Process for forming a liquid developer organisol
US3939085A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1973 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | May 14, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Our invention contemplates a liquid developer which carries a toner which is tacky. This tackiness, however, is a transient one. After the latent electrostatic image is developed by our tacky toner, that is one that has adhesive properties, the developed image with the toner in tacky state is contacted with sheet material such as paper. The developed tacky toner image has greater affinity for the paper than it does for the photoconductive surface. We insure this by using a photoconductive surface which has less affinity for the tacky toner than the sheet material to which the image is to be transferred. After the image is transferred to the sheet material the toner quickly loses its tackiness and dries to a hard scuff-resistant surface. Our invention also contemplates a developer liquid which contains a toner which is non-sticky when first deposited then becomes sticky or tacky so that it can be transferred while tacky and loses its tackiness and remains firmly bonded to the surface to which it is transferred. The developing liquid comprises a low-boiling organic liquid which has low solvent power for a sol comprising a high molecular-weight polymer and a finely divided pigment or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.