GB1471378A - Magnetic document encoder - Google Patents

Magnetic document encoder

Info

Publication number
GB1471378A
GB1471378A GB1918774A GB1918774A GB1471378A GB 1471378 A GB1471378 A GB 1471378A GB 1918774 A GB1918774 A GB 1918774A GB 1918774 A GB1918774 A GB 1918774A GB 1471378 A GB1471378 A GB 1471378A
Authority
GB
United Kingdom
Prior art keywords
styli
group
adjacent
web
pole face
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
GB1918774A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1471378A publication Critical patent/GB1471378A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/485—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes
    • B41J2/505—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements
    • B41J2/5056—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements using dot arrays providing selective dot disposition modes, e.g. different dot densities for high speed and high-quality printing, array line selections for multi-pass printing, or dot shifts for character inclination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/43—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for magnetic printing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G06K1/125—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by magnetic means
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Character Input (AREA)
  • Character Discrimination (AREA)
  • Digital Magnetic Recording (AREA)

Abstract

1471378 Selective printing MINNESOTA MINING & MFG CO 1 May 1974 [2 May 1973] 19187/74 Heading B6F An electromagnetic printer includes a drive 54, 56, 58 for advancing a recoding web 52 past a group 14 of electromagnetic styli. Adjacent styli in the group 14 are able to produce adjacent dots on a line perpendicular to feed direction of the web 52. The spacing of adjacent styli is greater than that of the dots they produce. As shown in Fig. 1 each stylus 24-36 of the group 14 is cylindrical, of high permeability, high magnetic moment and low magnetic remanence, and has a pole face adjacent the web 52 which passes through recess 18. The pole face field intensity approaches the saturation magnetization of the pole face spacers 40, 42 and base member 38 provide a portion of the flux return path to the support member 16. As shown spacer 42 may be an electromagnetic coil providing a magnetic bias. Spacer 40 may also be a coil. A second group of styli 12 may be provided to produce coded marks 68, 70, 72 corresponding to the alphamenco 84, 86, 88. Fig. 3 shows how the keyboard output is handled for feeding to the styli. The motor 58 may operate stepwise in increments identical to the staggering of the styli 14.
GB1918774A 1973-05-02 1974-05-01 Magnetic document encoder Expired GB1471378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US356320A US3890623A (en) 1973-05-02 1973-05-02 Magnetic document encoder having multiple staggered styli

Publications (1)

Publication Number Publication Date
GB1471378A true GB1471378A (en) 1977-04-27

Family

ID=23400983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1918774A Expired GB1471378A (en) 1973-05-02 1974-05-01 Magnetic document encoder

Country Status (7)

Country Link
US (1) US3890623A (en)
JP (1) JPS5017139A (en)
CA (1) CA1003482A (en)
DE (1) DE2421468A1 (en)
FR (1) FR2228253B1 (en)
GB (1) GB1471378A (en)
IT (1) IT1011316B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030105A (en) * 1975-09-26 1977-06-14 Xerox Corporation Technique of character generation on magnetic tapes
FR2395148A1 (en) * 1977-06-21 1979-01-19 Cii Honeywell Bull RECORDING CONTROL DEVICE FOR POINT RECORDING MACHINE
JPS54126538A (en) * 1978-03-25 1979-10-01 Ricoh Co Ltd Compensator of time intervals of dots in ink jet printing
US4392755A (en) * 1982-02-10 1983-07-12 Extel Corporation Magnetic dot matrix printing
US4392754A (en) * 1982-02-10 1983-07-12 Extel Corporation Magnetic dot matrix printing method and apparatus
US4525724A (en) * 1982-06-30 1985-06-25 International Business Machines Corporation Magnetic recording head array for longitudinal magnetic printing with staggered head arrangement and clustered wiring
JPS636466A (en) * 1986-06-26 1988-01-12 Sanken Electric Co Ltd Frequency detecting circuit
US4725850A (en) * 1987-03-19 1988-02-16 International Business Machines Corporation Electromagnetic head with separate addressability resolution and imaging resolution functions
US4739342A (en) * 1987-04-30 1988-04-19 International Business Machines Corporation Crossed-element magnetographic print head
DE3819909A1 (en) * 1988-06-11 1989-12-21 Schulte Schlagbaum Ag CODING DEVICE FOR MAGNETIC CARDS
EP0498293B1 (en) * 1991-01-30 1996-10-30 Canon Information Systems Research Australia Pty Ltd. Bubblejet image reproducing apparatus
US6019457A (en) * 1991-01-30 2000-02-01 Canon Information Systems Research Australia Pty Ltd. Ink jet print device and print head or print apparatus using the same
EP0577390B1 (en) * 1992-06-30 2000-05-24 Canon Kabushiki Kaisha An ink jet recording apparatus
KR100374788B1 (en) 2000-04-26 2003-03-04 삼성전자주식회사 Bubble-jet type ink-jet printhead, manufacturing method thereof and ejection method of the ink
KR100397604B1 (en) 2000-07-18 2003-09-13 삼성전자주식회사 Bubble-jet type ink-jet printhead and manufacturing method thereof

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL215946A (en) * 1956-04-03
US2955277A (en) * 1958-06-18 1960-10-04 Ibm Method of and apparatus for recording
NL245725A (en) * 1958-11-24
NL256071A (en) * 1959-09-26
FR1262331A (en) * 1960-07-11 1961-05-26 Ampex Magnetic recording and reproducing device and recording element for this device
US3254626A (en) * 1961-03-21 1966-06-07 Sony Corp High speed letter printing system
BE651590A (en) * 1963-08-08
US3395401A (en) * 1964-03-30 1968-07-30 Silverman Daniel Digital information recording system with simultaneous traverse of recording means and recording medium
US3526708A (en) * 1965-11-09 1970-09-01 Heller William C Jun Magnetic through-field apparatus and process for printing by imbedding particles in a record medium
FR1524328A (en) * 1967-03-30 1968-05-10 Nordon Fruhinsholz Diebold Improvements made to fittings for tubes, in particular plastic, intended more specifically for pressurized pipelines
US3512158A (en) * 1968-05-02 1970-05-12 Bunker Ramo Infra-red printer
US3611419A (en) * 1969-04-02 1971-10-05 Clevite Corp Electrographic imaging system and heads therefor

Also Published As

Publication number Publication date
IT1011316B (en) 1977-01-20
FR2228253A1 (en) 1974-11-29
FR2228253B1 (en) 1978-12-01
US3890623A (en) 1975-06-17
DE2421468A1 (en) 1974-11-21
JPS5017139A (en) 1975-02-22
CA1003482A (en) 1977-01-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee