Photocopying – Projection printing and copying cameras – With developing
Patent
1989-09-25
1990-10-09
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
With developing
354304, G03B 2732, G03B 2752
Patent
active
049624024
ABSTRACT:
A pressure device for use in image forming apparatuses comprises a pair of pressure rollers by which a media sheet with microcapsules encapsulating a colorless dye and a light-curable agent which hardens by exposure to light is pressed together with an image receiving sheet with a developing agent having a chromogenic effect on the colorless dye after the media sheet is exposed to an image-forming light, a pair of guides by which the pair of rollers are rotatably supported, the pair of guides being rotatable at one end relative to each other about a fulcrum, a roller-pressing means that is installed through the guides, said roller-pressing means pressing the pair of rollers to be pressed against each other, and a pressure changing means that is installed on both the guides, the pressure-changing means changing pressure to be applied to the rollers by the roller-pressing means according to the length of the image receiving sheet that is measured in the direction perpendicular to the transporting direction of the image receiving sheet.
REFERENCES:
patent: 4714943 (1987-12-01), Sakakibara et al.
Sharp Kabushiki Kaisha
Wintercorn Richard A.
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