Process for producing photoconductive member and apparatus for producing the same

Claim 1

An apparatus for producing continuously a photoconductive member for electrophotography by introducing starting gases while heating a support for electrophotography to form a film having photoconductivity thereon, said apparatus being subject to accumulation of dust from interior surfaces of said apparatus during use which adversely affects the electrical and optical characteristics of said photoconductive member comprising in sequence: (a) a preparation chamber for preparing a support for electrophotography which is brought to reduced pressure at least after introducing the support and having an inner volume sufficient to hold said support and to minimize the volume of air contained in order to promptly attain said reduced pressure; (b) a heating chamber having sufficient inner volume to hold a plurality of supports which is brought to reduced pressure and for heating the support to a desired temperature; (c) a reaction chamber for forming a thin film having photoconductivity on the support which is brought to reduced pressure; (d) a cooling chamber having an inner volume sufficient to facilitate cooling to a predetermined temperature during transportation of said support therethrough for cooling the photoconductive member formed which is brought to reduced pressure; (e) a removing chamber having an inner volume sufficient to hold said support and to minimize the volume of air contained therein in order to promptly attain said reduced pressure; and (f) a pressure reducing means for bringing each of the chambers (a) to (e) to the reduced pressure; wherein each of said preparation chamber, heating chamber, reaction chamber, cooling chamber and removing chamber is adapted to be brought to said reduced pressure, independently of the other said chambers, whereby said dust is reduced so as to improve the electrical and optical characteristics of said photoconductive member.

Claim 2

An apparatus for producing continuously a photoconductive member for electrophotography by introducing starting gases while heating a support for electrophotography to form a film having photoconductivity thereon, said apparatus being subject to accumulation of dust from interior surfaces of said apparatus during use which adversely affects the electrical and optical characteristics of said photoconductive member comprising in sequence: (a) a preparation chamber for preparing a support for electrophotography which is brought to reduced pressure at least after introducing the support and having an inner volume sufficient to hold said support and to minimize the volume of air contained in order to promptly attain said reduced pressure; (b) a heating chamber having sufficient inner volume to hold a plurality of supports which is brought to reduced pressure and for heating the support to a desired temperature; (c) a reaction chamber for forming a thin film having photoconductivity on the support which is brought to reduced pressure; (d) a cooling chamber having an inner volume sufficient to facilitate cooling to a predetermined temperature during transportation of said support therethrough for cooling the photoconductive member formed which is brought to reduced pressure; (e) a removing chamber having an inner volume sufficient to hold said support and to minimize the volume of air contained therein in order to promptly attain said reduced pressure; and (f) a pressure reducing means for bringing each of the chambers (a) to (e) to the reduced pressure; wherein each of said preparation chamber, heating chamber, reaction chamber, cooling chamber and removing chamber is adapted to be brought to said reduced pressure, independently of the other said chambers, whereby said dust is reduced so as to improve the electrical and optical characteristics of said photoconductive member.