Development device
US6070040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1999 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Feb 18, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A development device according to the invention has an arrangement wherein a developer carrying member holding a toner thereon and an image bearing member with an electrostatic latent image formed thereon oppose each other across a predetermined gap therebetween, and a power unit applies an alternating voltage to the gap for supplying the toner from the developer carrying member to the image bearing member, the development device satisfying any one the following conditions: ##EQU1## where a (.OMEGA.) denotes a resistance component of an impedance (a+b.multidot.i) of the developer carrying member, -b (.OMEGA.) denotes a capacitative reactance component of the impedance thereof, and f (Hz) denotes a frequency of the alternating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.