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HALOGEN DOPING OF SELENIUM TELLURIUM PHOTORECEPTOR

IP.com Disclosure Number: IPCOM000025673D
Original Publication Date: 1987-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 81K

Publishing Venue

Xerox Disclosure Journal

Abstract

Halogen doping has been found to reduce voltage cycle up as well as residual voltage, particularly when cycling is effected at elevated temperatures. Undoped selemium-tellurium alloys compared with chlorine doped selenium-tellurium alloys are illustrated in Table I below. The data was obtained by scanning electrophotographic drums at 20°C and 35°C. The selenium-tellurium alloy used for all of the samples had a tellurium content of about 9.3 percent by weight and a thickness of about 50 microns in a single layer.

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XEROX DISCLOSURE JOURNAL

HALOGEN DOPING OF SELENIUM TELLURIUM PHOTORECEPTOR U.S. C1.430/86 Lewis B. Leder
Harvey J. Hewitt

Proposed Classification

Int. C1. G03g 15/08

Halogen doping has been found to reduce voltage cycle up as well as residual voltage, particularly when cycling is effected at elevated temperatures. Undoped selemium-tellurium alloys compared with chlorine doped selenium- tellurium alloys are illustrated in Table I below. The data was obtained by scanning electrophotographic drums at 20°C and 35°C. The selenium- tellurium alloy used for all of the samples had a tellurium content of about 9.3 percent by weight and a thickness of about 50 microns in a single layer.

ClPPM AVO

0 35

200 73

20 28

20 20

ADDP

33

62

25

12

TABLE I

AVBG AVR VR Temp.(oC)

45 45 41 20

137 173 -- 35

38 7 9 20

-5 9 _- 35

Results similar to those shown in Table I were obtained using iodine in greater relative quantities.

More specifically, scanner measurements for drums of selenium- tellurium alloys containing about 25 parts per million iodine and about 320 parts per million iodine were taken at 20°C. The tellurium content of the selenium- tellurium alloy was about 10 percent by weight and the single layer alloy thickness was 60 microns

Volume 12 Number 1 January/February 1987 59

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HALOGEN DOPING OF SELENIUM TELLURIUM PHOTORECEPTOR (Cont'd)

TABLE 11

I PPM AVO ADDP AVBG AVR VR

25 66 45 106 80 88

320 2 -21 -21 39 49

Th...