JPS62116464A - Feeding device for sensitized material in roll - Google Patents

Abstract

PURPOSE:To prevent wasteful deterioration of a development treating solution, by a method wherein the tip leader part of a sensitized material in roll is cut to length shorter than a given cut length, the leader part is removed from a conveyance passage and is accumulated at an underlaying waste part. CONSTITUTION:With the openable cover of a sheet feed part opened, a built-in magazine 21 is taken out and a magazine 21 containing a sensitized roll is placed on a placing table 24 for positioning. The exposed tip lead part of the sensitized material R in roll is held for pull-out, and is fed in a conveyance part 30 in a condition to be positioned along the guide surface of a feed guide member 22 situated in a feed part 20, and after the lead part is held by the nip formed by feed rollers 31, the openable cover is closed to bring the interior of the sheet feed part 20 into a dark chamber state. Consecutively, when motor- operated feed motion is started, the sensitized material R in roll is conveyed through rotation of the feed rollers 31. Further, the sensitized material in roll is held between the nip formed by subsequent rotary feed rollers 32, and when the material in roll is fed by a given length, it is cut by a cutting device 33, and the tip guide member is brought into a cut sheetform state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a feeding device that supplies a roll of photosensitive material housed in a light-tight container to an image recording device such as a copying device, and in particular, The present invention relates to a feeding device equipped with a cutting device for cutting the leading end of a roll of photosensitive material.

[Conventional technology]

Roll photosensitive materials, such as photographic roll film and photographic paper, are stored in a light-tight container such as a magazine, and then loaded into an image recording device such as a photographing device, a copying device, or a printing device. Ru.

A roll photosensitive material container (hereinafter referred to as a magazine) is composed of a box body having a slit for taking out the roll photosensitive material (hereinafter referred to as a photosensitive roll), and a winding shaft (spool) rotatably supported within the box body. has been done. The unexposed photosensitive roll is wound around the winding shaft, and is pulled out from the slit portion of the box.

The magazine containing the unexposed photosensitive rolls is installed at a predetermined position within the paper feed section (photosensitive material loading chamber) of the image recording apparatus. Next, pull out the leading end of the photosensitive roll from the slit in the box, and place it between the feeding rollers along the guide surface of the feeding port in the paper feeding section of the recording device. The opening/closing lid is closed to make the interior a dark room, and the feeding operation of the photosensitive tube is started.

When recording an image, the photosensitive roll is pulled out from the container, fed, and cut by a cutting device to form a single cut sheet. This sheet-shaped photosensitive material (hereinafter referred to as photosensitive sheet) is exposed to After being exposed to light in the processing section, it is discharged outside the machine through a development processing section and a drying section.

On the other hand, since the leading end portion of the photosensitive roll is exposed to external light over the distance from the slit portion of the magazine to the feeding roller of the paper feeding section, the leading end portion of the photosensitive roll is cut by the cutting device in advance before image recording. It must be removed. Incidentally, the cutting length of the exposed (fogged) tip leader portion of this photosensitive roll is generally 100 to 400 mm.

[Problem that the invention seeks to solve]

In such a conventional roll photosensitive material feeding device,
A predetermined cutting length of the tip leader portion is set in advance, and a tip leader portion detection means (sensor), a feeding length measuring means, a means for comparing a set value and a measured value, etc. are provided, and thereby the cutting device is operated. is controlled. Such a means has the disadvantage that the device becomes complicated, there is a risk of malfunction due to noise in the electric circuit, and the cost of the device becomes high.

In addition, when this foggy leading edge part is cut to the above-mentioned predetermined length or when it is cut to a normal copy size, the leading edge foggy part passes through the entire process through the regular conveyance route and is finally discarded. As a result, processing of unusable photosensitive sheets caused exhaustion of the developing processing solution and wasted processing time.

[Means for Solving the Problems] The present invention solves the above-mentioned drawbacks of the conventional roll photosensitive material feeding device, and has a simple structure that reliably and accurately transfers the tip leader portion of the photosensitive roll. It is an object of the present invention to provide a roll photosensitive material feeding device that can cut and remove a photosensitive material into a predetermined length and start image recording.

The roll photosensitive material feeding device of the present invention that achieves this objective pulls out the roll photosensitive material from a container, feeds the roll photosensitive material, cuts it into a predetermined length to form a notebook, feeds it into a conveyance path, and performs image exposure. In the roll photosensitive material feeding device,
Cutting the tip leader portion of the roll photosensitive material to a length shorter than the predetermined cutting length and removing it from the conveyance path;
This feature is characterized by providing a discard mode for the leading end, in which the tip is accumulated in the discard section below.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

Note that the present invention is not limited to the embodiments of these examples.

FIG. 1 is a block diagram of a copying image forming apparatus (hereinafter referred to as copying apparatus) equipped with a roll photosensitive material feeding device according to the present invention.

The copying apparatus includes an image exposure section 1o, a paper feed section 20. A photosensitive material transport section (hereinafter simply referred to as the transport section) 30, a portion of the intermediate stocker 40, a development processing section 5o, a drying section 60. and a discharge section 70.

The reversal type photosensitive material used in the present invention is a photosensitive material in which a positive image is formed by exposure and development, and is used to obtain high-quality copied images, especially color copied images. Therefore, silver halide photographic light-sensitive materials are used,
gro8. Examples of such silver halide photographic materials include internal latent image type and other direct reversal type silver halide photographic materials.

Reversal type (reversal development type) silver halide photographic materials are suitable. Further, the support (base) of the silver halide photographic light-sensitive material may be opaque paper or the like or a transparent film.

Further, the silver halide photographic material may be either color or black and white. Furthermore, it is also applicable to light-sensitive materials other than the above-mentioned silver halide photographic light-sensitive materials.

The image exposure section 10 includes an original platen glass 11, a light source 12, a first
It consists of a scanning mirror 13, a second scanning mirror 14, a third scanning mirror 15, a lens 16, a fourth fixed mirror 17, and a fifth fixed mirror 18. A rod-shaped halogen lamp is used as the light source 12, and provides uniform exposure without uneven light distribution in the axial direction.

A first scanning unit consisting of a light source 12 and a first scanning mirror 13 moves parallel to the document table glass 1 and illuminates the document. At this time, the exposure width on the platen glass surface is 10 to 1
5 friends. Second scanning mirror 14. J: A second scanning unit consisting of a third scanning mirror I5 is mounted on a moving table and moves in the same direction as the first scanning unit and at half the moving speed of the first scanning unit. Further, the first scanning unit and the second scanning unit operate in synchronization with the speed at which the photosensitive material is conveyed by the conveying section 30. These synchronization operations can be performed using a known synchronization mechanism widely used in electrophotographic copying machines and the like.

On the other hand, the silver halide photographic material is formed into a roll and stored in the magazine 21 . The magazine 21 is removably installed at a predetermined position in the paper feed section 200 of the copy image recording apparatus. A roll of silver halide photographic light-sensitive material (hereinafter referred to as a photosensitive roll) R in the magazine 21 is sent to the conveying section 30 through the feeding section 22 .

Incidentally, 23 is a sensor such as a microswitch that detects the end of the photosensitive roll and issues a warning signal of insufficient storage capacity.

The photosensitive roll R inserted into the conveying section 30 is held between two pairs of feeding rollers 31 and 32 by rotation, and when it is fed a predetermined length, it is cut by a cutting device 33 to form a cut sheet. This cut sheet [.-shaped]-〇silvergenide photographic light-sensitive material (hereinafter referred to as a photosensitive sheet) S is transferred to the feeding roller 32.
It is fed by the upper and lower conveyor belts 34 that are in pressure contact with each other, and then the direction is changed at right angles and the conveyor rollers 3
5.36 intermediate position (imaging position) 37 is reached.

When the leading edge of the photosensitive sheet S passes the image forming position 37, the first scanning unit grips the document platen glass l in response.
At the same time, the second scanning unit also moves, and the scanning exposure light beam from these units passes through the lens 16, passes through the fourth mirror 17 and the fifth mirror 18, and then reaches the imaging position 37. A latent image is formed on the photosensitive sheet S. The above-mentioned exposure scanning is almost the same as that used in a known electrophotographic copying machine, etc., but the image is reversed by the final fifth mirror 18, and the latent image corresponding to the original is transferred to the photosensitive sheet S.
formed directly on top.

The photosensitive sheet S that has been scanned and exposed passes through the intermediate stock section 40, the development processing section 50, and the drying section 60, and is stored in the tray 71 of the discharge section 700, as in the above-described photographing operation.

The above is a normal copying process, but it is also used when loading a new magazine containing photosensitive rolls into the paper feed section 20, when the photosensitive rolls in the magazine 21 are used up and need to be replenished, or when other different types of photosensitive rolls are used. When replacing a roll, open the lid of the paper feed section, take out the built-in magazine 21, and place the magazine 21 containing new or replenishing photosensitive rolls or other types of photosensitive rolls on the mounting table 24 instead. Position.

Next, hold and pull out the exposed tip leader portion of the photosensitive roll, feed it into the conveying section 30 while following the guide surface of the feeding guide member 22 in the paper feeding section 20, and make it pinched by the feeding roller 31. , close the opening/closing cover and insert paper feed section 2.
The interior of 0 becomes a dark room.

Subsequently, when the electric feeding operation is started, the photosensitive roll is transported by the rotation of the feeding roller 31, and when it is further nipped by the next rotating feeding roller 32 and fed a predetermined length, it is transferred to the cutting device. 33, and the tip guide member becomes a cut sheet. Here, the cutting length L of the tip guide portion is determined by the A4 size of the desired photosensitive sheet S to be copied.
If the conveyance length is 210 mm, which is the length of the short side of A4 size, it is shorter than 210 mm, and the feeding roller 32 is shorter than 210 mm.
The distance between the lead-out part of the conveyor belt 34 and the introduction part of the conveyor belt 34 is set to be shorter than the distance between the lead-out part of the conveyor belt 34 and the lead-in part of the conveyor belt 34 .

Between the feeding roller 32 and the conveying belt 34, an upper guide plate 38A is provided above the photosensitive sheet S, and a lower guide plate 38B is provided below. One end of the lower guide plate 38B is close to the introduction part of the conveyor belt 34, and the other end extends below the feed roller 32, and the entire lower guide plate 38B is curved in an arcuate shape. Further, a tray 39 for storing waste photosensitive sheets is installed below the lower guide plate 38B.

The leading end portion of the photosensitive roll R, which is held and conveyed by the feeding rollers 31 and 32, is cut into the predetermined length L by the cutting device to form a cut sheet, which is further conveyed by the feeding rollers 32. Since the rear end of the cut sheet leaves the pressure contact position of the feeding roller 32 before the leading end of the cut sheet reaches the introduction part of the conveyor belt 34, the cut sheet falls onto the lower guide plate 38B and slides on the curved surface. It falls and is stored in the tray 39. Note that the lower guide plate 38B may be fixed or movable.

Here, if the fogged portion of the tip of the photosensitive roll is longer than the set force 7 and length L, it is set in advance to perform the above-mentioned cutting a plurality of times.

In this way, the fogged end portion is cut into shorter pieces and stored in the tray 39, so that it is then transferred to the intermediate stock section 4o, the development processing section 50, and the drying section 6 via the regular conveyance path.
It never passes through 0.

Next, FIG. 2 is a block diagram showing another embodiment according to the present invention.

In the figure, a movable upper guide plate 138A and a movable lower guide plate 138 are located between the feed roller 32 and the conveyor belt 34.
B is provided. The upper guide plate 138A and the lower guide plate 138B can be tilted downward by actuation of a drive source such as a rotary solenoid and a cam or lever.

Place the magazine 21 containing the photosensitive roll R on the mounting table 24 of the paper feed section 2°, position it, pull out the leading end of the photosensitive roll R, feed it into the paper feed guide member 22, close the opening/closing lid, and place the photosensitive roll R on the mounting table 24 of the paper feed section 2°. After making the interior of 20 into a dark room state, the tip disposal mode is set. This mode setting may be automatic in conjunction with the opening/closing operation after loading the magazine, or may be manual setting.

By setting this mode, the tips of the upper guide plate 138A and the lower guide plate 138B are lowered and inclined.

Subsequently, paper feeding starts, and the leading end of the photosensitive roll is transported, and is fed out by a cutting length L, which is set shorter than the length of the desired copy size, and then stopped once.
The cutting device 33 is activated to cut the tip leader portion. The sheet-shaped photosensitive sheet with a length L is placed on the upper guide plate 1.
38A and the lower guide plate 138B,
It is stored in a tray 139.

The exposed length of the leading edge guide portion of the photosensitive roll R due to miscellaneous light depends on the structure of the copying device, the structure of the slit portion of the magazine for leading out the photosensitive roll, and the storage condition of the photosensitive roll, but for example, ~400m1+.

Here, if the copy size is A3 size or A4 size, the minimum length to cut into a sheet is 210 mm on the short side of A4 size, so a shorter length, for example 200 mm, is the set length for tip cutting. If L is selected and the above-mentioned large fog length is 400 mm, cutting in the tip discard mode only needs to be repeated twice. Furthermore, if L = 150 mm is set, cutting and eliminating the tip portion by 4 oomm may be performed three times.

like this? After cutting and discarding the fogged tip part, the tip discard mode is turned OFF', the upper guide plate 138A and the lower guide plate 138B automatically rise and return to their original positions, and at the same time the tip cut feed (lengthwise) is turned off. (L) mechanism can also be released to allow cutting of a predetermined copy size (for example, A3 size, A4 size).

〔Effect of the invention〕

As explained in detail above, the roll photosensitive material feeding device according to the present invention has a simple structure and can reliably and accurately cut, remove, and collect the miscellaneous light fog at the leading end of the photosensitive roll at a predetermined length. I can do it. In addition, this prevents the unusable fogged portion from being sent to the development processing section, so it does not interfere with the development process, prevents wasteful deterioration of the development solution, and allows prompt exposure processing for copying. It became so.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a copying image forming apparatus equipped with a roll photosensitive material feeding device according to the present invention. FIG. 2 is a block diagram showing another embodiment according to the present invention.

Claims (1)

[Claims] In a roll photosensitive material feeding device that pulls out a roll of photosensitive material from a container containing it, feeds it, cuts it to a predetermined length to form a sheet, feeds it into a conveyance path, and exposes an image, a leader at the tip of the roll of photosensitive material is provided. A roll photosensitive material feeding device, characterized in that it is provided with a tip discard mode in which the portion is cut shorter than the predetermined cutting length, removed from the conveyance path, and accumulated in a discard section below.