Patent · US Expired

Image forming apparatus

US7221893B2 · kind B2 · utility

2Cited by
3References
9Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 10, 2005
Grant dateMay 22, 2007
Priority date
Expiry dateFeb 10, 2025

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G2215/0158
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

In an image forming apparatus such as a color laser printer wherein a toner image is transferred onto a continuous paper, one or more of a exposure timing of each exposure device, a rotation speed of each image carrier device, a transfer bias voltage applied to each transfer device, and a wrap amount of each wrap device are controlled based on a coverage of a toner image formed on each image carrier device, thereby preventing a color-to-color registration state which tends to be caused due to a variation in the transport speed of the continuous paper in a transfer process.

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