JP2920381B2 - Color proof creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus in which an exposure apparatus and a developing apparatus are connected by an accumulator unit. A document film or a document is sometimes placed accurately at a predetermined position, and a positive or negative type color photographic light-sensitive material is exposed a plurality of times, one for each document, a plurality of times, and the same color arrangement as the print finish is obtained. BACKGROUND OF THE INVENTION The present invention relates to, for example, a color proof creating apparatus, among color proof techniques for directly inspecting the presence or absence of an abnormality in a separation net document for creating a printing plate by forming a color image. The color proof creating apparatus can also be used as a poster creating apparatus for creating a poster using a color photosensitive material by using the separated net document.

[Conventional technology]

In general, this type of apparatus connects an exposure apparatus and a developing apparatus. Of these, the exposure apparatus feeds the photosensitive material stored in the magazine onto an exposure table by a feed roller, exposes the color printing original plate on the exposure table, and discharges the exposed photosensitive material to the developing apparatus side. Paper. On the other hand, the developing device processes the exposed photosensitive material discharged from the exposure device, and discharges the material outside the apparatus. The transport speed of the photosensitive material in the exposure device is about 10 times higher than the transport speed in the developing device.

[Problems to be solved by the invention]

The above-described conventional color proof creating apparatus can feed the next photosensitive material to the exposure table even after the exposure work is completed in the exposure apparatus, but before the work of feeding the photosensitive material to the developing apparatus, which is a subsequent process, is completed. Therefore, there was a problem that the next exposure operation could not be started.

In view of the above, even when the photosensitive material feeding operation to the developing device is in progress, the exposed photosensitive material can be discharged immediately and at a higher speed than the exposure device, and the subsequent exposure processing can be continued without delay. A color proof creation device is required,
For this purpose, the present applicant has attained an object by arranging an accumulator for temporarily stopping a photosensitive material between an exposure apparatus and a developing apparatus in Japanese Patent Application No. 63-321816.
However, in order to feed the photosensitive material from the accumulator to the developing device, the developing device, the accumulator unit, and the exposure device are in the same space through the photosensitive material conveyance path, and the moisture, light, and gas in the developing device are discharged from the accumulator unit and the exposure device. To enter. This adversely affects the undeveloped photosensitive material and contaminates the apparatus. It is necessary to eliminate such a phenomenon. An object of the present invention is to solve the above problems.

[Means for solving the problem]

An object of this invention is to provide an exposure table on which a photosensitive material is placed, and to transport the photosensitive material over the exposure table with the end of the photosensitive material being held at the end and placing the photosensitive material on the exposure table. Holding and conveying means, and an exposure apparatus for exposing the original film for printing in close contact with the photosensitive material placed on the exposure table, and the photosensitive material sent from the exposure apparatus into a processing liquid A developing device for performing processing by immersion, wherein a shutter for preventing a product generated from the developing device from flowing out to the exposure device is provided with a shutter provided upstream of the shutter in the transport direction. This is achieved by a color proof creating device, wherein the control is performed in accordance with the detection result of a sensor that detects a material.

〔Example〕

Hereinafter, the present invention will be described based on an embodiment shown in the accompanying drawings.

FIG. 1 is a cross-sectional view of a color proof forming apparatus using the method of the present invention, FIG. 2 is a front view showing the appearance of the color proof forming apparatus, FIG. 3 is a side view thereof, and FIG. FIG. 5 is a cross-sectional view showing the state of the accumulator unit at the beginning of paper discharge from the printer, FIG. 5 is a cross-sectional view showing the state of the accumulator unit during loop formation, and FIG. 6 is the state of the accumulator unit during the start of transport to the developing device. FIG. 7 is a cross-sectional view showing a roller pressure driving of the accumulator unit, and FIG. 8 is a cross-sectional view of a conventional device.

The exposure apparatus and the developing apparatus are almost the same as those of the color proof forming apparatus using the present invention, except that the conventional apparatus shown in FIG. 8 does not include an accumulator unit. Therefore, in the drawings, members having the same functions as those of the conventional device are denoted by the same reference numerals in the device using the present invention, and the description of the conventional device is omitted because it is redundant. Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the embodiments. Color proof creation device is Y version, M version, C
Before making a production printing plate using the man-made furnace disassembled mesh manuscript film that has been color-separated into plate and black plate, there is no mistake in the layout of the manuscript film, no color difference, no errors in characters A device for obtaining a proof (color proof) for checking the finish of the printed matter in advance by inspecting whether or not a printed matter is obtained. By creating a proof (color proof) using color photosensitive material by successively contacting and exposing with color spectroscopy corresponding to the film, it is possible to detect errors in the separation net manuscript and check the print finish in advance, The modification is to be undone.

In the figure, 1 is a main body of a color proof creation device,
The main body 1 includes an exposure device 2, an accumulator unit 3,
The developing device 4 has three parts.

The exposure device 2 is used for exposing the printing original film to the photosensitive material in close contact, and a light-shielding cover 50 that enables formation of a dark room is provided on the upper portion thereof so as to be opened and closed by a hinge 51 and a gas damper 52. , A light source unit 21. The light source unit 21 includes a light source and a color filter inside, and performs exposure by scanning the light source. An openable / closable light-shielding curtain (not shown) is provided below the light source unit 21. On the light-shielding curtain, a printing document film is placed on the upper surface of a document frame 53, and a document positioning pin bar (registration pin, not shown). )), And can be set precisely using the pin holes of the original. Reference numeral 22 denotes a photosensitive material loading unit, which is configured to accommodate a long photosensitive material magazine 23 wound in a roll shape. The leading end of the photosensitive material long roll 23a is sent out by a pair of nipping and feeding rollers 24, and the leading end is a cutter.
Wait at the 27 position. Further, the tip portion is fed to the left end of the fixing table 54 by the sandwiching sheet feeding roller pair 24, the tip portion is sucked by the suction cup 25, conveyed, and the predetermined length of the photosensitive material long roll 23a is measured. Move to the stop position and stop. The long roll of photosensitive material 23a is cut by the cutter unit 27 into a seal photosensitive material 23b, and is further moved so that the leading end of the sheet photosensitive material 23b is located at a predetermined position on the exposure table 26. After the suction of the suction cup is cut off, the suction cup 25 returns to its original position.

The exposure table 26 is moved up and down each time one or more of the Y plate, M plate, C plate, and black plate of the printing original film is set on the original frame 53 and exposed to light. It is configured so that it can be exposed. That is, the exposure table 26 rises with the light-shielding curtain opened and moves up the sheet photosensitive material 23.
b is brought into close contact with the printing original film, and the light source unit 2
Exposure by one. After that, the exposure table 26 descends and closes the light shielding curtain. Here, the light-shielding cover 50 is opened, and when the next original film for printing is set, it rises again to perform an exposure process, etc., and when the entire exposure process is completed and falls, the exposed sheet photosensitive material 23b is removed from the accumulator. The paper can be discharged to the unit 3 side. Reference numeral 28 denotes a pair of paper discharge rollers from the exposure device 2.

The accumulator unit 3 is provided as a buffer for performing temporal matching between the exposure device 2 and the developing device 4, and during the feeding operation of the sheet photosensitive material 23 b at the entrance of the developing device 4 which is a later process. The next sheet photosensitive material can be fed to the exposure table by stocking the sheet photosensitive material 23b, and the next exposure operation can be started. Further, the developing device 4 is configured to be on standby until the receiving system is ready. A sensor 31a is provided near the roller pair 28 of the exposure device 2 and detects the leading end of the photosensitive material discharged from the exposure device 2 to detect the leading end of the photosensitive material discharged from the exposure device 2 and to hold the pair of nipping and conveying rollers 130 and 150 of the accumulator unit 3. Are driven at high speed and at the same speed. 34 is a fixed conveyance guide.
34 is provided above the photosensitive material operation path,
It is configured to linearly regulate the traveling of 23b. 35
Is a movable conveyance guide, and the guide 35 is provided below the photosensitive material traveling path, and linearly regulates the traveling of the sheet photosensitive material 23b in a pair with the fixed guide 34,
The guide 35 is openable and closable, and can be opened downward when the sheet photosensitive material 23b is stored in the accumulator unit. A sensor 36 is provided in the vicinity of the paper discharge port 37 of the accumulator unit 3, and the tip of the conveyed sheet photosensitive material 23b is
When it is detected that the sheet has reached the mounting position, the pair of feed nipping and conveying rollers 130 and 150 and the pair of sheet discharge rollers 28 on the exposure apparatus side are detected.
Then, the pair of nipping and conveying rollers 161 is temporarily stopped, and the movable guide 35 is opened downward. Thereafter, the pressure contact of the driven roller of the roller pair 130 is released, and only the roller pairs 28 and 161 are driven at a high speed to accumulate the accumulator unit 3. The sheet photosensitive material 23b is fed so as to form a free loop, and the rear end of the photosensitive material 23b is configured to stay in a transport guide 162 following the accumulator unit 3 from the exposure device 2. Reference numeral 38 denotes a sensor. The sensor 38 is provided at an appropriate position below the apparatus 3 to detect the position of the leading end when the movable transfer guide 35 is opened downward and to monitor the opening and closing of the movable transfer guide 35.

As shown in FIG. 7, the pair of nipping and conveying rollers 130 and 150 are composed of driving rollers 130a and 150a and driven rollers 130b and 150b. . And
A driven roller bearing 138 is fitted in an elongated hole provided in the frames 3A and 3B so that it can move up and down. An endless spring belt 139 is hung in a groove provided on the outer periphery of the bearings 137 and 138,
The rollers 130a and 130b and 150a and 150b are urged to press against each other.

Further, timing pulleys 134 and 154 with roller pressing cams are rotatably fitted concentrically to the shafts on both sides of the shafts of the drive rollers 130a and 150a. The timing pulley 134 includes a roller pressing cam 134a and drive transmission pulleys 134b and 134c. The timing pulley 154 also has the same structure as 134, and a description thereof will be omitted. And the motor shaft for the control cam
Drive is transmitted to the pulley 143b from a timing pulley 142 fixed to the pin 141 by a pin 143 to determine the rotation angle of the roller pressing cam 134a.
The drive is transmitted to the pulley 154c of the timing pulley 154 with the roller pressing cam concentric with 0a, and the rotation angle of the roller pressing cam 154a is set to the same rotation angle as the cam 134a.

The control cam motor shaft 141 is connected to both frames via a bearing 144.
It is rotatably fixed to 3A and 3B.

Further, on both sides of the driven roller shaft, corresponding cam receiving disks 136 and 156 are rotatably provided concentrically with the driven roller shaft and receiving the compression cam.

An accumulator unit drive motor (not shown) is connected to one axis of the shaft integrated with the drive roller 130a, and the other end of the drive connection pulley 131 for the drive rollers 130a and 150a is fixed to the drive roller 150a. The driving belt is connected to the pulley 151 by a timing belt.

As shown in FIG. 4, FIG. 5, and FIG. 6, the pressure contact and separation areas of the roller pressure contact cams 134a and 154a are in the range of 0 to 180 ° and 0 to 90 °, respectively. The rotation direction of each cam is clockwise in this embodiment. However, the cam shape and the rotation direction are not limited to these.

Reference numeral 39 denotes a shutter. The shutter 39 is provided at the front of the paper discharge port 37 so as to be openable and closable to prevent moisture, light, or gas (generated from a developing solution or a fixing solution) from entering the developing device 4. In addition, the traveling path of the photosensitive material can be shielded from light and air. P ₁ is a positioning pin, the pin P ₁ is fitted into the hole H ₁ of the exposure device 2 is for positioning and fixing. H ₂ is a hole, and the hole H ₂ is a positioning pin P _{2 of the} developing device 4.
When a plurality of accumulator units are formed or a plurality of accumulator parts are formed, positioning pins of another accumulator unit can be fitted and positioned and fixed.

The developing device 4 is for performing processing such as developing, fixing, and stabilizing the sheet photosensitive material 23b fed from the accumulator unit 3 side. Reference numeral 41 denotes a second exposure tube, which is provided immediately after the entrance 42 so that the exposed sheet photosensitive material 23b can be subjected to a second exposure in a developing solution. Reference numeral 43 denotes a developing section for performing color development processing on the photosensitive material after the second exposure, 44 denotes a fixing section for performing bleaching and fixing processing, and 45 denotes a stabilizing section for performing stabilizing processing. 46 is a drying section,
The drying section 46 is a section for drying the photosensitive material after a series of processes. Reference numeral 47 denotes a replenishing tank. The tank 47 contains a replenishing solution such as a developing solution, a fixing / bleaching solution, and a stabilizing solution so that the replenishing solution can be supplied to each of the above-described parts via a supply pipe (not shown). It has become.

The photosensitive material long roll 23a of the photosensitive material magazine 23 loaded in the photosensitive material loading unit 22
Is sent out by the suction cup 25 and enters the exposure apparatus 2,
As described above, the sheet photosensitive material is cut with a cutter 27
23b, it is set on the exposure table 26, then rises and comes in close contact with the printing original film, is exposed by the light source unit 21, descends after the exposure, and its leading end is transferred to the discharge roller pair 28, where the discharge roller The sheet is discharged to the accumulator unit 3 by the pair 28 and the conveying roller pair 161 rotating at the same speed.

In the accumulator unit 3, first, the sensor 31a
Has detected the leading edge of the sheet photosensitive material 23b,
As shown in the figure, the rotation of the timing pulleys 134 and 154 with cams causes the pressing cams 134a and 154a of the pair of nipping and conveying rollers 130 and 150 to press the roller pair together, thereby driving the driving motor of the accumulator unit at high speed. At the same time, the paper discharge roller pair 28 and the transport roller pair 161 for paper discharge on the exposure device 2 side are driven by the drive motor on the exposure device 2 side at a high speed which is exactly the same as that of the nipping and transporting roller pair 130, 150.

At this time, the movable transport guide 35 in the accumulator unit 3 and the fixed transport guide 34 form a straight path. When the leading end of the sheet photosensitive material 23b reaches the position of the sensor 36, the rotations of the pair of nipping and conveying rollers 130, 150, 161 and the pair of sheet discharging rollers 28 temporarily stop.

Next, the sensor 38 detects that the movable guide 35 has been opened downward.
Is confirmed, as shown in FIG.
The pressing cams on the shafts of the driving rollers 130a and 150a of 130 and 150 rotate in the clockwise direction by 180 °, and the roller pressing cam 134a lifts the driven roller 130b via the cam receiving disk 136 to release the pressing. The roller pressing cam 154a keeps the driven roller 150b pressed.

In this state, while the driving of each pair of nipping rollers in the accumulator unit 3 is stopped, only the sheet discharging roller pair 28 of the exposure device 2 and the conveying roller pair 161 linked therewith are rotated at a high speed, and the exposed sheet photosensitive material is rotated. 23b is inserted into the accumulator unit in a U-shape. Then, the rear end of the sheet photosensitive material 23b is detected by the detection sensor 163, and remains in the conveyance guide 162 in a state of passing through the pair of conveyance rollers 161. The driving of each roller pair on the exposure apparatus side is stopped.

When the state of the accumulator shown in FIG.
When the following photosensitive signal can be received by the detection signal, the shutter 39 is opened and the accumulator drive motor starts to be driven at a low speed, while keeping the pressure-contact state of each of the nipping and conveying roller pairs 130 and 150 unchanged. As the motor, a speed controller motor is used. Then, when the leading end of the sheet photosensitive material 23b is fed into the nipping / conveying roller pair 42a of the developing unit, as shown in FIG. 6, the pressing cams 134a, 154a of the nipping / conveying roller pair 130, 150 are further rotated by 90 ° and the same. The pressure contact of both roller pairs is released, and the drive rollers 150a, 150a of the transport roller pairs 130, 150 of the accumulator continue to be driven at the same speed. The conveyance of the sheet photosensitive material 23b into the developing device is all performed by the pair of conveying rollers 42a in the developing device.

Then, when the rear end of the photosensitive material 23b passes the position of the sensor 36, the shutter is safely closed with a little extra time by a timer. Then, the roller press cams 134a and 154a and the movable conveyance guide 35 return to the state shown in FIG. 4 again, and wait for receiving the subsequent sheet photosensitive material.

By closing the shutter 39 as described above, water vapor, light, and gas of the developing solution do not enter from the developing device 4 side, and it is possible to safely wait until the photosensitive material and the receiving system of the developing device 4 are prepared. Then, the exposing device 2 allows the sheet photosensitive material 23b to be discharged to the accumulator unit 3 and, at the same time, starts the next sheet feeding and exposure operation.
When the accumulator unit 3 receives a signal notifying that the receiving system of the developing device 4 is ready, the shutter 39 is opened, and the nipping and conveying roller pair 150 is driven to develop the photosensitive material in the accumulator 3 from the paper discharge port 37. The paper is discharged to the device 4.

In the developing device 4, the photosensitive material that has entered through the inlet 42 is subjected to the second exposure process in the second exposure tube 41, the color development and development process in the developing unit 43, the fixing bleaching process in the fixing unit 44, and the stabilizing unit 45. After performing the drying process in the drying unit 46, the processed photosensitive material is discharged outside the apparatus.

With the accumulator control method configured as described above, the color proof creating apparatus can provide about two minutes corresponding to the photosensitive material feeding time in the developing device even if the processing time in the exposure device and the developing device is the same as the conventional device. The time required from the start of exposure to the start of the next exposure can be reduced to 3/4 of the conventional time.

Further, since the opening period of the shutter device provided in the boundary area with the developing device 4 is set to the transporting period of the sheet photosensitive material to the developing device, that is, the necessary minimum time, the fogging phenomenon on the photosensitive material due to moisture, gas or light, Contamination development and the like can be avoided as much as possible, and the durability of the apparatus can be improved.

At the same time, since the nipping and conveying roller pairs 130 and 150 are arranged at short intervals in the conveying path constituted by the conveying guides 162, 34, 35, the leading end of the sheet photosensitive material 23b does not meander at all, It is transported stably while being guided, and there is no occurrence of jams.

In addition, it is possible to stably control the transfer of the accumulator with a mechanical and simple configuration using one drive motor and one control motor.

〔The invention's effect〕

According to the present invention, an exposure table on which a photosensitive material is placed, and the photosensitive material is conveyed over the exposure table, with the end of the photosensitive material held and the end placed first, and placed on the exposure table Holding and conveying means, and an exposure apparatus for exposing the original film for printing in close contact with the photosensitive material placed on the exposure table, and the photosensitive material sent from the exposure apparatus into a processing liquid In a color proof forming apparatus having a developing device that performs processing by immersion, it is possible to reduce adverse effects on image quality due to moisture generated in the developing device.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a color proof creating apparatus using the present invention. FIG. 2 is a front view showing the appearance of the color proof creating apparatus. FIG. 3 is a side view of the same. FIG. 4 is a cross-sectional view showing the state of the accumulator unit at the initial stage of paper discharge from the exposure device. FIG. 5 is a sectional view showing the state of the accumulator unit during the formation of a loop. FIG. 6 is a sectional view showing the state of the accumulator unit during the start of transport to the developing device. FIG. 7 is a cross-sectional view showing roller press-fit driving of the accumulator unit. FIG. 8 is a sectional view of a conventional color proof forming apparatus. DESCRIPTION OF SYMBOLS 1 ... Color proof production apparatus main body 2 ... Exposure apparatus 3 ... Accumulator unit 4 ... Developing apparatus 21 ... Light source unit 22 ... Photosensitive material loading unit 23 ... Photosensitive material magazine 23a ... Photosensitive material long roll 23b: Sheet photosensitive material, 24: Feed roller pair 25: Sucker, 26: Exposure table 27: Cutter, 28: Discharge roller pair 31a, 36, 38, 163, 166: Sensor 32, 42: Inlet , 34: fixed conveyance guide 35: movable conveyance guide, 37: paper ejection port 39: shutter, 41: second exposure cylinder 42a, 130, 150, 161: nipping conveyance roller pair 43: developing unit, 44 ... Fixing section 45 Stable section 46 Drying section 47 Replenishment tank 50 Light-shielding cover 51 Hinge 52 Gas damper 53 Top of document frame 54 Fixed table 130a, 150a … Driving rollers 130b, 150b …… Driving rollers 134,154 …… Timing pulleys 134a, 154a …… Roller pressure cam 136, 156… Cam receiving disk P ₁ , P ₂ … Pin, H ₁ , H ₂ … Hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-158733 (JP, A) JP-A-63-137219 (JP, A) JP-A-62-280750 (JP, A) JP-A-2- 70656 (JP, A) JP-A-59-45432 (JP, A) JP-A-62-99736 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03D 13/00 G03B 27 / 14 G03B 27/46 G03B 27/32

Claims (1)

(57) [Claims] An exposure table on which a photosensitive material is placed, and an end portion of the photosensitive material is held and the end portion is used as a tip to convey the photosensitive material over the exposure table and place the photosensitive material on the exposure table. An exposure device for holding and transporting the photosensitive material placed on the exposure table, and exposing the original document film to the photosensitive material in close contact with the photosensitive material placed on the exposure table, and a processing solution for the photosensitive material sent from the exposure device. And a developing device for performing processing by immersion in the color proof forming apparatus. A shutter for preventing a product generated from the developing device from flowing out to the exposure device is provided upstream of the shutter in the transport direction. An apparatus for creating a color proof, wherein the control is performed in accordance with the detection result of a sensor for detecting a photosensitive material.