IMAGE SENSOR

• Main Authors: OKUNUKI MASAMI, KISHI JUNICHI, TANAKA HISAMI
• Format: Patent
• Language: English
• Published: 24.07.1989
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HETEROCYCLIC COMPOUNDS; LAKES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC CHEMISTRY; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; POLISHES; SEMICONDUCTOR DEVICES

PURPOSE:To enable the production of an image sensor that is as large as a text and therefore is directly readable by a method wherein the photoconductive film of a photosensitive element is built of a specified disazo compound and a specified hydrazone compound. CONSTITUTION:The photoconductive film of a photosensitive element is com posed of a disazo compound represented by a formula l and a hydrazone com pound represented by a formula II. Such a photoconductive film mainly com posed of an azo pigment and a hydrazone compound may be used as a photosen sitive element photoconductive material because it is higher in responding speed than a film that is mainly composed only of an azo pigment and because the mobility of carriers therein is higher. In the formulas illustrated, the A represents a formula III or IV; the X an aromatic compound or a hetero-ring, or its substitution product; the Ar1 an aromatic compound or a hetero-ring, or its substitution product; the Ar2 an aromatic compound or its substitution product; R1-R3 hydrogen, a lower alkyl group, and a phenyl group, or their substitution products; and R4 a lower alkyl group or a phenyl group or a carboxyl group, or its ester.