Image recorder with a back-up roller pressing the nip roller int

Details Image recorder with a back-up roller pressing the nip roller int Image recorder with a back-up roller pressing the nip roller int

1987-12-08

1989-05-02

Goldberg, E. A.

Recorders

Combined with other non-recording devices

346108, 346136, 101152, 101153, G01D 900, G01D 942, B41F 900

Patent

active

048272841

ABSTRACT:
In an image recording apparatus in which an image optically formed on a photosensitive material is transferred as a visible image onto an image receiving material by pressurization, a back-up roller is employed to press a free nip roller against a fixed nip roller so that the pressure at the nip region of the two nip rollers is made uniform over the entire length thereof. The back-up roller has a width smaller than the width of the free nip roller against which it presses, and the back-up roller presses only against a central portion of the free nip roller.

REFERENCES:
patent: 3477369 (1969-11-01), Adamson
patent: 3610144 (1971-10-01), Woessner
patent: 3736869 (1973-06-01), Motter

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