US3925571A - Method of making a selenium charge carrier plate - Google Patents

Method of making a selenium charge carrier plate Download PDF

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Publication number
US3925571A
US3925571A US438831A US43883174A US3925571A US 3925571 A US3925571 A US 3925571A US 438831 A US438831 A US 438831A US 43883174 A US43883174 A US 43883174A US 3925571 A US3925571 A US 3925571A
Authority
US
United States
Prior art keywords
selenium
charge carrier
layer
preparing
improved method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US438831A
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English (en)
Inventor
Karl Esser
John E Segain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent NV
Original Assignee
International Standard Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19732306157 external-priority patent/DE2306157C3/de
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US3925571A publication Critical patent/US3925571A/en
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/08—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic
    • G03G5/082—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic and not being incorporated in a bonding material, e.g. vacuum deposited
    • G03G5/08207—Selenium-based

Definitions

  • the present invention relates to a process of preparing a selenium charge carrier plate or foil wherein a non-conductive layer of selenium is evaporated onto a metal foil.
  • an image can be produced in that an image plate or drum coated with a photoconductive selenium layer, is charged to an electric potential and, by exposure, there is formed a charge distribution corresponding to the image pattern.
  • the image is made visible by means of a non-conductive electroscopic powder. This powder image is then transferred to a paper tape, and fixed thereon.
  • the selenium layer is deposited by evaporating the selenium under vacuum, and by condensing the vapor on the cold metal surface of the image plate or drum or foil respectively.
  • the temperature of this cold surface is usually kept below 50 C. In order to subject as much of the surface a possible to evaporation during the time unit, evaporation speed has up to now always been kept at a high deposition rate.
  • the inventive process is particularly suitable for charge carrier foils.
  • an intermediate layer which does not impair the electrical and imaging properties of the selenium layer.
  • This layer of lacquer consists of polyvinylacetal as the base material, to which there is added a portion of lampblack for increasing the conductivity, and which also contains ethyl acetal and methanol as non-conductive solvents. Since the surroundings are dust free, the surface of the layer of lacquer is very plane.
  • This layer is preferably deposited onto the metal foil in a thickness of l to 2 microns, and has a conductivity of about 1.5 siemens when containing a lampblack component of about Thereafter, the coated foil is tempered, i.e. is held in a heat furnace at a temperature of 150 C for a period of about 8 hours. Prior to this tempering heating process and the subsequent cooling, the layer of lacquer is polished by the application of pressure, in order to further improve the smooth surface finish.
  • the selenium is evaporated onto a metal surface of a layer support member to a thickness of about 60 microns under a pressure not exceeding about 10- torr (mm Hg) at a deposition rate of about 0.5 microns per minute.
  • the temperature of the metal backing member during the evaporation process is kept constant at about 60 C.
  • approximately 0.5 per cent by weight of arsenic is added to the layer of selenium during evaporation of the selenium.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Light Receiving Elements (AREA)
US438831A 1973-02-08 1974-02-01 Method of making a selenium charge carrier plate Expired - Lifetime US3925571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732306157 DE2306157C3 (de) 1973-02-08 Verfahren zur Herstellung eines elektrophotographischen Aufzeichnungsmaterials

Publications (1)

Publication Number Publication Date
US3925571A true US3925571A (en) 1975-12-09

Family

ID=5871308

Family Applications (1)

Application Number Title Priority Date Filing Date
US438831A Expired - Lifetime US3925571A (en) 1973-02-08 1974-02-01 Method of making a selenium charge carrier plate

Country Status (9)

Country Link
US (1) US3925571A (xx)
JP (1) JPS516544B2 (xx)
AU (1) AU6539974A (xx)
BR (1) BR7400884D0 (xx)
CH (1) CH567745A5 (xx)
ES (1) ES422990A1 (xx)
FR (1) FR2217734B1 (xx)
GB (1) GB1455887A (xx)
NL (1) NL7401392A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588667A (en) * 1984-05-15 1986-05-13 Xerox Corporation Electrophotographic imaging member and process comprising sputtering titanium on substrate

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739079A (en) * 1952-02-18 1956-03-20 Paul H Keck Method of making photosensitive plates
US2753278A (en) * 1951-04-14 1956-07-03 Haloid Co Method for the production of a xerographic plate
US2962376A (en) * 1958-05-14 1960-11-29 Haloid Xerox Inc Xerographic member
US3226253A (en) * 1960-08-23 1965-12-28 Int Standard Electric Corp Method of producing photosensitive layers of lead selenide
US3234020A (en) * 1961-06-21 1966-02-08 Xerox Corp Plate for electrostatic electrophotography
US3467548A (en) * 1963-07-08 1969-09-16 Xerox Corp Method of making xerographic plate by vacuum evaporation of selenium alloy
US3598644A (en) * 1964-10-12 1971-08-10 Xerox Corp Imaging member fabrication
US3615413A (en) * 1969-06-23 1971-10-26 Xerox Corp Indium doping of selenium-arsenic photoconductive alloys
US3639121A (en) * 1969-03-03 1972-02-01 Eastman Kodak Co Novel conducting lacquers for electrophotographic elements
US3652330A (en) * 1970-09-14 1972-03-28 Schjeldahl Co G T Process for coating amorphous selenium
US3709683A (en) * 1970-12-18 1973-01-09 Xerox Corp Infrared sensitive image retention photoreceptor
US3775109A (en) * 1969-05-22 1973-11-27 Ricoh Kk Electrophotographic photosensitive plate

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753278A (en) * 1951-04-14 1956-07-03 Haloid Co Method for the production of a xerographic plate
US2739079A (en) * 1952-02-18 1956-03-20 Paul H Keck Method of making photosensitive plates
US2962376A (en) * 1958-05-14 1960-11-29 Haloid Xerox Inc Xerographic member
US3226253A (en) * 1960-08-23 1965-12-28 Int Standard Electric Corp Method of producing photosensitive layers of lead selenide
US3234020A (en) * 1961-06-21 1966-02-08 Xerox Corp Plate for electrostatic electrophotography
US3467548A (en) * 1963-07-08 1969-09-16 Xerox Corp Method of making xerographic plate by vacuum evaporation of selenium alloy
US3598644A (en) * 1964-10-12 1971-08-10 Xerox Corp Imaging member fabrication
US3639121A (en) * 1969-03-03 1972-02-01 Eastman Kodak Co Novel conducting lacquers for electrophotographic elements
US3775109A (en) * 1969-05-22 1973-11-27 Ricoh Kk Electrophotographic photosensitive plate
US3615413A (en) * 1969-06-23 1971-10-26 Xerox Corp Indium doping of selenium-arsenic photoconductive alloys
US3652330A (en) * 1970-09-14 1972-03-28 Schjeldahl Co G T Process for coating amorphous selenium
US3709683A (en) * 1970-12-18 1973-01-09 Xerox Corp Infrared sensitive image retention photoreceptor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588667A (en) * 1984-05-15 1986-05-13 Xerox Corporation Electrophotographic imaging member and process comprising sputtering titanium on substrate

Also Published As

Publication number Publication date
CH567745A5 (xx) 1975-10-15
NL7401392A (xx) 1974-08-12
FR2217734A1 (xx) 1974-09-06
AU6539974A (en) 1975-08-14
ES422990A1 (es) 1976-05-01
DE2306157A1 (de) 1974-08-15
BR7400884D0 (pt) 1974-11-05
JPS516544B2 (xx) 1976-02-28
JPS49126339A (xx) 1974-12-03
GB1455887A (en) 1976-11-17
FR2217734B1 (xx) 1980-11-07
DE2306157B2 (de) 1976-11-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311