Patent · US Expired

PC drum integrated revolving type developing unit with pull-out supporter

US5991569A · kind A · utility

40Cited by
21References
31Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 8, 1998
Grant dateNov 23, 1999
Priority date
Expiry dateJun 8, 2018

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G2221/163
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A color image forming apparatus having a revolving type developing unit detachably installed therein. The revolving type developing unit includes a plurality of different color developing devices each having a developing roller therein. Each of the developing rollers is movably mounted on the developing device so that a gap between each of the developing rollers and a periphery of a photoconductive drum which is to be formed when the revolving type developing unit is set in the color image forming apparatus is enabled to be adjusted.

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