Electrical biasing scheme for preventing overplating in an image-on-image electrostatographic printing system
US5848337A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y15/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A method and apparatus for eliminating undesirable development of background charge potentials in a multicolor electrostatographic system is disclosed, wherein the application of a developer bias at a given development station is selectively controlled to be substantially equal to or greater than the background image voltage of the image generated by a preceding imaging station such that the voltage differential between toner particles at the development station and the background areas including the previous image areas is substantially zero and the electrostatic forces acting on the toner particles are insufficient to attract the toner particles to the residual image. A method and apparatus is disclosed for eliminating redevelopment of previous images in a multicolor electrostatographic system, and, more particularly, an image-on-image multicolor system, wherein the imaging and development biases for each color in the printing process is systematically adjusted so as to eliminate charge potential differentials which can operate to attract toner particles to the receiving member in a subsequent image development procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.