Electrophotographic process control device which uses fuzzy logic to control the image density
US5204718A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1992 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Apr 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S706/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electrophotographic process control device for controlling the supply of a toner in such a manner as to stabilize images against changes in the characteristics of a photoconductive element and in the concentration of the toner. An image density sensor measures the density of an image formed on a photoconductive drum. A scanner writes read image data representative of a document on the photoconductive drum. A determining section is responsive to the image density from the image density sensor and write image data from the scanner and representative of the area of an image for executing a predetermined fuzzy combination operation by using fuzzy rules registered beforehand and converts a membership function resulted from the operation to a non-fuzzy value to thereby determine a toner supply manipulation value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.