Patent · US Expired

Electrophotographic apparatus

US4679931A · kind A · utility

2Cited by
4References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 15, 1986
Grant dateJul 14, 1987
Priority date
Expiry dateSep 15, 2006

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G15/041
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An electrophotographic apparatus has illuminating means for illuminating an original, scanning means for scanning the original, imaging means for imaging the reflected light or the transmitted light from the original on a light-receiving member, the imaging means having at least one variable refractive power element, control means for varying the refractive power of the variable refractive power element, and driving means for moving the light-receiving member in synchronism with the scanning of the original.

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