Color developer compositions for carbonless paper copying systems
US5624882A · kind A · utility
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0References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1994 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | May 27, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/155
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a coating composition for the preparation of a CF sheet (i.e. a receiving sheet) of a carbonless paper copying system comprising a CF sheet and a CB sheet (i.e. a donating sheet). The coating composition comprises a color developer and an extender, wherein the extender comprises a particulate inorganic material which has been modified by treatment with a treating agent which has (i) a non-polar hydrophobic portion comprising at least one hydrocarbon group having a chain length of from 8 to 30 carbon atoms and (ii) a polar portion which is capable of binding with sites on the surface of the pigment particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.