Pressure-fixing apparatus

Details Pressure-fixing apparatus Pressure-fixing apparatus

G - Physics

03

G

314/38.5

G03G 15/20 (2006.01) G03G 13/20 (2006.01)

Patent

CA 1159890

ABSTRACT An apparatus is disclosed that fixes powder images to a receptor by means of pressure. Pressure fixing images to a receptor, such as paper, by means of smooth steel rolls produces copies that have shiny image and background areas. The present invention overcomes this problem by providing a pressure fixing apparatus having a first or top roll to contact the surface of the receptor bearing the powder image, and a second or bottom roll to contact the opposite surface of the paper. The top roll has an irregular, non-compliant surface bearing numerous randomly sized, domed projections. The bottom roll has a compliant surface. The rolls have skewed longitudinal axes with respect to each other and contact each other when no receptor is passing between them.

373449

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