FR2448171A1 - PROCESS FOR MANUFACTURING A PLATE FOR MAGNETIC DUPLICATION - Google Patents

PROCESS FOR MANUFACTURING A PLATE FOR MAGNETIC DUPLICATION

Info

Publication number
FR2448171A1
FR2448171A1 FR8001993A FR8001993A FR2448171A1 FR 2448171 A1 FR2448171 A1 FR 2448171A1 FR 8001993 A FR8001993 A FR 8001993A FR 8001993 A FR8001993 A FR 8001993A FR 2448171 A1 FR2448171 A1 FR 2448171A1
Authority
FR
France
Prior art keywords
layer
image
shaped
manufacturing
plate
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.)
Granted
Application number
FR8001993A
Other languages
French (fr)
Other versions
FR2448171B1 (en
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Nederland BV
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 Oce Nederland BV filed Critical Oce Nederland BV
Publication of FR2448171A1 publication Critical patent/FR2448171A1/en
Application granted granted Critical
Publication of FR2448171B1 publication Critical patent/FR2448171B1/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
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PROCEDE DE PRODUCTION D'UN CLICHE POUR DUPLICATION MAGNETIQUE. IL COMPREND LES ETAPES SELON LESQUELLES: A.ON FORME DES PARTIES D'IMAGE CONSTITUEES DE PERFORATIONS DANS UNE COUCHE HOMOGENE MAGNETISABLE DE MANIERE PERMANENTE, EN ENLEVANT LA COUCHE MAGNETISABLE; ET B.ON MAGNETISE LA COUCHE MAGNETISABLE DANS UN CHAMP MAGNETIQUE HOMOGENE. LES PERFORATIONS FORMANT LES PARTIES D'IMAGE, PEUVENT ETRE FORMEES DANS LA COUCHE MAGNETISABLE DE MANIERE PERMANENTE DE PLUSIEURS MANIERES. DE PREFERENCE, ELLES SONT FORMEES PAR DECOUPAGE SOUS L'INFLUENCE DE DECHARGES ELECTRIQUES PRODUITES PAR UNE ELECTRODE EN FORME D'AIGUILLE, DONT L'EXCITATION EST COMMANDEE PAR UN DISPOSITIF D'EXPLORATION QUI EXPLORE L'IMAGE DE L'ORIGINAL A REPRODUIRE. APPLICATION A LA REPRODUCTION DES DOCUMENTS.PROCESS FOR THE PRODUCTION OF A CLICK FOR MAGNETIC DUPLICATION. IT INCLUDES THE STEPS ACCORDING TO WHICH: A. PARTS OF THE IMAGE CONSTITUTED OF PERFORATIONS IN A HOMOGENEOUS LAYER PERMANENTLY MAGNETIZABLE, BY REMOVING THE MAGNETISABLE LAYER; AND B. WE MAGNETIZE THE MAGNETISABLE LAYER IN A HOMOGENEOUS MAGNETIC FIELD. THE PERFORATIONS FORMING THE IMAGE PARTS CAN BE SHAPED IN THE MAGNETIZABLE LAYER PERMANENTLY IN SEVERAL WAYS. PREFERABLY, THEY ARE SHAPED BY CUTTING UNDER THE INFLUENCE OF ELECTRIC DISCHARGES PRODUCED BY A NEEDLE-SHAPED ELECTRODE, THE EXCITATION OF WHICH IS CONTROLLED BY AN EXPLORATION DEVICE WHICH EXPLORES THE IMAGE OF THE ORIGINAL TO BE REPRODUCED. APPLICATION TO THE REPRODUCTION OF DOCUMENTS.

FR8001993A 1979-02-01 1980-01-30 PROCESS FOR MANUFACTURING A PLATE FOR MAGNETIC DUPLICATION Expired FR2448171B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7900808A NL7900808A (en) 1979-02-01 1979-02-01 METHOD FOR MANUFACTURING A MOTHERBOARD FOR MAGNETIC DUPLICATION

Publications (2)

Publication Number Publication Date
FR2448171A1 true FR2448171A1 (en) 1980-08-29
FR2448171B1 FR2448171B1 (en) 1985-09-27

Family

ID=19832558

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8001993A Expired FR2448171B1 (en) 1979-02-01 1980-01-30 PROCESS FOR MANUFACTURING A PLATE FOR MAGNETIC DUPLICATION

Country Status (5)

Country Link
JP (1) JPS55103577A (en)
DE (1) DE3003454A1 (en)
FR (1) FR2448171B1 (en)
GB (1) GB2040814B (en)
NL (1) NL7900808A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6815243A (en) * 1967-10-24 1969-04-28
GB1255344A (en) * 1969-08-14 1971-12-01 Standard Telephones Cables Ltd Apparatus for displaying and printing information

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793135A (en) * 1955-12-01 1957-05-21 Sperry Rand Corp Method and apparatus for preparing a latent magnetic image
LU37087A1 (en) * 1958-04-10
US3118789A (en) * 1961-07-18 1964-01-21 Warren S D Co Electrically conductive coated paper
DE1201372B (en) * 1964-02-06 1965-09-23 Agfa Ag Method, device and printing ink for image generation by means of a magnetizable substance
US3526191A (en) * 1966-10-24 1970-09-01 Xerox Corp Duplicating process employing magnetic developer material
DE1772382A1 (en) * 1967-05-08 1971-04-01 Du Pont Thermomagnetic copying process and device for thermomagnetic recording
LU56891A1 (en) * 1967-09-21 1969-06-18
NL6802268A (en) * 1968-02-16 1968-04-25

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6815243A (en) * 1967-10-24 1969-04-28
US3477368A (en) * 1967-10-24 1969-11-11 Itt Printing apparatus employing magnetic transfer band in which image impressions can be made
GB1255344A (en) * 1969-08-14 1971-12-01 Standard Telephones Cables Ltd Apparatus for displaying and printing information

Also Published As

Publication number Publication date
GB2040814B (en) 1983-02-09
DE3003454A1 (en) 1980-08-14
NL7900808A (en) 1980-08-05
JPS55103577A (en) 1980-08-07
FR2448171B1 (en) 1985-09-27
GB2040814A (en) 1980-09-03
DE3003454C2 (en) 1988-12-01
JPS6243184B2 (en) 1987-09-11

Similar Documents

Publication Publication Date Title
DE3069474D1 (en) Method of and apparatus for performing reactions in a fluid medium
FR2651367B1 (en) METHOD AND APPARATUS FOR FORMING MAGNETIZED ZONES ON A MAGNETIZABLE BODY.
FR2448171A1 (en) PROCESS FOR MANUFACTURING A PLATE FOR MAGNETIC DUPLICATION
US2758905A (en) Magnetic recording apparatus
FR2374118A1 (en) ACICULAR FERROMAGNETIC METAL PARTICLES AND THEIR MANUFACTURING PROCESS
GB1507947A (en) Micro-electronic device fabrication
GB1340685A (en) Transparent electrode
EP0396359A3 (en) Developing process excellent in image reproducibility
US3144520A (en) Magnetostrictive record and recording apparatus
Kronenberg et al. Relation between Colloid Pattern and Permanent Magnet Precipitate during the Magnetization Reversal in Alnico V
JPS56127930A (en) Magnetic recording medium
US1882336A (en) Pick-up apparatus for magnetic films
JPS6279482A (en) Developing device
JPS57152516A (en) Magnetic recording medium
Ozkan Compaction and sintering of ceramic powders
JPS54143116A (en) Magnetic recording medium
JPS5797483A (en) Portable timepiece with resistance to alternating-current and direct-current magnetism
JPS5247734A (en) Photoelectrostatic recording method
EP0214644A3 (en) Method of producing ferromagnetic particles
Grove et al. Sparkostrictive spark chambers with piezoelectric readout
JPS5339707A (en) Magnetic recording medium
SU607794A1 (en) Method of tempering sheet glass
ES276478U (en) Magnetic retainer (Machine-translation by Google Translate, not legally binding)
ES276469U (en) Magnetic retainer (Machine-translation by Google Translate, not legally binding)
JPS5994221A (en) Thin film magnetic head

Legal Events

Date Code Title Description
ST Notification of lapse