JP2002067265A - Printer having printing plate recorder and image data forming apparatus used for printing plate recorder as well as printing plate recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer with an image recorder capable of preventing an emulsification of an ink, an image data forming apparatus used for the printing plate recorder and the printing plate recorder. SOLUTION: The image data forming apparatus 20 comprises an image data input editor 21, an RIP processor 22 for converting to binary image. data D1, a banded region data memory 23 for storing banded region data corresponding to a long-sized banded region along a printing width direction, a banded region specifying unit 24 for specifying a color of the banded region, a banded region data reader 25, a synthetic unit 26 for synthesizing the RIPed image data D1 and the read banded region data D2, and a transmitter 27. An operator selects the color of the banded region to be added to printing, and adds the banded region data to the image data based on the color. The added region is provided along a printing sheet width so that a predetermined or more amount of an ink is consumed. Thus, an excess emulsification brought about due to a small ink amount consumption is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a printing apparatus provided with a printing plate forming apparatus for forming a printing plate based on image data and performing printing using the prepared printing plate, and a printing plate forming apparatus. The present invention relates to an image data creation device and a printing plate recording device.

[0002]

2. Description of the Related Art In recent years, a printing apparatus having a printing plate recording apparatus for recording an image on a printing plate on a plate cylinder and performing plate making has been put to practical use, and is called a "digital printing machine" or the like. . This digital printing machine is characterized in that a complicated plate making operation is automated, so that a relatively skillless operator can easily obtain printed matter at low cost.

On the other hand, offset printing, particularly offset printing using dampening water, has a problem of emulsification of ink. That is, there is a problem in that dampening water is mixed into the ink to emulsify the ink, and if the emulsification is excessive, proper printing cannot be performed. Such excessive emulsification occurs, for example, when the consumption of ink is small. That is, if the ink on the ink roller is not consumed by printing, excessive dampening water is mixed therein, and since the ink is continuously kneaded excessively, emulsification due to mixing of air tends to occur.

Various methods can be considered to prevent such emulsification. For example, the simplest method is to remove ink that has been excessively emulsified for each operation. However, this method is troublesome because the ink must be changed for each operation. In addition, excessive emulsification during the operation cannot be prevented.

As other methods, it is conceivable to change the supply amount of dampening water for each area where the ink consumption is different, or to change the supply amount of ink, the kneading amount of ink, and the like.
However, this method is difficult for an inexperienced operator, and the printing apparatus must be provided with a mechanism that can vary the dampening solution amount for each area, a mechanism that varies the ink mixing amount, and the like.

[0006]

As a technique which can be easily solved even by a skillless operator with respect to the above-mentioned problems, it is considered that a minimum necessary amount of ink is consumed in each printing area. Can be That is, as described above, since excessive emulsification occurs when the consumption of ink is small, it is sufficient to consume a certain amount or more of ink during printing in order to prevent emulsification.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is intended to prevent excessive emulsification of ink in a printing apparatus provided with a printing plate recording apparatus that records a printing plate based on image data. It is an object of the present invention to provide a printing apparatus in which a region consuming more than a certain amount of ink is formed in a margin on a printing plate, and an image data creating apparatus and a printing plate recording apparatus used in the printing plate recording apparatus.

[0008]

According to a first aspect of the present invention, there is provided a printing plate recording apparatus which records an image on a printing plate based on image data, and supplies ink to the printing plate on which the image is recorded. In a printing apparatus that performs printing by printing, a predetermined color is selected from among printing colors by 1 to 4 according to an instruction from an operator.
Specifying means for specifying a color, and band area data for recording a band area along a print width direction in a print margin in a vertical direction when recording an image of a color specified by the specifying means on a printing plate And an image recording means for arranging and recording an image and a band area on a printing plate based on the image data and the band area data.

According to a second aspect of the present invention, in the printing apparatus according to the first aspect, the designation of the color by the designation means is performed by:
One of three colors of YMCK or one to three colors of three colors of YMC is designated.

According to a third aspect of the present invention, in the printing apparatus according to the first or second aspect, the band area comprises a solid area or a flat halftone area for consuming a predetermined amount or more of ink. I do.

According to a fourth aspect of the present invention, in the printing apparatus according to any one of the first to third aspects, the band area data preparing means stores the band area data relating to one or more predetermined band areas. It is characterized by comprising a stored band area data recording means and a band area data reading means for reading out corresponding band area data from the band area data recording means.

According to a fifth aspect of the present invention, there is provided the printing apparatus according to any one of the first to fourth aspects, further comprising an image data synthesizing means for synthesizing the image data and the band area data, wherein the image recording means is provided. Is characterized in that recording is performed based on synthesized image data.

According to a sixth aspect of the present invention, in the printing apparatus according to any one of the first to fifth aspects, the designation means can set the short side size of the band area in addition to the designation of the color. .

According to a seventh aspect of the present invention, in the printing apparatus according to any one of the first to sixth aspects, a long side size of the band area is a recording width of an actually recorded image or a maximum recordable width. Is substantially the same as any one of the above.

According to an eighth aspect of the present invention, in the printing apparatus according to any one of the first to seventh aspects, the band area is provided on the trailing side of the printing paper.

According to a ninth aspect of the present invention, in the printing apparatus according to any one of the first to eighth aspects, the band areas are arranged in parallel for each color without being overlapped.

According to a tenth aspect of the present invention, in the printing apparatus according to any one of the first to ninth aspects, a short side of the band region has a width of at least 5 mm.

According to an eleventh aspect of the present invention, in the printing apparatus according to any one of the first to tenth aspects, there is provided a display device capable of displaying a color of an image based on image data so that an operator can visually recognize the image. It is characterized by the following.

According to a twelfth aspect of the present invention, there is provided an image data creating apparatus for use in a printing plate recording apparatus for recording an image on a printing plate, wherein a predetermined color is selected from among printing colors by an instruction of an operator. Designation means for designating four or four colors; and band area data preparation for preparing band area data for recording a band area in a print margin in the top-to-bottom direction along the print width direction for the color designated by the designation means. Means, image synthesizing means for synthesizing the image data and band area data, and transmitting means for transmitting the synthesized image data to the printing plate recording apparatus.

According to a thirteenth aspect of the present invention, in the image data creating apparatus according to the twelfth aspect, the color designation by the designation means is one of four colors of YMCK or Y color.
One to three colors are designated from among three colors of MC.

According to a fourteenth aspect of the present invention, in the image data generating apparatus according to the twelfth or thirteenth aspect, the band area is formed of a solid area or a flat halftone area for consuming a predetermined amount or more of ink. It is characterized by.

According to a fifteenth aspect of the present invention, in the image data creating apparatus according to the twelfth or twelfth aspect, the band area data preparing means stores band area data relating to one or more predetermined band areas. And a band area data reading means for reading out the corresponding band area data from the band area data recording means.

According to a sixteenth aspect of the present invention, in the image data creating apparatus according to any one of the twelfth to fifteenth aspects, the designating means sets a short side size of the band area in addition to the designation of the color. It is possible.

According to a seventeenth aspect of the present invention, in the image data creating apparatus according to any one of the twelfth to sixteenth aspects, the long side size of the band area is determined by a recording width of an image to be actually recorded or a target. Or any of the recordable widths of the printing plates.

[0025] According to an eighteenth aspect of the present invention, in the image data generating apparatus according to any one of the twelfth to seventeenth aspects, the band area is provided on the trailing side of the printing paper.

According to a nineteenth aspect of the present invention, in the image data creating device according to any one of the twelfth to eighteenth aspects, the band areas are arranged in parallel for each color without being overlapped. And

According to a twentieth aspect of the present invention, in the image data creating apparatus according to any one of the twelfth to nineteenth aspects, a short side of the band region has a width of at least 5 mm.

According to a twenty-first aspect of the present invention, in a printing plate recording apparatus for recording an image on a printing plate based on image data, one to four specified colors are designated from printing colors by an instruction of an operator. Preparing banding area data for recording a banding area along a printing width direction in a print margin in a vertical direction when an image of a color specified by the specifying means is recorded on a printing plate. And an image synthesizing means for synthesizing the image data and the band area data, wherein the image and the band area are arranged and recorded on a printing plate based on the synthesized image data. It is.

According to a twenty-second aspect of the present invention, in the printing plate recording apparatus according to the twenty-first aspect, the color designation by the designation means is performed by selecting one of four colors of YMCK or three colors of YMCK. One to three colors are designated.

According to a twenty-third aspect of the present invention, in the printing plate recording apparatus according to the twenty-first or twenty-second aspect, the band area comprises a solid area or a flat screen area for consuming a predetermined amount or more of ink. It is characterized by.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the principle of the present invention will be described. FIG. 4 is an explanatory diagram illustrating an example of printing on the printing paper P. In this embodiment, an image IM and a band area S composed of a long solid area along the printing width direction are provided on the printing paper P.
Is printed. In the drawing, the direction from the top to the bottom is the printing direction, and the lower side of the drawing is the paper bottom side.

For example, assuming that the color of the "flower" in this example is magenta, relatively magenta ink is consumed in the area A where the "flower" is printed in the printing width direction. On the other hand, in the areas B and C where there is no “flower”, magenta ink is hardly consumed unless there is another image of the color related to magenta. In this case, the ink is continuously consumed without being consumed on the magenta ink rollers in the regions B and C, so that the emulsification of the ink proceeds excessively. In the region where excessive emulsification has occurred, the characteristics of the ink change, so that there has been a problem that, for example, an appropriate print quality cannot be obtained when printing the next job.

In the present invention, in the above case, a solid area of magenta is provided as the band area S. As a result, at least a certain amount of the magenta ink is
Therefore, excessive emulsification on the ink roller can be prevented.

Next, a preferred embodiment of the band region S will be described. First, when the band area S is converted into a print density as a minimum amount of ink to be consumed, it is about 1.3 to 2.5% in an A3 size transverse printing apparatus, and a short side is about 5 to 10 mm. Is preferred. When the short side size is too small, such as 5 mm or less, the effect of preventing emulsification is not obtained. The long side of the band area S may be set as appropriate by the operator in consideration of the situation, but is preferably provided over the maximum print width (paper width size) that can be printed. This is to ensure that there is no area where the ink is emulsified in the next job.

The band area S can be provided independently for each of YMCK. For example, depending on the image, it is conceivable to provide a band area for two or three colors. Further, when a plurality of band regions S are provided in parallel, it is preferable that each band region S is not overlapped on the printing paper as much as possible. That is, if two or more solids of 100% density are printed in superposition, there is a possibility of ink trapping and color turbidity. However, this is not the case when there is no margin for providing a large number of band areas S. The band region S is usually designated by any one to three colors of YMC, but if there is a character / line drawing region, a band region of K color may be set.

In the band region S, there are a case where a solid region is set so that ink can be efficiently consumed with a small width and a case where a flat screen is used. However, if the density of the flat screen is low, the width of the short side of the band region needs to be set large.

As for the position where the band region S is arranged, it is preferable to provide the band region S in the margin on the paper trailing side. That is, if the image density is provided on the upstream side of printing, the printing density of the leading end side of the image IM may be affected by the printing of the band area S.
This is because ghosts of the roller pitch tend to appear in the image.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view showing an example of a printing apparatus according to the present invention, and FIG. 2 is a diagram showing image data of a printing system including the printing apparatus and an image data creating apparatus which creates image data at a stage preceding the printing apparatus. FIG. 4 is a block diagram illustrating a processing configuration.

First, as shown in FIG. 1, this printing apparatus
As a printing mechanism, first and second plate cylinders 1 and 2 for holding a printing plate, first and second blanket cylinders 3 and 4 for transferring an ink image from each plate cylinder, and holding a printing paper Impression cylinder 5 contacting both blanket cylinders 3 and 4
A paper feed cylinder 6 and a paper discharge cylinder 7 for supplying or discharging printing paper to / from the impression cylinder 5, and the first and second plate cylinders 1, 2
A dampening solution supply unit 8 and an ink supply unit 9 for supplying dampening solution or ink to the upper printing plate, a paper supply unit 10 for sequentially supplying the unprinted printing paper stacked, and a printed printing paper. And a paper discharge unit 11 that is sequentially stacked.

On the other hand, this printing apparatus has a plate making mechanism,
A printing plate supply unit 12 for supplying an unexposed printing plate to the first and second plate cylinders 1 and 2; an image recording unit 13 for recording an image on a printing plate on the plate cylinder; And a printing plate discharging unit 15 for discharging a used printing plate.

The printing apparatus also includes an image pickup section 16 for picking up an image on the printed printing paper and measuring the amount of positional deviation, color density, and the like of the printed image, and each section of the printing apparatus. And a print control unit 17 (shown in FIG. 2) for controlling. Hereinafter, details of each unit will be described.

The first plate cylinder 1 is configured to be movable between a first printing position indicated by a solid line in FIG. 1 and an image recording position indicated by a two-dot chain line by a plate cylinder driving mechanism (not shown). Also, the second plate cylinder 2 is similarly configured to be movable between a second printing position indicated by a solid line in FIG. 1 and an image recording position indicated by a two-dot chain line by a plate cylinder driving mechanism (not shown). ing. That is, the first and second plate cylinders 1 and 2
When the printing operation is performed, the plate is arranged at the first or second printing position. When the plate making operation is performed, the plate is alternately arranged at the image recording position and the plate making process is performed on each plate cylinder. .

Each of the first plate cylinder 1 and the second plate cylinder 2 has a peripheral surface capable of holding a printing plate for two colors, and the printing plates of each color are opposed to each other by 180 degrees on the peripheral surface. Two sets of gripping means (not shown) for fixing to the position are provided. In the above description, two printing plates each having one printing region are mounted on the plate cylinder, but one printing plate having two printing regions arranged in line may be mounted. . Also,
For example, the surface of the plate cylinder itself may be used as a printing plate surface by applying and curing a predetermined polymer or the like.

The first blanket cylinder 3 is configured to rotate in contact with the first plate cylinder 1 at the first printing position, and the second blanket cylinder 4 is similarly rotated. The second printing cylinder 2 is configured to rotate in contact with the second plate cylinder 2 at the printing position 2. The first and second blanket cylinders 3 and 4 have the same diameter as the first and second plate cylinders 1 and 2, and are used to transfer blankets capable of transferring ink images of two colors from each plate cylinder. It is mounted on the peripheral surface.

The impression cylinder 5 includes the first and second plate cylinders 1,
It has a diameter of 1/2 and is configured to rotate in contact with both the first and second blanket cylinders 3,4. The impression cylinder 5 is provided with a gripper (not shown) capable of holding one sheet of printing paper having a size corresponding to a printing area on the printing plate. The gripper can be opened and closed at a predetermined timing by an opening / closing mechanism (not shown) to hold the printing paper.

The paper feed cylinder 6 and the paper discharge cylinder 7 have the same diameter as the impression cylinder 5 and are provided with not-shown grip means similar to the grip means provided on the impression cylinder 5. The gripping means of the paper feeding cylinder 6 and the paper discharging cylinder 7 are arranged so as to be able to transfer the printing paper in synchronization with the gripping means of the impression cylinder 5.

The first and second plate cylinders 1 and 2 arranged at the first and second printing positions, the first and second blanket cylinders 3 and 4, the impression cylinder 5, the paper feed cylinder The drum 6 and the paper discharge cylinder 7 are provided with a drive gear (not shown) having substantially the same diameter as the diameter of each cylinder at the drum end, and each gear meshes between the abutting cylinders. Therefore, by driving this gear by a printing drive motor (not shown), the respective cylinders can be rotationally driven synchronously.

In the printing apparatus of this embodiment, since the plate cylinders 1 and 2 and the blanket cylinders 3 and 4 have twice the circumference of the impression cylinder 5, the plate cylinders 1 and 2 and the blanket cylinder 3 The impression cylinder makes two rotations each time 4 makes one rotation. Therefore, when the impression cylinder 5 makes two rotations while holding the printing paper, multicolor printing of a total of four colors, two colors each, can be performed from the first and second plate cylinders 1 and 2.

The dampening solution supply means 8 is arranged in two sets for each of the plate cylinders 1 and 2 at the first and second printing positions. On the other hand, a dampening solution can be supplied selectively. The dampening water supply means 8 includes a watercraft storing the dampening water, and a dampening water roller group that pumps up the dampening water in the watercraft and transfers it to the printing plate surface.
At least one of the dampening solution rollers that comes into contact with the printing plate surface is configured to come into contact with or separate from the plate cylinder surface by a cam mechanism (not shown). If the printing plate does not require dampening water, the dampening water supply means 8 is not required.

The ink supply means 9 is arranged in two sets for each of the plate cylinders 1 and 2 at the first and second printing positions, and is selected for two printing plates on each plate cylinder 1 and 2. Ink of different colors can be supplied. For example, in this embodiment, K (black) and M (magenta) ink supply means 8 are arranged for the first plate cylinder 1 and C for the second plate cylinder 2. The color (cyan) and Y (yellow) ink supply means 8 are arranged.

The ink supply means 9 comprises an ink fountain means for storing ink and an ink roller group for kneading the ink fed from the ink fountain means. The cam mechanism (not shown) is configured to contact or separate from the plate cylinder surface.

Some of the dampening solution supply means 8 and the ink supply means 9 are configured so as to be able to be evacuated from the path of movement as the first and second plate cylinders 1 and 2 move. .

The paper feeding section 10 takes out printing paper one by one from a pile of unused printing paper and transfers it to the paper feeding cylinder 6. In this embodiment, the paper feeding cylinder rotates twice. It operates to supply the printing paper once every time. The paper discharge unit 11 receives printed paper from the paper discharge cylinder 7 and stacks it.

Next, the plate making mechanism of the printing apparatus will be described. In this printing apparatus, when performing a plate making operation, the first and second plate cylinders 1 and 2 are alternately moved to an image recording position. At this image recording position, a friction roller (not shown) is directly or indirectly abutted against the plate cylinder and is configured to rotate.

The printing plate supply unit 12 includes a cassette roll for storing the unexposed printing plate in a light-shielded state, a transport roller and a transport guide for transporting the drawn printing plate to the plate cylinders 1 and 2, and the printing plate. Cutting means for cutting the sheet into a sheet shape. In this embodiment, a silver salt sensitizing material that exposes and records an image by laser light is used as a printing plate, but a thermal type printing plate that is melted or ablated by laser light, for example, may be used.

The printing plate supply operation procedure is as follows. First, the leading end of the printing plate pulled out from the cassette roll is clamped by gripping means (not shown) of the plate cylinders 1 and 2, and in this state, the plate cylinders 1 and 2 are rotated. Then, the printing plate is wound on the plate cylinders 1 and 2,
Thereafter, the printing plate is cut at a predetermined length, and the rear end of the printing plate is held by the other holding means.

The image recording section 13 turns on / off the laser light.
Exposure is performed on the printing plate by f to record an image. The image recording unit 13 scans the laser beam emitted from the laser light source based on image data in the axial direction of the plate cylinder by a deflecting unit such as a polygon mirror. Thus, an image can be recorded on a printing plate. Alternatively, one or more laser irradiating means are arranged in line along the axial direction of the plate cylinder, and the laser irradiating means is moved in parallel along the axial direction of the plate cylinder while scanning while rotating the plate cylinder. You may.

The developing section 14 develops the printing plate exposed by the image recording section 13. In this embodiment, the developing unit 14 has a configuration in which a processing liquid stored in a processing tank (not shown) is pumped up by an application roller and applied to a printing plate to perform a developing process. And a lifting means (not shown) which moves to a position close to the plate cylinder. If an image recording method that does not require a developing process is adopted, the developing unit 14 may be omitted.

The printing plate discharge section 15 is a device for discharging the printing plate used for printing, and includes a peeling means for peeling the printing plate from the plate cylinder at the image recording position, and transports the peeled printing plate. The printer includes a transport unit and a discharge cassette that discharges the transported used printing plate.

The image pickup section 16 reads an image or a color chart on a print sheet to be discharged. In the present embodiment, the image pickup section 16 has an RGB line sensor provided along the width direction of the print sheet. An image on the printing paper can be taken line-sequentially as the paper is transported. The image data read by the imaging unit 16 is subjected to image processing by the print control unit 17, and measurement data such as the color shift amount and the color density of the printed matter is calculated. Then, based on the measurement data, the mechanism of each part of the printing apparatus is controlled to perform registration and adjustment of the ink supply amount.

In this printing apparatus, the first and second plate cylinders 1 and 2 are moved to the image recording position, and the printing plate is supplied, the image is recorded and developed, and the plate making operation is performed. When the plate making operation is completed, the first and second plate cylinders 1 and 2 can be arranged at the first and second printing positions, respectively, to perform the printing operation.

Next, the print control unit 17 shown in FIG. 2 and the image data creating apparatus 20 which creates image data to be used for recording a printing plate in the preceding stage of the printing apparatus will be described.

The image data creating apparatus 20 includes computer system hardware including display means such as a monitor, input means such as a keyboard and a mouse, storage means such as a hard disk, and communication means connected to a LAN or the like. The hardware is constituted by software programmed to function as an image data creating device.

As shown in FIG. 2, when viewed functionally, the image data creation device 20 creates and edits image data representing an image to be printed. A RIP processing unit 22 that converts the image data into binary image data D1; and a band area that stores image data corresponding to the band area S (hereinafter, referred to as band area data for distinguishing from image data of an image to be printed). A data storage unit 23, a band region specifying unit 24 for specifying a color of the band region S, a band region data reading unit 25 for reading band region data D2 of the specified color, and the RIP-completed image data D1. And a transmission unit 27 that transmits the read image data D3 to the printing apparatus.

The image data input editing unit 21 is provided with another DTP
The user inputs image data created by a device or the like, edits the image data, and sets printing conditions as necessary. RI
The P processing unit 22 performs RIP processing (raster-i) for converting multi-valued image data into image data D1 on a binary bitmap.
mage-processing).

The band area data storage unit 23 is constituted by storage means such as a hard disk, and stores a plurality of band area data in advance as binary data. For example, it is conceivable to store the band area S set for each color in combination with other marks such as a color chart area as band area data. Also, a plurality of the band regions S having different shapes and sizes may be stored as appropriate.

The band area designating section is for the operator to manually set the color, size, etc. of the band area S to be added. In this embodiment, at least the color of the band region S may be set, and the size or the like may be a predetermined fixed value. When the operator determines the color of the band area S, it is preferable that the image data is displayed on a display device such as a monitor so that the image data can be referred to.

The band area data reading section 25 reads band area data D2 relating to the band area specified by the band area specifying section 24 from the band area data storage section 23, and sends it to the next synthesizing section 26.

The synthesizing section 26 synthesizes the band image data D2 with the binary image data D1. In this case, the image data D3 may be created by adding the band area data D2 to the trailing edge of the image data D1. As a result of the addition, the size of the combined image data D3 may be too large to fit on the printing plate. In this case, when an error alarm is issued and the operator specifies the band area S again, the protruding band area S
With regard to, there is a case where recording on a printing plate is not performed, a case where a plurality of band areas S are arranged in an overlapping manner, and the like.

The transmitting section 27 is provided for the printing control section 17 of the printing apparatus.
Is transmitted to the image data D3. Regarding the transmission of the image data D3, the data may be transmitted at once, or may be transmitted by being divided as appropriate. Further, the corresponding image data D3 may be transmitted in response to an instruction from the print control unit 17.

The printing control section 17 of the printing apparatus receives the image data D 3 transmitted from the transmitting section 27 and sends it to the image recording section 13. Then, the image recording unit 13 records a printing plate based on the image data D3.

Next, the procedure for adding a band area S according to the present invention will be described with reference to the flowchart of FIG. First, in step S1, the operator selects a color for specifying the band area S. For this selection, one to four colors are designated from any of CMYK. Of course, when the addition of the band area is not performed, the specification may be omitted. It is preferable that the color of the image relating to the image data be displayed on a monitor or the like so that the operator can easily determine the color.

At this time, if necessary, the short side size of the band region S may be input, and the position where the band region S is added may be set. When a plurality of band areas S are specified, the arrangement order, the presence or absence of overprinting, and the like may be set. In the case of a flat screen, the density% may be set.

In step S2, the band area data reading section 25 reads the band area data stored in advance in the band area data storage section 23 according to the designated condition. Then, in the next step S3, the image data is combined with the image data of the image to be printed. In step S4, the combined image data is sent to the printing device, and the image is recorded on the printing plate.

In the above embodiment, when the operator specifies a color, band area data corresponding to the color can be easily added, thereby preventing emulsification of the ink.

[Other Embodiments] (1) In the above embodiment, the printing apparatus and the image data creating apparatus are separately illustrated, but the printing apparatus including both of them may be integrated. Good.

(2) In the above embodiment, the band area S is added by the image data creating device 20 at the preceding stage of the printing device. However, the band region S is added by the printing control unit 17 of the printing device. You may.

(3) In the above embodiment, the printing apparatus using the dampening solution has been described. However, since emulsification is promoted by ink kneading in contact with air, the present invention is also applied to a printing apparatus using no dampening solution. it can.

(4) The band region S may be provided so as to consume ink substantially along the printing width direction.
FIG. 5 is an explanatory diagram showing various band areas S. For example, FIG.
(A) is an example in which a plurality of divided areas are provided along the print width direction. FIG. 5B shows an example in which the divided regions are arranged in a zigzag pattern but substantially along the printing direction. FIG. 5C is an example in which a band region to be represented in one line is divided into a plurality of regions, and is substantially equivalent to the band region S provided along the printing width direction. FIG. 5C is an example in which the band region S is configured by characters, symbols, and the like. In addition to characters and symbols, flat screens and other solid line drawings may be added. Characters and symbols may be recorded with meaningful print information and the like.

(5) In the above embodiment, the band area data is stored in advance in the band area data storage unit 23 as binary data, but the image data input editing unit 21 creates an image relating to the band area S. The image forming the printed matter may be superimposed on the above, and then the RIP processing unit 22 may perform the RIP processing. However, the process is easier if the band area data is stored in advance in the form of binary data and then synthesized.

[0081]

According to the present invention, if the operator designates a color, the corresponding band area data can be easily added, whereby the emulsification of the ink can be easily prevented without performing complicated control. be able to.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of a printing apparatus according to the present invention.

FIG. 2 is a block diagram according to the printing apparatus and the image data creating apparatus.

FIG. 3 is a flowchart showing a procedure for adding a band area S;

FIG. 4 is an explanatory diagram of a band area on printing paper.

FIG. 5 is an explanatory diagram showing another form of the band area S.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st printing cylinder 2 2nd printing cylinder 3 1st blanket cylinder 4 2nd blanket cylinder 5 Impression cylinder 6 Paper supply cylinder 7 Discharge cylinder 9 Ink supply means 11 Discharge part 13 Image recording part 17 Printing control Unit 20 image data creation device 21 image data input / editing unit 22 RIP processing unit 23 band region data storage unit 24 band region designation unit 25 band region data reading unit 26 combining unit 27 transmitting unit D1 image data D2 band region data D3 Image data IM image P Printing paper S band area

Continued on the front page F term (reference) 2C034 AA12 AA42 BB03 BB43 2C250 DB02 EA03 EA22 EB50 2H084 AA25 AA30 AA38 AE05 AE06 AE10 BB02 BB04 BB13 CC05

Claims (23)

[Claims] A printing plate recording device for recording an image on a printing plate based on image data, wherein the printing device supplies ink to the printing plate on which the image is recorded and performs printing by an operator. , Select a predetermined color from the print colors
Designation means for designating four to four colors; and a band for recording a band area along a print width direction in a print margin in a top-to-bottom direction when recording an image of a color designated by the designation means on a printing plate. Printing, comprising: band area data preparing means for preparing area data; and image recording means for recording an image and a band area side by side on a printing plate based on the image data and the band area data. apparatus. 2. The method according to claim 2, wherein the designation of the color by the designation means is performed by YMC.
One of the four colors of K or one of the three colors of YMC
The printing apparatus according to claim 1, wherein three or three colors are designated. 3. The printing apparatus according to claim 1, wherein the band area comprises a solid area or a flat halftone area for consuming a predetermined amount or more of ink. 4. The band area data preparing means includes: band area data recording means storing band area data relating to one or more predetermined band areas; and corresponding band area data from the band area data recording means. 4. The printing apparatus according to claim 1, further comprising: a band area data reading means for reading. 5. The image processing apparatus according to claim 1, further comprising image data combining means for combining the image data and the band area data, wherein the image recording means records based on the combined image data. The printing device according to any one of the above. 6. The designating means, in addition to the designation of the color,
The printing apparatus according to claim 1, wherein a short side size of the band area can be set. 7. The apparatus according to claim 1, wherein the long side size of the band area is substantially equal to one of a recording width of an actually recorded image and a maximum recordable width. The printing device according to the above. 8. The printing apparatus according to claim 1, wherein the band area is provided on the trailing side of the printing paper. 9. The printing apparatus according to claim 1, wherein the band areas are arranged in parallel for each color without being overlapped. 10. The short side of the band area is at least 5 m.
The printing device according to any one of claims 1 to 9, wherein the printing device has a width of m. 11. A printing apparatus according to claim 1, further comprising display means for displaying a color of an image based on the image data so that an operator can visually recognize the color. 12. An image data creating apparatus used in a printing plate recording apparatus for recording an image on a printing plate, wherein a predetermined color is selected from among printing colors by an instruction of an operator.
Designation means for designating four to four colors; and band area data preparation for preparing band area data for recording a band area in the print margin in the top-to-bottom direction along the print width direction for the color designated by the designation means. Means for combining the image data and the band area data; and transmission means for transmitting the combined image data to the printing plate recording apparatus. 13. The color designation by the designation means is YM
13. The image data creating apparatus according to claim 12, wherein one of three colors of CK or one to three of three colors of YMC is designated. 14. The image data creating apparatus according to claim 12, wherein the band area comprises a solid area or a flat halftone area for consuming a predetermined amount or more of ink. 15. The band area data preparing unit includes: a band area data recording unit that stores band area data relating to one or more predetermined band areas; and a corresponding band area data from the band area data recording unit. 15. The image data creating apparatus according to claim 12, comprising: band area data reading means for reading. 16. The method according to claim 1, wherein the designation unit is capable of setting a short side size of the band area in addition to the designation of the color.
16. The image data creation device according to any one of 2 to 15. 17. The printing apparatus according to claim 12, wherein the long side size of the band area is one of a recording width of an actually recorded image and a recordable width of a target printing plate. An image data creation device according to any one of the above. 18. The image data creating apparatus according to claim 12, wherein the band area is provided on the trailing side of the printing paper. 19. The apparatus according to claim 12, wherein the band areas are arranged in parallel for each color without being overlapped. 20. A short side of the band region is at least 5 m.
20. The device according to claim 12, having a width of m.
The image data creation device according to any one of the above. 21. A printing plate recording apparatus for recording an image on a printing plate based on image data, wherein a predetermined color is selected from among printing colors by an instruction of an operator.
Designation means for designating four to four colors; and a band for recording a band area along a print width direction in a print margin in a top-to-bottom direction when recording an image of a color designated by the designation means on a printing plate. Band area data preparing means for preparing area data; and image synthesizing means for synthesizing the image data and the band area data. The image and the band area are formed on a printing plate based on the synthesized image data. A printing plate recording device that records side by side. 22. The color designation by the designation means is YM
22. The printing plate recording apparatus according to claim 21, wherein one of three colors of CK or one to three of YMC is designated. 23. The printing plate recording apparatus according to claim 21, wherein the band area is formed of a solid area or a flat halftone area for consuming a predetermined amount or more of ink.