Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1981-03-05
1983-07-05
Rubinson, G. Z.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
G03G 1500
Patent
active
043915078
ABSTRACT:
Timing pulses (TP) are generated in response to incremental rotation of a photoconductive drum (40). The pulses (TP) are counted by a presettable counter (10) and decoded to produce control signals (STEP.sub.n) for scanning of an original document, sheet feed and other operations. When the count in the counter (10) reaches a certain value, the counter (10) is preset to a value depending on the paper size. A single control program is provided having a sequence of fixed program steps which are executed in response to respective counts in the counter (10). The smaller paper lengths are accommodated by programably presetting the counter (10) in such a manner as to skip unnecessary count sequences.
REFERENCES:
patent: 4109313 (1978-08-01), Donohue et al.
patent: 4139300 (1979-02-01), Katayama et al.
patent: 4215931 (1980-08-01), Tsuda et al.
Mori Goro
Ogura Masaaki
Alexander David G.
George Keith E.
Ricoh & Company, Ltd.
Rubinson G. Z.
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