US3246148A - Method for the production of thermographic copies from an electrostatic powder image - Google Patents

Method for the production of thermographic copies from an electrostatic powder image Download PDF

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Publication number
US3246148A
US3246148A US268779A US26877963A US3246148A US 3246148 A US3246148 A US 3246148A US 268779 A US268779 A US 268779A US 26877963 A US26877963 A US 26877963A US 3246148 A US3246148 A US 3246148A
Authority
US
United States
Prior art keywords
image
powder
layer
infra
photoconductive 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 - Lifetime
Application number
US268779A
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English (en)
Inventor
Troeyer Karel Frans De
Jozef Leonard Van Engeland
Noe Robert Joseph
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.)
Gevaert Photo Producten NV
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Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Application granted granted Critical
Publication of US3246148A publication Critical patent/US3246148A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/398—Processes based on the production of stickiness patterns using powders
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/22—Processes involving a 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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/26—Electrographic processes using a charge pattern for the production of printing plates for non-xerographic printing processes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/26—Electrographic processes using a charge pattern for the production of printing plates for non-xerographic printing processes
    • G03G13/30—Hectographic masters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording-members for original recording by exposure, e.g. to light, to heat or to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/028—Layers in which after being exposed to heat patterns electrically conductive patterns are formed in the layers, e.g. for thermoxerography
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles

Definitions

  • the latent image or pattern is then developed, i.e., made visible inthe step B.
  • This development isexecuted according to generally known techniques wherein use, is made of the magnetic and/or electrostatic attraction or repellency of finely divided substances which are present in a powder or in a powder mixture, in an electrically insulating liquid, e.g., as a suspension, or in a gas, e.g., as aerosol.
  • an appropriate choice of the sign of the charge of the developing powder a negative or positive powder image of the original can be obtained. So, when the statement is made in this description that a negative as well as a positive powder image of the original can be formed, it is to be understood, irrespective of type, the powder image is always in conformity with the original produced.
  • FIG. 7 illustrates a device for performing the method of the present invention wherein use is made of a powder image obtained by electrophotography.
  • the supports for photoconductive layers can among others be manufactured from opaque or translucent paper or glass; they may be insulating sheets with conductive layers, thin metal sheets, etc.
  • the iron powder of the electrophotographic material is recovered.
  • the latent image is developed in the electrother-mographic material containing a powder mixture which consists of 5 g. of a toner, which is described on page 11 of the Belgian patent specification 535,951, and g. of iron filings. After fixing the image by heat a positive blackwhite copy of the colored original is obtained.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US268779A 1962-03-30 1963-03-28 Method for the production of thermographic copies from an electrostatic powder image Expired - Lifetime US3246148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2041518 1962-03-30

Publications (1)

Publication Number Publication Date
US3246148A true US3246148A (en) 1966-04-12

Family

ID=3864770

Family Applications (1)

Application Number Title Priority Date Filing Date
US268779A Expired - Lifetime US3246148A (en) 1962-03-30 1963-03-28 Method for the production of thermographic copies from an electrostatic powder image

Country Status (4)

Country Link
US (1) US3246148A (ca)
BE (1) BE615804A (ca)
CH (1) CH449670A (ca)
GB (1) GB1044364A (ca)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479953A (en) * 1966-01-27 1969-11-25 Gerhard Ritzerfeld Method of producing and regenerating regenerable printing forms
US3682095A (en) * 1970-05-22 1972-08-08 Olivetti & Co Spa Duplicating machine
US3851584A (en) * 1970-07-10 1974-12-03 Xerox Corp Chemical reproduction systems
US3900318A (en) * 1972-05-23 1975-08-19 Ciba Geigy Ag Use of sublimable disperse dyes in photoelectrophoretic image reproduction
US4016814A (en) * 1973-04-13 1977-04-12 Xerox Corporation Planographic printing master
US4073980A (en) * 1976-09-29 1978-02-14 Addressograph Multigraph Corporation Chemically treated carrier particles for use in electrophotography
US4248950A (en) * 1975-04-21 1981-02-03 Am International, Inc. Electrostatic developer mix containing either MoS2, TiS2, WS.sub.2
US4268615A (en) * 1979-05-23 1981-05-19 Matsumoto Yushi-Seiyaku Co., Ltd. Method for producing relief
US4543479A (en) * 1981-10-16 1985-09-24 Fuji Photo Film Co. Ltd. Radiation image recording and read-out system
US4990427A (en) * 1983-04-08 1991-02-05 Minolta Camera Kabushiki Kaisha Toner for developing electrostatic latent images
US6355938B1 (en) 1998-11-25 2002-03-12 Phormax Corporation Phosphor screen scanning systems
US20050012057A1 (en) * 2003-05-08 2005-01-20 Alara, Inc. Method and apparatus for radiation image erasure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1020388A (en) * 1973-05-23 1977-11-08 Addressograph-Multigraph Corporation Dry electrostatic developer mix

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB722023A (en) * 1950-11-01 1955-01-19 Dick Co Ab Improvements in or relating to method for preparing copy
US2713822A (en) * 1948-12-20 1955-07-26 Columbia Ribbon & Carbon Planographic printing
US2855324A (en) * 1955-04-07 1958-10-07 van dorn
US2884348A (en) * 1954-12-20 1959-04-28 Ibm Erasure of imprinted magnetic markings
US3054692A (en) * 1959-11-13 1962-09-18 Columbia Ribbon & Carbon Novel hectograph methods
US3086113A (en) * 1961-11-28 1963-04-16 Joseph T Mcnaney Electrostatic data recording apparatus with radiant energy input converter means
US3119014A (en) * 1960-12-09 1964-01-21 Columbia Ribbon & Carbon Novel duplicating system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713822A (en) * 1948-12-20 1955-07-26 Columbia Ribbon & Carbon Planographic printing
GB722023A (en) * 1950-11-01 1955-01-19 Dick Co Ab Improvements in or relating to method for preparing copy
US2884348A (en) * 1954-12-20 1959-04-28 Ibm Erasure of imprinted magnetic markings
US2855324A (en) * 1955-04-07 1958-10-07 van dorn
US3054692A (en) * 1959-11-13 1962-09-18 Columbia Ribbon & Carbon Novel hectograph methods
US3119014A (en) * 1960-12-09 1964-01-21 Columbia Ribbon & Carbon Novel duplicating system
US3086113A (en) * 1961-11-28 1963-04-16 Joseph T Mcnaney Electrostatic data recording apparatus with radiant energy input converter means

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479953A (en) * 1966-01-27 1969-11-25 Gerhard Ritzerfeld Method of producing and regenerating regenerable printing forms
US3682095A (en) * 1970-05-22 1972-08-08 Olivetti & Co Spa Duplicating machine
US3851584A (en) * 1970-07-10 1974-12-03 Xerox Corp Chemical reproduction systems
US3900318A (en) * 1972-05-23 1975-08-19 Ciba Geigy Ag Use of sublimable disperse dyes in photoelectrophoretic image reproduction
US4016814A (en) * 1973-04-13 1977-04-12 Xerox Corporation Planographic printing master
US4248950A (en) * 1975-04-21 1981-02-03 Am International, Inc. Electrostatic developer mix containing either MoS2, TiS2, WS.sub.2
US4093459A (en) * 1976-09-29 1978-06-06 Addressograph-Multigraph Corporation Treated carrier particles used in electrophotographic process
US4073980A (en) * 1976-09-29 1978-02-14 Addressograph Multigraph Corporation Chemically treated carrier particles for use in electrophotography
US4268615A (en) * 1979-05-23 1981-05-19 Matsumoto Yushi-Seiyaku Co., Ltd. Method for producing relief
US4543479A (en) * 1981-10-16 1985-09-24 Fuji Photo Film Co. Ltd. Radiation image recording and read-out system
US4990427A (en) * 1983-04-08 1991-02-05 Minolta Camera Kabushiki Kaisha Toner for developing electrostatic latent images
US6355938B1 (en) 1998-11-25 2002-03-12 Phormax Corporation Phosphor screen scanning systems
US20050012057A1 (en) * 2003-05-08 2005-01-20 Alara, Inc. Method and apparatus for radiation image erasure

Also Published As

Publication number Publication date
BE615804A (ca)
CH449670A (de) 1968-04-11
GB1044364A (en) 1966-09-28

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