JP2001058732A - Photo-sensitive material storage magazine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photosensitive material storage magazine equipped with a mechanism to send out and rewind a photosensitive material and capable of suppressing the vibration generated when the material is sent out. SOLUTION: A long stretching paper is taken up in a roll form and stored in a magazine 5, which is equipped with a first drive roller 9 and a first pressure contacting roller 10 installed in the paper sendout part 15 to perform sending-out of the paper and its rewinding and a second drive roller 32 installed contacting with the periphery R of the paper roll to perform sending-out of the paper and its rewinding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive material storage magazine in which a long photosensitive material is wound and stored in a roll shape, and more particularly to an improvement in a photosensitive material driving mechanism.

[0002]

2. Description of the Related Art A long photosensitive material is wound and stored in a roll shape in a photosensitive material magazine, and the long photosensitive material is sent out from a delivery section to an exposure section. The image is exposed at. The long photosensitive material is cut into a predetermined print size before or before passing through the exposure unit. When the exposure is not performed for a long time, the fed photosensitive material is rewound into the photosensitive material storage magazine.

Accordingly, a magazine for feeding and rewinding the photosensitive material is required in the magazine for containing the photosensitive material. Conventionally, a driving roller is provided at the feeding section of the photosensitive material and feeds and rewinds the photosensitive material. Mechanism (first
It corresponds to a drive roller mechanism. ) And a core drive unit for driving the core of the roll-shaped photosensitive material.

Since the diameter of the roll changes when the photosensitive material is wound up, the moving speed of the photosensitive material at the outer peripheral portion of the roll is constant even if the rotation speed (angular speed) of the core is constant. Will change in accordance with The degree of this change is about three times as large when the roll diameter becomes the maximum diameter and when the roll diameter becomes the minimum diameter. On the other hand, a drive roller mechanism provided in the feeding section moves the photosensitive material at a constant speed. Therefore, in order to rewind the long photosensitive material without slack, it is necessary to absorb the difference in the moving speed, and therefore, a torque limiter is provided in the core driving unit.

[0005]

However, the provision of the torque limiter not only complicates the mechanism, but also causes the torque limiter to become a driving resistance and cause vibration when the photosensitive material is fed. Had become. In particular, while conveying the photosensitive material at a constant speed,
In the case of performing digital exposure for forming each line, image quality is deteriorated due to vibration at the time of feeding of the photosensitive material, and improvement has been desired. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a photosensitive material storage magazine provided with a photosensitive material feeding / rewinding mechanism capable of suppressing vibration during feeding of the photosensitive material.

[0006]

In order to achieve the above object, a photosensitive material accommodating magazine according to the present invention is provided in which a long photosensitive material is wound and accommodated in a roll shape and provided at the photosensitive material delivery section. A first drive roller mechanism for feeding and rewinding the photosensitive material, and a drive roller provided to be in contact with a roll-shaped outer peripheral portion of the photosensitive material;
A second drive roller mechanism for feeding and rewinding the photosensitive material.

According to this structure, the first driving roller mechanism provided at the photosensitive material feeding section and the second driving roller mechanism provided such that the driving roller is in contact with the roll-shaped outer peripheral portion of the photosensitive material.
The photosensitive material can be sent out and rewound by the drive roller mechanism. The moving speed (transport speed) of the photosensitive material by the first drive roller mechanism can be set to be the same as the moving speed of the photosensitive material by the second drive roller mechanism. Therefore, since a mechanism for absorbing the speed difference is not required, it is not necessary to provide a torque limiter. As a result, it was possible to provide a photosensitive material storage magazine provided with a photosensitive material feeding / rewinding mechanism capable of preventing the mechanism from being complicated due to the provision of the torque limiter and suppressing vibration during feeding of the photosensitive material. .

As a preferred embodiment of the present invention, the first
The drive roller mechanism and the second drive roller mechanism may be driven by a common drive source. Compared to a configuration in which a drive source for driving the first drive roller mechanism and a drive source for driving the second drive roller mechanism are separately provided,
The mechanism can be simplified. Note that the drive source does not necessarily need to be provided in the photosensitive material storage magazine, and it is preferable that a driving force be supplied from a drive source provided in a photographic processing apparatus to which the photosensitive material storage magazine is attached.

In another preferred embodiment of the present invention, the driving roller of the second driving roller mechanism is urged by a spring to the outer peripheral portion of the roll, and the outer peripheral portion of the outer peripheral portion of the roll is controlled by a change in outer diameter. One configured to be able to follow is given.

In order to keep the driving roller of the second driving roller mechanism in constant contact with the outer peripheral portion of the roll, a mechanism for following the change in the outer diameter of the outer peripheral portion is required. By biasing the drive roller toward the outer peripheral portion, a mechanism for following the drive roller with a simple configuration without increasing the cost can be realized.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a magazine for accommodating photosensitive material according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of a photographic processing apparatus 1 to which a paper magazine (corresponding to a photosensitive material storage magazine) is attached.

<Configuration of Photo Processing Apparatus> Photo processing apparatus 1
The first magazine 5 and the second magazine 5 are provided with a magazine base 3 on a body frame 4 and rotatably support a pair of papers 2 (corresponding to photosensitive material) wound in a roll shape around a roll axis O. A state in which the two magazines 6 are arranged side by side on the magazine base 3 and a transporting means for transporting the paper 2 is provided, and the paper 2 is unwound from the first magazine 5;
The first magazine 5 and the image forming unit 7 for printing the paper 2 from the second magazine 6 are disposed below the first magazine 5 so as to be freely switchable between the first magazine 5 and the second magazine 6. I have.

The transport means 8 is provided in the first and second magazines 5 and 6 with a first drive roller mechanism 24 for nipping and transporting the paper 2 between the first drive roller 9 and the first pressure roller 10. The paper 2 from the second magazines 5 and 6 is applied to the apparatus-side drive roller 11 and the plurality of apparatus-side pressure rollers 1.
An apparatus-side drive roller mechanism 25 for nipping and transporting the apparatus 2 is provided on the body frame 4, and a plurality of delivery rollers 21 and the like are provided on the lower side of the apparatus-side drive roller mechanism 25.

The paper 2 is fed from the first and second magazines 5 and 6 by switching the direction of rotation of the first drive roller / device-side drive rollers 9 and 11 in the forward and reverse directions. It is configured to be freely switchable between a state of rewinding to the magazines 5 and 6 side.

Paper guide 1 for paper 2 between first drive roller mechanism 24 and apparatus-side drive roller mechanism 25
3 is provided. A cutter 23 for cutting the paper 2 is provided on the lower side of the apparatus-side drive roller mechanism 25.

The image forming unit 7 sequentially exposes and forms a digital image line by line while transporting the paper 2 at a constant speed.
D (digital mirror device), a laser exposure apparatus, a CRT exposure apparatus, and the like are given as examples.

<Structure of Paper Magazine> FIG. 2 is a diagram showing the internal structure of the paper magazine with the case closed, and FIG. 3 is a diagram showing the internal structure of the paper magazine with the case opened. FIG. 4 is a perspective view showing a main part of a paper driving mechanism. Since the first magazine 5 and the second magazine 6 have the same configuration, they will be described as the first magazine 5.

The first magazine 5 is composed of a first case member 19 and a second case member 20, in which the long paper 2 is wound in a roll. Roll R
Is provided with a hollow core 17 at the center thereof, and a core 18 is inserted into a hollow portion of the core 17.

A paper outlet 16 for feeding the paper 2 to the outside of the magazine, a paper outlet 16
, A first drive roller 9 and a first pressure roller 10 are provided in the vicinity of. As shown in FIG. 4, the first drive roller 9 is supported on a drive roller support shaft 22 via a one-way clutch (the structure is not shown). At both ends of the drive roller support shaft 22, an input gear 26 and a first
A transmission gear 27 is provided. The input gear 26 and the driving roller support shaft 22 are integrally connected, and a driving force from a driving source (motor) provided on the photographic processing apparatus 1 side is input. The first transmission gear 27 is supported by the drive roller support shaft 22 via a one-way clutch (the structure is not shown). Further, a toothed pulley 28 is fixed to the drive roller support shaft 22 at a position adjacent to the first drive roller 9.

The first pressure roller 10 is mounted on a pressure roller support shaft 29 and is mounted on the pressure roller support shaft 2.
9, the second transmission gear 30 and the bearing 3
1 is provided. The first transmission gear 27 and the second transmission gear 30 are assembled so as to mesh with each other.

The meaning of the one-way clutch will be described. When the paper 2 is fed, the first pressure roller 10 functions as a driving roller, and the first driving roller 9
Function as a free roller. When the paper 2 is rewound, the first pressure roller 10 functions as a free roller and the first drive roller 9 functions as a drive roller. A one-way clutch is required to make the same roller a drive roller or a free roller.
More specifically, when the paper 2 is transported,
Although the paper 2 is transported by both the first drive roller mechanism 24 and the apparatus-side drive roller mechanism 25, the paper 2 is transported between the first drive roller mechanism 24 and the apparatus-side drive roller mechanism 25.
Must not be loosened. Therefore, when sending out the paper 2, the transport speed of the paper 2 by the device-side drive roller mechanism 25 is set to be slightly higher than the transport speed by the first pressure roller 10, and when rewinding the paper 2, the first drive roller 9, the transfer speed is
The transport speed is set to be slightly higher than the transport speed by the device-side drive roller mechanism 25. The outer diameters of the first drive roller 9 and the first pressure roller 10 are slightly different from each other, thereby creating a difference in transport speed.

The second drive roller mechanism 23 includes a second drive roller 32 arranged to be in pressure contact with the outer peripheral portion of the roll R, a support frame 33 for supporting the second drive roller 32, and three teeth. Pulleys 34a, 34c, 34
d, one bearing roller 34b, a toothed pulley, a second drive transmission belt 35 wound around the bearing rollers 34a to 34d, a swing support shaft 36 provided coaxially with the toothed pulley 34a, Another toothed pulley 37 provided on the moving shaft 36, and toothed pulleys 28 and 3
7 and a first drive transmission belt 38 wound around.

As described above, the power from the drive source provided on the apparatus side is transmitted not only to the first drive roller 9 but also to the second drive roller 32 via the first and second drive transmission belts 38 and 35. Are also driven. The moving speed of the paper 2 by the first drive roller 9 and the second drive roller 32 is set to be the same or almost the same.

As shown in FIG. 4, the second drive roller 32
The second drive roller 32 is configured so that the pulley 34c with the teeth rotates between the two rollers. The swing shaft 36 has two mounting members 4
Oa is fixed to the second case member 20.

The second drive roller 32 is provided with a spring 39 so as to always press against the outer peripheral portion of the roll R (see FIG. 4). The spring 39 has a shaft 4
3 are inserted, and both ends of the shaft 43 are supported by mounting members 40a and 40b. The action portion 39a of the spring 39 is in contact with the support frame 33, and urges the second drive roller 32 against the roll R. The second drive roller 32 swings (rotates) around a swing support shaft 36.
It is possible. In FIG. 2, the second drive roller 32 indicated by a solid line is when the outer diameter of the roll R is the maximum diameter, the two-dot chain line is when the outer diameter of the roll R is the minimum diameter, and the spring 39 is provided. Accordingly, the second drive roller 32 can follow the change in the roll diameter. Also, the spring 39
The cost can be minimized because it can be followed only by providing

A turn roller 41 is provided on the way of the paper 2 being pulled out from the roll R and reaching the first drive roller mechanism 24, and smoothly guides the paper 2 to the first drive roller mechanism 24.

When the paper 2 is fed, the paper 2 can be fed to the photographic processing apparatus 1 by rotating the first pressure roller 10 and the second drive roller 32 in the feeding direction. When rewinding the paper 2, the paper 2 can be wound into the first magazine 5 by rotating the first drive roller 9 and the second drive roller 32 in the rewind direction. The feeding speed and the winding speed of the first driving roller 9 (the first pressure roller 10) and the second driving roller 32 are set to be the same or almost the same. By making the speed the same, it is possible to prevent the occurrence of vibration at the time of feeding.

The second drive roller 32 is disposed near the place where the paper 2 is drawn in the tangential direction on the outer periphery of the roll R (the place where the paper 2 is separated from the roll R). This prevents the paper 2 from becoming loose at this portion. Therefore, it is possible to prevent the paper 2 from being rubbed against the inner surfaces of the first or second case members 19 and 20 and causing scratches.

As can be seen from FIG. 3 in which the case is opened, most of the drive roller mechanism is attached to the second case member 20 side, so that it is not obstructive when replacing the paper 2. No.

It is preferable that a frictional force be applied between the inner surface of the core 17 and the core 18 in order to apply back tension to the paper 2. For example,
The core 18 is subjected to iris knurling or straight knurling in the sliding direction. However, in the case of the iris knurl, a straight knurl is preferable because the frictional force may increase and cause vibration at the time of feeding.

<Another Embodiment> The present invention can be applied to photosensitive materials other than paper.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a photographic processing apparatus to which a paper magazine is attached.

FIG. 2 is an internal configuration diagram of a paper magazine with a case closed.

FIG. 3 is an internal configuration diagram of a paper magazine with a case opened.

FIG. 4 is a perspective view showing a driving roller mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Photo processing apparatus 2 Paper (photosensitive material) 5 1st magazine (photosensitive material storing magazine) 6 2nd magazine (photosensitive material storing magazine) 9 1st drive roller 10 1st pressure bonding roller 15 sending part 23 2nd drive roller mechanism 24 First drive roller mechanism 32 Second drive roller 39 Spring R Roll

Claims (3)

[Claims] 1. A photosensitive material storage magazine in which a long photosensitive material is wound and housed in a roll shape, and is provided in a photosensitive material delivery section, and performs delivery and rewind of the photosensitive material. A photosensitive device comprising: a first drive roller mechanism; and a second drive roller mechanism provided with a drive roller in contact with a roll-shaped outer peripheral portion of the photosensitive material, for feeding and rewinding the photosensitive material. Material storage magazine. 2. The magazine according to claim 1, wherein the first drive roller mechanism and the second drive roller mechanism are driven by a common drive source. 3. The drive roller of the second drive roller mechanism is urged against the roll-shaped outer peripheral portion by a spring, and is configured to be able to follow a change in the outer diameter of the roll-shaped outer peripheral portion. The magazine for accommodating a photosensitive material according to claim 1.