Method and apparatus for developing photosensitive lithographic plate
AssigneeFuji Photo Film Co., Ltd.
InventorsTomoaki Takekoshi, Sho Nakao, Hisao Ohba, Seiji Shigetaka
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Abstract
A method and an apparatus for developing a photosensitive lithographic plate at least one layer of which has been exposed with an image by a developer with conveying the same with the one layer facing substantially downwards, the method and apparatus being arranged in such a manner that the developer is supplied to the one layer and the thus-supplied developer is retained on the same layer. Therefore, the photosensitive lithographic plate can be developed without any necessity of being dipped in the developer.
Claims17
A method of developing photosensitive lithographic plate by applying developer to a photosensitive lithographic plate with at least one layer which has been exposed with an image, comprising the steps of:
- (a) conveying the photosensitive lithographic plate with one layer facing substantially downward;
- (b) applying a predetermined amount of substantially unused developer to at least said one layer of the photosensitive lithographic plate which is being conveyed;
- and
- (c) retaining the developer on said one layer by bringing a point-contact roller into point contact with said one layer.
A method of developing photosensitive lithographic plate by applying developer to a photosensitive lithographic plate with at least one layer which has been exposed with an image, comprising the steps of:
- (a) conveying the photosensitive lithographic plate with one layer facing substantially downward;
- (b) applying a predetermined amount of substantially unused developer to at least said one layer of the photosensitive lithographic plate which is being conveyed;
- and
- (c) retaining the developer on said one layer by positioning a substantially flat retaining plate adjacent said one layer such that said developer is retained on said one layer by being retained on a flat surface of said retaining plate.
A method of developing photosensitive lithographic plate by applying developer to a photosensitive lithographic plate with at least one layer which has ben exposed with an image, comprising the steps of:
- (a) conveying the photosensitive lithographic plate with one layer facing substantially downward;
- (b) applying a predetermined amount of substantially unused developer to at least said one layer of the photosensitive lithographic plate which is being conveyed;
- and
- (c) retaining the developer on said one layer, wherein said step (c) is arranged in such a manner that said developer is retained and spread on said one layer.
An apparatus for developing photosensitive lithographic plate capable of developing, by a developer, a photosensitive lithographic plate with at least one layer which has been exposed with an image while the photosensitive lithographic plate is being conveyed with said one layer facing substantially downwards, comprising:
- supply means for supplying a predetermined amount of substantially unused developer to said one layer;
- and
- retaining means for retaining the developer on said one layer, wherein said retaining means is provided with a flat portion retaining the developer on the upper surface thereof.
An apparatus for developing photosensitive lithographic plate capable of developing, by a developer, a photosensitive lithographic plate with at least one layer which has been exposed with an image while the photosensitive lithographic plate is being conveyed with said one layer facing substantially downwards, comprising:
- supply means for supplying a predetermined amount of substantially unused developer to said one layer;
- and
- retaining means for retaining the developer on said one layer, wherein said retaining means comprises a linear-contact roller capable of being brought into linear contact with said one layer.
Dependencies are inferred from the claim text.