GB693905A - Method and apparatus for developing electrostatic images with electroscopic powder - Google Patents

Method and apparatus for developing electrostatic images with electroscopic powder

Info

Publication number
GB693905A
GB693905A GB5565/50A GB556550A GB693905A GB 693905 A GB693905 A GB 693905A GB 5565/50 A GB5565/50 A GB 5565/50A GB 556550 A GB556550 A GB 556550A GB 693905 A GB693905 A GB 693905A
Authority
GB
United Kingdom
Prior art keywords
powder
plate
charge
drum
insulating layer
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
GB5565/50A
Inventor
Lewis Edmund Walkup
Donald Leroy Fauser
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.)
Battelle Development Corp
Original Assignee
Battelle Development 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 Battelle Development Corp filed Critical Battelle Development Corp
Publication of GB693905A publication Critical patent/GB693905A/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
    • G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
    • G03G15/30—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Methods (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)

Abstract

693,905. Producing photographs electrically. BATTELLE DEVELOPMENT CORPORATION. March 6, 1950, No. 5565/50. Class 98 (ii). [Also in Group XVI] An electrostatically charged image-wise insulating layer supported on a conductive plate is developed by applying an electrostaticallycharged powder to the layer and simultaneously inducing on the non-insulated area of the plate, by applying an electrostatic field across its thickness, a charge having a polarity opposite to that of the charge on the layer and the same as the charge on the developing powder to repel powder from the non-insulated areas. Preferably the powder is applied between the plate and an adjacent electrode between which the electrostatic field is produced, the potential applied to the electrode being of the same polarity as that of the charge on the layer. As shown, an image-wise insulating layer on a conducting plate 2 on a drum 1 is charged by means of discharge points 13 and, if desired, additional points 15,16, and electrostatic-image developing powder is poured from a store 3 on to the plate to the charged areas of which it adheres, the surplus falling into a receiver 5. Concentric with the drum over the powder-applying region is a part-cylindrical electrode 17 which is held at a potential of the same sign as the charge on the insulating layer on the plate 2, a charge of opposite sign being induced on the uncoated areas of the plate. When a developer powder, comprising an electroscopic powder and a granular carrier which generate opposite triboelectric charges on each other, is fed to the drum, the electroscopic powder having a charge opposite to that on the insulating layer, the uncoated parts of the plate repel the powder which is thus retained only imagewise. The powder image is then transferred to a paper strip 6 fed round the drum by means of a corona discharge from the point 13, whereafter the paper is peeled from the drum by fingers 8, and passed over heaters 12 which fuse the electroscopic powder to the paper, the record so produced being finally wound up at 11. Excess powder remaining on the plate after the transfer is removed by any suitable means 14. Specifications 658,699, 675,398 and 679,715 are referred to.
GB5565/50A 1948-11-02 1950-03-06 Method and apparatus for developing electrostatic images with electroscopic powder Expired GB693905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57962A US2573881A (en) 1948-11-02 1948-11-02 Method and apparatus for developing electrostatic images with electroscopic powder

Publications (1)

Publication Number Publication Date
GB693905A true GB693905A (en) 1953-07-08

Family

ID=22013791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5565/50A Expired GB693905A (en) 1948-11-02 1950-03-06 Method and apparatus for developing electrostatic images with electroscopic powder

Country Status (5)

Country Link
US (1) US2573881A (en)
CH (1) CH286142A (en)
DE (1) DE903414C (en)
FR (1) FR1017567A (en)
GB (1) GB693905A (en)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752833A (en) * 1950-07-15 1956-07-03 Carlyle W Jacob Apparatus for reproduction of pictures
US2784109A (en) * 1950-09-18 1957-03-05 Haloid Co Method for developing electrostatic images
US2684901A (en) * 1950-12-19 1954-07-27 Haloid Co Image transfer device
US2826634A (en) * 1951-04-14 1958-03-11 Atkinson Method and means for magnetic reproduction of pictures
US2701765A (en) * 1951-06-18 1955-02-08 Haloid Co Xerographic fusing apparatus
US2684902A (en) * 1951-11-23 1954-07-27 Haloid Co Image transfer mechanism for electrostatically adhering images
US2887023A (en) * 1951-11-26 1959-05-19 Rca Corp Electrostatic printer
US2796832A (en) * 1952-03-27 1957-06-25 Harris Seybold Co Plate dampening means
US2824813A (en) * 1952-05-12 1958-02-25 Haloid Co Method for developing electrostatic latent images
US2761416A (en) * 1953-01-02 1956-09-04 Battelle Development Corp Development mechanism for electrostatic images
US2792752A (en) * 1953-07-01 1957-05-21 Rca Corp Method of and means for controlling light
US2781705A (en) * 1953-10-29 1957-02-19 Herbert E Crumrine Paper handling mechanism for xerographic copying machine
US2838997A (en) * 1953-10-30 1958-06-17 Rca Corp Electrostatic image copying method
US2895847A (en) * 1953-12-21 1959-07-21 Battelle Development Corp Electric image development
US2965573A (en) * 1958-05-02 1960-12-20 Haloid Xerox Inc Xerographic developer
US2777418A (en) * 1954-02-08 1957-01-15 Haloid Co Apparatus for developing a powder image on a xerographic plate
NL195972A (en) * 1954-03-29
GB774043A (en) * 1954-05-05 1957-05-01 Bendix Aviat Corp Sonic transducer with mechanical motion transformer
US2937912A (en) * 1954-05-14 1960-05-24 Cymmer Thomas Device for making a record and displaying it
US2943908A (en) * 1954-08-02 1960-07-05 Gen Electric Apparatus for recording and portraying a visible magnetic image
US2834132A (en) * 1954-12-14 1958-05-13 American Type Founders Co Inc Electrostatic applying and holding device
US3052564A (en) * 1954-12-20 1962-09-04 Ibm Printing with magnetic ink
US2808023A (en) * 1955-01-03 1957-10-01 Haloid Co Apparatus for developing electrostatic latent image
US2952241A (en) * 1955-02-03 1960-09-13 Haloid Xerox Inc Developer electrode for electrophotographic apparatus
US2784694A (en) * 1955-02-08 1957-03-12 Haloid Co Segmented development electrode
US2862646A (en) * 1955-02-18 1958-12-02 Haloid Xerox Inc Powder particle aerosol generator
US2779306A (en) * 1955-03-25 1957-01-29 Ibm Electroscopic toner metering device
US2872338A (en) * 1955-04-18 1959-02-03 Haloid Xerox Inc Electrophotographic developing process
US2932278A (en) * 1955-05-03 1960-04-12 Sperry Rand Corp Single print magnetic printer
US2914403A (en) * 1955-05-17 1959-11-24 Rca Corp Electrostatic printing
US2844123A (en) * 1955-06-16 1958-07-22 Haloid Xerox Inc Belt development electrode
US2843084A (en) * 1955-06-16 1958-07-15 Haloid Co Xerographic apparatus with endless development electrode
US2955938A (en) * 1955-08-01 1960-10-11 Haloid Xerox Inc Xerography
US3138458A (en) * 1955-09-30 1964-06-23 Minnesota Mining & Mfg Electrophotography
US2986466A (en) * 1955-12-06 1961-05-30 Edward K Kaprelian Color electrophotography
US2900515A (en) * 1956-03-16 1959-08-18 Edward L Criscuolo Radiography by gas ionization
DE1058840B (en) * 1956-03-19 1959-06-04 Zindler Lumoprint Kg Continuous development and fixing device for sheet-shaped photoconductive layers
DE1059287B (en) * 1956-03-28 1959-06-11 Zindler Lumoprint Kg Continuous copier and developer
DE1058841B (en) * 1956-04-24 1959-06-04 Zindler Lumoprint Kg Device for making copies on photoconductive layers
US2880696A (en) * 1956-05-02 1959-04-07 Haloid Xerox Inc Apparatus for developing an electrostatic latent image
US2807704A (en) * 1956-06-14 1957-09-24 Ibm Xerographic image fixing apparatus
BE558347A (en) * 1956-06-14
US2894799A (en) * 1956-08-23 1959-07-14 Gen Telephone Lab Inc High speed recorder system
US2932690A (en) * 1956-09-21 1960-04-12 Addressograph Multigraph Apparatus for image reproduction
US2968552A (en) * 1956-10-01 1961-01-17 Haloid Xerox Inc Xerographic apparatus and method
US3004860A (en) * 1957-04-24 1961-10-17 Xerox Corp Induction powder transfer
US2879396A (en) * 1957-05-03 1959-03-24 Plastics-treating apparatus
US2996573A (en) * 1957-05-13 1961-08-15 Dick Co Ab Television projection system employing electrostatic printing
US2912586A (en) * 1957-11-01 1959-11-10 Haloid Xerox Inc Xerographic charging
US3039388A (en) * 1958-01-02 1962-06-19 Harris Intertype Corp Printing press and sheet control device therefor
DE1139741B (en) * 1958-05-29 1962-11-15 Janos Szekeres Electrophotographic copy machine
US3033765A (en) * 1958-06-06 1962-05-08 Eastman Kodak Co Photographic production of electrically conducting silver images
US3311490A (en) * 1958-09-23 1967-03-28 Harris Intertype Corp Developing electrostatic charge image with a liquid developer of two immiscible phases
US3011474A (en) * 1959-02-06 1961-12-05 Harold O Ulrich Xerographic development electrode apparatus
DE1192045B (en) * 1959-04-18 1965-04-29 Wilhelm Uhrig Electrophotographic process for making images
US3160091A (en) * 1959-05-14 1964-12-08 Xerox Corp High speed xeroprinter and method therefor
BE600101A (en) * 1960-02-13
US3105770A (en) * 1960-04-15 1963-10-01 Xerox Corp Cascade development improvement
US3053962A (en) * 1960-08-01 1962-09-11 Xerox Corp Xerographic fusing apparatus
US3117891A (en) * 1960-09-26 1964-01-14 Xerox Corp Xerographic apparatus
NL294591A (en) * 1961-07-14
US3306198A (en) * 1963-12-04 1967-02-28 Continental Can Co Electrostatic printing process
US3424131A (en) * 1964-09-30 1969-01-28 Xerox Corp Electroded cascade development system
DE1797613C2 (en) * 1965-03-01 1980-06-26 Rank Xerox Ltd., London Device for developing electrostatic charge images
US3332328A (en) * 1965-03-01 1967-07-25 Xerox Corp Xerographic developer seal and process
US3349676A (en) * 1965-04-02 1967-10-31 Xerox Corp Xerographic development electrode apparatus
SE315501B (en) * 1965-07-01 1969-09-29 Rank Xerox Ltd
US3320879A (en) * 1965-10-08 1967-05-23 Monsanto Co Ink delivery system employing vibrating wires
US3363552A (en) * 1965-10-20 1968-01-16 Continental Can Co Methods and apparatus for minimizing screen patterns in xerography, electrostatic screen process and other forms of printing
US3412710A (en) * 1966-10-11 1968-11-26 Xerox Corp Cleanup electrode
US3443517A (en) * 1967-01-04 1969-05-13 Xerox Corp Electrostatic duplicating system employing relief printing plate
GB1219443A (en) * 1967-07-01 1971-01-13 Fuji Photo Film Co Ltd A reversal development process for electrophotography
US3833364A (en) * 1968-11-18 1974-09-03 Xerox Corp Method of developing electrostatic image charge
US3649262A (en) * 1968-12-31 1972-03-14 Xerox Corp Simultaneous development-cleaning of the same area of an electrostatographic image support surface
US3719169A (en) * 1971-05-07 1973-03-06 Xerox Corp Plural electrode development apparatus
US3807997A (en) * 1971-05-07 1974-04-30 Xerox Corp Plural electrode development methods for latent electrostatic images
US3888666A (en) * 1971-12-22 1975-06-10 Rank Xerox Ltd Reversal developing method using photoconductive developing electrode
US3960556A (en) * 1973-03-01 1976-06-01 Addressograph Multigraph Corporation Constant current toner transfer
US3869910A (en) * 1973-06-18 1975-03-11 Xerox Corp Diagnostic test device for developer materials
US3857560A (en) * 1973-07-23 1974-12-31 Xerox Corp Adhesive paper pick-off system
US3893800A (en) * 1973-11-14 1975-07-08 Rank Xerox Ltd Backside heating and fixing apparatus in an electronic photograph duplicator
US3918403A (en) * 1973-11-23 1975-11-11 Xerox Corp Corona transfer mechanism
GB1595802A (en) * 1977-01-05 1981-08-19 Payne J M Electrophotographic copying
US4350435A (en) * 1980-04-04 1982-09-21 Eastman Kodak Company Copy contrast and density control
US5213042A (en) * 1992-02-25 1993-05-25 The Nuventures Foundation Printing process and apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2221776A (en) * 1938-09-08 1940-11-19 Chester F Carlson Electron photography
US2297691A (en) * 1939-04-04 1942-10-06 Chester F Carlson Electrophotography
US2359476A (en) * 1940-01-15 1944-10-03 Harper J Ransburg Company Electrostatic method and apparatus
US2357809A (en) * 1940-11-16 1944-09-12 Chester F Carlson Electrophotographic apparatus
US2483462A (en) * 1945-05-03 1949-10-04 William C Huebner Process and apparatus for electronographic printing

Also Published As

Publication number Publication date
DE903414C (en) 1954-02-04
US2573881A (en) 1951-11-06
FR1017567A (en) 1952-12-12
CH286142A (en) 1952-10-15

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