JPH0143704Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic developing device using a roller conveyance system.

[Prior art]

Conventionally, in the above-mentioned automatic developing apparatus, especially when processing a photosensitive material intermittently, the processing liquid adhering to the transport roller outside the liquid tank during non-transportation becomes unevenly distributed, and the photosensitive material that passes through the transport roller next becomes uneven. Since this causes uneven development, it is common practice to carve lead marks on the conveying roller so that the processing liquid is evenly distributed and adhered even when the roller is not being conveyed. However, this automatic developing device has a disadvantage in that the lead marks are engraved on the conveying roller itself, which causes the lead marks to be transferred onto the photosensitive material.

[Purpose of invention]

The present invention was devised in view of the above-mentioned drawbacks, and its purpose is an automatic developing device that does not cause uneven development during the conveyance process, regardless of continuous processing or intermittent processing, and also does not cause transfer of lead marks. Our goal is to provide the following.

[Structure of the idea]

In an automatic developing device that has a processing tank filled with a processing liquid for developing a photosensitive material and also has a conveyance roller that transports the photosensitive material inside and outside the processing tank, the device directly contacts the processing liquid in the processing tank. The present invention is characterized in that a transfer roller is provided in contact with the transition roller of the conveyance rollers, and a lead eye is provided on the transfer roller.

〔Example〕

The present invention will be described in detail below based on an embodiment shown in the drawings.

FIG. 1 is a cross-sectional front view showing a part of an automatic developing device 1 according to the present invention, in which a photosensitive material 3 such as a film inserted from a supply table 2 is taken out from an outlet (not shown) near the supply table 2. Developer tank 4, fixer tank 5 up to the vicinity
A conveying roller 6, which is disposed continuously inside and outside a processing liquid tank such as the like, and which rotates at a constant speed, sequentially conveys and processes the image to a developing process and a fixing process. In this embodiment, a conveyance roller 6 serving as a crossing roller is installed outside the liquid tanks 4 and 5 and between both 4 and 5.
The pair of rollers 6a and 6b arranged above and below are 2
The rollers 6b, 6b are arranged parallel to each other with a gap in the direction in which the set moves, and a transfer roller 7 is arranged between the rollers 6b, 6b, which are arranged below, and comes into contact with each of the rollers 6b, 6b. There is. and the transfer roller 7
As shown in FIG. 2, lead holes 8 are carved on the circumferential surface over almost the entire area. Therefore, photosensitive material 3
When the developer passes through the developer tank 4 and passes between the transport roller 6, which serves as a crossover roller, between rollers 6a and 6b, a part of the developer that has adhered to the photosensitive material 3 passes through the rollers 6a and 6b. It is transferred to the transfer roller 7 via the transfer roller 7, and is stored in the lead eye 8 of the transfer roller 7. Then, the transfer roller 7 and the conveyance roller 6
Since the rollers 6b and 6b rotate in the direction of the arrow while in contact with each other, the rollers 6a, 6b
Even after the photosensitive material 3 has passed, the developer stored in the lead holes 8 of the transfer roller 7 is uniformly attached to the circumferential surface of the transfer roller 7, so that the state in which the photosensitive material is continuously passed is maintained. . Also, rollers 6a, 6
It has uniformity up to the dry state of b.

In the above embodiment, the conveyance roller from the developer tank was explained, but it is of course possible to use the conveyance roller from the fixer tank, etc.
Furthermore, the arrangement position of the transfer roller is not limited to the above-mentioned arrangement position, but can be implemented as long as it does not interfere with the operation of the photosensitive material transport system and is in contact with the transport roller.

[Effect of idea]

In the present invention, lead marks are engraved on the transfer roller that contacts the transport roller outside the liquid tank, so even if the photosensitive material is processed intermittently, processing unevenness such as uneven development during the transport process will not occur, and the lead Since the transfer roller has a structure in which the eyes are engraved on the transfer roller, the photosensitive material is conveyed by a conveyance roller that does not have lead eyes, and therefore, there are various effects such as no lead eyes being transferred to the photosensitive material.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention,
Figure 1 is a cross-sectional front view showing a part of the automatic developing device;
FIG. 2 is a perspective view showing a conveyance roller and a transfer roller outside the liquid tank. 1 is an automatic developing device, 2 is a supply stand, 3 is a photosensitive material, 4 is a developer tank, 5 is a fixer tank, 6 is a conveyance roller, 6a, 6b are rollers, 7 is a transfer roller, 8 is a lead stitch .

Claims (1)

[Scope of utility model registration request] In an automatic developing device that has a processing tank filled with a processing solution for developing a photosensitive material and also has a conveyance roller that transports the photosensitive material inside and outside the processing tank, the device comes into direct contact with the processing solution in the processing tank. An automatic developing device characterized in that a transfer roller is provided in contact with a transition roller of the conveyance rollers, and a lead eye is provided on the transfer roller.