Patent ID: 6300028
Filing Date: 2001-10-09
Classification: G03G

Abstract:
An environmentally stable photoreceptor member comprising an a-Si:H photoconductive layer, said photoreceptor member being first annealed for one to three days, then said photoconductive layer being treated with a prepolymer solution, and said photoreceptor member then being heated to a temperature between approximately 100.degree. C. to 140.degree. C. for 3 to 10 minutes to form on said photoconductive layer a working surface having a siloxane film, wherein said prepolymer solution results from reaction of water free of fluoride ions with an organosilane of the formula of R.sub.n Si X.sub.(4-n), where R is a nonhydrolyzable octadecyl group, and X is a hydrolyzable group selected from the group consisting of alkoxy groups having one to four carbons, phenoxy groups, acyloxy groups, and amine groups, and n=1, 2, or 3; said prepolymer solution being free from fluoride ions, whereby said photoconductive layer remains amorphous and has a uniform dark resistivity of 10.sup.13 ohm.multidot.cm or greater and whereby said photoconductive layer retains spatially uniform electric-field strengths E.gtoreq.10 volts/micron across the thickness thereof for at least two minutes after electrically charging the working surface under ambient relative humidity greater than 40%.