Developing method using developing electric field having back-transfer, transfer and rest steps
US5659840A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Jun 28, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0614
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing method includes the steps of opposing a developer carrying member to an image bearing member, the developing carrying member carrying a developer to the image bearing member for bearing an electrostatic image, supplying, to the developer carrying member, insulative one component developer having a weight average particle size of 4-8 microns, forming, between the image bearing member and the developer carrying member, an alternating electric field having a back-transfer period, transfer period and rest period, wherein a blank ratio of a sum of (i) the back-transfer period plus (ii) the transfer period and the rest period, during a developing operation, is 5:1-2:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.