| 摘要 |
<p>1,272,608. Photoelectrophoretic quinacridone pigments. XEROX CORP. 20 Aug., 1969 [22 Aug., 1968], No. 41587/69. Heading H1K. [Also in Division C4] Quinacridone pigments of the formula wherein each R is CH 3 , C 2 H 5 , OCH 3 , OC 2 H 5 or halogen and each R<SP>1</SP> is an aromatic, heterocyclic, aliphatic or cycloaliphatic group are used in a photoolectrophoretic image process.</p> |
