Pressure developing device provided in an image recording appara

Details Pressure developing device provided in an image recording appara Pressure developing device provided in an image recording appara

1990-10-03

1991-10-15

Brown, Brian W.

Optics: motion pictures

With sound accompaniment

Common picture and sound record carrier systems

354304, 100160, 100168, 100176, G03B 2732

Patent

active

050578600

ABSTRACT:
A pressure developing device in an image recording apparatus for recording an image on the recording medium, includes a pair of pressure developing rollers to be separated from and contacted with each other, and a pressurizing unit disposed on either one of the pressure developing rollers for pressurizing one of the pressure developing rollers toward or away from the other of the pressure developing roller. A pressure control unit controls the pressurizing unit in such a fashion that one of the pressure developing rollers is placed in contact with and pressurized against the other of the pressure developing rollers under a plurality of pressure conditions by the pressurizing unit so that the pressure strength between a pair of pressure developing rollers is gradually decreased from the center to the ends along the axial direction of the developing rollers. The pressure control unit also controls the pressurizing unit in such a fashion that the one of pressure developing rollers can be separated from the other of the pressure developing rollers.

REFERENCES:
patent: 4399209 (1983-08-01), Sanders et al.
patent: 4714943 (1987-12-01), Sakakibara et al.
patent: 4920375 (1990-04-01), Akao et al.
patent: 4945374 (1990-07-01), Yamamoto et al.

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