Patent · US Active

Image forming apparatus

US11300896B2 · kind B2 · utility

0Cited by
1References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 19, 2021
Grant dateApr 12, 2022
Priority date—
Expiry dateFeb 19, 2041

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G15/0877
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An image forming apparatus includes a main assembly, a first cartridge including an image bearing member, a second cartridge including a developing member, a developer supplying member provided in the second cartridge, and a controller for changing a polarity of a developer supply amount control bias which is a difference between the developing bias and the developer supplying bias depending on a print ratio based on an inputted image data. The controller changes the polarity of the developer supply amount control bias depending on at least one of a use history of the first cartridge and a use history of the second cartridge and on the print ratio.

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