JP2563939Y2 - Color plate inspection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color plate inspection apparatus for obtaining a proofreading material for checking the finish of a printed matter in advance, and more particularly, to a slide type light shielding cover comprising a shutter guide member and a shutter member above a document table. The present invention relates to a color plate inspection device to be provided.

[0002]

2. Description of the Related Art When producing a color print, color proofing (color proof) is sometimes performed at the stage of a document film using a color plate inspection device. Color plate inspection device is Y plate,
Produce a proof using each separation net original film separated into M plate, C plate and black plate, and make sure that there is no mistake in the layout of the original film or color before creating the actual printing plate. This is to check whether there are any errors in the characters or not, and check the finish of the printed matter in advance.

A configuration of a conventional color plate inspection apparatus will be described with reference to FIG. In the conventional color plate inspection apparatus A, an opening 144 is formed at a central portion, and a document table 140 on which a separation net document film F is placed, and a document table 140 on which a photosensitive material 401 is placed. A light-sensitive material mounting table 201 that can be moved up and down and that fits into the opening 144 of the document table 140 from below;
An exposing unit 300 movably disposed on the upper surface of the document table and exposing a photosensitive material 401 which is in close contact with the lower surface of the separated net document film F while scanning the separated net document film F;
A light-shielding cover B which is openably and closably disposed on the upper surface of the document table 140 and has an upper surface serving as a dark room, and one end of which is fixed to the light-shielding cover B, which expands and contracts in conjunction with the opening and closing of the light-shielding cover B to be separated at the time of exposure And a transparent cover sheet 275 for sealing the film F and the photosensitive material 401.

The conventional light-shielding cover B includes a housing member 20 having a face plate formed thereon, a hinge 21 for connecting an end of the housing member 20 to a main body frame 101 of the color plate inspection apparatus A, and an upper surface of the main body frame 101. A bracket 26 provided on the
The bracket 27 was fixed to the housing member 20 and the gas damper 22 was supported by the brackets 26 and 27.

The housing member 20 has a structure in which the upper portion of the document table 140 can be closed to form a dark room. However, the housing member 20 must be large enough to include the maximum size (about 650 mm × 950 mm) of the disassembled net document film F. And had considerable weight. Therefore, the gas damper 22 is provided so as to operate smoothly and lightly.

A fixing plate 24 for fixing one end of the transparent cover sheet 275 is detachably provided near an opening of the housing member 20, and the other end of the transparent cover sheet 275 is provided at a tension bar below the hinge 21. 277. With this transparent cover sheet 275, the disassembled net original film F and the photosensitive material 401 which is in close contact with it.
Was sealed.

[0007]

However, in the conventional color plate inspection apparatus A, the housing member 20 becomes a considerably heavy object.
Even if the gas damper 22 is provided, it is difficult to handle, and a finger or the like may be erroneously pinched and damaged. Housing member 20
Is connected to the upper part of the main body frame 101 via the hinge 21. Therefore, when placing the large-format separated net document film F on the document table 140, the housing member 20 must be opened to almost 90 °. However, the use of the upper part of the color plate inspection device A was restricted. Further, there is a disadvantage that the opening and closing operation of the housing member 20 becomes complicated as the size of the apparatus increases.

This invention solves the above-mentioned disadvantages of the conventional color plate inspection apparatus, provides a light-shielding cover that is lightweight and easy to handle, and provides a color plate inspection apparatus that is less likely to be damaged even if a finger is accidentally pinched. It is intended to be.

Further, by using a shutter member for the slide type light shielding cover, the opening / closing operation by the hinge is eliminated, and the document table can be used without lifting the slide type light shielding cover above the color plate inspection apparatus, and the handling operation is easy. It is another object of the present invention to provide a color plate inspection apparatus with less restrictions on the upper part of the apparatus.

[0010]

In order to solve the above-mentioned problems, a color plate inspection apparatus according to the present invention includes a platen on which a separation net document is placed on a flat plate forming an opening, and a photosensitive material placed thereon. A light-sensitive material mounting table that fits into the opening from below, an exposure unit movably disposed on an upper surface of the document table for exposing the photosensitive material that is in close contact with the separation net document, and the document. A slide-type light-shielding cover, which is located above the table and is openably and closably disposed so that the space including the exposure unit above the document table can be used as a dark room, and one end of which is fixed to the slide-type light-shielding cover. In a color plate inspection apparatus having a transparent cover sheet for developing and opening the opening / closing and opening the separation net document and the photosensitive material at the time of exposure, the slide type light shielding cover is formed on both sides of the document table. Department and this side A shutter guide member laid on at least the upper surface of the document table, and a shutter member engaged with the shutter guide member and capable of reciprocating at least on the upper surface of the document table. One end is fixed to the end of the shutter member.

[0011]

In the color plate inspection apparatus of the present invention, a shutter member constituting a slide type light shielding cover is slid along a shutter guide member laid on both side walls of the document table to open the upper portion of the document table. . The separated net document is placed on the opening formed in the document table, and the shutter member is slid again to close the upper portion of the document table. At this time, a dark room is formed above the document table.

Next, the photosensitive material mounting table on which the photosensitive material is mounted is fitted into the opening of the document table from below. The ascending photosensitive material of the photosensitive material mounting table overlaps with the separated net document placed on the document table. Since the transparent cover sheet having one end fixed to the end of the shutter member is developed in conjunction with the shutter member, it seals the disassembled net document on the document table and the photosensitive material overlapping therewith.

An exposure unit disposed above a document table moves and exposes the separated net document and the photosensitive material.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side sectional view of the color plate inspection apparatus when the light shielding cover is opened, FIG. 2 is a perspective view of the color plate inspection apparatus, FIG. 3 is a side sectional view of the color plate inspection apparatus with the light shielding cover closed, and FIG. FIG. 5 is a partial sectional view of a photosensitive material mounting table, FIG. 6 is an enlarged sectional view of a light shielding cover, and FIG. 7 is an enlarged sectional view of an exposure unit.

The main body 10 of the color plate inspection apparatus A shown in FIG.
No. 0 forms a document table 140 on which a document positioning pin bar, so-called registration pin 143, is installed above the main body frame 101 supported by the leg 102. A predetermined separation net document film F is placed in accordance with the registration pins 143. An opening 144 is formed in the document table 140 where the disassembled net document film F is placed. A light-shielding cover B that can be opened and closed in a sliding manner is provided on the upper part of the document table 140, and a first dark chamber 150 is formed above the document table 140 by closing the light-shielding cover B.

The light-shielding cover B has a side wall 145 erected from both ends of the document table 140 and a shutter guide member 160 laid in the body frame 101, and reciprocates on the document table 140 by engaging with the shutter guide member 160. And a moving shutter member 170. One end of a transparent cover sheet 275 is detachably attached to the leading end of the shutter member 170, and the other end is fixed to a tension bar 277 provided in the first dark room 150 behind the document table 140.

The first dark room section 150 is provided with an exposure section 300 housed in a housing 316, and scans and exposes a resolving net document film F placed on a document table 140. Exposure unit 300
Will be described with reference to FIG. The exposure unit 300 is provided with a plurality of tubular light source lamps 302 surrounded by a drum-shaped inner reflecting mirror 306 fixed to a housing 316 and a transmission window 304. These internal reflection mirror 306 and transmission window 30
A polygonal cylinder 301 is rotatably provided on the outer side of 4, and a filter 305 such as B, G, R, or ND is mounted on each cylinder surface. A shielding plate 308 is disposed below the polygonal cylinder 301, and a rotary solenoid 312 shown in FIG. 4 is disposed at an end of the shielding plate 308. A slit 310 is formed on the lower surface of the housing 316 below the shielding plate 308,
A light diffusion plate 328 is fixed to the light source side of the slit 310.

A bracket 283 is provided on the inner surface of the housing 316.
Is fixed, and the swing lever 282 is attached to the bracket 283.
Is inserted through the rotating shaft 285. Swing lever 282
A squeeze roller 276 is rotatably attached to one end of the, and a solenoid 284 and a spring 286 are fixed to the other end. The squeeze roller 276 projects from an opening 317 formed on the lower surface of the housing 316,
The platen 140 comes into contact with or separates from the document table 140 by the action of the solenoid 284 or the spring 286.

Both sides of the housing 316 extend downward to form a lower side plate 318. As shown in FIG.
Wheels 319 that respectively engage with rails 317a and 317b protrude from 18. A chain sprocket 321 is provided on one lower side plate 318, and a roller chain 324 is suspended between the lower side plate 318 and a chain sprocket 322 protruding from the main body frame 101 below the document table 140. A part of the roller chain 324 is connected to the lower side plate 318.
The chain sprockets 321 and 322 are fixed to the pins 320 projecting from the
When the roller chain 324 rotates, the lower side plate 318 and the housing 316 move along the rails 317a and 317 with the rotation of the roller chain 324.
Reciprocate along b.

A document table 14 is provided inside the main body frame 101.
0 is provided on the original table 1
A light-shielding screen 240 is provided on the lower surface of 40. As shown in FIGS. 1 and 4, the light-blocking curtain 240 has a plurality of rods 249 that are held at both ends by link attachments 247 of a roller chain 246 that runs symmetrically in a plane orthogonal to both ends of the document table 140. Is placed on top. The roller chain 246 is stretched around sprockets 241, 242, 243, and 244 disposed in the second darkroom 250, and reciprocates by driving a motor (not shown).

The light-blocking curtain 240 is mounted on rods 249 provided at equal intervals.
The rear ends are the leading rod 249a and the tail rod 24, respectively.
9b is fixedly connected with an adhesive or a screw. This shading curtain 2
By reciprocating while holding the plurality of rods 249, the opening 144 of the document table 140 can be opened and closed.

Inside the light shielding curtain 240, a photosensitive material mounting portion 2 is provided.
00 is formed. The light-sensitive material mounting unit 200 is driven by a motor (not shown) to be movable up and down.
And suction hoses 205 and 207 and blowers 204 and 204 connected to suction holes provided in the photosensitive material mounting table 201.
206.

Further, a suction cup 523 supported by the traveling head 522 and the frame 531 and a hose 524 connected to the suction cup 523 are arranged on the upper surface of the photosensitive material mounting table 201. Hose 52
4 is connected to a vacuum pump (not shown). The traveling head 522 is connected to both sides of the solenoid 5 via a bracket 534.
35, and the movable iron core 536 is attached to the frame 5
31 is fixedly provided. Holding pipe 5 for holding suction cup 523
37 is provided through a guide hole formed in the traveling head 522 and the frame 531. This holding pipe 53
7 is fixed to the frame 531, and is slidably mounted on the traveling head 522 along the guide hole. The traveling head 522 and the frame 5 are provided outside the holding pipe 537.
The helical spring 532 is wound between the 31. Traveling head 5
The roller 22 is provided with rollers 525 and 526 that engage with running rails 521 provided in parallel on both sides of the photosensitive material mounting table 201.

A chain sprocket 541 is provided below the traveling head 522, and a roller chain 543 is stretched along the traveling rail 521 between the chain sprocket 542 protruding from the main body frame 101. Since the roller chain 543 is also fixed to the traveling head 522, the traveling head 522 and the suction cup 523 attached to the traveling head 522 reciprocate along the rail 521 as the roller chain 543 rotates.

Next, the structure of the light shielding cover B formed on the upper portion of the document table 140 will be described in detail with reference to FIG. Guide rails 161 are attached to the upper portions of the side walls 145 rising from both ends of the document table 140, respectively. Chain sprockets 162 and 163 are provided at both ends of the guide rail 161, respectively, and reciprocate a pair of drive chains 164 moving along the guide rail 161 in the same direction. The pair of drive chains 164 engage with the above-described chain sprockets 162 and 163, and also engage with and drive the other side chain sprockets 165, 166 and 167 disposed in the main body frame 101. These drive chains 164 are rotated by a drive motor 180 connected to the chain sprocket 166.

Link attachments 168 are provided on each of the drive chains 164 at predetermined intervals so as to protrude outward, and support rods 16 are provided between the corresponding link attachments 168.
9 are provided with both ends supported (FIG. 4). One end of the shutter member 170 is fixedly attached to the leading support rod 169a of the plurality of support rods 169 with an adhesive or a screw. The other end of the shutter member 170 is fixedly wound around an outer cylinder 171a of a tension bar 171 provided inside the main body frame 101 near the starting point of the guide rail 161. The tension bar 171 is provided with a shutter member 170 by a coil spring 171c wound around a shaft 171b in an outer cylinder 171a.
Are urged in the direction in which the squeeze is involved.

When the drive chain 164 is reciprocated by the drive motor 180, the shutter member 170 reciprocates while being held by the plurality of support rods 169, and can open and close the upper surface of the document table 140. become.

Further, a cover fixing rod 124 is detachably mounted on the document table 140 side to the link attachment 168 which supports the leading support rod 169a, with both ends supported. One end of a transparent cover sheet 275 is attached to the cover fixing rod 124, and the other end is fixed to a tension bar 277 provided in the first dark chamber 150 behind the document table 140. The tension bar 277 has the same configuration as the tension bar 171 of the shutter member 170, and expands the transparent cover sheet 275 in conjunction with the forward travel of the shutter member 170, and is involved in conjunction with the return travel.

Next, the operation of the color plate inspection apparatus A will be described. The photosensitive material 401 is inserted through the photosensitive material insertion hole 101a formed on the side of the main body frame 101 shown in FIG. 4, and its tip is fed to the end of the fixed base 527 where the suction cup 523 stands by. Subsequently, when the solenoid 535 shown in FIG. 1 is energized, the suction cup 523 fixed to the frame 531 descends and sucks the photosensitive material 401. Then the solenoid 53
By turning off the power supply to 5, the suction cup 523 is raised, and the traveling head 522 moves along the traveling rail 521. The photosensitive material 401 is moved to a predetermined position on the photosensitive material mounting table 201, stopped, the suction of the suction cup 523 of the traveling head 522 is cut off, and the traveling head 522 is returned to the original position.

The photosensitive material 401 placed on the photosensitive material placing table 201 is supplied to the blower 2 via a flexible hose 205.
By the driving of 04, it is adsorbed on the photosensitive material mounting table 201 and is closely fixed. This tightly fixed state is maintained until all the exposures by the exposure unit 300 are completed a plurality of times and the photosensitive material 401 starts to be conveyed to a development processing unit (not shown).

The photosensitive material 401 is transferred to the photosensitive material mounting table 201.
When the document is conveyed upward, the light-shielding curtain 240 is at a position that closes the opening 144 of the document table 140,
The second darkroom section 250 having 1 is in a light-tight state.

Here, the upper light shielding cover B is opened and the first light shielding cover B is opened.
The dark room section 150 is illuminated by external light, and the registration pin 143 set on the document table 140 is placed on a separation net document film F (black plate and one of Y plate, M plate, and C plate, or a plurality thereof). ) Reference holes. At this time, most of the disassembled net original film F is placed on the light shielding curtain 240 located below the opening 144.

In this state, the shutter member 1 of the light shielding cover B
70 is closed to make the first darkroom part 150 light-tight,
The light-sensitive material mounting table 201 is raised slightly below the light-blocking curtain 240 to move the light-blocking curtain 240 to open the opening 144.
Then, in a state where both the first dark room part 150 and the second dark room part 250 sandwiching the document table 140 are light-tight, the light-sensitive material
01 is raised to coincide with the exposure surface table, that is, the reference surface of the separation net original film F. This will be described in detail with reference to FIG. When the photosensitive material table 201 is fitted into the opening 144 of the document table 140, the abutting surface 20 around the photosensitive material table 201
The airtight packing 201c provided on the document table 1b
A gap formed between the opening 144 and the fitting surface 201 d of the photosensitive material mounting table 201 is in close contact with the lower surface of the suction channel groove 204.
To form

On the other hand, by closing the shutter member 170,
The transparent cover sheet 275 extending with the leading end of the shutter member 170 is pulled out from the tension bar 277 and pressed against the document table 140 (FIG. 3). Therefore, the separation net document film F and the photosensitive material 401 are covered with the transparent cover sheet 275.

A window is opened in a portion of the transparent cover sheet 275 which contacts the registration pin 143, and an elastic rubber sheet 278 is attached to the window and closed.

In this state, the squeeze roller 276 of the exposure unit 300 is squeezed and the transparent cover sheet 27 is squeezed.
The air interposed between the platen 5 and the platen 140 is expelled to ensure a high degree of close contact flat state. Squeeze roller 276
Reciprocates on the document table 140, but does not perform squeezing on the outward trip, and energizes the solenoid 284 during backward movement to press the squeeze roller 276 against the transparent cover sheet 275 to perform squeezing. After the squeeze is completed, the power is turned off and the spring 286 is actuated to cause the squeeze roller 2
76 is separated from the platen 140 surface.

When the squeezing is completed, the blower 206 as a decompression device is driven, and through the suction hose 207, the suction hole 201f provided on the fitting surface 201d of the photosensitive material mounting table 201 and the suction channel groove 204, and the transparent cover sheet is passed through. 275, the document table 140 and the photosensitive material table 20
The air interposed between them is sucked. For this reason, the photosensitive material 401, the disassembled net original film F and the transparent cover sheet 2
The layers 75 are stacked and closely held in a planar shape.

The upper surface of the document table 140 and the photosensitive material table 20
The dimensions of the abutting surface 201b, the hermetic packing 201c, and the document table 140 are adjusted so that the upper surface 201a of the first plate 201 becomes the same plane.

In this state, the exposure unit 300 travels on the guide rails 317a and 317b again to perform scanning exposure, and the first color exposure by the filter 305 is completed.
At this time, the squeeze roller 276 is de-energized so that the squeeze roller 276 does not hinder exposure in a floating state.

Next, in order to perform the second image exposure using the filter 305 of another color, the light-sensitive material mounting table 201 is
Descent slightly below the travel route of. Here blower 20
6 is switched to the outlet side, and air is blown from the suction flow channel 204 to separate the separation net document F from the photosensitive material 401 and close the light shielding curtain 240. Then, the light shielding cover B is opened, and the transparent cover sheet 2 linked to the shutter member 170 is opened.
75 is separated from the separation net original film F. In this state, the next disassembled net original film F is
After the light shielding cover B is closed, the light shielding curtain 240 is opened, and the photosensitive material mounting table 201 is raised to the surface of the document table 140. At this time, similarly, the transparent cover sheet 275 is automatically re-covered, squeezed by reciprocating the squeeze roller 276 attached to the exposure unit 300, applying suction, and making the sheets adhere to each other. By rotating the polygonal cylinder 301 of 300, another filter 305 is formed.
, The scanning contact exposure using the second color filter is performed, and the second exposure is completed. The same exposure scan is repeated the required number of times to complete the exposure operation.

Finally, the photosensitive material mounting table 201 is lowered to the lowermost position, and the suction of the photosensitive material 401 by the blower 204 is released. Next, the suction cup 523 is lowered again to suck and hold the photosensitive material 401, and the photosensitive material 4
01 (FIG. 4). Thereafter, the photosensitive material 401 is sent out to a developing section (not shown).

In the embodiment described above, the shutter member is wound around the tension bar to open and close the light-shielding cover. However, the shutter member that moves with the drive chain without using the tension bar opens and closes the light-shielding cover. May be performed. FIG. 8 is a side sectional view of a color plate inspection device according to another embodiment. In FIG. 8, the front end of the shutter member 170 is fixedly connected to the leading support rod 169a, and the rear end of the shutter member 170 is fixed to the tail support rod 169b. When the drive chain 164 reciprocates, the shutter member 170 held by the plurality of support rods 169 can open and close the upper part of the document table 140.

[0043]

As described above, the color plate inspection apparatus of the present invention is provided with a shutter member which engages with the shutter guide member and can reciprocate at least above the document table, so that a finger can be erroneously pinched. It is possible to provide a color plate inspection apparatus having a slide type light-shielding cover that is lightweight and easy to handle with little risk of being damaged.

Further, it is possible to provide a color plate inspection apparatus in which the opening and closing operation of the slide type light shielding cover by the hinge is eliminated, and the document table can be opened without being lifted up.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a color plate inspection device when a light-shielding cover is opened.

FIG. 2 is a perspective view of a color plate inspection device.

FIG. 3 is a side sectional view of the color plate inspection device when the light shielding cover is closed.

FIG. 4 is a front sectional view of the color plate inspection device.

FIG. 5 is a partial sectional view of a photosensitive material mounting table.

FIG. 6 is an enlarged sectional view of a light shielding cover.

FIG. 7 is an enlarged sectional view of an exposure unit.

FIG. 8 is a side sectional view of a color plate inspection device of another embodiment.

FIG. 9 is a side sectional view of a conventional color plate inspection device.

[Explanation of symbols]

 Reference Signs List A color plate inspection device B light-shielding cover F separation net document film 140 platen plate 144 opening 145 side wall 150 first dark room section 160 shutter guide member 170 shutter member 201 photosensitive material mounting base 275 transparent cover sheet 300 exposure section 401 photosensitive material

Claims (1)

(57) [Scope of request for utility model registration] A platen for placing a separation net document on a flat plate forming an opening; a photosensitive material placement table for placing a photosensitive material and fitting into the opening from below; An exposure unit movably disposed on the upper surface of the platen for exposing the photosensitive material that is in close contact with the exposure unit; and an exposure unit disposed above the platen and movably disposed above the platen. A light-shielding cover that can be used as a dark room part including a space, and one end fixed to the slide-type light-shielding cover, which is developed in conjunction with opening and closing of the slide-type light-shielding cover to seal the disassembled net document and the photosensitive material during exposure. In the color plate inspection device having a transparent cover sheet, the slide type light shielding cover has side walls formed on both sides of the platen, and a shutter guide laid on at least an upper surface of the platen of the side walls. Components, A shutter member engaged with the shutter guide member and capable of reciprocating at least on the upper surface of the document table, wherein one end of the transparent cover sheet is fixed to an end of the shutter member. Plate equipment.