Polymeric electrically active conductive layer (EAC) for electrically activatable recording element and process
US4410614A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1982 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Jun 14, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/153
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an electrically activatable recording element and process comprising a polymeric electrically active conductive layer improvements are provided wherein the polymeric electrically active conductive layer comprises a polymer that has recurring units represented by the structure: ##STR1## wherein R is hydrogen or alkyl containing 1 to 20 carbon atoms; PA1 R.sup.1 and R.sup.3 are individually hydrogen or methyl; PA1 R.sup.2 is alkyl containing 2 to 20 carbon atoms; PA1 x is 0 or 1; PA1 y is 0 to 4; PA1 R.sup.4 is C.sub.6 H.sub.5-z X.sub.z ; wherein z is 1 to 5; PA1 X is chlorine, bromine or iodine; PA1 n is 40 to 100 weight percent; PA1 and the polymer has a glass transition temperature within the range of 20.degree. C. to 40.degree. C. Such a polymeric electrically active conductive layer is useful in, for example, an electrically activatable recording element comprising an electrically conductive support having thereon, in sequence: PA0 (a) a polymeric electrically active conductive layer, as described, PA0 (b) an electrically activatable recording layer comprising: PA1 (A) a dye-forming coupler, and PA1 (B) an oxidation-reduction combination comprising: PA2 (i) an organic silver …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.