Pressure development roll for imaging sheets employing photosens

Details Pressure development roll for imaging sheets employing photosens Pressure development roll for imaging sheets employing photosens

1988-03-09

1989-09-05

Mathews, A. A.

Photocopying

Contact printing

Light boxes

355 27, 100162B, 29130, 29132, G03N 902, G03C 172

Patent

active

048643432

ABSTRACT:
A pressure roll is disclosed particularly for fixing and developing sheet material which is treated by passing through a high pressure nip defined by a pair of the rolls. The roll includes a support shaft and a cylindrical roll body secured to the shaft. To produce a uniform force along the pressure nip when a pair of the rolls are placed under load, the body is formed from a body material having a modulus of elasticity which varies as a function of position along the length of said body. The body is encased in a cylindrical shell.

REFERENCES:
patent: 3522643 (1970-08-01), Winkler
patent: 3750246 (1973-08-01), Pessen
patent: 4343234 (1982-08-01), Sasaki
patent: 4372247 (1983-02-01), Calabrese
patent: 4399209 (1983-08-01), Sanders et al.
patent: 4440846 (1984-04-01), Sanders et al.
patent: 4578340 (1986-03-01), Saccocio et al.
patent: 4727392 (1988-02-01), Stone et al.
patent: 4768050 (1988-08-01), Beery

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