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GB1496961A - Signal amplification by illumination of a partially developed electrostatic latent image - Google Patents

Signal amplification by illumination of a partially developed electrostatic latent image

Info

Publication number
GB1496961A
GB1496961A GB7814/75A GB781475A GB1496961A GB 1496961 A GB1496961 A GB 1496961A GB 7814/75 A GB7814/75 A GB 7814/75A GB 781475 A GB781475 A GB 781475A GB 1496961 A GB1496961 A GB 1496961A
Authority
GB
United Kingdom
Prior art keywords
latent image
illumination
developing
electrostatic latent
photo
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
GB7814/75A
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of GB1496961A publication Critical patent/GB1496961A/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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/221—Machines other than electrographic copiers, e.g. electrophotographic cameras, electrostatic typewriters
    • G03G15/222—Machines for handling xeroradiographic images, e.g. xeroradiographic processors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

1496961 Electro-photography XEROX CORP 25 Feb 1975 [4 March 1974] 7814/75 Heading G2H An imaging process comprises increasing the potential difference between two adjacent electrostatic charge patterns of different charge density on a photo-conductive surface by lightly developing with toner particles and exposing to light through the thus formed mask of toner particles, and then fully developing the resultant increased contrast latent image. The invention is particularly applicable to x-ray photography where, in order to keep the exposure to a minimum, the exposure is insufficient to reduce the charge potential on the non-shadow parts of the photo-conductive surface to zero but reduces it only to an intermediate level, e.g. half the shadow area charge potential. An apparatus for carrying out the process, which utilizes a powder cloud developing device, is described and illustrated.
GB7814/75A 1974-03-04 1975-02-25 Signal amplification by illumination of a partially developed electrostatic latent image Expired GB1496961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448128A US3914609A (en) 1974-03-04 1974-03-04 Signal amplification by illumination of a partially developed latent electrostatic image

Publications (1)

Publication Number Publication Date
GB1496961A true GB1496961A (en) 1978-01-05

Family

ID=23779117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7814/75A Expired GB1496961A (en) 1974-03-04 1975-02-25 Signal amplification by illumination of a partially developed electrostatic latent image

Country Status (6)

Country Link
US (1) US3914609A (en)
JP (1) JPS50120840A (en)
DE (1) DE2506728A1 (en)
FR (1) FR2263543B1 (en)
GB (1) GB1496961A (en)
NL (1) NL7502360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939850A1 (en) * 1978-11-09 1980-05-22 Savin Corp METHOD AND DEVICE FOR IMPROVING THE SHARPNESS OF ELECTROSTATIC CHARGING IMAGES

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4038943A (en) * 1974-06-05 1977-08-02 Xerox Corporation Signal amplification by charging and illuminating a partially developed latent electrostatic image
FR2279137A1 (en) * 1974-07-19 1976-02-13 Xonics Inc SENSITIVE SHEET FOR ELECTRONIC RADIOGRAPHY
DE2436894A1 (en) * 1974-07-31 1976-02-19 Siemens Ag DEVICE AND METHOD FOR RECORDING AND REPRODUCING ROENTGEN IMAGES
GB1541834A (en) * 1975-03-19 1979-03-07 Agfa Gevaert Radiographiy
CA1129481A (en) * 1978-05-22 1982-08-10 Benzion Landa Method of electrophotography and apparatus for practicing the same
US4278884A (en) * 1978-11-09 1981-07-14 Savin Corporation Method and apparatus for xeroradiography
JPH0614170B2 (en) * 1984-10-20 1994-02-23 富士写真フイルム株式会社 Radiation image information reader
JPS63260424A (en) * 1987-04-17 1988-10-27 Mazda Motor Corp Manufacture of multi-layer blow molded vessel
US5023661A (en) * 1989-04-10 1991-06-11 Xerox Corporation Precharging of the X-ray photoreceptor to eliminate the fatigue artifact
CN108968995A (en) * 2018-08-20 2018-12-11 创辉医疗器械江苏有限公司 A kind of bone positioning film and bone localization method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756676A (en) * 1953-05-04 1956-07-31 Haloid Co Method for the production of electrophotographic prints
US2711481A (en) * 1954-06-09 1955-06-21 Haloid Co Xeroradiography method and device
US3146100A (en) * 1960-01-26 1964-08-25 Bohn Business Machines Inc Electronic photocopying apparatus and method
US3603790A (en) * 1968-04-30 1971-09-07 Kodak Ltd Electroradiographic process
US3830645A (en) * 1971-01-11 1974-08-20 Pitney Bowes Inc Method and apparatus for creating an electrostatic latent image by charge modulation
JPS4856434A (en) * 1971-11-16 1973-08-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939850A1 (en) * 1978-11-09 1980-05-22 Savin Corp METHOD AND DEVICE FOR IMPROVING THE SHARPNESS OF ELECTROSTATIC CHARGING IMAGES

Also Published As

Publication number Publication date
US3914609A (en) 1975-10-21
NL7502360A (en) 1975-09-08
FR2263543B1 (en) 1979-08-24
JPS50120840A (en) 1975-09-22
DE2506728A1 (en) 1975-09-11
FR2263543A1 (en) 1975-10-03

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed