GB930072A - Xerographic developing apparatus - Google Patents

Xerographic developing apparatus

Info

Publication number
GB930072A
GB930072A GB24682/59A GB2468259A GB930072A GB 930072 A GB930072 A GB 930072A GB 24682/59 A GB24682/59 A GB 24682/59A GB 2468259 A GB2468259 A GB 2468259A GB 930072 A GB930072 A GB 930072A
Authority
GB
United Kingdom
Prior art keywords
development
xerographic
slots
electrode
developing apparatus
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
GB24682/59A
Inventor
Herbert E Crumrine
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 Ltd
Original Assignee
Rank Xerox Ltd
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 to US725702A priority Critical patent/US2942573A/en
Application filed by Rank Xerox Ltd filed Critical Rank Xerox Ltd
Priority to GB24682/59A priority patent/GB930072A/en
Publication of GB930072A publication Critical patent/GB930072A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0803Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer in a powder cloud

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

930,072. Development of electrostatic charge images. RANK-XEROX Ltd. July 17, 1959, No. 24682/59. Class 98 (2). To avoid the defects known as " tearing " and " streaking " which occur in powder cloud development of xerographic or other electrostatic charge images, a developing apparatus is provided with two inlet slots located in an electrode element transversely of a development zone defined by the electrode element and a closely adjacent xerographic or other electrostatic image-bearing plate for flowing developer material into the development zone and an exhaust slot between the inlet slots for withdrawing excess developer from the development zone. Preferably, as shown, the apparatus comprises a manifold assembly having inlet slots 27 on opposite sides of an exhaust slot 35 with supplementary exhaust slots 42 flanking them. Powder cloud generators 28 feed the slots 27 via conduits 30 with if required the interposition of charging devices 29, e.g. a narrow tube through which electroscopic powder is passed in turbulent flow or a corona discharge device to obtain a more uniformly charged cloud and reduced pressure is applied over exhaust ducts 40, 45, dampers 47 (Fig. 1, not shown) being provided in each duct, the extracted developer being collected at 41. Rollers 12 carried by the frame of the developing apparatus allow the xerographic plate to move past the development electrode at a constant distance. The development electrode may be curved so as to conform to a xerographic drum surface.
GB24682/59A 1958-04-01 1959-07-17 Xerographic developing apparatus Expired GB930072A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US725702A US2942573A (en) 1958-04-01 1958-04-01 Xerographic developing apparatus
GB24682/59A GB930072A (en) 1958-04-01 1959-07-17 Xerographic developing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US725702A US2942573A (en) 1958-04-01 1958-04-01 Xerographic developing apparatus
GB24682/59A GB930072A (en) 1958-04-01 1959-07-17 Xerographic developing apparatus

Publications (1)

Publication Number Publication Date
GB930072A true GB930072A (en) 1963-07-03

Family

ID=26257237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24682/59A Expired GB930072A (en) 1958-04-01 1959-07-17 Xerographic developing apparatus

Country Status (2)

Country Link
US (1) US2942573A (en)
GB (1) GB930072A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128293B (en) * 1959-11-18 1962-04-19 Bayer Ag Apparatus for the electrophotographic production of images
US3144354A (en) * 1960-03-10 1964-08-11 Keuffel & Esser Co Electrographic printer
US3196832A (en) * 1963-02-20 1965-07-27 Rca Corp Fluid applicator apparatus
US3176653A (en) * 1963-02-20 1965-04-06 Rca Corp Fluid applicator apparatus
US3517993A (en) * 1965-10-23 1970-06-30 Bell & Howell Co Development apparatus for continuous rotary electrostatographic apparatus
US3816157A (en) * 1969-08-06 1974-06-11 Xerox Corp Toner reclaiming method
US4047950A (en) * 1974-04-08 1977-09-13 A. B. Dick/Scott Method for developing an electrostatic latent image on an electrophotographic film
US4198923A (en) * 1978-05-08 1980-04-22 Gould Inc. Toning apparatus for electrostatic printing and plotting machines
DE3138507C2 (en) * 1981-09-28 1983-08-18 Siemens AG, 1000 Berlin und 8000 München Device for developing an electrostatic charge image with toner particles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808023A (en) * 1955-01-03 1957-10-01 Haloid Co Apparatus for developing electrostatic latent image
US2815734A (en) * 1955-02-01 1957-12-10 Battelle Development Corp Apparatus for developing xerographic image
US2843084A (en) * 1955-06-16 1958-07-15 Haloid Co Xerographic apparatus with endless development electrode
US2842456A (en) * 1955-08-30 1958-07-08 Battelle Development Corp Process for developing an electrostatic image

Also Published As

Publication number Publication date
US2942573A (en) 1960-06-28

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