JP2002249255A - Sheet member carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photographic paper carrying device capable of freely adjusting the balance of pressure contact force of a pressure contact roller against a carrying roller. SOLUTION: In this photosensitive material carrying device which is provided with the carrying roller and the pressure contact roller brought into pressure contact with the carrying roller through an elastic energizing means, and is structured so as to carry a photosensitive material by both rollers, a pressure contact force adjusting mechanism to adjust the balance of the pressure contact force of the pressure contact roller against the carrying roller is provided, and thereby the balance of the pressure contact force against the carrying roller in the right and left of the axial direction of the pressure contact roller is made adjustable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport device for transporting photographic paper mainly in a photographic processor.

[0002]

2. Description of the Related Art Generally, a transport device mounted on a photographic processing machine includes a transport roller rotated by a motor, and a pressure roller which is pressed against the transport roller and rotates.
Each of these rollers is rotatably supported by a frame via a shaft, and an elastic urging mechanism including a spring member is interposed between the shaft of the pressing roller and the frame. The roller surface of the roller is elastically pressed against the roller surface of the transport roller, and the rotation of these rollers causes the photographic paper, which is a sheet-like member, to be transported by being sandwiched between the rollers.

[0003] The pressure contact roller releases the pressure contact with the transport roller by the operation of the pressure contact release mechanism. The pressure contact release mechanism is rotatably attached to the shaft end of the shaft supporting the pressure contact roller. A roller provided, an L-shaped pressure release arm for pushing the roller in one direction, and a pressure release cam for swinging the pressure release arm. The pressure release arm is operated by the operation of the pressure release cam. Is pivoted to move the driven shaft against the elastic urging mechanism to release the pressure contact of the pressure roller against the transport roller.

In a photographic processor, image data is printed on a photographic paper conveyed by the above-described conveying device by line exposure.

[0005]

However, in the above-described conveying apparatus, both rollers, a frame for assembling these rollers, a bearing member for rotatably supporting the rollers on the frame, etc., and a processing error with respect to the frame. The drive roller and the pressure contact roller are not arranged in parallel due to a roller assembly error and the like, so that the roller surface of the pressure contact roller does not press against the roller surface of the transport roller with an equal force, and the axial direction of the roller is reduced. The pressing force may be different between the left and right.

In particular, in a transfer apparatus provided with the above-mentioned elastic urging mechanism and a pressure releasing mechanism for operating the pressure roller against the elastic urging mechanism, the space for disposing various components such as the above-mentioned pressure releasing arm is provided. In other words, since it is impossible to arrange these components in the transport path, the pressure release mechanism must be disposed at the shaft end of the shaft supporting the pressure roller. On the other hand, in order to smoothly operate the pressure release mechanism, it is necessary to provide an elastic urging mechanism adjacent to the pressure release mechanism.

However, as described above, when the elastic urging mechanism is disposed at both ends in the axial direction of the shaft, the shaft is easily bent by the elastic force of the elastic urging mechanism, and the above-mentioned pressing force of the roller in the left and right directions in the axial direction is reduced. It becomes even more unbalanced.

The photographic paper conveyed by both rollers is meandered on the conveyance path or conveyed obliquely with respect to a predetermined conveyance direction due to the imbalance of the pressing force. In this case, there is a problem that high-quality photographic processing cannot be performed.

SUMMARY OF THE INVENTION The present invention has been developed in view of the above circumstances, and has as its object to convey a sheet-like member in which the balance of the pressing force of the pressing roller against the conveying roller can be freely and easily adjusted. It is to provide a device.

[0010]

In order to achieve the above object, the invention according to claim 1 comprises a transport roller and a pressure roller which presses against the transport roller via elastic urging means. In a sheet-like member conveying device configured to convey a sheet-like member by a roller, at least one of the conveying roller and the pressing roller is provided with a pressing-contact force adjusting unit that adjusts a balance of a pressing force of the pressing roller against the conveying roller. It is.

According to a second aspect of the present invention, the pressing force adjusting means according to the first aspect is provided on each of both sides of the pressing roller so that the pressing force balance of the pressing roller with respect to the transport roller in the left and right directions in the axial direction can be adjusted. That is.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sheet-like member conveying apparatus according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 schematically shows a photographic processor on which a sheet-like member conveying apparatus according to the present invention is mounted.

The photographic processor shown in FIG. 1 is for printing image information of each frame image photographed on a developed film or image information photographed by a digital camera onto a photographic paper P. Inside, two paper magazines 2
, An exposure device 3 using a laser beam, and a transport device 4 including five transport units 41 to 45.

Each paper magazine 2 stores a roll of photographic paper P, which is a sheet-like member.

Although not shown, the exposure device 3 scans the laser beam continuously in one direction with a laser beam irradiating unit for irradiating a laser beam, a mirror unit for reflecting the beam radiated from the laser beam irradiating unit. And a polygon mirror for scanning the photographic paper P by scanning the polygon mirror with image light emitted from a laser irradiating unit based on digital image data.

The exposure apparatus 3 is not limited to the laser beam system described above, but may be an exposure system such as a PLZT shutter system, a fluorescent beam system, or a liquid crystal shutter system, and an arbitrary system is selected according to specifications. be able to.

Each transport unit 41 constituting the transport device 4
Reference numerals 45 to 45 denote a conveying roller 5 that is rotationally driven via a roller driving motor (not shown), such as a first conveying unit 41 also shown in FIGS. And a pressure contact roller 6 that presses against and rotates.

The first transport unit 41 in the above transport device
In this configuration, two transport rollers 5 are provided at predetermined intervals in the longitudinal middle portion of the drive shaft 51, and both longitudinal ends of the drive shaft 51 are connected to the first frame via bearings 52. 7a rotatably supported.

The pressing roller 6 in the first transport unit 41 is provided at an intermediate portion in the longitudinal direction of the driven shaft 61, and both ends in the longitudinal direction of the driven shaft 61
It is rotatably supported by the frame 7b via a bearing 62,
An elastic biasing mechanism 63 is interposed between the bearing 62 and the second frame 7b.

The elastic biasing mechanism 63 has a coil spring (not shown) provided inside the holder 63a, and one end in the length direction of the coil spring is elastically contacted with the outer peripheral surface of the driven shaft 61, and the elastic spring mechanism 63 The roller surface 60 of the pressure roller 6 is pressed against the roller surface 50 of the transport roller 5 via the driven shaft 61 by the spring reaction force.

The second frame 7b has a guide frame portion 71b for guiding photographic paper, and a support frame portion 72b bent from both ends in the width direction of the guide frame portion 71b.
, And the driven shaft 61 is rotatably supported via a bearing 62 through the support frame portion 72b. The second frame 7b has one end in the length direction pivotally supported at one end in the length direction of the first frame 7a via the support shaft 70.

The pressure contact roller 6 is released from the pressure contact with the transport roller 5 by the operation of the pressure contact release mechanism 10.

As shown in FIG.
Roller 1 rotatably provided at the shaft end of driven shaft 61
1, an L-shaped pressure releasing arm 12 for pushing the roller 11 in one direction, a roller 13 rotatably supported at one end of the pressure releasing arm 12, and a pressure releasing arm 12 centered on a pivot 14. 4 is rotated by 90 degrees from the state shown in FIG. 4, whereby the pressure release arm 12 is rocked, and the roller 11 and the driven shaft 61 are moved. 4 is moved rightward in FIG. 4 against the above-mentioned elastic urging mechanism 63, so that the pressing of the pressing roller 6 against the transport roller 5 is released.

Paper magazine 2 and first transport unit 4
A cutter 46 for cutting photographic paper drawn from the paper magazine 2 is disposed between the paper magazine 1 and the paper magazine 2.

Incidentally, of the five transport units described above,
The first transport unit 41 is disposed between each of the paper magazines 2 and the exposure device 3, and transports the photographic paper P cut to a predetermined size by the cutter 46 toward the exposure device 3. ing.

The second transport unit 42 is disposed on the downstream side of the first transport unit 41 so that its transport path is located on the optical axis of the laser beam emitted from the exposure device 3. On the downstream side of the transport unit 42, a third transport unit 43, a fourth transport unit 44, and a fifth transport unit 45 are provided.

The above photographic processor is a paper magazine 2
The photographic paper P is pulled out from the printer and cut into a predetermined length by a cutter 46.
While the photographic paper P is being conveyed by 3, 44, and 45, the laser beam of the exposure device 3 is scanned in the middle of the photographic paper P, and an image is printed on the photographic paper P.

In the photographic processing apparatus having the above configuration, in the embodiment shown in the drawings, one of the plurality of pressure rollers 6 constituting the first transport unit 41 is provided with a balance of the pressure of the pressure roller 6 against the transport roller 5. Is provided, and the balance of the left and right pressing force of the pressing roller 6 with respect to the transport roller 5 in the axial direction can be adjusted arbitrarily.

That is, in the embodiment shown in FIGS.
As shown in FIG. 5, the pressure adjusting mechanism 8 is provided in the vicinity of both ends in the axial direction of the pressing roller 6, and as shown in FIG.
b, a block member 81 fixed to the guide frame portion 71b, a coil spring 82 and an adjusting screw member 83 incorporated in the block member 81, and a concave groove into which the driven shaft 61 can be loosely inserted. 84 and a screw hole 8 extending in a direction orthogonal to the groove 84.
In the state where the driven shaft 61 is inserted into the concave groove 84, the coil spring 82 is housed in the screw hole 85 and the adjusting screw member 83 is screwed into the adjusting screw member 8.
A coil spring 82 is interposed between the shaft 3 and the outer peripheral surface of the driven shaft 61.

By rotating the adjusting screw member 83 and screwing the adjusting screw member 83 into the screw hole 85, the spring force of the coil spring 82 is increased.
The pressing force of the pressing roller 6 against the conveying roller 5 is increased, and the adjusting screw member 83 is screwed away from the screw hole 85 so that the spring force of the coil spring 82 is reduced. To reduce the pressing force.

It should be noted that the block member 81 is
A screw shaft 73 erected on the guide frame portion 71b is inserted into the through hole 86 formed in 1 and a nut 74 is screwed into the insertion end portion, thereby being fixed to the guide frame portion 71b.

In the photographic processing apparatus equipped with the transport device having the above-described configuration, the photographic paper pulled out from the paper magazine 2 and cut to a predetermined length by the cutter 46 is transported to the first transport unit 41. Then, the leading edge of the photographic paper is nipped by the transport roller 5 and the pressure roller 6 on the most upstream side in the pressure contact state, and then transported by the transport roller 5 and the pressure roller 6 sequentially located downstream. , To the second transport unit 42.

When the photographic paper conveyed by the first conveyance unit 41 meanders on the conveyance path or is conveyed in an oblique direction, the adjusting screw member 83 of the press-contact force adjusting mechanism 8 is operated. By adjusting the spring force of the coil spring 82, the balance of the left and right pressing force of the pressing roller 60 in the axial direction is adjusted.

That is, as shown by an arrow W in FIG. 2, for example, when the printing paper is conveyed obliquely to the left, the pressing force of the pressing roller 6 on the left side in the axial direction with the conveying roller 5 is increased. Since it is weaker than that on the right side in the direction, the adjusting screw member 83 of the pressing force adjusting mechanism 8 located on the left side in the axial direction of the pressing roller 6 is screwed, and the pressing force adjusting mechanism 8 located on the left side in the axial direction of the pressing roller 6 is screwed. Coil spring 82
Is increased, the pressing force of the pressing roller 6 on the left side in the axial direction with the transport roller 5 is increased,
Can be properly adjusted, or the adjusting screw member 83 of the pressing force adjusting mechanism 8 located on the right side of the pressing roller 6 in the axial direction can be appropriately adjusted, and the shaft of the pressing roller 6 can be adjusted. If the spring force of the coil spring 82 of the pressing force adjusting mechanism 8 located on the right side in the direction is weakened, the pressing force of the pressing roller 6 on the right side in the axial direction with the transport roller 5 is reduced, and the pressing roller 6 is moved right and left in the axial direction. The pressing force balance can be properly adjusted.

Thus, as described above, the driven shaft 61
Even if the driven shaft 61 is bent by the resilient force of the elastic urging mechanism 63 disposed at the shaft end, the pressure adjusting mechanism 8 is disposed near both axial edges of the pressing roller 6. Therefore, when adjusting the pressing force of the pressing roller 6 by the pressure adjusting mechanism 8, the adjustment screw members 83 of the left and right pressing force adjusting mechanisms 8 are screwed or loosened without being affected by the bending of the driven shaft 61. With a simple operation that requires only an operation, fine adjustment of the pressing force of the pressing roller 6 with respect to the transport roller 5 can be performed easily and easily, and the straight running performance of the photographic paper can be improved.

In the above embodiment, the pressure adjusting mechanisms 8 are provided near both ends of the pressing roller 6 in the axial direction. However, the pressure adjusting mechanisms 8 may be provided only at one end in the axial direction.

In the above embodiment, the pressure adjusting mechanism 8
Is provided on the pressing roller 6 side, but may be provided on the conveying roller 5 side, or may be provided on both the pressing roller 6 side and the conveying roller 5 side.

In the above embodiment, the present invention is applied to the photographic paper transporting device. However, the present invention is not limited to this, and the present invention can be applied to a film transporting device. The present invention can also be applied to a paper transport device.

[0040]

As described above, according to the first aspect of the present invention, at least one of the transport roller and the pressure roller is used to adjust the balance of the pressure of the pressure roller against the transport roller. By providing the force adjusting means, it is possible to easily adjust the balance of the pressure contact force of the pressure contact roller with respect to the conveyance roller, and it is possible to prevent the sheet-like member conveyed by both rollers from meandering or being conveyed in an oblique direction. It can be easily modified to increase its transport performance.

According to the second aspect of the present invention, the pressing force adjusting means according to the first aspect is provided near both sides of the pressing roller to adjust the pressing force balance of the pressing roller with respect to the transport roller in the left and right directions in the axial direction. With this configuration, in addition to the effect of the invention described in claim 1, even if the shaft supporting the pressing roller is bent by the influence of the elastic urging means, the pressing members provided near both sides of the pressing roller are provided. By the force adjusting means, fine adjustment of the axially right and left pressing force balance of the pressing roller with respect to the transport roller can be easily performed.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a photographic processing apparatus equipped with a transport device of the present invention.

FIG. 2 is a schematic front view of the transfer device according to the present invention.

FIG. 3 is a sectional view taken along line XX in FIG. 2;

FIG. 4 is an enlarged side view of the transfer device according to the present invention.

FIG. 5 is an enlarged cross-sectional view illustrating a main part of the transfer device according to the present invention.

[Explanation of symbols]

 Reference Signs List 4 transport device 5 transport roller 6 pressure contact roller 63 elastic urging mechanism (elastic urging means) 8 pressure contact force adjusting mechanism (pressure adjusting means)

Claims (2)

[Claims] 1. A sheet-like member conveying apparatus comprising: a conveying roller; and a pressing roller which presses the conveying roller via an elastic urging means, and the sheet-like member is conveyed by both rollers. A sheet-like member conveying device, wherein at least one of the pressing rollers is provided with a pressing force adjusting means for adjusting a balance of a pressing force of the pressing roller against the conveying roller. 2. The sheet conveying apparatus according to claim 1, wherein the pressing force adjusting means is provided near both sides of the pressing roller so as to be able to adjust the balance of the pressing force of the pressing roller on the conveying roller in the left and right directions in the axial direction. apparatus.