Electronic color printing system with sonic toner release development
US4833503A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S310/80
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-color printer using a sonic toner release development system to provide either partial or full color copies with minimal degradation of developed toner patterns by subsequent over-development with additional colors and minimal back contamination of developer materials. Multiple scanning beams, each modulated in accordance with distinct color image signals, are scanned across the printer's photoreceptor at relatively widely separated points, there being buffer means provided to control timing of the different color image signals to assure registration of the color images with one another. Each color image is developed prior to scanning of the photoreceptor by the next succeeding beam. After developing of the last color image, the composite color image is transferred to a copy sheet. Development is accomplished by vibrating the surface of a toner carrying member and thereby reducing the net force of adhesion of toner to the surface of the toner carrying member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.