Smear resistant magnetic image character recognition processes
US4859550A · kind A · utility
43Cited by
16References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Sep 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09733
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic process which comprises the generation of latent image; developing the image with a toner composition comprised of resin particles, magnetite particles, and an additive component comprised of an aliphatic hydrocarbon or a polymeric alcohol of the formula EQU CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; and subsequently providing the developed image with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is minimized in said device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.