Automatic developing apparatus and process for forming image using the same
View Patent ↗A photographic light-sensitive material having a support having a thickness of from 160 to 225 μm is processed with an automatic developing apparatus, in which at least one of rollers of a developing part, a fixing part and a rinsing rack part of the automatic developing apparatus has a surface mainly containing a nonpolar polymer substance and having a center line surface roughness (Ra) of 20 μm or less. By using the automatic developing apparatus, dusts generated in the apparatus can be easily removed with a cleaning film.
1. An automatic developing apparatus for processing a photographic light-sensitive material having a support having a thickness of from 160 to 225 μm,
the automatic developing apparatus comprising a developing part, a fixing part and a rinsing rack part,
the developing part, the fixing part and the rinsing rack part each having a roller for conveying the light-sensitive material, and
at least one of the rollers of the developing part, the fixing part and the rinsing rack part having a surface mainly comprising a nonpolar polymer substance and having a center line surface roughness (Ra) of 20 μm or less.
2. The automatic developing apparatus as claimed in claim 1 , wherein at least one of the rollers of the rinsing rack part has a surface mainly comprising a nonpolar polymer substance and having a center line surface roughness (Ra) of 20 μm or less.
3. The automatic developing apparatus as claimed in claim 1 , wherein all the rollers of the developing part, the fixing part and the rinsing rack part have a surface mainly comprising a nonpolar polymer substance and having a center line surface roughness (Ra) of 20 μm or less.
4. The automatic developing apparatus as claimed in claim 1 , wherein the roller having a surface mainly comprising a nonpolar polymer substance and having a center line surface roughness (Ra) of 20 μm or less has no groove for conveying.
5. The automatic developing apparatus as claimed in claim 1 , wherein the nonpolar polymer substance is a fluorine resin, a polyethylene resin, a polypropylene resin, a vinylidene fluoride resin or a polycarbonate resin.
6. The automatic developing apparatus as claimed in claim 1 , wherein the nonpolar polymer substance is a tetrafluoroethylene resin.
7. A process for forming an image comprising a step of processing a photographic light-sensitive material having a support having a thickness of from 160 to 225 μm with an automatic developing apparatus comprising a developing part, a fixing part and a rinsing rack part each having a roller for conveying the light-sensitive material, and at least one of the rollers of the developing part, the fixing part and the rinsing rack part having a surface mainly comprising a nonpolar polymer substance and having a center line surface roughness (Ra) of 20 μm or less.
8. The process for forming an image as claimed in claim 7 , wherein the photographic light-sensitive material has an emulsion surface containing a matte material having an average particle diameter of 10 μm or less.
9. The process for forming an image as claimed in claim 7 , wherein the photographic light-sensitive material has no gelatin layer on a surface opposite to an emulsion surface.
10. The process for forming an image as claimed in claim 7 , wherein the photographic light-sensitive material has a gradation sequence of 10 or more.