Image forming apparatus which corrects for misregistration
US5778280A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04793
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus including a plurality of latent image forming units for forming latent images on a plurality of image carriers, a plurality of developing devices for forming developed images by developing the latent images formed by the latent image forming units, and an image conveyer belt for conveying the developed images formed by the developing devices. The image forming apparatus further contains a registration sensor for detecting the developed images conveyed on the image conveyer belt, and the registration sensor has a light source, a first optical fiber element for guiding the light from the light source and illuminating the image conveyer belt to obtain the reflected light, a second optical fiber element for guiding the reflected light in a specified direction, and a light receiving element for converting the reflected light guided by the second optical fiber element into an electric signal. The image forming apparatus has a computing device for a computing misregistration correcting amount to correct the misregistration of each of the developed images conveyed by the image conveyer belt based on the detecting result of the registration sensor and executes the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.