Submodular unit for use in a modular rotary developing apparatus
US5612769A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1994 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Oct 25, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0685
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
For image reproduction, a submodular unit including a developing roller and a doctor blade is adjustably mounted on a modular developing unit of a rotary developing apparatus. In general, the modular developing unit is rotatably positioned to juxtapose a photoreceptor drum. This juxtaposed position defines the developing position. The toner loaded on the developing roller in the developing position travels over a spacial gap between the developing roller surface and the photoreceptor drum surface. This crucial gap is necessary for successful image reproduction. However, this gap usually cannot be optimally maintained over extended time. The gap is also changed due vibration caused during shipment. In adjusting the gap, the submodular unit allows an independent and fine adjustment for each modular image developing unit. The submodular unit also allows an efficient assembly of the modular rotary developing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.