Image forming apparatus

Details Image forming apparatus Image forming apparatus

1988-12-15

1989-08-29

Braun, Fred L.

Photocopying

Contact printing

Light boxes

162271, 355284, 355295, G03G 1520, G03G 2100

Patent

active

048622150

ABSTRACT:
An image forming apparatus having an intermediate guide device which is disposed at an intermediate portion between a transfer section and a fixing section for the purpose of guiding a transfer medium while imparting breadthwise tension thereto. This intermediate guide device prevents any wrinkle occurring in the transfer medium near the fixing section from being moved toward the transfer section. In addition, the toner on the transfer medium is prevented from being transferred onto upper-surface rollers of the guide device when the electric charge of the toner leaks to the rollers.

REFERENCES:
patent: 2461376 (1949-02-01), Feldmeier
patent: 3879121 (1975-04-01), Simpson
patent: 3931793 (1976-01-01), Kolibas
patent: 3976370 (1976-08-01), Goel et al.
patent: 3981498 (1976-09-01), Fletcher
patent: 4008955 (1977-02-01), Bar-on
patent: 4179117 (1979-12-01), Rhodes
patent: 4188109 (1980-02-01), Idenawa et al.
patent: 4270443 (1981-06-01), McSwiney et al.
patent: 4377229 (1983-03-01), Miyashita
patent: 4419003 (1983-12-01), Fujie et al.
patent: 4572648 (1986-02-01), Toriumi et al.

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