Patent · US Expired

Image density control method for image recorder

US5237370A · kind A · utility

8Cited by
7References
7Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 12, 1991
Grant dateAug 17, 1993
Priority date
Expiry dateNov 12, 2011

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S706/90
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An image density control method applicable to an electrophotographic copier or similar image recorder for controlling the toner concentration of a two-component developer, i.e., a mixture of toner and carrier to maintain the density of a toner image produced by the developer constant. Predetermined calculations are performed on the basis of the output of a photosensor which is responsive to the toner images representative of reference patterns formed on a photoconductive element.

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