Patent · US Expired

Developing apparatus including first and second agitating members in which the first agitating member includes non-screw portion

US6603943B2 · kind B2 · utility

6Cited by
11References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 31, 2001
Grant dateAug 5, 2003
Priority date—
Expiry dateOct 31, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G2215/0822
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

In a developing apparatus, the interior of a case is divided into a first space positioned on a developer supply side for the supply of a developer to an image bearing member and a second space which is supplied with a replenishing toner, first and second agitating members are included and are adapted to be rotated to agitate and convey the developer are disposed within the first and second spaces, respectively, and a screw member is provided having n threads (n≧2) is used as the first agitating member disposed in the first space, and a screw member having (n−x) threads (x≧0) is used as the second agitating member disposed in the second space.

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