JPS6271955A - Carrying device for photosensitive material - Google Patents

Abstract

PURPOSE:To make it possible to carry a photosensitive material upto the inlet of a developing device by dividing a carrying part into two parts, and after discharging a photosensitive material from the 1st carrying part, discharging the succeeding photosensitive material from a plane scanner. CONSTITUTION:A driving roller 20 and a pair of press rollers 22 are rotated to travel a photosensitive material 14 and the photosensitive material 14 is exposed to an optical beam 24 in the exposing part 18 (1st speed). After the end of exposure of the photosensitive material 14, the 1st and 2nd carrying parts 32, 38 and respective rollers of the plane scanner 2 are driven at a high speed and the photosensitive material 14 is quickly carried (3rd speed) until the final edge of the printed image reaches a position slightly exceeding a cutter 28. The photosensitive material 14 is carried at the same speed as a traveling speed for the processing of the developing device 6 by driving the 1st and 2nd carrying parts 32, 38 and inserted into the developing device 6 (2nd speed).

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to a conveying device for photosensitive material, and in particular to a photosensitive material discharged from an exposure device that exposes the photosensitive material while traveling at a constant speed.

The present invention relates to a photosensitive material conveying device that conveys the photosensitive material to the entrance of the developing device and automatically inserts the photosensitive material into the developing device.

[Conventional technology]

While a long photosensitive material wound in a roll is run at a constant speed, slit exposure is performed using an imaging optical system, or in C), scanning exposure is performed using a recording light beam modulated with a required image signal. , an exposure bag e1 (hereinafter referred to as a flat scanner) that records a plurality of images, cuts the photosensitive material into sheets, and discharges the sheets is well known. If you connect a developing device to the rear of this flat scanner that runs the photosensitive material through a processing tank and automatically develops it, you can obtain exposed and developed photosensitive material just by setting the document on the flat scanner. can.

However, the traveling speed of the photosensitive material for exposure in the flat scanner and the traveling speed of the photosensitive material for development in the developing device are usually not the same speed.

Also, the developing device.

During processing of the photosensitive material, it is necessary to transport the photosensitive material at a constant speed, but on the other hand, the exposure device requires time to stop the traveling of the photosensitive material in order to set up the original and set the exposure conditions according to the original. Therefore, it is impossible to simply connect the exposure device and the development device.

Therefore, when making the above-mentioned connection conventionally, a conveying device having a conveying section longer than the longest photosensitive material among the photosensitive materials to be processed is disposed between the outlet of the flat scanner and the inlet of the developing device. The conveying speed of the conveying section is set to be the same as the traveling speed of the flat surface scanner while the photosensitive material is being discharged from the flat scanner, and after the end of the photographic material is completely discharged from the exposure device, the speed of the developing device is set to the same speed as the traveling speed of the flat surface scanner. The photosensitive material is conveyed from the flat scanner to the developing device by setting the speed to be the same as the speed.

[Problem that the invention seeks to solve]

The traveling speed of the photosensitive material in the developing device is generally faster than that of a flat scanner, but it is generally 50% faster than that of a flat scanner.
Since the speed is as low as cs/win, it takes a considerable amount of time for the photosensitive material sent to the conveying device to be completely inserted into the developing device from the conveying device. While the photosensitive material is being inserted into the developing device from the conveying device, the conveying speed of the photosensitive material in the conveying device must be the same as the traveling speed of the photosensitive material in the developing device. There is a problem in that the flat scanner cannot be used effectively because it cannot be delivered to the conveyance unit by the flat scanner.

[Means for solving problems]

As a means for solving the above-mentioned problems, the present invention provides an exposure device that exposes a roll-shaped photosensitive material while traveling at a first speed, cuts it, and discharges it; The photosensitive material discharged from the exposure device is transported between the photosensitive material transporting device and the developing device that performs development processing by running the photosensitive material through the processing tank at a second speed different from the speed. The first
and a third speed faster than the first and second speeds;
a second conveyance section capable of conveying the photosensitive material conveyed by the first conveyance section at at least three speeds, the first, second, and third; A conveying device for a photosensitive material is characterized in that, when the photosensitive material is traveling at a first speed, the photosensitive material is prevented from entering the first conveying section from the exposure device, and the photosensitive material is traveling at a first speed. an exposure device that exposes, cuts, and discharges;
In nrJ with a developing device that performs development processing by passing the exposed photosensitive material through a processing tank at a second speed different from the first speed, in a photosensitive material conveying device that conveys the photosensitive material. , the photosensitive material discharged from the exposure device is transferred to the first. the second speed and the first speed. Second
The photosensitive material transported by the first transport section is conveyed at at least three different speeds, including a third speed faster than the first speed. a second conveying section capable of conveying at least three types of speeds, a second and a third, and when the photosensitive material is present in at least the first conveying section, the photosensitive material is transferred from the exposure device to the first conveying section. The purpose of the present invention is to provide a photosensitive material conveyance device characterized by preventing new entry of the photosensitive material.

[For production]

Since the transport section of the transport device is divided into two parts, after the photosensitive material is discharged from the first transport section, the next photosensitive material can be discharged from the flat scanner.

Furthermore, once the photosensitive material is discharged from the flat scanner, the photosensitive material can be rapidly fed to the entrance of the developing device at a third speed. Furthermore, the first. The second conveying section is connected to both the first and second conveying sections.
, third, when the image can be transported at at least three different speeds, the exposure device and the developing device can be connected by the shortest transport device.

〔Example〕

Examples of the photosensitive material conveying device according to the present invention will be described below.
The explanation will be based on the attached drawings.

In this figure, (2) is a flat scanner, (4) is a transport device, (6) is a developing device, and (8) is a transport path for the photosensitive material. A roll-shaped photosensitive material (14) in a film magazine (12) in a flat scanner (2) is sent to an exposure section (18) through a pair of light-shielding rollers (16). The exposure section (18) is provided with a drive roller (20) perpendicular to the traveling direction of the photosensitive material (14) and a pair of presser rollers (22) that abut and follow the drive roller (20). The photosensitive material (14) is wound along the outer periphery of the drive roller (20).

Driven. The drive roller (20) is driven to rotate at a constant circumferential speed by an appropriate means such as a pulse motor, and the press roller (22) brings the photosensitive material into close contact with the circumferential surface of the drive roller (20) and conveys it at a constant speed. . On the other hand, a light beam (24) emitted from a recording scanning light source (not shown) travels through the gap between a pair of presser rollers (22) in the axial direction of the rollers at a predetermined period to expose the photosensitive material (14). The light beam (24) is modulated by an image signal by appropriate modulation and deflection means, scans the photosensitive material (14) in the width direction at a required period, and records a desired duplicate image by exposure. The exposed photosensitive material (14) changes direction along the outer periphery of the drive roller (20) and is fed into the conveying device (4) by a pair of feed rollers (26). In front of the feed roller (26), an H-cutter (28) is provided for cutting the exposed portion of the photosensitive material (14).

Furthermore, a detection means (29) such as a photosensor is provided between the feed roller (26) and the cutter (28) to detect the leading and trailing ends of the cut photosensitive material (14). There is.

The photosensitive material sent to the conveying device (4) is transferred to a first conveying section (32) consisting of a plurality of rollers (3I) and an endless belt (30), and a first conveying section (32) consisting of a plurality of rollers (33) and an endless belt (34). ), (36), and is transported by a transport method described later, and sent to the developing device (6). Here, the total length of the first and second transport sections (32) and (38) is set to be longer than the longest photosensitive material (14) to be printed. Furthermore, the positions of the leading and trailing ends of the photosensitive material (14) within the conveying device (4) may be determined, for example, by
As disclosed in Japanese Patent Publication No. 7-107351, the signal from the detection means (29) in the flat scanner (2) is transmitted to the first and second transport sections (32), (38) and the flat scanner (2). rollers (16), (20),
By counting up by pulses generated in synchronization with the driving of (22) and (26), the configuration is such that detection is possible at all times. This will be explained with reference to the case where the position of the tip of the photosensitive material (14) is detected. Detection means (29)
The rollers (16), (20), (22) in the flat scanner (2) detect the leading edge of the photosensitive material (14).
), a counter etc. is counted up by the pulse generated in synchronization with the drive source of (26), and then the photosensitive material (14)
After the leading edge of the photosensitive material (14) enters the first conveying unit (32), the count is further increased by a pulse generated in synchronization with the drive source of the first conveying unit (32), and then the leading edge of the photosensitive material (14) After the photosensitive material (14) enters the second conveyance section (38), the photosensitive material (14) is further counted and amplified using pulses generated in synchronization with the drive source of the second conveyance section (38).
The position of the tip of the is being detected. This is a photosensitive material (14)
The same goes for detecting the position of the rear end of.

Also, instead of using a counter in detecting the positions of the leading and trailing ends of the photosensitive material (14).

For example, as disclosed in Japanese Unexamined Patent Publication No. 56-65472, a shift register is used and the detection means (2
It is also possible to shift the signal 9) by a pulse synchronized with driving.

The photosensitive material (14) fed into the developing device (6) is developed by traveling through a developing tank (/10), a fixing tank (42), and a washing tank (44), and then is transferred to a drying section (4).
6) and is dried and discharged to a discharge tray (48).

Next, the method of conveying the photosensitive material (14) in the conveying device (4) will be explained, but since the operation of the conveying device (4) differs depending on the length of the photosensitive material (14) to be exposed, we will explain each case separately. I will explain them separately.

First, a case will be described in which the length of the photosensitive material (14) to be exposed is longer than the entire length of the second transport section (38). First, the drive roller (2o) and the pair of presser rollers (22) rotate, causing the photosensitive material (14) to travel, and exposing the photosensitive material (14) with a light beam (24) in the exposure section (18). (Hereinafter, the traveling speed of the photosensitive material at this time will be referred to as "first speed.") Photosensitive material (
14) enters the conveying device (4) through the pair of feed rollers (26), the first conveying section (32)
The photosensitive material (14) is conveyed by driving at a speed of . When the leading end of the photosensitive material (14) enters the second transport section (38), the second transport section (38) is also driven at the first speed to transport the photosensitive material (14).

Strictly speaking, the first speed mentioned above is set so that the transport speed of the photosensitive material (14) in the flat scanner (2) is approximately 1% faster than the transport speed in the transport device (4). It is. This is due to roller diameter errors, etc.
This is to prevent the photosensitive material (14) in the exposure area (18) from being stretched and deteriorating the printing accuracy.
Due to this speed difference, as the photosensitive material (14) is transported, a slight slack (9) is generated between the flat scanner (2) and the transport device (4). However, since this speed difference is slight, these will be described as the same first speed.

When the exposure of the photosensitive material (14) is completed, each roller in the first and second conveyance sections (32), (3g) and the flat scanner (2) is driven at high speed, and the photosensitive material (14) is
Fast forwarding is performed until the end of the printed image reaches a position slightly beyond the cutter (28) (hereinafter, the traveling speed of the photosensitive material at this time will be referred to as the "third speed").

At this position, the photosensitive material (14) is stopped and cut by the cutter (28).

Next, the first. The second conveying sections (32), (38) and the pair of rollers (26) are driven to rapidly feed the photosensitive material (14) at a third speed to a position where the leading edge of the photosensitive material (14) reaches the developing device (6). At this time, the photosensitive material in the flat scanner (2) is rewound until the cutting position reaches the vicinity of the exposure section (18), and becomes ready for the next exposure. However, in this state, a prohibition signal for prohibiting the next exposure of the photosensitive material is being sent from the transport device (4) to the flat scanner (2).

Next, by driving the first and second conveying sections (32) and (38), the photosensitive material (14) is conveyed at the same speed as the traveling speed for processing in the developing device (6). (6) (Hereinafter, the traveling speed of the photosensitive material at this time will be referred to as the "second speed"). At this time, when the terminal end of the photosensitive material (14) comes off the first conveyance section (32), the driving of the first conveyance section (32) is stopped. Furthermore, if the end of the photosensitive material (14) enters a certain distance (T) from the tip of the second conveying section (38), the above-mentioned prohibition signal is released. When the material (14) is inserted into the developing device (6) by the second transport section (38), the leading end of the next photosensitive material being exposed is driven at the second speed. The value of the distance (T), which is the distance to prevent the vehicle from entering (38), is determined by the first, second, and third conveying speeds, the first, second conveying parts (32), Since it varies depending on the length of (38), these values are set in advance. The distance mentioned above (
The value of T) can also be set to O by setting the entire length of the first conveying section (32) to be long.

The length of the photosensitive material (14) to be exposed next is
A case will be described in which the length is longer than the total length of the first conveyance section (32) but shorter than the total length of the second conveyance section (38). However, the description of the same operation as described above when the length of the photosensitive material (14) to be exposed is longer than the entire length of the second conveyance section (38) will be omitted.

First, the photosensitive material (14) is exposed while traveling at a first speed. When the photosensitive material (14) enters the transport device (4), the first transport section (32) is driven at a first speed, and the photosensitive material (14) enters the second transport section (38). Then, the second transport section (38) is also driven at the first speed. When the exposure is completed, the first and second transport sections (32) and (38) are driven at the third speed to rapidly transport the photosensitive material (14).

Next, the first and second transport sections (32) and (38) stop, and the photosensitive material (14) is cut by the cutter (28). Next, the first and second conveyance sections (32) and (38)
is driven at a third speed to rapidly advance the photosensitive material (14) to a position where its leading edge reaches the developing device (6). Next, the second transport section (38) is driven at a second speed to insert the photosensitive material (14) into the developing bag (6).

Next, a case will be described in which the length of the photosensitive material (14) to be exposed is shorter than the total length of the first transport section (32). However, the description of operations that are the same as those described above will be omitted.

First, the photosensitive material (14) is exposed while traveling at a first speed. When the photosensitive material (14) enters the transport device (
The first transport section (32) is driven at a first speed. When the exposure is completed, the first conveying section (32) is driven at the third speed and then stopped for two times, and the photosensitive material (14) is cut. Next, the first conveyance section (32) is driven at the third speed, and when the leading edge of the photosensitive material (14) reaches the second conveyance section (38), the second conveyance section (38) also moves to the third speed. the photosensitive material (14).

Fast forward until the tip reaches the developing device (6). Subsequently, the second conveying section (38) is driven at the second speed to insert the photosensitive material (14) into the developing device (6).

The above explanation deals with the case where the photosensitive material (14) is conveyed at the same third speed before and after cutting when it is rapidly fed. good.

In addition, in the above description, the first transport section (32)
In the above case, the entire length of the second transport section (:E) is driven at three different speeds, the longest one of the photosensitive materials (14) to be exposed. By having a longer configuration, the overall length of the conveying device becomes somewhat longer, but it is also possible to eliminate the need for the first conveying section (32) to be driven at the second speed.

Further, in the above explanation, the case where a flat scanner (2) is used as an exposure device has been described, but the conveyance device of the present invention can be used in various exposure devices that perform printing while moving a photosensitive material. Needless to say.

〔effect〕

Since the photosensitive material conveying device according to the present invention is configured as described above, when connecting an exposure device and a developing device having different running speeds, it is possible to connect the exposure device and the developing device with a short conveyance path length, and the exposure device Waiting time can be minimized. In addition, when both the first and second conveyance sections are capable of conveying at least three types of speeds: first, second, and third, the shortest conveyance path length between the exposure device and the developing device can be set. can be connected with.

[Brief explanation of drawings]

The drawing is a schematic diagram showing a photosensitive material conveying device, which is an embodiment of the present invention, together with an exposure device and a developing device. 2... Exposure device (plane scanner), 4... Conveying device, 6... Developing device, 14...
...Photosensitive material, 32...First conveyance section, 38
...Second transport section.

Claims (1)

[Claims] 1. An exposure device that exposes a roll of photosensitive material while traveling at a first speed, cuts it, and discharges it; and an exposure device that exposes a roll of photosensitive material while traveling at a first speed; In the photosensitive material conveying device that conveys the photosensitive material, the photosensitive material discharged from the exposure device is transferred between the developing device and the developing device that performs development processing by running the photosensitive material through the processing tank at a high speed.
and a third speed faster than the first and second speeds;
The photosensitive material transported by the first transport section is
The second and third parts can be conveyed at at least three different speeds.
and a conveyance section of the photosensitive material, wherein at least when the photosensitive material is present in the first conveyance section, new entry of the photosensitive material from the exposure device into the first conveyance section is prevented. Device. 2. An exposure device that exposes a roll-shaped photosensitive material while traveling at a first speed, cuts it, and discharges it; and an exposure device that moves the exposed photosensitive material through a processing tank at a second speed different from the first speed. In the photosensitive material conveying device that conveys the photosensitive material, the photosensitive material discharged from the exposure device is transferred at the first and second speeds and at the first speed and the developing device that performs the development process. , the third speed is faster than the second speed.
a first conveyance section capable of conveying at least three types of speeds, and a photosensitive material conveyed by the first conveyance section capable of conveying at least three types of speeds: the first, second, and third speeds; and a second conveyance section, and at least when the photosensitive material is present in the first conveyance section, new entry of the photosensitive material from the exposure device into the first conveyance section is prevented. Conveyance device.