Patent · US Expired

Electrostatic copying apparatus

US4294535A · kind A · utility

9Cited by

4References

7Claims

0Family size

Assignee

RICOH COMPANY, LTD. · JP

Inventors

Kenzo Ariyama · Yokohama, JP
Syozo Miyawaki · Tokyo, JP
Takashi Murakami · Osaka, JP

Key dates

Filing date	Jan 21, 1980
Grant date	Oct 13, 1981
Priority date	—
Expiry date	Jan 21, 2000

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/30
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In an electrostatic copying machine (21) having an automatic document feed system (23), a document (28) is fed onto a platen (26) for scanning in a first direction (36) and a copy sheet (64) is fed into toner image transferring engagement with a photoconductive drum (27) in a second direction (84) which is perpendicular to the first direction (36). The document (28) is aligned with a center of a document feed path (34) regardless of the width of the document (28). The timing at which the copy sheet feed begins is controlled in accordance with the sensed width of the document (28) in such a manner that a leading edge of the copy sheet (64) aligns with a leading edge of a toner image on the drum (27).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.