Liquid toner fusing/transfer system with a film-forming roller that is absorbent of a low volatility liquid toner carrier
US5420675A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1994 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Mar 16, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/169
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic imaging system includes a photoconductor which carries an image defined by a liquid toner. The liquid toner comprises a pigment binder system in a paraffinic solvent blend carrier liquid, the liquid carrier exhibiting a relatively high flash point temperature. The imaging system further includes a heating roll, and a film forming roll positioned between the photoconductor and the heating roll. The film forming roll includes at least first and second superposed layers, the first layer comprised of a material that is carrier liquid phillic and which exhibits a dimensional thickness which enables substantially all carrier liquid entrained therein to reach the liquid's flashpoint temperature when under influence of the heating roll. The second layer is carrier liquid phobic and exhibits a resiliency that enables the first layer to compliantly mate with the photoconductor surface. A further transfer roll comprises an outer, liquid carrier phobic layer and an inner compliant layer for enabling indirect transfer of an image from the photoconductor to a media sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.