JP2009241468A - Method and apparatus for supporting control of printing color tone, and method and apparatus for managing printing color tone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for supporting the control of a printing color tone, and a method and an apparatus for managing a printing color tone, wherein an ink supply amount can be controlled so as to coincide with a matched color by easily and properly performing determination on printing color matching regardless of an observation environment. <P>SOLUTION: A pattern to be printed by a printer is projected as a target color pattern with a color tone of a print sample on a monitor screen, the color of printed matter is measured by a sensor, and the measured color value is applied to each device profile of the sensor and the monitor to project a detected color pattern with a measured color tone on the monitor screen. A simulated change amount of ink supply is applied to the device profiles to change the detected color pattern to a color pattern corresponding to the simulated change of the ink supply amount to project a simulation changed color patter on the monitor, whereby the determination on matching can be performed by referring the monitor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a support method and apparatus for print color control that makes a print color tone close to a target print sample, and a print color management method and apparatus.

  In a printing machine that controls the color tone of the printed matter while controlling the amount of ink supplied, visually check the results, and if the desired color cannot be printed, adjust the ink supply amount. It is necessary to operate to obtain a desired color. Usually, at the start of printing, there are many cases where the ink supply amount is not appropriate. In this case, the printing operator must perform color matching while adjusting the ink supply amount, and the operator requires skill, It was a big work burden. In addition, the printed paper is damaged until the color matching is completed.

Therefore, for example, even an inexperienced operator has proposed a color tone control technique that enables a printed matter to be approximated to a print target with a minimum amount of damaged paper and a reduced color matching time (see Patent Document 1). ).
In this technique, as shown in FIG. 16, a monitor display (display device, hereinafter simply referred to as a monitor) 102 color-matched so as to display an image that matches the color of the printed matter printed by the printing press 101, On this display device 102, a proof image 102a printed from the print data using an ICC profile that matches the printing conditions is displayed in a simulation so as to change according to the adjustment of the ink supply amount in the printing machine 101. When the color of the displayed image is changed so as to match the color of the printed matter 103, the color tone control device 100 is calculated from an arithmetic device (device main body) 104 that predicts the adjustment amount of ink necessary to match both colors. Is configured. The printing machine 101 is equipped with an ink key 101a for adjusting the ink supply amount.

  As shown in FIG. 17, the color tone control apparatus projects the color of the proof print (proof image, print sample) 102a on the monitor 102 (step a10), performs printing (step a20), and is obtained by this printing. The operator visually determines whether the color of the printed product 103 matches the color of the proof 102a displayed on the monitor 102 (step a30).

  As a result, if the color of the printed product 103 matches the color of the proof printed on the monitor, the color tone control is finished, and normal printing is carried out as it is. On the other hand, if the color of the printed material 103 and the color of the proof printed on the monitor do not match, the simulation operation of the ink key 101a of the printing machine 101 (not the actual operation of the ink key 101a) is performed, and the calibration displayed on the monitor is displayed. The printing color is adjusted so as to match the color of the printed material 103 (step a40). At this time, a correspondence table between the ink key opening and the pattern density is used. When the ink key 101a is operated, the pattern density that changes in accordance with this operation is read from the correspondence table, and the color of the monitor display is changed. A color corresponding to the simulation operation is displayed on the monitor.

  On the other hand, the relationship between the color of the monitor display and the ink key opening is recalled, and using this, the ink key opening manipulated variable ΔK when operating the simulation key when the color of the monitor display is matched with the printed matter in step a40. Is calculated (step a50) and fed back to the actual opening of the ink key 101a of the printing press (step a60) so that the opening obtained by adding the above ΔK to the current key opening K (= K + ΔK).

Then, printing is performed with the feedback opening degree of the ink key 101a (= K + ΔK) (step a20), and the processing of steps a20 and a30 is performed. If the colors do not match, steps a40 to a60 and a20 and a30 are performed. Repeat the process.
JP 2007-301855 A

However, although the technique disclosed in Patent Document 1 has an advantage that a sensor (colorimeter) for detecting the color of a printed material is not required, there are the following problems.
The operator visually determines the color by comparing the actual color of the printed matter 103 with the color of the image displayed on the monitor 102, so that it is difficult to make an appropriate determination. That is, while the color of the printed material 103 is a reflection color, the color displayed on the monitor 102 is a transmission color, so it is difficult for humans to compare these different colors. In the case of reflection color, the hue changes depending on the illumination that is irradiated, but in the case of transmission color, the hue basically does not change when viewed from the screen, but the contrast between the two depends on the position and angle at which the monitor is viewed. The result will change. For this reason, matching between the monitor screen and the printed material is difficult, and it is difficult to make an appropriate judgment.

In addition, the simulation key operation is not linked to the actual ink key opening. To reflect the simulation key operation in the actual ink key opening adjustment, call the relationship between the monitor display color and the ink key opening. Therefore, it is necessary to calculate the ink key operation amount ΔK and drive the ink key. In this respect, a simpler configuration is also desired.
Also, the data for color matching (correspondence table between ink key opening and pattern density) is a pre-defined rule and does not take into account data updating for color matching accuracy.

In addition, the relationship between the ink supply amount and the color tone of printing changes depending on the environment around the printing press, the amount of dampening water, printing materials, etc. Even better if possible.
The present invention has been devised in view of such problems, and a printing color tone control support method and apparatus, a printing color tone management method, and a printing color tone management method, which are capable of making a print color matching determination more easily and appropriately. An object is to provide an apparatus.

  In order to achieve the above object, a printing color tone control support method according to the present invention includes a target color picture display step for projecting a picture to be printed by a printing machine on a monitor screen as a target color picture with a color tone of a printing sample, and the printing The printed matter printed by the machine is measured by a sensor, and the measured colorimetric value is applied to each device profile of the sensor and the monitor, and the detected color pattern is detected by the color tone measured by the sensor. The detected color picture display step projected on the screen having the same color development characteristics as the target color picture of the monitor, and the simulated change amount of the ink supply amount of the printing machine including the relationship between the ink supply amount and the color value And the target color picture of the monitor as a simulated change color picture by changing the detected color picture to a color tone according to the simulated change of the ink supply amount. Is characterized in that it includes a simulated modified color picture display step for projecting on a screen one color characteristic, the (claim 1).

In the target color pattern display step, it is preferable that the pattern data of the pattern to be printed is applied to each device profile of the print sample and the monitor and projected in the color tone of the print sample.
Alternatively, in the target color picture display step, an image obtained by measuring the color of the print sample with the sensor is preferably displayed on the screen of the monitor.

In the simulated changed color pattern display step, it is preferable that the simulated changed color pattern is displayed on a screen having the same color development characteristics as the target color pattern and the detected color pattern of the monitor.
The simulated change amount input operation member is an actual ink supply amount adjustment operation member of the printing press, and the simulated change color picture display step receives the information of the ink supply amount adjustment operation member and performs the simulated change. It is preferable to project a color picture on the screen of the monitor.

The parameter corresponding to the ink supply amount is preferably at least one of an ink key opening, an ink original roller rotation number, a number of calls of an ink call roller with respect to a plate cylinder rotation, and a discharge amount of a digital ink pump. Item 6).
It is preferable that the printing press is a sheet-fed printing press.
The printing color tone management method of the present invention implements the printing color tone control support method according to any one of claims 1 to 7 and is displayed on a screen having the same color development characteristic in the simulated change color pattern display step. The color that matches the color tone of the simulated change color pattern to the color tone of the target color pattern by manipulating the simulated change amount while comparing the simulated target color pattern and the simulated change color pattern And an alignment step (claim 8).

  Before starting printing by the printing machine, a picture to be printed by the printing machine is displayed on the screen of the monitor as a target color picture with a color tone of a printing sample, and the picture data of the picture to be printed is displayed on the printing machine and the monitor. The target image displayed in the pre-printing pattern display step for displaying the pattern to be printed on the printing machine as an assumed color pattern when the printing machine prints the pattern to be applied to each of the device profiles, and the pre-printing pattern display step A pre-color matching step of manipulating the simulated change amount while comparing the color pattern and the assumed color pattern to change the ink supply by simulation, and matching the color tone of the assumed color pattern to the color tone of the target color pattern, Prior to the start of printing, preset presets that preset the actual ink supply amount in accordance with the simulated change amount operated in the preliminary color matching step. Tsu and up, preferably further includes a (claim 9).

It is preferable that the simulated change color picture display step and the color matching step are performed after the printing machine is stopped after the printing by the printing machine.
It is preferable that the simulated change color picture display step and the color matching step are performed while continuing printing by the printing machine.
The device profiles of the printer, the sensor, and the monitor, or the device profiles of the printer, the sensor, the monitor, and the print sample are stored in advance in a database, and the color matching step and / or the event. It is preferable to update the corresponding device profile stored in the database based on the ink supply amount color-matched in the previous color matching step.

  The printing color tone control support device of the present invention includes a monitor and an image control unit that controls an image displayed on the screen of the monitor, and the image control unit is a color tone of a print sample of a pattern printed by a printing press. A target color pattern, a detected color pattern that is a color tone obtained by applying colorimetric values obtained by measuring the color of a printed matter printed by the printing press to the sensor and each device profile of the monitor, and ink supply of the printing press The simulated change amount of the amount is applied to each device profile of the printing machine and the monitor including the relationship between the ink supply amount and the color value, and the detected color pattern is changed to a color tone according to the simulated change of the ink supply amount. Control is performed so that the changed simulated color pattern is displayed on one screen of the monitor.

Preferably, the image control unit causes the pattern data of the pattern to be printed to act on each device profile of the print sample and the monitor, and displays it on the screen of the monitor in the color tone of the print sample. .
The image control unit preferably projects the simulated changed color pattern on a screen having the same color development characteristics as the target color pattern and the detected color pattern of the monitor.

The simulated change amount input operation member is an actual ink supply amount adjustment operation member of the printing press, and the image control unit receives the information of the ink supply amount adjustment operation member and displays the simulated change color pattern. It is preferable to project on the screen of the monitor.
The parameter corresponding to the ink supply amount is preferably at least one of an ink key opening, an ink original roller rotation number, a number of calls of an ink call roller with respect to a plate cylinder rotation, and a discharge amount of a digital ink pump. Item 17).

Preferably, the printing press is a sheet-fed printing press.
A printing color tone management apparatus according to the present invention includes the printing color tone control support apparatus according to any one of claims 13 to 18, the target color pattern displayed on the screen having the same color development characteristic, and the simulated change color. It has a color matching unit that manipulates the simulated change amount while comparing it with a pattern to change the ink supply amount in a simulated manner, and automatically matches the color tone of the simulated changed color pattern to the color tone of the target color pattern. It is characterized (claim 19).

  Before starting printing by the printing machine, the image control unit projects a picture to be printed by the printing machine on a screen of the monitor as a target color picture in a color tone of a printing sample, and displays the pattern data of the picture to be printed. The printing machine and the monitor are configured to project the pattern to be printed by the printing machine by acting on the device profiles of the printing machine and the monitor, and the color matching unit is projected to the monitor. The simulated change amount is manipulated while comparing the target color pattern and the assumed color pattern, and the ink supply amount is simulated and the color tone of the assumed color pattern is automatically matched to the color tone of the target color pattern. And a preset unit that presets the actual ink supply amount according to the simulated change amount operated by the color matching unit before the start of printing. Rukoto Preferably (claim 20).

Preferably, the color matching unit performs a process of automatically matching the color tone of the simulated changed color pattern to the color tone of the target color pattern by stopping the printing press after printing by the printing press (claim 21). .
It is also preferable that the color matching unit performs a process of automatically matching the color tone of the simulated changed color picture to the color tone of the target color picture while continuing printing by the printing machine (claim 22).

  The device profiles of the printing machine, the sensor, and the monitor, or the device profiles of the printing machine, the sensor, the monitor, and the print sample are stored in advance in a database and color-matched by the color matching unit. It is preferable that a device profile update unit for updating a corresponding device profile stored in the database based on an ink supply amount is provided.

  According to the printing color tone control support method (claim 1) and apparatus (claim 13) of the present invention, the simulated change amount of the ink supply amount of the printing press includes the relationship between the ink supply amount and the color value. In addition, by acting on each device profile of the monitor, a simulated changed color pattern is obtained by changing the detected color pattern to a color tone according to the simulated change of the ink supply amount, and this simulated changed color pattern is the same as the target color pattern of the monitor Projected on the screen of coloring characteristics. In this way, by displaying the simulated change color pattern and the target color pattern on the screen with the same color development characteristics, both patterns are completely unaffected by ambient light disturbance, and the color depending on the position and angle of viewing the monitor. The difference is as small as possible.

  Therefore, as in the printing color tone management method (claim 8), the simulated change color pattern is compared with the target color pattern while comparing the simulated change color pattern and the target color pattern projected on the screen having the same color development characteristics by the operator's vision. It is possible to appropriately make a simulated change so that In addition, as in the printing color tone management apparatus (claim 19), the operator can also perform simulations that are displayed on a screen having the same color development characteristics when automatically performing color matching so that the simulated change color pattern approaches the target color pattern. The color tone of printing can be grasped while visually checking the changed color pattern and the target color pattern.

In particular, since the simulated change color pattern is generated based on the detected color pattern obtained by measuring the color of the printed matter printed by the printing press with a sensor, the simulated change color pattern can be accurately projected on the monitor screen. From this point, it is possible to appropriately make a simulated change.
In addition, when a picture to be printed on a printing press is projected as a target color picture in the color tone of the print sample, the pattern data of the picture to be printed is applied to each device profile of the print sample and the monitor, thereby ensuring the color tone of the print sample. It can be projected (claims 2 and 14).

Alternatively, if an image obtained by measuring the color of the print sample with the sensor is displayed on the screen of the monitor, the pattern printed by the printing machine can be easily and reliably displayed as the target color pattern in the color tone of the print sample (claim). Item 3).
By projecting the simulated change color pattern together with the target color pattern and the detected color pattern on the screen of the same color development characteristic of the monitor, it is possible to visually compare the detected color pattern and the simulated change color pattern obtained by simulating and changing it. The simulation change operation can be appropriately performed while referring to the screen (claims 4 and 15).

If the input operation member of the simulated change amount is the actual ink supply amount adjustment operation member of the printing press, by performing the actual ink supply amount adjustment operation of the printing press, even if the actual printing is not performed, The operator can adjust the ink supply amount appropriately and easily without a sense of incongruity by the actual ink supply amount adjustment operation (claims 5 and 16).
When managing color tone, before starting printing, the target color is assumed as the assumed color pattern when the pattern data to be printed is applied to each device profile of the printer and monitor and the pattern to be printed by the printer is printed. By projecting together with the pattern, pre-color matching that matches the color tone of the assumed color pattern to the color tone of the target color pattern, and presetting the actual ink supply amount according to the simulated change amount operated by pre-color matching, In actual printing, the color tone of the picture printed from the beginning of printing can be brought close to the target color tone (target color picture), and more appropriate printing can be carried out more quickly, reducing printing time and reducing waste paper. (Claims 9 and 20).

If the simulated change color pattern display and color matching are performed after the printing machine starts printing, the printing machine is stopped, and the reduction of waste paper can be further promoted (claims 10 and 21).
When the printing machine is a sheet-fed printing machine (Claims 7 and 18), usually, after printing a certain number of copies, the printing machine is stopped and the printing state is confirmed (including registration and color tone confirmation). When applied to such a printing mode, the printing state can be checked efficiently, the number of times of stopping the printing press can be reduced, and the printing time and paper loss can be reduced.

  In addition, when such a simulated change color pattern display and color matching is performed while continuing printing by a printing machine, color matching is performed by simulated change so as to approach the target color pattern based on the detected color pattern obtained during printing. It will be. The detected color pattern can be updated at a predetermined cycle, and it is conceivable to operate the actual ink supply amount so as to approach the target color pattern while viewing the detected color pattern obtained in substantially real time. However, since the actual ink supply amount changes with a certain response delay after the change operation, if the response delay is ignored and an attempt is made to bring the real-time detected color pattern closer to the target color pattern, the change operation will be excessive. As a result, it may take time for the ink supply amount to be appropriate. In this regard, color matching by simulated change will result in an optimal change operation for the obtained detected color pattern, and even if printing during this simulated change operation becomes waste paper, If the actual ink supply amount is adjusted based on this, the color tone of the printed matter can be made appropriate with a certain response time, and as a result, it is expected to suppress the increase in the amount of waste paper and the printing time. (Claims 11 and 22).

  In addition, device profiles for printing presses, sensors, monitors, and print samples are stored in advance in the database, and the corresponding device profiles stored in the database are updated based on the color-matched ink supply amounts. Relationships can be created and color tone control can be performed more appropriately (claims 12 and 23).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
1 to 12 show a printing color tone control support apparatus and method according to a first embodiment of the present invention, which will be described with reference to these drawings.
(Device configuration)
First, a print color tone control support apparatus according to the present embodiment will be described.

The printing color tone control support apparatus can be applied to various printing machines such as an offset rotary printing machine and a sheet-fed printing machine. In the present embodiment, a case of applying to a sheet-fed printing machine will be described.
As shown in FIGS. 1 and 3, the printing color tone control support device includes a design color tone management device main body (a design color tone management terminal or a calculation device) 11 which is a main element of the design color tone management device, and the device main body 11. A monitor display (image display device, hereinafter simply referred to as a monitor) 12 for displaying an image based on information from the sensor, a sensor (colorimeter, here, a scanner) 14 for measuring the color of the printed matter 15, and a database 31-33.

  In this embodiment, as shown in FIG. 2, a touch panel 19a is attached to the screen 12a of the monitor 12, and the ink supply zone is displayed for each of the first to third images on the screen 12a. When the ink supply zone is selected by touching, the switch 19b is displayed on the touch panel 19a, and the displayed colors [CYAN (blue), BLUE (blue), MAGENTA (red), RED (red), YELLOW) are displayed. By operating the (yellow), GREEN (green)] change button, the ink amount in the ink supply zone can be commanded to increase or decrease.

Therefore, in the present embodiment, information on the ink supply state adjustment operation (actually the ink key opening change operation) is input to the apparatus main body 11 through the switch 19b of the touch panel 19a. You may make it perform adjustment operation of an ink supply state through the ink key opening operation of the sheet | seat panel equipped.
The apparatus main body 11 includes an ink supply amount calculation unit 11a and an image information generation unit 11b having a CMS conversion unit 11c. Note that the image information generation unit 11b generates an image to be displayed on the screen of the monitor 12, outputs the generated image information to the monitor 12, and causes the monitor 12 to display the image. At this time, if the pattern data to be displayed on the monitor 12 is ink color information (k, c, m, y), the CMS converter 11c performs CMS conversion to monitor color information.

  The apparatus main body 11 receives each ink color [k (black; black), c (cyan; indigo), m (magenta; red), y (yellow; yellow) from the pattern (plate making) data from the plate making system 20. )], The pattern information (gradation information, dot area ratio information) c, m, y, k of each part of the printing pattern of each ink color is obtained as the separation pattern data (plate making data, image data, etc.), At the start of printing, a preset command is given in advance for the ink supply state of the printing press 1 based on the correspondence between preset pattern data (gradation, halftone dot area ratio) and ink supply amount.

  The printing press 1 is provided with adjustment factors for adjusting the ink supply state, such as the ink key opening, the ink source roller rotation speed, the discharge amount of the digital ink pump, and the number of calls of the ink call roller with respect to the plate cylinder rotation speed. However, the ink key opening is adjusted here. Of course, the ink supply state is adjusted by adjusting any one of the adjustment factors such as the opening degree of the ink key 1a, the rotation speed of the ink original roller 1b, and the number of calls of the ink call roller 1c with respect to the rotation speed of the plate cylinder, or a combination thereof. In this embodiment, the ink key opening is used because a large number of ink keys are provided in the print width direction and the ink supply state can be adjusted for each ink key unit width (ink supply zone).

In addition to the pattern image data, the apparatus main body 11 receives colorimetric information (measurement result data) of the printed matter 15 from the sensor 14. The sensor 14 may be any sensor as long as it can detect the color of the printed matter 15 (a color value that is a value indicating the color development state). These color values include color coordinate values such as L ^* a ^* b ^* (also simply referred to as Lab), spectral reflection spectrum values R (λ), I (infrared light), R (red light), G ( Each of the reflection densities of Green light) and B (Blue light) can be used. Here, the sensor 14 will be described as a density sensor that detects R, G, and B as color values. If the spectral spectral value R (λ) is a color value, a spectral reflectometer may be applied to the sensor 14, and if the color coordinate value is a color value, a spectral reflectometer, a color difference meter, or the like is applied to the sensor 14. That's fine.

  In addition, the image control unit 11b of the apparatus main body 11 displays an image (an image of a target color pattern) on a screen of the monitor 12 in which a pattern printed by a printing machine is displayed in a color tone of a print sample (also referred to as a proof print or a galley). ) 16 and the color of the printed matter 15 printed by the printing machine are measured by the sensor 14, and the measured colorimetric values are applied to the device profiles of the sensor 14 and the monitor 12. The image (image of the detected color pattern) 17 projected on the screen and the simulated change amount of the ink supply amount of the printing press are applied to each device profile of the printer and the monitor including the relationship between the ink supply amount and the color value. An image (simulated change color pattern image) 18 ′ displayed by changing the detected color pattern to a color tone corresponding to the simulated change of the ink supply amount, all on the same screen, or a combination of the two, or single In the display.

Note that the image 16 of the target color pattern (that is, the print pattern projected in the color tone of the print sample) is projected in the color tone of the print sample by applying the pattern data of the print pattern to each device profile of the print sample and the monitor 12. Alternatively, an image obtained by directly scanning the print sample with the sensor (scanner) 14 may be displayed.
Before the start of printing, the image control unit 11b presets the ink supply amount, that is, the opening degree of each ink key 1a in advance to an existing preset value. In this embodiment, the preset value is also set in advance (print start). Adjustment is made to the previous). That is, the image control unit 11b displays an image (an image of a target color pattern) 16 that displays a pattern to be printed by the printing machine 1 in the color tone of the printing sample on the screen 12a of the monitor 12 before starting printing by the printing machine 1. The image data of the pattern to be printed is applied to each device profile of the printing machine 1 and the monitor 12, and the printing machine 1 uses the pattern to be printed as an existing preset value (previously updated preset value or default value). The image is generated so that the image (image of the assumed color pattern) 17 ′ displayed in the color tone when printed according to 1 is displayed side by side at the same time.

  Then, the image of the target color pattern (monitor proof image) 16 projected on the same screen of the monitor 12 is compared with the image 17 'of the assumed color pattern, and the detected color pattern exceeds the allowable limit with respect to the target color pattern. If there is a large difference in color tone, the preset value is simulated. At this time, the operator can set the screen to the preset value change mode and perform a simulated change of the preset value, that is, an ink supply state adjustment operation (for example, an ink key opening change operation).

  In this preset value change mode, as shown in FIG. 1, three images, a target color picture image 16, a simulated change color picture image 18 ', and an assumed color picture image 17' are displayed side by side. The image 18 ′ is initially displayed in the same manner as the image 17 ′ of the assumed color pattern, and then the color change that occurs when the preset value is changed according to the simulation change of the preset value is simulated change color This is added to the pattern image 18 '.

At this time, it is necessary to estimate a change in color according to a change in the ink key opening of the printing machine 1, but the relationship between the ink key opening of the printing machine 1 and the color is prepared as a device profile of the printing machine 1. Therefore, using this, the color of the image 18 'of the simulated change color pattern is changed according to the preset value change (simulated change of the ink key opening).
Here, the target color picture image 16, the assumed color picture image 17 ′, the simulated change color picture image 18 ′, and the assumed color picture image 17 ′ are arranged in this order on the same screen of the monitor 12. The target color pattern image 16 and the simulated change color pattern image 18 'are adjacent to facilitate visual comparison. However, the arrangement of the display images is not limited to this, but from one end of the screen. The target color picture image 16, the assumed color picture image 17 ′, and the simulated change color picture image 18 ′ may be displayed in this order, and the target color picture image 16 is arranged in the center of the screen, and on both sides thereof. An image 17 of the assumed color pattern and an image 18 ′ of the simulated change color pattern may be arranged.

In addition, the simulated change of the preset value is performed through an operation member that changes the actual ink supply amount, that is, a switch 19b of the touch panel 19a or an ink key opening operation member of a sheet panel provided in the printing operation panel. ing.
Note that the preset value of the ink supply amount (ink key opening) is obtained by using a preset function (API function) that associates the pattern line drawing rate and the ink supply amount included in the device profile of the printing press with the image image data (API function). However, the reason why the preset value is changed in this way can be determined because the current preset function is not optimal for this printing. Therefore, in the present embodiment, the preset function is updated and corrected to a more appropriate preset function based on the ink supply amount (ink key opening) obtained by the simulation change of the preset value. This will be described later.

By the way, when the preset value of the ink supply amount before printing is changed, each of the target color picture image 16, the assumed color picture image 19, and the simulated changed color picture image 18 ′ is an equivalent color image. If it is not displayed, it cannot be properly compared.
Therefore, in the image control unit 11b, the image 16 of the target color pattern is added to the pattern image data by the print sample profile (target profile, print sample profile) which is the color characteristic of the sample of the printed matter 15 and the color characteristic of the monitor 12. It is generated by acting a certain image display profile (monitor profile). Also, the assumed color pattern image 19 includes, in the pattern image data, a printing machine profile of the printing machine 1 (a printing device profile group selected by an ink supply amount and a line drawing rate for each key zone) and a color characteristic of the monitor 12. It is generated by acting a certain image display profile (monitor profile). The simulated changed color pattern image 18 ′ includes an assumed color pattern, a printing machine profile (a printing device profile group selected based on an ink supply amount and a line drawing rate for each key zone), and a monitor 12. The image display profile (monitor profile), which is the color characteristic of the image, is generated so as to change the color tone according to the change operation of the ink supply amount. Each profile is used by calling from the databases 31 to 33 (30 if not distinguished).

  On the other hand, when printing is actually performed to obtain the printed matter 15, the color of the printed matter 15 is measured by the sensor 14, and the color measurement information (measurement result data) is taken into the image control unit 11b. A color 17 corresponding to the colorimetric value, that is, an image 17 of a detected color pattern which is an image of the color of the actual printed matter is generated and displayed on the screen 12a of the monitor 12. Also in this case, the image 16 of the target color pattern and the image 17 of the detected color pattern are displayed on the screen 12a of the monitor 12 at the same time.

  Further, a simulation change mode for simulating and changing the color development can be selected. When the simulation change mode is selected for the display of the image 17 of the detected color pattern, the image control unit 11b performs the simulation change of the ink supply amount. An image 18 of a simulated change color pattern whose color development state is changed in response to is additionally displayed. It should be noted that the simulation change mode may be selected when information on the simulation adjustment operation of the ink supply state (change operation of the ink key opening) is entered by the operator.

  The simulated change color pattern image 18 is based on the detected color pattern image 17 and changes the color of the detected color pattern image 17 in accordance with the simulated change of the ink supply amount. Also in this case, the target color pattern image 16 and the simulated change color pattern image 18 are adjacent to facilitate visual comparison. However, the display arrangement is not limited to this. From one end side, the target color picture image 16, the detected color picture image 17, and the simulated change color picture image 18 may be displayed in this order.

When the ink supply amount after printing is simulated, each of the target color pattern image 16, the detected color pattern image 17, and the simulated change color pattern image 18 must be displayed as an equivalent color. , Can not contrast properly.
Therefore, in the image control unit 11b, the image 16 of the target color pattern includes the print sample profile (target profile, print sample profile) which is the color characteristic of the sample of the printed material and the color characteristic of the monitor 12 in the pattern image data. Generated by acting an image display profile (monitor profile). The detected color picture image 17 is generated by applying the sensor profile as the color characteristic of the colorimeter 14 and the image display profile (monitor profile) as the color characteristic of the monitor 12 to the picture image data. The image 18 of the simulated change color pattern includes, on the detected color pattern, a printing machine profile (a printing device profile group selected by an ink supply amount and a line drawing rate for each key zone) that is a color characteristic of the printing machine 1 and the monitor 12. The image display profile (monitor profile), which is a color characteristic, is applied to generate the color tone according to the ink supply amount changing operation. Also in this case, each profile is called from the databases 31 to 33 (30 if not distinguished) and used.

Further, the apparatus main body 11 has a function (data update) for updating the correspondence relationship (each profile) stored in the database 30 based on the ink supply amount at that time when the color tone appropriate information is received after the ink supply amount adjustment operation information. Part) 11d.
In the database 30, for each printing material (each type of ink, printing paper, blanket, etc.), for example, as shown in FIGS. 6 (a) and 6 (b), the ink key opening (Kk, Kc, Km, Ky) and the image rate (Ak, Ac, Am, Ay), and each ICC data [for example, the relationship between picture data (k, c, m, y) and color space coordinate values (L ^* a ^* b ^* )] Is a correspondence.

As an example of updating the ICC profile (relationship of cmyk⇔Lab) using the ink key opening degree and the image area ratio as parameters, FIGS. 7 to 9 show L ^* , a ^* and b ^* for cyan c, respectively. As shown with respect to the coordinate values, the design data (k, c, m, y) and the stroke rate (Ak, Ac, Am, Ay) of the key zone are used as parameters for each design data (k, The color coordinate values of c, m, y), for example L ^* , a ^* , b ^* , can be corrected by the scanner input image of the current printed matter.

More specifically, the device profile is updated by the following procedure.
(1) First, the Lab of the current printed matter is obtained by applying the signal RGB of the color measurement sensor (scanner) to the scanner profile (Lab⇔RGB).
(2) Since the pattern data (k, c, m, y) of the current printed material is known, the Lab value of the current printed material corresponding to the pattern data (k, c, m, y) is thereby known.
(3) The ICC profile can be updated by the correspondence between the pattern data (k, c, m, y) and the Lab value.
(4) Further, since the current key opening of each key zone is known, and the current key zone drawing rate is known from the pattern data, the key opening and drawing rate are parameterized from the above data. The updated device (ICC) profile can be updated.

Furthermore, with reference to FIG. 10, an update example of the profile relating to the correspondence between the ink supply amount (ink key opening) and the color value (here, color coordinates) will be described. However, the following learning method is only one specific example for explaining the method of the present invention.
First, when a target color value (Target color value) is given, the key opening A is set from the point P1 that becomes the Target color value in the default curve of the target profile. If the target profile is correct, the target color value can be obtained at this key opening A. If the target profile is not correct, the key color opening A results in a color value that deviates from the Target color value. For example, if the color value at the point P2 deviates from the Target color value as a result of printing at the key opening A, a profile curve along the point P2 is set, and this is used as a learning change curve. And it prints with the key opening degree E (refer point P3) corresponding to the Target coloring value on this learning change curve. If the learned profile (learning change curve) is correct, the target color value can be obtained with this key opening E. If this profile is not yet correct, the above processing is repeated once again to update learning.

  As shown in FIG. 11, the database 30 has image data (k, c, Ky, K, K, Km) and image data (k, c, Am, Ay) as parameters. m, y) and the color coordinate values (L *, a *, b *), the ink key opening degree (Kk, Kc, Km, Ky) and the image area ratio (Ak, Ac, Am, Ay) are parameters ICC Profile data is created as a data group and updated as appropriate.

  Further, the apparatus main body 11 is provided with a function (color matching unit) 11e for automatically performing color matching by the above-described operator. When this automatic color matching mode is selected, the color matching unit 11e has a target color picture image. If the difference (color difference) between the 16 colors and the color of the detected color picture image 17 exceeds an allowable limit, the ink supply amount (including preset values) is adjusted according to the color difference. Also in this case, if the profile of the printing machine 1 is used, the ink supply amount or the change amount of the ink supply amount can be easily calculated so that the color difference is within the allowable limit.

(Method configuration, operation and effect)
Since the printing color tone control support device and printing color tone management device according to the first embodiment of the present invention are configured as described above, printing color tone control support and printing color tone management are performed as shown in FIGS. be able to.

  That is, as shown in FIG. 4, plate making data (pattern data) is acquired (step s10, acquisition step), and the ICC profile of the print sample (proof print, galley) is applied to the pattern data to obtain the color of the print sample ( The target color picture image 16 is displayed on the screen 12a of the monitor 12 (step s20, target color picture display step). Here, instead of operating the ICC profile of the print sample, the print sample is directly scanned (colorimetric) by the scanner 14, and the color (image of the target color pattern) 16 of the print sample is obtained from the scan (colorimetry) information. May be displayed on the screen 12a of the monitor 12. That is, the scanner output RGB is applied to the scanner profile RGB⇔Lab to calculate Lab, and this Lab is applied to the monitor profile Lab⇔R′G′B ′ to obtain R′G′B ′ and display it on the monitor. be able to.

  Then, the drawing rate of each key zone is calculated from the plate-making data (pattern image data) (step s30, drawing rate calculation step), and then a picture image of each ink key zone is used using a preset function (API function). Each ink key is preset to the ink key opening corresponding to the linearity (step s40, preset step). Further, the color of the assumed printed matter (assumed color picture image 17 ′) corresponding to the preset ink key opening is displayed on the screen 12a of the monitor 12 (step s50). At this time, a default ICC profile database using the ink key opening and the image line ratio as parameters is used.

As a result, the screen 12a of the monitor 12 displays the color of the print sample (target color pattern image) 16 and the color of the printed matter (the assumed color pattern image 17 ') corresponding to the preset ink key opening. .
Based on this comparison display, the color of the printed material (image 17 ′ of the assumed color pattern) corresponding to the preset ink key opening displayed on the screen 12a of the monitor 12 matches the color (first image) 16 of the print sample. (Step s60, determination step).

  If the operator determines that the assumed color pattern image 17 ′ of the printed material corresponding to the preset ink key opening does not match the color of the print sample (target color pattern image) 16, the operator adjusts the ink key opening ( Step s70, preliminary color matching step). At this time, the operator refers to the color of the image 18 ′ of the simulated color change pattern image 18 ′ that is displayed on the monitor and changes the color of the image 17 ′ of the assumed color pattern according to the ink key opening adjustment. It can be easily matched to the color.

Further, at this time, since actual printing is not performed, there is no generation of waste paper or the like, and no printing material is consumed. In addition, since the color of the image 18 of the simulated change color pattern is changed according to the ink supply amount adjustment operation, the operator can make prior color adjustment without any sense of incongruity by the actual ink supply amount adjustment operation.
If the colors match, the main printing is performed (step s80, printing step). Here, it is assumed that the printing is stopped by performing the minimum number of sheets. For example, in the case of sheet-fed printing, since the printing press can be easily stopped, usually about 10 to 100 trial prints are performed for register and color matching and repeated several times until the color and register are matched. Therefore, in the case of sheet-fed printing, printing is stopped while following the conventional procedure. After the main printing, the color of the obtained printed matter 15 is scanned (colorimetric) by the scanner 14 (step s90, colorimetric step), and the color image (detected color pattern) of the printed matter 15 is obtained from this scan (colorimetric step) information. ) 17 is displayed on the screen 12a of the monitor 12 (step s100, detected color picture display step).

As a result, the color image (target color pattern) 16 of the print sample and the color image (detected color pattern image) 17 of the printed matter 15 are displayed in contrast on the screen 12 a of the monitor 12.
Based on this contrast display, whether the color image (target color picture image) 16 of the print sample displayed on the screen 12a of the monitor 12 matches the color image (detected color picture image) 17 of the printed matter 15 or not. Is determined (step s110, determination step).

  Here, if it is determined that the color of the printed matter 15 (the color of the detected color pattern image 17) does not match the color of the print sample (the color of the target color pattern image 16), first, the current ink key opening and image line are determined. The database (default ICC profile database using the ink key opening and the image line rate as parameters) is updated based on the rate and the color data acquired by the scanner this time (step s120, database update step). Then, the operator adjusts the ink key opening (step s130, post-printing color matching step).

  Also at this time, the simulated change color is displayed while referring to the color of the image 18 of the simulated change color picture and the color of the print sample (target color picture image) 16 that are displayed on the monitor and change in color according to the ink key opening adjustment. The color of the pattern image 18 can be easily matched to the color of the print sample (target color pattern image) 16. Further, when displaying an image on this monitor, by using a database that has been updated recently, more accurate color display can be performed, and color matching can be performed with higher accuracy.

Also in this case, since the color of the image 18 of the simulated change color pattern is changed according to the actual ink supply amount adjustment operation, the operator can adjust the color matching without any sense of incongruity by the actual ink supply amount adjustment operation. Can do.
Thereafter, the printing step (step s80), the color measurement step (step s90), and the second display step (step s100) are performed again, and the color of the simulated modified color pattern image 18 is the target color pattern image 16 of the print sample. Steps s110, s120, s130, s80, s90, and s100 are repeated until the color matches.

  As a result, while obtaining the detection result of the actual printed matter, based on this, the target color picture image 16 of the print sample and the image 17 of the detected color picture are displayed in contrast on the same screen 12a, and on this screen 12a. Furthermore, since the image 18 of the simulated change color pattern whose color changes according to the ink key opening adjustment is displayed in comparison, the operator can easily match the print color with the color of the print sample of the monitor while referring to this. Can do. In addition, since printing is stopped once a small number of prints are made and color matching is performed, there is less loss of paper.

  Furthermore, since the database is updated more appropriately at this time, the subsequent control can be performed with higher accuracy by using this database. This database is organized by printing materials (ink type, paper type, blanket type, etc.) and, if necessary, environmental conditions (ambient temperature / humidity, dampening water temperature, ink temperature, roller group temperature, etc.). In the next printing, it is selected as necessary.

  At this time, if the automatic color matching mode is selected, the ink supply amount (preset value) is set so that the difference (color difference) between the color of the target color picture image 16 and the color of the detected color picture image 17 is within the allowable limit. Therefore, the operator can monitor the automatic adjustment while visually observing the target color pattern image 16 of the print sample and the images 18 and 18 'of the simulated change color pattern on the same screen. That's fine.

  In the case of the present embodiment, since the printing color tone control support device is applied to a sheet-fed printing machine, as shown in FIG. 12, the printing machine is usually activated to print a predetermined number of sheets (for example, about 10 to 100 sheets). (Adjustment printing) is performed by adjusting the printing press (for example, registering), then starting the printing press again, printing a predetermined number of prints, and then re-adjusting the printing press. Is completed (FIG. 12 shows a case where printing for adjustment is performed three times), and normal printing (main printing) is started.

The print color tone control support and the print color tone control are performed by checking the preset value of the ink supply amount before the first adjustment printing, using the processing unique to the sheet-fed printing press. When the result preset value needs to be updated (modified), the color tone of the actual printed matter can be made very close to that of the print sample at the start of printing.
Then, the color tone of the actual printed matter printed by the printing press 1 is measured by the sensor 14 and checked against the color tone of the print sample on the same monitor screen. If the ink supply amount needs to be adjusted, the ink supply amount is adjusted. After making the simulation adjustment, the result of the simulation adjustment is reflected in the ink supply amount at the time of actual printing, printing is performed again by the printing machine 1, and the color tone of the actual printed matter obtained by this is again measured by the sensor 14. Measure and check against the color tone of the print sample on the same screen. Further, if necessary, the ink supply amount is simulated and the above process is repeated. As a result of the comparison and confirmation, if it is determined that the color tone of the actual printed matter is sufficiently close to the print sample (OK), normal printing (main printing) is started.

In this way, since the color tone of the actual printed material is checked against the color tone of the print sample on the same monitor screen, the color tone of the actual printed material can be brought close to the color tone of the print sample with high accuracy, and the print quality can be improved. A big contribution.
Further, when the ink supply amount is simulated and adjusted while comparing the actual color tone of the printed matter with the color tone of the print sample, the color of the image 18 of the simulated change color pattern is compared with the color of the target color pattern image 16. Because it can be adjusted with high precision, at least with regard to color tone control (color matching), the number of adjustment printings can be made smaller, reducing paper loss and shortening the printing time (especially the adjustment time before actual printing). it can.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In this embodiment, the printing press to which the printing color tone control support and the printing color tone control are applied is a rotary press such as a newspaper or a commercial offset rotary printing press, and the printing color tone is printed while continuously printing the printing press. Implement control support and print color control.

  That is, in the case of a rotary press, since continuous paper (web) is used, it is not desired to stop the printing machine as much as possible once printing is started. Therefore, normally, as shown in FIG. 13, when the printing press is started, adjustment of the printing press (for example, adjustment of print registration and cutting registration, color matching, etc.) is performed at low speed operation (adjustment printing), and the adjustment is completed. Thereafter, the operation speed of the printing press is increased so that normal printing (full printing) is started.

In such a rotary press, when the printing color tone control support and the printing color tone control are performed, as in the first embodiment, first, the preset value of the ink supply amount is checked before the printing machine is started. When the result preset value needs to be updated (corrected), it is updated so that the actual color tone of the printed matter is very close to the print sample at the start of printing.
Then, at the time of low speed operation in which the printing press is activated and the printing press is adjusted, the printed matter is sampled at a predetermined timing, and the color tone of the printed matter is measured by the sensor 14. The predetermined timing is a timing at which the printing state is waited after the low-speed operation is started, and can be given as a point in time after a predetermined time has elapsed after the start of the low-speed operation from the characteristics of the printing press.

  The pattern measured by the sensor 14 is displayed as a detected color pattern on the same screen of the monitor 12 in comparison with the target color pattern, and the color is confirmed by comparing the color tone of the detected color pattern and the target color pattern. If it is necessary to adjust the ink supply amount, the ink supply amount is simulated, and then the result of the simulation adjustment is reflected in the ink supply amount at the time of actual printing (in FIG. Print again on the printing press, and measure the color tone of the actual printed material obtained by this again with the sensor 14 and check it against the color tone of the print sample on the same screen. Perform the simulation adjustment and repeat the above process.

The example shown in FIG. 13 shows a case where it is determined that the color tone of the actual printed matter is sufficiently close to the print sample (OK) by one simulation adjustment, but there are cases where a plurality of simulation adjustments are required. Conceivable.
As described above, when it is determined that the color tone of the actual printed matter is sufficiently close to the print sample, the operation speed of the printing press is increased to start normal printing (full printing).

Since the printing color tone control support and the printing color tone control (color matching) such as the simulated change color pattern display according to the present embodiment are performed as described above, the detected color obtained during printing while continuing printing by the printing press. Based on the design, color matching is performed by a simulation change so that it is close to the target color design.
On the other hand, since the detected color pattern can be captured at a predetermined cycle, the actual ink supply amount is adjusted so that it approaches the target color pattern while observing the detected color pattern obtained in substantially real time. It is also possible to operate.

  In particular, in the case of the rotary printing press 1 ′, as shown in FIG. 15, a sensor (colorimeter) 14 ′ for measuring the color of the printed matter 15 ′ is provided on-line immediately downstream of the printing unit 1A ′. While continuously measuring the color of ′, the ink supply amount is adjusted by feedback so that the detected color pattern measured by the pattern color tone management device body (arithmetic unit) 11 ′ approaches the target color pattern, and the printed pattern A technology for controlling the color tone of the image has been developed.

  In the example shown in FIG. 15, the printing unit 1A ′ has a plate cylinder of four process colors of k (black; black), c (cyan; indigo), m (magenta; red), and y (yellow; yellow). 2, the blanket cylinder 3 is disposed on both sides of the travel path of the web (continuous paper) that becomes the printed matter 15 ', and the sensor (colorimeter) 14 is located immediately downstream of the final color (here, y (yellow; yellow)). 'Is arranged.

The present invention can also be applied to such a technique.
That is, when the on-line sensor 14 'is provided, it is possible to continuously obtain the detected color pattern in real time, so that it is possible to manage printing while displaying the detected color pattern that can change from moment to moment on the monitor 12. . Therefore, the operator switches the color tone management from the automatic mode to the manual mode and observes the detected color pattern displayed on the monitor 12 in real time so that the color of the detected color pattern displayed is closer to the color of the target color pattern. The supply amount can be adjusted manually.

However, since the actual ink supply amount changes with a certain response delay after the change operation, if the response delay is ignored and an attempt is made to bring the real-time detected color pattern closer to the target color pattern, a solid line in FIG. As shown, the change operation tends to be performed excessively, and as a result, it may take time for the ink supply amount to be appropriate.
In this regard, color matching by simulated change will result in an optimal change operation for the obtained detected color pattern, and even if printing during this simulated change operation becomes waste paper, If the actual ink supply amount is adjusted based on this, as shown by the broken line in FIG. 14, the color tone of the printed matter can be made appropriate with a certain response time, and as a result, An increase in printing time can be expected to be suppressed.

(Other)
As mentioned above, although embodiment of this invention was described, embodiment of this invention is not limited to the above-mentioned thing.
For example, in the above embodiment, three examples of the image displayed on the monitor 12 at the time of the simulation change are the target color picture image 16, the assumed color picture image 17 ′, and the simulated change color picture image 18 ′, or The target color picture image 16, the detected color picture image 17, and the simulated change color picture image 18 are displayed side by side on the same screen. At the time of the simulation change, the assumed color picture image 17 'is detected. The image 17 of the color pattern is omitted, and the contrast display of the two images of the image 18 ′ of the simulated change color pattern that changes in accordance with the simulation change from the image 17 ′ of the assumed color pattern and the image 16 of the target color pattern, and the detected color pattern It is also possible to display two images, a simulated change color pattern image 18 and a target color pattern image 16 that change in accordance with the simulated change from the image 17.

  Furthermore, in the above embodiment, these images 16, 17, 17 ', 18, 18' are displayed on the same screen of the monitor 12, but they are not necessarily displayed on the same screen of the monitor 12. Not. In other words, even if there are a plurality of monitors, if these monitors are properly calibrated so as to have the same color development characteristics, and these monitors are arranged close to each other, the image 16 is displayed on each monitor. , 17, 17 ', 18, 18' can be divided and displayed to obtain the same effect as described above.

It is explanatory drawing explaining the main functions of the printing color tone control assistance apparatus and printing color tone management apparatus concerning 1st Embodiment of this invention. It is explanatory drawing explaining one function of the printing color tone control assistance apparatus and printing color tone management apparatus concerning 1st Embodiment of this invention. 1 is a configuration diagram of a printing color tone control support device and a printing color tone management device according to a first embodiment of the present invention. FIG. 5 is a flowchart for explaining a printing color tone control support method and a printing color tone management method according to the first embodiment of the present invention. 5 is a flowchart for explaining a printing color tone control support method and a printing color tone management method according to the first embodiment of the present invention. It is a figure explaining the database concerning a 1st embodiment of the present invention, (a) shows the 1st example and (b) shows the 2nd example. It is a figure explaining the update of the database concerning 1st Embodiment of this invention. It is a figure explaining the update of the database concerning 1st Embodiment of this invention. It is a figure explaining the update of the database concerning 1st Embodiment of this invention. It is a figure explaining the update of the database concerning 1st Embodiment of this invention. It is a figure explaining creation and update of a database concerning a 1st embodiment of the present invention. It is a time chart explaining the printing color tone control support method and printing color tone management method concerning 1st Embodiment of this invention. It is a typical time chart explaining the printing color tone control assistance method and printing color tone management method concerning 2nd Embodiment of this invention. It is a typical time chart explaining the effect of the printing color tone control support method and printing color tone management method concerning a 2nd embodiment of the present invention. It is a typical side view which shows the principal part structure of the printing press concerning the modification of 2nd Embodiment of this invention. It is explanatory drawing explaining the main functions of the printing color tone control assistance apparatus concerning background art. 6 is a flowchart illustrating a printing color tone control support method according to the background art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 'Printing machine 1a Ink key 1b Ink original roller 1c Ink call roller 2 Plate cylinder 3 Blanket cylinder 11, 11' Picture color tone management apparatus main body (Picture color tone management terminal or arithmetic unit)
11a Ink supply amount calculation unit 11c CMS conversion unit 11b Image information generation unit 11c CMS conversion unit 11d Data update unit 11e Color matching unit 12 Monitor display (image display device, monitor)
12a Screen of monitor 12 14, 14 'sensor (colorimeter, here scanner)
15,15 'Printed matter 16 Image projected in the color tone of the printed sample (image of the target color picture)
17 Image projected with colorimetric color (detected color pattern image)
17 'Image projected in assumed color (image of assumed color pattern)
18, 18 'An image that is displayed with a color tone changed according to a simulated change in the ink supply amount (image of a simulated change color pattern)
19a touch panel 19b switch 20 plate making system 30-33 database

Claims (23)

A target color picture display step for projecting a picture to be printed by a printing machine on a monitor screen as a target color picture in a color tone of a printing sample;
The printed matter printed by the printing machine is color-measured by a sensor, and the colorimetric value measured by the sensor is applied to each device profile of the sensor and the monitor to detect a color pattern detected by the color tone measured by the sensor. As a detected color picture display step for projecting on a screen having the same color development characteristics as the target color picture of the monitor,
The simulated change amount of the ink supply amount of the printer is applied to each device profile of the printer and the monitor including the relationship between the ink supply amount and the color value, and the detected color pattern is simulated of the ink supply amount. And a simulated change color pattern display step for displaying on a screen having the same color development characteristics as the target color pattern of the monitor as a simulated change color pattern after changing to a color tone according to the change. Control support method. 2. The printing according to claim 1, wherein in the target color pattern display step, the pattern data of the pattern to be printed is applied to each device profile of the print sample and the monitor, and is displayed in the color tone of the print sample. Color tone control support method. 2. The print color tone control support method according to claim 1, wherein in the target color picture display step, an image obtained by measuring the color of the print sample with the sensor is displayed on a screen of the monitor. 4. The simulated changed color pattern display step displays the simulated changed color pattern on a screen having the same color development characteristics as the target color pattern and the detected color pattern of the monitor. The printing color tone control support method according to Item 1. The simulated change amount input operation member is an actual ink supply amount adjustment operation member of the printing press, and the simulated change color picture display step receives the information of the ink supply amount adjustment operation member and performs the simulated change. 5. The printing color tone control support method according to claim 1, wherein a color pattern is displayed on a screen of the monitor. The parameter corresponding to the ink supply amount is at least one of an ink key opening degree, an ink original roller rotation number, a number of calls of an ink call roller with respect to a plate cylinder rotation, and a discharge amount of a digital ink pump. The printing color tone control support method according to any one of claims 1 to 5. The printing color tone control support method according to claim 1, wherein the printing machine is a sheet-fed printing machine. While implementing the printing color tone control support method of any one of Claims 1-7,
In the simulated change color picture display step, the simulated change amount is manipulated to compare the target color picture displayed on the screen with the same color development characteristics and the simulated change color picture to change the ink supply amount, and the simulated change A printing color tone management method comprising: a color matching step for matching a color tone of a color picture pattern to a color tone of the target color picture pattern. Before starting printing by the printing machine, a picture to be printed by the printing machine is displayed on the screen of the monitor as a target color picture with a color tone of a printing sample, and the picture data of the picture to be printed is displayed on the printing machine and the monitor. A pre-printing pattern display step for projecting a pattern to be printed by the printing machine as an assumed color pattern when acting on each of the device profiles;
The simulated change amount is manipulated while comparing the target color pattern projected in the pre-printing pattern display step and the assumed color pattern, and the ink supply amount is simulated, and the color tone of the assumed color pattern is changed to the target color pattern. A pre-color matching step to match the color tone of
9. A preset step of presetting an actual ink supply amount in accordance with the simulated change amount operated in the preliminary color matching step before the printing is started. Print color management method. The printing color tone management method according to claim 8 or 9, wherein the simulated change color picture display step and the color matching step are performed after the printing machine is stopped after printing by the printing machine. 10. The printing color tone management method according to claim 8, wherein the simulated color image display step and the color matching step are performed while continuing printing by the printing machine. The device profiles of the printer, the sensor, and the monitor, or the device profiles of the printer, the sensor, the monitor, and the print sample are stored in advance in a database, and the color matching step and / or the event. 12. The print color tone management according to claim 8, wherein the corresponding device profile stored in the database is updated based on the ink supply amount color-matched in the previous color matching step. Method. A monitor, and an image control unit that controls an image displayed on the screen of the monitor,
The image control unit includes a target color picture which is a color tone of a print sample of a picture to be printed by a printing machine, and a color measurement value obtained by measuring a color of a printed matter printed by the printing machine using a sensor. The detected color pattern, which is the color tone applied to the profile, and the simulated change amount of the ink supply amount of the printing press affect each device profile of the printer and the monitor including the relationship between the ink supply amount and the color value. Printing color tone control, wherein the detected color pattern is controlled to be displayed on one screen of the monitor with the simulated changed color pattern changed to a color tone according to the simulated change of the ink supply amount. Support device. The image control unit causes the pattern data of the pattern to be printed to act on each device profile of the print sample and the monitor, and displays the image data on the screen of the monitor in the color tone of the print sample. The printing color tone control support apparatus according to 13. The print color tone control support according to claim 13 or 14, wherein the image control unit displays the simulated changed color pattern on a screen having the same color development characteristics as the target color pattern and the detected color pattern of the monitor. apparatus. The simulated change amount input operation member is an actual ink supply amount adjustment operation member of the printing press,
The said image control part receives the information of the said ink supply amount adjustment operation member, and displays the said simulation change color pattern on the screen of the said monitor, The any one of Claims 13-15 characterized by the above-mentioned. Print color tone control support device. The parameter corresponding to the ink supply amount is at least one of an ink key opening degree, an ink original roller rotation number, a number of calls of an ink call roller with respect to a plate cylinder rotation, and a discharge amount of a digital ink pump. The printing color tone control support device according to any one of claims 13 to 16. The printing color tone control support apparatus according to claim 13, wherein the printing machine is a sheet-fed printing machine. A printing color tone control support device according to any one of claims 13 to 18,
The simulated change amount is manipulated to compare the target color picture projected on the screen with the same color development characteristics and the simulated change color picture, and the ink supply amount is simulated to change the color tone of the simulated change color picture. A printing color tone management apparatus comprising a color matching unit that automatically matches a color tone of a target color picture. Before starting printing by the printing machine, the image control unit projects a picture to be printed by the printing machine on a screen of the monitor as a target color picture in a color tone of a printing sample, and displays the pattern data of the picture to be printed. It is configured to project an image to be printed by the printer by acting on each device profile of the printer and the monitor as an assumed color pattern when printed by the printer,
The color matching unit manipulates the simulated change amount while comparing the target color picture displayed on the monitor and the assumed color picture to change the ink supply amount, and changes the color tone of the assumed color picture to the target color It is configured to automatically match the color of the pattern,
20. The print color tone management apparatus according to claim 19, further comprising a preset unit that presets an actual ink supply amount in accordance with the simulated change amount operated by the color matching unit before the start of printing. . The color matching unit performs a process of automatically matching the color tone of the simulated changed color pattern to the color tone of the target color pattern by stopping the printing machine after printing by the printing machine. The printing color tone management apparatus according to 19 or 20. 21. The color matching unit performs the process of automatically matching the color tone of the simulated changed color pattern to the color tone of the target color pattern while continuing printing by the printing machine. Printing color tone management device. The device profiles of the printing machine, the sensor, and the monitor, or the device profiles of the printing machine, the sensor, the monitor, and the print sample are stored in advance in a database and color-matched by the color matching unit. 23. The printing color tone management apparatus according to claim 19, further comprising a device profile update unit that updates a corresponding device profile stored in the database based on an ink supply amount. .

Images