JPH11271984A - Method and device for supplying and ejecting printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a plate supplying and ejecting mechanism and to shorten time required for making a plate. SOLUTION: This plate supplying and ejecting device 100 is provided with a printing plate attracting unit 116 on a printing plate loading part 24 side and a printing plate attracting unit 132 on a temporary accumulation part 42 side. The units 116 and 132 are integrally moved by an air cylinder 108. Thus, a mechanism for moving the units 116 and 132 is simplified. The printing plate P is smoothly ejected from a printing surface plate 210 and smoothly supplied to the plate 210.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material printing apparatus for printing an image recorded on an original film onto a printing plate such as a photosensitive lithographic printing plate. The present invention relates to a plate feeding / discharging device.

[0002]

2. Description of the Related Art In newspaper printing or the like, a P (photosensitive layer) having a photosensitive layer formed on the surface of a thin plate (eg, about 0.3 mm) of aluminum or the like is used.
A photosensitive lithographic printing plate called an S plate or the like (hereinafter, referred to as a “printing plate”) is used. In order to form a printing plate from this printing plate, in a printing apparatus that prints an image onto the printing plate, the printing plate stacked and loaded on the skid is placed on a printing platen and positioned. Further, an original film such as a negative film is placed and positioned on the printing plate.
Thereafter, the original film is brought into close contact with the printing plate and irradiated with light from a light source to print the image recorded on the original film onto the printing plate.

When printing of an image on a printing plate placed on a printing platen is completed, the printing plate is discharged from the printing platen, and a printing plate for printing a new image on the printing platen is supplied. .

In general, a plate material printing apparatus is provided with a plate feeding apparatus for supplying a printing plate to a printing plate and a plate discharging apparatus for taking out the printing plate from the printing plate and discharging the printing plate. When the image printing on the printing plate is completed, the printing plate is taken out by the plate discharging device, and the printing plate is supplied by the plate feeding device.

[0005] Further, a plurality of images are printed on the printing plate. When image printing of one area on the printing plate is completed, the printing plate is moved on the printing platen,
After repositioning, image printing is performed.

[0006]

However, since the moving range of the plate feeding device and the moving range of the plate discharging device overlap on the printing platen, it is necessary to prevent the respective operations from interfering with each other. For this reason, it is necessary to accurately control the plate feeding device and the plate discharging device in accordance with the printing operation, and there is a problem that it takes time for the plate feeding and discharging to reliably operate. Further, the plate feeding and discharging mechanism is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and proposes a printing plate supply / discharge method and a plate supply / discharge device capable of shortening a plate making time and simplifying a plate supply mechanism. With the goal.

[0008]

The invention according to claim 1 is
The image recorded on the original film is printed onto a plurality of image printing areas arranged in the longitudinal direction or the width direction of the printing plate supplied and placed on the printing platen of the printing unit, and discharged from the printing platen. A printing plate supply / discharge method, wherein when a printing plate taken out of a plate supply unit adjacent to the printing unit is moved onto the printing platen to be placed on the printing platen, image printing is performed. After the printing, the printing plate taken out of the printing plate is simultaneously moved to the downstream side in the plate feeding direction and discharged.

According to the present invention, the printing plate is supplied to the printing platen by matching the plate feeding direction of the printing plate from the plate supply unit to the printing platen with the plate discharging direction of discharging the printing plate from the printing platen. Conveyance and discharge of the printing plate taken out from the printing platen are performed simultaneously.

[0010] This makes it easier to control the transport mechanism during plate feeding and discharging. In addition, the movement mechanism for supplying the printing plate to the printing platen and the movement transition for discharging the printing plate from the printing platen can be combined into one, thereby simplifying the movement mechanism at the time of plate feeding and discharging. Can be planned.

According to a second aspect of the present invention, the printing plate is movably arranged between a plate feeding / discharging position and an image printing position for printing an image on a predetermined area of a printing plate placed on the printing plate. In addition, the plate feeding / discharging position of the printing platen is an image printing position of one of a plurality of image printing regions of the printing plate.

According to the present invention, instead of moving the printing plate on the printing platen, the printing platen on which the printing plate is positioned is moved so that each of the plurality of image printing regions on the printing plate is moved. At the image printing position. Also,
The plate supply / discharge position is set to be one image printing area on the printing plate.

[0013] This eliminates the need for positioning the printing plate on the printing platen once, and eliminates the need to move and position the printing plate every time an image is printed on each of a plurality of areas of the printing plate. Plate making time can be reduced.

The invention according to claim 3 is characterized in that the plate feeding / discharging position of the printing platen is a final image printing position on the printing plate.

According to the present invention, the position at which the final image is printed on the printing plate is set to the position for supplying and discharging the printing plate to the printing platen. This makes it possible to position the printing plate on the printing platen while moving the printing plate supplied to the printing platen to the first image printing position, thereby further shortening the plate making time. .

According to a fourth aspect of the present invention, there is provided a plate feeding / discharging device for supplying a printing plate onto a printing plate provided in a printing unit and discharging the printing plate after image printing from the printing plate. Plate-supply holding means for lifting and holding the printing plate stacked on the plate-supply portion provided adjacent to the printing portion; and on the printing platen when discharging the printing plate from the printing platen. Plate-holding means for lifting and holding the placed printing plate; and moving the plate-holding means and the plate-discharge holding means together to move the printing plate held by the plate-supply holding means onto the printing platen. Moving means for discharging the printing plate held by the plate discharging holding means from the printing platen.

According to the present invention, the plate supply holding means and the plate discharge holding means are moved by the same moving means. Thereby, the moving mechanism of the plate feeding means and the plate discharging means can be integrated into one, and it is not necessary to synchronize when moving the plate feeding holding means and the plate discharging holding means. As a result, the control mechanism can be simplified.

Incidentally, the plate feed holding means and the plate discharge holding means may be provided with an auxiliary moving means for relatively moving the printing plate held with respect to the moving means. As a result, the printing plate can be supplied to the printing platen from an arbitrary position while simultaneously supplying and discharging the plate onto the printing platen, and the printing plate on the printing platen can be discharged to an arbitrary position. Can be.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a flow of processing in a printing plate printing apparatus 10 applied to the present embodiment. Plate printing equipment 1
0 is a film loading unit 12 at the center of the frame (not shown).
A document film (hereinafter referred to as “negative film N” as an example) is provisionally positioned and loaded on a tray (not shown) based on punch holes, sizes, and the like.

A sticking section 14 is provided adjacent to the film loading section 12, and the negative film N is taken out of the tray and sent to the sticking section 14, where a punch hole or a registration mark is formed. After being positioned based on an index that accurately indicates the image position such as, for example, it is attached to a negative bar 16 formed of, for example, a band-shaped metal body. The negative film N affixed to the negative bar 16
Is sent to the printing unit 20 via

On the other hand, a photosensitive lithographic printing plate (hereinafter referred to as “printing plate P”) on which an image is printed by the printing plate printing device 10 is:
It is loaded into the printing plate loading section 24 in a state of being stacked on the skid 22, taken out of the uppermost layer, sent to the printing section 20, and placed on a printing platen 210 arranged in the printing section 20. Positioned.

On the printing plate P positioned on the printing platen 210, the negative film N transported from the standby section 18 to the printing section 20 is placed at a predetermined position and positioned.
By irradiating light from a light source (not shown) in this state, the image recorded on the negative film N is printed on the printing plate P.

The printing plate P on which the image is printed is printed by a printing unit 2.
When it is taken out from 0, it is sent to the temporary accumulating section 42, and is sent from the temporary accumulating section 42 to the next process. Further, the negative film N for which image printing has been completed is transported to the peeling section 26, peeled from the negative bar 16, and discharged.

Here, the negative film N processed by the printing plate printing apparatus 10 applied to the present embodiment will be described.

As shown in FIGS. 2A to 2C, the negative film N has a one-page size in which the image 32 of one page of the newspaper is recorded, and a one-page spread of the newspaper (newspaper). A spread size (newspaper 2) on which an image 34 of two pages is recorded.
Page size).

As shown in FIG. 2A, a negative film N having a register mark 28A, 28B as a reference indicating an image area 32A in which an image 32 is recorded is referred to as a negative film N having a one-page size of a newspaper. And "Negative film N1" when specifying), and as shown in FIG.
There is a negative film in which punch holes 30A and 30B are perforated (hereinafter, referred to as "negative film N2" when specified). FIG. 2 shows a double-page spread negative film N.
As shown in (C), a negative film N in which an image 34 is recorded in an image area 34A corresponding to two pages of newspapers and registration marks 28A and 28B are recorded in accordance with the image area 34A.
(Hereinafter, referred to as “negative film N3”) and a negative film N having punched holes 30A and 30B (hereinafter, referred to as “negative film N”).
4 ").

As shown in FIG. 2A, the register mark 28A of the negative film N1 applied to the present embodiment is located on the top side of the negative film N1 in the top and bottom direction (the direction of arrow H; hereinafter, the arrow H in each drawing). ) Is recorded in a cross shape at a substantially middle portion in the width direction. The registration mark 28B is recorded as a line extending in the vertical direction at a substantially middle portion in the width direction on the ground side of the negative film N1.

As shown in FIG. 2B, the negative film N
The second punch hole 30A is formed, for example, as a round hole on the top side in the vertical direction of the negative film N2.
For example, the longitudinal direction is formed as a long hole along the vertical direction on the ground side in the vertical direction.

The punch holes 30A and 30B are located at one end (FIG. 2) from the center in the width direction of the image area 32A of the negative film N2.
((B), left side of the paper surface), which is greatly shifted from the position where the register marks 28A, 28B are recorded.

As shown in FIG. 2C, on the negative film N3, one of the two newspaper image areas arranged in the width direction corresponds to one newspaper image area. The registration marks 28A and 28B are recorded in accordance with the registration marks 28A and 28B of the negative film N1. The negative film N4 includes one newspaper 1 in the image area 3A for two pages of the newspaper.
In correspondence with the image area 32A of the page, the negative film N2
Punch holes 30A, 30B,
30B is drilled.

In FIG. 2C, the negative film N4
Is indicated by a code in parentheses. Further, as shown in FIGS. 2A to 2C, the images 32 and 34 recorded on the negative film N together with the date column 35A and the register mark 35B are Y, M, C, and BK. A color ball 35C or the like indicating which color of the image is recorded.

On the other hand, in the printing plate printing apparatus 10, FIG.
The image of the negative film N attached to the transparent rectangular attachment sheet S shown in FIG. One or two sheets of negative film N of one page size of newspaper can be pasted on this pasting sheet S side by side along the width direction, and one sheet of negative film N of spread size can be pasted. it can.

When two sheets of the negative film N are stuck to the sheet S, a punch hole 36A is formed in one of the peripheral edges on both sides in the width direction of the negative film N.
On the other hand, a punch hole 36B is formed. The negative film N has images 32 and 34 for the punch holes 36A and 36B.
Is attached to the attachment sheet S such that the position is at a predetermined position. FIG. 2D shows a state in which two negative films N each having a size of one page of newspaper are pasted on the pasting sheet S. In the case of one negative film N, one of the negative films N is left open. Can be

The negative film N and the pasted sheet S are provisionally positioned on a punch hole 30A, 30B, 36A, 36B or a tray (not shown) based on the size. In the pasting section 14, the registration marks 28A, 28B or Accurate positioning is performed using the punch holes 30A, 30B, 36A, 36B.

On the other hand, as shown in FIGS. 1 and 3A, the printing plate printing apparatus 10 has a printing plate P1 of 2L1W size (FIG. 1) capable of printing images 32 of one page of a newspaper vertically. 1, 3 (B) and 3 (C).
As shown in FIG. 1, a printing plate P2 of 2L2W size that can be printed by arranging images 32 for one page of newspaper vertically and horizontally or images 34 of one page spread vertically (indicated by a two-dot chain line in FIG. 1) Can be loaded. In addition, the printing plate P1,
In the case of P2, the negative film N is baked so that the longitudinal direction is the vertical direction. That is, the printing plate P1 is printed with the image 32 for one newspaper page on the top side and the ground side, and the printing plate P has the image 32 for two newspapers or one page spread on the top side and the ground side, respectively. The minute image 34 is printed.

When printing an image on the printing plate P1, a negative film N1, N2 or a pasting sheet S on which a negative film N of one page size of a newspaper is pasted is used.
When printing an image on the printing plate P2, the negative films N1 and N2 each having a size of one page of a newspaper are loaded side by side.
A negative film N3, N4 having a size of two pages of newspaper or a pasting sheet S on which images of two pages of newspaper are arranged and pasted are used.

As shown in FIGS. 4 and 5, in the printing plate printing apparatus 10, the printing plate loading section 24 and the temporary stacking section 42 are arranged in the machine frame 40 with the printing section 20 interposed therebetween. The printing plate loading unit 24, the printing unit 20, and the temporary accumulating unit 42 are arranged along one end of the printing plate printing apparatus 10.

As described above, the printing plate loading section 24 is loaded with the skid 22 in which many printing plates P are stacked.
The skid 22 is loaded such that one end of the printing plate P in the width direction is adjacent to the printing unit 20.

The printing plate loading section 24 is provided with a sheet feeding mechanism 48 in which a plurality of suction cups 46 are attached to a frame 44, and is driven by an air cylinder 50 (see FIG. 5).
When the frame 44 is lowered, the printing plate P is sucked by the suction cup 46. Thereafter, the printing plate P on the outermost layer is taken out from the skid 22 by raising the frame 44. The printing plate loading unit 24 includes the printing unit 2.
The printing plates P1 and P2 are loaded so that the positions of the ends on the 0 side coincide. Further, the sheet-feeding mechanism 48 uses all the suction cups 46 when sucking the printing plate P2, and sucks using the suction cup 46 on the printing unit 20 side when sucking the printing plate P1.

The printing plate P taken out by the sheet-feeding mechanism 48 is placed on a temporary placing table (not shown) protruding above the skid 22 and then conveyed to the printing unit 20.

On the other hand, a temporary placing table 52 is provided in the temporary collecting section 42 so as to be able to protrude and retract, and the printing plate P for which image printing has been completed is placed on this temporary placing table 52. Thereafter, the printing plate P is sent out by an unillustrated sending-out mechanism to an unillustrated automatic developing device provided as a next process of the plate material printing apparatus 10.

The temporary placing table 52 has a plurality of bars 56 spanned at a predetermined interval between a pair of chains 54, for example, and the printing plate P is placed so as to span the bars 56. . Further, the temporary stacking unit 42 can be loaded with a temporary stacking cart 58 below the temporary placing table 52, and by driving the chain 54 to move the bar 56 to one end side, the upper side of the temporary stacking cart 58 is raised. It is released and the temporary accumulation cart 58
The printing plate P is mounted on the mounting table 60.

The printing section 20 is provided with a printing platen 210 on which the printing plate P is placed when printing an image recorded on the negative film N. As shown in FIG.
The printing platen 210 is formed in a long rectangular flat plate shape, and is arranged so that the longitudinal direction is along the vertical direction of the negative film N. The printing platen 210 is large enough to mount a large-sized printing plate P2.

The printing platen 210 is provided with two positioning pins 212 at one end in a direction (width direction) orthogonal to the longitudinal direction and a positioning pin 214 at one end in the longitudinal direction. The positioning pins 212 are attached to the printing platen 210.
Are arranged along the longitudinal direction of the
Each of the reference numerals 2 and 214 is normally accommodated in the printing platen 210, but protrudes from the upper surface of the printing platen 210 by operation of a driving means such as an air cylinder (not shown).

The printing plate 210 includes positioning pins 212.
A pair of pusher pins 216 is provided at
And a pair of pusher pins 21 at the other end in the width direction.
8 are provided. Further, the printing platen 210 is provided with a pusher pin 220 on the other end side in the vertical direction so as to face the positioning pin 214.

Each of the pusher pins 216 and 218 is arranged along the vertical direction of the printing platen 210 and is usually accommodated in the long holes 222 and 224. When each of the pusher pins 216 and 218 protrudes from the long holes 222 and 224 formed in the printing platen 210 onto the printing platen 210, the pusher pins 216 and 218 pass through the long holes 222 and 224 in the width direction of the printing platen 210. Along the positioning pin 212 side.

The pusher pin 220 is attached to the printing platen 2.
10 is housed in a long hole 226 formed in
When projecting from the long hole 226 onto the printing platen 210, the inside of the long hole 226 is moved toward the positioning pin 214 along the longitudinal direction of the printing platen 210.

The printing plate P is placed at a position where one end in the width direction approaches the positioning pin 212 and one end in the longitudinal direction approaches the positioning pin 214. As a result, a printing plate P having a size of two pages in a newspaper vertical
1 is a positioning pin 212, 214 and a pusher pin 2
16, 220 in the area surrounded by newspapers
The page-sized printing plate P2 is provided with positioning pins 212 and 214.
And the pusher pins 218, 220.

In the printing unit 20, when the printing plate P1 is placed on the printing platen 210, the positioning pins 212 and 214 are made to protrude, and the pusher pins 216 and 220 are made to protrude to the positioning pins 212 and 214, respectively. Move. As a result, the printing plate P1 is pressed and moved on the printing platen 210 by the pusher pins 216 and 220, and comes into contact with the positioning pins 212 and 214. In addition, printing section 2
0, when the printing plate P2 is placed on the printing platen 210, the positioning pins 212 and 214 are made to protrude.
The pusher pins 218 and 220 are protruded and moved toward the positioning pins 212 and 214, respectively. This allows
The printing plate P2 is placed on the printing platen 210 by the pusher pin 21.
8 and 220 to move the positioning pin 21
2, 214.

Each of the printing plates P1 and P2 comes into contact with the positioning pin 214 at one end along the vertical direction and the two positioning pins 212 at the one end along the width direction, so that the printing platen is formed. Positioned on 210.

In the printing section 20, rails 228 are arranged in pairs on both sides in the width direction of the printing surface plate 210. Rail 2
28 is provided along the longitudinal direction of the printing platen 210.

On the other hand, brackets 230 and 232 are attached to both sides of the printing platen 210 in the longitudinal direction.
The bracket 230 is provided on the ground side of the negative film N along the top and bottom direction, and the bracket 232 is provided on the top side. A slider 234 is attached to each of the brackets 230 and 232.
4 is engaged with the rail 228. Thus, the printing platen 210 is supported by the rail 228 so as to be movable along the vertical direction of the negative film N.

On the lower surface of the printing platen 210, a rib 2 is provided.
The tip of a rod 238A of an air cylinder 238 is connected to the rib 236.
The air cylinder 238 is disposed parallel to the rail 228, and the air cylinder 238 is driven to drive the rod 238A.
By moving the moving platen 210 on the rail 22
Move along 8.

The rail 228 is provided with stoppers 240 and 242 facing the bracket 230, respectively. The stopper 240 is provided at an end of the rail 228 on the ground side, and the stopper 242 is arranged at an intermediate portion of the rail 228. In the printing platen 210, the bracket 230 abuts against the stopper 240 on the ground side, so that the top side of the printing plate P positioned and mounted on the upper surface faces a light source unit for printing (not shown), and the bracket 230 is Stopper 2
The ground side of the printing plate P is opposed to the light source section by contacting the printing plate P.

That is, the air cylinder 238 is
The top side of the printing plate P is positioned at the image printing position by extending the 38A, and the ground side of the printing plate P is positioned at the image printing position by the air cylinder 238 contracting the rod 238A. Further, the moving position of the printing platen 210 in which the ground side of the printing plate P is the image printing position is
The printing plate P is supplied to and discharged from the printing platen 210.

In the printing plate printing apparatus 10, when the printing plate P is placed at the plate feeding / discharging position, first, the printing platen 210 is moved so that the top side of the printing plate P is positioned at the image printing position.
Thereafter, the printing platen 210 is returned so that the ground side of the printing plate P is positioned at the image printing position.

The printing plate P positioned on the printing platen 210 has a negative film N at a printing position facing the light source section.
Is placed and positioned. Thereafter, a squeezing process is performed to bring the negative film N into close contact with the printing plate P, and image printing on the printing plate P is performed. A suction groove (not shown) is formed on the upper surface of the printing platen 210, and the negative film N is brought into close contact with the printing plate P by holding the positioned printing plate P and negative film N by suction.

As shown in FIGS. 4 and 5, the plate printing apparatus 10 is provided with a plate feeding / discharging device 100 extending from the printing plate loading section to the temporary accumulating section 42.

As shown in FIGS. 4, 5 and 7, the plate feeding / discharging device 100 has a rail 102 arranged so as to straddle the printing plate loading section 24 and the temporary stacking section 42. As shown in FIG. 4, the rail 102 is mounted on the machine frame 40 of the plate printing apparatus 10.
Attached to the side end. On this rail 102,
A plurality of sliders 104 are mounted, and the sliders 104 are mounted on the lower surface of a band-shaped base body 106.

On the other hand, as shown in FIGS. 5 and 7, an air cylinder 108 is arranged above the base body 106. The air cylinder 108 is mounted on the rail 102
Along with the drive block 110 and the rail 102
Is a rodless cylinder that moves along. The drive block 110 of the air cylinder 108 is connected to a longitudinally intermediate portion of the base body 106 via a bracket 110A (see FIG. 7). Thus, when the air cylinder 108 is driven, the base body 106 moves above the end (top end) of the printing section 20 along the rail 102.

As shown in FIGS. 4, 5 and 7, an air cylinder 112 is provided at the end of the base body 106 on the printing plate loading section 24 side, and bearings are provided on both sides of the air cylinder 112. 114 is attached. As shown in FIGS. 5 and 7, in the air cylinder 112, a base plate 118 of a printing plate adsorber 116 is connected to a tip of a rod penetrating the base body 106. A guide rod 120 is movably inserted in the bearing 114 along the axial direction, and a lower end of the guide rod 120 is connected to the base plate 118.

Thus, when the air cylinder 112 is driven, the base plate 118 moves up and down while keeping the horizontal state.

The base plate 106 has a substantially L-shape in which an extending portion 122 is formed from the connecting portion of the air cylinder 112 toward the printing plate loading portion 24 side. A suction cup 124 is provided. The printing plate suction device 116 can suck and hold the printing plate P by these suction cups 124.

On the other hand, an air cylinder 126 is provided at the end of the base body 106 on the side of the temporary accumulating portion 42, and a pair of bearings 128 is mounted on both sides of the air cylinder 126. A guide rod 130 is inserted through each of the bearings 128 so as to be movable in the axial direction.
One end of the rod of the air cylinder 126 and one end of the guide rod 130 are connected to the peripheral edge of the base plate 134 of the printing plate adsorber 132, respectively.

Thus, the base plate 134 of the printing plate suction device 132 is moved up and down by driving the air cylinder 126 while maintaining a substantially horizontal state.

The base plate 134 is formed on a substantially rectangular flat plate, and is provided with a plurality of suction cups 136. The printing plate suction device 132 uses the suction cups 136 to make the printing plate P
Can be absorbed and held.

As shown in FIGS. 5 and 7, stoppers 138 and 140 are disposed near the both ends of the air cylinder 108 so as to face the driving lot 110. Of the drive block 110 is restricted.

The plate feeding / discharging apparatus 100 includes an air cylinder 108
When the drive block 110 of the printing plate abuts against the stopper 138 on the printing plate loading section 24 side,
Reference numeral 24 is located above the longitudinal end of the printing plate P stacked on the skid 22. As a result, the printing plate suction device 116 removes the printing plate P from the skid 22 by the sheet-feed mechanism 48 and placed on the temporary placing table (not shown).
The suction plate 124 sucks the printing plate P by lowering the base plate 118 at this position. Thereafter, the printing plate P is raised by raising the base plate 118.
Is lifted from a temporary placing table (not shown) in a so-called cantilever state.

Further, the suction cup 136 of the printing plate adsorber 132
Is positioned above the longitudinal end of the printing plate P placed on the printing platen 210 moved to the plate feeding / discharging position at the position where the drive block 110 of the air cylinder 108 contacts the stopper 138. Has become. At this position, the air cylinder 126 is driven to lower the base plate 134, so that the suction cup 136 causes the printing plate P on the printing platen 210.
To adsorb. Thereafter, by driving the air cylinder 126 to raise the base plate 134, the printing plate P is lifted from the printing platen 210 in a cantilever state.

The plate feeding / discharging device 100 includes an air cylinder 108.
Drive block 110 is the stopper 14 on the temporary accumulation section 42 side.
0, the suction cup 1 of the printing plate adsorber 116
24 is located above the printing platen 210 moving to the plate feeding / discharging position. Thus, the printing plate P transported from the printing plate loading unit 24 while being sucked and held by the printing plate suction device 116 can be placed at a predetermined position on the printing platen 210.

Further, in the printing plate suction device 132, the suction block 136 is positioned above the temporary placing table 52 of the temporary accumulating section 42 when the drive block 110 of the air cylinder 108 comes into contact with the stopper 140. (Indicated by the two-dot chain line in FIGS. 4 and 5). Thus, the printing plate P sucked and held by the suction cup 136 and taken out from the printing platen 210 can be transferred to the temporary placing table 52 of the temporary accumulating section 52.

That is, the printing plate suction device 116 for plate feeding and the printing plate suction device 132 for plate discharging have the same moving direction at the time of plate feeding and at the time of plate discharging, and move integrally by driving of the air cylinder 108. . Also, as shown in FIG.
A stroke distance X ₁ of the printing plate adsorber 116, the stroke distance X ₂ of the printing plate adsorber 132, the air cylinder 10
8 is the same as the stroke distance X of the drive block 110.

The operation of the present embodiment will be described below. In the printing plate printing apparatus 10, the negative film N is loaded on the tray 38 and the printing plate P is loaded on the printing plate loading unit 24. Thereafter, a negative film such as a size of the printing plate P, an arrangement pattern of an image to be printed on the printing plate P, a size of the negative film N used for image printing, and whether the index is a registration mark or a punch hole from an operation panel (not shown). By inputting information about N, information about printing plate P, and the like,
Start processing.

In the plate material printing apparatus 10, when printing processing is instructed, the negative film N loaded in the film loading section 12 is transported to the sticking section 14 and positioned on a sticking stage (not shown). The negative bar 16 is attached to a predetermined position on the peripheral edge on the ground side.

On the other hand, in the printing plate printing apparatus 10, the processing shifts to the processing of the negative film N, and the printing plate P loaded in the printing plate loading section 24 is taken out by the sheet-feeding mechanism 48. To the printing plate suction device 116 that is moving to the side. Thereafter, the air cylinder 1 of the plate feeding / discharging device 100
08 is moved to move the printing plate adsorber 116, which is holding the printing plate P by the suction cup 124, to the printing unit 20, and places the printing plate suction device 116 at a predetermined position on the printing platen 210 waiting at the plate feeding / discharging position. I do.

In the printing section 20, when the printing plate P is placed on the printing platen 210, the air cylinder 138 is driven to move the printing plate P so that the top side of the printing plate P is at the image printing position. The printing plate P is positioned on the printing plate P.

When the printing plate P is positioned on the printing platen 210 and the printing platen 210 is moved so that the top side of the printing plate P is at the image printing position, the negative film N is moved to the top side of the printing plate P. After positioning, the image recorded on the negative film N is printed on the printing plate P by close contact exposure.

On the other hand, the plate feeding / discharging device 100 holds the printing plate P sucked and held by the printing plate suction device 116 on the printing platen 210.
When the printing plate P is placed on the printing plate P, the printing plate suction unit 116 is moved to the printing plate loading unit 24 by driving the air cylinder 108, and when the image printing on the next printing plate P is instructed, the new printing plate P Is held by suction.

When the image printing on the top side of the printing plate P is completed, the printing unit 20 moves the printing surface plate 210 so that the ground side of the printing plate P is at the image printing position. By this movement, the printing platen 210 is returned to the plate feeding / discharging position.

Thereafter, a negative film N is placed on the ground side of the printing plate P.
And print the image recorded on the negative film N.

As described above, in the printing plate printing apparatus 10, the top side and the bottom side of the printing plate P are positioned at the image printing position by moving the printing platen 210. In the conventional printing plate printing apparatus, since the printing plate P is moved onto the printing platen with the printing plate fixed, the top side and the ground side of the printing plate P are positioned on the printing platen. Was needed.

On the other hand, in the printing plate printing apparatus 10 applied to this embodiment, the printing plate P is moved to the printing platen 210 only once by moving the printing platen 210. I have. Further, in the printing plate printing apparatus 10,
Printing platen 2 so that the top side of printing plate P is at the image printing position
10 is moved, the printing plate P on the printing platen 210 is moved.
Is positioned.

As a result, it is possible to reduce the time from when the printing plate P is placed on the printing platen 210 to when the image printing on the top side and the ground side of the printing plate P is completed.
The plate making operation can be shortened. When printing an image on the ground side of the printing plate P, the printing platen 210 is used.
However, since the printing plate P is returned to the plate feeding / discharging position, there is no need to perform operations such as moving the printing platen 210 or moving the printing plate P on the printing platen 210 when discharging the printing plate P.

On the other hand, the printing plate suction device 132 of the plate feeding / discharging device 100 provided for discharging the printing plate P from the printing platen 210 is connected to the printing plate loading unit 24 by the printing plate suction device 116 for plate feeding. By being moved, it is arranged above the printing platen 210.

When image printing on the printing plate P on the printing platen 210 is completed, the plate feeding / discharging apparatus 100 sucks the printing plate P by the suction cup 136 of the printing plate suction device 132 for plate discharging, and the printing plate P is placed on the printing platen 210. Lift from. Thereafter, the air cylinder 108 is driven to move the printing plate suction device 132 to the temporary
Then, the printing plate P on which the image printing has been completed is discharged from the printing unit 20.

On the other hand, the plate feeding / discharging apparatus 100 moves the printing plate suction device 132 to the temporary accumulating section 42 so that the printing plate suction device 116 for plate feeding on the printing plate loading portion 24 side moves onto the printing platen 210. Moving. Thereby, the printing plate adsorber 116
Is holding a new printing plate P by suction, the printing plate P is supplied to the printing unit 20 and placed on the printing platen 210.

As described above, the plate feeding / discharging device 100 includes the printing plate adsorber 11 for supplying the printing plate P to the printing platen 210.
6 and the printing plate suction device 132 for discharging the printing plate P from the printing platen 210 are moved integrally by the air cylinder 108, so that the printing plate suction device 116 for plate feeding and the printing plate suction device 132 for plate discharge are moved. Does not interfere in the printing section 20.

Further, only by driving the air cylinder 108 in accordance with the image printing process, plate feeding and plate discharging can be performed simultaneously, so that control of plate feeding and discharging to the printing platen 210 can be simplified. . Further, the printing plate adsorber 1
The number of components for moving the plates 16 and 132 can be reduced, and the plate feeding / discharging mechanism can be simplified.

The above-described embodiment does not limit the configuration of the present invention. For example, in the present embodiment, the printing plate suction device 116 and the printing plate suction device 132 are directly attached to the base body 106 and moved integrally.
The printing plate suction devices 116 and 132 may be attached to the base body 106 via a horizontal movement mechanism.

That is, the printing plate adsorbers 116 and 132 are attached to the base main body 106 via horizontal moving means for moving the printing plate adsorbers 116 and 132 horizontally by an air cylinder or the like. Thereby, when the horizontal moving means is further added to the printing plate adsorber 132,
The printing plate P can be discharged to an arbitrary position, for example, the printing plate P can be discharged to an arbitrary position, for example, the printing plate suction device 132 that has absorbed the printing plate P and moved to the temporary accumulation section 42 can be further moved in a desired direction. At the same time, the printing plate P is printed from an arbitrary position on the printing platen 21.
0 can be supplied.

Although the present invention has been described with reference to the printing plate printing apparatus 10 for printing an image recorded on the negative film N onto a 2L1W printing plate P1 or 2L2W printing plate P2, the original film is The present invention is not limited to the negative type, but may be a positive type. The present invention can be applied to plate printing apparatuses of various configurations for processing an original film and a printing plate of an arbitrary size.

[0093]

As described above, according to the present invention, the plate feeding / discharging mechanism can be simplified by moving the plate feeding holding means and the plate discharging holding means integrally by the same moving means. An excellent effect that the control of the plate discharging mechanism becomes extremely easy is obtained. Further, according to the present invention, the plate making time can be shortened by moving the printing platen so that a predetermined area of the printing plate becomes the image printing position.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a process flow of a printing plate printing apparatus according to the present embodiment.

FIG. 2A is a schematic diagram showing a one-page size negative film on which register marks are recorded, FIG. 2B is a schematic diagram showing a one-page size negative film having punched holes, and FIG. FIG. 2D is a schematic view showing a two-page size negative film, and FIG.

FIG. 3A is a schematic diagram showing a printing plate having a two-page size of a newspaper vertically, FIGS. 3B and 3C are schematic diagrams showing a printing plate having a two-page size of a newspaper vertically, and FIG. (C) shows a case where an image of a one-page spread of a newspaper is printed.

FIG. 4 is a schematic view showing a planar arrangement of a configuration relating to processing of a printing plate of the printing plate printing apparatus.

FIG. 5 is a schematic view showing a configuration of a printing plate printing apparatus for processing a printing plate as viewed from one end side in the longitudinal direction of the printing plate.

FIG. 6 is a schematic diagram showing a printing platen according to the present embodiment.

FIG. 7 is a schematic perspective view showing a plate supply / discharge device.

[Explanation of symbols]

 Reference Signs List 10 plate material printing device 20 printing unit 24 printing plate loading unit (plate feeding unit) 42 temporary stacking unit 100 plate feeding / discharging device 102 rail (moving means) 106 base plate 108 air cylinder (moving means) 116 printing plate adsorber (plate feeding) Holding means) 124 suction cup (plate feeding holding means) 132 printing plate suction device (plate discharging holding means) 136 suction cup (plate discharging holding means) 210 printing platen 228 rail 238 air cylinder N negative film (document film) P printing plate

Claims (4)

[Claims] An image recorded on an original film is printed on a plurality of image printing areas arranged in a longitudinal direction or a width direction of a printing plate supplied and placed on a printing platen of a printing unit. A method of feeding and discharging a printing plate discharged from a printing plate, wherein the printing plate taken out from a plate feeding unit adjacent to the printing unit is moved onto the printing platen to be placed on the printing platen. A printing plate feeding / discharging method for printing plates, wherein the printing plate taken out of the printing plate after image printing is simultaneously moved to the downstream side in the plate feeding direction and discharged. 2. A printing plate, wherein the printing plate is movably arranged between a plate feeding / discharging position and an image printing position for printing an image on a predetermined area of a printing plate placed on the printing plate. 2. The printing plate feeding / discharging method according to claim 1, wherein the plate feeding / discharging position is an image printing position of one of a plurality of image printing regions of the printing plate. 3. The printing plate supply / discharge method according to claim 2, wherein the printing plate supply / discharge position of the printing platen is a final image printing position on the printing plate. 4. A plate feeding / discharging device for supplying a printing plate onto a printing platen provided in a printing unit and discharging the printing plate after image printing from the printing platen, wherein the printing plate is provided adjacent to the printing unit. Plate holding means for lifting and holding the printing plate stacked on the plate supply unit provided by the printing unit, and printing placed on the printing plate when discharging the printing plate from the printing plate. Plate discharge holding means for lifting and holding a plate; and moving the printing plate held by the plate supply holding means onto the printing platen by moving the plate supply holding means and the plate discharge holding means together, And a moving means for discharging the printing plate held by the printing plate from the printing platen.