High speed magnetographic imaging process
US4282296A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1980 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Apr 30, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08755
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention generally is directed to methods for developing images, including latent magnetic and electrostatic images, which involves forming latent images on a suitable substrate and contacting the image with a toner comprising a polymeric esterification product of 1,4-benzene-dicarboxylic acid polymerized with 1,2,4-benzenetricarboxylic acid - cyclic 1,2-anhydride and 2,2-dimethyl-1,3-propane diol in a magnetic material. The toner composition described is particularly useful in a magnetic imaging system. The magnetic material can act as both the colorant and magnetic substance, or an additional colorant such as carbon black can be utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.