Photocopying – Contact printing – Light boxes
Patent
1993-08-10
1994-08-09
Moses, R. L.
Photocopying
Contact printing
Light boxes
271186, 271291, G03G 2100
Patent
active
053371348
ABSTRACT:
Disclosed are a single-side image forming device with a sheet inverting unit attached thereto for image forming on the reverse side of a sheet, and a double-side image forming apparatus that employs such a sheet inverting unit. The sheet inverting unit is detachable from an image forming apparatus, which has a sheet cassette; an image forming mechanism; a stacker; and a feeding path along which the sheet supplied from the sheet cassette is conveyed first to the image forming mechanism and then to the stacker. The sheet inverting unit comprises a switching lever for selectively guiding the image bearing sheet either toward the stacker or upward of the image forming device; switchback rollers for feeding the sheet guided upward by the switching lever and then inversely feeding the sheet; a guide path, which extends from the switchback rollers to a terminus in the vicinity of an inserting port of the image forming device; and feeding rollers provided along the guide path. The double-side image forming apparatus comprises: an image forming device, which has a sheet cassette, an image forming mechanism, a stacker, a feeding path along which the sheet is conveyed first to the image forming mechanism and then to the stacker, a manual inserting port, and a manual inserting path along which is conveyed an inserted sheet from the manual inserting port to the upstream origin of the feeding path for the image forming mechanism; and a sheet inverting unit that is structured as described above.
REFERENCES:
patent: 4568169 (1986-02-01), Wada et al.
patent: 4954848 (1990-09-01), Arima
patent: 5083170 (1992-01-01), Sawada et al.
patent: 5257068 (1993-10-01), Sawada et al.
Maekawa Takashi
Oishi Harumichi
Sato Kazuyasu
Yamazaki Mitsuru
Daiwa Seiko Inc.
Fujitsu Limited
Moses R. L.
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