Patent · US Expired

Image forming apparatus

US6975828B2 · kind B2 · utility

7Cited by
9References
7Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 9, 2004
Grant dateDec 13, 2005
Priority date
Expiry dateMay 1, 2024

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G2215/0161
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An image forming apparatus capable of preventing the increase of the size thereof by having a lengthened developer bearing member is provided with regard to an image forming apparatus capable of printing a registration mark (dragonfly) on a large sheet of recording paper for producing an art work in case of the use of a formed image as a printing manuscript. The length of the lengthwise direction of a developer bearing member provided in at least one developing device among the developing devices provided in the image forming apparatus is longer than those of the developer bearing members of the other developing devices.

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