JPH058376A - Ink pre-measurement method and device for offset printing machine - Google Patents

Abstract

PURPOSE:To shorten a time required to reach a desired density and reduce the occurrence of unsatisfactory printing and paper waste by a method wherein image data at the completion of a printing operation is compared with image data of a printing plate to be printed next, and in accordance with a difference value based on this comparison, an ink amount adjusting mechanism is controlled. CONSTITUTION:An ink amount remoto adjusting device 1 controls a printing part 3 on the basis of image data inputted from a scanner (a device for reading an image area ratio of a printing plate) 2. At this time, in the printing part 3, an ink fountain part 12 incorporates a driver for adjusting an ink amount. The ink of the adjusted amount is fed to an ink roller part 10 through an ink fountain roller 13 to be supplied to an image part of a printing plate 21a. In this construction, in the ink amount remoto adjusting device 1, the image data of the printing plate 21a imparted to the ink amount adjusting mechanism at the completion of a printing operation is compared with the image data of a printing plate 21b to be printed next. In accordance with a difference value of the image data based on this comparison the device 1 controls an ink amount adjusting mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation of printing a printed matter on an offset printing machine, and after the pre-printing work, the ink supply amount necessary for printing the next different printed matter at a desired ink density is shortened. The present invention relates to a method for adjusting and controlling the ink supply amount to reach the target.

[0002]

2. Description of the Related Art In multicolor printing in which printing is completed at one time by multicolor printing, a printing method in which the number of colors and each color are fixed to each printing unit are very high in productivity, and therefore printing companies have recently been using them. Is common. After finishing the printing work, the operator manually adjusts the ink metering device by looking at the plate of the next printed matter or the proof-printed paper (calibration sample), or the pattern data obtained by scanning the plate surface by optical means. To the printing machine and set the ink supply amount. The latter is a method known as an ink presetting device and adjusts the opening of an ink metering mechanism that sets the thickness of the ink film arranged in the ink fountain. As described above, the adjustment method and the correction control method for obtaining the final target density during the current printing based on the data obtained from the plate or printing proof paper related to the print to be printed are known, but the current print No adjustment was made in consideration of the ink data of the printing just before printing, and no actual printing was started after the ink preliminary adjustment was set.

[0003]

However, the ink blur of the ink metering mechanism that determines the ink supply amount required for the next printing.
It takes a considerable amount of time from the control of the opening degree until the print density on the printing surface reaches the target quality state. The main reason is that the ink prepared in the previous printing remains on the printing press. In a multi-color printing machine, the color is generally fixed to the printing unit and used.
In many cases, the next printing is started without completely cleaning. Therefore, the ink just printed remains in the roller group. When the amount of ink adjustment is greatly different between the previous printing and the next printing, it takes a lot of time to reach the desired printing density, and in the meantime a large amount of defective printing and creases occur, which is uneconomical. I was waking up.

It is an object of the present invention to shorten the time required to reach a set desired density as much as possible to reduce the occurrence of defective printing and scraping.

[0005]

[Means for Solving the Problems] The above-mentioned conventional problem is that during the adjustment, the only consideration was how to correct or adjust the ink supply amount during printing. Distribution state of the remaining ink amount on the printing machine,
And that effect is not considered at all.

The present invention relates to a printing machine equipped with an ink metering device for adjusting the thickness of an ink film of an ink discharge roller provided in the printing unit for each area and controlling the ink film for each area. , The pattern data given to the ink metering mechanism at the end of the immediately preceding printing operation is compared with the pattern data of the print to be printed next, and based on the difference value of the pattern data obtained by the calculation. A method for controlling an ink metering mechanism and an apparatus for performing the method. The details are as follows.

In the method of the present invention, an ink fountain is provided based on the distance between the metering mechanism provided in the ink fountain of the offset printing machine and provided at each of the intervals and the surface of the ink ejection roller based on the pattern data. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing it for each area of, the pattern data or the recorded data of the print to be printed next obtained from the printing plate, film or printing calibrated paper is recorded. Compare the pattern data of the same print with the pattern data at the end of the previous printing operation, find the difference, and divide this difference by the total number of areas in the ink fountain to equal the pattern data for each area to be printed next. The feature is that the metering mechanism of the ink fountain is controlled by the added new set pattern data.

Alternatively, the pattern data of the printed matter to be printed next obtained from the printing plate, the film or the print proof paper or the recorded pattern data of the same printed matter is compared with the pattern data at the end of the immediately preceding printing work, Calculate the difference, divide this difference by the total number of areas in the ink fountain, and add it to the pattern data for each area to be printed next. Print,
After that, the feature is that the metering mechanism of the ink fountain is re-controlled by the pattern data for each final target area.

Alternatively, the pattern data of the printed matter to be printed next obtained from the printing plate, the film, or the print proof paper or the recorded pattern data of the same printed matter is compared with the pattern data at the end of the immediately preceding printing work, Find the difference, increase or decrease the difference according to the conditions set in advance by the magnitude of this difference,
Characteristic of controlling the ink fountain adjustment mechanism with new setting pattern data that is obtained by dividing the value of the increased / decreased difference pattern data by the total number of areas of the ink fountain and adding it equally to the pattern data of each area to be printed next. And

Alternatively, the pattern data of the next print to be printed or the recorded pattern data of the same print obtained from the printing plate, the film or the print proof paper is compared with the pattern data at the end of the immediately preceding printing operation, Find the difference, increase or decrease the difference according to the conditions set in advance by the magnitude of this difference,
The value obtained by dividing the increased / decreased difference pattern data by the total number of areas in the ink fountain is added equally to the pattern data for each area to be printed next. Is printed, and thereafter, the metering mechanism of the ink fountain is controlled by the image data for each final target area.

Alternatively, pattern data of a block composed of a plurality of adjacent areas of a printed matter to be printed next obtained from a printing plate, film or print proof paper, or similar pattern data of the same printed matter and the immediately preceding printing. The difference was calculated by comparing with the pattern data of the blocks having the same positional relationship at the end of the work, and the difference was divided by the number of areas in the block, and the value was added equally to the pattern data in the corresponding area to be printed next. The feature is that the metering mechanism of the ink fountain is controlled by the new set pattern data.

Alternatively, the pattern data of a block consisting of a plurality of adjacent areas of a printed matter to be printed next obtained from a printing plate, a film, or a proofreading sheet, or similar pattern data of the same printed matter and the immediately preceding printing. The difference was calculated by comparing with the pattern data of the blocks having the same positional relationship at the end of the work, and the difference was divided by the number of areas in the block, and the value was added equally to the pattern data in the corresponding area to be printed next. It is characterized by controlling the ink fountain adjustment mechanism with a new set pattern data to print a fixed amount, and then controlling the ink fountain adjustment mechanism with the final target pattern data for each area. .

Alternatively, pattern data of a block composed of a plurality of adjacent areas of a printed material to be printed next obtained from a printing plate, film or printing proof paper or similar pattern data of the same printed material and the immediately preceding printing Comparing with the pattern data of the blocks having the same positional relationship at the end of the work, the difference is obtained, the difference is increased or decreased according to a predetermined condition according to the magnitude of this difference, and the increased or decreased difference pattern data is stored in the block. It is characterized in that the ink fountain metering mechanism is controlled by new set pattern data obtained by equally adding a value divided by the number of areas to the pattern data in the corresponding area to be printed next.

Alternatively, pattern data of a block composed of a plurality of adjacent areas of a printed matter to be printed next obtained from a printing plate, a film, or a proofreading sheet, or similar pattern data of the same printed matter and the immediately preceding printing. Comparing with the pattern data of the blocks having the same positional relationship at the end of the work, the difference is obtained, the difference is increased or decreased according to a predetermined condition according to the magnitude of this difference, and the increased or decreased difference pattern data is stored in the block. The value divided by the number of areas is added to the pattern data in the corresponding area to be printed next, and the new setting pattern data is used to control the ink fountain metering mechanism to perform a certain amount of printing, and then to the final target. The feature is that the metering mechanism of the ink fountain is controlled by the pattern data for each area to be used.

Furthermore, the ink fountain has a metering mechanism capable of metering the ink fountain at regular intervals, and the ink fountain of the offset printing machine capable of adjusting the thickness of the ink film of the ink take-out roller for each area is adjusted. The measuring device is a means for inputting and storing pattern data, a calculating means for comparing and calculating the pattern data at the end of the immediately preceding printing work and the pattern data to be printed next, and an ink fountain according to the output of the calculating means. It is characterized by comprising drive means for adjusting the adjusting mechanism.

Further, the ink fountain has a metering mechanism capable of metering the ink fountain at regular intervals, and the ink fountain of the offset printing machine capable of adjusting the thickness of the ink film of the ink take-out roller for each area. A measuring device that scans a printing plate, film or proofreading paper to measure the pattern area ratio for each area or the entire area, and the ink necessary for printing the image area ratio corresponding to this. A conversion means for converting the set value to be supplied to the metering mechanism for supplying, a means for storing the pattern area ratio or the set value to be supplied to the metering mechanism, and a pattern area ratio or the metering mechanism at the end of the immediately preceding printing. And a drive means for adjusting the ink fountain adjusting mechanism in accordance with the output of the calculating means, and the setting area value to be printed next or the set value given to the adjusting mechanism. And

In the present specification, the pattern data is obtained by electro-optically scanning a printing plate used for printing, a film on which a document used to make the printing plate is printed, or a proof-printed sheet with a scanner. It means a ratio of the character or the image to the whole (hereinafter referred to as a pattern area ratio), or a set value given to the ink amount adjusting mechanism in order to supply necessary and sufficient ink when printing at this pattern area ratio.

The term "all areas" does not mean all the areas provided in the ink fountain of a printing machine, but all the areas that are used according to the size of the plate, and exclude the areas that are not used. I shall.

[0019]

[Function] Taking into account the amount of ink remaining on the printing machine at the end of the printing operation, the theoretically required amount of ink is increased or decreased for the next work, and preliminary adjustment is performed, and after the test printing operation, the ink adjustment is divided into areas. By setting the blade opening amount of the mechanism to the final control target value, the time required to reach the desired print density is shortened as a result.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic view showing the appearance of an apparatus for carrying out the present invention, FIG. 2 is a block diagram showing an example of the apparatus for carrying out the present invention, and FIG. 3 is a side view of an ink fountain of a printing machine. FIG. 4 is a plan view of the ink fountain, FIG. 5 is a view showing an example of an operation section and a display section of the ink remote metering device applied to FIGS. 3 and 4, and FIG. 6 is a display state of the display section in the present invention. It is a figure which shows an example.

The apparatus shown in FIG. 1 is an ink remote metering device (1) for controlling and adjusting the whole of the present invention, a printing plate pattern area ratio reading device (hereinafter referred to as a scanner).
(2) shows the printing unit (3), in which the pattern area ratio reading device (3) measures the pattern data of the printing plate (21b) to be worked next, and the data is measured directly or magnetically. It is indirectly applied to the input section of the ink remote metering device by a medium such as a card, a magnetic tape, or a floppy disk.

Although only one printing unit (3) is shown, in the case of a multicolor machine, the same units are arranged by the number of colors. Further, the illustration of the paper feed unit and the paper discharge unit required for the printing machine is omitted. The ink fountain unit (12) has a built-in drive device for adjusting the amount of ink. The metered ink passes through the ink source roller (13) and then the ink roller unit (1
0) and is supplied to the pattern portion of the plate (21a) wound around the circumferential surface of the plate cylinder (PS). Edition (21a)
Indicates the one immediately after the end of printing. The design is a rubber cylinder (B
It is transferred to the printing paper on the impression cylinder (IN) via L).

FIG. 2 is a block diagram showing the ink remote device and the peripheral device, which is composed of the following components. A control circuit, a comparison operation circuit, a circuit for converting a pattern area ratio into a set value given to a metering mechanism, other main control unit CPU (4) for overall control, and a storage section (5) for storing control data. , (5a), (5b), depending on the adjustment amount of the input unit (11), the measurement data or the operation unit (9) that receives the measurement result data of the plate obtained from the scanner (2) and transfers it to the CPU. Metering mechanism corresponding to each ink area placed on the ink fountain (12) of the printing unit (hereinafter,
Slider motor (1)
4) a driving unit (6) for moving the potentiometer (16) for detecting the adjustment amount, and feeding back this amount for CP.
A / D converter (7) for transmitting to the U section, display section (8) for displaying the adjustment amount and the adjustment result of the immediately preceding printing operation for the selected one printing unit, each ink adjusting device of the selected printing unit Operation unit (9) provided with an operation switch for increasing or decreasing the desired amount by a sensor (16
a).

FIG. 3 is a side sectional view of the ink metering device, in which ink is stored between the ink fountain (12) and the original roller (13) rotated by a motor (not shown). C
The drive amount given by PU (4) is output to the drive unit (6) to rotate the slider-motor (14) in the required direction. (15) is a minute manual adjustment screw. The rotation is transmitted to the metering member (18) through the gear reduction device (17) and converted into forward and backward movement. In the connecting spindle (18a), this movement causes a blade (1) of a metering mechanism, that is, a slider, which determines a gap between the ink source roller and each ink area.
9). The amount of ink supply is determined by the size of this gap. Potentiometer to the CPU controller
The detected amount is constantly fed back by (16), and the amount of operation is controlled by the scanner, the amount of operation by the operation unit switch, or the data of the storage units (4), (5) stored in advance such as repeat order. .

FIG. 4 shows a part of the plan view of the ink metering device, and the numbers of the components concerned are the same as those in FIG.
The slider blade drive device is provided in an amount of 30 to 40 per unit according to the effective printing width of the printing press.

FIG. 5 shows a display unit and an operation unit of an ink remote metering device (commonly called ink remote controller) (1).
By pressing the number of the printing unit selection switch (28), the corresponding printing unit can be displayed and operated.
(29) is a color board on which a print sample is placed. The slide unit number (30) according to the original size of the paper size (7th
(Refer to the drawing) is marked and the corresponding display units and respective switches are arranged vertically. (31) is a switch for selecting whether to use the control method of the present invention. If there is not much difference between the patterns before and after the printing work, you can turn it off and adjust it in the conventional way. (32) is a number input switch for manually inputting the print setting number when this control method is used, and (33) is for starting the ink metering device.

The amount of movement of the slider, in other words, the original
The gap between the slider and slider blade is L in the form of a bar graph.
It can be seen as the ED lighting (27). The number of lights increases or decreases in order from the bottom according to the size of the gap, and no light is emitted at zero gap and all light emitting diodes are turned on at maximum gap.

This quantity can also be read with the two-digit LED number of (25). This value is stored in the storage unit (5
given by a). The maximum clearance is 100% of the pattern area
Corresponding to, "99" and zero gap are displayed as "00".
The numeral (26) on the same display shows the set value given to the in-pot metering mechanism of the immediately preceding printing operation. This value is given from the storage unit (5) in FIG.

Reference numerals (22), (23) and (24) are manual operation buttons and are composed of an up button (23) for increasing the clearance, a down button (24) for decreasing the clearance, and a lock button (22) for enabling manual operation. Has been done. This manual operation does not require the use of a scanner, and an experienced operator can look at the ink data of the immediately preceding printing and the printing plate, film or printing calibrated paper to be printed next, and experience There is a case where it is possible to know whether effective ink pre-adjustment can be performed by adjusting, and it is suitable to apply in that case.

FIG. 6 shows a display according to the conventional metering method (preset) up to a to j among a large number of divided slider blades. 6 (a), (25a) is the data of the previous work plate (21a), and (27a) is the LED bar.
It is a display. In FIG. 6B, (25b) is the data of the plate (21b) for the next work, (27b) is the LED bar display, and the data is stored in the storage unit. However, the data shown in FIG. 6 is erased when the next work is started. As described above, in the conventional ink preset control method, the amount of ink on the roller group of the immediately preceding printing unit is not taken into consideration at all, and the data of the next printing plate is directly input to perform the metering control (preset). Was there.

FIG. 7 schematically shows an operating mode of an embodiment corresponding to claim 3 of the present invention.
Is No. a to j. The data of the plate (21a) of the immediately preceding work is stored in the storage unit (5) of FIG. 7, and the data of the plate (21b) of the next work is stored in the storage unit (5a) before and after the printing work. The difference of the data is calculated according to a certain condition, and the increased or decreased numerical value and the value of the preliminary adjustment amount are stored in the data of the next printing plate in the storage section (5b).

Data before and after printing is displayed in (2) of the display unit (8).
The data to be printed in 5) is a 2-digit LED.
As a numerical value, the data of the previous printing is displayed in (26). (27) shows the calculated numerical value of the preliminary adjustment as an LED bar display.

The data calculation in this embodiment is performed by the CPU (4) in the control unit of the ink remote metering device. Table 1 shows the calculated values. (D) and (E) in this table are due to different conditions in the calculation. (D) is the preliminary adjustment value with the difference value as it is, and (E) is half the difference value with the preliminary adjustment value. It is a value. In the case of the embodiment shown in FIG. 7, (D) is adopted. When the value of (D) exceeds 100, it is set to 100, and when it is a negative value, it is set to 0.

The procedure for carrying out the method of the present invention will be described in detail below. The printed plate (21a) on the printing machine of FIG. 1 is removed and the next work plate (21b) is mounted on the plate cylinder. The pattern data of the plate (21b) is usually measured in advance by the scanner (2), and the ink remote metering device (1) is used.
Is controlled by the data stored in the storage unit (5). In order to simplify the understanding of the present invention, the description will proceed assuming that the number of blades of the dividing slider, which is originally many, is one unit. In this embodiment, the maximum opening (skimmer) is 100 and the minimum clearance is zero (0). The pattern area ratio and the opening of the slider blade may not be linearly proportional, and in order to compensate for this, the pattern area ratio is converted to the setting value of the metering mechanism, that is, the opening size of the slider blade. It is convenient to leave it.

FIG. 7 shows a state of internal calculation of the control unit (1) and an operating state of the display unit (8) according to the embodiment according to the present invention. The operator removes the plate (21a) for which printing has been completed and attaches the plate (21b) for the next work to the printing machine. The pattern data of the plate (21b) is read by the scanner (20) and stored in the storage section (5) of FIG. 2 prior to the work. The operators (21a) and (2
Whether the control of the present invention is used or not can be selected by looking at the pattern of 1b) with the switch (31) in FIG. When this switch is pressed, the CPU (4) of the main control section causes the current slider value,
In other words, data indicating the state of ink distribution in the width direction on the ink-color group is stored in the storage unit (5). In advance C
Comparison and calculation are performed according to the conditions written in the ROM of the PU, and these numerical values are stored in the storage unit (5a).

[0036]

[Table 1]

Table 1 shows the numerical values of the slider numbers a to j. (A) is the value of the immediately preceding printing work, and (B) is the value of the next work. The calculation unit of the CPU calculates the difference value B-A between the value at the end of the immediately preceding printing work and the value at the next printing for each area, that is, each slider unit, and divides the total value and the total value by the number of sliders. Calculate the average value. This average value is added evenly to the data of each slider to be printed next, as it is, or as a value obtained by multiplying a certain coefficient according to conditions. Table 1 (D) is an example when the difference value is used as it is. Then, the calculated value (D) becomes a numerical value of the preliminary adjustment amount and is read into the storage section (5b) of the control section.

More specifically, the slider- (a) has a previous value of 5 and the next plate has a value of 40, and the difference is +35. The slider (b) has a previous value of 10 and the following value. Since the plate value is 60, this difference is +50. This operation is performed up to the slider (j), and the total value +
60 is calculated, and this total value +60 is divided by the number of sliders 10 to calculate the average value +6. Next, a value obtained by evenly adding this average value to the value of each slider at the time of printing next is the preliminary adjustment value (D). That is, regarding the slider (h), the previous value is 70 and the next value is 60, and the difference is -10, but the value of the preliminary adjustment amount according to the present invention is 66. The preliminary measurement amount (D) is recorded in the storage unit (5b) of the control unit.

At this time, the state of the display section (8) is as shown in the upper part of FIG. (25) shows the value of the next actual printing work to be performed, and (26) shows the value of the immediately preceding printing work.
The LED bar graph display of (27) shows the numerical value (D) of the preliminary adjustment.

In this way, the values of the preliminary adjustment amounts of all sliders and all printing units are calculated, and the push buttons (3
3) The preset of each slider is started. The data of the storage unit (5b) is output to the drive unit (6) of the main control unit and each slider motor is rotated in the set direction so that the value fed back by the potentiometer (16) is changed. The motor is stopped when the values of the sliders in the memory match, and the setting for the preliminary adjustment of the ink fountain's ladder is completed.

Next, the operator sets the number of sheets to be printed by preliminary measurement. According to this control according to the present invention, the preliminary adjustment number is 60 to 90 depending on the pattern difference. Based on the conventional method, the number of sheets until the target ink density is reached by measuring the ink directly with the next plate pattern data is about 3
It is around 00. The number of pre-measured sheets is input by the number switch of (32), the printing machine is started, paper is fed from the paper feeding section, and printing is started. The number of times of printing cylinder insertion is detected by the sensor (16a) in FIG. 2 and provided to the controller. When the CPU determines that this number matches the set number in (32), the value of the value (B) of the next main printing operation, which is the final control target value, is taken out from the storage section (5a) and is driven by the drive section (6). Output to. Similar to the above description, each slider-motor rotates in the necessary direction for the difference between the final control target value and the preliminary adjustment value, and stops at the final control target value.

The numerical value of (E) in Table 1 is another condition, that is, (B)
Half of the average value of the difference values of -A) is increased or decreased to the value B of the next work. In this way, you can not only increase and decrease uniformly, but you can also adjust the amount of increase or decrease according to the magnitude of the difference,
Further, if a ROM in which various conditions are written is used in the CPU, different control can be performed. Further, instead of calculating and preliminarily adjusting each of a large number of divided sliders, the sliders can be grouped into certain blocks according to the density distribution of the pattern and controlled by the magnitude relation of the total value of arbitrary blocks. Therefore, the optimum condition is derived from the data before and after each slider value written in the CPU, and the preliminary metering control is performed to realize an efficient and highly productive printing operation.

[0043]

[Table 2]

Table 2 shows an example in which ten sliders are divided into three blocks and controlled. When the calculated preliminary adjustment value exceeds 100, it is set to 100, and when it is below 0, it is set to 0. To implement this method, press switch G in Figure 5, then which slider
Press one of the switches (40) corresponding to the sliders to select one block. However, one block must be adjacent. The switch K is pressed and determined every time one block is determined.

[0045]

[Table 3]

Table 3 shows a case in which there is a difference in the comparison between the areas, but there is no difference as a whole. In this case, the sum of the difference values becomes zero, and there is a considerable difference depending on the area.
At this time, the changeover mechanism (not shown) in the control unit (1) automatically controls the metering mechanism for each area based on the difference value for each area.

[0047]

By performing the preliminary adjustment control according to the present invention, the time required to reach the final control target density value is shortened as compared with the conventional method, so that the preparation time is shortened and the waste paper is lost. It is a very efficient and effective control method that can obtain the decrease of the output and the increase of the productivity.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing the external appearance of an apparatus for carrying out the present invention.

FIG. 2 is a block diagram showing an example of an apparatus for implementing the present invention.

FIG. 3 is a side sectional view of an ink fountain of a printing machine.

FIG. 4 is a plan view of an ink fountain.

5 is a diagram showing an example of an operation unit and a display unit of the ink remote metering device applied to FIGS. 3 and 4. FIG.

6 (a) and 6 (b) are diagrams showing an example of the operating state of the display unit in the conventional method.

FIG. 7 is a diagram showing an example of an operating state of a display unit according to the present invention.

[Explanation of symbols]

1 Ink remote metering device 2 scanner 3 printing units 4 CPU 5, 5a, 5b storage unit 8 Display 9 Operation part 19 Ink fountain metering mechanism (slider blade) 25 Data to be printed next 26 Preprint data 27 Preliminary metering data

Claims (15)

[Claims] 1. An ink fountain area based on the pattern data based on the distance between a metering mechanism provided in each ink fountain area of an offset printing machine and having a constant interval and the surface of an ink discharge roller. In the ink metering method that adjusts the thickness of the ink film of the ink take-out roller by changing each time, the pattern data of the print to be printed next obtained from the printing plate, film or printing calibrated paper or the same recorded data The pattern data of the printed matter was compared with the pattern data at the end of the immediately preceding printing operation, the difference was obtained, and the value obtained by dividing this difference by the total number of areas in the ink fountain was added equally to the pattern data for each area to be printed next. An ink pre-measurement method for an offset printing press, which is characterized by controlling the ink fountain adjustment mechanism with new set pattern data. 2. An ink fountain area for each ink fountain based on a pattern between a metering mechanism provided in the ink fountain of an offset printing machine and provided at intervals of a constant interval, and a surface of an ink ejection roller. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing to, the pattern data of the print to be printed next obtained from the printing plate, film, or proofreading paper or the same recorded print The new design pattern is obtained by comparing the pattern data of No. 1 and the pattern data at the end of the immediately preceding printing operation, obtaining the difference, and dividing this difference by the total number of areas in the ink fountain to the pattern data to be printed next. Data is used to control the ink fountain metering mechanism to perform a certain amount of printing, and then the ink fountain metering mechanism is re-controlled based on the final target pattern data for each area. Ink pre-measurement method for printing machines. 3. The ink fountain area of the offset printing machine is provided for each ink fountain area based on the pattern data, which is the distance between the metering mechanism provided for each area at constant intervals and the surface of the ink delivery roller. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing to, the pattern data of the print to be printed next obtained from the printing plate, film, or proofreading paper or the same recorded print Image data and the pattern data at the end of the previous printing operation are compared to obtain the difference.The difference is increased or decreased according to a predetermined condition according to the size of the difference, and the increased or decreased difference pattern data is stored in the ink fountain. The offset printing machine is characterized by controlling the ink fountain metering mechanism with new set pattern data obtained by adding the value divided by the total number of areas to the pattern data for each area to be printed next. Nki pre-metering method. 4. An ink fountain area of an offset printing press is provided for each ink fountain area on the basis of a pattern between a metering mechanism provided in each of the ink fountain rollers at a constant interval and the surface of an ink ejection roller. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing to, the pattern data of the print to be printed next obtained from the printing plate, film, or proofreading paper or the same recorded print Image data and the pattern data at the end of the previous printing operation are compared to obtain the difference.The difference is increased or decreased according to a predetermined condition according to the size of the difference, and the increased or decreased difference pattern data is stored in the ink fountain. A value that is divided by the total number of areas is added equally to the pattern data for each area to be printed next, and the fixed amount of printing is performed by controlling the ink fountain metering mechanism with the new set pattern data, and then the final printing. A method for preliminarily measuring ink in an offset printing press, characterized in that the ink fountain adjustment mechanism is controlled by pattern data for each target area. 5. The ink fountain area of the offset printing press is provided for each area of the ink fountain based on the pattern data based on the distance between the metering mechanism provided for each area of the ink fountain roller and the surface of the ink discharge roller. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing to, a block consisting of multiple areas adjacent to the next printed material obtained from the printing plate, film or proofread paper is used. The pattern data or similar pattern data of the same printed matter that has been recorded is compared with the pattern data of the block that has the same positional relationship at the end of the immediately preceding printing operation, and the difference is calculated, and this difference is expressed as the number of areas in the block. The offset printing machine is characterized by controlling the ink fountain metering mechanism with new set pattern data obtained by adding the divided value to the pattern data in the corresponding area to be printed next. Nki pre-metering method. 6. An ink fountain area for each area of the ink fountain of an offset printing machine based on the pattern data based on the distance between a metering mechanism provided for each area at a constant interval and the surface of the ink ejection roller. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing to, a block consisting of multiple areas adjacent to the next printed material obtained from the printing plate, film or proofread paper is used. The pattern data or similar pattern data of the same printed matter that has been recorded is compared with the pattern data of the block that has the same positional relationship at the end of the immediately preceding printing operation, and the difference is calculated, and this difference is expressed as the number of areas in the block. The divided value is added equally to the pattern data to be printed next to control the ink fountain metering mechanism to perform a certain amount of printing, and then the final target area is printed. A method for preliminarily metering ink in an offset printing press, characterized by re-controlling the ink fountain metering mechanism with pattern data for each area. 7. An ink fountain area for each ink fountain based on the pattern data, which is the distance between a metering mechanism provided in the ink fountain of the offset printing machine and provided at intervals of a constant interval, and the surface of the ink delivery roller. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing to, a block consisting of multiple areas adjacent to the next printed material obtained from the printing plate, film or proofread paper is used. The pattern data or similar pattern data of the same printed matter that has been recorded is compared with the pattern data of the block having the same positional relationship at the end of the immediately preceding printing operation, the difference is obtained, and the predetermined condition is determined by the magnitude of this difference. The above difference is increased / decreased by, and the value obtained by dividing the increased / decreased difference pattern data by the number of areas in the block is added to the pattern data in the corresponding area to be printed next. An ink pre-measuring method for an offset printing machine, characterized by controlling the ink fountain adjusting mechanism with pattern data. 8. An ink fountain area for each ink fountain based on a pattern between a metering mechanism provided in the ink fountain of an offset printing machine and provided at intervals of a constant interval, and a surface of an ink ejection roller. In the ink metering method that adjusts the thickness of the ink film of the inking roller by changing to, a block consisting of multiple areas adjacent to the next printed material obtained from the printing plate, film or proofread paper is used. The pattern data or similar pattern data of the same printed matter that has been recorded is compared with the pattern data of the block having the same positional relationship at the end of the immediately preceding printing operation, the difference is obtained, and the predetermined condition is determined by the magnitude of this difference. The above difference is increased / decreased by, and the value obtained by dividing the increased / decreased difference pattern data by the number of areas in the block is added to the pattern data in the corresponding area to be printed next. An offset printing machine characterized by controlling the ink fountain metering mechanism with data to perform a certain amount of printing, and then re-controlling the ink fountain metering mechanism with the image data for each final target area. Ink pre-measurement method. 9. All pattern data of a printed matter to be printed next obtained from a printing plate, film or print proof paper or all recorded pattern data of the same printed matter and all pattern data at the end of the immediately preceding printing work. When a difference is obtained by comparison, and this difference is zero or extremely small, and when comparing the pattern data of the print to be printed next with the pattern data at the end of the immediately preceding printing work, in one or more areas If the difference is more than a certain value, the metering mechanism for each area is based on the difference between the pattern data for each area of the printed matter to be printed next and the pattern data for each area at the end of the immediately preceding printing operation. The method according to claim 1, wherein a predetermined amount of printing is controlled to automatically control the metering mechanism based on the pattern data of each area of the printed matter to be printed next. 2, request Item 3, claim 4,
An ink pre-measuring method for an offset printing machine according to claim 5, claim 6, claim 7, or claim 8. 10. The pattern data of the printed matter to be printed next is compared with the pattern data at the end of the immediately preceding printing work, and when the former value is larger than the latter value, it is larger than the former value.
When the former value is smaller than the latter value, the metering mechanism is controlled by the pattern data that is smaller than the former value to print a certain amount, and then the metering mechanism is controlled by the pattern data of each area to be printed next. The ink pre-measurement method for an offset printing machine according to claim 9, characterized in that the control is performed again. 11. The pattern data is a pattern area ratio or a set value given to a metering mechanism for supplying ink necessary for printing corresponding to the pattern area ratio. The ink pre-measurement method for an offset printing machine according to claim 2, claim 3, claim 4, claim 5, claim 6, claim 7, claim 8, claim 9, or claim 10. 12. An ink fountain of an offset printing machine, which has a metering mechanism capable of metering the ink fountain at regular intervals and is capable of adjusting the thickness of the ink film of the ink ejection roller for each area. A device for inputting and storing pattern data, a device for comparing and calculating the pattern data at the end of the immediately preceding printing work and the pattern data to be printed next, and an ink fountain adjustment according to the output of the calculating device. An ink pre-measuring device for an offset printing machine, which comprises a driving means for adjusting a quantity mechanism. 13. An ink fountain of an offset printing machine, which has a metering mechanism capable of metering the ink fountain at regular intervals and is capable of adjusting the thickness of an ink film of an ink ejection roller for each area. A device for inputting and storing pattern data, a means for comparing and calculating the pattern data at the end of the immediately preceding printing work and the pattern data to be printed next, and a pattern for each area at the end of the immediately preceding printing work. An AND gate that outputs when the total value of the differences between the areas of the data and the pattern data for each area to be printed next is zero or less than a certain value, and there is a certain value or more of the differences between the areas. A switch connected to the AND gate and switching to a method of controlling the metering mechanism for each area based on the result of comparison calculation of the pattern data at the end of the immediately preceding printing work and the pattern data to be printed next, Depending on the output of the calculation means Offset printing press ink preliminary metering device, characterized in that a driving means for driving to adjust the metering mechanism of the ink fountain Te. 14. The pattern data is a pattern area ratio or a set value given to a metering mechanism for supplying ink necessary for printing corresponding to the pattern area ratio.
2. An ink pre-measuring device for an offset printing machine according to 2. 15. An ink fountain of an offset printing machine, which has a metering mechanism capable of metering the ink fountain at regular intervals and is capable of adjusting the thickness of the ink film of the ink take-out roller for each area. A device for scanning a printing plate, film or proofreading sheet and measuring the image area ratio of each area or of the whole area,
Conversion means for converting the pattern area ratio to a set value given to the metering mechanism for supplying ink required for printing corresponding thereto, and means for storing the pattern area ratio or the set value given to the metering mechanism A calculation means for comparing and calculating the pattern area ratio at the end of the immediately preceding printing or the setting value given to the adjusting mechanism and the setting value given to the pattern area ratio or the adjusting mechanism to be printed next,
An ink pre-metering device for an offset printing press, comprising a driving means for adjusting a metering mechanism of an ink fountain according to an output of a computing means.