Conveying roller for photosensitive material and method of producing the same
AssigneeFuji Photo Film Co., Ltd.
InventorsAkihiro Sanda, Takashi Kubo, Hideki Matsuzawa, Masayoshi Wada
Life of this patent
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Abstract
Continuous photo film includes a support of resin film having a back surface. A photosensitive layer of photographic emulsion is disposed on a surface of the support opposite to the back surface. A conveying roller conveys the continuous photo film. The conveying roller includes a roller body of metal. A hardness reinforcer layer is formed on a surface of the roller body by thermal spraying of ceramic or cermet, so that the roller body surface is prevented from being scratched or ground by the back surface of the film.
Claims29
A conveying roller for conveying photosensitive material, said photosensitive material including a support of resin film having a back surface, and a photosensitive layer of photographic emulsion disposed on a surface of said support opposite to said back surface, said conveying roller comprising:
- a roller body of metal;
- and
- a hardness reinforcer layer, formed on a surface of said roller body by thermal spraying of ceramic or cermet.
A method of producing a conveying roller for conveying photosensitive material, said photosensitive material including a support of resin film having a back surface, and a photosensitive layer of photographic emulsion disposed on a surface of said support opposite to said back surface, said producing method comprising steps of:
- cutting a rod material of metal into a roller body;
- and
- forming a hardness reinforcer layer of ceramic or cermet on a surface of said roller body by thermal spraying.
A conveying roller for conveying photosensitive material, said photosensitive material including a support of resin film having a back surface, and a photosensitive layer of photographic emulsion disposed on a surface of said support opposite to said back surface, said conveying roller comprising:
- a roller body of metal;
- and
- a diamond-like carbon coating, formed on a surface of said roller body by ion plating method.
A method of producing a conveying roller for conveying photosensitive material, said photosensitive material including a support of resin film having a back surface, and a photosensitive layer of photographic emulsion disposed on a surface of said support opposite to said back surface, said producing method comprising steps of:
- cutting a rod material of metal into a roller body;
- and
- forming a diamond-like carbon coating on a surface of said roller body by ion plating method.
A conveyor guide rail for guiding continuous photosensitive material being conveyed, comprising:
- a guide rail body of metal, extended in a longitudinal direction of said photosensitive material, including a conveying surface along which said photosensitive material is conveyed;
- a hardness reinforcer layer, formed on at least one part of said conveying surface, having higher hardness than hard chrome plating, for contacting said photosensitive material;
- wherein at least one part of said hardness reinforcer layer or said at least one part of said conveying surface is polished and smoothed.
A rail producing method of producing a conveyor guide rail, said conveyor guide rail including a lower guide plate and an upper guide plate of metal, extended in a longitudinal direction of travel of continuous photosensitive material, said upper and lower guide plates being secured to each other in a confronted manner, said lower guide plate including a lower conveying surface, said upper guide plate including an upper conveying surface, said photosensitive material being conveyed through a path defined between said lower and upper conveying surfaces, said rail producing method comprising the steps of:
- forming said lower and upper conveying surfaces on said lower and upper guide plates by cutting the metal plate material;
- forming a hardness reinforcer layer of ceramic or cermet on said lower and upper conveying surfaces by thermal spraying;
- polishing and smoothing said hardness reinforcer layer;
- and
- after polishing and smoothing said hardness reinforcer layer, confronting said lower conveying surface with said upper conveying surface thereby assembling said lower and upper guide plates.
A rail producing method of producing a conveyor guide rail, said conveyor guide rail including a lower guide plate and an upper guide plate of metal, extended in a longitudinal direction of travel of continuous photosensitive material, said upper and lower guide plates being secured to each other in a confronted manner, said lower guide plate including a lower conveying surface, said upper guide plate including an upper conveying surface, said photosensitive material being conveyed through a path defined between said lower and upper conveying surfaces, said rail producing method comprising the steps of:
- forming said lower and upper conveying surfaces on said lower and upper guide plates by cutting the metal plate material;
- polishing and smoothing said lower and upper conveying surfaces;
- after polishing and smoothing said lower and upper conveying surfaces, forming a hardness reinforcer layer of a diamond-like carbon coating on said lower and upper conveying surfaces by an ion plating method;
- after forming said hardness reinforcer layer, confronting said lower conveying surface with said upper conveying surface thereby assembling said lower and upper guide plates.
Dependencies are inferred from the claim text.