GB820931A - Magnetic printing method and apparatus - Google Patents

Magnetic printing method and apparatus

Info

Publication number
GB820931A
GB820931A GB3600255A GB3600255A GB820931A GB 820931 A GB820931 A GB 820931A GB 3600255 A GB3600255 A GB 3600255A GB 3600255 A GB3600255 A GB 3600255A GB 820931 A GB820931 A GB 820931A
Authority
GB
United Kingdom
Prior art keywords
ink
card
drum
printing
record
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
GB3600255A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB820931A publication Critical patent/GB820931A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/855—Coating only part of a support with a magnetic layer
    • 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
    • G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
    • 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
    • G03G9/083—Magnetic toner particles
    • G03G9/0831—Chemical composition of the magnetic components
    • G03G9/0832—Metals
    • 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
    • G03G9/083—Magnetic toner particles
    • G03G9/0837—Structural characteristics of the magnetic components, e.g. shape, crystallographic structure
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/14—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by electrographic printing, e.g. xerography; by magnetographic printing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
  • Paints Or Removers (AREA)

Abstract

820,931. Selective printing. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 15, 1955 [Dec. 20, 1954], No.36002/55. Classes 100(2) and 100(4) Magnetic printing. In printing information on a recording surface that can be read optically or magnetically employing as ink a magnetizable composition comprising finely divided iron the particles of which are coated with a plastic composition containing polyvinyl methyl ether a drum 6 is selectively magnetized by a writing head 7 so that when the drum rotates past the ink supply 8 particles of ink 2, 3, 4 adhere to the magnetized parts as shown in Fig. 4. Excess ink is removed by a vacuum device 9 and the coated drum is then pressed against the record surface fed between the drum 6 and pressure roll 11 so that parts of the ink are transferred to the record card 14 as shown in Fig. 4. The residual ink adhering to the drum is removed by a cleaner 12 and the magnetization removed by an eraser head 13 so that the process may be made continuous. Transfer papers, puniched cards. The marks on the record card can be transferred to a magnetic tape or card 15, Fig. 4; from the card 14 by means of a magnet 16 and. the marking can be read by a conventional pick-up head as shown in Fig. 5. Fig. 9 shows a record card similar to a punched card but instead of having punched holes the visual information of the card can be sensed by code marking underlining the ordinary printed data these markings being shown in enlarged form on Figs. 10. The printing ink composition forms the subject-matter of Specification 820,932 [Group
GB3600255A 1954-12-20 1955-12-15 Magnetic printing method and apparatus Expired GB820931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47653454A 1954-12-20 1954-12-20

Publications (1)

Publication Number Publication Date
GB820931A true GB820931A (en) 1959-09-30

Family

ID=37148497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3600255A Expired GB820931A (en) 1954-12-20 1955-12-15 Magnetic printing method and apparatus

Country Status (4)

Country Link
DE (1) DE1039073B (en)
FR (1) FR1160644A (en)
GB (1) GB820931A (en)
NL (1) NL202923A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1219046B (en) * 1959-05-28 1966-06-16 Ibm Key-operated printing device, in particular as a line typewriter
US4315052A (en) * 1979-06-26 1982-02-09 Victor Company Of Japan, Limited Magnetic recording medium
US4477520A (en) * 1979-12-24 1984-10-16 Fujitsu Limited Magnetic recording media having lubricated contact layer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1144743B (en) * 1958-12-30 1963-03-07 Ibm Printing ink with magnetic dye particles
DE2559018C2 (en) * 1975-12-29 1983-08-25 Elfotec AG, 8126 Zumikon Process for producing a magnetic one-component toner
NL7707547A (en) * 1977-07-07 1979-01-09 Oce Van Der Grinten Nv METHOD FOR MAGNETIC TRANSFER OF A POWDER IMAGE.
EP0055992B1 (en) * 1978-03-28 1985-12-18 E.I. Du Pont De Nemours And Company Composition for a toner of a magnetic resist printing process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744031A (en) * 1949-10-15 1956-05-01 Ncr Co Sheet having a transferable coating containing magnetizable material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1219046B (en) * 1959-05-28 1966-06-16 Ibm Key-operated printing device, in particular as a line typewriter
US4315052A (en) * 1979-06-26 1982-02-09 Victor Company Of Japan, Limited Magnetic recording medium
US4477520A (en) * 1979-12-24 1984-10-16 Fujitsu Limited Magnetic recording media having lubricated contact layer

Also Published As

Publication number Publication date
NL202923A (en)
DE1039073C2 (en) 1959-03-12
FR1160644A (en) 1958-07-22
DE1039073B (en) 1958-09-18

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