelength variable interference filter 5 (spectral element) housed in the housing 6.

(Configuration of wavelength variable interference filter)
The wavelength tunable interference filter 5 is a wavelength tunable Fabry-Perot etalon element, and includes a translucent fixed substrate 51 and a movable substrate 52, as shown in FIG. By being bonded by the bonding film 53, it is configured integrally.
The fixed substrate 51 includes a first groove portion 511 formed by etching and a second groove portion 512 having a groove depth shallower than the first groove portion 511. The first groove portion 511 is provided with a fixed electrode 561, and the second groove portion 512 is provided with a fixed reflective film 54.
The fixed electrode 561 is formed in, for example, an annular shape surrounding the second groove portion 512 and faces the movable electrode 562 provided on the movable substrate 52.
The fixed reflective film 54 is, for example, a metal film such as Ag, an alloy film such as an Ag alloy, a dielectric multilayer film in which a high refractive layer and a low refractive layer are laminated, or a metal film (alloy film) and a dielectric multilayer film are laminated. It is comprised by the laminated body.

The movable substrate 52 includes a movable portion 521 and a holding portion 522 that is provided outside the movable portion 521 and holds the movable portion 521.
The movable part 521 has a thickness dimension larger than that of the holding part 522. The movable portion 521 is formed to have a diameter larger than the diameter of the outer peripheral edge of the fixed electrode 561, and the movable electrode 562 and the movable reflective film 55 are provided on the surface of the movable portion 521 facing the fixed substrate 51. ing.
The movable electrode 562 is provided at a position facing the fixed electrode 561.
The movable reflective film 55 is disposed via the gap G at a position facing the fixed reflective film 54. As the movable reflective film 55, a reflective film having the same configuration as the above-described fixed reflective film 54 can be used.

The holding part 522 is a diaphragm that surrounds the periphery of the movable part 521, and has a thickness dimension smaller than that of the movable part 521. Such a holding part 522 is easier to bend than the movable part 521, and the movable part 521 can be displaced toward the fixed substrate 51 by a slight electrostatic attraction. As a result, the gap dimension of the gap G can be changed while maintaining the parallelism of the fixed reflective film 54 and the movable reflective film 55.
In the present embodiment, the diaphragm-like holding part 522 is illustrated, but the present invention is not limited to this. For example, a configuration in which beam-like holding parts arranged at equiangular intervals around the plane center point are provided. It is good.
A plurality of electrode pads 57 individually connected to the fixed electrode 561 and the movable electrode 562 are provided on the outer peripheral portion of the movable substrate 52 (a region that does not face the fixed substrate 51).

(Case configuration)
As shown in FIG. 3, the housing 6 includes a base 61 and a glass substrate 62. The base 61 and the glass substrate 62 can use, for example, low-melting glass bonding using glass frit (low-melting glass), adhesion with an epoxy resin, or the like, thereby forming a housing space, and this housing space. The wavelength variable interference filter 5 is accommodated in the inside.

The base 61 is formed by, for example, laminating ceramics on a thin plate, and has a recess 611 that can accommodate the wavelength variable interference filter 5. The wavelength variable interference filter 5 is fixed to, for example, a side surface of the recess 611 of the base 61 by a fixing material 64. A light passage hole 612 is provided on the bottom surface of the recess 611 of the base 61. The light passage hole 612 is provided so as to include a region overlapping the reflective films 54 and 55 of the wavelength variable interference filter 5. A cover glass 63 covering the light passage hole 612 is bonded to the surface of the base 61 opposite to the glass substrate 62.

  The base 61 is provided with an inner terminal portion 613 that is connected to the electrode pad 57 of the wavelength tunable interference filter 5, and the inner terminal portion 613 is provided outside the base 61 through a conduction hole 614. Connected to the outer terminal portion 615. The outer terminal portion 615 is electrically connected to the control unit 15.

[Configuration of light receiving unit and light guiding optical system]
Returning to FIG. 2, the light receiving unit 173 is disposed on the optical axis of the wavelength tunable interference filter 5 and receives light transmitted through the wavelength tunable interference filter 5. The light receiving unit 173 outputs a light reception signal (current value) corresponding to the amount of received light based on the control of the control unit 15. The light reception signal output by the light receiving unit 173 is input to the control unit 15 via an IV converter (not shown), an amplifier (not shown), and an AD converter (not shown).
The light guide unit 174 includes a reflecting mirror 174A and a band pass filter 174B.
The light guide 174 reflects the light reflected at 45 ° with respect to the surface of the medium A at the measurement position R onto the optical axis of the wavelength variable interference filter 5 by the reflecting mirror 174A. The band-pass filter 174B transmits light in the visible light range (for example, 380 nm to 720 nm) and cuts ultraviolet light and infrared light. As a result, light in the visible light region is incident on the wavelength variable interference filter 5, and light having a wavelength selected by the wavelength variable interference filter 5 in the visible light region is received by the light receiving unit 173.

[Configuration of platen]
FIG. 4 is a cross-sectional perspective view showing a schematic configuration of the platen 16. FIG. 5 is a diagram showing an outline when the platen 16 is viewed from the carriage 13 side. In FIG. 5, for convenience of explanation, a part of the supply side end 165 and the media holding surface 166A is omitted.
The platen 16 is a member that holds the medium A conveyed by the conveyance unit 12. Further, the platen 16 applies a tension along the X direction to the conveyed medium A, and constitutes a part of the tension applying means in the present invention and also constitutes a first tension applying means in the present invention. The platen 16 includes a platen main body 161, a central holding plate 162 placed on the platen main body 161, a first moving holding plate 163 provided on the + X side of the central holding plate 162, and the central holding plate 162. A second movement holding plate 164 (see FIG. 5) provided on the −X side.
The platen main body 161 includes a supply-side end 165, a media holding unit 166, an intake chamber 167, an air collection chamber 168 that communicates with the intake chamber 167, and a duct 169 that communicates with the air collection chamber 168. ing.

(Configuration of supply end and media holding part)
The supply-side end 165 is provided with a roller groove 165A in which the first drive roller 121A of the transport roller 121 is disposed.
The media holding unit 166 is provided continuously on the + Y side of the supply-side end 165 and has a media holding surface 166A that holds the back surface A2 of the medium A conveyed by the conveyance roller 121. The media holding unit 166 has an opening 166B on the downstream side (+ Y side). The opening 166B is formed in a rectangular shape in plan view having, for example, a pair of sides along the X direction and a pair of sides along the Y direction, and each holding plate 162, 163, 164 (center holding plate 162, first holding plate The movable holding plate 163 and the second movable holding plate 164) are held.

FIG. 6 is a diagram showing a part of a cross section along the X direction of the platen 16 and an outline of a moving mechanism of the first moving holding plate 163 and the second moving holding plate 164. Here, FIG. 6A is a diagram showing the positions where the first movement holding plate 163 and the second movement holding plate 164 have moved to the center holding plate 162 side, and FIG. 6B shows the first movement holding plate. It is a figure which shows the position which the board 163 and the 2nd movement holding | maintenance board 164 moved mutually in the separation direction. In addition, in FIG. 6, the through-hole (after-mentioned) provided in each holding | maintenance board 162,163,164 is not illustrated for convenience of explanation.
In the opening 166B described above, the plate support 166C protrudes toward the inside of the opening over the entire circumference or part of the inner peripheral surface of the opening. Specifically, the holding plates 162, 163, and 164 (the central holding plate 162, the first moving holding plate 163, and the second moving holding plate 164) have the same thickness dimension, and the plate support portion 166C. Is provided at a position where the distance from the media holding surface 166A is the thickness dimension of the holding plates 162, 163, 164.
More specifically, the plate support 166C is provided at the ± X side end of the opening 166B, and extends in the Y direction. The X side plate support 166C1 (see FIGS. 4 and 6), and the ± Y side end of the opening 166B. And a Y side plate support 166C2 (see FIG. 4) extending in the X direction.
The protruding dimension of the X side plate support part 166C1 is larger than the protruding dimension xa of the Y side plate support part 166C2. More specifically, as shown in FIG. 6A, the protrusion dimension xa of the X-side plate support portion 166C1 is equal to or larger than the movement amount xm of the first movement holding plate 163 and the second movement holding plate 164 in the X direction. .

(Configuration of intake chamber 167)
The intake chamber 167 is provided on the + Z side of the media holding unit 166 and includes a bottom surface portion 167C, a front surface portion 167D, a back plate 167E, a side surface portion 167F, a media holding portion 166, and holding plates 162, 163, and 164. .
The bottom surface portion 167C has a first bottom surface 167C1 that faces the opening 166B, and a second bottom surface 167C2 that is provided on the −Y side of the first bottom surface 167C1 and has a longer distance from the media holding surface 166A than the first bottom surface 167C1. . In the present embodiment, the bottom surface portion 167C exemplifies a configuration having the first bottom surface 167C1 and the second bottom surface 167C2, but may be a flat bottom surface without a step.

The front portion 167D rises from the first bottom surface 167C1 to the media holding portion 166 on the + Y side of the bottom surface portion 167C.
The back plate 167E rises from the second bottom surface 167C2 to the media holding portion 166 on the -Y side of the bottom surface portion 167C. The back plate 167E is provided with a large number of intake through holes 167E1 that penetrate the back plate 167E. These intake through holes 167E1 are provided, for example, on the + Z side with respect to the center position in the Z direction of the back plate 167E, and communicate with an air collection chamber 168 described later.
In addition, a shutter 167E2 (opening / closing member of the present invention) is provided in a central portion in the X direction (a back plate 167E corresponding to a first partial intake chamber 167B1 described later) of the back plate 167E. The shutter 167E2 is a shutter that opens and closes the intake through hole 167E1 that communicates the first partial intake chamber 167B1 and the air collection chamber 168, and can advance and retreat in the Z direction, for example.
In this embodiment, an example in which the shutter 167E2 is moved in the Z direction is shown, but a configuration in which the shutter 167E2 is movable in the X direction may be used. A detailed description of the shutter 167E2 will be described later.
The side surface portion 167F rises from the ± X side end of the intake chamber 167 to the media holding portion 166. As shown in FIGS. 4 and 6, the side surface portion 167F may be integrated with the X side plate support portion 166C1.
The intake chamber 167 includes a bottom surface portion 167C, a front surface portion 167D, a back plate 167E, a side surface portion 167F, a media holding portion 166 disposed on the top surface (−Z side), and each holding portion. A box-shaped space surrounded by the plates 162, 163, and 164 is formed.

  Further, the intake chamber 167 is provided with a pair of ribs 167A extending from the bottom surface portion 167C to the media holding portion 166 along the Y direction. The upper surfaces (−Z side surfaces) of these ribs 167A coincide with the upper surfaces of the plate support portions 166C, and the lower surfaces (+ Z side surfaces) of the holding plates 162, 163, and 164 are supported by the upper surfaces of the ribs 167A and the plate support portions 166C. Thus, the upper surfaces of the holding plates 162, 163, and 164 are flush with the media holding surface 166A.

The intake chamber 167 is divided into three partial intake chambers 167B along the X direction by a pair of ribs 167A (a first rib 167A1 on the + X side and a second rib 167A2 on the -X side). Here, the partial intake chamber 167B located at the center in the X direction is the first partial intake chamber 167B1, the partial intake chamber 167B provided on the + X side is the second partial intake chamber 167B2, and the partial intake chamber 167B provided on the −X side is the third. This is referred to as a partial intake chamber 167B3.
Each of the partial intake chambers 167B communicates with the opening 166B, and the central holding plate 162 is fixed to the opening 166B corresponding to the first partial intake chamber 167B1. That is, the center holding plate 162 is supported and joined (fixed) by the pair of ribs 167A and the region between the pair of ribs 167A in the Y-side plate support portion 166C2 of the opening 166B.

The first moving holding plate 163 is supported so as to be movable in the X direction in the opening 166B corresponding to the second partial intake chamber 167B2. That is, the first movement holding plate 163 is supported by the first rib 167A1, the + X side region of the Y side plate support portion 166C2, and the X side plate support portion 166C1 located on the + X side. Here, as shown in FIG. 6 (A), the first rib 167A1 has the central holding plate 162 fixed to the −X side region on the upper surface and moved first to the + X side region (width dimension xb along the X direction). The holding plate 163 is movably supported. Here, the width dimension xb is equal to or greater than the movement amount xm of the first movement holding plate 163 in the X direction.
Similarly, the second movement holding plate 164 is supported to be movable in the X direction in the opening 166B corresponding to the third partial intake chamber 167B3. That is, the second movement holding plate 164 is supported by the second rib 167A2, the -X side region of the Y side plate support portion 166C2, and the X side plate support portion 166C1 located on the -X side. Here, as shown in FIG. 6A, the rib 167A positioned on the −X side has the central holding plate 162 fixed to the + X side region on the upper surface, and the −X side region (the width dimension xb along the X direction). The second movement holding plate 164 is movably supported. Here, the width dimension xb is equal to or greater than the movement amount xm of the second movement holding plate 164 in the X direction.

(Configuration of central holding plate)
As described above, the center holding plate 162 is fixed so as to cover the opening 166B corresponding to the first partial intake chamber 167B1. The central holding plate 162 is a member that holds the medium A when performing spectroscopic measurement on the medium A, corresponds to the second suction portion of the present invention, and is a central holding surface 162A that holds the medium A (the present invention). Second holding surface).
As shown in FIGS. 4 and 5, the central holding plate 162 includes a plurality of central suction holes 162B (second suction holes in the present invention) penetrating from the central holding surface 162A in the thickness direction of the central holding plate 162. ing. These central suction holes 162B communicate with the first partial suction chamber 167B1, and air is sucked from a duct 169, which will be described later, so that the medium A on the central holding surface 162A is sucked together with the air, and the medium A is centered on the central holding surface. It is closely attached to 162A. That is, the contact means of the present invention is constituted by the central suction hole 162B.

Incidentally, in the first partial intake chamber 167B1 corresponding to the central holding plate 162, the shutter 167E2 is provided on the back plate 167E as described above.
The shutter 167E2 is provided so as to be movable in the Z direction with respect to the back plate 167E, for example, as shown in FIGS. As a moving mechanism of the shutter 167E2, for example, a guide member that guides the movement of the shutter 167E2 in the Z direction, an urging member such as a spring that returns the shutter 167E2 to an initial position (for example, a position that closes the intake through hole 167E1), and the like. And a solenoid that moves the shutter 167E2 to the −Z side. Moreover, it is not limited to a solenoid, It is good also as a moving mechanism using various actuators or motor drive force.
By providing such a shutter 167E2, the suction of air (media A) from the central suction hole 162B of the central holding plate 162 can be switched. That is, before carrying out the spectroscopic measurement at the time of transporting the medium A, the intake through hole 167E1 of the back plate 167E that is the intake path communicating with the central suction hole 162B is closed by the shutter 167E2, and at the time of spectroscopic measurement, It is possible to open the intake through hole 167E1 by moving the shutter 167E2.

(Configuration of the first moving holding plate)
The first movement holding plate 163 is provided to cover the opening 166B corresponding to the second partial intake chamber 167B2. That is, the first moving holding plate 163 is disposed on the + X side of the central holding plate 162.
The first movement holding plate 163 corresponds to the first suction portion of the present invention and constitutes the first tension applying means of the present invention. The first movement holding plate 163 has a first movement holding surface 163A (first holding surface in the present invention) that holds the medium A.
4 and 5, the first movement holding plate 163 has a plurality of side suction holes 163B penetrating from the first movement holding surface 163A in the thickness direction of the first movement holding plate 163 (the present invention). 1st suction hole). These side suction holes 163B communicate with the second partial suction chamber 167B2, and suck air from the duct 169 described later, thereby sucking the medium A on the first movement holding surface 163A together with the air.

Further, on the surface of the first movement holding plate 163 opposite to the first movement holding surface 163A and facing the second partial intake chamber 167B2, a first suction part moving means for moving the first movement holding plate 163 in the X direction. 163C (suction part moving means in the present invention) is provided.
As long as this 1st suction | inhalation part moving means 163C is the structure which moves the 1st movement holding plate 163 to a X direction, what kind of structure may be taken. However, in order to hold the medium A on the first movement holding surface 163A of the first movement holding plate 163, it is necessary to have a configuration in which the constituent members of the first suction part moving means 163C do not protrude on the first movement holding surface 163A side. is there. An example of such a configuration is the configuration shown in FIG.

  That is, the first suction part moving means 163C shown in FIG. 6 includes a solenoid 163C1 (the moving mechanism of the present invention) provided on the side part 167F on the + X side and having the movable core 163C2 connected to the first movement holding plate 163. . The first suction part moving means 163C includes a pin 163C3 provided on the −X side of the first movement holding plate 163 and protruding to the + Z side, and a biasing member 163C4 that connects the first rib 167A1. Prepare.

The urging member 163C4 is configured by a tension spring or the like, and urges the first moving holding plate 163 to the −X side. Thereby, in a state where no current is input to the solenoid 163C1, the first moving holding plate 163 is positioned on the −X side and abuts against the central holding plate 162. Further, the solenoid 163C1 is a pull type solenoid, and when a current is input, the movable core 163C2 is sucked to move the first movement holding plate 163 to the + X side by the movement amount xm. While the current is input to the solenoid 163C1, since the movable core 163C2 is continuously attracted, the first movement holding plate 163 is maintained in a state of being moved by the movement amount xm on the + X side. When the current input to the solenoid 163C1 is stopped, the first movement holding plate 163 moves to the −X side by the urging force of the urging member 163C4 as described above.
In the above example, the solenoid 163C1 is a pull-type solenoid and the direction of the urging force of the urging member 163C4 is −X side. However, the present invention is not limited to this, and the solenoid 163C1 is a push-type solenoid and the urging member 163C4 is + X. A compression spring or the like that applies an urging force to the side may be used. Further, the positions of the solenoid 163C1 and the biasing member 163C4 may be reversed.

(Configuration of the second moving holding plate)
The second movement holding plate 164 is provided so as to cover the opening 166B corresponding to the third partial intake chamber 167B3. That is, the second moving holding plate 164 is disposed on the −X side of the central holding plate 162. The second movement holding plate 164 corresponds to the first suction portion of the present invention, and constitutes the first tension applying means of the present invention together with the first movement holding plate 163. The second movement holding plate 164 has a second movement holding surface 164A (first holding surface in the present invention) that holds the medium A.
The specific configuration of the second movement holding plate 164 is the same as that of the first movement holding plate 163. As shown in FIG. 5, the thickness direction of the second movement holding plate 164 is changed from the second movement holding surface 164A. A plurality of penetrating side suction holes 164B (first suction holes in the present invention) are provided. These side suction holes 164B communicate with the third partial intake chamber 167B3, and suck air from the duct 169 described later, thereby sucking the medium A on the second movement holding surface 164A together with the air.

Further, on the surface of the second movement holding plate 164 opposite to the second movement holding surface 164A and facing the third partial intake chamber 167B3, second suction portion moving means for moving the second movement holding plate 164 in the X direction. 164C (suction part moving means in the present invention) is provided.
In the present embodiment, when the medium A is flattened, the second movement holding plate 164 is moved by the same amount as the movement amount of the first movement holding plate 163. Therefore, it is preferable that the second suction unit moving unit 164C has the same configuration as the first suction unit moving unit 163C.
That is, as shown in FIG. 6, the second suction part moving unit 164C includes a solenoid 164C1 (movement mechanism) and a biasing member 164C4, similarly to the first suction part moving unit 163C. The solenoid 164C1 is a pull-type solenoid that is provided on the side surface portion 167F on the -X side and moves the movable core 164C2 connected to the second movement holding plate 164 to the -X side. Further, a pin 164C3 protruding to the + Z side is provided on the + X side of the second movement holding plate 164, and the urging member 164C4 is connected between the pin 164C3 and the second rib 167A2 to hold the second movement holding. The plate 164 is biased to the + X side.
In addition, although the example which made the 1st suction | inhalation part moving means 163C and the 2nd suction part moving means 164C substantially the same structure was shown here, it is not limited to this. For example, the first suction part moving unit 163C is configured to move the first movement holding plate 163 by the solenoid 163C1 and the biasing member 163C4, and the second suction holding unit 164C is moved by the roller driving force or the like. It is good also as a structure to move.

(Configuration of air collection chamber and duct)
The air collection chamber 168 is provided, for example, on the −Y side (the + Z side of the supply side end 165) of the intake chamber 167. Specifically, the air collecting chamber 168 is a space surrounded by the back plate 167E, the air collecting chamber bottom surface 168A, the side wall 168B rising from the air collecting chamber bottom surface 168A to the supply side end portion 165, and the supply side end portion 165. It is comprised by.
The air collection chamber 168 communicates with the intake chamber 167 via an intake through hole 167E1 provided in the back plate 167E. In other words, the first partial intake chamber 167B1, the second partial intake chamber 167B2, and the third partial intake chamber 167B3 communicate with each other using the air collection chamber 168 as a suction path. That is, the side suction hole 163B provided in the first moving holding plate 163, the side suction hole 164B provided in the second moving holding plate 164, and the central suction hole 162B provided in the central holding plate 162 are inhaled. It communicates in the air collection chamber 168 which is a road.
Further, one end of a duct 169 is connected to the air collecting chamber bottom surface 168A of the air collecting chamber 168. The other end of the duct 169 is an exhaust port (not shown) communicating with the outside of the printer 1, and an intake fan 169A (see FIG. 5) is fixed to the exhaust port.
In the present embodiment, a configuration in which the duct 169 is provided in the air collection chamber 168 and the intake fan 169A is provided in the duct 169 is illustrated, but a configuration in which an intake fan is provided in the air collection chamber 168 may be used.

[Control unit configuration]
As shown in FIG. 1, the control unit 15 includes an I / F 151, a unit control circuit 152, a memory 153, and a CPU (Central Processing Unit) 154.
The I / F 151 inputs print data input from the external device 20 to the CPU 154.
The unit control circuit 152 includes drive units (intake fan 169A, first suction) for the supply unit 11, the transport unit 12, the printing unit 18, the light source 171A, the variable wavelength interference filter 5, the light receiving unit 173, the carriage moving unit 14, and the platen 16. Part moving means 163C, second suction part moving means 164C, and shutter 167E2) are provided, and the operation of each unit is controlled based on a command signal from CPU 154. The control circuit of each unit may be provided separately from the control unit 15 and connected to the control unit 15.

The memory 153 stores various programs and various data for controlling the operation of the printer 1.
As various data, for example, V-λ data indicating the wavelength of light transmitted through the variable wavelength interference filter 5 with respect to the voltage applied to the electrostatic actuator 56 when controlling the variable wavelength interference filter 5, and print data For example, print profile data that stores the ejection amount of each ink with respect to the included color data. Moreover, the light emission characteristic with respect to each wavelength of the light source 171A, the light reception characteristic (light reception sensitivity characteristic) with respect to each wavelength of the light receiving part 173, etc. may be memorize | stored.

FIG. 7 is a block diagram illustrating a functional configuration of the CPU 154 included in the control unit 15 of the printer 1.
The CPU 154 reads out and executes various programs stored in the memory 153, and as shown in FIG. 7, the scanning control unit 154A, the print control unit 154B, the measurement control unit 154C, the colorimetric calculation unit 154D, and the calibration unit. It functions as 154E or the like.

  The scanning control means 154A outputs a command signal for driving the supply unit 11, the transport unit 12, and the carriage moving unit 14 to the unit control circuit 152. Thereby, the unit control circuit 152 drives the roll drive motor of the supply unit 11 to supply the medium A to the transport unit 12. Further, the unit control circuit 152 drives the transport motor of the transport unit 12 to transport the predetermined area of the medium A along the Y direction to a position facing the carriage 13 of the platen 16. Further, the unit control circuit 152 drives the carriage motor 142 of the carriage moving unit 14 to move the carriage 13 along the X direction.

  The print control unit 154B outputs a command signal for controlling the printing unit 18 to the unit control circuit 152 based on print data input from the external device 20, for example. When a command signal is output from the print control unit 154B to the unit control circuit 152, the unit control circuit 152 outputs a print control signal to the printing unit 18 and drives a piezo element provided in the nozzle to the medium A. Eject ink. When printing is performed, the carriage 13 is moved along the X direction, and during the movement, a dot forming operation for forming dots by ejecting ink from the printing unit 18 and the medium A are transported in the Y direction. The conveying operation is alternately repeated to print an image composed of a plurality of dots on the medium A.

The measurement control means 154C performs spectroscopic measurement. Specifically, the measurement control unit 154C outputs a command signal for controlling the light source 171A to the unit control circuit 152 to emit light from the light source 171A. Further, the measurement control means 154C reads the drive voltage to the electrostatic actuator 56 for the wavelength of the light transmitted through the wavelength variable interference filter 5 from the V-λ data of the memory 153, and outputs a command signal to the unit control circuit 152. . As a result, the unit control circuit 152 applies the commanded drive voltage to the wavelength variable interference filter 5, and light having a desired transmission wavelength is transmitted from the wavelength variable interference filter 5.
The measurement control unit 154C stores the voltage in the memory 153 in association with the voltage applied to the electrostatic actuator 56 (or the wavelength of light transmitted through the wavelength tunable interference filter 5 corresponding to the voltage).

  Furthermore, the measurement control means 154C controls the driving of the transport unit 12, the driving control of the intake fan 169A of the duct 169, the movement control of the first moving holding plate 163 and the second moving holding plate 164, and the shutter 167E2 during the spectroscopic measurement. The movement control is performed to keep the medium A to be measured flat.

The colorimetric calculation unit 154D measures the chromaticity with respect to the measurement position R based on the amount of received light with respect to light having a plurality of wavelengths obtained by spectroscopic measurement.
The calibration unit 154E corrects (updates) the print profile data based on the color measurement result obtained by the color measurement calculation unit 154D.

[Spectroscopic measurement method]
Next, color measurement processing in the printer 1 of the present embodiment will be described based on the drawings.
FIG. 8 is a flowchart showing the color measurement process in the printer 1.
Here, an example will be described in which color measurement processing is performed on a plurality of color patches printed by the printing unit 18, for example, as color measurement processing by the printer 1.
In the color measurement process of this example, an instruction to perform the color measurement process is received, for example, by a user operation or an input from the external device 20 (step S1). When the command is received in step S1, the scanning control unit 154A controls the transport unit 12 to place the medium A in the Y position so that the measurement position R of the colorimeter is positioned on the line where the color patch is arranged. It is conveyed along the direction (step S2). In the initial state, the carriage 13 is assumed to be located at the home position.

  Then, when the medium A is transported by the transport unit 12, the measurement control means 154C first closes the intake through hole 167E1 by the shutter 167E2 (step S3) and drives the intake fan 169A (step S4). Thus, both end portions in the X direction of the medium A are sucked together with air from the side suction holes 163B of the first movement holding plate 163 and the side suction holes 164B of the second movement holding plate 164. At this time, since the intake path of the central suction hole 162B is closed by the shutter 167E2, the medium A is not attracted to the central holding plate 162.

Next, the measurement control unit 154C controls the first suction unit moving unit 163C and the second suction unit moving unit 164C to simultaneously separate the first moving holding plate 163 and the second moving holding plate 164 from each other. Are moved by the same amount (step S5).
Specifically, the first movement holding plate 163 and the second movement holding plate 164 are moved from the initial positions as shown in FIGS. 5 and 6A to the positions as shown in FIG. 6B. That is, the first movement holding plate 163 is moved to the + X side by the movement amount xm, and the second movement holding plate 164 is moved to the −X side by the movement amount xm.

In step S5, tension along the X direction is applied to the medium A. Therefore, even when the medium A has irregularities such as wrinkles, deflections, and undulations along the X direction as shown in FIG. 6A, the irregularities are stretched as shown in FIG. Becomes flat.
At this time, the medium A is sucked by the first moving holding plate 163 and the second moving holding plate 164 by being sucked by the side suction holes 163B and 164B, and the first moving holding plate 163 and the second moving holding plate 164 are held. It is slidably positioned with respect to the plate 164. Therefore, even when the movement amount xm of the first movement holding plate 163 or the second movement holding plate 164 is large, the medium A slides with respect to the first movement holding plate 163 or the second movement holding plate 164, so that the medium A breakage of A is suppressed.
In step S5, the medium A is not sucked through the central suction hole 162B. That is, when the medium A is sucked through the central suction hole 162B, the medium A is brought into close contact with the central holding plate 162 in a state where the medium A has irregularities such as wrinkles, bending, and undulation. For this reason, when tension is applied to the medium A, the unevenness of the medium A may not be sufficiently extended. In contrast, by applying tension in a state where the medium A is not sucked through the central suction hole 162B, irregularities such as wrinkles, bending, and undulation of the medium A can be suitably extended.
Further, since the movement amount xm of the first movement holding plate 163 and the second movement holding plate 164 is the same and the movement directions are opposite to each other, even when the medium A is pulled along the X direction, the medium A Position fluctuation can be suppressed.

In addition, the measurement control unit 154C controls the transport roller 121 and the discharge roller 122 of the transport unit 12 to apply a Y-direction tension to the medium A (step S6). That is, in this embodiment, the tension | tensile_strength provision step of this invention is implemented by step S5 and step S6.
FIG. 9 is a schematic diagram for explaining the application of tension in the Y direction.
As shown in FIG. 9, in this embodiment, the measurement control unit 154C causes the transport roller 121 to transport the medium A to the upstream side (−Y side), and the discharge roller 122 to transport the medium A to the downstream side (+ Y). The transport unit 12 is controlled so as to be transported to the side). At this time, the conveyance amount by the conveyance roller 121 and the conveyance amount by the discharge roller 122 are controlled to be the same amount. For example, when the diameters of the transport roller 121 and the discharge roller 122 are the same, they are rotated by the same angle. Thereby, the position shift of the media A in the Y direction can be suppressed.
In this embodiment, as shown in FIG. 9, an example in which both the transport roller 121 and the discharge roller 122 are driven is shown, but the present invention is not limited to this. For example, with the transport roller 121 stopped, the first drive roller 121A and the first driven roller 121B sandwich and position the medium A, and only the discharge roller 122 is driven to apply tension along the Y direction. May be. Alternatively, the discharge roller 122 may be stopped and the transport roller 121 may be driven.
By performing the processing in step S6 as described above, even if there is unevenness along the Y direction with respect to the medium A, the unevenness can be stretched and flattened, and the flatness of the medium A can be further improved. It becomes possible.

FIG. 10 is a diagram illustrating a state in which the first movement holding plate 163 and the second movement holding plate 164 are moved in the platen 16 and the intake through hole 167E1 is opened by the shutter 167E2.
After step S8, the measurement control means 154C moves the shutter 167E2 to open the intake through hole 167E1 as shown in FIG. 10 (step S7; contact step). As a result, the medium A is sucked together with the air from the central suction hole 162B through the intake through hole 167E1, and the medium A is brought into close contact with the central holding plate 162. At this time, the unevenness of the medium A is stretched by step S5 and step S6, and the flatness of the medium A is maintained at a high level, so that the medium A is closely adhered to the center holding plate 162.

Thereafter, the scanning control means 154A moves the carriage 13 to the + X side (step S8). Here, the carriage 13 is moved in the X direction by, for example, a uniform linear motion. Therefore, the position of the measurement position R by the colorimeter 17 can be easily calculated based on the movement speed of the carriage 13 and the elapsed time from the start of movement.
Then, the measurement control unit 154C determines whether or not the calculated measurement position R has moved onto the color patch of the medium A held on the central holding plate 162 (step S9). If it is determined No in step S9, the process returns to step S7 and the carriage 13 continues to move.
On the other hand, when it is determined Yes in step S9, the measurement control unit 154C turns on the light source 171A and performs spectroscopic measurement on the color patch (step S10; measurement step).
In this spectroscopic measurement, the measurement control means 154C sequentially switches the drive voltage to the electrostatic actuator 56 of the wavelength variable interference filter 5 based on the V-λ data stored in the memory 153, for example, in the visible light range from 400 nm to 700 nm. Measured values for 16 bands of measurement wavelengths with an interval of 20 nm.

Thereafter, the measurement control means 154C determines whether there is an unmeasured color patch (step S11).
When it is determined Yes in step S11, the measurement control unit 154C stops the driving of the intake fan 169A (step S12) and returns to step S2. Then, the scanning control unit 154A controls the transport unit 12 so that the medium A is transported to the line corresponding to the next color patch at the measurement position R in the colorimeter 17, and spectral measurement is performed on the color patch on the printing surface A1. To implement.

When it is determined No in step S11, the measurement control unit 154C stops the suction fan 169A (step S13) and turns off the light source 171A (step S14).
Thereafter, the colorimetric calculation means 154D of the control unit 15 performs a colorimetric process based on the calibration reference value stored in the memory 153 and the measured value for each color patch (step S15). Specifically, the colorimetric calculation means 154D is based on the measured value for each measurement wavelength of each color patch and the measured value (calibration reference value) of a calibration reference object (such as a white plate) measured in advance. Then, the reflectance of each color patch for each measurement wavelength is calculated, and based on the calculated reflectance, a colorimetric value (for example, XYZ value, L ^* a ^* b ^* value, etc.) is calculated and stored in the memory 153. . The calibration unit 154E updates the print profile data stored in the memory 153 based on the color measurement result of each color patch.

[Operational effects of this embodiment]
In the printer 1 of the present embodiment, a colorimeter 17 that performs colorimetry on the printing surface A1 of the medium A, and a platen 16 that holds the medium A in a state where tension is applied to the medium A along the printing surface A1. It is equipped with.
In such a configuration, the tension along the first surface is applied to the medium A, so that even when the medium A has irregularities due to wrinkles, bends, undulations, etc., the irregularities are stretched flat by the tension. can do. Here, a certain level of flatness can be ensured just by sucking the medium A toward the platen 16 side. In this case, the medium A may be sucked by the platen 16 in the presence of wrinkles, etc. It cannot be secured. In contrast, in the present embodiment, as described above, by applying tension to the medium A, high flatness can be ensured, and the measurement accuracy is affected by slight unevenness ( In color measurement, it is possible to perform measurement with high measurement accuracy.

In the present embodiment, a carriage moving unit 14 that moves the carriage 13 on which the colorimeter 17 is mounted along the X direction is provided, and the medium A is held on the platen 16 by being applied with a tension along the X direction. Is done.
In the present embodiment, scanning measurement is performed by performing spectroscopic measurement by the colorimeter 17 while moving the carriage 13 in the X direction. At this time, since tension is applied in the X direction, which is the scanning direction, if there are irregularities such as wrinkles, deflections, and undulations along the X direction, the measurement accuracy of the scanning measurement decreases. On the other hand, in the present embodiment, since the tension along the X direction is applied to the medium A as described above, the unevenness along the X direction can be suitably improved by the tension, and the measurement accuracy of the scanning measurement can be improved.

In the present embodiment, the platen 16 includes a first movement holding plate 163 that sucks the medium A, and first suction portion moving means 163C that moves the first movement holding plate 163 along the X direction.
In such a configuration, after the medium is sucked by the first moving holding plate 163, tension is applied to the medium by moving the first moving holding plate 163 along the X direction by the first suction portion moving means 163C. To do. At this time, since the medium A is sucked by the first movement holding plate 163, even if the movement amount of the first movement holding plate 163 is too large, the medium A slides on the surface of the first movement holding plate 163. The medium A can be prevented from being damaged without excessive tension being applied to the medium A.

In the present embodiment, a second movement holding plate 164 is provided in addition to the first movement holding plate 163, and the second movement holding plate 164 is moved to the opposite side of the first movement holding plate 163, so that the media A tension is applied to A.
When tension is applied to the medium A using only the first movement holding plate 163, it is necessary to increase the movement amount of the first movement holding plate 163. On the other hand, in this embodiment, the 1st movement holding | maintenance board 163 and the 2nd movement holding | maintenance board 164 are provided, and these both are moved to the direction which mutually spaces apart. In such a configuration, the amount of movement of each of the first movement holding plate 163 and the second movement holding plate 164 can be reduced.
In addition, it is conceivable that the −X side of the medium A is fixed by a fixing member such as a clip and the first moving holding plate 163 is moved to the + X side to apply tension to the medium A. The structure for fixing the medium A by the fixing member is complicated. On the other hand, the configuration can be simplified by providing the second movement holding plate 164 for sucking the medium A as in the present embodiment.

In the present embodiment, the first movement holding plate 163 and the second movement holding plate 164 are moved by the same movement amount xm in a direction away from each other.
Thereby, since the medium A is pulled to the + X side and the −X side with the same force, the tension acting on the medium A is balanced, and the movement (position shift) of the medium A can be suppressed. Therefore, the measurement area of the medium A held on the central holding plate 162 can suppress the deviation in the X direction, and high-precision measurement can be performed without hindering the spectroscopic measurement by the colorimeter 17.

In the present embodiment, the first movement holding plate 163 has a first movement holding surface 163A, and includes a side suction hole 163B penetrating the first movement holding plate 163 from the first movement holding surface 163A. .
In such a configuration, by sucking the medium A mainly with the air from the side suction hole 163B, the medium A can be brought into close contact with the first moving holding plate 163, and the configuration can be simplified.
The same applies to the second movement holding plate 164, and a side suction hole 164B penetrating from the second movement holding surface 164A through the second movement holding plate 164 is provided, and the medium A together with air is supplied from the side suction hole 164B. Suction. Therefore, the medium A can be adhered and held on the second moving holding plate 164 with a simple configuration.

In the present embodiment, the first suction part moving unit 163C includes a biasing member 164C4 that biases the first movement holding plate 163 to the −X side, and a solenoid 163C1 that moves the first movement holding plate 163 to the + X side. It has.
In such a configuration, the first movement holding plate 163 can be moved with a simple configuration. The same applies to the second suction part moving means 164C.

In this embodiment, the tension along the Y direction is applied to the medium A by the transport roller 121 and the discharge roller 122 of the transport unit 12.
For this reason, even when the medium A has unevenness along the Y direction, the unevenness can be extended and flattened by the above configuration, the flatness of the medium A can be further improved, and the medium A can be more accurately Spectroscopic measurements can be performed.
Further, since the tension in the Y direction can be applied to the medium A using such a transport unit 12, a configuration for separately applying the tension in the Y direction can be eliminated, and the configuration can be simplified.

In the present embodiment, a central holding plate 162 having a central holding surface 162A that holds an area for performing colorimetry by the colorimeter 17 is provided, and the medium A is sucked into the central holding plate 162, whereby the medium A is held in the central holding surface Adhere to 162A.
Therefore, the medium A can be brought into close contact with the center holding plate 162 after applying tension to the medium A, and the flatness of the measurement area (area where the color patch is formed) of the medium A can be obtained. Can be increased, and more accurate spectroscopic measurement can be performed.
Further, since the medium A is sucked and brought into close contact with the central holding plate 162, there is no need to provide a pressing member or the like for pressing the medium A toward the platen 16 on the printing surface A1 side of the medium A, for example. That is, there is no hindrance in performing the spectroscopic measurement by the colorimeter 17, and the spectroscopic measurement can be performed efficiently.

  In the present embodiment, the center holding plate 162 has a center suction hole 162B penetrating from the center holding surface 162A through the center holding plate 162, and sucks the medium A together with air so that the medium A adheres to the center holding surface 162A. Accordingly, the medium A can be brought into close contact with the center holding plate 162 with a simple configuration.

  In the present embodiment, the central suction hole 162 </ b> B and the side suction holes 163 </ b> B and 164 </ b> B communicate with each other via the air collection chamber 168. Therefore, when the intake fan 169A of the duct 169 connected to the air collecting chamber 168 is driven, the medium A can be sucked together with air from the central suction hole 162B and the side suction holes 163B and 164B. Such a configuration simplifies the configuration and saves energy compared to a configuration in which intake fans corresponding to the central suction holes 162B, the side suction holes 163B, and the side suction holes 164B are provided. Can be planned.

In the present embodiment, the back plate 167E of the first partial intake chamber 167B1 that communicates with the central suction hole 162B includes an intake through hole 167E1 that communicates with the air collection chamber 168 and a shutter 167E2 that opens and closes these intake through holes 167E1. I have.
Therefore, the suction of the medium A in the central suction hole 162B can be controlled by opening and closing the intake through hole 167E1 by the shutter 167E2.
That is, in the tension applying step, if the measurement area of the medium A is in close contact with the center holding plate 162, the contact force becomes resistance when the tension is applied, and the unevenness is not properly stretched. There is a risk that the flatness may decrease. On the other hand, by closing the intake through hole 167E1 with the shutter 167E2, the above-described resistance is not related to the measurement region of the medium A, and the unevenness can be suitably extended by the tension.
Further, when the adhesion step is performed before the measurement step, the suction through hole 167E1 is opened by the shutter 167E2, and the measurement area of the medium A is sucked by the central holding plate 162, the medium A flattened by the tension is centered. It is brought into close contact with the holding plate 162. Further, since the media A is kept in close contact with the central holding surface 162A, which is a flat surface, the media A can be prevented from being lifted, so that the flatness can be further improved. Thereby, in the measurement step, it becomes possible to carry out a more accurate spectroscopic measurement.

  Further, in the present embodiment, the printer 1 includes the printing unit 18, and an image printed on the medium A by the printing unit 18 can be measured by the colorimeter 17 without moving the medium A.

[Other Embodiments]
Note that the present invention is not limited to the above-described embodiments, and the present invention includes configurations obtained by modifying, improving, and appropriately combining the embodiments as long as the object of the present invention can be achieved. Is.

In the above embodiment, a configuration in which the duct 169 is provided in the air collecting chamber 168 and the intake fan 169A provided in the duct 169 is driven to suck the medium A from each of the suction holes 162B, 163B, 164B is illustrated. .
In contrast, the air collection chamber 168 may be provided with an exhaust port, and the exhaust port may be provided with an intake fan. Further, although the configuration example in which air is sucked by the intake fan 169A is shown, a configuration in which air is sucked by a pump or the like may be used.

Moreover, it is good also as a structure as shown in FIG.
FIG. 11 is a diagram illustrating a schematic configuration of a platen according to a modification of the present embodiment. In FIG. 11, the supply side end 165 and the media holding surface 166A are not shown.
That is, like the platen 16A shown in FIG. 11, the first air collection chamber 168C1 corresponding to the first partial intake chamber 167B1, the second air collection chamber 168C2 corresponding to the second partial intake chamber 167B2, and the third partial intake chamber 167B3. It is good also as a structure in which the 3rd air collection chamber 168C3 corresponding to is provided. These air collection chambers 168C1, 168C2, and 168C3 are not communicated and are independent of each other. In this case, a first intake fan 168D1 is provided in the first air collection chamber 168C1, a second intake fan 168D2 is provided in the second air collection chamber 168C2, and a third intake fan 168D3 is provided in the third air collection chamber 168C3.
In such a configuration, by controlling the driving of the first intake fan 168D1, the suction of the medium A in the central suction hole 162B can be controlled without providing the shutter 167E2. Further, if the rotation speed of the first intake fan 168D1 is controlled, the suction force for sucking the medium A can also be controlled.
Further, by controlling the second intake fan 168D2 and the third intake fan 168D3, the suction force at the side suction holes 163B and the side suction holes 164B can be controlled.

FIG. 12 is a diagram showing a schematic configuration of a platen 16B in still another modification of the present embodiment.
In the above embodiment, the shutter 167E2 is provided only in the portion corresponding to the first partial intake chamber 167B1 of the back plate 167E. However, as in the platen 16B shown in FIG. 12, for example, each partial intake chamber 167B1, 167B2, 167B3 Correspondingly, shutters 167E2, 167E3, and 167E4 may be provided.
In this case, by controlling the shutters 167E3 and 167E4, the suction force at the side suction hole 163B and the side suction hole 164B can be controlled.

In the above embodiment, a pair of first suction portions are provided across the central holding plate 162, that is, the first moving holding plate 163 is provided on the + X side of the central holding plate 162, and the second movement is provided on the −X side. Although the holding plate 164 is provided, the present invention is not limited to this.
For example, it is good also as a structure as shown in FIG. FIG. 13 is a diagram showing a schematic configuration of a platen 16C in still another modification of the present embodiment.
That is, the first suction portion may be provided only on one side of the central holding plate 162 along the X direction. The example shown in FIG. 13 is a configuration example in which only the second movable holding plate 164 is provided as the first suction portion of the present invention. In FIG. 13, since the structure of the 1st movement holding | maintenance board 163 and the 1st suction | inhalation part moving means 163C becomes unnecessary, a structure can be simplified.
In this case, if the medium A is sucked by the second movement holding plate 164 and the second movement holding plate 164 is moved to the −X side, the medium A may also move to the −X side. Therefore, for example, it is preferable to provide a positioning member for positioning the medium A on a part of the central holding plate 162 (for example, the + X side end). Examples of the positioning member include a pressing member that presses the media A and the platen 16 side, a clip that grips one end of the media A, and the like.

In the above embodiment, the side suction holes 163B provided in the first moving holding plate 163, the side suction holes 164B provided in the second moving holding plate 164, and the central suction holes 162B provided in the central holding plate 162 are used. In the above, the configuration in which the medium A is sucked is illustrated, but the present invention is not limited to this.
For example, a configuration in which an electrode plate is arranged on each of the first moving holding plate 163, the second moving holding plate 164, and the central holding plate 162, and the medium A is sucked by applying a voltage to the electrode plate (electrostatic chuck). May be used. In this case, the porous medium A can be suitably sucked.

In the above embodiment, the configuration in which the medium A is attracted to the first movement holding plate 163 and the second movement holding plate 164 is exemplified, but the present invention is not limited to this.
FIG. 14 is a cross-sectional view showing a schematic configuration of a platen 16C in still another modification of the present embodiment.
As shown in FIG. 14, the first movement holding plate 163 is provided with first fixing means 163D for fixing one end of the medium A on the + X side, and the second movement holding plate 164 is provided with one end on the −X side of the medium A. It is good also as a structure which provides the 2nd fixing means 164D to fix. The first fixing unit 163D and the second fixing unit 164D may be, for example, a pressing member that presses the medium A toward the platen 16 or may be a clip that holds the end of the medium A.
Even in such a configuration, if the first movement holding plate 163 and the second movement holding plate 164 are moved away from each other, a tension acting in the X direction can be applied to the medium A. Unevenness such as bending and swell can be extended to make a flat surface.

  However, in this case, depending on the amount of movement of the first movement holding plate 163 and the second movement holding plate 164, the medium A may be damaged. Therefore, the medium A may be fixed on one of the first movement holding plate 163 and the second movement holding plate 164, and the medium A may be sucked on the other side.

In the above embodiment, the example in which the tension along the Y direction is applied to the medium A by controlling the driving of the transport roller 121 and the discharge roller 122 has been described, but the present invention is not limited thereto.
FIG. 15 is a diagram showing a schematic configuration of a platen 16D in still another modification of the present embodiment.
As shown in FIG. 15, the third moving holding plate 160 may be arranged on the + Y side of the central holding plate 162. The third movement holding plate 160 has a suction hole 160B, for example, like the first movement holding plate 163 and the second movement holding plate 164, and is provided to be movable along the Y direction. In such a configuration, the medium A is sucked together with air from the suction hole 160B, and the + Y side of the measurement area of the medium A is brought into close contact with the third movement holding plate 160. Then, the upstream side (−Y side) of the medium A is fixed by the transport roller 121, and the third movement holding plate 160 is moved to the downstream side (+ Y side). Thus, similarly to the first movement holding plate 163 and the second movement holding plate 164, the medium A is pulled in the Y direction while being held by the third movement holding plate 160, and tension along the Y direction is applied. Is done.
In the example shown in FIG. 15, the configuration in which the third movement holding plate 160 is provided only on the + Y side of the center holding plate 162 is illustrated, but a fourth movement holding plate is further provided on the −Y side of the center holding plate 162. Tension along the Y direction may be applied to the media A by moving the third movement holding plate 160 and the fourth movement holding plate in directions away from each other.

In the said embodiment, although the movement amount xm of the 1st movement holding | maintenance board 163 and the 2nd movement holding | maintenance board 164 showed the example, it is not limited to this. Regarding the application of tension in the Y direction, the transport amount of the transport roller 121 and the transport amount of the discharge roller 122 are the same, but the present invention is not limited to this.
For example, when the positional deviation of the medium A is suppressed, the movement amount of the first movement holding plate 163 and the movement amount of the second movement holding plate 164 may be different, and the transport roller 121 and the discharge roller 122 may be different. The transport amount may be different.

As described above, the configuration for suppressing the positional deviation of the medium A includes a configuration in which a part of the media A is pressed to the platen 16 side by a pressing member, and a configuration in which the medium A is held by a clip or the like. However, when these pressing members and clips are provided, the movement of the carriage 13 and the spectral measurement by the colorimeter 17 may be obstructed.
On the other hand, the medium A may be positioned by sucking the medium A through the central suction hole 162B. However, when the medium A is sucked with respect to the center holding plate 162 in the tension applying step, it becomes difficult to stretch the unevenness generated in the medium A compared to the above embodiment. In such a case, for example, the suction force of the medium A in the side suction holes 163B and 164B is made larger than the suction force of the central suction hole 162B, and the first movement holding plate 163 and the second movement holding plate 164 are moved. The sliding of the media A may be suppressed. For example, if the configuration shown in the modification shown in FIG. 11 or FIG. 12 is used, the suction force at each suction hole 162B, 163B, 164B can be easily controlled, and can be set to different suction forces. .
Further, the amount of movement of the shutter 167E2 may be controlled to control the suction force in the central suction hole 162B. For example, in the tension applying step, half of the intake through holes 167E1 are closed, the medium A is sucked with a weak suction force, and the displacement of the media A is suppressed. In the measurement step, all the intake through holes 167E1 are opened. The medium A may be sucked with a strong suction force.

By the way, when the movement amount of the first movement holding plate 163 and the movement amount of the second movement holding plate 164 are the same amount, and the conveyance amount by the conveyance roller 121 and the conveyance amount by the discharge roller 122 are the same amount. Even in this case, the medium A may be displaced.
In such a case, the amount of movement of the first movement holding plate 163, the amount of movement of the second movement holding plate 164, the amount of rotation of the transport roller 121, the discharge roller is detected by detecting the positional deviation of the medium A in the tension applying step. The rotation amount of 122 may be controlled.
For example, a separate imaging device is provided on the carriage 13 to monitor the position of the reference mark printed on the medium A, and based on the moving direction and moving amount of the reference mark, the moving amount of the first moving holding plate 163, the second moving amount The movement amount of the movement holding plate 164, the rotation amount of the transport roller 121, and the rotation amount of the discharge roller 122 are increased or decreased. With such a configuration, it is possible to perform spectroscopic measurement with higher accuracy while suppressing the positional deviation of the medium A.

In the above embodiment, the colorimeter 17 in which the wavelength variable interference filter is incorporated is exemplified as the measuring instrument of the present invention, but the present invention is not limited to this.
As the measuring device, for example, various measuring devices for measuring information on the printing surface A1, such as various sensors for detecting the surface state of the printing surface A1 of the medium A, an imaging device for imaging the printing surface A1, and the like are used. it can.

In the above embodiment, an example in which tension is applied along the X direction that is the moving direction of the carriage 13 and the Y direction that is the conveying direction of the medium A has been described, but the present invention is not limited thereto. For example, the first moving holding plate is located on the + X side and + Y side of the central holding plate 162, the second moving holding plate is located on the + X side and −Y side of the central holding plate 162, and the second moving holding plate is located on the −X side and + Y side of the central holding plate 162. A fourth moving holding plate is disposed on the −X side and the −Y side of the three moving holding plates and the central holding plate 162. In the tension application step, the first moving holding plate, the second moving holding plate, the third moving holding plate, and the fourth moving holding plate are separated from each other, that is, separated from the center point of the central holding plate 162. Move in the direction you want. Even in such a configuration, the measurement area of the medium A held by the center holding plate 162 is extended in four directions, whereby the unevenness of the medium A can be extended and flattened.
Further, the direction of tension applied to the medium A may be, for example, only the X direction or only the Y direction. Moreover, you may change the tension | tensile_strength provision direction suitably according to the measurement direction by a measuring device.

  In the above-described embodiment, an example in which the measurement step is performed in the state in which the medium A is in close contact with the central holding plate 162 is shown in the close contact step, but the central suction hole 162B is not provided in the central holding plate 162, and the center The medium A may not be in close contact with the holding surface 162A. Even in this case, the tension is applied to the medium A by the tension applying means configured by the first moving holding plate 163, the second moving holding plate 164, the transport unit 12, and the like, so that the color measurement is not affected. In addition, the medium A can be maintained on a flat surface.

  In each of the above embodiments, the carriage 13 is moved in the X direction by the carriage moving unit 14, but the present invention is not limited to this. For example, by conveying the medium A in the X direction, the printing position by the printing unit 18 and the color measurement position by the colorimeter 17 may be relatively moved in the X direction. The same applies to the Y direction. For example, the carriage 13 may be moved in the Y direction.

  In addition, the specific structure for carrying out the present invention may be configured by appropriately combining the above-described embodiments and modifications within the scope that can achieve the object of the present invention, and may be appropriately changed to other structures and the like. May be.

  DESCRIPTION OF SYMBOLS 1 ... Printer (printing apparatus), 5 ... Variable wavelength interference filter, 12 ... Conveyance unit, 13 ... Carriage, 14 ... Carriage movement unit, 15 ... Control unit, 16, 16A, 16B, 16C, 16D ... Platen, 17 ... Measurement Color device (measuring device), 18 ... printing unit, 121 ... conveying roller, 121A ... first driving roller, 121B ... first driven roller, 122 ... discharge roller, 122A ... second driving roller, 122B ... second driven roller, 153 ... Memory, 154 ... CPU, 154A ... Scanning control means, 154B ... Print control means, 154C ... Measurement control means, 154D ... Colorimetric calculation means, 154E ... Calibration means, 160 ... Third movement holding plate, 160B ... Suction Hole 161, platen main body 162, central holding plate 162A, central holding surface, 162B ... Central suction hole, 163 ... first movement holding plate, 163A ... first movement holding surface, 163B ... side suction hole, 163C ... first suction part moving means, 163C1 ... solenoid, 163C2 ... movable core, 163C3 ... pin, 163C4 ... biasing member, 164 ... second movement holding plate, 164A ... second movement holding surface, 164B ... side suction hole, 164C ... second suction part moving means, 164C1 ... solenoid, 164C2 ... movable core, 164C3 ... pin, 164C4 ... biasing member, 166 ... media holding portion, 166A ... media holding surface, 166B ... opening, 166C ... plate support portion, 166C1 ... X side plate support portion, 167 ... intake chamber, 167A ... rib (167A1 ... first rib , 167A2 ... second rib), 167B ... partial intake chamber (167B1 ... first partial intake chamber, 167B2 ... second partial intake chamber, 167B3 ... Three-part intake chamber), 167C ... bottom portion, 167D ... front portion, 167E ... back plate, 167E1 ... intake through hole, 167E2, 167E3, 167E4 ... shutter, 167F ... side portion, 168 ... collecting chamber, 168A ... collecting air Room bottom, 168B ... side wall, 169 ... duct, 169A ... intake fan.

Claims (18)

A measuring instrument for measuring information on the first side of the media having the first side;
A tension applying unit that applies tension in the direction along the first surface to the medium having a region in which the measuring device performs measurement. The measuring apparatus according to claim 1,
Comprising first moving means for moving the measuring device along a first direction;
The tension applying unit includes a first tension applying unit that applies a tension along the first direction. The measuring apparatus according to claim 2,
The first tension applying means includes
A first suction part for sucking a second surface opposite to the first surface of the media;
And a suction part moving means for moving the first suction part along the first direction. The measuring device according to claim 3,
A pair of the first suction parts are provided along the first direction,
The measuring device characterized in that the suction part moving means applies at least one of the pair of first suction parts with respect to the other so that the tension is applied to the medium. The measuring apparatus according to claim 4, wherein
The suction device moving means applies the tension to the medium by separating both of the pair of first suction portions by the same amount. The measuring apparatus according to any one of claims 3 to 5,
The first suction part includes a first holding surface that holds the medium, and a first suction hole that is provided so as to penetrate the first suction part from the first holding surface and sucks the medium. A measuring device characterized by that. The measuring apparatus according to any one of claims 3 to 6,
The suction part moving means includes
A biasing member that biases the first suction part along the first direction;
And a moving mechanism for moving the first suction portion to the side opposite to the biasing direction of the biasing member. The measurement apparatus according to any one of claims 2 to 7,
The said tension | tensile_strength provision means contains the 2nd tension | tensile_strength provision means which provides the tension | tensile_strength along the 2nd direction which cross | intersects said 1st direction to the said medium. The measuring apparatus characterized by the above-mentioned. The measuring apparatus according to claim 8, wherein
The second tension applying unit includes a roller that conveys the medium along the second direction, and applies the tension along the second direction by operating the roller. . In the measuring device according to any one of claims 1 to 9,
A measuring apparatus comprising: a close contact means for bringing the medium into close contact with a second holding surface that holds the region where the measuring device performs measurement. The measuring device according to claim 10,
The said contact | adherence means is equipped with the 2nd suction part which attracts | sucks the area | region where the said measuring device of the said medium measures on the 2nd surface on the opposite side to the said 1st surface of the said media. The measuring apparatus characterized by the above-mentioned. The measuring device according to claim 11,
The second suction section includes a second suction hole that is provided so as to penetrate the second suction section from the second holding surface and sucks the media. The measuring device according to claim 12,
The tension applying means includes
A first holding portion that holds the medium, and a first suction portion that is provided on the first holding surface and has a first suction hole that sucks the media;
A suction part moving means for moving the first suction part,
The first suction hole and the second suction hole communicate with each other through an intake passage. The measuring device according to claim 13, wherein
An opening and closing member that opens and closes at least a part of the intake path communicating with the second suction hole;
The measuring device characterized in that when the tension is applied to the medium, the intake path is closed by the opening / closing member, and when the measurement by the measuring device is performed, the intake path is opened by the opening / closing member. . The measuring device according to any one of claims 1 to 14,
A printing unit that prints an image on the medium. A measuring method for measuring information on the first surface side of a medium having a first surface with a measuring instrument,
A tension applying step for applying tension in a direction along the first surface to the medium having a region where the measuring device performs measurement;
And a measuring step of measuring the region by the measuring device. The measurement method according to claim 16, wherein
A measurement method, comprising: an adhesion step of bringing the media into close contact with a holding surface that holds an area where the measuring device of the media performs measurement. The measurement method according to claim 17,
The contact step is performed after the tension applying step,
The measurement method is performed after the contact step.

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