GB1378798A - Methods of and apparatus for electrophotography - Google Patents

Methods of and apparatus for electrophotography

Info

Publication number
GB1378798A
GB1378798A GB4201072A GB4201072A GB1378798A GB 1378798 A GB1378798 A GB 1378798A GB 4201072 A GB4201072 A GB 4201072A GB 4201072 A GB4201072 A GB 4201072A GB 1378798 A GB1378798 A GB 1378798A
Authority
GB
United Kingdom
Prior art keywords
exposure
image
exposed
transparent
particles
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
Application number
GB4201072A
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.)
RCA Corp
Original Assignee
RCA 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
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1378798A publication Critical patent/GB1378798A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/22—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G13/24—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20 whereby at least two steps are performed simultaneously

Abstract

1378798 Electro-photographic process RCA CORPORATION 11 Sept 1972 [29 Oct 1971] 42010/72 Heading G2H A toner particle image 40 is formed on the surface of a photo-conductive member 30 by selective removal of part of a uniform coating of toner particles, consequent on exposure to electromagnetic radiation. The toner particles are magnetic, and adhere electrostatically to the surface of the unexposed member, but when the member is exposed and part of its surface loses its initial charge over the conductivity image so formed the particles there fly off towards a magnet 42. Preferably the member 30 is made up of a transparent substrate 32 of glass or a plastics material, a transparent electrically conductive layer 34 and a transparent photoconductive layer 36, and is exposed through its base. Alternatively the exposure may be made through the toner particle coating. The developed image may be fixed on the member 30 or transferred to a copy sheet, or may be used as a transparency to make photographic prints or for projection without fixing, in which case it can be removed by wiping or exposure to light to allow re-use of the member 30.
GB4201072A 1971-10-29 1972-09-11 Methods of and apparatus for electrophotography Expired GB1378798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19388871A 1971-10-29 1971-10-29

Publications (1)

Publication Number Publication Date
GB1378798A true GB1378798A (en) 1974-12-27

Family

ID=22715429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4201072A Expired GB1378798A (en) 1971-10-29 1972-09-11 Methods of and apparatus for electrophotography

Country Status (11)

Country Link
JP (1) JPS52380B2 (en)
AU (1) AU462206B2 (en)
BE (1) BE790678A (en)
CA (1) CA963078A (en)
CH (1) CH558031A (en)
DE (1) DE2251892A1 (en)
FR (1) FR2158877A5 (en)
GB (1) GB1378798A (en)
IT (1) IT967339B (en)
NL (1) NL7214585A (en)
ZA (1) ZA727632B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210990A (en) * 1987-10-09 1989-06-21 Brother Ind Ltd Apparatus for producing an image recording medium and method of producing the same
US4974015A (en) * 1988-12-30 1990-11-27 Brother Kogyo Kabushiki Kaisha Image recording medium producing apparatus
US5038710A (en) * 1988-11-18 1991-08-13 Brother Kogyo Kabushiki Kaisha Developer material coating apparatus
US5060011A (en) * 1988-04-28 1991-10-22 Brother Kogyo Kabushiki Kaisha Image recording apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898082A (en) * 1972-05-17 1975-08-05 Rca Corp Method of making a transparency of a colored image in a magneto-electric printing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210990A (en) * 1987-10-09 1989-06-21 Brother Ind Ltd Apparatus for producing an image recording medium and method of producing the same
US5050531A (en) * 1987-10-09 1991-09-24 Brother Kogyo Kabushiki Kaisha Apparatus for producing an image recording medium
GB2210990B (en) * 1987-10-09 1992-02-19 Brother Ind Ltd Apparatus for producing an image recording medium and method of producing the same
US5060011A (en) * 1988-04-28 1991-10-22 Brother Kogyo Kabushiki Kaisha Image recording apparatus
US5038710A (en) * 1988-11-18 1991-08-13 Brother Kogyo Kabushiki Kaisha Developer material coating apparatus
US4974015A (en) * 1988-12-30 1990-11-27 Brother Kogyo Kabushiki Kaisha Image recording medium producing apparatus

Also Published As

Publication number Publication date
CH558031A (en) 1975-01-15
JPS4852234A (en) 1973-07-23
ZA727632B (en) 1973-09-26
FR2158877A5 (en) 1973-06-15
DE2251892A1 (en) 1973-05-03
NL7214585A (en) 1973-05-02
CA963078A (en) 1975-02-18
BE790678A (en) 1973-02-15
AU4809672A (en) 1974-04-26
AU462206B2 (en) 1975-06-19
IT967339B (en) 1974-02-28
JPS52380B2 (en) 1977-01-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees