GB1130452A - Development of electrostatic images - Google Patents

Development of electrostatic images

Info

Publication number
GB1130452A
GB1130452A GB52192/65A GB5219265A GB1130452A GB 1130452 A GB1130452 A GB 1130452A GB 52192/65 A GB52192/65 A GB 52192/65A GB 5219265 A GB5219265 A GB 5219265A GB 1130452 A GB1130452 A GB 1130452A
Authority
GB
United Kingdom
Prior art keywords
toner particles
shoot
screen
particles
image
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
GB52192/65A
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
Application filed by Rank Xerox Ltd filed Critical Rank Xerox Ltd
Publication of GB1130452A publication Critical patent/GB1130452A/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
    • G03G15/06—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
    • G03G15/0803—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer in a powder cloud
    • 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
    • G03G15/0801—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer for cascading

Abstract

1,130,452. Developing electrostatic images. RANK XEROX Ltd. Dec.9, 1965 [Dec.28, 1964], No. 52192/65. Heading G2H. A method of developing an electrostatic latent image by bringing the member carrying the image into contact with a fluid dispersion of toner particles is characterized by agitating a mixture of toner particles and carrier particles in a region adjacent the member while applying an electric field, distinct from the image field, to the mixture, thereby separating the toner particles from the carrier particles and causing movement of separated toner particles from the mixture towards the image bearing member. As shown, a grid 13, Fig. 3, is placed adjacent a xerographic plate 10. A conductive shoot 18 conveys and agitates developer 14 poured from a container 16. A potential 15, of the same polarity as the toner particles is applied to the shoot causing toner particles to be separated from carrier particles due to the field between the shoot 18 and screen 13; the separated toner particles form a cloud. Large carrier particles are prevented by screen 13 from entering the image field. By applying a bias to screen 13 e. g., 10 to 130 volts, back ground deposits of toner on the plate 10 are reduced. The toner particles may be dispersed in air, carbon dioxide, nitrogen, or hydrocarbons such as kerosene or trichloro trifluor and ethane. In a modification, Fig. 4 (not shown) a xerographic drum (21) rotates past charging, exposure, development, transfer and cleaning stations. At the development station developer (31) is cascaded above a shoot (32) adjacent a screen 33.
GB52192/65A 1964-12-28 1965-12-09 Development of electrostatic images Expired GB1130452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US421306A US3470009A (en) 1964-12-28 1964-12-28 Powder cloud development of electrostatic images

Publications (1)

Publication Number Publication Date
GB1130452A true GB1130452A (en) 1968-10-16

Family

ID=23669992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52192/65A Expired GB1130452A (en) 1964-12-28 1965-12-09 Development of electrostatic images

Country Status (5)

Country Link
US (1) US3470009A (en)
DE (1) DE1497234C3 (en)
FR (1) FR1461941A (en)
GB (1) GB1130452A (en)
NL (1) NL142253B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH502590A (en) * 1968-11-04 1971-01-31 Kistler Instrumente Ag Force and / or torque measurement arrangement
US3670701A (en) * 1969-07-03 1972-06-20 Xerox Corp Two step orbital pad development
US3767446A (en) * 1969-07-03 1973-10-23 Xerox Corp Development method with oscillating brush pad
DE2110691A1 (en) * 1970-03-06 1971-09-16 Controsion Electrostatic Ltd Device for coating surfaces with powder
US3799113A (en) * 1972-06-28 1974-03-26 Xerox Corp Hybrid development of electrostatic latent image
US3865609A (en) * 1974-01-30 1975-02-11 Addressograph Multigraph Method for toning a latent image
DE2658280A1 (en) * 1976-12-22 1978-07-06 Siemens Ag METHOD OF REMOVING THE UNDERGROUND CHARGE DURING ELECTROPHOTOGRAPHIC PICTURE REPRODUCTION AND DEVICE FOR ITS IMPLEMENTATION
US4556013A (en) * 1983-11-07 1985-12-03 Xerox Corporation Screened donor for touchdown development
US4608328A (en) * 1985-05-02 1986-08-26 Xerox Corporation Donor for touchdown development

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618551A (en) * 1948-10-20 1952-11-18 Haloid Co Developer for electrostatic images
US2808328A (en) * 1950-07-15 1957-10-01 Carlyle W Jacob Method and apparatus for xerographic reproduction
US2784109A (en) * 1950-09-18 1957-03-05 Haloid Co Method for developing electrostatic images
US2808023A (en) * 1955-01-03 1957-10-01 Haloid Co Apparatus for developing electrostatic latent image
US2862472A (en) * 1956-11-29 1958-12-02 Battelle Development Corp Electrostatic image development apparatus
US3140175A (en) * 1957-07-03 1964-07-07 Edward K Kaprelian Color electrophotography
US3008826A (en) * 1958-03-06 1961-11-14 Xerox Corp Xerographic development
US3011473A (en) * 1958-05-01 1961-12-05 Xerox Corp Xerographic apparatus
US3011474A (en) * 1959-02-06 1961-12-05 Harold O Ulrich Xerographic development electrode apparatus
US3081698A (en) * 1960-03-04 1963-03-19 Electrostatic Printing Corp Electrostatic printing system
US3257223A (en) * 1962-11-01 1966-06-21 Xerox Corp Electrostatic powder cloud xerographic development method and apparatus
US3202093A (en) * 1963-02-11 1965-08-24 Electrostatic Printing Corp Electrostatic printing
US3241483A (en) * 1963-06-17 1966-03-22 Owens Illinois Glass Co Method of electrostatic screen printing
US3306193A (en) * 1964-09-14 1967-02-28 Continental Can Co Electrostatic screen printing with magnetic conveyer and moving base electrode
US3294017A (en) * 1964-10-19 1966-12-27 Owens Illinois Inc Process and apparatus for electrostatically printing on hot substrate

Also Published As

Publication number Publication date
FR1461941A (en) 1966-12-09
NL6516797A (en) 1966-06-29
DE1497234B2 (en) 1975-05-07
US3470009A (en) 1969-09-30
DE1497234A1 (en) 1969-05-08
DE1497234C3 (en) 1975-12-18
NL142253B (en) 1974-05-15

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