COMPOSITE TYPE ELECTROPHOTOGRAPHIC SENSITIVE BODY

Title:

COMPOSITE TYPE ELECTROPHOTOGRAPHIC SENSITIVE BODY

Document Type and Number:

Japanese Patent JPS6087334

Kind Code:

A

Abstract:

PURPOSE: To obtain good sensitivity over a wide wavelength range including the emission wavelength region of a simiconductor laser by using τ-type and/or η- type metal-free phthalocyanine as an electrostatic charge generating material and a specified compd. as a charge transfer material.

CONSTITUTION: A layer contg. a charge generating material and a layer contg. a charge transfer material are formed on a conductive substrate to obtain a composite type electrophotographic sensitive body. As the charge generating material, metal-free phthalocyanine of a type selected from τ-type, τ'-type, η- type, and η'-type is used, and as the charge transfer material, compds. represented by the formula, are used, in which R1WR6 are each H, alkyl, -NH2, dialkylamino, alkoxy, or halogen. Such a composite type photosensitive body is obtained, e.g., by forming a layer contg. the charge generating material on a conductive substrate and on this layer a layer contg. the charge transfer material or it may have a reverse constitution, or both materials may be contained in one layer. The use of a combination of such a charge generating and charge transfer materials enhances sensitivity even in a long wavelength region, and the obtained photosensitive body is especially suitable for a semiconductor laser printer using a semiconductor laser as a light source.

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