Electrophotographic photosensitive member with pyrazoline charge transport material
US4454211A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 1, 1982 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Jun 1, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0674
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic photosensitive member is characterized by comprising a layer which contains at least one pyrazoline compound represented by the following formula (I) or (II): ##STR1## wherein m and n represent 0 or 1; when both m and n are 0, X.sub.1 represents a substituted or unsubstituted heterocyclic residue; R.sub.1 represents a substituted or unsubstituted aryl or heterocyclic residue; R.sub.2 and R.sub.3 each represent hydrogen or a substituted or unsubstituted aryl or heterocyclic residue; or they form spiropyrazoline cojointly with the carbon atom to which they are linked; and R.sub.5 represents hydrogen, a halogen, or a substituted or unsubstituted alkyl or aryl; PA1 when m is 1 and n is 0, X.sub.1 represents a substituted or unsubstituted heterocyclic residue; R.sub.1 and R.sub.2 each represent a substituted or unsubstituted aryl or heterocyclic residue; R.sub.3 represents hydrogen; and R.sub.4 and R.sub.5 each represent hydrogen, a halogen, or a substituted or unsubstituted alkyl or aryl; PA1 when m is 0 and n is 1, X.sub.1, R.sub.1, R.sub.2, and R.sub.3 each represent a substituted or unsubstituted aryl or heterocyclic residue, R.sub.2 and R.sub.3 may also form …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.