Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1986-12-15
1988-10-04
Welsh, J. David
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 57, G03G 514
Patent
active
047756063
ABSTRACT:
There is provided an improved light receiving member comprising a substrate for electrophotography and a light receiving layer being formed of a first layer composed of an amorphous material containing silicon atoms as the main component and an element for controlling the conductivity, a second layer having a photoconductivity composed of an amorphous material containing silicon atoms as the main component and a third layer composed of an amorphous material containing silicon atoms as the main component and carbon atoms, said third layer being a two-layer structure having a lower layer region of 0.05 to 0.2 .mu.m in thickness with a defect density of less than 8.times.10.sup.18 cm.sup.-3 (ESR signal) and an upper layer region with a defect density of more than 8.times.10.sup.18 cm.sup.-3 (ESR signal) and a volume resistivity of more than 5.times.10.sup.12 .OMEGA..cm.
REFERENCES:
patent: 4613556 (1986-09-01), Mort et al.
patent: 4661427 (1987-04-01), Kanai
patent: 4663258 (1987-05-01), Pai et al.
Canon Kabushiki Kaisha
Welsh J. David
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