JP6174467B2 - Ink supply method and ink supply apparatus - Google Patents

Description

  The present invention relates to an ink supply method and apparatus for supplying ink supplied to an ink fountain roller to a printing plate mounted on a plate cylinder via an ink roller group by a call operation of an ink call roller.

  FIG. 55 shows a main part of an inker (ink supply device) in a printing unit for each color in a rotary printing press. In the figure, 1 is an ink fountain, 2 is ink stored in the ink fountain 1, 3 is an ink fountain roller, 4 (4-1 to 4-n) are provided in parallel in the axial direction of the ink fountain roller 3. Ink fountain keys, 5 is an ink calling roller, 6 is an ink roller group, 7 is a printing plate, 8 is a plate cylinder on which the printing plate 7 is mounted, 9 is a rubber cylinder, and 10 is an impression cylinder.

  This ink supply device supplies the ink 2 in the ink fountain 1 to the ink fountain roller 3 by adjusting the opening degree of the ink fountain keys 4-1 to 4-n, and the ink supplied to the ink fountain roller 3 is supplied to the ink call roller 5. The ink is supplied to the printing plate 7 through the ink roller group 6 by a calling operation.

  The printing plate 7 has a pattern printed thereon. The ink supplied to the printing plate 7 is received by the rubber cylinder 9, and the ink received by the rubber cylinder 9 flows between the rubber cylinder 9 and the impression cylinder 10. To be printed) 11.

  Ink rollers 6-1 to 6-4 that are in contact with the printing plate 7 are provided at the end of the ink flow path of the ink roller group 6. Further, the dampening water stored in the water boat 13 is supplied to the printing plate 7 through the swimsuit roller 12 together with the ink through the ink deposition rollers 6-1 to 6-4.

  In this ink supply apparatus, when the print job is switched, that is, when the plate 7 of the previous print job is replaced with the plate 7 'of the next print job, the ink fountain keys 4-1 to 4-n are opened. The printing plate 7 in which the ink 2 in the ink fountain 1 is exchanged via the ink roller group 6 is changed to a value corresponding to the pattern of the printing plate 7 ′ of the next printing job. Supply to '. In this case, a trial printing is performed before the main printing, the ink supply amount is adjusted, and a satisfactory color tone is obtained. As a result, a desired ink film thickness distribution (gradient of ink film thickness) is created in the ink roller group 6, the plate cylinder 8 and the rubber cylinder 9.

  However, in the conventional ink supply device, when the printing plate 7 is replaced with the printing plate 7 ′ and the next printing job is performed, the ink film thickness distribution on the printing plate 7 of the previous printing job is changed to the ink roller group 6. Remaining. In this case, the ink film thickness distribution for the printing plate 7 of the previous printing job must be gradually changed to the ink film thickness distribution for the printing plate 7 'of the next printing job, and until a satisfactory color tone is obtained. It requires excessive adjustment of ink supply and trial printing, such as `` increase in preparation time before printing '', `` increase in labor load '', `` waste of printing materials '', `` decrease in production efficiency '', `` cost increase '', etc. Problems arise.

  For this reason, the “ink thickness control method” proposed in Patent Document 1 and Patent Document 2 is proposed for the purpose of reducing the number of ink supply adjustments and trial printings until a satisfactory color tone is obtained. Has been.

[Patent Document 1 (reducing printing + pre-inking 2)]
In the ink film thickness control method disclosed in Patent Document 1, when the print job is switched, the call operation of the ink call roller 5 is turned off and the printing plate 7 of the previous print job is still mounted. The machine is operated to print a predetermined number of sheets (blank paper printing), thereby reducing the ink in the ink supply device (reducing printing), and it is necessary during printing that becomes thinner toward the ink roller group 6 from upstream to downstream. The minimum ink film thickness distribution Ma (see FIG. 56 (a)), that is, the ink film thickness distribution Ma corresponding to the portion having no pattern on the printing plate 7 is left (ink removing).

  Next, the opening degree of the ink fountain keys 4-1 to 4-n and the rotation amount of the ink fountain roller 3 are set to values according to the pattern of the printing plate 7 'of the next print job, and then the ink application roller 6-1. -6-6 is removed, the machine is operated, and the ink call roller 5 is called a predetermined number of times, so that the minimum ink film required during printing remaining in the ink roller group 6 is obtained. An ink film thickness distribution Mb (see FIG. 56B) corresponding to the pattern of the printing plate 7 ′ of the next print job is superimposed on the thickness distribution Ma (pre-inking 2).

[Patent Document 2 (Turning back + Preking 1)]
In the ink film thickness control method disclosed in Patent Document 2, when the print job is switched, the opening amount of the ink fountain keys 4-1 to 4-n is set to zero, and the ink calling roller 5 is called a predetermined number of times in this state. The ink on the ink roller group 6 is all returned to the ink fountain 1 (turned back). As a result, each roller in the ink roller group 6 does not hold ink.

  Next, the opening degree of the ink fountain keys 4-1 to 4-n is set to a predetermined opening degree (for example, 50%), and the rotation amount of the ink fountain roller 3 is set to a predetermined amount (for example, 50%). The calling roller 5 is called a predetermined number of times to form a minimum ink film thickness distribution Ma (see FIG. 56A) required during printing in the ink roller group 6 (first step of pre-inking 1). .

  Then, the opening degree of the ink fountain keys 4-1 to 4-n and the rotation amount of the ink fountain roller 3 are set to values according to the pattern of the printing plate 7 'of the next print job, and then the ink application rollers 6-1 to 6-1. 6-4 is removed, the machine is operated, the ink calling roller 5 is called a predetermined number of times, and the minimum ink film thickness required during printing formed in the ink roller group 6 An ink film thickness distribution Mb (see FIG. 56B) corresponding to the pattern of the plate 7 ′ of the next print job is superimposed on the distribution Ma (second step of pre-inking 1).

Japanese Patent Laid-Open No. 10-16193 Japanese Patent Laid-Open No. 11-188844 JP 2000-37853 A JP-A-3-97564 JP 58-201008 A JP 58-201010 A

  However, in the ink film thickness control method (print reduction + preinking 2) disclosed in Patent Document 1, blank paper printing is performed when the ink film thickness distribution Ma is left on the ink roller group 6, so that paper is wasted. There was a problem of becoming.

  In addition, in the ink film thickness control method disclosed in Patent Document 2 (Flip + Preinking 1), all ink on the ink roller group 6 is returned to the ink fountain 1 and the ink film thickness distribution (Ma + Mb) corrected from zero is used. ), It takes time. Further, in this method, since the emulsified ink (ink kneaded with the fountain solution) is returned to the ink fountain 1, there is a problem that printing trouble occurs and printing materials are wasted.

  In Patent Document 3, when the pattern area ratios of the previous print job and the next print job in the range corresponding to all ink fountain keys are substantially the same, blank paper printing or flaw printing as described in Patent Document 1 or Patent Document 2 is performed. The printing of the next print job is started directly without performing return. However, usually the prints of the prints of the previous print job and the next print job are different, and the pattern area ratio of the previous print job and the next print job in the range corresponding to all ink fountain keys is not almost the same. Not practically functioning.

  The present invention has been made to solve such problems. The object of the present invention is to replace the printing plate and use the image of the printing plate (next printing job) to be used for printing the next printing job. When forming the ink film thickness distribution according to the pattern of the printing plate), the ink film thickness distribution formed on the ink roller group can be obtained in a short time without performing blank paper printing or turning over. An object of the present invention is to provide an ink supply method and an ink supply apparatus capable of correcting.

  In order to achieve such an object, the present invention is based on an index value indicating the amount of ink supplied in accordance with the pattern of the printing plate of the next printing job in the range corresponding to each ink fountain key, before the range corresponding to each ink fountain key. An index value difference calculation step for obtaining a value obtained by subtracting an index value indicating an ink supply amount corresponding to a printing plate pattern of a print job as an index value difference of each ink fountain key, and an index of the ink fountain key obtained by the index value difference calculation step A count step for counting the number of ink fountain keys whose value difference is equal to or greater than a predetermined value in the positive direction, and when the number of ink fountain keys counted in the count step is greater than or equal to a predetermined number, the opening amount of each ink fountain key is an index value of each ink fountain key. Opening setting step without removing to set the opening amount according to the difference, and opening amount without removing In the state where the opening amount of each ink fountain key is set to the opening amount corresponding to the index value difference of each ink fountain key by the predetermined step, the ink calling roller is called a predetermined number of times, and the previous print job formed in the ink roller group And an ink film thickness distribution superimposing step for directly superimposing the ink film thickness distribution according to the index value difference of each ink fountain key on the ink film thickness distribution according to the pattern of the printing plate.

  For example, after the ink film thickness distribution corresponding to the index value difference of each ink fountain key is directly superimposed on the ink film thickness distribution corresponding to the pattern of the printing plate of the previous print job formed on the ink roller group, each ink fountain key The opening amount is set to a value corresponding to the pattern of the printing plate of the next print job (claim 2).

  In the present invention, for example, when the index value indicating the amount of ink supplied in accordance with the pattern of the printing plate in the range corresponding to the ink fountain key is set as the pattern area ratio of the printing plate in the range corresponding to the ink fountain key, The pattern area ratio difference obtained by subtracting the pattern area ratio of the printing plate in the range corresponding to each ink fountain key of the previous print job from the pattern area ratio of the printing plate in the range corresponding to the ink fountain key is obtained as the index value difference of each ink fountain key. If the number of ink fountain keys whose ink fountain key pattern area difference obtained as the index value difference is equal to or larger than a predetermined value in the positive direction is equal to or larger than a predetermined number, that is, the printing of a previous print job is performed with a predetermined number or more of ink fountain keys. If the pattern area ratio of the printing plate of the next print job is greater than the predetermined value than the pattern area ratio of the plate, the opening amount of each ink fountain key will be It is set to the amount of opening in accordance with the image area rate difference over. Then, the call operation of the ink calling roller is performed a predetermined number of times while the opening amount of each ink fountain key is set to the opening amount corresponding to the difference in the pattern area ratio of each ink fountain key, and the previous print job formed in the ink roller group The ink film thickness distribution corresponding to the pattern area ratio difference of each ink fountain key is directly superimposed on the ink film thickness distribution corresponding to the pattern of the printing plate. As a result, it is possible to directly start printing of the next print job without performing blank paper printing or turning over. In the present invention, the index value indicating the ink supply amount corresponding to the printing plate pattern in the range corresponding to the ink fountain key may be the opening amount of the ink fountain key corresponding to the printing plate image in the range corresponding to the ink fountain key ( Claim 9).

  Further, in the present invention, when the number of ink fountain keys counted in the counting step is not equal to or greater than a predetermined number, the ink roller group is divided into a plurality of roller subgroups, and a part of the divided plurality of roller subgroups. The ink in the small roller group is scraped off and removed (removed) by an ink scraping member. In this case, the ink roller group is divided into a plurality of roller small groups, and the ink in some of the divided roller small groups is scraped off by a blade or a scraper. In the present invention, the ink roller group is divided into a plurality of small roller groups, but the number may be any number as long as the number is two or more. Further, in the present invention, the ink in a part of the plurality of divided roller subgroups is removed, but the number may be plural as long as it is a part of the subgroups of rollers.

  For example, in the present invention, when it is configured to be divided into two roller subgroups, it is divided into an upstream roller subgroup and a downstream roller subgroup. For example, the ink in the upstream roller small group is removed as a part of the divided roller small groups. In this case, the ink in the roller group on the upstream side cannot be turned over because the printing machine is stopped. Further, since the upstream roller subgroup is separated from the downstream roller subgroup, it cannot be removed by blank printing. Therefore, in the present invention, ink in the small roller group on the upstream side is removed by scraping with a blade or a scraper instead of turning over or printing on blank paper.

  The present invention further includes a roller group connecting step of connecting a plurality of divided roller small groups and returning them to one ink roller group after ink in some of the roller small groups is removed by the ink removing step. The ink roller group is returned to one ink roller group by the opening amount setting step at the start of printing in which the opening amount of each ink fountain key is set to a value corresponding to the pattern of the plate of the next print job and the roller group connecting step. In the state where the opening amount of each ink fountain key is set to a value corresponding to the pattern of the printing plate of the next print job in the opening amount setting step at the start of printing, the ink calling roller is called a predetermined number of times, An ink film thickness distribution forming step for forming an ink film thickness distribution corresponding to the pattern of the printing plate of the next print job on the ink roller group returned to one; That (claim 4).

  For example, in the present invention, when the structure can be divided into two roller small groups, the state is returned to one ink roller group in which the upstream roller small group and the downstream roller small group are connected, In addition, with each ink fountain key opening amount set to a value corresponding to the pattern of the printing plate of the next print job, the ink call roller is called up a predetermined number of times, thereby returning the ink roller group to one. An ink film thickness distribution corresponding to the pattern of the printing plate of the next print job is formed.

  The present invention further includes an ink roller group in which an ink film thickness distribution corresponding to an index value difference of each ink fountain key is directly superimposed on an ink film thickness distribution corresponding to a printing plate pattern of a previous print job. Roller group dividing step at the start of printing, in which the ink roller group in which the ink film thickness distribution according to the pattern of the printing plate of the next print job is formed is divided into a plurality of small roller groups, and printing start A plate on which at least the most downstream roller subgroup of a plurality of roller subgroups and a printing plate to be used in the next print job are mounted after being divided by the current roller group division step or before being divided The plate cylinder and the small roller group which are divided by the landing step for putting the cylinder into the wearing state and the roller group dividing step at the start of printing and put into the wearing state by the wearing step are rotated by a predetermined number of rotations. Characterized in that it comprises a ink supply step of supplying ink in the roller subgroup the printing plate mounted on the plate cylinder (claim 5, 6).

  According to this invention, when the number of ink fountain keys counted in the counting step is a predetermined number or more, the ink film thickness distribution according to the pattern of the printing plate of the previous print job corresponds to the index value difference of each ink fountain key. The ink roller group in which the ink film thickness distribution is directly superimposed is divided into a plurality of small roller groups. Alternatively, if the number of ink fountain keys counted in the counting step is not equal to or greater than the predetermined number, an ink film thickness distribution corresponding to the printing plate pattern of the next print job is formed, and the ink roller group is divided into a plurality of roller small groups. Is done. In addition, after being divided or before being divided, at least the most downstream roller group among the plurality of roller groups and the plate cylinder on which the printing plate used in the next print job is mounted It is said. That is, after being divided into a plurality of roller subgroups, at least the most downstream roller subgroup among the plurality of roller subgroups and the plate cylinder are put on. Alternatively, at least the most downstream roller subgroup of the plurality of roller subgroups and the plate cylinder are put into a wearing state, and then divided into a plurality of roller subgroups. Then, the divided plate cylinder and the small group of rollers are rotated by a predetermined number of revolutions, and the ink in the small group of rollers is supplied to the printing plate mounted on the plate cylinder.

  For example, in the present invention, when it is configured to be divided into two roller subgroups, it is divided into an upstream roller subgroup and a downstream roller subgroup. In addition, after the division or before the division, the small roller group and the plate cylinder on the downstream side are brought into a wearing state. Then, the divided plate cylinder and the downstream roller subgroup are rotated by a predetermined number of rotations, and the ink in the downstream roller subgroup is supplied to the printing plate mounted on the plate cylinder. The In this case, only the ink having a relatively thin ink film thickness distribution in the small roller group on the downstream side is supplied to the printing plate, and the ink film thickness distribution in the plate cylinder is prevented from becoming too thick.

  In addition, in the ink film thickness control method disclosed in Patent Document 1 (reduction of printing + preinking 2) and the ink film thickness control method disclosed in Patent Document 2 (turnback + preinking 1), the ink roller group After the ink film thickness distribution corresponding to the printing plate pattern of the next print job is superimposed on the minimum ink film thickness distribution required during printing, the ink form roller is attached and replaced. Since the ink in the ink roller group is supplied to the printing plate of the next printing job and the cleaned rubber cylinder to start printing, the next job starts from a state where there is no ink in the printing cylinder and the rubber cylinder. Printing is started, and normal prints cannot be printed until the final ink film thickness distribution is formed during printing on the plate cylinder, rubber cylinder, and ink roller group. Of waste paper and printing resources Is wasted, there is a problem in that.

  In addition, after superimposing the ink film thickness distribution according to the printing plate pattern of the next print job on the minimum ink film thickness distribution required during printing formed on the ink roller group, the next job Before starting printing, it is conceivable that the printing press is rotated a predetermined number of times with the ink application roller, the swimsuit roller, the plate cylinder, and the rubber cylinder being in contact with each other to supply ink to the plate cylinder and the rubber cylinder. (For example, refer to Patent Document 4). However, in this case, since all the ink in the ink supply device is leveled in the ink roller group, the plate cylinder and the rubber cylinder, a large amount of excessive ink is supplied to the plate cylinder and the rubber cylinder. The ink film thickness distribution in the rubber cylinder becomes too thick. For this reason, there arises a problem that a large amount of damaged paper is generated until the excessive ink supplied in a large amount is consumed. On the other hand, in the present invention, since only the ink having a relatively thin ink film thickness distribution in the downstream small group of rollers is supplied to the printing plate, the above-described problem does not occur.

  In the present invention, the ink supplied to the printing plate mounted on the plate cylinder can be directly transferred to the printing medium without using the rubber cylinder. Are used in at least the most downstream roller subgroup of the plurality of roller subgroups and the next print job after being divided by the roller group dividing step at the start of printing or before being divided in the landing step. The plate cylinder on which the printing plate is mounted is put on the wearing state, and the plate cylinder and the rubber cylinder are put on the wearing state. Further, in the ink supply step, the plate cylinder, the roller small group, and the rubber cylinder, which are divided by the roller group dividing step at the start of printing and are in the wearing state by the landing step, are rotated by a predetermined number of revolutions, so that The ink is supplied to the printing plate and the rubber cylinder mounted on the plate cylinder. As a result, in the present invention, for example, when dividing into an upstream roller subgroup and a downstream roller subgroup, only ink with a relatively thin ink film thickness distribution in the downstream roller subgroup is obtained. It is supplied to the printing plate and the rubber cylinder, and the ink film thickness distribution in the plate cylinder and the rubber cylinder is prevented from becoming too thick.

  The present invention further uses the printing plate mounted on the plate cylinder after connecting the plurality of divided roller small groups and returning them to one ink roller group after supplying the ink in the ink supplying step. A printing start step for starting printing of the next print job is provided (claim 8). Accordingly, in the present invention, for example, when the upstream roller subgroup is divided into the downstream roller subgroup, the ink in the downstream roller subgroup is supplied to supply the plate cylinder (or the plate cylinder). After the ink film thickness distribution is formed on the rubber cylinder), the next print job is printed in a state where the upstream roller subgroup and the downstream roller subgroup are connected and returned to one roller group. Is started. In this case, the ink film thickness distribution at the time of printing the next print job (final ink film thickness distribution at the time of final printing) is created during printing. At this time, since the ink film thickness distribution in the small roller group and the plate cylinder (or the plate cylinder and the rubber cylinder) on the downstream side is thin, the ink flows quickly from the upstream side to the downstream side, and the ink roller group and the plate cylinder The ink film thickness distribution during the main printing is rapidly formed on (or the plate cylinder and the rubber cylinder).

  The present invention can also be configured as an apparatus to which the ink supply method described above is applied. The invention according to claims 10 to 18 of the present application is an apparatus according to the invention according to the ink supply method of claims 1 to 9.

According to the present invention, the printing plate pattern of the previous printing job in the range corresponding to each ink fountain key from the index value indicating the amount of ink supplied according to the printing plate pattern of the next printing job in the range corresponding to each ink fountain key. The value obtained by subtracting the index value indicating the ink supply amount according to the ink fountain key is calculated as the index value difference of each ink fountain key, and the number of ink fountain keys whose index value difference of the determined ink fountain key is equal to or greater than a predetermined value in the positive direction is counted. When the number of counted ink fountain keys is equal to or greater than the predetermined number, the opening amount of each ink fountain key is set to the opening amount corresponding to the index value difference of each ink fountain key, and the opening amount of each ink fountain key corresponds to the index value difference of each ink fountain key The ink call roller is called a predetermined number of times with the open amount set, and the previous print job formed on the ink roller group The ink film thickness distribution according to the index value difference of each ink fountain key is directly superimposed on the ink film thickness distribution according to the pattern of the plate. It is possible to correct the ink film thickness distribution formed on the ink roller group in a short time without performing.
In addition, since it is not necessary to remove (remove) the ink in some of the roller subgroups, the ink is not wasted and the ink consumption can be suppressed.

1 is a block diagram showing an embodiment (Embodiment 1) of a print job switching control device used for carrying out an ink supply method according to the present invention. FIG. It is a figure which shows the principal part (state which connected the ink roller group (state before dividing | segmenting an ink roller group)) of the ink supply apparatus in the printing unit controlled by this print job switching control apparatus. It is a figure which shows the principal part (state which divided | segmented the ink roller group) of the ink supply apparatus in the printing unit controlled by this print job switching control apparatus. FIG. 4 is a diagram illustrating a main part of an ink supply device in a printing unit controlled by the print job switching control device (a state in which an ink roller group is divided and ink in an upstream roller small group is scraped with a blade). . It is a figure which shows the content of the memory in this print job switching control apparatus. It is a figure which shows the content of the memory following FIG. The process of forming the ink film thickness distribution of the next print job on the ink roller group, the plate cylinder, and the rubber cylinder when the print job is switched using this print job switching control device (with removal (pattern 1)) FIG. It is a figure which shows the formation process of the ink film thickness distribution corresponding to FIG. 7 at the time of forming the ink film thickness distribution of the next printing job, without dividing | segmenting an ink roller group after the pre-inking in an ink apparatus. It is a figure which shows the formation process of the ink film thickness distribution corresponding to FIG. 7 at the time of making a downstream roller small group, a plate_cylinder | printing_drum, and a rubber | gum cylinder into a wearing state before dividing | segmenting an ink roller group. The process of forming the ink film thickness distribution of the next print job on the ink roller group, the plate cylinder and the rubber cylinder when the print job is switched using this print job switching control device (without removing (pattern 2)) FIG. It is a figure which shows the formation process of the ink film thickness distribution corresponding to FIG. 10 at the time of making a roller small group, a plate cylinder, and a rubber | gum cylinder into a wearing state before dividing | segmenting an ink roller group. 4 is a flowchart for explaining detailed operations of the print job switching control apparatus. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. FIG. 10 is a diagram illustrating the contents of a memory in the print job switching control apparatus according to the second embodiment. It is a figure which shows the content of the memory following FIG. 10 is a flowchart for explaining detailed operations of the print job switching control apparatus according to the second embodiment. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a flowchart following FIG. It is a block diagram which shows the outline of an internal structure of an ink fountain roller control apparatus. It is a flowchart which shows the processing operation of an ink fountain roller control apparatus. It is a block diagram which shows the outline of an internal structure of an ink fountain key control apparatus. It is a flowchart which shows the processing operation of an ink fountain key control apparatus. It is a flowchart following FIG. FIG. 5 is a diagram illustrating an example in which ink supplied to a printing plate mounted on a plate cylinder is directly transferred to a printing paper without going through a rubber cylinder. It is a figure which shows the principal part of the ink supply apparatus in the printing unit of each color in a printing machine. It is a figure which shows ink film thickness distribution Ma and Mb formed on the ink roller group of an ink supply apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Embodiment 1: Example in which index value indicating ink supply amount according to pattern of printing plate in range corresponding to ink fountain key is used as pattern area ratio of printing plate]
FIG. 1 is a block diagram showing an embodiment (Embodiment 1) of a print job switching control apparatus used for carrying out an ink supply method according to the present invention.

  The print job switching control device 100 includes a CPU (Central Processing Unit) 101, a RAM (Random Access Memory) 102, a ROM (Read Only Memory) 103, an input device 104, a display 105, an output device (such as a printer) 106, and printing. Stop switch 107, print job switching start switch 108, driving motor 109 of the printing press, driving motor driver 110, rotary encoder 111 for the driving motor, D / A converter 112, origin position detector 113 of the printing press, rotation of the printing press A counter 114 for counting the number of times and an ink calling device 115 are provided.

  Also, the roller group dividing / connecting air cylinder 116, the roller group dividing / connecting air cylinder valve 117, the swimsuit roller attaching / detaching air cylinder 118, the swimsuit roller attaching / detaching air cylinder valve 119, and the ink applying roller attaching / detaching air cylinder 120. , Ink roller attaching / detaching air cylinder valve 121, ink scraping blade attaching / detaching air cylinder 122, ink scraping blade attaching / detaching air cylinder valve 123, paper feeder 124, printing unit 125, memory 126, input / output interface ( I / O, I / F) 127-1 to 127-10.

  FIG. 2 is a diagram showing a main part of the ink supply device in each printing unit controlled by the print job switching control device 100. In the figure, the same reference numerals as those in FIG. 55 denote the same or equivalent components as those described with reference to FIG. 55, and the description thereof will be omitted. In this ink supply apparatus, the ink roller group 6 can be divided into an upstream roller subgroup 6A and a downstream roller subgroup 6B with a line L1 shown by a dotted line in the figure as a boundary.

  Specifically, a roller 6C positioned between the upstream roller subgroup 6A and the downstream roller subgroup 6B is pivotally supported on one end of a swing arm 14 that swings around a fulcrum P1 as a rotation center. A roller group dividing / connecting air cylinder 116 is connected to the other end of the swing arm 14. Here, the swing arm 14 is indicated by a one-dot chain line in order to be distinguished from others.

  In this structure, when the roller group dividing / connecting air cylinder 116 is extended (see FIG. 3), the swing arm 14 swings in the direction of arrow A with the pivot point P1 as the center of rotation. The peripheral surface of the roller 6C is separated from the peripheral surface of the roller 6A1 positioned at the lowermost end of the ink flow path of the upstream roller subgroup 6A, and the peripheral surface of the roller 6C is the ink flow path of the downstream roller subgroup 6B. It leaves | separates from the surrounding surface of roller 6B1 located in the uppermost end. Thus, the ink roller group 6 is divided into an upstream roller small group 6A and a downstream roller small group 6B.

  When the roller group dividing / coupling air cylinder 116 is retracted from this state, the swing arm 14 swings in the direction of arrow B with the pivot point P1 as the center of rotation, and the peripheral surface of the roller 6C is moved along with this swing. The peripheral surface of the roller 6A1 positioned at the lowermost end of the ink flow path of the upstream roller small group 6A is in contact with the peripheral surface of the roller 6A1, and the peripheral surface of the roller 6C is positioned at the uppermost end of the ink flow path of the downstream roller small group 6B. It contacts the peripheral surface of the roller 6B1 (see FIG. 2). As a result, the upstream roller small group 6 </ b> A and the downstream roller small group 6 </ b> B are connected and returned to the single ink roller group 6.

  Further, for the ink roller group 6, an ink scraping blade 15 that contacts the peripheral surface of the roller 6A2 of the upstream roller small group 6A and scrapes the ink in the upstream roller small group 6A, and this ink scraping An ink receiver 16 for collecting the ink scraped off by the take-off blade 15 is provided. An air cylinder 122 for attaching / detaching an ink scraping blade is provided for the ink scraping blade 15. When ink is scraped off, the ink scraper blade attaching / detaching air cylinder 122 is retracted to bring the ink scraper blade 15 into contact with the peripheral surface of the roller 6A2 (see FIG. 4). When the ink scraping blade attaching / detaching air cylinder 122 is extended, the ink scraping blade 15 is separated from the peripheral surface of the roller 6A2.

  In the print job switching control apparatus 100, the CPU 101 obtains various input information given through the interfaces 127-1 to 127-10, and operates according to the program stored in the ROM 103 while accessing the RAM 102 and the memory 126. .

  The driving motor rotary encoder 111 generates a rotation pulse at every predetermined rotation angle of the driving motor 109 of the printing press and outputs the rotation pulse to the driving motor driver 110. The origin position detector 113 of the printing press detects the origin position for each rotation of the printing press, generates an origin position detection signal, and outputs it to the counter 114 for counting the number of rotations of the printing press.

  The ink calling device 115 is provided for the ink calling roller 5. When the ink calling device 115 is turned on, the calling operation of the ink calling roller 5 is started, and when the ink calling device 115 is turned off, the calling operation of the ink calling roller 5 is stopped.

  The swimsuit roller attaching / detaching air cylinder 118 is provided for the swimsuit roller 12. When the swimsuit roller attaching / detaching air cylinder 118 is extended, the swimsuit roller 12 is in the attached state (in contact with the printing plate 7 (7 ′)), and when the swimsuit roller attaching / detaching air cylinder 118 is retracted, the swimsuit roller 12 is moved. Is in a detached state (a state separated from the printing plate 7 (7 ′)).

  The air cylinder 120 for attaching / detaching the ink applying roller is provided for the ink applying rollers 6-1 to 6-4. When the ink application roller attaching / detaching air cylinder 120 is extended, the ink application rollers 6-1 to 6-4 are in the attached state (in contact with the printing plate 7 (7 ′)), and the ink applying roller attaching / detaching air cylinder 120. Is retracted, the ink application rollers 6-1 to 6-4 are in a detached state (a state separated from the printing plate 7 (7 ′)).

  5 and 6 show the contents of the memory 126 in a divided manner. The memory 126 is provided with memories M1 to M20. A count value N is stored in the memory M1. The memory M2 stores the pattern area ratios S1b to Snb in a range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate of the next print job. The memory M3 stores the pattern area ratios S1a to Sna in a range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate of the previous print job. The memory M4 stores the total number n of ink fountain keys of each printing unit. A count value M is stored in the memory M5. The memory M6 corresponds to the ink fountain keys 4-1 to 4-n of the printing plate of the previous printing job from the pattern area ratios S1b to Snb in the range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate of the next printing job. The value obtained by subtracting the pattern area ratios S1a to Sna in the range to be stored is stored as the pattern area ratio differences ΔS1 (ΔS1 = ΔS1b−ΔS1a) to ΔSn (ΔSn = ΔSnb−ΔSna) of the ink fountain keys 4-1 to 4-n. The memory M7 stores a pattern area ratio difference determination reference value ΔSth (positive value). The memory M8 stores a determination reference value nth for the number of ink fountain keys. The memory M9 stores a pattern area ratio difference-ink fountain key opening amount conversion table during pre-inking without removing. The memory M10 stores the opening amounts of the ink fountain keys 4-1 to 4-n at the time of pre-inking without removing.

  The memory M11 stores the rotation speed Vpr of the printing press during pre-inking. The memory M12 stores the rotation amount of the ink fountain roller. The memory M13 stores the count value of the counter for counting the number of rotations of the printing press. The memory M14 stores the number of rotations N1 of the printing press during pre-inking without removing. In the memory M15, opening amounts θ1b to θnb of the ink fountain keys 4-1 to 4-n corresponding to the pattern of the printing plate of the next print job are stored. The memory M16 stores the number of rotations N2 of the printing press at the time of ink scraping. The memory M17 stores a pattern area ratio-ink fountain key opening amount conversion table. The memory M18 stores the number N3 of rotations of the printing press during pre-inking with removal. The memory M19 stores the number of rotations N4 of the printing press during plate cylinder / rubber cylinder pre-inking. The memory M20 stores the printing speed Vp.

  In FIG. 1, reference numeral 200 denotes an ink fountain roller control device for driving the ink fountain roller 3 in the ink supply device, and 300-1 to 300-n control the opening amounts of the ink fountain keys 4-1 to 4-n in the ink supply device. This is an ink fountain key control device. The ink fountain roller control device 200 and the ink fountain key control devices 300-1 to 300-n are provided for each color ink supply device, but in this embodiment, only one ink supply device is provided to simplify the description. . That is, the operation will be described on behalf of one ink supply device.

[Schematic operation of the print job switching control device]
Before describing the detailed operation of the print job switching control apparatus 100, the general operation will be described in order to facilitate understanding.

[Pattern 1 (with removal): When the number of ink fountain keys whose pattern area ratio difference ΔS is greater than or equal to the pattern area ratio difference criterion value ΔSth is not greater than or equal to the criterion number nth of ink fountain key numbers]
(1) Stop feeding and stop printing using the printing plate 7 (end the previous print job). When printing is stopped, the cylinder is removed, the rubber cylinder 9 is separated from the plate cylinder 8 and the impression cylinder 10, the ink form rollers 6-1 to 6-4 are removed, the swimsuit roller 12 is removed, and the plate is removed. It leaves | separates from the trunk | drum 8 (refer FIG. 3). In this case, the ink film thickness distribution Mc corresponding to the pattern of the printing plate 7 is left in the ink roller group 6 as shown in FIG. That is, the ink film thickness distribution Mc of the previous print job is left.

(2) While the printing press is stopped, the printing plate 7 mounted on the plate cylinder 8 is replaced with the printing plate 7 'for the next print job and the rubber cylinder 9 is washed (FIG. 7B).

(3) The ink roller group 6 is divided into an upstream roller small group 6A and a downstream roller small group 6B (division with removal). Thereby, the ink film thickness distribution Mc of the ink roller group 6 is, as shown in FIG. 7C, the ink film thickness distribution McA of the upstream roller small group 6A and the ink film thickness of the downstream roller small group 6B. The distribution is divided into McB.

(4) The rotational speed of the printing press is increased to the pre-inking rotational speed Vpr, and the ink scraping blade 15 is attached to the roller 6A2 in the upstream roller subgroup 6A. (Number of rotations N2 at the time of ink scraping) and the ink in the upstream roller small group 6A is scraped off (see FIG. 4). That is, the ink in the upstream roller subgroup 6A is removed. As a result, as shown in FIG. 7D, the ink film thickness distribution McA of the upstream roller small group 6A becomes almost zero. At this time, the ink film thickness distribution of the downstream roller small group 6B is leveled by the number of rotations N2 at the time of ink scraping, and becomes a flat ink film thickness distribution McB '.

(5) The opening degree of the ink fountain keys 4-1 to 4-n is set to a value corresponding to the pattern of the printing plate 7 'of the next print job. That is, the value is set according to the pattern of the next print job. Further, the upstream roller small group 6A and the downstream roller small group 6B are connected and returned to one ink roller group 6 (FIG. 7E). Then, in a state where the rotation speed of the printing press is the rotation speed Vpr at the time of preinking, the ink call roller 5 is called for the number of rotations N3 at the time of preinking with removal, and the ink roller group 6 is caused to call. An ink film thickness distribution Md corresponding to the pattern of the printing plate 7 ′ of the next print job is created (FIG. 7F).

(6) The calling operation of the ink calling roller 5 is stopped, and the ink roller group 6 is subdivided into an upstream roller small group 6A and a downstream roller small group 6B (division at the start of printing). As a result, the ink film thickness distribution Md of the ink roller group 6 is equal to the ink film thickness distribution MdA of the upstream roller subgroup 6A and the ink film thickness of the downstream roller subgroup 6B, as shown in FIG. The distribution is divided into MdB.

(7) The ink application rollers 6-1 to 6-4 and the swimsuit roller 12 are applied, and only the plate cylinder 8 and the rubber cylinder 9 are applied. That is, the ink application rollers 6-1 to 6-4 and the swim roller 12 are brought into contact with the plate surface of the printing plate 7 ', and the rubber cylinder 9 is attached only to the plate cylinder 8 (calling operation is stopped). ) As a result, the small roller group 6B, the swimsuit roller 12, the plate cylinder 8, and the rubber cylinder 9 on the downstream side are brought into a wearing state (FIG. 7 (h)).

(8) In this state, the printing press is rotated by the number of rotations N4 at the time of plate cylinder / rubber cylinder pre-inking, and the printing plate 7 ′ in which the ink in the roller group 6B on the downstream side is mounted on the plate cylinder 8 and The rubber cylinder 9 is supplied (FIG. 7 (i)). In this case, only ink having a relatively thin ink film thickness distribution MdB in the roller group 6B on the downstream side is supplied to the printing plate 7 ′ and the rubber cylinder 9, and the ink film on the printing plate 7 ′ and the rubber cylinder 9 is supplied. The thickness distribution is prevented from becoming too thick.

  That is, as shown in FIG. 8, after the process of FIG. 8 (f) corresponding to FIG. 7 (f), the ink roller group 6 is not divided and the ink deposition rollers 6-1 to 6-4 and the swimsuit are separated. It is conceivable that the roller 12, the plate cylinder 8 and the rubber cylinder 9 are put on (FIG. 8G) and the printing machine is rotated a predetermined number of times to supply ink to the plate cylinder 8 and the rubber cylinder 9. In this case, since all the ink in the ink supply device is leveled in the ink roller group 6, the plate cylinder 8 and the rubber cylinder 9, excessive ink is supplied to the plate cylinder 8 and the rubber cylinder 9. The ink film thickness distribution in the plate cylinder 8 and the rubber cylinder 9 becomes too thick (FIG. 8 (h)).

  On the other hand, after the step of FIG. 7 (f), the ink roller group 6 is divided into an upstream roller small group 6A and a downstream roller small group 6B (FIG. 7 (g)). Only the ink having a relatively thin ink film thickness distribution MdB in the small roller group 6B on the side is supplied to the printing plate 7 ′ and the rubber cylinder 9 (FIGS. 7 (h) and (i)), and the printing plate 7 ′. In addition, the ink film thickness distribution in the rubber cylinder 9 is prevented from becoming too thick.

(9) Thereafter, the upstream roller small group 6A and the downstream roller small group 6B are reconnected and returned to one ink roller group 6 (FIG. 7 (j)), and the ink calling roller 5 is called. The operation is performed so that the rubber cylinder 9 is also attached to the impression cylinder 10, that is, the cylinder cylinder 8, the rubber cylinder 9 and the impression cylinder 10 are brought into contact with each other (see FIG. 2). The printing of the next print job using the printing plate 7 ′ mounted on is started.

  In this case, the ink film thickness distribution at the time of printing the next print job (final ink film thickness distribution at the time of final printing) is created during printing. At this time, since the ink film thickness distribution MdB ′ in the roller small group 6B and the plate cylinder 8 and the rubber cylinder 9 on the downstream side is thin, the ink quickly flows from the upstream side to the downstream side, and the ink roller group 6 and the plate The ink film thickness distribution Me (FIG. 7 (k)) during the final printing is quickly formed on the cylinder 8 and the rubber cylinder 9.

  In the method shown in FIG. 8, since the ink film thickness distribution in the plate cylinder 8 and the rubber cylinder 9 becomes too thick (FIG. 8 (h)), the ink film thickness distribution Me during the main printing (FIG. 8 (i)). It takes a long time to form a large amount of waste paper. On the other hand, in this embodiment, since the ink film thickness distribution formed on the plate cylinder 8 and the rubber cylinder 9 is prevented from becoming too thick, the ink flows quickly from the upstream side to the downstream side, The ink film thickness distribution during the main printing is quickly formed on the ink roller group 6, the plate cylinder 8 and the rubber cylinder 9, and a short time after the printing of the next print job after replacing the printing plate 7 'is started. A normal printed matter can be obtained.

  In the schematic operation described with reference to FIG. 7, the ink roller group 6 is divided into an upstream roller small group 6A and a downstream roller small group 6B (FIG. 7G), and then the downstream side. The roller small group 6B is put on the plate cylinder 8 (FIG. 7 (h)), but as shown in FIG. 9 as a pattern 1 ', the ink roller group 6 is placed on the upstream roller small group. Before being divided into 6A and the downstream roller subgroup 6B, the downstream roller subgroup 6B is put on the plate cylinder 8 (FIG. 9G), and then the ink roller group 6 is moved upstream. You may make it divide | segment into 6 A of roller small groups, and the roller small group 6B of a downstream (FIG.9 (h)).

[Pattern 2 (pattern without removal): When the number of ink fountain keys whose pattern area ratio difference ΔS is greater than or equal to the pattern area ratio difference criterion value ΔSth is greater than or equal to the number of ink fountain key criterion values nth]
(1) Stop feeding and stop printing using the printing plate 7 (end the previous print job). When printing is stopped, the cylinder is removed, the rubber cylinder 9 is separated from the plate cylinder 8 and the impression cylinder 10, the ink form rollers 6-1 to 6-4 are removed, the swimsuit roller 12 is removed, and the plate is removed. It leaves | separates from the trunk | drum 8 (refer FIG. 3). In this case, the ink film thickness distribution Mc corresponding to the pattern of the printing plate 7 is left in the ink roller group 6 as shown in FIG. That is, the ink film thickness distribution Mc of the previous print job is left.

(2) While the printing press is stopped, the printing plate 7 mounted on the plate cylinder 8 is replaced with a printing plate 7 'for the next print job and the rubber cylinder 9 is washed (FIG. 10B).

(3) The opening amount of the ink fountain keys 4-1 to 4-n is set to an opening amount corresponding to the pattern area ratio difference ΔS1 to ΔSn of the ink fountain keys 4-1 to 4-n, and the printing machine is rotated at the rotation speed Vpr. In this state, the calling operation of the ink calling roller 5 is performed for the number N1 of rotations during pre-inking without removal, and the pattern of the printing plate 7 of the previous printing job formed in the ink roller group 6 The ink film thickness distribution corresponding to the pattern area ratio differences ΔS1 to ΔSn of the ink fountain keys 4-1 to 4-n is directly superimposed on the ink film thickness distribution corresponding to the ink fountain key 4-1 to 4-n.

  Thereby, the ink roller group 6 has an ink film thickness distribution Md in which the ink film thickness distribution corresponding to the pattern area ratio differences ΔS1 to ΔSn is superimposed on the ink film thickness distribution corresponding to the pattern of the printing plate 7 of the previous print job. '(Fig. 10 (c)) is formed. That is, in the range corresponding to the ink fountain keys 4-1 to 4-n of the ink roller group 6, the ink film thickness distribution corresponding to the pattern of the printing plate 7 of the previous print job is changed to the ink corresponding to the pattern area ratio difference ΔS1 to ΔSn. Ink film thickness distributions Md1 ′ to Mdn ′ on which the film thickness distributions are superimposed are formed. The ink film thickness distribution is not superimposed on the range corresponding to the ink fountain key 4 in which the pattern area ratio difference ΔS is negative.

(4) The calling operation of the ink calling roller 5 is stopped, and the opening amount of the ink fountain keys 4-1 to 4-n is set to a value corresponding to the pattern of the printing plate 7 'of the next print job. That is, the value is set according to the pattern of the next print job. Further, the ink roller group 6 is divided into an upstream roller small group 6A and a downstream roller small group 6B (division at the start of printing). As a result, the ink film thickness distribution Md ′ of the ink roller group 6 is equal to the ink film thickness distribution Md′A of the upstream roller subgroup 6A and the downstream roller subgroup 6B, as shown in FIG. It is divided into an ink film thickness distribution Md′B.

(5) The ink application rollers 6-1 to 6-4 and the swimsuit roller 12 are applied, and only the plate cylinder 8 and the rubber cylinder 9 are applied. That is, the ink application rollers 6-1 to 6-4 and the swim roller 12 are brought into contact with the plate surface of the printing plate 7 ', and the rubber cylinder 9 is attached only to the plate cylinder 8 (calling operation is stopped). ) As a result, the small roller group 6B, the swimsuit roller 12, the plate cylinder 8, and the rubber cylinder 9 on the downstream side are brought into a wearing state (FIG. 10 (e)).

(6) In this state, the printing press is rotated by the number of rotations N4 at the time of plate cylinder / rubber cylinder pre-inking, and the printing plate 7 ′ in which the ink in the roller group 6B on the downstream side is mounted on the plate cylinder 8 and The rubber cylinder 9 is supplied (FIG. 10 (f)). In this case, only the ink having a relatively thin ink film thickness distribution Md′B in the roller group 6B on the downstream side is supplied to the printing plate 7 ′ and the rubber cylinder 9, and in the printing plate 7 ′ and the rubber cylinder 9 It is prevented that the ink film thickness distribution becomes too thick.

(7) Thereafter, the upstream roller small group 6A and the downstream roller small group 6B are connected and returned to one ink roller group 6 (FIG. 10G), and the ink calling roller 5 is called. The rubber cylinder 9 is also attached to the impression cylinder 10, that is, the cylinder cylinder 8 is brought into contact with the plate cylinder 8, the rubber cylinder 9 and the impression cylinder 10 (see FIG. 2). Printing of the next print job using the mounted printing plate 7 ′ is started.

  In this case, the ink film thickness distribution at the time of printing the next print job (final ink film thickness distribution at the time of final printing) is created during printing. At this time, since the ink film thickness distribution Md′B ′ in the roller small group 6B and the plate cylinder 8 and the rubber cylinder 9 on the downstream side is thin, the ink quickly flows from the upstream side to the downstream side, and the ink roller group 6 In addition, the ink film thickness distribution Me (FIG. 10H) during the main printing is rapidly formed on the plate cylinder 8 and the rubber cylinder 9.

  As can be seen by comparing the operation of the pattern 2 (pattern without removal) shown in FIG. 10 with the operation of the pattern 1 (pattern with removal) shown in FIG. 7, the operation of pattern 2 (pattern without removal). Then, ink scraping (removing) is not performed, and only ink superposition is performed. Therefore, when the operation of the pattern 2 is selected, the ink film thickness distribution Me during the main printing is formed on the ink roller group 6, the plate cylinder 8 and the rubber cylinder 9 in a shorter time than the operation of the pattern 1. Become.

  In the case of pattern 2, as in the case of pattern 1, before the ink roller group 6 is divided into the upstream roller small group 6A and the downstream roller small group 6B, the downstream roller small group 6B is printed on the plate. Then, the ink roller group 6 is divided into an upstream roller small group 6A and a downstream roller small group 6B (FIG. 11 (e)). It may be.

[Detailed operation of print job switching control device]
When switching print jobs, the operator turns on the print stop switch 107. Then, the CPU 101 confirms that the print stop switch 107 is turned on (FIG. 12: YES in step S101), outputs a paper feed stop command to the paper feeding device 124, and stops paper feeding to the printing press. At the same time (step S102), a cylinder removal command, an ink application roller removal instruction, and a swim roller removal instruction are output to the printing unit 125 (steps S103, S104, and S105).

  That is, the rubber cylinder 9 is detached from the plate cylinder 8 and the impression cylinder 10 in accordance with the cylinder removal command. Further, the ink application rollers 6-1 to 6-4 are removed according to the command for removing the ink application roller, and are separated from the printing plate 7. Further, the swimsuit roller 12 is removed by the command to remove the swimsuit roller, and is separated from the printing plate 7. Further, the CPU 101 outputs a stop signal to the driving motor driver 110 (step S106), and stops the driving motor 109. As a result, the printing press stops (FIGS. 7A and 10A).

[Transfer of the pattern area ratio of the plate of the previous print job]
The CPU 101 sets the count value N in the memory M1 to 1 (step S107), reads the count value N from the memory M1 (FIG. 13: step S108), and displays the pattern area ratio (previous printing) at the Nth address position in the memory M2. The pattern area ratio of the range corresponding to the Nth ink fountain key of the printing plate 7 used in the job is read, and the pattern area ratio of the range corresponding to the Nth ink fountain key of the previous print job is read at the Nth address position of the memory M3. (Step S109).

  Then, 1 is added to the count value N in the memory M1 (step S110), the total number n of ink fountain keys is read from the memory M4 (step S111), and the count value N exceeds the total number n of ink fountain keys (YES in step S112). The processing operations in steps S108 to S112 are repeated. As a result, the pattern area ratios S1b to Snb of the printing plate 7 used in the previous print job in the range corresponding to the ink fountain keys 4-1 to 4-n are read from the memory M2, and the ink fountain key 4-1 of the previous print job is read. Are stored in the memory M3 as the pattern area ratios S1a to Sna in a range corresponding to ˜4-n.

[Enter the pattern area ratio of the printing plate for the next print job]
Next, the CPU 101 stores the pattern area ratio in the range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate 7 'input from the input device 104 in the memory M2. In this embodiment, the measurement of the pattern area ratio in the range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate 7 ′ is shown in Patent Document 5 and Patent Document 6 by the present applicant. Using the “Picture Area Ratio Measuring Device” like this, write the pattern area ratio measured using this “Picture Area Ratio Measuring Device” into a portable memory, and enter the portable memory with this pattern area ratio written in. By setting in the apparatus 104, the pattern area ratio in a range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate 7 ′ is input. The CPU 101 and the “pattern area ratio measuring device” are connected online, and the pattern area ratio in the range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate 7 ′ is directly captured from the “pattern area ratio measuring device”. You may do it.

  When the portable memory is set in the input device 104, that is, when the picture area ratio of the printing plate 7 'in the range corresponding to the ink fountain keys 4-1 to 4-n is input (YES in step S113). The count value N in the memory M1 is set to 1 (step S114), the count value N is read from the memory M1 (step S115), and the pattern area ratio of the printing plate 7 ′ in the range corresponding to the Nth ink fountain key is set to a portable type. The data is read from the memory and stored in the address position for the Nth ink fountain key in the memory M2 (step S116).

  Then, 1 is added to the count value N in the memory M1 (step S117), the total number n of ink fountain keys is read from the memory M4 (step S118), and the count value N exceeds the total number n of ink fountain keys (YES in step S119). ), The processing operation of steps S115 to S119 is repeated. As a result, the pattern area ratio in the range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate 7 ′ is read from the portable memory and corresponds to the ink fountain keys 4-1 to 4-n of the next print job. The pattern area ratios S1b to Snb in the range are stored in the memory M2.

[Plate replacement / washing]
On the other hand, the operator stops the printing press and removes the ink application rollers 6-1 to 6-4 and the swim roller 12 (FIGS. 7A and 10A), and the plate cylinder 8. Is replaced with a plate 7 ′ for the next print job, and the rubber cylinder 9 is cleaned (FIGS. 7B and 10B).

[Confirmation of whether the number of ink fountain keys whose pattern area ratio difference ΔS is greater than or equal to the pattern area ratio difference determination reference value ΔSth is greater than or equal to the determination reference value nth for the number of ink fountain keys]
When the print job switching start switch 108 is turned on (YES in step S120), the CPU 101 sets the count value M in the memory M5 to 0 (step S121), and sets the count value N in the memory M1 to 1 (FIG. 15). Step S122), the count value N in the memory M1 is read (Step S123), and the pattern area ratio SNa in the range corresponding to the Nth ink fountain key of the print job before the Nth address position in the memory M3 is read (Step S123). S124). Also, the pattern area ratio SNb in the range corresponding to the Nth ink fountain key of the next print job is read from the Nth address position of the memory M2 (step S125).

  Then, the CPU 101 subtracts the pattern area ratio SNa of the range corresponding to the Nth ink fountain key of the previous print job from the pattern area ratio SNb of the range corresponding to the Nth ink fountain key of the next print job. The pattern area ratio difference ΔSN (ΔSN = SNb−SNa) is determined as the index value difference of the ink fountain key, and the calculated pattern area ratio difference ΔSN of the Nth ink fountain key is written in the Nth address position of the memory M6 (step S126).

  Then, the pattern area ratio difference determination reference value ΔSth (positive value) is read from the memory M7 (step S127), and the pattern area ratio difference ΔSN of the Nth ink fountain key and the pattern area ratio difference determination reference value ΔSth (positive value). ) (FIG. 16: step S128). Here, if ΔSN ≧ ΔSth (YES in step S128), the CPU 101 adds 1 to the count value M in the memory M5 (step S129), and proceeds to step S130. On the other hand, if ΔSN ≧ ΔSth is not satisfied (NO in step S128), the process immediately proceeds to step S130 without passing through step S129.

  Then, the CPU 101 adds 1 to the count value N in the memory M1 (step S130), reads the total number n of ink fountain keys from the memory M4 (step S131), and until the count value N exceeds the total number n of ink fountain keys (step S132). YES), the processing operation of steps S123 to S132 is repeated. As a result, the number of ink fountain keys whose pattern area ratio difference ΔS is equal to or larger than the pattern area ratio difference determination reference value ΔSth is counted as the count value M.

  When the count value N exceeds the total number n of ink fountain keys (YES in step S132), the CPU 101 reads the count value M in the memory M5 (step S133), and reads the determination reference value nth for the number of ink fountain keys in the memory M8. (Step S134), it is confirmed whether or not the count value M is equal to or greater than the ink fountain key number determination reference value nth (Step S135).

[Pattern 1 (with removal): When the number of ink fountain keys whose pattern area ratio difference ΔS is greater than or equal to the pattern area ratio difference criterion value ΔSth is not greater than or equal to the criterion number nth of ink fountain key numbers]
When the count value M is not equal to or greater than the ink fountain key number determination reference value nth (NO in step S135), the CPU 101 performs a specific operation of the above-described pattern 1 (removable pattern) (FIGS. 7C to 7F). to go into. For example, if the total number n of ink fountain keys is 30, then the ink fountain key number judgment reference value nth is 28, and if the count value M is not 28 or more, the operation specific to pattern 1 is entered.

[Division of ink roller group]
In this case, the CPU 101 outputs an operation stop signal to the ink calling device 115 (FIG. 23: Step S179), and stops the calling operation of the ink calling roller 5. Then, a division signal is output to the roller group dividing / coupling air cylinder valve 117 (step S180), and the ink roller group 6 is divided into an upstream roller subgroup 6A and a downstream roller subgroup 6B (FIG. 3).

  Thereby, the ink film thickness distribution Mc of the ink roller group 6 is, as shown in FIG. 7C, the ink film thickness distribution McA of the upstream roller small group 6A and the ink film thickness of the downstream roller small group 6B. The distribution is divided into McB.

[Scraping of ink in a small group of rollers on the upstream side]
Next, the CPU 101 reads out the rotational speed Vpr during pre-inking from the memory M11 (step S181), and outputs the rotational speed Vpr during pre-inking to the driving motor driver 110 via the D / A converter 112 (step S182). ). As a result, the printing press starts to rotate, and its speed increases to the rotational speed Vpr during pre-inking.

  Then, the CPU 101 outputs an arrival signal to the air scraper blade attaching / detaching air cylinder valve 123 (step S183). As a result, as shown in FIG. 4, the ink scraping blade attaching / detaching air cylinder 122 is retracted, the ink scraping blade 15 comes into contact with the peripheral surface of the roller 6A2, and the ink in the roller small group 6A on the upstream side. Scraping (removal of ink) is started.

  The CPU 101 continues to remove the ink in the upstream roller small group 6A until the number of rotations of the printing press reaches the number of rotations N2 at the time of ink scraping in the memory M16. That is, the CPU 101 outputs an arrival signal to the air cylinder valve 123 for removing and attaching the ink scraping blade (step S183), and then outputs a reset signal and an enable signal to the counter 114 for counting the number of rotations of the printing press (step S184). The output of the reset signal to the counter 114 for counting the number of rotations of the printing press is stopped (step S185), and the counting operation from zero of the counter 114 for counting the number of rotations of the printing press is started. Then, the count value is read from the counter 114 for counting the number of rotations of the printing press and stored in the memory M13 (FIG. 24: Step S186), and the number of rotations N2 at the time of ink scraping in the memory M16 is read (Step S187). The processing operations of steps S186 to S188 are repeated until the count value of the counter 114 for counting the number of rotations of the machine reaches the number of rotations N2 during ink scraping (YES in step S188).

  When the count value of the counter 114 for counting the number of rotations of the printing press reaches the number of rotations N2 at the time of ink scraping (YES in step S188), a de-signal is sent to the air cylinder valve 123 for removing the ink scraping blade. This is output (step S189), and the removal of the ink in the roller group 6A on the upstream side is completed.

  As a result, as shown in FIG. 7D, the ink film thickness distribution McA of the upstream roller small group 6A becomes almost zero. At this time, the ink film thickness distribution of the downstream roller small group 6B is leveled by the number of rotations N2 at the time of ink scraping, and becomes a flat ink film thickness distribution McB '.

[Set the opening amount of the ink fountain key according to the pattern of the plate of the next print job]
Next, the CPU 101 sets the count value N in the memory M1 to 1 (step S190), reads the count value N from the memory M1 (step S191), and starts the next printing from the address position for the Nth ink fountain key in the memory M2. The pattern area ratio SNb in the range corresponding to the Nth ink fountain key of the job is read (step S192).

  Then, the pattern area ratio-ink fountain key opening amount conversion table in the memory M17 is read (step S193), and the range corresponding to the Nth ink fountain key of the next print job is read using this pattern area ratio-ink fountain key opening amount conversion table. From the pattern area ratio SNb, the opening amount of the Nth ink fountain key of the next print job (the opening amount of the Nth ink fountain key corresponding to the pattern of the printing plate 7 ′ of the next print job) θNb is obtained, and the next The opening amount θNb of the Nth ink fountain key of the print job is stored in the address position for the Nth ink fountain key in the memory M15 (step S194) and transmitted to the Nth ink fountain key control device 300 (step S195).

  Then, 1 is added to the count value N in the memory M1 (step S196), the total number n of ink fountain keys is read from the memory M4 (step S197), and the count value N exceeds the total number n of ink fountain keys (YES in step S198). The processing operations in steps S191 to S198 are repeated.

  As a result, the opening amounts θ1b to θnb of the ink fountain keys 4-1 to 4-n corresponding to the pattern of the printing plate 7 ′ in the range corresponding to the ink fountain keys 4-1 to 4-n are obtained and stored in the memory M15. At the same time, it is transmitted to the ink fountain key control devices 300-1 to 300-n.

[Confirmation that the ink fountain key opening amount setting is complete]
Next, the CPU 101 sets the count value N in the memory M1 to 1 (FIG. 26: step S199), reads the count value N from the memory M1 (step S200), and opens the ink fountain key from the Nth ink fountain key control device 300. The presence or absence of a setting completion signal is confirmed (step S201).

  If the completion signal for the ink fountain key opening amount has not been transmitted from the Nth ink fountain key control device 300 (NO in step S201), the process returns to step S199, and the count value N in the memory M1 is set to 1. S199 and S200 are repeated.

  If the Nth ink fountain key control device 300 has transmitted a setting completion signal for the ink fountain key opening amount (YES in step S201), 1 is added to the count value N in the memory M1 (step S202), and from the memory M4. The total number n of ink fountain keys is read (step S203), and the count value N is compared with the total number n of ink fountain keys (step S204).

  The CPU 101 repeats the processing operations in steps S200 to S204 until the count value N matches the total number n of ink fountain keys. When the count value N exceeds the total number n of ink fountain keys (YES in step S204), that is, when it is confirmed that setting completion signals have been transmitted from all the ink fountain key control devices 300, the CPU 101 sets the ink fountain key opening amount. The ink fountain key opening amount setting completion signal is transmitted to all the ink fountain key control devices 300 (300-1 to 300-n) (step S205).

[Ink roller group connection]
Next, the CPU 101 outputs a connection signal to the roller group dividing / connecting air cylinder valve 117 (step S206), and connects the upstream roller subgroup 6A and the downstream roller subgroup 6B. Return to the ink roller group 6 (FIG. 7E).

[Pre-inking with removal (formation of ink film thickness distribution)]
Next, the CPU 101 reads the rotation amount of the ink fountain roller stored in the memory M12 (step S207), and transmits the read rotation amount of the ink fountain roller to the ink fountain roller control device 200 (FIG. 27: step). S208). In response to the ink fountain roller rotation amount reception completion signal from the ink fountain roller control device 200 (YES in step S209), an operation signal is output to the ink call device 115 (step S210), and the ink call roller 5 is called. Start operation. The CPU 101 continues the calling operation of the ink calling roller 5 until the number of rotations of the printing press reaches the number of rotations N3 during pre-inking with removal in the memory M18 (steps S211 to S215).

  That is, a reset signal and an enable signal are output to the counter 114 for counting the number of rotations of the printing press (step S211), and output of the reset signal to the counter 114 for counting the number of rotations of the printing press is stopped (step S212). The counting operation from zero of the counter 114 for counting the number of rotations of the machine is started. Then, the count value is read from the counter 114 for counting the number of rotations of the printing press and stored in the memory M13 (step S213), and the number N3 of rotations during pre-inking with removal in the memory M18 is read (step S214). Until the count value of the counter 114 for counting the number of rotations of the machine reaches the number of rotations N3 at the time of pre-inking with removal (YES in step S215), the processing operations in steps S213 to S215 are repeated.

  As a result, an ink film thickness distribution Md corresponding to the pattern of the printing plate 7 'of the next print job is formed on the ink roller group 6 (FIG. 7 (f)).

  When the count value of the counter 114 for counting the number of rotations of the printing press reaches the number of rotations N3 at the time of pre-inking with removal (YES in step S215), the CPU 101 outputs an operation stop signal to the ink calling device 115, The calling operation of the calling roller 5 is stopped (FIG. 28: Step S216).

[Ink roller group division (roller group subdivision)]
Then, the CPU 101 outputs a division signal to the roller group dividing / coupling air cylinder valve 117 (step S217), and the ink roller group 6 is re-divided into the upstream roller small group 6A and the downstream roller small group 6B. Divide (see FIG. 3).

  As a result, the ink film thickness distribution Me of the ink roller group 6 is, as shown in FIG. 7G, the ink film thickness distribution MdA of the upstream roller small group 6A and the ink film thickness of the downstream roller small group 6B. The distribution is divided into MdB.

[Set downstream roller group, plate cylinder and rubber cylinder in a worn state]
Next, the CPU 101 outputs a swim roller application command, an ink application roller command, and a plate cylinder and rubber cylinder command to the printing unit 125 (steps S218, S219, and S220). That is, the swimsuit roller 12 is put into contact with the printing plate 7 'in accordance with a swimsuit roller wearing command. Further, the ink application rollers 6-1 to 6-4 are attached in accordance with the ink application roller application command, and are brought into contact with the printing plate 7 ′. In addition, only the plate cylinder 8 and the rubber cylinder 9 are put into a wearing state in accordance with a wearing instruction for the plate cylinder and the rubber cylinder. That is, the rubber cylinder 9 is attached only to the plate cylinder 8. As a result, the small roller group 6B on the downstream side, the plate cylinder 8 and the rubber cylinder 9 are put into a worn state (FIG. 7 (h)).

[Plate cylinder / rubber cylinder pre-inking (Ink supply to plate cylinder / rubber cylinder)]
In this state, the CPU 101 rotates the printing press until the number of rotations of the printing press reaches the number of rotations N4 during plate cylinder / rubber cylinder pre-inking in the memory M19 (steps S221 (FIG. 28) to S225). FIG. 29)).

  That is, a reset signal and an enable signal are output to the counter 114 for counting the number of rotations of the printing press (step S221), and output of the reset signal to the counter 114 for counting the number of rotations of the printing press is stopped (step S222). The counting operation from zero of the counter 114 for counting the number of rotations of the machine is started. Then, the count value is read from the counter 114 for counting the number of rotations of the printing press and stored in the memory M13 (step S223), and the number N4 of rotations during plate cylinder / rubber cylinder pre-inking in the memory M19 is read (step S224). Until the count value of the counter 114 for counting the number of rotations of the printing press reaches the number of rotations N4 during plate cylinder / rubber cylinder pre-inking (YES in step S225), the processing operations in steps S223 to S225 are repeated.

  As a result, the ink in the roller group 6B on the downstream side is supplied to the printing plate 7 'and the rubber cylinder 9 mounted on the plate cylinder 8 (FIG. 7 (i)). In this case, only the ink having a relatively thin ink film thickness distribution MdB in the downstream roller small group 6B is supplied to the printing plate 7 ′ and the rubber cylinder 9, and the ink film on the printing plate 7 ′ and the rubber cylinder 9 is supplied. The thickness distribution is prevented from becoming too thick.

[Print next print job (start printing)]
[Ink roller group connection]
When the count value of the counter 114 for counting the number of rotations of the printing press reaches the number of rotations N4 during plate cylinder / rubber cylinder pre-inking (YES in step S225), the CPU 101 outputs an operation signal to the ink calling device 115 (step S225). S226), the calling operation of the ink calling roller 5 is started.

  Then, the CPU 101 outputs a connection signal to the roller group dividing / connecting air cylinder valve 117 (step S227), and reconnects the upstream roller small group 6A and the downstream roller small group 6B (FIG. 2). (Refer to FIG. 7 (j)).

[Feed & torso]
Then, the CPU 101 reads the printing speed Vp from the memory M20 (step S228), outputs a rotation command for the printing speed to the driving motor driver 110 via the D / A converter 112 (step S229), and sets the printing machine speed. The printing speed is Vp. Further, a paper feed command is output to the paper feeder 124 (step S230), and paper feeding to the printing press is started. Also, a cylinder insertion instruction (an instruction to attach the impression cylinder and the rubber cylinder) is output to the printing unit 125 (step S231), and the rubber cylinder 9 is also attached to the impression cylinder 10. In other words, the cylinder cylinder 8 is in a state of being brought into contact with the plate cylinder 8, the rubber cylinder 9, and the impression cylinder 10 (see FIG. 2). As a result, printing of the next print job using the printing plate 7 ′ is started.

  In this case, the ink film thickness distribution at the time of printing the next print job (final ink film thickness distribution at the time of final printing) is created during printing. At this time, since the ink film thickness distribution MdB ′ in the roller small group 6B and the plate cylinder 8 and the rubber cylinder 9 on the downstream side is thin, the ink quickly flows from the upstream side to the downstream side, and the ink roller group 6 and the plate The ink film thickness distribution Me during the main printing is quickly formed on the cylinder 8 and the rubber cylinder 9 (FIG. 7 (k)).

[Pattern 2 (pattern without removal): When the number of ink fountain keys whose pattern area ratio difference ΔS is greater than or equal to the pattern area ratio difference criterion value ΔSth is greater than or equal to the number of ink fountain key criterion values nth]
When the count value M is equal to or greater than the ink fountain key number determination reference value nth (FIG. 16: YES in step S135), the CPU 101 performs a specific operation of the above-described pattern 2 (non-removing pattern) (FIG. 10C). )to go into. For example, when the total number n of ink fountain keys is 30, the number of ink fountain key judgment reference value nth is 28, and if the count value M is 28 or more, the operation specific to pattern 2 is entered.

[Setting of the opening amount of each ink fountain key to the opening amount according to the pattern area ratio difference ΔS]
The CPU 101 sets the count value N in the memory M1 to 1 (FIG. 17: step S136), reads the count value N from the memory M1 (step S137), and the Nth ink fountain key pattern from the Nth address position in the memory M6. The area ratio difference ΔSN is read (step S138).

  Then, the pattern area ratio difference during pre-inking without ink removal-ink fountain key opening amount conversion table in the memory M9 is read (step S139), and the pattern area ratio difference during pre-inking without removal-ink fountain key opening amount conversion table. Is used to obtain the opening amount of the Nth ink fountain key at the time of pre-inking without removal from the pattern area ratio difference ΔSN of the Nth ink fountain key, and is stored in the Nth address position of the memory M10 (step S140). And the Nth ink fountain key control device 300 (step S141).

  Then, 1 is added to the count value N in the memory M1 (step S142), the total number n of ink fountain keys is read from the memory M4 (step S143), and the count value N exceeds the total number n of ink fountain keys (YES in step S144). The processing operations in steps S137 to S144 are repeated.

  As a result, the opening amount at the time of pre-inking without removal corresponding to the pattern area ratio differences ΔS1 to ΔSn of the ink fountain keys 4-1 to 4-n is obtained and stored in the memory M10, and at the same time, the ink fountain key control device 300- 1 to 300-n.

[Confirmation that the ink fountain key opening amount setting is complete]
Next, the CPU 101 sets the count value N in the memory M1 to 1 (FIG. 18: step S145), reads the count value N from the memory M1 (step S146), and opens the ink fountain key from the Nth ink fountain key control device 300. The presence / absence of a setting completion signal is confirmed (step S147).

  If no completion signal for the ink fountain key opening amount has been transmitted from the Nth ink fountain key control device 300 (NO in step S147), the process returns to step S145, and the count value N in the memory M1 is set to 1. S146 and S147 are repeated.

  If a setting completion signal for the ink fountain key opening amount is transmitted from the Nth ink fountain key control device 300 (YES in step S147), 1 is added to the count value N in the memory M1 (step S148), and the memory M4 The total number n of ink fountain keys is read (step S149), and the count value N is compared with the total number n of ink fountain keys (step S150).

  The CPU 101 repeats the processing operations in steps S146 to S150 until the count value N matches the total number n of ink fountain keys. When the count value N exceeds the total number n of ink fountain keys (YES in step S150), that is, when it is confirmed that setting completion signals have been transmitted from all the ink fountain key control devices 300, the CPU 101 sets the ink fountain key opening amount. The ink fountain key opening amount setting completion signal is transmitted to all the ink fountain key control devices 300 (300-1 to 300-n) (step S151).

[Pre-inking without removal (superimposition of ink thickness distribution)]
Next, the CPU 101 reads out the rotational speed Vpr during pre-inking from the memory M11 (FIG. 19: Step S152), and outputs the rotational speed Vpr during pre-inking to the driving motor driver 110 via the D / A converter 112. (Step S153). As a result, the printing press starts to rotate, and its speed increases to the rotational speed Vpr during pre-inking.

  Further, the rotation amount of the ink fountain roller stored in the memory M12 is read (step S154), and the read rotation amount of the ink fountain roller is transmitted to the ink fountain roller control device 200 (step S155). In response to the ink fountain roller rotation amount reception completion signal from the ink fountain roller control device 200 (YES in step S156), an operation signal is output to the ink calling device 115 (step S157), and the ink calling roller 5 is called. Start operation. The CPU 101 continues the calling operation of the ink calling roller 5 until the number of rotations of the printing press reaches the number of rotations N1 during pre-inking without removal in the memory M14 (steps S158 (FIG. 19) to S162 (FIG. 20). )).

  That is, a reset signal and an enable signal are output to the counter 114 for counting the number of rotations of the printing press (step S158), and the output of the reset signal to the counter 114 for counting the number of rotations of the printing press is stopped (step S159). The counting operation from zero of the counter 114 for counting the number of rotations of the machine is started. Then, the count value is read from the counter 114 for counting the number of rotations of the printing press and stored in the memory M13 (step S160), and the number N1 of rotations during pre-inking without removal in the memory M14 is read (step S161). The processing operation of steps S160 to S162 is repeated until the count value of the counter 114 for counting the number of rotations of the machine reaches the number of rotations N1 during pre-inking without removing (YES in step S162).

  Thereby, the ink film thickness distribution Md in which the ink film thickness distribution according to the pattern area ratio differences ΔS1 to ΔSn is superimposed on the ink roller group 6 on the ink film thickness distribution according to the pattern of the printing plate 7 ′ of the previous print job. 'Is formed (FIG. 10C). That is, in the range corresponding to the ink fountain keys 4-1 to 4-n of the ink roller group 6, the ink film thickness distribution corresponding to the pattern of the printing plate 7 of the previous print job is changed to the ink corresponding to the pattern area ratio difference ΔS1 to ΔSn. Ink film thickness distributions Md1 ′ to Mdn ′ on which the film thickness distributions are superimposed are formed.

  When the count value of the counter 114 for counting the number of rotations of the printing press reaches the number of rotations N1 during pre-inking without removing (YES in Step S162), the CPU 101 outputs an operation stop signal to the ink calling device 115, The calling operation of the calling roller 5 is stopped (step S163).

[Set the ink fountain key opening amount for the next print job]
Next, the CPU 101 sets the count value N in the memory M1 to 1 (step S164), reads the count value N from the memory M1 (FIG. 21: step S165), and from the address position for the Nth ink fountain key in the memory M2, The pattern area ratio SNb in the range corresponding to the Nth ink fountain key of the next print job is read (step S166).

  Then, the pattern area ratio-ink fountain key opening amount conversion table in the memory M17 is read (step S167), and the range corresponding to the Nth ink fountain key of the next print job is read using this pattern area ratio-ink fountain key opening amount conversion table. From the pattern area ratio SNb, the opening amount of the Nth ink fountain key of the next print job (the opening amount of the Nth ink fountain key corresponding to the pattern of the printing plate 7 ′ of the next print job) θNb is obtained, and the next The opening amount θNb of the Nth ink fountain key of the print job is stored in the address position for the Nth ink fountain key in the memory M15 (step S168) and transmitted to the Nth ink fountain key control device 300 (step S169).

  Then, 1 is added to the count value N in the memory M1 (step S170), the total number n of ink fountain keys is read from the memory M4 (step S171), and the count value N exceeds the total number n of ink fountain keys (YES in step S172). The processing operations in steps S165 to S172 are repeated.

  As a result, the opening amounts θ1b to θnb of the ink fountain keys 4-1 to 4-n corresponding to the pattern of the next printing plate 7 ′ in the range corresponding to the ink fountain keys 4-1 to 4-n are obtained and stored in the memory M15. And is transmitted to the ink fountain key control devices 300-1 to 300-n.

[Confirmation that the ink fountain key opening amount setting is complete]
Next, the CPU 101 sets the count value N in the memory M1 to 1 (FIG. 22: Step S173), reads the count value N from the memory M1 (Step S174), and opens the ink fountain key from the Nth ink fountain key control device 300. The presence / absence of a setting completion signal is confirmed (step S175).

  Here, if the ink fountain key opening amount setting completion signal has not been transmitted from the Nth ink fountain key control device 300 (NO in step S175), the process returns to step S173, and the count value N in the memory M1 is set to 1. S174 and S175 are repeated.

  If the Nth ink fountain key control device 300 has transmitted a setting completion signal of the ink fountain key opening amount (YES in step S175), 1 is added to the count value N in the memory M1 (step S176), and the memory M4 The total number n of ink fountain keys is read (step S177), and the count value N is compared with the total number n of ink fountain keys (step S178).

  The CPU 101 repeats the processing operations in steps S174 to S178 until the count value N matches the total number n of ink fountain keys. When the count value N exceeds the total number n of ink fountain keys (YES in step S178), that is, when it is confirmed that setting completion signals have been transmitted from all the ink fountain key control devices 300, the CPU 101 sets the ink fountain key opening amount. Then, the process proceeds to step S217 (FIG. 28), and in the same manner as in the case of the above-described pattern 1, “dividing the ink roller group”, “the roller group on the downstream side and the plate cylinder and the rubber cylinder Through the processing operation of “Attaching”, “Plate cylinder / rubber cylinder pre-inking”, “Ink roller group connection”, “Feeding & cylinder feeding” (steps S218 to S231), and then using the printing plate 7 ′. Printing of the print job is started (FIGS. 10D to 10H).

[Embodiment 2: Example in which index value indicating ink supply amount according to printing plate pattern in range corresponding to ink fountain key is set as ink fountain key opening amount according to printing plate pattern]
In the first embodiment, the index value indicating the ink supply amount corresponding to the pattern of the printing plate in the range corresponding to the ink fountain key is set as the pattern area ratio of the printing plate. In the second embodiment, the pattern of the printing plate is used. The ink fountain key opening amount according to

  30 and 31 show the contents of the memory 126 in the second embodiment in a divided manner. The configuration of the print job switching control apparatus according to the second embodiment is the same as that of the print job switching control apparatus 100 shown in FIG.

  The memory 126 is provided with memories M31 to M51. A count value N is stored in the memory M31. The memory M32 stores the pattern area ratios S1b to Snb in a range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate of the next print job. The memory M33 stores picture area ratios S1a to Sna in a range corresponding to the ink fountain keys 4-1 to 4-n of the printing plate of the previous print job. The memory M34 stores the total number n of ink fountain keys of each printing unit. A count value M is stored in the memory M35. The memory M36 stores a pattern area ratio-ink fountain key opening amount conversion table. In the memory M37, opening amounts θ1a to θna of the ink fountain keys 4-1 to 4-n corresponding to the pattern of the printing plate of the previous print job are stored. The memory M38 stores the opening amounts θ1b to θnb of the ink fountain keys 4-1 to 4-n corresponding to the pattern of the printing plate of the next print job. In the memory M39, the ink fountain keys 4-1 to 4--4 corresponding to the printing plate pattern of the previous printing job from the opening amounts θ1b to θnb of the ink fountain keys 4-1 to 4-n corresponding to the printing plate image of the next printing job are stored. A value obtained by subtracting the opening amount θ1a to θna of n is stored as an opening amount difference Δθ1 (Δθ1 = Δθ1b−Δθ1a) to Δθn (Δθn = Δθnb−Δθna) of the ink fountain keys 4-1 to 4-n. The memory M40 stores an ink fountain key opening difference reference value Δθth.

  The memory M41 stores an ink fountain key number determination reference value nth. The memory M42 stores an ink fountain key opening amount difference-ink fountain key opening amount conversion table during pre-inking without removing. The memory M43 stores the opening amount of the ink fountain keys 4-1 to 4-n at the time of pre-inking without removing. The memory M44 stores the rotation speed Vpr of the printing press during pre-inking. The memory M45 stores the rotation amount of the ink fountain roller. The memory M46 stores the count value of the counter for counting the number of rotations of the printing press. The memory M47 stores the number of rotations N1 of the printing press during pre-inking without removing. The memory M48 stores the number of rotations N2 of the printing press at the time of ink scraping. The memory M49 stores the number of rotations N3 of the printing press during pre-inking with removal. The memory M50 stores the number of rotations N4 of the printing press during plate cylinder / rubber cylinder pre-inking. The memory M51 stores the printing speed Vp.

  The flowchart of the print job switching operation executed by the CPU 101 of the print job switching control apparatus 100 according to the second embodiment is divided into FIGS. 32 to 48. Since the processing operations in steps S301 (FIG. 32) to S320 (FIG. 34) are the same as the processing operations in steps S101 (FIG. 12) to S120 (FIG. 14) of the first embodiment, the description thereof will be omitted.

  When the print job switching start switch 108 is turned on (YES in step S320), the CPU 101 sets the count value M in the memory M35 to 0 (step S321), and sets the count value N in the memory M31 to 1 (FIG. 35). Step S322), the count value N in the memory M31 is read (Step S323), and the pattern area ratio SNa in the range corresponding to the Nth ink fountain key of the print job before the Nth address position in the memory M33 is read (Step S323). S324).

  Then, the pattern area ratio-ink fountain key opening amount conversion table in the memory M36 is read (step S325), and the pattern in the range corresponding to the Nth ink fountain key of the previous print job is used using the pattern area ratio-ink fountain key opening amount conversion table. From the area ratio SNa, the opening amount of the Nth ink fountain key of the previous print job (the opening amount of the Nth ink fountain key corresponding to the pattern of the printing plate 7 of the previous print job) θNa is obtained, and the Nth address of the memory M37 The position is stored (step S326).

  In addition, the pattern area ratio SNb in the range corresponding to the Nth ink fountain key of the next print job is read from the Nth address position of the memory M32 (step S327), and the next image area ratio-ink fountain key opening amount conversion table is used. From the pattern area ratio SNb in the range corresponding to the Nth ink fountain key of the next print job, the opening amount of the Nth ink fountain key of the next print job (the Nth ink fountain key corresponding to the pattern of the printing plate 7 'of the next print job) Is obtained and stored in the Nth address position of the memory M38 (step S328).

  Then, the CPU 101 subtracts the opening amount θNa of the Nth ink fountain key of the previous print job from the opening amount θNb of the Nth ink fountain key of the next print job, and opens the difference ΔθN as the index value difference of the Nth ink fountain key. (Δθ = θNb−θNa) is obtained, and the obtained opening difference ΔθN of the Nth ink fountain key is written in the Nth address position of the memory M39 (step S329).

  Then, the ink fountain key opening difference difference reference value Δθth (positive value) is read from the memory M40 (FIG. 36: Step S330), and the Nth ink fountain key opening difference difference ΔθN and the ink fountain key opening difference difference determination value Δθth. (Positive value) is compared (step S331). Here, if ΔθN ≧ Δθth (YES in step S331), the CPU 101 adds 1 to the count value M in the memory M35 (step S332), and proceeds to step S333. On the other hand, if ΔθN ≧ Δθth is not satisfied (NO in step S332), the process immediately proceeds to step S333 without passing through step S332.

  Then, the CPU 101 adds 1 to the count value N in the memory M1 (step S333), reads the total number n of ink fountain keys from the memory M34 (step S334), and until the count value N exceeds the total number n of ink fountain keys (step S335). YES), the processing operations of steps S323 to S335 are repeated. As a result, the number of ink fountain keys whose opening amount difference Δθ is equal to or greater than the ink fountain key opening amount difference determination reference value Δθth is counted as the count value M.

  When the count value N exceeds the total number n of ink fountain keys (YES in step S335), the CPU 101 reads the count value M in the memory M35 (step S336), and reads the determination reference value nth for the number of ink fountain keys in the memory M41. (Step S337), it is confirmed whether or not the count value M is equal to or greater than the ink fountain key number determination reference value nth (Step S338).

  When the count value M is not equal to or greater than the ink fountain key number determination reference value nth (NO in step S338), the CPU 101 determines that the removal is necessary, and performs a unique operation of the above-described pattern 1 (pattern with removal) ( 7 (c) to (f)) are performed (steps S380 (FIG. 43) to S415 (FIG. 47)), and when the count value M is equal to or larger than the ink fountain key number determination reference value nth (YES in step S338), It is determined that the removal is not necessary, and the specific operation (FIG. 10C) of the above-described pattern 2 (non-removing pattern) is performed (steps S339 (FIG. 44) to S379 (FIG. 42)).

  Note that in an operation specific to pattern 1 (pattern with removal), in step S393, the opening amount θNb of the Nth ink fountain key of the next print job is read from the memory M38. That is, since the opening amount θNb of the Nth ink fountain key of the next print job has already been obtained in the previous step S328, the opening amount θNb of the obtained Nth ink fountain key of the next print job is stored in the memory M38. Read from and use.

  Others are the same as the processing operations in steps S179 (FIG. 23) to S216 (FIG. 28) described in the first embodiment, and thus the description of the processing operations in steps S380 to S415 is omitted.

  Further, in the operation specific to the pattern 2 (pattern without removal), in step S341 (FIG. 37), the opening difference ΔSN of the Nth ink fountain key is read from the Nth address position of the memory M39. Then, the ink fountain key opening difference between the ink fountain key and the ink fountain key at the time of pre-inking without removal in the memory M42 is read (step S342), and the ink fountain key opening amount at the time of pre-inking without removal is read. Difference-ink fountain key Using the ink fountain key opening amount conversion table, the opening amount of the Nth ink fountain key at the time of pre-inking without removal is obtained from the opening amount difference ΔθN of the Nth ink fountain key, and the Nth in the memory M43 (Step S343) and transmitted to the Nth ink fountain key control device 300 (step S344).

  Then, 1 is added to the count value N in the memory M1 (step S345), the total number n of ink fountain keys is read from the memory M34 (step S346), and the count value N exceeds the total number n of ink fountain keys (YES in step S347). The processing operations in steps S340 to S347 are repeated. As a result, the opening amount at the time of pre-inking without removal corresponding to the opening amount difference Δθ1 to Δθn of the ink fountain keys 4-1 to 4-n is obtained and stored in the memory M43, and the ink fountain key control device 300-1 Sent to ~ 300-n.

  In step S369 (FIG. 41), the opening amount θNb of the Nth ink fountain key of the next print job is read from the memory M38. That is, the opening amount θNb of the Nth ink fountain key of the next print job has already been obtained and stored in the memory M38, and is read from the memory M38 and used.

  Others are the same as the processing operations in steps S136 (FIG. 17) to S178 (FIG. 22) described in the first embodiment, and thus the description of the processing operations in steps S339 to S379 is omitted.

  After performing the operations specific to pattern 1 (pattern with removal) (FIGS. 7C to 7F) in this way (steps S380 to S415) or pattern 2 (pattern without removal). After performing the above operation (FIG. 10C) (steps S339 to S379), the CPU 101 determines “dividing the ink roller group”, “attaching the roller group on the downstream side to the plate cylinder and the rubber cylinder”, “ Through the steps of “plate cylinder / rubber cylinder pre-inking”, “connection of ink rollers”, and “paper feeding & cylinder loading” (steps S416 (FIG. 47) to S430 (FIG. 48)), the printing plate 7 ′ is used. Printing of the next print job is started (FIGS. 7 (g) to (k), FIGS. 10 (d) to (h)).

[Ink fountain roller control device]
FIG. 49 shows an outline of the internal configuration of the ink fountain roller control device 200. The ink fountain roller control device 200 includes a CPU 201, a RAM 202, a ROM 203, an ink fountain roller driving motor 204, an ink fountain roller driving motor driver 205, an ink fountain roller driving motor rotary encoder 206, an input / output interface (I / O, I / F) 207, 208 and memories 209, 210, and is connected to the print job switching control apparatus 100 via the interface 207. The memory 209 stores the received rotation amount of the ink fountain roller. The memory 210 stores a target rotation amount of the ink fountain roller.

  When the rotation amount of the ink fountain roller is sent from the print job switching control device 100 (FIG. 50: YES in step S501), the CPU 201 stores the received rotation amount in the memory 209 (step S502). Further, a rotation amount reception completion signal of the ink fountain roller is transmitted to the print job switching control device 100 (step S503). Further, the received rotation amount of the ink fountain roller is stored in the memory 210 as the rotation amount of the ink fountain roller (target rotation amount) (step S504). Then, the target rotation amount is read from the memory 210 (step S505), the target rotation speed of the ink fountain roller driving motor 204 is calculated from the target rotation amount (step S506), and the ink fountain roller driving motor driver 205 is calculated. The rotation amount of the feed and ink fountain roller is adjusted to the target rotation amount (step S507).

[Ink fountain key control device]
FIG. 51 shows an outline of the internal configuration of the ink fountain key control device 300 (300-1 to 300-n). The ink fountain key control device 300 includes a CPU 301, a RAM 302, a ROM 303, an ink fountain key drive motor 304, an ink fountain key drive motor driver 305, an ink fountain key drive motor rotary encoder 306, a counter 307, and an input / output interface (I / O, I / F) 308. , 309 and memories 310 to 313, and are connected to the print job switching control apparatus 100 via the interface 308. The memory 310 stores the received ink fountain key opening amount. The memory 311 stores a target ink fountain key opening amount. The memory 312 stores the count value of the counter 307. The memory 313 stores the current opening degree of the ink fountain key.

  When the ink fountain key opening amount is sent from the print job switching control device 100 (FIG. 52: YES in step S601), the CPU 301 stores the received opening amount in the memory 310 (step S602), and the received ink fountain key. Is stored in the memory 311 as a target opening amount (step S603).

  The count value is read from the counter 307 and stored in the memory 312 (step S604). The current ink fountain key opening amount is obtained from the read count value of the counter 307 and stored in the memory 313 (step S605). Is read out from the target ink fountain key opening amount (step S606). If the current ink fountain key opening amount is the same as the target opening amount (YES in step S607), the process immediately proceeds to step S616 (FIG. 53) for printing. An ink fountain key opening amount setting completion signal is output to the job switching control device 100.

  If the current ink fountain key opening amount is not the same as the target opening amount (NO in step S607), the ink fountain key drive motor 304 is driven until the current ink fountain key opening amount is the same as the target opening amount. Thereafter (steps S608 to S615 (FIG. 53)), an ink fountain key opening amount setting completion signal is output to the print job switching control apparatus 100 (step S616).

  That is, if the current ink fountain key opening amount is smaller than the target opening amount (YES in step S608), a forward rotation command is sent to the ink fountain key driving motor driver 305 (step S609), and the counter 307 calculates the count value. Reading (step S611), the current ink fountain key opening amount is calculated from the count value (step S612), the target ink fountain key opening amount is read from the memory 311 (step S613), and the current ink fountain key opening amount is the target. The processing operations in steps S611 to S614 are repeated until the opening degree of the ink fountain key coincides (YES in step S614).

  If the current ink fountain key opening amount is larger than the target opening amount (NO in step S608), a reverse rotation command is sent to the ink fountain key driving motor driver 305 (step S610), and the count value is read from the counter 307. (Step S611), the current ink fountain key opening amount is calculated from the count value (Step S612), and the target ink fountain key opening amount is read from the memory 311 (Step S613). The processing operations in steps S611 to S614 are repeated until the opening degree of the ink fountain key matches (YES in step S614).

  If the current ink fountain key opening amount matches the target ink fountain key opening amount in step S614 (YES in step S614), a stop command is output to the ink fountain key driving motor driver 305 (step S615), and print job switching is performed. A setting completion signal for the ink fountain key opening amount is output to the control device 100 (step S616).

  When the ink fountain key opening amount setting completion signal is output to the print job switching control device 100 (step S616), the CPU 301 receives the ink fountain key opening amount setting completion signal from the print job switching control device 100 (step S617). YES), the output of the ink fountain key opening amount setting completion signal to the print job switching control device 100 is stopped (step S618).

  In the above-described embodiment, the ink roller group 6 is divided into two parts, the upstream roller small group 6A and the downstream roller small group 6B (strictly divided into three if the roller 6C is included). You may make it divide | segment into many roller small groups, such as dividing into 3 or 4 parts. In that case, at least the most downstream roller subgroup among the divided roller subgroups and the plate cylinder on which the printing plate used in the next print job is mounted may be put on.

  In the above-described embodiment, the ink roller group 6 is divided and connected using the swing arm 14, but the mechanism for dividing and connecting the ink roller group 6 is limited to the mechanism using the swing arm. It goes without saying that it is not possible.

  In the above-described embodiment, the example in which the ink supplied to the printing plate 7 (7 ′) mounted on the plate cylinder 8 is transferred to the printing paper 11 through the rubber cylinder 9 has been described. The present invention is similarly applied to an example in which the ink supplied to the printing plate 7 (7 ′) mounted on the ink 8 is directly transferred to the printing paper 11 without going through the rubber cylinder 9 (see FIG. 54). And similar effects can be obtained.

  In the above-described embodiment, when the ink film thickness distribution corresponding to the pattern of the printing plate of the next printing job is formed on the ink roller group 6, the ink roller group 6 is replaced with the upstream roller small group 6A. Is divided into the small roller group 6B on the downstream side, but is not necessarily divided. That is, the present invention may be applied to an ink supply device that does not have a mechanism for dividing and connecting.

[Extension of the embodiment]
The present invention has been described above with reference to the embodiment. However, the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the technical idea of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Ink fountain, 2 ... Ink, 3 ... Ink fountain roller, 4 (4-1 to 4-n) ... Ink fountain key, 5 ... Ink calling roller, 6 ... Ink roller group, 6-1 to 6-4 ... Ink roller , 6A ... upstream roller subgroup, 6B downstream roller subgroup, 6A1, 6A2, 6B1, 6C ... roller, 7, 7 '... printing plate, 8 ... plate cylinder, 9 ... rubber cylinder, 10 ... pressure Cylinder, 11 ... printing paper (printed body), 12 ... swimsuit roller, 13 ... water boat, 14 ... swing arm, 15 ... ink scraping blade, 16 ... ink receiver, 101 ... CPU, 102 ... RAM, 103 ... ROM, 104 ... input device, 105 ... display device, 106 ... output device (printer, etc.), 107 ... print stop switch, 108 ... print job switching start switch, 109 ... primary motor of printing press, 110 ... primary motor driver, 11 ... Rotary encoder for driving motor, 112 ... D / A converter, 113 ... Home position detector of printing press, 114 ... Counter for counting the number of rotations of printing press, 115 ... Ink calling device, 116 ... for dividing and connecting roller groups Air cylinder, 117: Valve for dividing and connecting roller groups, 118: Air cylinder for attaching / detaching swimsuit roller, 119: Air cylinder valve for attaching / detaching swimsuit roller, 120 ... Air cylinder for attaching / detaching ink application roller, 121 ... Inking Valve for air cylinder for attaching / detaching roller, 122 ... Air cylinder for attaching / detaching ink scraping blade, 123 ... Valve for air cylinder for attaching / detaching ink scraping blade, 124 ... Paper feeding device, 125 ... Printing unit, 126 ... Memory, 127-1 ~ 127-10 Input / output interface (I / O, I / F), 1 0 ... print job switching control device, 200 ... ink fountain roller control device, 300 (300-1~300-n) ... ink fountain key control device.

Claims (18)

A plurality of ink fountain keys are provided, and the amount of ink supplied to the ink fountain roller from within the ink fountain is adjusted by adjusting the opening amount of these ink fountain keys. In the ink supply method of forming an ink film thickness distribution according to the pattern of the printing plate used in printing of the next print job, in the ink roller group in the ink supply device that supplies to the printing plate through
Ink corresponding to the printing plate image of the previous printing job in the range corresponding to each ink fountain key from the index value indicating the amount of ink supplied according to the printing plate image of the next printing job in the range corresponding to each ink fountain key An index value difference calculating step for obtaining a value obtained by subtracting an index value indicating the supply amount of each ink fountain key as an index value difference;
A counting step of counting the number of ink fountain keys whose index value difference of the ink fountain key determined in the index value difference calculating step is not less than a predetermined value in the positive direction;
When the number of ink fountain keys counted in the counting step is equal to or greater than a predetermined number, an opening amount setting step without removing is performed to set the opening amount of each ink fountain key to an opening amount corresponding to the index value difference of each ink fountain key. When,
The ink calling roller is called a predetermined number of times in a state where the opening amount of each ink fountain key is set to the opening amount corresponding to the index value difference of each ink fountain key by the opening amount setting step when the removing is not performed, An ink film thickness distribution superimposing step for directly superimposing the ink film thickness distribution according to the index value difference of each ink fountain key on the ink film thickness distribution according to the pattern of the printing plate of the previous print job formed on the roller group; An ink supply method comprising: The ink supply method according to claim 1,
The ink film thickness distribution superimposing step includes:
After directly superimposing the ink film thickness distribution according to the index value difference of each ink fountain key on the ink film thickness distribution according to the pattern of the printing plate of the previous print job formed on the ink roller group, each of the ink fountain keys An ink supply method characterized in that the opening amount is set to a value corresponding to the pattern of the printing plate of the next print job. In the ink supply method according to claim 1 or 2,
When the number of ink fountain keys counted by the counting step is not equal to or greater than a predetermined number, a roller group dividing step with removal for dividing the ink roller group into a plurality of roller subgroups;
An ink removing step of scraping and removing the ink in a part of the plurality of roller subgroups divided by the roller group dividing step with the removing with an ink scraping member. A characteristic ink supply method. In the ink supply method according to claim 3,
A roller group connecting step of connecting the plurality of divided roller small groups and returning them to one ink roller group after ink in the partial roller small groups is removed by the ink removing step;
An opening amount setting step at the start of printing in which the opening amount of each ink fountain key is set to a value corresponding to the pattern of the printing plate of the next print job;
In a state where the ink roller group is returned to one ink roller group by the roller group connecting step, the opening amount of each ink fountain key is changed to the image of the printing plate of the next printing job by the opening amount setting step at the start of printing. The ink call roller is called a predetermined number of times in a state set to a corresponding value, and the ink film thickness distribution corresponding to the printing plate pattern of the next print job is applied to the ink roller group returned to the one. An ink supply method comprising: an ink film thickness distribution forming step to be formed. In the ink supply method according to claim 2,
A plurality of ink roller groups in which the ink film thickness distribution corresponding to the index value difference of each ink fountain key is directly superimposed on the ink film thickness distribution corresponding to the pattern of the printing plate of the previous print job by the ink film thickness distribution superimposing step. Roller group dividing step at the start of printing for dividing into roller small groups;
After being divided by the roller group dividing step at the start of printing or before being divided, at least the most downstream roller small group of the plurality of roller small groups and a printing plate to be used in the next print job are mounted. A wearing step for bringing the plate cylinder into a worn state;
The plate cylinder and the roller small group that have been divided by the roller group dividing step at the start of printing and are in the wearing state by the applying step are rotated by a predetermined number of rotations, and the ink in the roller small group is attached to the plate cylinder An ink supply method comprising: an ink supply step for supplying to an applied printing plate. In the ink supply method according to claim 4,
A roller group dividing step at the start of printing, in which the ink roller group in which the ink film thickness distribution corresponding to the pattern of the printing plate of the next printing job is formed by the ink film thickness distribution forming step is divided into a plurality of small roller groups; ,
After being divided by the roller group dividing step at the start of printing or before being divided, at least the most downstream roller small group of the plurality of roller small groups and a printing plate to be used in the next print job are mounted. A wearing step for bringing the plate cylinder into a worn state;
The plate cylinder and the roller small group that have been divided by the roller group dividing step at the start of printing and are in the wearing state by the applying step are rotated by a predetermined number of rotations, and the ink in the roller small group is attached to the plate cylinder An ink supply method comprising: an ink supply step for supplying to an applied printing plate. In the ink supply method according to claim 5 or 6,
The wearing step includes
After being divided by the roller group dividing step at the start of printing or before being divided, at least the most downstream roller small group of the plurality of roller small groups and a printing plate to be used in the next print job are mounted. The plate cylinder being put on, and the rubber cylinder for transferring the ink supplied to the printing plate mounted on the plate cylinder to the printing body,
The ink supply step includes
The plate cylinder, the roller small group, and the rubber cylinder, which are divided by the roller group dividing step at the start of printing and are in the wearing state by the applying step, are rotated by a predetermined number of revolutions, and the ink in the roller small group is transferred to the plate An ink supply method comprising: supplying to a printing plate mounted on a cylinder and the rubber cylinder. In the ink supply method according to any one of claims 5 to 7,
After the ink supply in the ink supply step, the plurality of divided roller small groups are connected and returned to one ink roller group, and the next printing plate mounted on the plate cylinder is used. An ink supply method comprising: a printing start step for starting printing of a print job. In the ink supply method according to any one of claims 1 to 8,
The index value indicating the amount of ink supplied according to the pattern of the printing plate in the range corresponding to the ink fountain key is the pattern area ratio of the printing plate in the range corresponding to the ink fountain key, or the printing plate in the range corresponding to the ink fountain key. The ink supply method is characterized in that the ink fountain key is opened according to the pattern. A plurality of ink fountain keys are provided, and the amount of ink supplied to the ink fountain roller from within the ink fountain is adjusted by adjusting the opening amount of these ink fountain keys. In the ink supply device that forms an ink film thickness distribution according to the pattern of the printing plate of the next printing job on the ink roller group in the ink supply device that supplies to the printing plate via
Ink corresponding to the printing plate image of the previous printing job in the range corresponding to each ink fountain key from the index value indicating the amount of ink supplied according to the printing plate image of the next printing job in the range corresponding to each ink fountain key Index value difference calculating means for obtaining a value obtained by subtracting the index value indicating the supply amount of each ink fountain key as an index value difference;
Counting means for counting the number of ink fountain keys whose index value difference of the ink fountain key determined by the index value difference calculating means is not less than a predetermined value in the positive direction;
When the number of ink fountain keys counted by the counting means is equal to or greater than a predetermined number, the opening amount of each ink fountain key is set to an opening amount corresponding to the index value difference of each ink fountain key. When,
The ink call roller is called a predetermined number of times in a state where the opening amount of each ink fountain key is set to the opening amount corresponding to the index value difference of each ink fountain key by the opening amount setting means when the removing is not performed, and the ink An ink film thickness distribution superimposing means for directly superimposing the ink film thickness distribution according to the index value difference of each ink fountain key on the ink film thickness distribution according to the pattern of the printing plate of the previous print job formed on the roller group; An ink supply device comprising: In the ink supply device according to claim 10,
The ink film thickness distribution superimposing means is
After directly superimposing the ink film thickness distribution according to the index value difference of each ink fountain key on the ink film thickness distribution according to the pattern of the printing plate of the previous print job formed on the ink roller group, each of the ink fountain keys An ink supply device characterized in that the opening amount is set to a value according to the pattern of the printing plate of the next print job. In the ink supply device according to claim 10 or 11,
When the number of ink fountain keys counted by the counting means is not equal to or greater than a predetermined number, a roller group dividing means with removing that divides the ink roller group into a plurality of roller small groups, and
Ink removing means for scraping and removing the ink in a part of the plurality of roller subgroups divided by the roller group dividing means at the time of removal with an ink scraping member. Characteristic ink supply device. In the ink supply device according to claim 12,
A roller group connecting means for connecting the plurality of divided roller small groups and returning them to one ink roller group after the ink in the partial roller small groups is removed by the ink removing means;
An opening amount setting means at the start of printing for setting the opening amount of each ink fountain key to a value corresponding to the pattern of the printing plate of the next print job;
In a state where the ink roller group is returned to one ink roller group by the roller group connecting means, the opening amount of each ink fountain key is changed to the pattern of the printing plate of the next printing job by the opening amount setting means at the start of printing. The ink call roller is called a predetermined number of times in a state set to a corresponding value, and the ink film thickness distribution corresponding to the printing plate pattern of the next print job is applied to the ink roller group returned to the one. And an ink film thickness distribution forming means. In the ink supply device according to claim 11,
A plurality of ink roller groups in which the ink film thickness distribution corresponding to the index value difference of each ink fountain key is directly superimposed on the ink film thickness distribution corresponding to the pattern of the printing plate of the previous print job by the ink film thickness distribution superimposing means. Roller group dividing means at the start of printing for dividing into roller small groups;
After being divided by the roller group dividing means at the start of printing or before being divided, at least the most downstream roller small group of the plurality of roller small groups and a printing plate to be used in the next print job are mounted. Wearing means for bringing the plate cylinder into a worn state;
The plate cylinder and the roller small group which are divided by the roller group dividing means at the start of printing and put in the wearing state are rotated by a predetermined number of rotations, and the ink in the roller small group is attached to the plate cylinder. An ink supply device comprising: an ink supply means for supplying to the printing plate. The ink supply device according to claim 13,
A roller group dividing unit at the start of printing, wherein the ink film thickness distribution forming unit divides the ink roller group in which the ink film thickness distribution corresponding to the pattern of the printing plate of the next print job is formed into a plurality of small roller groups; ,
After being divided by the roller group dividing means at the start of printing or before being divided, at least the most downstream roller small group of the plurality of roller small groups and a printing plate to be used in the next print job are mounted. Wearing means for bringing the plate cylinder into a worn state;
The plate cylinder and the roller small group which are divided by the roller group dividing means at the start of printing and put in the wearing state are rotated by a predetermined number of rotations, and the ink in the roller small group is attached to the plate cylinder. An ink supply device comprising: an ink supply means for supplying to the printing plate. The ink supply device according to claim 14 or 15,
The wearing means is
After being divided by the roller group dividing means at the start of printing or before being divided, at least the most downstream roller small group of the plurality of roller small groups and a printing plate to be used in the next print job are mounted. The plate cylinder being put on, and the rubber cylinder for transferring the ink supplied to the printing plate mounted on the plate cylinder to the printing body,
The ink supply means
The plate cylinder, the roller small group, and the rubber cylinder, which are divided by the roller group dividing means at the start of printing and are in the wearing state by the attaching means, are rotated by a predetermined number of revolutions, and the ink in the roller small group is transferred to the plate An ink supply device for supplying to a printing plate mounted on a cylinder and the rubber cylinder. In the ink supply device according to any one of claims 14 to 16,
After the ink is supplied by the ink supply means, the plurality of divided roller small groups are connected to return to one ink roller group, and the next printing plate mounted on the plate cylinder is used. An ink supply apparatus comprising: a printing start unit that starts printing of a print job. In the ink supply device according to any one of claims 10 to 17,
The index value indicating the amount of ink supplied according to the pattern of the printing plate in the range corresponding to the ink fountain key is the pattern area ratio of the printing plate in the range corresponding to the ink fountain key, or the printing plate in the range corresponding to the ink fountain key. The ink supply device is characterized in that the ink fountain key opens according to the pattern.

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