JPH059727Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a processing apparatus for passing a photosensitive film submerged in a processing solution such as a developer.

(Prior Art) Conventionally, as this type of device, there is a device described in Japanese Utility Model Publication No. 60-20115. As shown in FIG. 5, this consists of a pair of feed rollers 1 and
By rotating the rollers 1 and 2 synchronously, the photosensitive film 3 is transferred and passed through a processing liquid 4 such as a developer that is in contact with both the rollers 1 and 2. Since the surfaces are smooth and in close contact with each other, when both feed rollers 1 and 2 are stopped, the processing liquid 4 is blocked at the boundary between the two feed rollers 1 and 2, and over time, solid matter 5 such as crystals is It will be generated and attached as such. For this reason, solid matter 5 attached to both feed rollers 1 and 2 when re-driving
is transferred to the photosensitive film 3, which causes a decrease in processing performance such as development.

(Problems to be Solved by the Invention) In view of the above-mentioned conventional problems, the present invention aims to prevent solid matter from forming and adhering between the two feed rollers, which would lead to a decrease in processing performance such as development. The purpose of this is to transport the photosensitive film without causing any damage.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a pair of feed rollers 11 and 12 that are in contact with processing liquids 14 to 16 such as developer and rotate synchronously in opposite directions. , in a photosensitive film processing apparatus in which the photosensitive film A is transferred between the two feed rollers 11 and 12 and submergedly passes through the processing liquids 14 to 16. It consists of a stepped roller in which large diameter portions 11a, 11b, 12a, 12b and small diameter portions 11c, 12c are alternately formed, and both feed rollers 11, 12
The large diameter portions 11a, 12a at both ends are brought into contact with each other, and the large diameter portions 11a, 12a at both ends of the
The large diameter portions 11b, 12b other than the large diameter portions 11a, 12a at both ends are made to conflict with each other, and the small diameter portion 11 opposite thereto
A gap α slightly larger than the thickness of the photosensitive film A is provided between the photosensitive film A and the photosensitive film A, and a non-contact state is maintained at all times.

(Embodiment) FIGS. 1 and 2 show a photosensitive film processing apparatus which is an embodiment of the present invention. A pair of upper and lower feed rollers 11 and 12, each having both ends rotatably supported by bearings 9 and 10, are arranged in pairs at a predetermined interval in the film transport direction. The pair of upper and lower feed rollers 11,1
2 has a large diameter portion 11 in the axial direction, as shown in FIG.
a, 11b, 12a, 12b and small diameter portion 11c, 1
The large diameter portions 11a and 12a at both ends of the upper and lower feed rollers 11 and 12 are brought into contact with each other in the oblong bearing holes 13 of the bearings 9 and 10. Along with letting
The large diameter portions 11b, 12b other than the large diameter portions 11a, 12a at both ends are made to conflict with each other, and the large diameter portions 11b, 12b other than the large diameter portions 11a, 12a at both ends are
As shown in FIG. 4, a gap α slightly larger than the thickness of the photosensitive film A is formed between 2b and the small diameter portions 11c and 12c facing it, so that the gap between them is always in a non-contact state even when the feed roller is stopped. is maintained. Therefore, the solid matter in the processing liquids (developing liquid, fixing liquid, washing liquid) 14, 15, 16 in each tank 6-8 is not blocked at the boundary between the upper and lower feed rollers 11, 12.

Furthermore, as shown in FIG.
8 and 19 are interlocked by meshing with each other, and by rotating the worm gear 19 that meshes with the gear 18 above the worm gear 19, the worm gears 8 and 19 can be rotated synchronously. Therefore, as shown in FIG. 2, when the photosensitive film A is sent out by the pair of upper and lower feed rollers 20, 20, the photosensitive film A is transferred to the upper and lower feed rollers 11 which rotate synchronously, as shown in FIG. , 12 and is pulled in while receiving some pressure resistance, and is allowed to submerge and pass through the liquids 14 to 16 in the respective tanks 6 to 8.

In FIG. 2, reference numeral 21 denotes a comb-shaped guide plate disposed in each tank 6 to 8, which guides the photosensitive film A by a concave curved surface 21a formed on its upper edge. . Reference numeral 22 designates an arcuate photosensitive film guide plate disposed above each tank 6 to 8, and 23 designates a pair of upper and lower photosensitive film drawing rollers.

(Effects of the invention) According to the invention, since the distance between the two feed rollers is maintained constant with a gap slightly larger than the thickness of the photosensitive film, the photosensitive film fed between the two feed rollers is The film can be reliably clamped with a large film clamping force, and since both feed rollers are driven to rotate synchronously, the photosensitive film fed between the two feed rollers can be fed out with a large film feeding force. As a result, even when the photosensitive film is in contact with a processing solution such as a developer and becomes slippery,
The photosensitive film A can be reliably fed out without the two feeding rollers spinning idly.

Further, both feed rollers are formed in the shape of stepped rollers, and their large diameter portions are only partially in contact with the photosensitive film. Therefore, even if solid substances such as crystals in the processing liquid adhere to the surfaces of both feed rollers, the attached solid substances will pass through the gap between both feed rollers and the photosensitive film, and the solid substances will cause the photosensitive film to be exposed. There is little risk of scratching the film.

Furthermore, since the large diameter portions other than the large diameter portions at both ends of both feed rollers and the small diameter portions opposite thereto are always maintained in a non-contact state, solid matter is prevented from forming and adhering between the two feed rollers. This solves the problem of solid matter adhering to the photosensitive film being transferred to or damaging the photosensitive film when the two feed rollers are driven again, and it is possible to maintain good processing performance such as development.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts of a photosensitive film processing apparatus which is an embodiment of the present invention, and FIG.
3 is a perspective view of the feed roller used in the same device, FIG. 4 is an enlarged vertical cross-sectional view of the main part of the same feed roller, and FIG. 5 is an enlarged cross-sectional view of the main part of the conventional device. be. 9...Bearing, 11, 12...Feed roller, 11
a, 12b, 12a, 12b...large diameter part, 11
c, 12c... small diameter part, 13... oval bearing hole,
14-16...Processing liquid, A...Photosensitive film, α
……gap.

Claims (1)

[Scope of utility model registration request] A photosensitive film is provided with a pair of feed rollers that are in contact with a processing liquid such as a developer and rotate synchronously in opposite directions, and the photosensitive film is conveyed between the two feed rollers and passes submergedly through the processing liquid. In the film processing apparatus, both feed rollers are stepped rollers in which large diameter portions and small diameter portions are alternately formed in the axial direction, and the large diameter portions at both ends of the feed rollers are brought into contact with each other. In this state, the rollers are inserted into the oval bearing hole of the bearing so as to be rotatable, and the distance between the two feed rollers is kept constant, and the large diameter portions of the two feed rollers other than the large diameter portions at both ends of the rollers are inserted in a manner that they are out of sync with each other. Let me,
A gap slightly larger than the thickness of the photosensitive film is maintained between a large diameter part other than the large diameter part at both ends and a small diameter part opposite thereto, and a non-contact state is maintained at all times. A photosensitive film processing apparatus is provided with a pair of gears that mesh with each other, and both feed rollers are driven to rotate synchronously via one of the gears.