JPS63230343A - Ink supply amount control apparatus of printing press - Google Patents

Abstract

PURPOSE:To accurately perform ink supply amount correction work, by making it possible to display the set amount of each ink controller in a predetermined specific setting stage along with the present set amount. CONSTITUTION:An ink supply amount control apparatus 19 has a plurality of ink controllers 22 controlling the ink supply amount of each of the ink regions divided in the longitudinal direction of an ink fountain roller 16, a display part 27 displaying the present set amount of each ink controller 22 and an operation part 28 controlling and operating each ink controller 22. In a predetermined specific set stage prior to the present set stage of each ink controller 22, for example, in a case repeating the correction of a gap and trial printing two or more times, a main control part 25 preliminarily stores the set amount of the ink controller 22 in the previous gap correction stage in a memory part and together displays this stored data on a display part 27 at the time of the next control operation. By this method, the relation between the previous gap correction quantity and the density change quantity thereby can be grasped and the next gap correction quantity to be applied can be accurately determined.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an ink supply amount adjusting device for a printing press.

[Prior Art] In general, an offset printing machine or the like has a printing plate mounted on a plate roller, and a dampening water roller that rotates in contact with the plate roller supplies water to areas other than the image on the printing plate, and Ink is supplied to the image area of the printing plate by an ink source roller that rotates via a roller and a kneading roller to print. The image on the printing plate is represented by dots placed at regular intervals in a predetermined area of the printing plate, and areas with high image density are made thicker dots, and areas with low image density are made smaller dots. . Therefore, the amount of ink supplied to the picture area of the printing plate is determined according to the proportion of large and small dots in a predetermined area of the printing plate, that is, the picture area ratio.

Here, the amount of ink supplied to the printing plate by the ink source roller is adjusted by, for example, an ink supply amount adjusting device shown in FIG. The ink supply amount adjusting device includes a flat ink blade 2 provided in the longitudinal direction of the ink source roller 1.
, a plurality of ink regulators 3 that are provided corresponding to each ink zone divided in the longitudinal direction of the ink source roller I and adjust the ink supply amount of each ink zone, and the current setting amount of the ink regulator 3. an ink regulator drive motor 5 that controls the set amount of the ink regulator 3 based on the detected amount of the potentiometer 4; and an ink regulator drive motor 5 that drives the drive motor 5 based on the measurement result of the image area ratio measuring device 6. It has a main control device 7 for controlling. The main control device 7 includes a receiving section 7A, a CPU 7B, and motor drive control sections 7C and A.
/D conversion section 7D.

That is, the main controller 7 takes in the measurement results of the picture area ratio measuring device 6 from the receiving section 7A to the CPU 7B. CPU7
B converts this data into a motor drive amount corresponding to each ink band using a predetermined conversion coefficient, and outputs this motor drive amount to the motor drive control section 7C. The control unit 7C controls the drive motor 5 corresponding to each ink band by the CPU 7.
The drive is controlled in the amount and direction according to the signal from B.

Note that the detection amount of the potentiometer 4 is fed back to the control unit 7C at any time, and the control unit 7C stops when the gap between the ink source roller l and the ink blade 2 in each ink zone corresponds to the measurement result of the picture area ratio measuring device 6. .

By the way, the gap between the ink source roller 1 and the ink blade 2 in each ink zone is set to a state corresponding to the measurement result of the picture area ratio measuring device 6 as described above (initial setting).
After that, when the operator actually makes a test print,
There may be cases where the color shading obtained on the printed paper is undesirable compared to the reference screen. The causes of this are: - Based on the measurement accuracy of the picture area ratio measuring device 6; - Based on the adjustment accuracy of the ink supply amount adjusting device; - When converting the measurement result of the picture area ratio measuring device 6 into the motor drive amount. Possible methods include those based on the conversion coefficients used.

Therefore, in order to optimize the color shading obtained on the already printed paper, the operator corrects the rotation amount of the ink adjuster drive motor 5 via the main controller 7, thereby correcting the rotation amount of the ink source roller in each ink zone. The gap between the ink blade 1 and the ink blade 2 is corrected.

Now, the operator can correct the gap between the ink source roller L and the ink blade 2 using the remote control.
Perform with equipment. The remote control device includes a display section 8 that displays the current setting amount of each ink regulator 3, and an operation section 9 that allows adjustment of each ink regulator 3 via the main controller 7.

The display section 8 and the operation section 9 are arranged in the same number as the ink regulator 3 so as to correspond to each ink zone of the ink source roller 1. Each display section 8 is formed by, for example, a plurality of light emitting diodes arranged vertically in a bar shape as a whole, and the light emitting diodes of each display section 8 are based on the output from the CPU 7B, and the detected amount of the potentiometer 4 in the corresponding ink zone. It lights up from the bottom depending on the situation. That is, as the current gap between the ink source roller 1 and the ink blade 2 in each ink zone increases, the number of lighting diodes in the corresponding display section 8 increases. On the other hand, each operation unit 9 has an up button that increases the gap between the ink source roller 1 and the ink blade 2 in the corresponding ink zone, a down button that decreases the gap, and a lock button that fixes the ink blade 2 at the current position. These manipulated variables are transmitted to the CPU 7B.

That is, the operator operates the operation unit 9 corresponding to each ink band to correct the gap between the ink source roller l and the ink blade 2 while comparing the color shading of the printed paper with the reference screen, and corrects the gap between the ink source roller l and the ink blade 2 in all ink bands. After the above correction work is completed, a test print is performed to check the density again, and thereafter, the above gap correction work and test print are repeated until an appropriate density state is obtained.

[Problems to be Solved by the Invention] However, the display section of the remote control device provided in the conventional ink supply amount adjustment device only displays the current setting amount of each ink regulator 3, and does not display the past setting amount. The set amount of the ink regulator 3 at any stage is not displayed. Therefore, there are the following problems.

■■ The main controller 7 completes the setting (initial setting) of the ink regulator 3 for each ink band based on the measurement results of the image area ratio measuring device 6, performs trial printing, and then uses the operation unit 9 to once correct the gap. After performing a test print using the operation section 9, or after performing a test print after correcting the gap using the operation section 9, and then performing a test print after correcting the gap using the operation section 9 again, further adjustment is made to adjust the density of a certain ink band a little more. Even if an attempt is made to perform gap correction, the setting amount of each ink regulator 3 at the stage before the current setting stage disappears from the display section 8, and the previous gap correction level cannot be confirmed. Therefore, the relationship between the previous gap correction amount and the resulting density change amount, which should be the basis for the next correction, cannot be grasped, and the next gap correction amount to be added to obtain the desired density cannot be accurately determined.

■As mentioned in (■) above, it is not possible to grasp the relationship between the previous gap correction amount and the resulting density change amount, and it is not possible to analyze the density change trend before and after gap correction in the entire ink zone direction, so the measurement accuracy of the picture area ratio measuring device 6, It is not possible to accurately grasp the adjustment accuracy of the ink supply amount adjustment device and the abnormal tendency of the conversion coefficient used to convert the measurement result of the pattern area ratio measuring device 6 into the motor drive amount, making it impossible to accurately perform gap correction work. .

(2) Even if the operating unit 9 is operated to adjust the density of any ink band at any time based on the results of the trial printing, the display unit 8 merely displays the current setting amount of each ink regulator 3.

Therefore, it is not possible to distinguish which of the many operating sections 9 has already been used as the operating section this time, and
It is not possible to confirm the current gap adjustment amount given to , and it is not possible to perform gap correction work quickly and accurately.

Due to the above-mentioned problems (1) to (2), in the conventional ink supply amount adjusting device, a large number of gap correction man-hours and trial printing man-hours are required before a printing result with appropriate shading is obtained.

SUMMARY OF THE INVENTION An object of the present invention is to provide an ink supply amount adjustment device that allows an operator to efficiently adjust the ink supply amount for each ink zone.

[Means for Solving the Problems] The present invention provides a plurality of ink regulators that adjust the amount of ink supplied to each ink band divided in the longitudinal direction of the ink source roller, and a current set amount of each ink regulator. In an ink supply amount adjustment device for a printing press, which has a display section that displays a value, and an operation section that operates to adjust each ink regulator, the display section displays a predetermined specific value prior to the current setting stage of each ink regulator. The setting amount of each ink regulator at the setting stage can be displayed together with the current setting amount of each ink regulator.

[Function] ■After a trial print, after correcting the ink supply amount by operating the ink adjuster of each ink band and performing a test print again, when you want to further correct the ink supply amount to adjust the density of a certain ink band a little more, the display will appear. The section can display the current setting of each ink regulator as well as the setting at a particular previous stage. Therefore, the operator recognizes the previous ink supply amount correction amount from the display state of the display section, grasps the relationship between the previous ink supply amount correction amount and the resulting density change, and uses this understanding result as the basis for the next correction. As a result, it is possible to accurately determine the next ink supply amount correction amount to be added in order to obtain the desired density.

■As mentioned in (■) above, since it is possible to grasp the relationship between the previous ink supply amount Ji and the resulting density change, it is possible to analyze at a glance the density change trends before and after the ink supply amount correction in all ink band directions, and the pattern area ratio The measurement accuracy of the measuring device, the adjustment accuracy of the ink supply jt adjustment device, and the +! of the picture area ratio measuring device! III Conversion coefficient V used when converting constant results into motor drive amount (Accurately grasp abnormal trends,
Ink supply amount correction work can be performed accurately.

(2) When operating the operating section to sequentially adjust the density of any ink band based on the results of the trial printing, the display section can display the setting amount before and after the operation for each ink band. Therefore, it is possible to easily distinguish which of the many operating sections has already been used as the operating method, and the current ink supply amount adjustment amount given to the operating section can also be accurately confirmed, making it possible to correct the ink supply amount. It can be done quickly and accurately.

Therefore, according to the present invention, the operator can efficiently adjust the ink supply amount for each ink zone, as described in (1) to (3) above, and the amount of ink supplied until a printing result with appropriate shading is obtained. Adjustment work can be done rationally.

[Example] Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a control system diagram showing an embodiment of the invention, Fig. 3 is a perspective view showing an example of a printing machine, and Fig. 4 is a block diagram showing an embodiment of the present invention. The figure is a plan view showing an example of the display section and the operation section, FIG. 5 is a schematic diagram showing the relationship between the setting amount of the ink regulator and the display state of the display section, and FIG. 6 is a diagram showing the operation of the display section according to the present invention. It is a top view showing an example of a state.

As shown in FIG. 3, in the printing press 11, a printing plate 13 is attached to a printing roller 12, and a dampening water roller 14 that rotates in contact with the printing plate roller 12 applies water to a portion of the printing plate 13 other than the image. At the same time, the ink source roller 16 rotating via the plate roller 12 and kneading roller 15 supplies ink to the pattern portion of the printing plate 13 for printing. In addition, the plate roller 12
The ink supplied to the picture area of the printing plate 13 mounted on the printing plate 13 is transferred to the printing paper 18 via the blanket cylinder (rubber roller) 17.

The printing press 11 includes an ink supply amount adjusting device 19.

The ink supply amount adjustment device 19 controls the ae (second
(See figure) Each area (ink zone A1, A2 of ink source roller 16) A3...
The amount of ink supplied to each region is adjusted according to the picture area ratio in the region (corresponding to at least a portion of the region). The picture area ratio of the printing plate 13 is measured by a picture area ratio measuring device (color density measuring device) 20. The picture area ratio measuring device 20 includes a suction board 20A that suction-holds the printing plate 13, and an optical scanning head 20B that moves in parallel along the upper surface of the printing plate 13 held on the suction board 2OA. The pattern area ratio in each region a to e is measured, for example, by the method described in Japanese Patent Application Laid-open No. 131-11 (2355).

As shown in FIG.
The flat ink blade 21 held at A1 and each ink band A1. A2) A3 (see Fig. 3) is provided corresponding to the ink source roller 16, and adjusts the amount of ink supplied to each ink zone by adjusting the degree of advance and retreat of the ink blade 21 with respect to each ink zone. a plurality of ink regulators (ink adjustment screws) 22, a potentiometer 23 that detects the current setting amount of the ink regulator 22 (that is, the current ink supply gap amount between the ink source roller 16 and the ink blade 21), and An ink regulator drive motor 24 that controls the setting amount of the regulator 22 based on the detection amount with respect to the detection zero point of the potentiometer 23, and the measurement result of the picture area ratio measuring device 20 or the operation amount of each operation unit 28 to be described later. The main controller 25 drives and controls each drive motor 24. The main controller 25 includes a receiving section 25
A, a CPU 25B, a motor drive control section 25C, an A/D conversion section 25D, a storage section 25E, and a detection zero point setting section 25F for the potentiometer 23. The receiving unit 25A transfers the measurement results of the picture area ratio measuring device 20 to the CPU 25B.

The CPO 25B converts the measurement result of the picture area ratio measuring device 20 into a motor drive amount corresponding to each ink band using a predetermined conversion coefficient, and outputs this motor drive amount to the motor drive control section 25C. Further, the CPU 25B calculates a motor drive amount corresponding to the operation amount of each operation section 28, which will be described later, and outputs this motor drive amount to the control section 25C.

The motor drive control unit 25C drives and controls the drive motor 24 corresponding to each ink band in an amount and direction according to a signal from the CPU 25B. Note that the detection amount of the potentiometer 23 is fed back to the control unit 25C at any time, and the process stops when the gap between the ink source roller 16 and the ink blade 21 in each ink zone corresponds to the measurement result of the picture area ratio measuring device 20. .

Note that the rotation of the ink regulator drive motor 24 is controlled by the gear 24.
It is transmitted to the potentiometer 23 via A, 22A, and 23A. Further, the ink supply amount adjusting device 19 can adjust the degree of advance and retreat of the ink blade 21 by each ink regulator 22 to zero point using the knob 22B. Further, the ink supply amount adjusting device 19 detects the amount detected by the potentiometer 23 when the ink adjuster 22 adjusts the degree of advance and retreat of the ink blade 21 to the zero point, for use in a new control operation of the drive motor 24 by the potentiometer 23. The detection zero point setting unit 25F of the potentiometer 23 automatically changes the stored detection zero point so that it can be used as a zero point.

The ink supply amount adjusting device 19 has a remote control device 26 as shown in FIG.

The remote control device 26 has a display section 27 that displays the current setting amount of each ink regulator 22, and an operation section 28 that allows adjustment of each ink regulator 22 via the main controller 25. The display section 27 and the operation section 28 are connected to the ink source roller 16.
The same number of ink regulators 22 are arranged so as to correspond to each ink band. 26A is a printing paper holding section.

Each display section 27 is made up of a plurality of light emitting diodes 29 that are arranged in a vertically continuous manner as a whole, as shown in FIG.
Based on the output from 25B, the light is turned on from the bottom according to the amount detected by the potentiometer 23 in the corresponding ink zone. That is, as shown in FIG. 5, the amount of rotation of the ink adjuster drive motor 24 in each ink zone is large, and the amount detected by the potentiometer 23 is large. As the gap becomes larger, the number of lighting diodes in the corresponding display section 27 increases. In FIG. 5, when the detected amount of the potentiometer 23 exceeds a, one diode 29
lights up and when the detected amount exceeds b, the two diodes 29
lights up, and when the detected amount exceeds j, all ten diodes 29 light up. Therefore, based on the measurement results of the picture area ratio measuring device 20, the main controller 25
In the state after adjusting the ink supply amount in each ink zone, the display section 27 of each ink zone displays a number of lights corresponding to the gap between the ink source roller 16 and the ink blade 21 after adjusting the ink supply amount. This means that the diode 29 is lit. In addition, each display section 2
Display accuracy can be improved by increasing the number of light emitting diodes 29 provided in 7.

As shown in FIG.
It has an up button 30 that increases the gap, a down button 31 that decreases the gap, and a lock button 32 that fixes the ink blade 21 at the current position, and the amount of operation thereof is controlled by C.
Transfer to PU25B. Naturally, when the up button 30 is pressed, for example, the main controller 25 increases the gap between the ink source roller 16 and the ink blade 21 by driving the ink regulator 22 via the drive motor 24, and the corresponding display section 27 The number of light-emitting diodes 29 that are lit also increases. When you press the down button 31, the ink source roller 1
The gap between the ink blade 6 and the ink blade 21 is reduced, and the number of light emitting diodes 29 lit in the corresponding display section 27 is also reduced.

When the lock button 32 is pressed, the number of light emitting diodes 29 corresponding to the gap between the ink source roller 16 and the ink blade 21 at the time of the push, that is, the amount detected by the potentiometer 23 continues to light up.

Furthermore, the main controller 25 performs a predetermined specific setting stage for each ink regulator 22, that is, in this embodiment, an automatic setting (initial setting) stage for each ink regulator 22, which is performed based on the pattern area ratio measurement result. Each ink regulator 22 in
The set amount is stored in the storage section 25E. CPU25B is
When the operator adjusts each operating section 28, the storage section 2
Each display unit 2 displays the setting amount of each ink regulator 22 in the above automatic setting stage of each ink regulator 22 stored in 5E.
Display on 7. At this time, the current setting amount by the current adjustment operation of each ink regulator 22 causes the light emitting diodes 29 of each display section 27 to be illuminated in a static state by the number corresponding to the setting amount (see the diagonal line display in FIG. 6). The set amount in the automatic setting stage of the adjuster 22 causes the light emitting diode 29 of each display section 27 that is located at the highest level of the set amount to blink (sixth
(See Z display in the figure) etc. to identify and display both set amounts.

Both set amounts may be color coded.

Thus, the ink supply amount adjusting device 19 operates as follows.

■First, the measurement results of the picture area ratio measuring device 20 are sent to the receiving section 25.
A is taken into the CPU 25B.

■The CPU 25B converts the captured image area ratio into the motor rotation angle of the ink adjuster drive motor 24 corresponding to each ink band using a predetermined conversion coefficient (conversion curve), and uses the calculation result to the motor drive control section. Output to 25C.

■Motor drive control @B25C controls motor 24 by CPU25
Rotate the specified amount in the specified direction from B.

■The amount of rotation of the motor 24 is detected by the potentiometer 23, and the amount of rotation of the motor 24 is detected by the CPU 25 via the A/D converter 25D.
B, forming a feedback system, and the motor 24 rotates by a predetermined amount corresponding to the measurement result of the picture area ratio measuring device 20 and then stops. At this automatic setting (initial setting) stage, a gap is set between the ink source roller 16 and the ink blade 21 based on the measurement results of the picture area ratio measuring device 20.

■The CPU 25B calculates the number of diodes 29 to be lit on the corresponding display section 27 based on the detected amount of the potentiometer for each ink band in (2) above, sends the signal to the display section 27, and displays the number of diodes 29 for the corresponding display section 27. Lights up stationary.

■The number of lit diodes 29 calculated in the above ■ is CP
It is also output from U25B to storage section 25E and stored therein.

■Proof printing is performed during the automatic setting step according to ■ above. As a result, the test printed paper is held in the printed paper holding section 26A of the remote control device 26.

(2) The operator compares the printed paper with the reference screen and operates each operating section 28 to correct the gap between the ink source roller 16 and the ink blade 21 so that the shading of the two matches. That is, when the selected up button 30 or down button 31 is pressed on each operation section 28, the operation signal is sent to the CPU 25B. The CPU 25B rotates the motor 24 of the corresponding ink band by a specified amount in a specified direction via the motor drive control unit 25G, and outputs a motor stop signal after rotating the motor 24 by a specified amount based on the feedback signal from the corresponding potentiometer 23. . During this gap correction work, the CPO 25B changes the number of lighting diodes on each display section 27 that displays the currently set amount of each ink regulator 22, depending on the amount detected by the potentiometer 23. Further, the CPU 25B simultaneously retrieves the memory contents stored in the above-mentioned step (3) from the storage section 25E, and extracts the memory contents, that is, the highest diode among the number of diodes corresponding to the setting amount in the automatic setting stage of each ink regulator 22. 29 continues to flash.

Next, the operation of the above embodiment will be explained.

■ After a trial print, operate the ink adjuster 22 of each ink band to correct the gap, and then perform a test print again. When you want to further correct the gap to adjust the density of a certain ink band, the display unit 27 will display the settings for each ink adjustment. In addition to the current setting amount of the child 22, the setting amount at the previous stage (ie, automatic setting stage) can also be displayed. Therefore, the operator recognizes the previous gap correction amount from the display state of the display section 27, understands the relationship between the previous gap correction amount and the resulting density change amount, and uses this understanding result as the basis for the next correction. Thereby, it is possible to accurately determine the next gap correction amount to be added in order to obtain the desired density.

■As mentioned in (■) above, since the relationship between the previous gap correction amount and the resulting density change amount can be grasped, the density change trend before and after gap correction in all ink band directions can be analyzed at a glance, and the picture area ratio measurement device 20 can measure Accurately grasp the accuracy, the adjustment accuracy of the ink supply amount adjusting device 19, and the abnormal tendency of the conversion coefficient used when converting the measurement result of the picture area ratio measuring device 20 into the motor drive amount, and accurately perform the gap correction work. Can be done.

■When operating the operation unit 28 to sequentially adjust the density of an arbitrary ink band based on the result of trial printing, the display unit 27
can also display the setting amount before and after the operation of each ink band. Therefore, which operating section 2 out of the many operating sections 28?
It is possible to easily distinguish whether 8 has already been used as the operating section, and the current gap adjustment amount applied to the operating section 28 can also be accurately confirmed, allowing the gap correction work to be performed quickly and accurately.

According to the present invention, as in items 1 to 3 above, the operator can efficiently adjust the ink supply amount for each ink zone, and the ink supply amount can be adjusted until printing results with appropriate shading are obtained. Able to perform work rationally.

In the above embodiment, when repeating gap correction and test printing two or more times, the main controller 25 stores the setting amount of each ink regulator 22 in the previous gap correction stage in the storage unit 25E, and Each ink regulator 22 for gap correction
The stored data may also be displayed on the display section 27 during the adjustment operation. At this time, the display unit 27 may continue to display a blinking display indicating the set amount of each ink regulator 22 in the automatic setting stage described above.

Further, in implementing the present invention, the ink supply amount adjusting device does not need to be automatically set based on the measurement results of the picture area ratio measuring device 20. The setting amount of each ink regulator 22, which is initially set completely by intuition by the operator while looking at the screen to be printed (original picture, photographic film, already printed paper), is followed by a u-gap correction stage using display marks, display storage devices, etc. It may be displayed continuously until the end of the gap correction step, or it may be displayed again at the subsequent gap correction stage.

In addition, in implementing the present invention, the set amount of each ink regulator 22 is stored in a storage device or the like when the operator corrects the gap between the ink source roller 16 and the ink blade 21 several days ago and establishes a proper printing state. The stored data may then be redisplayed several days later when adjusting each ink regulator 22 for gap correction.

In addition, in implementing the present invention, when adjusting each ink regulator 22, each ink regulator 22 prior to the adjusting operation
Two or more set amounts at two or more arbitrary points in time may be displayed in a superimposed manner, such as the previous set amount and the previous set amount.

Furthermore, in implementing the present invention, the timing at which the display section displays the setting amount of a predetermined specific setting stage may be before, during, or after the adjustment of the ink regulator in the current setting stage. good.

In addition, in carrying out the present invention, the display section consists of a set amount display zone for a specific setting stage and a set amount display zone for the current setting stage, and two groups of light emitting diodes arranged in a bar shape are arranged in parallel. , each of both zones may be configured by each of both diode groups.

Further, in implementing the present invention, the display section may be an analog display instead of a digital display using the light emitting diode 29 or the like.

Further, the current stage setting amount and the specific stage setting amount of the ink regulator 22 may be displayed by two-hand display using different display hands.

Furthermore, in carrying out the present invention, the ink regulator may be modified by deforming each part of the ink blade as in the embodiment described in 1.
It does not change the gap in each ink zone of the ink blade on the ink source roller, but for example,
It may be constructed of a plurality of scraping rollers arranged in the longitudinal direction of the ink source roller as described in Japanese Patent No. 82.

[Effects of the Invention] As described above, according to the present invention, the operator can efficiently adjust the ink supply amount for each ink zone, and streamline the ink supply amount adjustment work until printing results with appropriate shading are obtained. It can be done.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a control system diagram showing an embodiment of the invention, Fig. 3 is a perspective view showing an example of a printing machine, and Fig. 4 is a display unit. FIG. 5 is a schematic diagram showing the relationship between the set amount of the ink regulator and the display state of the display section, and FIG. 6 is a plan view showing an example of the operating state of the display section according to the present invention. Fig. 7 shows a conventional example 16... Ink source roller, 19... Ink supply amount adjusting device, 20... Image area ratio measuring device, 22...
...Ink regulator, 25E...Storage section, 27...Display section, 28...Operation section. Agent Patent Attorney Osamu Shiokawa Figure 3 Figure 4 Figure 5

Claims (3)

[Claims] (1) a plurality of ink regulators that adjust the amount of ink supplied to each ink zone divided in the longitudinal direction of the ink source roller;
In an ink supply amount adjustment device for a printing press that has a display section that displays the current setting amount of each ink regulator and an operation section that adjusts each ink regulator, the display section displays the current setting amount of each ink regulator. An ink supply amount adjusting device for a printing press, characterized in that the set amount of each ink regulator at a predetermined specific setting stage prior to the setting stage can be displayed together with the display of the current set amount of each ink regulator. (2) In claim 1, the display section is automatically set based on the result of measuring the picture area ratio of the print target screen by the picture area ratio measuring device prior to the current setting stage of each ink regulator. An ink supply amount adjusting device for a printing press, characterized in that the set amount of each ink regulator at each stage can be displayed together with the current set amount of each ink regulator. (3) In claim 1, the display section displays the set amount of each ink regulator at the immediately preceding setting stage prior to the current setting stage of each ink regulator, An ink supply amount adjusting device for a printing press, characterized in that it can be displayed together with a display.