JP2001051395A - Sheet body transporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to surely transport any sheet body even when a plurality of sheet bodies are transported in parallel by arranging rollers in such a manner that one roller is inclined with respect to the other with the center in the longitudinal direction thereof as a fulcrum. SOLUTION: The axial core line L1 of the center roller 6 constituting the transporting rollers 5 is arranged in a direction orthogonal to the transporting direction X of photographic paper and the axial core line L2 of a side roller 7a, etc., is arranged in an intersected form so as to incline at a prescribed angle θ to the axial core line L1 of the center roller 6 with its longitudinal center as a intersection point, thereby, the roller surfaces of the side roller 7a, etc., and the center roller 6 deflected by the effect of the spring force of stop rings are brought into contact with each other. Also, the inclination direction of the side roller 7a, etc., adjacent to each other in the transporting direction of the photographic paper are varied, thereby, the meandering of the photographic paper to the inclination direction of the side roller 7a, etc., by their inclined arrangement is corrected with a pair of the next transporting rollers 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a sheet conveying device used for conveying a sheet such as photographic paper.

[0002]

2. Description of the Related Art Generally, in an automatic developing machine for developing photographic photosensitive materials such as photographic paper, photographic paper is immersed in various processing solutions such as a developing solution and a fixing solution filled in a plurality of processing solution tanks. After carrying out the development, bleaching, fixing and washing processes sequentially while transporting the photographic paper by the transport device loaded in the processing liquid tank, the photographic paper is fed into the drying housing, It is made to dry by the dry air sent to.

A transfer device to be loaded into the processing liquid tank is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-82569, and as shown schematically in FIG. , While freely supporting the shaft end of the drive shaft B1 of the center roller B constituting the transport roller,
Side rollers C constituting transport rollers are disposed on the front and rear sides of the rack with the center roller B interposed therebetween, and the shaft ends of the drive shafts C1 of the side rollers C are left and right via a bearing member D. It is rotatably supported on both side plates A.

[0004] A stop ring E composed of a coil spring is wrapped around a bearing member D that rotatably supports both side rollers C, and the spring surface of the stop ring E causes the roller surface of the side roller C to move toward the center roller. The roller is brought into pressure contact with the roller surface of the rack B, and the rollers CB are rotated to convey the printing paper from the front side to the rear side of the rack while sandwiching the printing paper between the side roller C and the center roller B.

[0005]

However, in the above conveying apparatus, since the retaining ring E is mounted on the bearing member D located at the shaft end of the side roller C,
As shown in FIG. 8, the side roller C is bent in a curved shape with respect to the axial direction thereof, and the side roller C and the center roller B are bent.
In some cases, the pressing force at the intermediate portion in the length direction may decrease.

For this reason, in the above conveying apparatus, as shown in FIG. 8, for example, when three sheets of photographic paper are conveyed in parallel, the photographic paper P1 conveyed at both sides in the longitudinal direction of the conveying roller is located at a position between the conveying roller and the intermediate position. There is a problem that the conveyance delay occurs in the photographic paper P2 conveyed at the site.

The present invention has been developed in view of the above circumstances, and an object is to surely convey any sheet even when a plurality of sheets are conveyed in parallel. It is an object of the present invention to provide a sheet conveying device capable of performing the above-described operations.

[0008]

According to a first aspect of the present invention, a sheet is conveyed by at least one pair of conveying rollers having roller surfaces pressed against each other. In the body transport device, at least one of the pair of transport rollers is disposed in an intersecting manner so as to be inclined with respect to the other roller with the longitudinal center thereof as an intersection, and a pair of rollers that bend by the pressing action is provided. The roller surfaces of the transport rollers are brought into contact with each other over the entire length.

According to a second aspect of the present invention, in the transporting device according to the first aspect, both of the pair of transporting rollers are arranged so as to intersect with the sheet transport direction.

[0010]

FIG. 1 schematically shows a photographic processing apparatus to which the present invention is applied. Basically, printing is performed by printing a photographic paper P which is an example of a sheet body. A processing machine S1, a development processing machine S2 for performing processing such as development on the photographic paper P on which printing has been completed, and a sorting device S3 for sorting the photographic paper printed by the printing processing machine S1 into three rows. It is composed of

The baking processing machine S1 is a paper magazine 1a.
An exposure device 1b for printing an image of a negative film on the photographic paper P pulled out from the printer 1 is provided, and a developing device S2 is a developing device 2a for developing the photographic paper P exposed by the exposure device 1b. A removing device 2b for removing the processing liquid adhering to the surface of the photographic paper P, a drying device 2c for drying the photographic paper P developed by the developing device 2a, and a dried photographic paper P And a print discharge device 2d that discharges the print paper.

The developing device 2a includes a plurality of processing solution tanks 21.
Are individually filled with various processing solutions such as a developing solution, a bleaching solution, a fixing solution, and a stabilizing solution, and a transport mechanism 3 for transporting the photographic paper P is provided in each of the processing solution tanks 21. It is installed.

In the above-described photographic processing apparatus, an image of a negative film is printed on a photographic paper P sequentially drawn out of the paper magazine 1a and cut into a print size by an exposure device 1b, and the photographic paper P is processed by a processing solution of a developing device 2a. After being immersed in various processing solutions such as a developing solution and a fixing solution filled in the tank 21 and sequentially performing development, bleaching, fixing, and stabilization while being transported by the transport mechanism 3, the removing device 2b After removing the processing liquid adhering to the surface of the photographic paper P, the photographic paper P is further fed into a drying device 2c, dried with dry air, and subsequently discharged from a print discharge device 2d.

According to the present invention, there is provided a photographic processing apparatus comprising:
The present invention relates to a transport device for transporting photographic paper P, and in the embodiment shown in the drawings, the present invention is applied to a transport mechanism 3 mounted in a processing liquid tank 21.

The transport mechanism 3 basically includes a processing solution tank 21
A vertically elongated rack 4 to be loaded into the rack, a transport roller 5 rotatably supported by the rack 4, and an upper portion of each of the processing liquid tanks 21.
And a rotation transport roller 30 for rotating the photographic paper P sent from the printer toward the next processing liquid tank 21. In the embodiment shown in FIGS. A plurality of center rollers 6 for rotatably supporting the rack 5 at an intermediate position between the front side and the back side of the rack 4, and a plurality of side rollers for rotatably supporting the center roller 6 on the front side of the rack 4 with the center roller 6 interposed therebetween. 7a and a plurality of side rollers 7b rotatably supported on the rear side of the rack 4. On the front side of the rack 4, the photographic paper P is passed between the opposed center roller 6 and the side roller 7a. The photographic paper P is transported downward by the two rollers 6 and 7a, and the photographic paper P is passed between the center roller 6 and the side roller 7b facing each other on the rear side of the rack 4.
The photographic paper P is transported upward by these two rollers 6, 7b.

The rack 4 is formed vertically from a synthetic resin material. A handle 41 is integrally formed at the upper end of the rack 4, and the rack 4 is formed at both ends in the width direction of the left and right inner side wall plates 42 and 43. Are formed with a plurality of cutouts 44 at predetermined intervals for assembling the bearing members 8 of the side rollers 7a and 7b.

As shown in FIG. 4, the notch 44 extends in the width direction of each of the inner side walls 42 and 43 while being slightly inclined in the vertical direction.
3 is opened at one end in the width direction, and the other end in the length direction is formed in a semicircular shape.

The bearing member 8 is formed of a synthetic resin material.
As shown in FIG. 3, a cylindrical shaft portion 81 having a circular cross section that can be inserted into the notch 44 and a pair of flanges 82 and 83 projecting radially from the cylindrical shaft portion 81 are provided. The supporting shafts 71a and 71b of the side rollers 7a and 7b
Are provided with shaft holes 84 that can be inserted.

As shown in FIG. 3, a pair of projecting pieces 85 extending parallel to each other at predetermined intervals are provided on the outer peripheral surface of the cylindrical shaft portion 81 of the bearing member 8 so as to protrude therefrom. 4
When the bearing member 8 is inserted into the bearing 4, the notch 4
4 so that it does not rotate.
The shaft ends of the support shafts 71a and 71b of the side rollers 7a and 7b are inserted into the shaft holes 84 of the bearing members 8 inserted into the shaft 4, and the two bearing members 8 that support the support shafts 71a and 71b. Crosses over a retaining ring 80 composed of a coil spring,
Due to the spring force of the retaining ring 80, both side rollers 7a
7b is urged toward the center roller 6 so that the roller surfaces 70a and 70b of both side rollers 7a and 7b are pressed against the roller surface 60 of the center roller 6.

On the other hand, the swiveling transport roller 30 is composed of an upper roller 31 and a lower roller 32. Although not shown, the upper roller 31 and the lower roller 32 have a shaft end portion of a support shaft of each roller. , And is rotatably supported on the support wall via these bearing members, and the roller surfaces of both rollers 31 and 32 are pressed against each other by the spring force of a retaining ring bridged between the bearing members. Like that.

In the transport device having the above-described configuration, in the embodiment shown in the drawings, the center roller 6, the side rollers 7a and 7b, the upper roller 31, and the lower roller 32
The outer diameter of each roller surface is the same over the entire length.

The center line L1 of the center roller 6 constituting the transfer roller 5 is arranged in a direction perpendicular to the transfer direction of the photographic paper P (the direction of arrow X in FIG. 6), and the center lines of the side rollers 7a and 7b. L2 are arranged in an intersecting manner so as to be inclined at a predetermined angle θ with respect to the axis L1 of the center roller 6 with the center in the length direction as an intersection, and the side rollers 7a. 7b
In this embodiment, the side rollers 7a and 7b are inclined twice with respect to the center roller 6 in the illustrated embodiment.

In the above embodiment, as schematically shown in FIG. 6, the inclination direction of the side rollers 7a and 7b adjacent to each other in the conveying direction of the photographic paper P is changed so that the side rollers 7a and 7b are inclined. The meandering of the photographic paper P in the inclined direction is corrected by the next pair of transport rollers 5.

In the conveying roller 5 described above, a drive gear 62 is provided on the support shaft 61 of the center roller 6 and a driven gear 72 meshing with the drive gear 61 is provided on the support shafts 71a and 71b of the side rollers 7a and 7b.
a and 72b are provided so that the side rollers 7a and 7b are interlocked with the center roller 6 rotated by driving a motor (not shown).

Thus, in the above-described transport apparatus, FIG.
As shown in FIG. 7, the roller surfaces 70a and 70b of the side rollers 7a and 7b which bend in a curved shape by the spring force of the retaining ring 80 are
The roller is securely pressed against the roller surface 60 of the center roller 6 over the entire length. Therefore, in the above-described transport device, even when, for example, three photographic papers P are transported in parallel, both sides in the longitudinal direction of the transport roller 5 Not only the photographic paper conveyed at the part, but also the photographic paper conveyed at the intermediate part in the length direction of the conveyance roller is surely conveyed at the same conveyance speed,
There is no delay in transport.

In the above embodiment, the axial direction of the center roller 6 is arranged in a direction orthogonal to the direction of transport of the photographic paper P, and the side rollers 7a and 7b are arranged such that the center of the center roller 6 in the longitudinal direction is an intersection. Are arranged in an intersecting manner so as to be inclined with respect to the side rollers, but the present invention is not limited to this. For example, as shown in FIG.
Both the center roller b and the center roller 6 may be arranged at a predetermined angle with respect to the conveyance direction of the photographic paper P (the direction of the arrow X in FIG. 7) so as to intersect with each other. When the printing paper P is transported, meandering of the printing paper P is suppressed.

In the above embodiment, the present invention is applied to the transport roller 5 incorporated in the rack 4, but the present invention is not limited to this. For example, the present invention may be applied to the above-described swiveling transport roller 30.

Further, in the above-described embodiment, the present invention is applied to the conveying device for the photographic paper P as a sheet, but is not limited thereto, and may be applied to, for example, a conveying device for a photographic film.

In the transport apparatus of the above embodiment, three photographic papers P are transported in parallel. However, the present invention is not limited to this. For example, four or five photographic papers P are transported in parallel.
May be transported in parallel.

In FIGS. 5 and 8, the deflection of the side rollers is emphasized more than the actual one so that the present invention can be easily understood.

[0031]

As described above, according to the first aspect of the present invention, there is provided a sheet conveying apparatus configured to convey a sheet by at least a pair of conveying rollers having roller surfaces pressed against each other. At least one of the transport rollers is disposed in an intersecting manner such that the center of the length direction is an intersection and is inclined with respect to the other roller, and the roller surfaces of a pair of transport rollers that are bent by the pressing action Are brought into contact over the entire length, so that the roller surfaces of the pair of transport rollers can be brought into pressure contact with each other over the entire area in the length direction. Therefore, when the plurality of sheet bodies are transported in parallel by the above transport device, Even if there is, it is possible to reliably transport any sheet body, and a certain sheet body may be delayed in transportation more than other sheet bodies. It is there no.

According to the second aspect of the present invention, in the transporting device according to the first aspect, both of the pair of transporting rollers are disposed so as to intersect with the transport direction of the sheet member.
When the sheet is conveyed by these conveying rollers, it is possible to suppress the sheet from meandering inadvertently.

[Brief description of the drawings]

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

FIG. 2 is a schematic perspective view of a rack.

FIG. 3 is an exploded perspective view of a main part of the rack.

FIG. 4 is an explanatory diagram of a main part of a rack.

FIG. 5 is an explanatory diagram of a main part of a rack.

FIG. 6 is an explanatory diagram showing an arrangement relationship between a side roller and a center roller.

FIG. 7 is an explanatory diagram showing an arrangement relationship between a side roller and a center roller in another embodiment.

FIG. 8 is an explanatory view of a main part of a conventional rack.

[Explanation of symbols]

 6 Center roller (conveyance roller) 7a, 7b Side roller (conveyance roller) 80 Stop ring (elastic urging means) P Printing paper (sheet body)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takuya Tsujita 579-1 Umehara, Wakayama Noritsu Koki Co., Ltd. F-term (reference) 2H098 AA01 AA03 CA02 CA16 CA36 3F049 AA01 CA31 DA11 DA12 LA11 LB03

Claims (2)

[Claims] In a sheet conveying apparatus configured to convey a sheet by at least a pair of conveying rollers configured to bring the roller surfaces into pressure contact with each other, at least one of the pair of conveying rollers may be replaced by one of the conveying rollers. The center of the length direction is an intersection, and it is arranged in an intersecting manner so as to be inclined with respect to the other roller, so that the roller surfaces of a pair of transport rollers that are bent by the pressing action are brought into contact over the entire length. Sheet conveying device. 2. The sheet conveying apparatus according to claim 1, wherein both of the pair of conveying rollers are disposed so as to intersect the conveying direction of the sheet.