JP2001117177A - Photosensitive material housing magazine for photographic processing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the energy consumed by a drive section of rollers while preventing the unwinding and rotating of a rolled photosensitive material by impact, etc., when a magazine mounted with the rolled photosensitive material is carried to the main body side of a photographic processing machine or is mounted at the main body of the photographic processing machine. SOLUTION: A magazine body 11 is provided with a pair of the rollers 12 and 13 capable of holding the rolled photosensitive material 1 in the magazine body and extending and unwinding the photosensitive material and is provided with a torque limiter 19 for imparting the load against the rotation of at least one roller 12 between at least one roller 12 and the magazine body 11. A oneway clutch 20 is interposed between the torque limiter 19 and at least one roller 12 and at least one roller 12 is constituted rotatably in the extending direction of the photosensitive material 1 without receiving the load from the torque limiter 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magazine body having a pair of rollers which can be fed and rewinded while sandwiching a roll of photosensitive material in the magazine body. A photosensitive material storage magazine in a photographic processor provided with a torque limiter for applying a load to the rotation of at least one of the rollers.

[0002] In a photographic processor, when the operation is stopped for a long time, the photosensitive material is rewound into the magazine body.
This prevents a trace of pressure contact of a roller or the like in the main body of the photographic processing machine from remaining on the photosensitive material.

[0003]

2. Description of the Related Art When a photosensitive material is mounted on an empty photosensitive material storage magazine (hereinafter abbreviated as "magazine") detached from a photographic processing machine body, for example, an operator opens a magazine body having a split structure on a workbench. Then, the roll-shaped photosensitive material is supported by the photosensitive material supporting portion of the magazine body in the dark bag, and the magazine body is closed, so that the front end side of the photosensitive material can be sandwiched between the pair of rollers to feed out the photosensitive material. I have to.

[0004] Then, the magazine taken out of the dark bag is transported to the main body of the photographic processing machine and attached to the main body of the photographic processing machine. The material may be subject to rotational force in the rewind direction.

[0005] In this case, if the pinching force of the pair of rollers with respect to the photosensitive material is weak, the rotating force rotates the roll-shaped photosensitive material and the pair of rollers rotates, so that the photosensitive material is rewound and the photosensitive material is unwound. The leading end is disengaged from the pair of rollers, and the photosensitive material must be re-mounted so as to be sandwiched between both rollers.

Therefore, conventionally, as a means for preventing the photosensitive material from coming off the pair of rollers, a torque limiter is provided between at least one of the rollers and the magazine body.
In either case of feeding out and rewinding of the photosensitive material,
At least one roller was given a load for rotation.

[0007]

According to the above-mentioned conventional construction, a load for rotation is applied to at least one of the rollers in both the feeding and rewinding of the photosensitive material. A large force was required for feeding and rewinding of the photosensitive material by the roller after being mounted on the main body of the photographic processing machine, and a large amount of energy was consumed by the drive unit of the roller.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for transporting a magazine loaded with a roll-shaped photosensitive material to the main body of a photographic processing machine or for mounting the magazine on the main body of the photographic processing machine. Thus, it is possible to reduce the energy consumed by the drive unit of the roller while preventing the roll-shaped photosensitive material from rewinding and rotating.

[0009]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Structure] In the photosensitive material magazine of the photographic processing machine described at the beginning, a one-way clutch is interposed between the torque limiter and at least one roller so that the at least one roller is separated from the torque limiter. The photosensitive material is rotatable in the feeding direction without receiving the load.

[A] [A] When transporting a magazine loaded with a roll-shaped photosensitive material to the main body of the photographic processing machine or attaching the same to the photographic processing machine main body, the roll-shaped photosensitive material in the magazine main body is subjected to impact or the like. When the at least one roller tries to rotate in the rewinding direction of the photosensitive material by receiving the rotational force in the rewinding direction, the one-way clutch is locked and receives the load from the torque limiter.

Thus, even if the magazine receives an impact during transportation or the like, the roll-shaped photosensitive material in the magazine body can be prevented from being rewound, and the leading end of the photosensitive material can be prevented from coming off the pair of rollers. .

(B) After the magazine is mounted on the main body of the photographic processing machine, the at least one roller receives a rotational load from the torque limiter in the unlocked state of the one-way clutch in the direction in which the photosensitive material is fed. You can rotate without.

When rewinding the photosensitive material, at least one of the rollers rotates in the rewinding direction under a load from the torque limiter, and the rotation in the rewinding direction is generally smaller than the rotation in the unwinding direction. -The frequency of rotation is low.

[Effect] Therefore, the above operations [A] and [B]
When transporting the magazine containing the roll-shaped photosensitive material to the main body of the photo processing machine or attaching it to the main body of the photo processing machine, the roll-shaped photosensitive material is prevented from being rewound and rotated by an impact or the like. Energy consumption of the drive unit can be reduced.

The structure, operation and effect of the invention according to claim 2 are as follows.

[Structure] In the structure according to the first aspect of the present invention, one end of a rotation shaft of the at least one roller is
A cap-shaped knob for artificially rotating at least one of the rollers is provided concentrically with the rotating shaft, and the torque limiter and the one-way clutch are incorporated in the knob.

[Function] [C] In addition to the same function as the function of the first aspect, the following function can be obtained.

[D] For example, at the time of maintenance, the knob is manually rotated to rotate at least one of the rollers.

The knob is formed in a cap shape concentric with at least one of the rollers, and the torque limiter and the one-way clutch are built into the knob by effectively utilizing the space in the cap. The structure around at least one roller can be made compact.

[Effects] Therefore, in addition to the effects similar to those of the first aspect, the structure can be simplified.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a photographic processor provided with a printing unit 2 and a developing unit 3.

The printing unit 2 includes a first magazine 8 for storing the photographic paper 1 (corresponding to a photosensitive material) wound in a roll.
And second magazine 7 (both correspond to magazines containing photosensitive material)
Is provided in the main body 4 of the photographic processor, and is configured to be freely switchable between a state in which the photographic paper 1 is fed from the first magazine 8 and a state in which the photographic paper 1 is fed from the second magazine 7, and a cutter 6 for cutting the photographic paper 1 to a print size. , Light source 10, mirror tunnel 32, negative carrier 33, lens unit 3
4 and an exposure table 9 are provided on the photographic processor body 4.

The printing paper 1 which has been printed and exposed is conveyed by the conveying device and sent to the developing section 3.

Next, the first magazine 8 will be described (the second magazine 7 has the same structure as the first magazine 8).

As shown in FIGS. 2 and 3, the magazine body 1
A drive roller 12 and a pressure roller 13 capable of sandwiching and feeding and rewinding the roll-shaped photographic paper 1 in 1 are provided near the photographic paper discharge port 5 of the magazine body 11.

The drive roller 12 includes a drive shaft 14
(Corresponding to a rotating shaft), and the drive shaft 14 is linked to an electric motor as a drive unit via an input gear 15 at one end thereof.

A first intermediate gear 16 is provided near the input gear 15 of the drive shaft 14, and the first intermediate gear 16 is engaged with a second intermediate gear 18 provided on a driven shaft 17 on the side of the pressure roller 13. The pressure roller 13 is configured to rotate with the rotation of the roller 12.

A torque limiter 19 for applying a load to the rotation of the drive roller 12 is provided between the other end of the drive shaft 14 and the magazine main body 11, and a torque limiter 19 is provided between the torque limiter 19 and the other end of the drive shaft 14. The driving roller 12 is configured to be rotatable in the feeding direction of the photographic paper 1 without receiving the load from the torque limiter 19 with a one-way clutch 20 interposed therebetween.

To constitute the torque limiter 19, a bearing 21 rotatably fitted to the other end of the drive shaft 14 is fitted inside a fitting hole of the magazine body 11 so as to be relatively non-rotatable. Spring 22 concentric with 14
The spring case 25 is rotatably fitted on the drive shaft 14, and the radially extending first protrusion 26 protruding from one end of the spring case 25 is formed on one end of the bearing 21. Engage with the first engagement groove along the radial direction, and can rotate relative to the spring case 25,
Further, an inner ring 28 for externally fitting the spring 22 is externally fitted to the drive shaft 14 so as to be relatively rotatable.

The bearing 21 has a cylindrical shape and is provided with a flat cut portion on the periphery thereof, and the fitting hole is formed in a shape corresponding to the flat cut portion. Disabled.

A radially extending second protrusion 30 formed on one end of the clutch housing 29 of the one-way clutch 20 is fitted to a radially extending second engagement groove formed on one end of the inner ring 28. It is engaged.

At the other end of the drive shaft 14, a cap-shaped knob 31 for manually rotating the drive roller 12 is provided, and the drive shaft 14 is placed in a state of covering the torque limiter 19 and the one-way clutch 20. It is provided concentrically (that is, the torque limiter 19 and the one-way clutch 20 are built in the knob 31).

According to the above structure, the roll-shaped photographic paper 1
When transporting the first magazine 8 containing the photographic paper to the photoprocessing machine main body 4 side or attaching the first magazine 8 to the photoprocessing machine main body 4, the roll-shaped printing paper 1 in the magazine main body 11 is rotated in the rewinding direction by an impact or the like. , The one-way clutch 20 is locked, and the drive shaft 14 is
-A rotation load is received from the torque limiter 19 in an attempt to rotate integrally with the inner ring 28.

Thus, even if the first magazine 8 receives an impact during transportation or the like, the roll-shaped photographic paper 1 in the magazine body 11 can be prevented from being rewound, and the leading end of the photographic paper 1 is driven by the drive roller 12. And the pressure roller 13 can be prevented from coming off.

After the first magazine 8 is mounted on the main body 4 of the photographic processing machine, the drive roller 12 applies a load to the rotation from the torque limiter 19 in the unlocking state of the one-way clutch 20 in the feeding direction of the photographic paper 1. Can rotate without receiving.

That is, the drive shaft 14 freely rotates with respect to the clutch housing 29 and the inner ring 28.

When the photographic paper 1 is rewound, the driving roller 21
Rotates in the rewinding direction under a load from the torque limiter 19, and the rotation in the rewinding direction generally has a smaller amount and frequency of rotation than the rotation in the unwinding direction.

[Another Embodiment] In addition to the structure of the first embodiment, a torque limiter 19 is provided between the pressure roller 13 and the magazine body 11, and the one-way clutch 20 is provided.
May be interposed between the torque limiter 19 and the pressure roller 13 so that the pressure roller 13 can rotate in the feeding direction of the printing paper 1 without receiving the load from the torque limiter 19.

Further, the torque limiter 19 is not provided between the drive roller 12 and the magazine body 11, but is provided between the pressure roller 13 and the magazine body 11, and the one-way clutch 20 is provided between the torque limiter 19 and the magazine body 11. The pressure roller 13 may be interposed between the pressure roller 13 and the pressure roller 13 so as to be rotatable in the feeding direction of the printing paper 1 without receiving the load from the torque limiter 19.

The photosensitive material may be other than photographic paper.

[Brief description of the drawings]

FIG. 1 is a schematic overall side view of a photographic processor.

FIG. 2 is a perspective view showing the structure of a driving roller and a pressure roller.

FIG. 3 is a sectional view showing a torque limiter and a one-way clutch provided on a driving roller.

[Explanation of symbols]

 Reference Signs List 1 photosensitive material 11 magazine body 12, 13 roller 14 rotating shaft 19 torque limiter 20 one-way clutch

Claims (2)

[Claims] 1. A pair of rollers, which are capable of nipping and rewinding a roll-shaped photosensitive material in a magazine main body, are provided in the magazine main body, and at least one of the rollers is disposed between at least one roller and the magazine main body. A photosensitive material storage magazine in a photographic processing machine provided with a torque limiter that applies a load to the rotation of a roller, wherein a one-way clutch is interposed between the torque limiter and at least one roller, and the at least one roller is A photosensitive material storage magazine in a photographic processing machine which is configured to be rotatable in the feeding direction of the photosensitive material without receiving the load from the torque limiter. 2. A cap-shaped knob for artificially rotating at least one of the rollers is provided at one end of a rotation shaft of the at least one roller, the cap-shaped knob being coaxial with the rotation shaft. 2. A magazine according to claim 1, wherein a limiter and a one-way clutch are incorporated in said knob.