JP3456582B2 - Proof printing system and its proofing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a proof printing system for producing a proof for use as a printing sample for a multi-color offset rotary press, and a proofing machine for the proof printing system. The present invention relates to a proof printing system and a proofing machine therefor.

[0002]

2. Description of the Related Art In the newspaper printing industry, which has been delayed in high-quality color printing in the printing industry, in recent years, color printing of newspapers has become popular due to needs and technological improvements. So-called newspaper colors are roughly classified into edit colors that can be handled freely by the company and advertisement colors that are restricted by advertisers.

The edited color is generally color-separated by in-house equipment, and film-made and plate-made. On the other hand,
There are various types of processing for advertising colors, such as bringing in color separation films from advertisers and film plate making processing at our own equipment, but finally assigning letters, line drawings, color images, etc. Most of the production is done in-house.

[0004] In these newspaper companies, it is common to print the same paper surface with an offset rotary press composed of a plurality of printing units using a printing plate made in-house, and proofread for quality control of the printed paper surface to be printed. Printing is used (see pages 11 to 12 of "Newspaper Printing Handbook" published by The Japan Newspaper Association, April 10, 1997).

These are based on proofs brought in by the advertiser, proofs by a proof machine of its own (hereinafter referred to as mechanical proofs), or other proofs (hereinafter referred to as simple proofs). Simple proofs show reproducibility different from mechanical proofs because images are reproduced by a photographic method without using printing ink, and are extremely unsuitable for achieving the target quality of printed matter.

[0006] The proof print is originally a quality sample shown to the ordering party of the printed matter, and if approved by the ordering party,
It is the target quality of the printed matter. Since the printed matter printed by this machine for printing the proof must naturally be printed with the same quality as the proof, the proof is used for quality control for internal production control.

Therefore, in order to bring the main print close to the reproducibility of the proof print as much as possible, it is not necessary to match the main print with the proof print, but it is required to create a proof print matching a reference value of printing. (4 April 1994
It is needless to say that it is most preferable to print a proof print on this machine for printing the main print on page 25 of "Offset printing technology" issued by Japan Printing Technology Association on May 25.

However, printing a proof with this machine is a work that requires a great deal of time and material, and is rarely performed. To obtain a proof, a method similar to this is used. Often taken. For example, in the case of a proof machine, a machine proof is generally produced by an offset proof machine using sheets.

The calibrator includes a hand calibrator, an automatic calibrator,
There is a multicolor automatic proofing machine, etc. (see Jun 97, 1987, Shohachi Hatake, published by Printing Publishing Research Institute, "Basic Manual of Illustrative Platemaking and Printing," page 97). They are,
The printing speed is extremely low compared to the printing speed of an offset rotary press that prints on web paper.

In addition, since the proofreading machine uses ink that has a low printing pressure, a high viscosity, and a high hardness, the general proof of halftone dot reproduction is that the machine proof is the final proof obtained with this machine. The halftone dots tend to be smaller than that, that is, the dot gain tends to be smaller. Therefore, if printing is performed using a printing plate made under the same conditions, the color tone and gradation of the mechanical proof and the final printing will not match, and various measures are taken against this.

For example, in the case of a mechanical proof printing plate material, in order to bring the halftone dot reproducibility of the mechanical proof printing closer to that of the main printing, the printing plate is made finer and the photosensitive coating film is made thinner, and the exposure amount for printing is reduced. At least halftone dots are formed so as to avoid thinning of halftone dots. On the other hand, in the printing plate of the main printing, on the contrary, the grain is roughened, the photosensitive film is thickened, and the amount of exposure for printing is increased to form thin halftone dots which are burned down.

These printing plates are used properly,
It is handled so as to reduce the difference in color tone and gradation between the machine proof and the final print (July 2, 1987).
0th day, edited by Japan Printing Society, published by Gihodo Publishing Co., Ltd., “Printing Engineering Handbook”, pages 516 to 517,). However, in mechanical proof printing, each color is printed in separate steps, so the ink of the first printing is dried and then the next ink is transferred, which is the so-called dry trapping method. In many cases, the reproducibility of the density range is wider than that of actual printing.

On the other hand, the actual printing is performed by a so-called wet trapping method in which the ink of the subsequent printing is transferred one after another to the place where the ink of the prior printing cannot be dried and is wet, and the transfer amount of the ink is the mechanical calibration. Less than printing,
It shows a narrow reproducibility of the concentration range (June 1, 1999,
See "Printing Knowledge", page 100, published by The Nihon Printing Shimbun Co., Ltd.).

In printing with this machine, the operator determines the paper surface quality of the printed matter as a product based on the image ratio of the color separation paper surface so that the color tone and gradation can be reproduced based on each proof. The ink supply amount of this machine is preset, and each part of this machine is adjusted during operation.

[0015]

There are various problems in using the proof print obtained by each of the methods described in the prior art as a print quality control standard for in-house process control in newspaper printing, for example.

In the proofing machine, the printing pressure and the printing speed are extremely low, the transfer or trapping of ink is good, and the thickening of halftone dots, that is, the increase in dot gain, which occurs during printing, is extremely small. Moreover, the properties of the ink and dampening water are different from those of the actual printing, and the ink supply mechanism and the dampening water supply mechanism are not compatible with this machine. Shows a reproducibility in a much wider density range than the reproducibility of the final print, and is far from the reproduction range of the final print, so it cannot be used as a standard for managing the print quality of the final print. There is a problem.

In addition, since newspapers and the like place importance on promptness, there are cases in which proof printing by a simple proofing method, which cannot be reproduced by actual printing, is used for quality control of color printing paper. However, there is a problem that it is not possible to reproduce the color tone and gradation that are reproduced by simple proof printing.

In mechanical proof printing, skill in operating the proof machine is required, printing speed is extremely low, printing pressure is light, high quality paper is used as compared with newsprint paper, dot gain is small, ink There are various differences compared to this machine such as different properties and relatively hard ink, structurally different ink supply mechanism and fountain solution supply mechanism, and there is a difference in quality between machine proof printing and final printing. I will end up.

Therefore, by using the same material as the printing plate used for the proofing machine and using the printing plate made under the same conditions for this machine, it is possible to reproduce the color tone and gradation etc. so that the main printing will match the proof printing. Since it is impossible, reduce this difference as much as possible,
There is a problem that it is necessary to manufacture a dedicated printing plate for proof printing in order to bring it closer to the range reproducible in actual printing.
In addition, when the finish of the final printing is insufficient, a skilled worker must look at them and reset or correct the disassembling conditions for the scanner etc., and repeat the plate making. There is the problem of wasting time and money.

Further, since the proof print often deviates from the print reproducible range by this machine, the target quality of the main print, which is the original mission, is not achieved, and the control standard is not determined in the end. There is a problem in that it is often necessary to create a final copy with. This also poses a problem of impeding the rapid publication of color newspapers with good print quality without producing wasted paper.

An object of the present invention is to solve the problems of the above-mentioned conventional techniques all at once. In other words, by eliminating the need to make a special plate for proofreading in consideration of the reproducibility of the tone and gradation of this machine, and by printing with the printing section that has the same basic configuration as this machine, It is an object of the present invention to provide a proof printing system and a proofing machine therefor capable of extremely easily and promptly obtaining a proof proof having reproducibility which is not different from that of a skilled worker without depending on a skilled worker.

[0022]

A proof printing system for preparing a proof using a printing plate obtained by collecting at least one kind of data of three kinds of data of image data, character data and line drawing data according to the present invention. Is at least one of the above
Plate-making means for processing seed data to make a plate, a proofing machine that prints using the plate made by the plate-making means, and the print quality of the proof printed by the proofing machine is measured according to predetermined items. Print quality measuring means, a print quality judging means for comparing the measurement result of the print quality measuring means with a predetermined print quality standard, and a proof print included in the print quality standard based on the comparison result of the print quality judging means. Notify that all of the measurement results of the correction data creation means and the print quality measurement means that calculate and output the data that corrects the disassembly conditions in the plate making to an appropriate value so that they can meet the predetermined print quality standard The proofreading machine prints the final copy, and the data processing by the plate making means includes correction based on the correction data created by the correction data creating means. It is provided with a similar printing pressure applying mechanism and the ink supply mechanism and the machine.

The plate making means can output the print quality control gauge along with the image data, the character data and the line drawing data, and the print quality measuring means can determine the predetermined items for the print quality control gauge. The proofreading machine has a paper feed unit for supplying web paper, a printing unit for continuously printing only one surface of the web paper, and a processing unit for cutting and processing the web paper.

The printing unit has a plate cylinder having a corresponding ink supply mechanism, a blanket cylinder, and an impression cylinder, and the contact between the plate cylinder and the blanket cylinder and the contact between the blanket cylinder and the impression cylinder are possible at the same time. A printing unit for printing one page width or two page width of a newspaper is arranged in a stack in the height direction and at least integrally connected with a processing section. Furthermore, an ink supply mechanism is provided over the entire supply width at all times. It is a keyless ink supply mechanism that can supply a fixed amount of ink.

The calibrator comprises a supply unit for supplying web paper,
The printing unit has a printing unit that can print only one surface of the web paper while pulling out the web paper from the paper feeding unit, and a processing unit that cuts and processes the web paper printed by the printing unit in print image units, and the printing unit,
Newspaper 1 having a plate cylinder having a corresponding ink supply mechanism, a blanket cylinder, and an impression cylinder, and capable of simultaneously contacting the plate cylinder and the blanket cylinder and contacting the blanket cylinder and the impression cylinder
The printing units for printing the page width or the two page widths are arranged in a stack in the height direction, and at the same time, the ink feeder
The key is to supply a constant amount of ink to the entire supply width.
It is a non-ink supply mechanism, and the processing section is integrated with the printing section.
It is connected, and between the printing section and the processing section,
Put the web paper on the guide roller and the outfeed roller.
The guideway that guides you to the processing section via the
Printed web paper provided in two different positions
Depending on the printing unit used when printing
It is guided to the processing unit that is integrally connected to the printing unit via the guide path of
Is provided.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A proof printing system 14 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of the proof printing system 14 and the flow of the data, and the solid lines between the blocks indicate the connection relationship.
The broken line indicates the operation / action.

In FIG. 1, the proof printing system 14 is
A plate making unit 22, which will be described later, a proofing machine 15 that prints with the printing plate 13 made by the plate making unit 22, and a proof print 16 printed by the proofing machine 15 are printed to determine the print reproducibility. Quality control gauge 11
(June 30, 1987, Printing Bureau Choyokai, "Printing Encyclopedia," page 35, March 20, 1998, Inc.
254, "Basic knowledge of printed matter production"
~ 256 pages, 288 ~ 299 pages, and 199
Print quality measuring means 1 for measuring "Knowledge of printing", pages 74 to 76, issued by Nihon Printing Shimbun Co., Ltd. on June 1, 1997 by a densitometer or a spectrophotometer.
7 and the quality measurement data 17 by the print quality measuring means 17
d is input, and the quality is judged according to a predetermined print quality control standard, and in the case of a pass judgment that is within the standard, the plate making instruction data 18f is sent to the plate making means 22 (for example, the total scanner 6). In addition to outputting the acceptance determination data 18e to the notifying means 20, and in the case of the rejection determination that is not within the standard, the rejection determination data 18d that requires correction is corrected data generation means 19
When the reject quality determination data 18 and the reject quality determination data 18d to be output are input, the reject quality determination data is obtained in order to obtain the correction data 19d for correcting the platemaking conditions in the platemaking unit 22, for example, the total scanner 6. 1
It is composed of a correction data creating means 19 for processing 8d and a notifying means 20 for notifying the completion of proof printing when the acceptance judgment data 18e is inputted.

The total scanner 6 which is the plate making means 22 of the proof printing system 14 is composed of a data processing unit 8, a scanner 7, an output device 9 and a data file 10. A description will be given with reference to FIG.

Of the print originals 1, the digital originals 2 stored in advance in the electronic medium are directly input to the data processing unit 8 of the total scanner 6. The line drawing manuscript 3 such as an illustration is passed through the input processing device 5 and the digital data 5d.
And is input to the data processing unit 8.

The continuous-tone original 4 such as a color photograph is color-separated by the scanner 7 of the total scanner 6, and the image data 7d is input to the data processing unit 8 to perform preset color-tone correction and gradation correction. Done. The print document 1 input to the data processing unit 8 is appropriately stored in the data file 10 as color separation image data, line drawing data, and character data.

The color separation image data and line drawing data are variously processed by the data processing unit 8 of the total scanner 6 to properly collect line drawings such as characters and illustrations, photographs, etc. The plates are collected so as to be arranged in the printing area of the plate 13.

The separated paper surface data 8d collected together with the print quality control gauge 11 is output from the output device 9 as a color-separated film 12. For example, in order to obtain a four-color printed matter, a set of four films 12 which are disassembled so as to correspond to indigo, crimson, yellow, and black inks are output. These films 12 are supplied to a plate making apparatus (not shown) and, for example, P of an offset printing plate material is supplied.
The color-separated printing plate 13 which is printed on the S plate and provided to the proof machine 15 for four-color printing is manufactured.

Regarding the output device 9, the film 12 is used.
The output device 9 has been described above.
However, a method of directly exposing the PS plate without exposing the decomposed paper surface data 8d through the film 12 and directly outputting the printing plate 13, that is, a so-called direct plate making plate may be possible.

At the same time, the printing quality control gauge 11 for controlling the printing quality is printed on the printing plate 13 thus plate-made, for example, at a portion corresponding to the top side of the printing paper surface. In the above example, three types of data, color separated image data, line drawing data, and character data, are handled, but one or two types of data may be handled.

Next, the proofing machine 15 of the proof printing system 14
Will be described with reference to FIGS. 2 to 8b. As shown in FIGS. 2 to 5, the proofreading machine 15 supports the paper 31 having a width of one page of the newspaper and can feed the paper 31 to the downstream side.
0, the in-feed unit 40 for feeding out the web paper W, and the four printing units 51, 52, 53, 54 are stacked and one side 4
Tower-type printing unit 50 capable of color printing, web paper W after printing
Outfeed section 70 that pulls in appropriate tension to
The web paper W is formed into a folding section 89 that is a processing section 80 that cuts the web paper W into pages and folds and discharges the web paper into two pages. In the illustrated example, the plate cylinders P1, P2, P3, and P4 have a perimeter of a newspaper. It has a length of 2 pages in the vertical direction and is constructed so that two pages of newsprint can be printed in portrait orientation each time it is rotated once.

The paper feed section 30 is provided with a shaft 32 capable of supporting a web 31 having a width of one page of newspaper, and the web 31 is detachably supported. The web paper W delivered from the web 31 passes through the swing roller 41 that absorbs the pulsation of the traveling web paper W, and the infeed roller 42 of the infeed unit 40 controlled by the tension control means (not shown). An appropriate tension is given by 43, and it passes from the lower part of the printing unit 51 through the guide roller G1 and 4
The four printing units 51, 52, 53, 54 are used to print four colors on one side.

The printing units 51, 52, 53, 54
Corresponding to them, plate cylinders P1, P2, P3, P4 are provided so that one side of the web paper W can be printed in four colors. As will be described later, each pair of blanket cylinders B11, B1.
2, B21 / B22, B31 / B32, B41 / B42
Is provided. This printing surface is the printing surface of the proof 16.

As shown in FIG. 4, the reason why the printing surface of the proof print 16 printed by the four printing units 51, 52, 53, 54 of the printing unit 50 is the printing of only one side of the web paper W is as follows. This is because it is possible to accurately capture reproducibility such as color tone and gradation by preventing the effect of seeing through the ink on the back surface that would occur when printing on both sides.

On the left side of the web W, each printing unit 51,
Plate cylinders P1, P2, P3, P4 of 52, 53, 54 and a keyless ink supply mechanism 55, which will be described later, are arranged. As a result, when the web paper W is cut at the folding section 89 to be described later and folded as the signature 16, the printing surface of the signature 16 comes to the front side.

FIG. 5 is a detailed explanatory view of the printing unit 51 shown in FIG. 4, and the other printing units 52, 53, 54 are also the same, and therefore, their explanatory views are omitted to avoid duplication. As shown in FIGS. 5 and 6, a pair of blanket cylinders B11 and B12 are provided so as to face each other with the web paper W interposed therebetween, and one blanket cylinder B12 is a so-called impression cylinder.

The blanket cylinder 12 is used as the impression cylinder because it is a printing condition closer to that of a so-called BB type printing machine, in which a pair of blanket cylinders each having a plate cylinder are used for printing on both sides. However, the impression cylinder may be a so-called impression cylinder composed of a metal outer peripheral surface.

The blanket cylinder B11 and the impression cylinder B12 also serve as a printing pressure imparting mechanism 69 so that the blank paper cylinder W11 is pressed against each other with the web paper W interposed therebetween as in the case of this machine. In contact with the plate cylinder P1 on the outer periphery,
The image transferred from the plate cylinder P1 is transferred to the web paper W.

Damping water is supplied to the plate surface of the printing plate 13 attached to the plate cylinder P1 by a dampening water supply mechanism 64 via a water source roller 65 and a watering roller 66 in contact with the plate surface. Further, the keyless ink supply mechanism 55 constantly supplies the plate surface with uniform ink over the entire ink supply width.

In the keyless ink supply mechanism 55, the ink of the ink fountain 56 is an ink source roller 57, an ink pickup roller 58, an ink transfer roller 59, a metering roller 60 in contact with a doctor blade 61, an inking roller 62 in contact with the plate surface, It is designed to be supplied via 63.

As shown in FIGS. 7A to 8B in which the portion B shown in FIG. 6 is enlarged, the peripheral surface of the measuring roller 60 is provided with a large number of minute recesses 67 and 68 having a known volume. The amount of ink transferred to the ink is controlled so as to be always constant over the entire area in the ink supply width direction.

As shown in FIGS. 7 and 8, the circular minute recesses 67 in plan view are obtained by, for example, laser processing, and the quadrangular minute recesses 68 are obtained by mechanical milling. You can The peripheral surface of the measuring roller 60 formed by these minute recesses 67 or recesses 68 is finished by grinding or polishing.

The ink supplied to the printing plate 13 attached to the plate cylinder P1 is supplied from the ink fountain 56 to the ink source roller 5
7 is transferred to the outer surface of the ink source roller 57 excessively, and is transferred to the outer surface of an ink pickup roller 58 provided close to the outer surface of the ink source roller 57 with a slight gap, and further contacted with the ink pickup roller 58. A large number of minute recesses 6 are formed on the circumferential surface through the provided ink transfer roller 59.
7 ... or a measuring roller 60 having recesses 68 ,.

Excess ink on the peripheral surface is measured by the measuring roller 6.
It is scraped off by the blade edge of the doctor blade 61 in contact with the peripheral surface of 0. The ink scraped off is the ink fountain 5
It is collected in 6 and reused. The measuring roller 60 that has passed without being scraped by the blade edge of the doctor blade 61
The ink clogged in the minute recesses 67, ... (68, ...) of the
It is transferred to 2, 63 and supplied to the plate surface of the printing plate 13. In this way, a constant amount of ink is constantly supplied to the plate surface from the metering roller 60 over the entire area in the ink supply width direction.

Next, the four-color printed web W is shown in FIG.
As shown in FIG. 4, the outfeed roller 7 of the outfeed unit 70 passes through the uppermost guide roller G3.
1 so that the tension is kept constant during printing. Then, it is guided to the folding section 89 which is the processing section 80 via the adjusting roller 73 for adjusting the cutting position.

When the proof 16 for two-color printing is to be obtained, the printing units 53 and 54 are stopped and the printing plate 13 is moved to the plate cylinders P1 and P1 of the printing units 51 and 52, respectively.
Attach to P2 and print on web W. The two-color printing web paper W printed by the two printing units 51 and 52 is a guide roller G2 and an outfeed roller 7.
Adjustment roller 7 for adjusting the cutting position after passing through 2 and
It is adapted to be guided to the folding portion 89 via the third step.

Further, when the proof 16 for three-color printing is to be obtained, for example, the facing portions of the blanket cylinder B41 and the impression cylinder B42 of the printing unit 54 facing each other are separated from each other, and the web paper W is printed in the four-color printing. It is sufficient to drive through the same route as when. After that, the web paper W is guided to the folding section 89 via the adjusting roller 73 for adjusting the cutting position.

In the folding section 89 which is the processing section 80, the axial directions of the nipping roller 81, the saw cylinder 82, the gripper 83, the impeller 85, etc. are parallel to the axial directions of the plate cylinders P1 ,. , And is integrally connected to the printing unit 50 to be compact. The web paper W guided to the folding section 89 is
The nipping roller 81 firmly nips the paper and feeds it downward. The saw cylinder 82 and the gripper 83 cut each page, fold it into a signature (proof) 16 and carry it by a conveyor belt 84. One by one is received by the rotating impeller 85.

These signatures 16, ... Are impeller 85
Is passed to the paper discharge conveyor 86 so as to be overlapped one after another, and is discharged as a proof copy 16. The processing unit 80 may be a mechanism (not shown) that cuts, stacks, and accumulates the printed web paper W.

As described above, the calibrator 15 does not need to perform ink adjustment during printing, because an appropriate amount of ink is always supplied to the plate surface of the printing plate 13 by the keyless ink supply mechanism 55, .... The printing plate 13 is mounted on the plate cylinders P1 to P4, and after the operation of the proofing machine 15 is started, the printing machine 2 for actual printing is used.
Since the printing speed can be rapidly increased to the printing speed substantially the same as the normal printing speed of 1, the proof copy 16 can be obtained in a short time.

The proofing machine 15 is constructed so as to be capable of single-sided printing of a page width of a newspaper. However, in order to obtain a spread proof, the width is widened to correspond to the page width of two pages. It goes without saying that the configuration is sufficient. In addition, a plurality of paper rolls and a paper splicing unit (not shown) may be added to the paper feeding unit 30.

Further, the printing section 50 is not limited to being composed of four printing units 51, 52, 53, 54, and the printing section (not shown) or the offset wheel (not shown) of the target machine. The number of printing units may be made uniform according to the configuration of the printing unit of the turning machine. Also, the printing unit 5
The number 0 is not limited to the tower type arrangement in which the printing units are vertically stacked, but may be a horizontal type arrangement in which the printing units (not shown) are arranged side by side.

The printing plate 13 on which the printing quality control gauge 11 is printed is the plate cylinder P1 of the proofing machine 15 as described above.
To P4 and the proof 16 is printed.
The proofreading machine 15 is operated at a printing speed similar to that of the keyless multicolor offset rotary press, which is the main machine 21,
A proof 16 is obtained.

The print quality control gauge 11 imprinted on the proof 16 has a so-called background density of a monochrome ink having a halftone dot area ratio of 100% in terms of reproducibility in the image density range, from highlight to shadow. Density, that is, gradation and tone reproduction, which are gradation reproducibility, is the so-called dot gain, which is the thickening of halftone dots by the dot gain scale, transferability of overprinting ink is trapping of postprinting ink, and tone reproduction is grayscale. Holds various information related to plate making and printing such as achromatic gray balance consisting of overprinting of indigo, crimson and yellow inks.

The print quality measuring means 17 measures the print quality control gauge 11 printed on the proof print 16 to obtain data on the various information. When the print quality control gauge 11 is not used, it is needless to say that the same measurement is performed on an appropriate image on the printing paper surface to obtain data on various information.

Next, the operation of the proof printing system 14 will be described. As shown in FIG. 1, the total scanner 6
Through the film 12 output from the output device 9 of the above, the printing quality is managed in the printing plate 13 that is plate-made or the plate 13 that is directly plate-made from the output device 9 of the total scanner 6 as described above. The print quality control gauge 11 for printing is printed.

As shown in FIGS. 2 to 4, the keyless ink supply mechanism 55, ... And the dampening water supply mechanism 64 ,.
The proofreading machine 15 having “*” is operated at a printing speed similar to the printing speed of the main body 21 after mounting the printing plate. And
It is possible to obtain the proof print 16 on which the print quality control gauge 11 is imprinted at the same time as the text and the image.

Proofprint 1 printed by the proofing machine 15
6 is set in the print quality measuring means 17 shown in FIG. 1, the print quality measuring means 17 causes the print quality control gauge 11 imprinted on the proof 16 to measure the ink density and spectral characteristics of each measured portion of the print quality control gauge 11. Measure quickly. Print quality measuring means 1
Quality measurement data 17 of each measured part measured by 7
The value d is input to the print quality determination unit 18, and is calculated and compared based on a predetermined print quality control reference value. As a result, when it is determined that the proof print 16 is within the print quality control standard, the print quality determination unit 18 outputs the pass determination data 18e to the notification unit 20 and also instructs the total scanner 6 to make a plate. The data 18f is output.

The acceptance judgment data 18e instructs the notifying means 20 to notify that all the measurement results of the print quality measuring means 17 satisfy the predetermined print quality standard and the production of the proof print 16 is completed, and the plate making process is performed. The instruction data 18f instructs the total scanner 6 to start plate making for this machine.

On the contrary, when it is determined that the proof copy 16 is out of the print quality control standard, the print quality determination means 18 outputs the rejection determination data 18d, which is input to the correction data creation means 19. It The correction data creating means 19 performs a calculation to correct the decomposition condition to an appropriate value based on the rejection determination data 18d, calculates a correction value, and outputs it as the correction data 19d.

The correction data 19d is the correction data creating means 1
When it is output from 9 and input to the data processing unit 8 of the total scanner 6, the total scanner 6 corrects the disassembling conditions for the corresponding printing plate 13 by the data processing unit 8, and the corrected disassembled paper surface is corrected. Data 8d is created.

The decomposed paper surface data 8d is input from the data processing unit 8 to the output device 9, and the output device 9 outputs the properly corrected film 12 or the printing plate 13 under the decomposed condition. Whether or not the correction was proper may be determined by mounting the corrected printing plate 13 again on the proofing machine 15 for printing and performing the same procedure.

Print quality control gauge 1 from the output device 9
The presence or absence of the output of 1 can be switched so that it is output to the printing plate 13 used for the proofing machine 15 and not output to the printing plate 13a used for this machine 21, for example, from the print quality determination means 18 to When the plate-making instruction data 18f output together with the acceptance determination data 18e is input to the data processing unit 8 of the total scanner 6, the switching is automatically performed, and the printing quality control is performed as the printing plate 13a used for the machine 21. Plate making can be performed without outputting the gauge 11 for use.

Since the printing plate 13 or printing plate 13a produced through the output film 12 and the printing plate 13 or printing plate 13a directly produced by the plate 12 have different image reproduction on the printing plate surface, Correction data 1 according to the method
The correction data creating means 19 is set so that 9d can be created. In this way, the optimum printing plate is obtained and printed by the proofing machine 15, and the obtained proofing print 16 is used as a sample of the target quality of the final printing by the main printing machine 21 having a plurality of printing units.

[0069]

(1) According to the invention of claim 1 , a proof printed by a proof machine, which is a printing system similar to this machine, is
Print quality measuring means and print quality judging means thus printing quality control gauges imprinted proof is measured printed
Quality is judged and calibrated based on the correction data based on the judgment
A proof press and a printing plate satisfying the print quality standard with optimum reproducibility can be easily and easily prepared by disassembling and correcting the plate so that the print reproducibility of the plate is within the print quality standard. It is possible to obtain the final print, which has been obtained and has achieved the target quality within the management standard, very easily and promptly without depending on a skilled worker.

(2) According to the invention of claim 2, in (1)
In addition, the print reproducibility of the proof can be easily controlled by the print quality control gauge printed on the printing plate. (3) According to the invention of claim 3, in addition to (1), the proofreading machine can very easily supply the proof printing considering the reproducibility of the color tone and gradation of the final printing as the target quality of the final printing. At the same time, a plate with good reproducibility that has been color-separated and corrected based on the correction data obtained by the proofing system can be used with this machine, so that good quality color paper can be printed quickly without wasting paper. be able to.

(4) According to the invention of claim 4, the proofreading machine has a keyless ink supply mechanism that does not require ink adjustment, and an appropriate amount of ink is always supplied uniformly to the plate surface. , It is not necessary to make two plates for proof printing and main printing in consideration of reproducibility such as color tone and gradation of main printing, and to increase the printing speed to about the same as the normal printing speed of this machine. Therefore, it is possible to obtain a proof print that can be reproduced easily by this machine in a short time. That
The processing unit is integrated with the printing unit to form a compact unit.
The web paper is processed with a constant tension during printing.
Guided to the department.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a configuration of a proof printing system according to an embodiment of the present invention.

FIG. 2 is a front view of a proofing machine of the proof printing system according to the embodiment of the present invention.

3 is an explanatory plan view of the calibrator taken along the line AA in FIG.

FIG. 4 is a cross-sectional explanatory diagram of a printing unit in FIG.

5 is a cross-sectional explanatory diagram of a printing unit of the printing unit in FIG.

6 is a partial cross-sectional perspective explanatory view of a printing unit of the printing unit in FIG.

FIG. 7 is an explanatory diagram of a roller surface concave shape (circle) of a B portion of the printing unit of the printing unit in FIG.

8 is an explanatory diagram of a roller surface concave shape (quadrangle) of a B portion of the printing unit of the printing unit in FIG.

[Explanation of symbols]

1 Printed manuscript 2 Digital manuscript 3 Line drawing manuscript (text, illustration) 4 Continuous tone manuscript (color photo) 5 Input processing device 5d Digital data 6 Total scanner 7 Scanner 7d Image data 8 Data processing unit 8d Disassembled paper surface data 9 Output device 10 data File 11 Print quality control gauge 12 Films 13 and 13a Printing plate 14 Proofing system 15 Proofing machine 16 Proofing (folder) 17 Printing quality measuring means 17d Quality measuring data 18 Printing quality judging means 18d Non-qualification judging data 18e Pass Judgment data 18f Plate making instruction data 19 Correction data creating means 19d Correction data 20 Notification means 21 This machine (keyless multicolor offset rotary press) 22 Plate making means 30 Paper feed section 31 Rolled paper 32 Shaft 40 Infeed section 41 Swing rollers 42, 43 Infeed roller 50 ( Printing unit 51, 52, 53, 54 printing unit 55 keyless ink supply mechanism 56 ink fountain 57 ink source roller 58 ink pickup roller 59 ink transfer roller 60 measuring roller 61 doctor blade 62, 63 inking roller 64 dampening water Supply mechanism 65 Water source roller 66 Watering roller 67 (Circular) concave portion 68 (Quadrant) concave portion 69 Printing pressure applying mechanism 70 Outfeed portions 71 and 72 Outfeed roller 73 Adjustment roller 80 Processing portion 81 Nipping roller 82 Saw Cylinder 83 Holding Cylinder 84 Conveyor Belt 85 Impeller 86 Paper Ejecting Conveyor 89 Folding Part W Web Paper G1, G2, G3 Guide Roller, P1, P2, P3, P4 Plate Cylinder, B11, B21, B31, B41 Blanket Cylinder B12 , B22, B32, B42 Blanc Ket cylinder (impression cylinder)

Continuation of the front page (56) References JP-A-11-341293 (JP, A) Jikkaihei 1-83542 (JP, U) Jikkouhei 7-21314 (JP, Y2) Japan Society of Printing, Ed., Printing Engineering Handbook, Gihodo Publishing Co., Ltd., May 1, 1983, 1st edition, pages 572-574 i i) (3) (58) Fields investigated (Int.Cl. ⁷ , DB name) B41F 7/18 B41C 1/00 B41F 31/02 B41F 33/14

Claims (4)

(57) [Claims] 1. A proof printing system for producing a proof by using a printing plate obtained by collecting at least one kind of data of three kinds of data of image data, character data and line drawing data, and at least one kind of said proof printing system. Process the data of the plate to make a plate, a proof machine that prints using the plate made by the plate making method, and measure the print quality of the proof sheet printed by the proof machine according to the predetermined items. A print quality measuring unit, a print quality determining unit that compares the measurement result of the print quality measuring unit with a predetermined print quality standard, and a proof print included in the print quality standard can be printed based on the comparison result of the print quality determining unit. in the printing plate prepress as
Compensation data creating means for calculating and outputting data for compensating the decomposition condition to an appropriate value, and a notifying means for notifying that all of the measurement results of the print quality measuring means satisfy a predetermined print quality standard, The processing of the data by the plate making means includes a correction based on the correction data created by the correction data creating means, and the proofing machine is provided with a printing pressure applying mechanism and an ink supply mechanism similar to those of this machine for printing the final printing. A proofing system characterized by: 2. The plate making means is capable of outputting a print quality control gauge along with image data, character data and line drawing data, and the print quality measuring means is a predetermined item for the print quality control gauge. The proof printing system according to claim 1, wherein the proof printing system is for measuring. 3. A paper feed unit for feeding a web paper, wherein the proofing machine comprises:
It has a printing unit that continuously prints only on one surface of the web paper and a processing unit that cuts and processes the web paper.The printing unit has a plate cylinder, a blanket cylinder, and an impression cylinder having corresponding ink supply mechanisms. In addition, a printing unit for printing one page width or two page width of a newspaper, which enables simultaneous contact between the plate cylinder and the blanket cylinder and contact between the blanket cylinder and the impression cylinder, is arranged in a stack in the height direction. In addition, the ink supply mechanism is a keyless ink supply mechanism that can always supply a constant amount of ink to the entire supply width, and the processing unit is integrally connected to the printing unit. Proofing system. 4. A paper feeding unit for feeding the web paper, a printing unit for drawing out the web paper from the paper feeding unit and printing only on one surface thereof, and cutting the web paper printed by the printing unit into print image units. The printing unit has a plate cylinder having a corresponding ink supply mechanism, a blanket cylinder and an impression cylinder, and the contact between the plate cylinder and the blanket cylinder and the blanket cylinder and the impression cylinder. contact is simultaneously possible, together with a print unit for printing newspapers 1 page width or page width are arranged in superimposed in the height direction, i
The ink supply mechanism constantly supplies a constant amount of ink over the entire supply width.
It is a keyless ink supply mechanism that can be used, the processing section is integrally connected to the printing section, and the web paper is guided between the printing section and the processing section with guide rollers.
And reach the processing section via the outfeed roller
Two guideways are provided at different positions in the height direction.
The printed and printed web paper used for printing
Depending on the printing unit, it will be connected to the printing unit via one of the guideways.
A calibrator, which is provided so as to be guided to an integrally connected processing section .