Image forming apparatus
US5995802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Jul 1, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04794
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus which forms toner images of different colors by at least one image forming device with a rotatably driven image bearing member, and forms a picture by transferring the different colored toner images formed by the image forming device onto an image transfer medium supported on a rotatably driven endless bearing member, or directly onto the endless bearing member, PA1 the image forming apparatus wherein a latent image writing position on the image bearing member being angularly spaced by approximately 180.degree. from an image transfer position including: PA2 a pattern detecting mechanism for detecting a color misregistration detecting pattern formed on the endless bearing member; and PA1 a drive control mechanism for individually controlling rotation speeds of rotary members, such as the image bearing member and the endless bearing member, so as to suppress a periodical rotation variation by using detecting information of a vibration component on the periodical rotation variation, which is obtained from detecting signals derived from the pattern detecting mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.