JP4669500B2 - Control device and control method for printing press - Google Patents

Description

  The present invention relates to a control device and control method for a printing press that controls the operation of the printing press based on print data.

In a newspaper rotary press that performs newspaper printing, patterns for four pages are printed on both sides of the web in the width direction of a printing web (web) that is continuous paper.
On the other hand, a printing plate mounted on a plate cylinder of a newspaper rotary press is generally produced with a size corresponding to two pages of a newspaper page. When newspaper printing is performed by a newspaper rotary press, as shown in FIG. In addition, printing is performed in a state where the two printing plates 102A and 102B are attached to the plate cylinder 101 so as to be juxtaposed at a predetermined interval L in the width direction of the web.

In general, a printing plate used in an offset printing machine such as a newspaper rotary press is manufactured (plate making) by, for example, a CTP (Computer-To-Plate) system or a CTF (Computer-To-Film) system.
For example, in the case of a CTP system, a printing latent image is directly drawn on a PS plate based on image data of a printing pattern, so that a printing plate is made as it is from the plate making data.

  In such an offset printing press, plate making data used when making a printing plate is acquired, and automatic adjustment of the ink supply amount of the printing press or automatic adjustment of the cutting register is performed based on information included in the acquired plate making data. Techniques for performing various controls such as simple plate inspection have been proposed and put into practical use (see, for example, Patent Document 1). By controlling the printing machine based on the plate making data, it is possible to reduce the waste paper and improve the printing quality.

By the way, when controlling the printing press based on the plate making data, the position information (coordinate information) such as the position and scale of the image data included in the plate making data and the position information of the printed pattern actually printed by the printing machine. Need to match.
That is, when the position and scale of the image data and the position and scale of the actual printed picture do not match, the accuracy of the control such as the registration of the ink supply amount and the cutting position described above is lowered.

For example, when the ink supply amount is automatically adjusted based on the plate making data and the color tone information obtained from the actually printed printing paper, if the position of the image data does not match the position of the actual print pattern, Since the ink supply amount is automatically adjusted using a color tone of a portion different from the actual printed pattern as a target value, the color tone quality of the printed pattern actually printed is deteriorated.
Therefore, for example, in the technique disclosed in Patent Document 2, when simple plate inspection is performed based on plate making data, image data of plate making data is used as a reference image and image information of an actual printing sheet (image to be inspected) acquired by a line sensor. Based on the above, the positional deviation amount on the x and y coordinates between the reference image and the non-inspected image is calculated by the normalized correlation method, and the position of the inspected image is calculated based on the calculated positional deviation amount (Δx, Δy). A technique for correcting the deviation has been proposed.
Japanese Patent No. 3790490 Japanese Patent Laid-Open No. 2007-8058

However, even when the positional deviation correction technique disclosed in Patent Document 2 is used, automatic control of the printing press is performed due to a mismatch in the positional relationship between the image data included in the plate-making data and the actually printed print pattern. Such accuracy may be reduced, resulting in a decrease in the quality of printed matter and an increase in waste paper.
Therefore, the present inventors have conducted intensive research on the cause of the decrease in accuracy in controlling the printing press as described above, and found the cause.

Hereinafter, an example in which a mismatch occurs in the positional relationship between the image data included in the plate-making data and the printed pattern that is actually printed will be described.
In printed materials such as newspapers, it is desired to form a more appealing paper surface. In recent years, as shown in FIG. 9, a bellows fold is formed on a printing paper printed on a newspaper rotary press [FIG. 9 (A)]. Alternatively, a technique for forming a double-page spread (for 8 pages when both sides are combined) by performing folding folding [FIG. 9B] has been put into practical use.

In the case of printing spread pages for four pages in this way, as shown in FIG. 10, the interval between the two printing plates 103A and 103B is avoided in order to prevent the center portion of the spread pages from becoming a blank portion. It is necessary to make L ′ substantially zero.
Therefore, the printing plate 103A is mounted on the plate cylinder 101 at a position in the width direction that is displaced by ΔXa from the normal mounting position indicated by a two-dot chain line in the figure, and the printing plate 103B is ΔXb from the normal mounting position. It may be mounted on the plate cylinder 101 at a position in the width direction that has been displaced by a certain amount.

In this way, when the mounting position of the printing plate is mounted at a position different from the normal mounting position, a deviation occurs in the positional relationship between the image data included in the plate-making data and the printing pattern that is actually printed, The accuracy of automatic control of the printing press based on the image data is greatly reduced.
Another example in which there is a discrepancy in the positional relationship between the image data included in the plate-making data and the printed pattern that is actually printed will be described.

In a plate making apparatus such as a CTP system, when the scale of image data included in plate making data is different from the scale of image data included in the plate making data because the scale (reduction ratio) of the image data included in the plate making data is changed. There is.
Even in such a case, the positional relationship between the image data and the printed pattern to be actually printed is shifted, and the accuracy of automatic control of the printing press based on the image data is greatly reduced.

In the future, as one means for providing high-value-added printed matter, it is conceivable that the demand for the above-described special printing method will increase.
The present invention was devised in view of such problems, and even if there is an error in the positional relationship between the image data included in the print data such as plate-making data and the actual print pattern, the quality of the printed matter is reduced. It is an object of the present invention to provide a control device and a control method for a printing press that can prevent an increase in paper and paper waste.

In order to achieve the above object, a control device for a printing press according to the present invention (Claim 1) is a control device for a printing press that performs printing by mounting a printing plate on a plate cylinder, and includes printing that includes image data. Print data acquisition means for acquiring data, correction information acquisition means for acquiring correction information regarding the position of the image data for the image data included in the print data acquired by the print data acquisition means, and the print data An image data correction unit that corrects the image data based on the included image data and the correction information, and the printing machine that is based on the print data that includes the image data corrected by the image data correction unit. a printer control means for controlling, and has a, the correction information, as the position correction information of the image data corresponding to the axial direction of the plate cylinder, the upper Symbol printing plate It is characterized in that it comprises a displacement amount between a preset reference position and the axial position of the plate cylinder, which is attached to the serial plate cylinder.

The print data is data that is a combination of image data in a known image format such as TIFF, EPS, or PDF and printing related information (for example, job information or page number) of the image data. It is preferable that the plate-making data is used for plate-making of a printing plate mounted on the plate cylinder.
However, the print data does not necessarily include printing-related information, and the printing plate image data obtained by actually scanning the printing plate or the like may be used as the printing data.

Further, the correction information, to include the position correction information of the image data corresponding to the axial direction of the plate cylinder to be conveyed to the printing machine (i.e., the width direction of the printing paper), the plate making process such as CTP system, surface Appropriate correction of image data based on axial position correction information of the plate cylinder, even when the image data and the printed pattern to be printed are different in the width direction, such as by shifting the attachment position in the width direction can do.

Further, the printing plate mounting position detection sensor for detecting a displacement amount between an axial position of the plate cylinder on which the printing plate is mounted with respect to the plate cylinder and a preset reference position, and the correction information preferably contains the amount of displacement detected by the plate mounting position detecting sensor (claim 2).
In this way, for example, even when panoramic printing or the like is performed, the image data is appropriately corrected based on the width direction position correction information even when the mounting position of the plate on the plate cylinder is different from the reference position. can do.

Further, the correction information preferably includes a scale correction information of the image data (claim 3).
In this way, even when the scale of the printed pattern to be actually printed differs from that of the image data, the image data can be appropriately corrected based on the scale correction information.

The printing machine includes a color sensor for detecting color information of printing paper printed by the printing machine, and ink supplied to the plate cylinder for each ink supply unit width divided in the axial direction of the plate cylinder. An ink supply amount adjusting means for adjusting the amount of ink, and the printing control means controls the ink supply amount adjusting means based on the detection result of the color tone sensor and the corrected image data. It is preferable to have a supply amount control means (claim 4 ).
In this way, it is possible to accurately adjust the ink supply amount for each ink supply unit width based on the corrected image data, and it is possible to improve the printing quality and reduce waste paper.

The printing machine further includes ink supply amount adjusting means for adjusting the amount of ink supplied to the plate cylinder for each ink supply unit width divided into a plurality of parts in the axial direction of the plate cylinder, and the printing control means. Has an ink supply amount preset means for presetting the ink supply amount supplied from the ink supply amount adjusting means based on the image data corrected by the image data correction means prior to the start of printing. (Claim 5 ).
In this way, the ink supply amount for each ink supply unit width can be accurately preset based on the corrected image data, and the time (or through time) from the start of printing until the desired color tone is obtained. The number of waste paper can be reduced.

The printing machine further includes ink supply amount adjusting means for adjusting the amount of ink supplied to the plate cylinder for each ink supply unit width divided into a plurality of parts in the axial direction of the plate cylinder, and the printing control means. Is based on the image data corrected by the image data correction means, the ink preliminary supply amount calculation means for calculating the amount of ink to be supplied to the plate cylinder in advance, and prior to the start of printing, the ink supply amount adjustment means preferably it has a preliminary supplying ink reserve supply quantity control means of the ink only to the plate cylinder an ink amount set by the ink pre-supply quantity setting means (claim 6).
In this way, based on the corrected image data, the preliminary ink supply amount to be supplied to the plate cylinder prior to printing can be obtained with high accuracy, and appropriate ink is preliminarily supplied to the plate cylinder. It is possible to reduce the time (or the number of passes) until a print sheet having a desired color tone is obtained, and to reduce waste paper.

In addition, a mark detection sensor for detecting a cutting register mark of the printing paper printed by the printing machine, and the printing paper in the width direction at a timing according to the detection information of the mark detection sensor and the traveling speed of the printing paper. A cutting cylinder for cutting; and a detection range adjusting unit that adjusts a detection range of the mark detection sensor based on the corrected image data. The print control unit is detected by the mark detection sensor. preferably it has a conveying path adjusting means for adjusting the length of the conveying path of the printing sheet based on the traveling speed of the detection timing and the printing paper of the cutting register mark (claim 7).
In this way, since the detection range of the mark detection sensor is adjusted based on the corrected image data, even if the positional relationship between the image data before correction and the printed pattern actually printed is different, Therefore, it is possible to reliably prevent a shift in the cutting position and a paper jam in the printing press due to the non-detection of the cutting registration mark.

Further, the printing machine includes: a color tone sensor that detects color tone information of printing paper printed by the printing machine; and a dampening water supply amount adjusting unit that adjusts the amount of dampening water supplied to the plate cylinder. The printing control means further includes a dampening water supply amount control means for controlling the dampening water supply amount adjustment means based on the detection result of the color tone sensor and the corrected image data. (Claim 8 ).
In this way, based on the corrected image data and the color tone information of the printing paper, for example, the background stain of the printing paper can be detected with high accuracy, and the supply amount of dampening water can be adjusted with high accuracy. And the background smudge of the printing paper can be surely reduced.

Further, the printing machine further includes a color tone sensor that detects color tone information of the printing paper printed by the printing machine, and the print control unit is configured to detect the detection result of the color tone sensor and the corrected image data. preferably it has a simple plate inspection means for detecting an error of the mounted plate to the plate cylinder based (claim 9).
In this way, based on the corrected image data and the color tone information of the printing paper, it is possible to detect early mistakes in the printing plate mounted on the plate cylinder, and to reduce waste paper. Can do.

A printing machine control method according to the present invention (claim 10) is a printing machine control method for performing printing by mounting a printing plate on a plate cylinder, and obtains print data including image data of a printed picture. A print data acquisition step, a correction information acquisition step for acquiring correction information regarding the position of the image data for the image data included in the print data acquired in the print data acquisition step, and the image included in the print data An image data correction step for correcting the image data based on the data and the correction information, and a printing machine for controlling the printing machine based on the print data including the image data corrected in the image data correction step a control step, the said correction information, as the position correction information of the image data corresponding to the axial direction of the plate cylinder, the Plate is characterized in that it comprises a displacement amount between a preset reference position and the axial position of the plate cylinder, which is attached to the plate cylinder.
The print data may be plate making data used for plate making of a printing plate mounted on a plate cylinder of a printing press, and may include various data in addition to image data. Moreover, what acquired the image data of a printing plate by actually scanning a printing plate etc. may be used as printing data.

Also, having a printing plate lock position detection step of the printing plate to detect the displacement amount between the pre-set reference position and the axial position of the plate cylinder, which is attached to the plate cylinder, the correction information preferably includes the amount of displacement detected in the plate mounting position detecting step (claim 11).
Further, the correction information preferably includes a scale correction information of the image data (claim 12).

Further, the printing press control step includes a printing color tone detection step for detecting color tone information of the printing paper printed by the printing press, and the plate cylinder based on the detected color tone information and the corrected image data. it preferably has an ink supply amount control step of adjusting the amount of ink supplied to the plate cylinder in the axial direction for each of a plurality divided ink supplying unit width, (claim 13).

In the printing press control step, the amount of ink supplied to the plate cylinder is determined for each ink supply unit width divided in the axial direction of the plate cylinder based on the corrected image data before starting printing. preferably it has an ink supply amount preset step of presetting (claim 14).
Further, the printing press control step includes an ink preliminary supply step of preliminary supplying ink to the plate cylinder by an ink preliminary supply amount set based on the corrected image data prior to the start of printing. (Claim 15 ).

The printing press control step includes a cutting mark detection step of detecting a cutting registration mark of the printing paper printed by the printing press with a mark detection sensor whose detection position is adjusted based on the corrected image data. A cutting register adjusting step for adjusting the length of the transport path of the printing paper based on the detected timing of detecting the cutting registration mark and the running speed of the printing paper, and a timing according to the running speed of the printing paper in preferably has the and a web cutting step of cutting the printing paper in the width direction (claim 16).

Further, the printing press control step includes a printing color detection step for detecting color tone information of printing paper printed by the printing press, and the plate cylinder based on the detected color tone information and the corrected image data. It is preferable to include a dampening water supply amount control step of adjusting the amount of dampening water to be supplied (claim 17 ).
Further, the printing press control step includes a printing color detection step for detecting color tone information of printing paper printed by the printing press, and the plate cylinder based on the detected color tone information and the corrected image data. It is preferable to have a simple plate inspection step for detecting an error of the mounted printing plate (claim 18 ).

  According to the control device and control method for a printing press of the present invention, correction information regarding the position of image data included in plate-making data is acquired, and the image data is corrected based on the correction information, so that printing is actually performed. It is possible to eliminate or reduce the mismatch in the positional relationship between the printed pattern and the image data included in the plate making data. By controlling the printing press based on the corrected image data, various control elements of the printing press can be controlled with high accuracy, and the print quality can be improved.

  Thus, for example, when a special printing method such as panoramic printing is used, or when the scale of the image data included in the plate-making data and the pattern to be actually printed is different, the printing machine is appropriately controlled. Can do.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, the present invention is applied to a newspaper offset rotary printing press (newspaper rotary press) that performs newspaper printing with a plurality of printing presses.
1 to 7 are all for explaining a control device and a control method of a printing press according to an embodiment of the present invention, and FIG. 1 is a functional block diagram showing a functional configuration of the control device, 2 is a block diagram showing a schematic configuration of a printing factory having a newspaper rotary press, FIG. 3 is a schematic diagram showing a schematic configuration of a newspaper rotary press, and FIG. 4 is a diagram schematically showing a configuration of a folding section. 5 is a diagram schematically illustrating the mounting position of the printing plate to be mounted on the plate cylinder in a normal state, FIG. 6 is a diagram schematically illustrating the mounting position of the printing plate to be mounted on the plate cylinder for panoramic printing, and FIG. It is a flowchart which shows the control procedure concerning a control apparatus.

(Overall schematic configuration)
As shown in FIG. 2, a factory that performs newspaper printing includes a plate making data server 20, a CTP system 21, a printing press operation terminal (hereinafter referred to as a printing press OT) 30, a printing unit control device (printing press control means) 40, and a newspaper. A rotary press (printing machine) 50 is included.
In the plate making data server 20, for example, plate making data supplied from a not-shown editing center (usually a newspaper company's head office or the like) for editing newspaper pages via a communication network is stored in units of pages.

In this embodiment, the plate-making data is configured to correspond to the print data of the present invention. However, for example, the print pattern such as halftone dot area ratio data of the print pattern obtained by scanning the printing plate. Any data may be used as print data as long as it includes image data.
The plate making data is data for making a printing plate (hereinafter simply referred to as a printing plate) for each paper surface of a newspaper, and image data of a picture of a newspaper to be printed and information related to the paper surface ( Print job name, page information, print unit mounting position information, number of copies, special remarks, image data scale information). Hereinafter, information related to the page is referred to as job information.

Among the pieces of information included in the job information, particularly, the scale information of the image data is scale correction information used when the printing unit control device 40 corrects the image data as will be described later.
The scale information is information relating to the ratio of the size relationship between the image of the newspaper printed on the newspaper (that is, the image drawn on the printing plate, also referred to as the printed pattern) and the image data.

The plate making data corresponding to each page stored in the plate making data server 20 is transmitted to the CTP system 21 and the printing machine OT30.
In the CTP system 21, imposition is performed based on the plate information included in the job information among the plate-making data for each page, and the plate is made using the impositioned data. Here, two pages are imposed on one printing plate, and this imposition is performed based on the printing plate information included in the job information.

Note that the plate made by the CTP system 21 is conveyed to the newspaper rotary press 50 by an operator or the like, and is attached to the plate cylinder of the newspaper rotary press 50, as will be described later, and used for printing on the newspaper. ing.
The printing press OT30 includes a computer, a display device, and an input device, and can control the entire newspaper rotary press 50 via the printing unit control device 40.

  The printing unit control device 40 is also configured by a computer, and is configured to be able to control the control objects (control elements) respectively provided in the printing units T1 to T5 (see FIG. 3) of the newspaper rotary press 50. Yes. Note that the printing press OT30 and the printing unit control device 40 are connected to each other so that signals can be transmitted and received by communication. Here, the printing unit control device 40 is an integrated control device, but the printing unit control device 40 may be provided for each of the printing units T1 to T5.

(Schematic configuration of a newspaper press)
Hereinafter, a schematic configuration of the newspaper rotary press 50 will be described. As shown in FIG. 3, the newspaper rotary press 50 includes a plurality of printing units (tower units) T <b> 1 to T <b> 5, a web path unit 4, and a triangular plate 6 at the entrance from the upstream side in the running direction of the web W as printing paper. Are provided in this order.

Each of the tower units T1 to T5 includes a sheet feeding unit 1 with a web roller (winding paper) 1a, an infeed unit 2, and a printing unit 3 having an appropriate number of plate cylinders and blanket cylinders on the front and back sides. Are provided in this order.
Here, the tower units T2 to T4 are each provided with two plate cylinders and blanket cylinders on the front and back sides, and the tower units T1 and T5 are capable of two-color printing on both the front and back sides. On the other hand, four plate cylinders and blanket cylinders are respectively installed on the front and back sides of the tower units T1 and T5 at both ends, and the tower units T1 and T5 can print four colors on both the front and back sides.

In addition, the color tone sensor which acquires the color tone information of the front and back both surfaces of the web W printed by each tower unit T1-T5 over the full width of the web W in the downstream side from the printing part 3 of each tower unit T1-T5. The line sensor (see FIG. 1) 54 is provided, and the detection result of the color tone sensor 54 is transmitted to the printing unit controller.
The line sensor 54 determines the density of reflected light of each of the infrared light (IR), red light (R), green light (G), and blue light (B) of the printed pattern printed on the web W. It consists of an IRGB densitometer that detects the entire direction.

  However, the color tone sensor is not necessarily the IRGB densitometer that detects the reflected light of the four colors. In particular, in a printing unit that performs printing with four or less colors such as the tower units T2 to T4, the reflection of (IR), (R), (G), and (B) according to the ink color to be printed. You may comprise so that the density | concentration of the reflected light (For example, only two colors of IR and B etc.) abbreviate | omitted suitably among light may be detected. Moreover, you may use the spectral reflectance meter which measures a spectral reflectance instead of a densitometer as a color tone sensor.

  The web path unit 4 includes a web path route adjustment mechanism 51 (see FIG. 1) that adjusts the length of the web path route by a compensator roller or the like as a control element. The web path unit 4 is caused to travel in various combinations by the adjustment mechanism. A printed matter (in this case, a newspaper) can be formed. In the case of a newspaper offset rotary press, the web W is usually divided in the width direction by a slitter (not shown) in the infeed unit 2 to form a more complicated web path route 4.

  Further, as shown in FIG. 4, the web path route 4 is overlapped and collated with a predetermined web W in a predetermined combination, enters the folding portion 5 from the triangular plate 6, and is vertically folded (folded along the traveling direction) by the triangular plate 6. ), And horizontally folded (folded with a crease in the web width direction) by a folding cylinder (also called a tailing cylinder) 7 and a cutting cylinder 8 and cut by a predetermined length, and the folding roller 9 Thus, after the crease is pressurized and creased, it is discharged in order through the impeller 10 and the like. In FIG. 4, the web path route 4 is expressed in a simplified manner, but actually, a larger number of webs W are transported and superposed.

  In addition, it has a mark detection sensor 55 (see FIG. 1) for detecting a cutting register mark printed on the web W being conveyed, and the detection result of the mark detection sensor 55 is transmitted to the printing unit control device 40. It is like that. Note that the cutting register mark is included in the image data.

(Explanation about printing plate and plate cylinder)
Next, the configuration of the portion where the printing plate made by the CTP system 21 is mounted on the plate cylinder will be described. Here, the structure which mounts the printing plate corresponding to each of the plate cylinder 11 and the plate cylinder 12 in FIG. 3 will be described.
First, the plate cylinder 11 will be described. As shown in FIG. 5, the plate cylinder 11 is divided into a left plate cylinder 11 </ b> A and a right plate cylinder 11 </ b> B at the center of the plate cylinder 11 in the axial direction (that is, the width direction of the web W). A gap G is formed in the part. The plate cylinder 11 is a so-called division cylinder. In the plate cylinder 11, two printing plates 13A and 13B are mounted on the left plate cylinder 11A and the right plate cylinder 11B, respectively.

In the plate cylinder 11, in order to make it easy to register with other printing colors of the same printing unit 3, mounting positions (reference positions BPL, BPR) of the reference printing plate are defined. Registering members corresponding to the reference positions BPL and BPR are provided at printing plate end mounting portions (not shown) provided in the left printing cylinder 11A and the right printing cylinder 11B, respectively.
That is, when two printing plates 13A and 13B corresponding to the reference positions BPL and BPR appropriately are mounted on the left plate cylinder 11A and the right plate cylinder 11B, the pages A to D on the newspaper are arranged in the web width direction. It comes to be parallel to. In this case, an appropriate gap D is formed between the two printing plates 13A and 13B as a “cutting margin” when cutting by the slitter as described above.

In FIG. 5, a two-dot chain line indicates an ink supply unit width 16A divided into a plurality of portions in the axial direction of the plate cylinder, and each ink supply is performed by a known ink supply amount adjusting mechanism (see FIG. 1) 52. The supply amount of ink supplied to the plate cylinder 11 is adjustable for each unit width.
Further, the printing unit 3 is provided with a known dampening water supply amount adjusting mechanism (see FIG. 1) 53 that adjusts the supply amount of dampening water supplied to the plate cylinder 11 on each side.

Next, the plate cylinder 12 will be described. Here, panorama printing for forming a four-page spread paper surface is performed in the tower unit T1. An operator can obtain whether or not panoramic printing is performed from special information included in job information or a document attached to a printing plate.
As shown in FIG. 6, the plate cylinder 12 is divided into a left plate cylinder 12 </ b> A and a right plate cylinder 12 </ b> B at the central portion in the axial direction (the width direction of the web W) of the plate cylinder 12, similarly to the plate cylinder 11. A gap G is formed at the center of the plate cylinder 12.

The plate cylinder 12 is mounted with two printing plates 14A and 14B in the web width direction. However, the mounting position at which the two printing plates 14A and 14B are mounted on the plate cylinder is different in the plate cylinder 12 compared to the case of the plate cylinder 11.
That is, the left printing plate 14A is mounted at a position displaced by ΔXA to the right from the reference position BPL, and the right printing plate 14B is mounted at a position displaced by ΔXB to the right from the reference position BPR.

The displacement amounts ΔXA and ΔXB of the left and right printing plates 14A and 14B are set to satisfy (ΔXA> ΔXB).
The mounting position of the printing plate will be described. In the plate cylinder 12, since it is necessary to print four pages of facing paper, the boundary between the left and right printing plates is located at the center of the printed pattern. Therefore, in order to prevent a blank portion from occurring in the central portion of the printed pattern, it is necessary to make the distance D ′ between the left and right printing plates 14A and 14B as small as possible.

On the other hand, the plate cylinder 12 is divided into left and right plate cylinders 12A and 12B. When the end of the printing plate is located in the gap G of the plate cylinder 12, an appropriate printing pressure (plate) Contact pressure between the cylinder and the blanket cylinder) is not obtained, and printing defects may occur, and deformation of the printing plates 14A and 14B may occur.
Therefore, when performing panoramic printing, the left and right printing plates 14A and 14B are displaced to one end side (here, the right side) of the printing plate 12, and the displacement amount of the other printing plate 14A is set to be the same. By making it larger than the displacement amount of the printing plate 14B on one side, it is mounted on the plate cylinder 12 so that the distance D 'between the left and right printing plates 14A, 14B becomes substantially zero.

The displacement amounts (deviation amounts) ΔXA and ΔXB of the mounting positions of the left and right printing plates 14A and 14B with respect to the reference positions BPL and BPR are detected by the printing plate mounting position detection sensor 56, respectively. The detection information of the printing plate mounting position detection sensor 56 is transmitted to the printing unit control device 40 as correction information related to the position of the image data.
6 indicates the ink supply unit width 16B divided into a plurality of parts in the axial direction of the plate cylinder.

(Control system configuration)
Next, the configuration of the control system will be described. As shown in FIG. 1, the printing press OT30 and the printing unit control device 40 are connected so as to communicate with each other.
Further, each control element or sensor of the printing unit control device 40 and the newspaper rotary press 50 is also electrically connected so as to be able to communicate with each other.

  The printing press OT30 has a function of controlling the operation of the newspaper rotary press 50 via the printing unit control device 40, and constantly transmits information such as the operation speed of the newspaper rotary press 50 to the printing unit control device 40. It is like that. Further, it has a function as print data acquisition means for transmitting plate making data received from the plate making data server 20 to the printing unit control device 40.

  The printing unit controller 40 includes, as functional elements, a correction information acquisition unit (correction information acquisition unit) 41, an image data correction unit (image data correction unit) 42, an ink supply amount control unit (ink supply amount control unit) 43, an ink Supply amount preset section (ink supply amount preset means) 44, ink preliminary supply amount calculation section (ink preliminary supply amount calculation means, ink preliminary supply amount control means) 45, transport path control section 46, mark detection range adjustment section (detection range) An adjustment unit) 47, a dampening water supply amount control unit (dampening water supply amount control unit) 48, and a simple plate inspection unit (simple plate inspection unit) 49. Here, the ink supply amount control unit 43, the ink supply amount preset unit 44, the ink preliminary supply amount calculation unit 45, the transport path control unit 46, the mark detection range adjustment unit 47, the dampening water supply amount control unit 48, and the simple plate inspection. The unit 49 corresponds to a printing press control unit. Note that each functional element of the printing unit control device 40 may be included in the printing press OT30, or may be shared by the printing press OT and the printing unit control device 40.

  On the other hand, as described above, the newspaper rotary press 50 includes the web path route adjustment mechanism (conveyance route adjustment means) 51, the ink supply amount adjustment mechanism (ink supply amount adjustment means) 52, and the dampening water supply amount control unit (dampening water supply). (Quantity control means) 53, line sensor (color tone sensor) 54, mark detection sensor 55 and printing plate mounting position detection sensor 56.

(Image data correction)
The correction information acquisition unit 41 acquires the scale information included in the job information of the plate making data as the scale correction information of the image data, and the displacement amount ΔXA of the printing plate mounting position input from the printing plate mounting position detection sensor 56. , ΔXB are acquired as position correction information of the image data.
The image data correction unit 42 corrects the image data included in the plate making data based on the correction information acquired by the correction information acquisition unit 41.
Specifically, first, based on the scale correction information, the image data is subjected to enlargement correction or reduction correction (referred to as scale correction) so that the actual size of the image data becomes equal to the size of the printed pattern to be actually printed. To do.

Secondly, based on the position correction information, the corrected image data is obtained by correcting the position corresponding to the axial direction of the plate cylinder of the scale-corrected image data.
For example, in the case of image data corresponding to the plate cylinder 12, the image data corresponding to the scale-corrected left printing plate 14A is corrected so that the entire image is shifted to the right by the displacement amount ΔXA. Yes. Then, the image data corresponding to the scale-corrected right printing plate 14B is corrected so that the entire image is shifted to the right side by the displacement amount ΔXB.

  Note that the correction of the image data may be performed on the image data in the plate unit, or may be performed on the image data in the page unit. A known method is used for the data format of the image data and the correction processing of the image data.

(Color control)
As described above, the ink supply amount adjusting mechanism 52 is configured to be able to adjust the amount of ink supplied to the plate cylinder for each ink supply unit width divided into a plurality in the axial direction of the plate cylinder.
As the ink supply amount adjusting mechanism 52, the amount of ink supplied to the plate cylinder is adjusted by adjusting the gap (ink key opening) between the ink key and the ink base roller divided into a plurality in the axial direction of the plate cylinder. The ink key type may be used, or a digital pump type in which ink is sprayed onto the ink source roller by a digital ink pump for each ink supply unit width. In the case of the ink key type, the width of each ink key is the ink supply unit width. In the case of the digital pump type, the effective discharge width of the ink nozzle (discharge width when reaching the ink base roller) can be used as the ink supply unit width.

The ink supply amount adjusting mechanism 52 is controlled by the ink supply amount control unit 43.
The ink supply amount control unit 43 sets a target value of color tone information (reflection density) detected from the line sensor 54 for each ink supply unit width based on the image data corrected by the image data correction unit 42, and sets the color tone. Based on the target value of the information and the detected value of the tone information of the printed pattern actually detected by the line sensor 54, the ink supply amount is adjusted so that the difference between the target value of the tone information and the detected value falls within a predetermined range. The ink supply amount for each ink supply unit width by the mechanism 52 is feedback-controlled.

(Ink supply preset)
The ink supply amount presetting unit 44 superimposes the image data and the ink supply unit width on the basis of the image data corrected by the image data correction unit 42, and the image line ratio (here, the ink supply unit width) for each ink supply unit width. The halftone dot area ratio in units of supply width is calculated.

  Then, based on the correspondence relationship between the image line ratio and the ink supply amount obtained in advance, the ink supply amount for each ink supply unit width of the ink supply amount adjusting mechanism 52 is preset after the ink preliminary supply described later is completed. It is like that. Here, the ink supply amount refers to the amount of ink that can be supplied from the ink supply amount adjustment mechanism 52 per unit time (that is, the ink supply amount per unit time of ink).

(Ink preliminary supply control)
The ink preliminary supply amount calculation unit 45 supplies in advance to the plate cylinder prior to the start of printing on the basis of the correspondence relationship between the image line ratio and the ink preliminary supply amount obtained in advance, and applies a predetermined ink film pressure on the surface of the plate cylinder. The preliminary ink supply amount for forming the ink is calculated. This ink preliminary supply amount calculation method is performed using a known method. Here, the preliminary ink supply amount means the absolute amount of ink supplied from the ink supply amount adjusting mechanism 52 to the plate cylinder.

  Further, the ink preliminary supply amount calculation unit 45 sets the ink supply amount of the ink supply amount adjustment mechanism 52 to a predetermined ink supply amount based on the calculated ink preliminary supply amount without passing the web W. The ink roller group (not shown) from the ink supply amount adjusting mechanism 52 to the plate cylinder is rotated so that the ink corresponding to the ink preliminary supply amount calculated from the ink supply amount adjusting mechanism 52 is supplied to the plate cylinder. The supply amount adjusting mechanism 52 is controlled.

(Cutting register control)
The mark detection range adjustment unit 47 acquires the position of the cutting registration mark printed on the web W (the axial position of the plate cylinder) based on the image data corrected by the image data correction unit 42, and the mark detection sensor 55. Is displaced in the axial direction of the plate cylinder to a position suitable for detection of the cutting registration mark, and the detection position of the mark detection sensor 55 is adjusted to be optimal.

The web path route adjustment mechanism 51 is configured by a known mechanism such as a position adjustment of a compensator roller or the like, and can change the length of the conveyance path of each web W that has passed through each tower unit T1 to T5. .
Then, the web path route adjustment mechanism 51 passes each tower unit T1 to T5 based on the detection timing of the cut register mark detected by the mark detection sensor 55 by the transport route control unit 46 and the traveling speed of the web W. The web path route adjusting mechanism 51 is controlled so as to adjust the length of the transport path of the web W.
Accordingly, the web W printed by each of the tower units T1 to T5 is superimposed at an accurate position, and the cutting cylinder 8 performs cutting at an appropriate position.

(Dampening water supply control)
The dampening water supply amount adjustment mechanism 53 is configured to adjust the amount of dampening water supplied to the plate cylinder, and the dampening water supply amount control unit 48 detects the detection result of the line sensor 54 and the image data correction unit. Based on the image data corrected in 42, the dampening water supply amount adjusting mechanism 53 is controlled.

More specifically, the dampening water supply amount control unit 48 compares the image data corrected by the image data correction unit 42 with the detection result of the line sensor 54 to determine whether or not the web W is soiled. It is configured to determine.
When it is determined that there is background stain based on the detection result of the line sensor 54, it is determined from the color tone of the background stain which ink color plate stain is caused, and the corresponding plate cylinder is dampened. The water supply is adjusted to increase.

Here, a predetermined upper limit value is set for the supply amount of the dampening water supplied by the dampening water supply amount adjusting mechanism 53.
With this configuration, measures to suppress the occurrence of ink smearing are taken, so even if the smudges that overlap multiple inks occur, it is possible to determine which color printing unit is in the dampening water supply state that causes background smearing. Since the determination and the dampening water supply amount are adjusted, the occurrence of soiling can be reliably prevented.

(Simple plate inspection control)
The simple plate inspection unit 49 detects an error of the printing plate mounted on the plate cylinder (wrong plate application) based on the detection result of the line sensor 54 and the image data corrected by the image data correction unit 42. It is configured as follows.
The simple plate inspection section 49 transmits a printing plate application error signal to the printing machine OT30 side when detecting a printing plate application error. The printing press OT30 is configured to stop the operation of the newspaper rotary press 50 when it receives a printing plate application error signal.

  More specifically, the simple plate inspection unit 49 sets the image of the image data corrected by the image data correction unit 42 as the reference image, and sets the image obtained from the detection result of the line sensor 54 as the inspection image. It has become. Then, the positional deviation of the gray level values [luminance value distribution f (x, y) on the xy plane on the printed surface] of each of the reference image and the image to be inspected is corrected by the normalized correlation method. If the degree of coincidence of the gray level values of the reference image corrected for deviation and the image to be inspected is equal to or less than a predetermined degree of coincidence, it is determined that the printing plate mounted on the plate cylinder is an error. .

(flowchart)
Since the control device for a printing press according to an embodiment of the present invention is configured as described above, printing is performed in the following procedure.
As shown in FIG. 7, first, in step S100, plate making data is transmitted from the plate making data server 20 to the printing unit control device 40 via the printing press OT30 (plate making data acquisition step, correction information acquisition step).

In step S110, the plate made by the CTP system 21 is mounted on each plate cylinder of the newspaper rotary press 50. Note that step S100 and step S110 may be performed before or after, or in parallel.
When a printing plate is loaded on each plate cylinder in step S110, in step S120, displacement amount (deviation amount) information from the reference position of the detected printing plate loading position is detected by the printing plate loading position detection sensor 56. Then, the detection information is input to the correction information acquisition unit 41 (press plate mounting position detection step, correction information acquisition step).

In step S130, the scale (scale) of the image data is corrected based on the scale correction information of the image data included in the job information of the plate making data obtained in step S100, and then the reference position obtained in step S120. The position of the image data whose scale has been corrected is corrected on the basis of the displacement amount information from (image data correction step).
Subsequently, in step S140, based on the image data corrected in step S130 and the correspondence relationship between the image line ratio and the ink preliminary supply amount obtained in advance, the preliminary ink to be preliminarily supplied before starting printing for each plate cylinder. A supply amount is calculated. Then, according to the calculated preliminary ink supply amount, preliminary ink is supplied to the plate cylinder, and a suitable ink film thickness is formed on the surface of the plate cylinder (ink preliminary supply step).

When the preliminary ink supply is completed in step S140, in step S150, each of the newspaper rotary press 50 is based on the image data corrected in step S130 and the correspondence relationship between the image line ratio and the ink supply amount obtained in advance. An ink supply amount to be supplied to the plate cylinder is preset for each ink supply unit width with respect to the plate cylinder (ink supply amount preset step).
When the ink preliminary supply step and the ink supply amount preset step are executed in steps S140 and S150, in step S160, the newspaper rotary press 50 is used to perform printing on the web W in the printing unit of each tower unit T1 to T5. The printing operation is started.

When the printing operation of the newspaper press 50 is started, in step S170, the color information of the web W printed in the printing unit 3 of each tower unit T1 to T5 is detected by the line sensor 54 of each tower unit T1 to T5. (Print color tone detection step).
In step S180, based on the color tone information detected in step S170 and the image data corrected in step S130, the plate mounted on the plate cylinder is applied to each plate cylinder of each tower unit T1 to T5. It is determined whether or not there is an error (simple plate inspection step).

If it is determined in step S180 that a printing plate is loaded incorrectly, the printing press OT30 stops the operation of the newspaper rotary press 50 in step S260.
Note that the position of the plate cylinder determined to be an error in applying the printing plate is displayed on the display device of the printing machine OT30, and the operator replaces the incorrect printing plate with an appropriate printing plate and starts the processing from step S100 again. To do.

If it is determined in step S180 that there is no printing plate application error, in step S190, the ink supply amount adjusting mechanism 52 causes the difference between the target value of the color tone information and the detected value of the line sensor 54 to be within a predetermined range. The ink supply amount for each ink supply unit width is adjusted by feedback control (ink supply amount control step).
In step S200, it is first determined whether or not the web W is soiled based on the detection value of the line sensor 54 and the image data corrected in step S130. When it is determined that there is a background stain, it is determined which ink color is the background stain, and the supply amount of dampening water supplied to the corresponding ink color plate cylinder is increased and adjusted ( Dampening water supply control step).

In addition, said step S190, S200 is performed simultaneously in parallel. Steps S190 and S200 are also performed in parallel with the processing from steps S210 to S240 described later.
In step S210, based on the detection value of the line sensor 54 and the image data corrected in step S130, the position of the mark detection sensor 55 is adjusted to a position suitable for the detection of the cut register mark.

In step S220, a cutting registration mark printed on the web W that has passed through each of the tower units T1 to T5 is detected (cutting mark detection step).
Subsequently, in step S230, the length of the conveyance path of each web W that has passed through each tower unit T1 to T5 is adjusted by the web path route adjusting mechanism 51 (cutting register adjusting step), and in step S240, the cutting register is adjusted. The web W overlapped in the upper web path route 4 is folded in the web width direction by the folding cylinder 7 and the cutting cylinder 8 and cut by a predetermined length, and further, the fold is pressed by the folding roller 9. A compromise is formed.

Next, in step S250, it is determined whether a print end condition is satisfied. The determination in step S250 is performed by the printing press OT30. For example, when a preset condition for ending printing such as reaching a desired number of copies is satisfied, the process proceeds to step S270, and the completion process of the newspaper rotary press 50 is performed. The printing is finished.
On the other hand, if the print end condition is not satisfied in step S250, the process returns to step S170, and the processes from step S170 to step S240 are repeated.

  In the present embodiment, the processes in steps S140, S150, S180 to S200, S210, and S230 correspond to a printing press control step.

  As described above, according to the control device and the control method of the printing press of the present invention, information on the tower unit T1 that performs panorama printing is included in the plate making data as job information, and a tower that performs panorama printing based on this information. As for the plate cylinder of the unit T1, the left and right printing plates 14A and 14B are mounted so as to be displaced toward one end of the plate cylinder 12. As a result, the printing plate is deformed when the end of the printing plate is positioned in the gap G portion of the central portion of the printing drum 12 which is the printing cylinder divided at the center, and the printing pressure of the portion during printing is changed. It is possible to avoid problems such as a decrease in color tone quality and a significant decrease in color quality.

  Further, the scale information of the image data included in the plate-making data and the displacement amounts ΔXA and ΔXB from the reference position BP of the mounting positions of the left and right printing plates 14A and 14B in the plate cylinder 12 for performing panoramic printing are detected, and the image data By correcting the image data based on this correction information, the discrepancy in the positional relationship between the printed pattern that is actually printed and the image data included in the plate-making data is eliminated or reduced. can do.

By controlling the printing press based on the corrected image data, the control functions 43 to 49 of the newspaper rotary press 50 can be executed with high accuracy, and the printing quality can be improved.
In particular, when the positional relationship between the image data before correction and the pattern that is actually printed is large in the width direction (axis direction of the plate cylinder), a large error occurs in the line drawing rate for each ink supply unit width. However, based on the image data corrected by the image data correction unit 42, the ink supply amount for each ink supply unit width is calculated by the ink supply amount control unit 43 by calculating the image line ratio for each ink supply unit width. Adjustment can be performed with high accuracy, and printing quality can be improved and waste paper can be reduced.

  Further, the ink supply amount for each ink supply unit width is accurately determined in the ink supply amount preset unit 44 by calculating the line drawing rate for each ink supply unit width based on the image data corrected in the image data correction unit 42. It is possible to preset well, the time (or the number of passes) from the start of printing until the web W having a desired color tone is obtained can be reduced, and loss of paper can be reduced. Further, the preliminary ink supply amount calculation unit 45 can accurately determine the preliminary ink supply amount to be supplied to the plate cylinder prior to printing. By supplying the appropriate ink to the plate cylinder in advance, a desired color tone can be obtained from the start of printing. It is possible to reduce the time (or the number of passes) until the web W is obtained, and to reduce the waste paper.

  Further, since the position of the mark detection sensor 55 is adjusted based on the image data corrected by the image data correction unit 42, the positional relationship between the image data before correction and the actually printed print pattern is the axial direction of the plate cylinder. Even when different from each other, it is possible to prevent the cutting register mark printed on the web W from deviating from the detection range of the mark detection sensor, and the misalignment of the cutting position due to the non-detection of the cutting register mark or the web of the newspaper rotary press 50. Occurrence of a paper jam or the like in the conveyance path can be reliably prevented.

Further, it is possible to detect the ground dirt of the web W with high accuracy based on the image data corrected by the image data correction unit 42, and the dampening water supply amount control unit 48 can accurately control the supply amount of dampening water. It is possible to adjust, and the occurrence of soiling of the web W can be reliably reduced.
In addition, if the amount of dampening water supplied is excessive, the ink and dampening water are over-emulsified, causing problems such as floating stains and roller stripping. However, an upper limit is set for the dampening water supply amount. Thus, the increase in the amount of dampening water is corrected, so that such a problem can be avoided.

In addition, based on the image data corrected by the image data correction unit 42, the simple plate inspection unit 49 can automatically and accurately detect an application error of the printing plate mounted on the plate cylinder. Can be detected accurately and quickly, and the amount of waste paper can be reduced.
In particular, since the image data correction unit 42 has already corrected the positional deviation of the image data, the simplified plate inspection unit 49 determines the amount of positional deviation on the x and y coordinates between the reference image and the non-inspected image by the normalized correlation method. Since the correction limit value can be set more strictly, it is possible to dramatically improve the accuracy of detecting a printing plate application error in the simple plate inspection section 49.

[Others]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiments, the newspaper rotary press that performs newspaper printing is described as an example of the printing press, but printing is also performed on a commercial offset rotary printing press or a sheet-fed printing press that performs printing on a sheet. The present invention can be suitably applied as a machine.

In the embodiment, the position correction information of the image data corresponding to the axial direction of the plate cylinder is obtained from the detection information of the printing plate mounting position detection sensor. The job information may include image data position correction information as special information, or may be input directly by an operator from an input device of the printing press OT.
In addition, for the control target of the printing press controlled based on the corrected image data, ink supply amount control, ink preliminary supply amount control, ink supply amount preset control, dampening water supply amount control, cutting register adjustment control and It is not limited to simple plate inspection, and can be omitted as appropriate. Alternatively, the present invention can be appropriately applied to control of other printing presses that preferably use the corrected image data.

For example, based on the corrected image data and the color tone detection result of the printed printing paper, it is detected that the printing paper has a serious defect, and the printing paper in which the defect is found becomes a product. You may comprise so that it may remove from a non-defective conveyance line.
Further, as described above, the correction information for the image data is not limited to the correction information for the position of the image data in the axial direction of the plate cylinder and the correction information for the scale of the image data. It may be configured to include information for correcting the position of the image data with respect to the direction (printing paper conveyance direction) and correct the image data based on the correction information.

  Further, all the position correction information of the image data of the position correction information of the image data such as the mounting position information in the axial direction of the plate cylinder of the printing plate may be included in the job information of the plate making data. In this way, for example, in the plate making process of the CTP system or the like, even if the position in the width direction of the printed pattern actually printed is different, such as the imposition position is displaced in the width direction, The image data can be appropriately corrected based on the axial position correction information of the plate cylinder.

FIG. 2 is a functional block diagram illustrating a functional configuration of the control device for explaining a control device for a printing press according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a schematic configuration of a printing factory having a newspaper rotary press for explaining a control device for a printing press according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram illustrating a schematic configuration of a newspaper rotary press for explaining a control device for a printing press according to an embodiment of the present invention. FIG. 3 is a diagram for schematically illustrating a configuration of a folding unit for explaining a control device for a printing press according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram for explaining a control device for a printing press according to an embodiment of the present invention and schematically showing a mounting position of a printing plate to be mounted on a plate cylinder in a normal state. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram schematically illustrating a mounting position of a printing plate to be mounted on a plate cylinder that performs panoramic printing, for explaining a control device for a printing press according to an embodiment of the present invention. It is a flowchart for demonstrating the control apparatus of the printing apparatus for demonstrating the control apparatus of the printing press which concerns on one Embodiment of this invention. FIG. 5 is a diagram for explaining the prior art and schematically showing a mounting position of a printing plate to be mounted on a plate cylinder in a normal state. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram schematically illustrating a printed material on which panoramic printing has been performed. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram schematically illustrating a mounting position of a printing plate to be mounted on a plate cylinder that performs panoramic printing, for explaining the problem of the present invention.

Explanation of symbols

1 Paper Feeding Unit 1a Web Roller (winding paper)
2 Infeed part 3 Printing part 4 Web path route 5 Folding part 6 Triangle plate 7 Folding cylinder 8 Cutting cylinder 9 Folding roller 10 Impeller 11, 12 Plate cylinder (divided cylinder)
11A, 12A Left plate cylinder 11B, 12B Right plate cylinder 13, 14 Printing plate 13A, 14A Left printing plate 13B, 14B Right printing plate 16A, 16B Ink supply unit width 20 Plate making data server 21 CTP system 30 Printing machine operation terminal (printing) Machine OT, print data acquisition means)
40 Printing Unit Control Device 41 Correction Information Acquisition Unit (Correction Information Acquisition Unit)
42 Image data correction unit (image data correction means)
43 Ink Supply Amount Control Unit (Ink Supply Amount Control Unit)
44 Ink supply preset (ink supply preset means)
45 Ink preliminary supply amount calculation section (ink preliminary supply amount calculation means)
46 Conveyance path control unit 47 Mark detection range adjustment unit (detection range adjustment means)
48 Dampening water supply control unit (Dampening water supply control means)
49 Simple plate inspection (Simple plate inspection means)
50 Newspaper press (printing machine)
51 Web path route adjustment mechanism (conveyance route adjustment means)
52 Ink supply amount forcing mechanism (ink supply amount adjustment means)
53 Dampening water supply adjustment mechanism (Dampening water supply adjustment means)
54 Line sensor (color sensor)
55 Mark detection sensor 56 Plate mounting position detection sensors T1 to T5 Tower unit (printing unit)
W Web (printing paper)

Claims (18)

A control device for a printing press that performs printing with a printing plate mounted on a plate cylinder,
Print data acquisition means for acquiring print data including image data of a print pattern;
Correction information acquisition means for acquiring correction information regarding the position of the image data for the image data included in the print data acquired by the print data acquisition means;
Image data correction means for correcting the image data based on the image data and the correction information included in the print data;
A printing press control means for controlling the printing press based on the print data including the image data corrected by the image data correction means, and
The correction information, as the position correction information of the image data corresponding to the axial direction of the plate cylinder, reference the upper Symbol plate is set in advance with the axial position of the plate cylinder, which is attached to the plate cylinder A control device for a printing press, comprising a displacement amount with respect to a position. A printing plate mounting position detection sensor for detecting a displacement amount between a position in the axial direction of the plate cylinder on which the printing plate is mounted on the plate cylinder and a preset reference position;
2. The control device for a printing press according to claim 1, wherein the correction information includes the displacement amount detected by the printing plate mounting position detection sensor. The printing press control apparatus according to claim 1, wherein the correction information includes scale correction information of the image data. The printing press
A color tone sensor for detecting color tone information of printing paper printed by the printing machine;
An ink supply amount adjusting means for adjusting the amount of ink supplied to the plate cylinder for each ink supply unit width divided in the axial direction of the plate cylinder;
The print control means includes
The ink supply amount control means for controlling the ink supply amount adjustment means based on the detection result of the color sensor and the corrected image data is provided. A control device for a printing press according to item 1. The printing press
The ink supply amount adjusting means for adjusting the amount of ink supplied to the plate cylinder for each ink supply unit width divided in the axial direction of the plate cylinder;
The print control means includes
Prior to the start of printing, the ink supply amount preset means presets the supply amount of ink supplied from the ink supply amount adjustment means based on the image data corrected by the image data correction means. The control device for a printing press according to any one of claims 1 to 4. The printing press further includes ink supply amount adjusting means for adjusting the amount of ink supplied to the plate cylinder for each ink supply unit width divided in the axial direction of the plate cylinder.
The print control means includes
Based on the image data corrected by the image data correcting means, an ink preliminary supply amount calculating means for calculating an ink amount to be supplied in advance to the plate cylinder;
Prior to the start of printing, the ink supply amount adjusting means has ink preliminary supply amount control means for preliminarily supplying ink to the plate cylinder by the ink amount set by the ink preliminary supply amount setting means. The control device for a printing press according to any one of claims 1 to 5. A mark detection sensor for detecting a cutting register mark of printing paper printed by the printing machine;
A cutting cylinder for cutting the printing paper in the width direction at a timing according to the detection information of the mark detection sensor and the traveling speed of the printing paper;
Detection range adjusting means for adjusting the detection range of the mark detection sensor based on the corrected image data;
The print control means includes
It has a conveyance path adjustment means for adjusting the length of the conveyance path of the printing paper based on the detection timing of the cutting registration mark detected by the mark detection sensor and the traveling speed of the printing paper. The control device for a printing press according to any one of claims 1 to 6. The printing press
A color tone sensor for detecting color tone information of printing paper printed by the printing machine;
Dampening water supply amount adjusting means for adjusting the amount of dampening water supplied to the plate cylinder,
The print control means includes
A dampening water supply amount control means for controlling the dampening water supply amount adjustment means based on the detection result of the color sensor and the corrected image data is provided. 8. The control device for a printing press according to any one of 7 above. The printing press
A color tone sensor for detecting color tone information of the printing paper printed by the printing machine;
The print control means includes
2. A simple plate inspection means for detecting an error of a printing plate mounted on the plate cylinder based on a detection result of the color tone sensor and the corrected image data. The control device for a printing press according to any one of 8. A method of controlling a printing press that performs printing with a printing plate mounted on a plate cylinder,
A print data acquisition step of acquiring print data including image data of a print pattern;
A correction information acquisition step for acquiring correction information regarding the position of the image data for the image data included in the print data acquired in the print data acquisition step;
An image data correction step for correcting the image data based on the image data and the correction information included in the print data;
A printing press control step for controlling the printing press based on the print data including the image data corrected in the image data correction step,
The correction information, as the position correction information of the image data corresponding to the axial direction of the plate cylinder, reference the upper Symbol plate is set in advance with the axial position of the plate cylinder, which is attached to the plate cylinder A control method for a printing press, comprising a displacement amount with respect to a position. A plate mounting position detecting step for detecting a displacement amount between an axial position of the plate cylinder on which the printing plate is mounted on the plate cylinder and a preset reference position;
11. The control device for a printing press according to claim 10, wherein the correction information includes the displacement amount detected in the plate mounting position detecting step. 12. The printing press control method according to claim 10, wherein the correction information includes scale correction information of the image data. The printing press control step includes:
A printing color tone detecting step for detecting color tone information of the printing paper printed by the printing machine;
An ink supply amount control step for adjusting the amount of ink supplied to the plate cylinder for each ink supply unit width divided in the axial direction of the plate cylinder based on the detected color tone information and the corrected image data The method for controlling a printing press according to any one of claims 10 to 12, characterized by comprising: The printing press control step includes:
Prior to the start of printing, there is an ink supply amount presetting step for presetting the amount of ink to be supplied to the plate cylinder for each of the ink supply unit widths divided in the axial direction of the plate cylinder based on the corrected image data. The control method for a printing press according to any one of claims 10 to 13, wherein the control method is performed. The printing press control step includes:
11. An ink preliminary supply step that preliminarily supplies ink to the plate cylinder by an ink preliminary supply amount set based on the corrected image data prior to the start of printing. The control method of the printing machine of any one of -14. The printing press control step includes:
A cutting mark detection step of detecting a cutting registration mark of the printing paper printed by the printing machine with a mark detection sensor whose detection position is adjusted based on the corrected image data;
A cutting register adjustment step of adjusting the length of the conveyance path of the printing paper based on the detection timing of the detected cutting registration mark and the traveling speed of the printing paper;
A printing machine according to any one of claims 10 to 15, further comprising a web cutting step for cutting the printing paper in a width direction at a timing according to a traveling speed of the printing paper. Control method. The printing press control step includes:
A printing color tone detecting step for detecting color tone information of the printing paper printed by the printing machine;
A dampening water supply amount control step of adjusting a dampening water amount to be supplied to the plate cylinder based on the detected color tone information and the corrected image data, The control method of the printing machine of any one of Claims 10-16. The printing press control step includes:
A printing color tone detecting step for detecting color tone information of the printing paper printed by the printing machine;
A simple plate inspection step for determining whether or not the printing plate mounted on the plate cylinder is incorrect based on the detected color tone information and the corrected image data. A control method for a printing press according to any one of claims 10 to 17.

Images