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GB1076625A - Improvements in electrostatic printing - Google Patents

Improvements in electrostatic printing

Info

Publication number
GB1076625A
GB1076625A GB47033/64A GB4703364A GB1076625A GB 1076625 A GB1076625 A GB 1076625A GB 47033/64 A GB47033/64 A GB 47033/64A GB 4703364 A GB4703364 A GB 4703364A GB 1076625 A GB1076625 A GB 1076625A
Authority
GB
United Kingdom
Prior art keywords
master
developer
roller
cylinder
transfer
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
GB47033/64A
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.)
Research Laboratories of Australia Pty Ltd
Original Assignee
Research Laboratories of Australia Pty 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 claimed from AU37824/63A external-priority patent/AU283991B2/en
Application filed by Research Laboratories of Australia Pty Ltd filed Critical Research Laboratories of Australia Pty Ltd
Publication of GB1076625A publication Critical patent/GB1076625A/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
    • 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
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/101—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer for wetting the recording material
    • 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
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/163—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wet Developing In Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Printing Methods (AREA)

Abstract

1,076,625. Printing apparatus. RESEARCH LABORATORIES OF AUSTRALIA PTY. Ltd. Nov. 18, 1964 [Nov. 19, 1963], No. 47033/64. Heading B6C. In an electrostatic printing machine using liquid developer containing toner particles, the latter is retained on the master such that at the transfer or printing station the receiving web or copy material is not in direct contact with the master, transfer of the image thereon being effected by an electric field acting through the developer liquid. In the apparatus shown, a cylinder mounted master 2 of photo-conductive material imaged with electrical insulating material and electrostatically charged at the transfer station is subjected to a light source 19 to de-energize the non-image areas prior to passing over a developer bath 11 in which three driven earthed rollers 7, 8, 9 apply liquid developer to the imaged areas. The rollers 7 and 8 do not touch the master 2 but are spaced therefrom leaving gaps 13 and 14 respectively. The transfer station comprising a spring-loaded web receiving roller 4 is located adjacent the developer bath 11 such that the master is still covered with liquid developer to a thickness sufficient to bridge the gap 17 between the roller 4 and the master cylinder 1. A voltage is applied across this gap to simultaneously transfer the image from the master on to the web 6 and re-charge the master prior to its subsequent use. A small electrical bias is applied at the developer station to prevent particles in the developer liquid from contacting the non-image areas. The roller 4 may be placed near the cylinder 1 within the 60 degree arc shown in Fig. 1. Both the cylinder 1 and roller 4 are belt-driven from a common source, the belts driving the cylinder being at each end and contacting the roller 4 such that the space 17 is in effect ordained by the thickness of the belts.
GB47033/64A 1963-11-19 1964-11-18 Improvements in electrostatic printing Expired GB1076625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU37824/63A AU283991B2 (en) 1963-11-19 Improvements in electrostatic printing

Publications (1)

Publication Number Publication Date
GB1076625A true GB1076625A (en) 1967-07-19

Family

ID=3724831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47033/64A Expired GB1076625A (en) 1963-11-19 1964-11-18 Improvements in electrostatic printing

Country Status (5)

Country Link
US (1) US3355288A (en)
BE (1) BE655993A (en)
DE (1) DE1497087A1 (en)
FR (1) FR1421638A (en)
GB (1) GB1076625A (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1522745C3 (en) * 1965-05-28 1973-10-31 Xerox Corp., Rochester, N.Y. (V.St.A.) Electrophoretophotographic process
US3663219A (en) * 1967-05-23 1972-05-16 Canon Camera Co Electrophotographic process
US3899249A (en) * 1967-05-23 1975-08-12 Canon Kk Electrophotographic apparatus
US3470850A (en) * 1967-12-06 1969-10-07 Agfa Gevaert Ag Apparatus for developing electrostatic charge images
US3972611A (en) * 1970-03-18 1976-08-03 Canon Kabushiki Kaisha Apparatus for transferring images produced by liquid developer
US4218246A (en) * 1970-03-18 1980-08-19 Canon Kabushiki Kaisha Method of electrophotographic recording involving removal of excess developer liquid by corona treatment
JPS4917531B1 (en) * 1970-08-28 1974-05-01
US3980475A (en) * 1972-07-27 1976-09-14 La Cellophane Process of transferring an electrostatic latent image to a dielectric support
US3844820A (en) * 1972-08-09 1974-10-29 Bethlehem Steel Corp Method of applying a coating to both sides of a moving strip
FR2220814A2 (en) * 1973-03-09 1974-10-04 Cellophane Sa Photoelectrostatic reproduction - by transferring image on photoconductive plate to a receptor using electric field
JPS5013636U (en) * 1973-05-31 1975-02-13
JPS5334050B2 (en) * 1973-08-27 1978-09-19
FR2252597B1 (en) * 1973-11-26 1976-10-01 Cellophane Sa
GB1574150A (en) * 1976-12-31 1980-09-03 Xerox Corp Electrostatographic imaging apparatus
US4256820A (en) * 1978-05-22 1981-03-17 Savin Corporation Method of electrophotography using low intensity exposive
US4522484A (en) * 1978-05-22 1985-06-11 Savin Corporation Electrophotographic apparatus for increasing the apparent sensitivity of photoconductors
US4286039A (en) * 1979-05-15 1981-08-25 Savin Corporation Method and apparatus for removing excess developing liquid from photoconductive surfaces
US4364661A (en) * 1980-05-13 1982-12-21 Savin Corporation Process and apparatus for transferring developed electrostatic images to a carrier sheet, improved carrier sheet for use in the process and method of making the same
FI812200A7 (en) * 1980-07-24 1982-01-25 Better Methods Improvements related to electrostatic printing.
DE3043736C2 (en) * 1980-11-20 1983-11-10 Hoechst Ag, 6230 Frankfurt Method for transferring a toner image
US4378422A (en) * 1981-03-31 1983-03-29 Savin Corporation Method and apparatus for transferring developed electrostatic images to a carrier sheet
NL8102224A (en) * 1981-05-07 1982-12-01 Philips Nv METHOD FOR MAKING AN IMAGE FOR A COLOR IMAGE TUBE BY ELECTROPHOTOGRAPHIC ROAD
FR2557317B1 (en) * 1983-12-22 1986-04-18 Rhone Poulenc Syst ELECTROPHOTOGRAPHIC REPRODUCTION METHOD, WITH REVERSE DEVELOPMENT, ON A CONDUCTIVE MEDIUM USING A SINGLE-COMPONENT MAGNETIC DEVELOPING POWDER AND DEVICE FOR CARRYING OUT THE METHOD
US4648704A (en) * 1985-11-29 1987-03-10 Eastman Kodak Company Method and apparatus for applying liquid toner to a recording member
US4708460A (en) * 1986-07-25 1987-11-24 Xerox Corporation Simultaneous transfer and fusing in electrophotography

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637651A (en) * 1948-10-02 1953-05-05 Battelle Development Corp Method of producing images on rigid surfaces
US3284224A (en) * 1963-01-04 1966-11-08 Xerox Corp Controlled xerographic development
US3271146A (en) * 1963-03-19 1966-09-06 Eastman Kodak Co Xeroprinting with photoconductors exhibiting charge-storage asymmetry
US3203395A (en) * 1963-06-14 1965-08-31 Addressograph Multigraph Apparatus for developing electrostatic images
US3232190A (en) * 1963-06-28 1966-02-01 Ibm Method and apparatus for copying

Also Published As

Publication number Publication date
DE1497087A1 (en) 1969-03-27
BE655993A (en) 1965-03-16
US3355288A (en) 1967-11-28
FR1421638A (en) 1965-12-17

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