Patent · US Expired

Electrophotographic method for producing multiple copies from the same electrostatic image

US3961951A · kind A · utility

9Cited by
5References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 26, 1974
Grant dateJun 8, 1976
Priority date—
Expiry dateDec 26, 1994

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G15/065
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An electrophotographic method is disclosed which produces multiple electrophotograhic copies from the same electrostatic image by multiply cycling the electrostatic image through development and transfer steps. To reduce copy density losses in subsequent copies, the biasing potential applied across the development zone is reduced on subsequent cycles of the electrostatic image through the development zone.

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