Inkjet printing apparatus, inkjet printing method, and program

Abstract

This invention provides an inkjet printing apparatus, an inkjet printing method, and a program that enable both color measurement and efficient printing. [Solution] The inkjet printing apparatus of the present invention comprises a printing unit for producing printed materials, and an inline colorimetric unit for detecting a colorimetric chart in a colorimetric printout on which a colorimetric chart is printed. The colorimetric chart includes colorimetric patches and position patches. The inline colorimetric unit reads information other than the colorimetric value from the position patches while the colorimetric chart is waiting for color stabilization.

Description

Technical Field

[0001] The present invention relates to an inkjet printing apparatus, an inkjet printing method, and a program.

Background Art

[0002] Patent Document 1 describes an inkjet printing apparatus provided with a color measurement unit function. In such an apparatus, before color measurement, detection of the inclination of paper and the like is performed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When performing color measurement on a printed matter in an apparatus as described above, it is necessary to wait for the ink to dry and the color value to stabilize before color measurement. Therefore, the time from when the printed matter to be color - measured is printed until the acquisition of color - measurement data is long, and there is room for improvement in productivity.

[0005] The present invention has been made in view of the above situation. The problem to be solved by the present invention is to provide an inkjet printing apparatus, an inkjet printing method, and a program with high productivity.

Means for Solving the Problems

[0006] The above problems according to the present invention are solved by the following means.

[0007] 1. A printing unit that produces a printed matter, and an in - line color measurement machine that detects a color - measurement chart in the color - measurement printed matter on which the color - measurement chart is printed among the printed matters. The aforementioned colorimetric chart includes colorimetric patches and position patches, The inline colorimeter reads information other than the color measurement value from the position patch while the color of the color measurement chart is waiting to stabilize. Inkjet printing device.

[0008] 2. The paper discharge unit from which the printed material is discharged is provided separately from the inline colorimeter. The inkjet printing apparatus described in paragraph 1.

[0009] 3. The inline colorimeter is equipped with a position sensor that reads the position of the position patch, Other information than the aforementioned color measurement value is the distance of the position patch from the base point of the position sensor. The inkjet printing apparatus described in paragraph 1.

[0010] 4. Information other than the color measurement value is the distance from the base point position of the position sensor for each of the multiple position patches. The inkjet printing apparatus described in paragraph 3.

[0011] 5. The tilt value of the colorimetric chart is calculated based on the distance of the multiple position patches from the base point of the position sensor. The inkjet printing apparatus described in item 4.

[0012] 6. The starting position for color measurement is corrected based on the tilt value of the colorimetric chart. The inkjet printing apparatus described in item 5.

[0013] 7. If the slope value of the colorimetric chart is not within a predetermined range, it is determined that color measurement is impossible, and the color stabilization waiting period for the colorimetric chart is stopped. The inkjet printing apparatus described in item 6.

[0014] 8. The position patch does not also serve as the colorimetric patch. The inkjet printing apparatus described in paragraph 1.

[0015] 9. The position patch is located on the front side in the conveyance direction of the colorimetric printing material with respect to the colorimetric patch. The inkjet printing apparatus according to Item 8.

[0016] 10. The position patch also serves as the colorimetric patch. The inkjet printing apparatus according to Item 1.

[0017] 11. A printing process for producing a printed material, and a colorimetric process for detecting the colorimetric chart in the colorimetric printing material on which the colorimetric chart of the printed material is printed, and having, the colorimetric chart includes a colorimetric patch and a position patch, in the colorimetric process, during the color stability standby of the colorimetric chart, information other than the colorimetric value is read from the position patch. Inkjet printing method.

[0018] 12. A program that causes a computer in an inkjet printing apparatus including a printing unit that produces a printed material, an in-line colorimeter that detects the colorimetric chart in the colorimetric printing material on which the colorimetric chart of the printed material is printed, and a computer, to function as a control unit, the colorimetric chart includes a colorimetric patch and a position patch, the control unit causes the in-line colorimeter to read information other than the colorimetric value from the position patch during the color stability standby of the colorimetric chart. Program.

Effect of the Invention

[0019] According to the present invention, it is possible to provide an inkjet printing apparatus, an inkjet printing method, and a program with high productivity.

Brief Description of the Drawings

[0020] [Figure 1] It is a schematic configuration diagram of an embodiment of an inkjet printing apparatus. [Figure 2] This is a block diagram showing the functional configuration of one embodiment of an inkjet printing apparatus. [Figure 3] This is a diagram showing an example of an inline colorimeter. [Figure 4] This is a flowchart showing an example of a colorimetric chart. [Figure 5] This flowchart shows another example of a colorimetric chart. [Figure 6] This is a flowchart illustrating an example of the colorimetric process. [Modes for carrying out the invention]

[0021] The following description illustrates one or more embodiments of the present invention with reference to the drawings. The effects and features of the embodiments of the present invention will be understood from the following detailed description and drawings. The following detailed description and drawings are provided for illustrative purposes only and do not limit the scope of the present invention.

[0022] Figure 1 is a schematic diagram of one embodiment of the inkjet printing apparatus 1. Figure 2 is a block diagram showing the functional configuration of one embodiment of the inkjet printing apparatus 1.

[0023] As shown in Figures 1 and 2, the inkjet printing apparatus 1 of the present invention may include a paper feeding unit 2, a transport unit 3, a printing unit 4, an image scanning unit 5, a paper discharge unit 6, an inline colorimetric unit 7, and an overall control unit 8.

[0024] The paper feeding unit 2 stores the recording medium M. The paper feeding unit 2 has, for example, a tray. Examples of recording medium M include printing paper, fabric, sheet-like resin, etc. Examples of printing paper include plain paper, coated paper, etc.

[0025] As shown in Figure 1, the transport unit 3 includes, for example, a feeder board 31, a first transfer drum 32, a transport drum 33, a second transfer drum 34, and an unloading unit 35.

[0026] The feeder board 31 transports the recording medium M from the paper feeding unit 2 to the first transfer drum 32. The first transfer drum 32 holds one end of the recording medium M transported by the feeder board 31, picks it up, and transfers it to the transport drum 33.

[0027] The transport drum 33 is, for example, cylindrical. The side surface of the transport drum 33 serves as a transport surface that attracts and holds the recording medium M. With the recording medium M held on the transport surface, the transport drum 33 rotates in one direction around its central axis as the axis of rotation. As a result, the transport drum 33 transports the recording medium M, which is attracted and held on the transport surface, along the transport surface.

[0028] The printing unit 4 may have, for example, one or more head units 41. Each head unit 41 has one or more inkjet heads. The head unit 41 may have an ink ejection surface at a position facing the transport surface of the transport drum 33. The head unit 41 ejects ink onto the recording medium M held in the transport drum 33 at an appropriate timing corresponding to the rotation of the transport drum 33 to form an image and produce a printed material. The ink is not particularly limited, but for example, an ultraviolet-curing ink can be used.

[0029] In the inkjet printing apparatus 1 illustrated in Figure 1, four head units 41 are arranged at predetermined intervals, starting from the upstream side in the rotational direction of the transport drum 33. The four head units 41 correspond to, for example, four colors of ink: yellow, magenta, cyan, and black.

[0030] The printing unit 4 may have an ultraviolet irradiation unit downstream of the head unit 41 in the transport direction. If the ink is an ultraviolet-curable ink, the ultraviolet irradiation unit can cure the ink on the recording medium M by irradiating it with ultraviolet light.

[0031] The printing unit 4 performs printing jobs such as normal jobs and color measurement jobs using an inkjet method. A normal job is a printing job that produces a normal printed material P1 that is not subject to color measurement. A color measurement job is a printing job that produces a color measurement printed material P2 on which a color measurement chart 200 is printed.

[0032] The image scanning unit 5 illuminates the printed material with light from a light source and reads the reflected image in order to read information such as whether there are defects in the printed material and the location of nozzle defects. The image scanning unit 5 is composed of, for example, an inline sensor in which multiple detection elements are arranged along a direction perpendicular to the transport direction of the printed material (width direction). The image data read by the image scanning unit 5 is sent to, for example, the overall control unit 8.

[0033] The second transfer drum 34 holds and picks up one end of the printed material conveyed by the transport drum 33 and hands it over to the discharge unit 35. The discharge unit 35 is the discharge route for printed materials and transports the printed materials to the paper discharge unit 6 or the inline colorimetric unit 7. Specifically, the discharge unit 35 transports regular printed materials P1 produced in a regular job to the paper discharge unit 6 and colorimetric printed materials P2 produced in a colorimetric job to the inline colorimetric unit 7. The discharge unit 35 is composed of, for example, a belt, rollers, etc. The transport route in the discharge unit 35 may branch along the way as shown in Figure 1. The paper discharge unit 6 has, for example, a tray.

[0034] The inkjet printer 1 preferably has a separate paper discharge section 6 for ejecting printed materials, as shown in Figure 1, in addition to the inline colorimeter 7. This allows printed materials P1 to be discharged to the paper discharge section 6 even while the inline colorimeter 7 is waiting for color stabilization or performing color measurement. Therefore, if the next print job does not require colorimeter data, the next print job can be executed even while the colorimeter is waiting for color stabilization or performing color measurement. This improves productivity.

[0035] The inline colorimeter 7 is a device that detects the colorimeter chart 200 and is arranged inline with the inkjet printing device 1. Figure 3 is a configuration diagram showing an example of the inline colorimeter 7. As shown in Figure 3, the inline colorimeter 7 includes, for example, a colorimeter head 71, a moving means 72, and a transport means 73. The colorimeter head 71 may include a colorimeter sensor 71a and a position sensor 71b. The colorimeter sensor 71a optically detects and measures the color of the colorimeter patches 201. Colorimetering is the measurement of color information, such as measuring color values ​​such as L*a*b* values. As the colorimeter sensor 71a, for example, a spectrophotometer that spectrally measures the reflected light from the colorimeter patches 201 can be used. The position sensor 71b detects the position patches 202. Specifically, the position sensor 71b detects the distance of each position patch 202 from the base point position of the position sensor 71b. For example, position sensor 71b detects the distance Ta from the base position of position sensor 71b for the first position patch. Position sensor 71b also detects the distance Tb from the base position of position sensor 71b for the second position patch. The first and second position patches are position patches 202 that are aligned with each other in the FD direction. The first position patch is located in front of the second position patch in the FD direction. Position sensor 71b is mechanically mounted adjacent to, for example, colorimetric sensor 71a and is movable together with colorimetric sensor 71a. Position sensor 71b is, for example, a single-wavelength reflective optical fiber sensor or a reflective color sensor. Moving means 72 moves the colorimetric head 71 back and forth in the CD direction (Cross Direction). Transport means 73 transports the recording medium M in the FD direction (Feed Direction) perpendicular to the CD direction.

[0036] The inline colorimeter 7 may include a slope value calculation means 74, a colorimeter execution determination means 75, and a colorimeter start position correction means 76. The functions of the slope value calculation means 74, the colorimeter execution determination means 75, and the colorimeter start position correction means 76 are performed by a computer equipped with a CPU (Central Processing Unit), for example. The functions of the slope value calculation means 74, the colorimeter execution determination means 75, and the colorimeter start position correction means 76 may be performed by one computer, or by different computers. Furthermore, the functions of the slope value calculation means 74, the colorimeter execution determination means 75, and the colorimeter start position correction means 76 may be performed by the overall control unit 8, which will be described later, instead of the computer equipped in the inline colorimeter 7.

[0037] The tilt value calculation means 74 calculates the tilt value of the colorimetric chart 200 based on the distance of each of the multiple position patches 202 from the base point position of the position sensor 71b. For example, the tilt value calculation means 74 calculates the tilt value (Ta / Tb) of the colorimetric chart 200 based on distances Ta and Tb. If the colorimetric chart 200 is not tilted, the tilt value (Ta / Tb) is 1. If the colorimetric chart 200 is tilted clockwise, the tilt value (Ta / Tb) is greater than 1. If the colorimetric chart 200 is tilted counterclockwise, the tilt value (Ta / Tb) is less than 1. The tilt of the colorimetric chart 200 may be caused by misalignment during printing or during transport.

[0038] The color measurement execution determination means 75 determines that color measurement is impossible if the slope value of the color measurement chart 200 is not within a predetermined range. If the color measurement execution determination means 75 determines that color measurement is impossible, the inline color measurement unit 7 stops the color stabilization waiting for the color measurement chart 200.

[0039] The color measurement start position correction means 76 corrects the color measurement start position based on the tilt value of the color measurement chart 200. The color measurement start position is corrected in three patterns, for example, upward, in the center, and downward. Upward means a position towards the front in the FD direction. Center means the position in the center in the FD direction. Downward means a position towards the rear in the FD direction. For example, if the color measurement chart 200 is tilted counterclockwise by more than a predetermined threshold, the color measurement start position is corrected upward. For example, if the tilt value of the color measurement chart 200 is less than a predetermined threshold, the color measurement start position is corrected to the center. For example, if the color measurement chart 200 is tilted clockwise by more than a predetermined threshold, the color measurement start position is corrected downward.

[0040] The overall control unit 8 controls the operation of other functional components according to print image data, print settings, etc. The overall control unit 8 is a computer and includes, for example, a CPU (Central Processing Unit), RAM (Random Access Memory), and ROM (Read Only Memory). The CPU executes various control programs to drive and control the inkjet printer 1 and performs various calculations. RAM provides the CPU with a working memory space and stores temporary data. RAM may include non-volatile memory. ROM stores various control programs executed by the CPU, setting data, etc. Instead of ROM, rewritable non-volatile memory such as flash memory may be used.

[0041] Figures 4 and 5 show examples of a colorimetric chart 200, respectively. As shown in Figures 4 and 5, the colorimetric chart 200 may have a plurality of colorimetric patches 201 and a plurality of position patches 202. The plurality of colorimetric patches 201 may constitute a plurality of columns arranged in the CD direction and a plurality of rows arranged in the FD direction. The frontmost row of the plurality of rows becomes the first row. The front side refers to the front side in the transport direction (FD direction) of the colorimetric print P2. Each of the plurality of colorimetric patches 201 may have different color values.

[0042] As shown in Figure 4, the multiple position patches 202 may be located in front of the colorimetric print P2 in the transport direction of the colorimetric print. Alternatively, the multiple position patches 202 may be located side by side, spaced apart from each other in the CD direction. In the colorimetric chart 200 shown in Figure 4, the position patches 202 do not also serve as colorimetric patches 201. This separation of the position patches 202 from the colorimetric patches 201 makes it easier to control the reading of the position patches 202.

[0043] On the other hand, as shown in Figure 5, the position patch 202 may also serve as a colorimetric patch 201. In this case, the position patch 202 may constitute, for example, multiple columns arranged in the CD direction and multiple rows arranged in the FD direction together with other colorimetric patches 201. By having the position patch 202 also serve as a colorimetric patch 201, the number of independent position patches 202 can be reduced or eliminated, making it easier to increase the number of colorimetric patches 201 in a single colorimetric chart 200.

[0044] Figure 6 is a flowchart of an example of a color measurement flow. In the flowchart below, the inkjet printing apparatus 1 of the present invention performs steps S1 to S7 (step S7-1, step S7-2, or step S7-3) while the color measurement chart 200 is waiting for color stabilization. Color stabilization waiting means waiting until the color values ​​of the color measurement patch 201 stabilize. In the color measurement patch 201 printed by the inkjet method, for example, the color values ​​do not stabilize until the ink dries, so color stabilization waiting is necessary.

[0045] In step S1, the position sensor 71b detects the left edge position of the first position patch. The left edge position is the position of the edge of the position patch 202 on the left side in the direction of transport of the colorimetric print P2. From the left edge position of the first position patch, the distance Ta from the base position of the position sensor 71b for the first position patch is determined.

[0046] In step S2, the position sensor 71b detects the left edge position of the second position patch. From the left edge position of the second position patch, the distance Tb from the base position of the position sensor 71b to the second position patch is determined.

[0047] In step S3, the tilt value calculation means 74 calculates the tilt value of the colorimetric chart 200 based on the distance of the multiple position patches 202 from the base position of the position sensor 71b. Specifically, the tilt value calculation means 74 calculates the tilt value (Ta / Tb) of the colorimetric chart 200 based on distances Ta and Tb.

[0048] In step S4, the color measurement execution determination means 75 determines whether or not color measurement can be performed. Specifically, the color measurement execution determination means 75 determines that color measurement is possible if the slope value of the color measurement chart 200 is within a predetermined range, and determines that color measurement is impossible if the slope value of the color measurement chart 200 is not within the predetermined range. For example, a first threshold, which is the upper limit of the slope value for which color measurement can be performed, and a fourth threshold, which is the lower limit, are set from the size of one row of color measurement patch 201 in the FD direction and CD direction. The first threshold can be arbitrarily determined based on the size of the color measurement chart 200, etc., but for example it is 1.3. The fourth threshold can be arbitrarily determined based on the size of the color measurement chart 200, etc., but for example it is 0.7. The color measurement execution determination means 75 determines that color measurement is possible if the slope value is less than or equal to the first threshold and greater than or equal to the fourth threshold, and determines that color measurement is impossible if the slope value is greater than the first threshold or less than the fourth threshold. If the color measurement execution determination means 75 determines that color measurement is possible, the flow proceeds to step S5. If the color measurement execution determination means 75 determines that color measurement is not possible, the color stabilization waiting of the color measurement chart 200 is canceled, and the color measurement flow ends without color measurement being performed.

[0049] In steps S5 to S7 (step S7-1, step S7-2, or step S7-3), the color measurement start position correction means 76 corrects the color measurement start position based on the inclination value of the color measurement chart 200, as follows.

[0050] In step S5, the colorimetric start position correction means 76 determines whether the slope value is less than or equal to the first threshold and greater than or equal to the second threshold. The second threshold is, for example, less than the first threshold and greater than 1. The second threshold can be arbitrarily determined based on the size of the colorimetric chart 200, for example, 1.1. If the slope value is less than or equal to the first threshold and greater than or equal to the second threshold, the flow proceeds to step S7-1. If the slope value is not less than or equal to the first threshold and greater than or equal to the second threshold, the flow proceeds to step S6.

[0051] In step S6, the colorimetric start position correction means 76 determines whether the slope value is less than or equal to the third threshold and greater than or equal to the fourth threshold. The third threshold is, for example, less than 1 and greater than the fourth threshold. The third threshold can be arbitrarily determined based on the size of the colorimetric chart 200, for example, it is 0.9. If the slope value is less than or equal to the third threshold and greater than or equal to the fourth threshold, the flow proceeds to step S7-2. If the slope value is not less than or equal to the third threshold and greater than or equal to the fourth threshold, that is, if the slope value is less than the second threshold and greater than the third threshold, the flow proceeds to step S7-3.

[0052] In step S7-1, the color measurement start position correction means 76 sets the color measurement start position to the upper side. In step S7-2, the color measurement start position correction means 76 sets the color measurement start position to the center. In step S7-3, the color measurement start position correction means 76 sets the color measurement start position to the lower side.

[0053] After steps S7-1, S7-2, or S7-3, in step S8, color measurement is performed and the colorimetric sensor 71a measures the color information of the colorimetric patch 201. For example, first, the moving means 72 causes the colorimetric head 71 to scan in the CD direction from a set colorimetric start position. At this time, the colorimetric sensor 71a performs color measurement on the first row of the colorimetric patch 201. Once the color measurement for the first row is complete, the transport means 73 transports the colorimetric printout P2 one row in the FD direction. Next, the moving means 72 causes the colorimetric head 71 to scan in the CD direction. At this time, the colorimetric sensor 71a performs color measurement on the second row of the colorimetric patch 201. Once the color measurement for the second row is complete, the transport means 73 again transports the colorimetric printout P2 one row in the FD direction. These operations are repeated until the color measurement of all colorimetric patches 201 is complete, at which point the colorimetric flow is finished. Furthermore, the scanning direction of the colorimeter head 71 in the CD direction is, for example, from left to right for odd-numbered rows and from right to left for even-numbered rows. Also, if the starting position for color measurement is towards the top for odd-numbered rows, it will be towards the bottom for even-numbered rows, and vice versa.

[0054] As in the example above, in the inkjet printing apparatus 1 of the present invention, the inline colorimetric unit 7 reads information other than the colorimetric value from the position patch 202 while the colorimetric chart 200 is in color stabilization waiting state. The information other than the colorimetric value is, for example, the position of the position patch 202. Specifically, the information other than the colorimetric value may be the distance of the position patch 202 from the base point position of the position sensor 71b. Alternatively, the information other than the colorimetric value may be the distance of multiple position patches 202 from the base point position of the position sensor 71b. By the inline colorimetric unit 7 reading information other than the colorimetric value from the position patch 202 while the colorimetric chart 200 is in color stabilization waiting state, it becomes possible to start color measurement immediately after color stabilization waiting. This improves productivity.

[0055] The inkjet printing method of the present invention comprises a printing step in which a printed material is produced, and a color measurement step in which the color measurement chart 200 is detected in a color measurement printed material P2 on which the color measurement chart 200 is printed. As described above, the color measurement chart 200 includes a color measurement patch 201 and a position patch 202. As described above, in the color measurement step of the inkjet printing method of the present invention, information other than the color measurement value is read from the position patch 202 while the color measurement chart 200 is waiting to stabilize.

[0056] The program of the present invention is a program that causes the computer provided in the inkjet printing apparatus 1 described above to function as a control unit. The computer, functioning as a control unit through this program, causes the inline colorimeter 7 to read information other than the colorimeter value from the position patch 202 while the colorimeter chart 200 is waiting for color stabilization.

[0057] The above description and drawings are for illustrative purposes only regarding embodiments of the present invention and are not intended to limit the scope of the invention. The scope of the invention should be interpreted as described in the claims. [Explanation of symbols]

[0058] 1. Inkjet printing device 2 Paper feed section 3. Conveying section 31 Feeder board 32. First handover drum 33 Conveyor Drum 34. Second handover drum 35. Loading section 4 Printing Department 41 Head Unit 5. Image scanning unit 6. Paper output section 7. In-line colorimeter 71 Colorimeter head 71a Colorimeter 71b Position sensor 72 Means of Transportation 73 Conveying means 74. Means for calculating slope value 75. Color measurement execution determination means 76 Color measurement start position correction means 8. Overall Control Unit M recording medium P1 Normal printed matter P2 Printed matter for color measurement

Claims

1. The printing department, which produces printed materials, The system includes an inline colorimetric unit that detects the colorimetric chart in a colorimetric printout on which a colorimetric chart is printed, among the aforementioned printed materials. The aforementioned colorimetric chart includes colorimetric patches and position patches, The inline colorimeter reads information other than the colorimeter value from the position patch while the color of the colorimeter chart is waiting to stabilize. Inkjet printing device.

2. The paper discharge section from which the printed material is discharged is provided separately from the inline colorimeter. The inkjet printing apparatus according to claim 1.

3. The inline colorimeter unit includes a position sensor that reads the position of the position patch, Other information than the aforementioned color measurement value is the distance of the position patch from the base point of the position sensor. The inkjet printing apparatus according to claim 1.

4. The information other than the aforementioned color measurement value is the distance from the base point position of the position sensor for each of the multiple position patches. The inkjet printing apparatus according to claim 3.

5. The tilt value of the colorimetric chart is calculated based on the distance of multiple position patches from the base point of the position sensor. The inkjet printing apparatus according to claim 4.

6. Based on the tilt value of the colorimetric chart, the starting position for color measurement is corrected. The inkjet printing apparatus according to claim 5.

7. If the slope value of the colorimetric chart is not within a predetermined range, it is determined that color measurement is impossible, and the color stabilization waiting period for the colorimetric chart is stopped. The inkjet printing apparatus according to claim 6.

8. The aforementioned position patch does not also serve as the aforementioned colorimetric patch. The inkjet printing apparatus according to claim 1.

9. The position patch is located in front of the colorimetric print in the transport direction of the colorimetric print compared to the colorimetric patch. The inkjet printing apparatus according to claim 8.

10. The aforementioned position patch also serves as the aforementioned colorimetric patch. The inkjet printing apparatus according to claim 1.

11. The printing process in which printed materials are produced, The process includes a color measurement step of detecting the color measurement chart in a color measurement printout that has a color measurement chart printed on it, among the aforementioned printed materials. The aforementioned colorimetric chart includes colorimetric patches and position patches, In the color measurement process, while waiting for the color of the color measurement chart to stabilize, information other than the color measurement value is read from the position patch. Inkjet printing method.

12. A program for causing the computer in an inkjet printing apparatus to function as a control unit, comprising: a printing unit for producing printed materials; an inline colorimetric unit for detecting the colorimetric chart in a colorimetric printout on which a colorimetric chart is printed; and a computer. The aforementioned colorimetric chart includes colorimetric patches and position patches, The control unit causes the inline colorimeter to read information other than the colorimeter value from the position patch while the color of the colorimeter chart is waiting to stabilize. program.

Images