EP0028334A3 - Method and apparatus for thermally marking a record medium - Google Patents

Method and apparatus for thermally marking a record medium Download PDF

Info

Publication number
EP0028334A3
EP0028334A3 EP80106260A EP80106260A EP0028334A3 EP 0028334 A3 EP0028334 A3 EP 0028334A3 EP 80106260 A EP80106260 A EP 80106260A EP 80106260 A EP80106260 A EP 80106260A EP 0028334 A3 EP0028334 A3 EP 0028334A3
Authority
EP
European Patent Office
Prior art keywords
layer
electrodes
return conductor
transfer
source
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.)
Withdrawn
Application number
EP80106260A
Other languages
German (de)
French (fr)
Other versions
EP0028334A2 (en
Inventor
Clayton Vance Wilbur
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 EP0028334A2 publication Critical patent/EP0028334A2/en
Publication of EP0028334A3 publication Critical patent/EP0028334A3/en
Withdrawn legal-status Critical Current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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/325—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet

Abstract

The apparatus comprises a thermal print head compris­ ing a row of electrodes 22 embedded in a layer 19 of insulating material sandwiched between two blocks 20, 21 which provides a common return conductor for currents from source 26. Each electrode is individually connectable via switches 25 to the source 26. The transfer ribbon 14 comprises a resistive layer 23 which is electrically contacted by both the electrodes 22 and the return conductor 20 and an inking layer 24 which contacts the record sheet 15. In use the head is moved along the ribbon 14 in the direction of the arrow 28 and the switches 25 selectively actuated to cause thermal transfer of ink from the layer 24 to the record sheet 15. The transfer is caused by heat generated in the layer 23 when local currents are established herein between the electrodes 22 and the return conductor 20.
EP80106260A 1979-11-01 1980-10-15 Method and apparatus for thermally marking a record medium Withdrawn EP0028334A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9083179A 1979-11-01 1979-11-01
US90831 1993-07-12

Publications (2)

Publication Number Publication Date
EP0028334A2 EP0028334A2 (en) 1981-05-13
EP0028334A3 true EP0028334A3 (en) 1982-12-29

Family

ID=22224529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106260A Withdrawn EP0028334A3 (en) 1979-11-01 1980-10-15 Method and apparatus for thermally marking a record medium

Country Status (1)

Country Link
EP (1) EP0028334A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345845A (en) * 1981-06-19 1982-08-24 International Business Machines Corporation Drive circuit for thermal printer
JPS57208269A (en) * 1981-06-19 1982-12-21 Ricoh Co Ltd Recorder
CA1181987A (en) * 1981-06-22 1985-02-05 Walter Crooks Print head for high resolution electrothermal printing apparatus
DE3237975A1 (en) * 1981-10-13 1983-04-28 Ricoh Co., Ltd., Tokyo Electrothermal multipin recording head
DE3338722A1 (en) * 1982-10-26 1984-05-03 Victor Company Of Japan, Ltd., Yokohama, Kanagawa INK TRANSFER THERMAL PRINTER WITH HIGH RESOLUTION
US4800397A (en) * 1987-10-30 1989-01-24 International Business Machines Corporation Metal transfer to form printing master plate or printed circuit board
JPH03126562A (en) * 1989-10-11 1991-05-29 Ricoh Co Ltd Electrotransfer recorder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744611A (en) * 1970-01-09 1973-07-10 Olivetti & Co Spa Electro-thermic printing device
US3989131A (en) * 1974-02-18 1976-11-02 Ing. C. Olivetti & C., S.P.A. Electrothermal printing unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744611A (en) * 1970-01-09 1973-07-10 Olivetti & Co Spa Electro-thermic printing device
US3989131A (en) * 1974-02-18 1976-11-02 Ing. C. Olivetti & C., S.P.A. Electrothermal printing unit

Also Published As

Publication number Publication date
EP0028334A2 (en) 1981-05-13

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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PUAL Search report despatched

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Effective date: 19830808

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Inventor name: WILBUR, CLAYTON VANCE