Development apparatus for latent images on supported sheets
US4801970A · kind A · utility
0Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1986 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Nov 10, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toning shoe for applying fluid developer to a latent image on a supported sheet. A drum is the preferred support, with the toning shoe having raised upstream and downstream support rims contacting the sheet, opposed lateral insulating rims spaced very slightly from the sheet and a recessed electrode further spaced from the sheet. Fluid developer is injected through a slit into the shoe, flows as a thin film between the electrode and the sheet and then passes through a drain for collecting and recycling. The shoe moves laterally as the drum rotates so that development occurs in a helical stripe pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.