GB2001009A - Thermal print bar - Google Patents

Thermal print bar

Info

Publication number
GB2001009A
GB2001009A GB7829877A GB7829877A GB2001009A GB 2001009 A GB2001009 A GB 2001009A GB 7829877 A GB7829877 A GB 7829877A GB 7829877 A GB7829877 A GB 7829877A GB 2001009 A GB2001009 A GB 2001009A
Authority
GB
United Kingdom
Prior art keywords
row
spots
bar
hot spots
paper
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
GB7829877A
Other versions
GB2001009B (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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of GB2001009A publication Critical patent/GB2001009A/en
Application granted granted Critical
Publication of GB2001009B publication Critical patent/GB2001009B/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
    • B41J2/315—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
    • B41J2/345—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 characterised by the arrangement of resistors or conductors

Landscapes

  • Electronic Switches (AREA)

Abstract

A thermal printing bar, as for a facsimile printer, comprises a continuous bar 11 of electrically resistive material on a surface of an electrically insulating substrate 10 and a pattern of associated conductors 13 extending beneath the bar on each side thereof to produce two rows of hot spots in the printing bar. The hot spots in one row are offset relative to the other row. By suitably sizing the hot spots, the spots in one row will at least completely fill the gaps between the spots in the other row, or can even overlap. By this means, the one row is first printed on the paper; the paper moved by the distance between the centres of the rows and then the other row printed. This provides contiguous or overlapping spots on the paper, giving improved contrast. As shown, the hot spots extend between the end 14 of each conductor 13 and a common central conductor 20, as indicated by lines 17. <IMAGE>
GB7829877A 1977-07-14 1978-07-14 Thermal print bar Expired GB2001009B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA282,683A CA1073960A (en) 1977-07-14 1977-07-14 Thermal print bar

Publications (2)

Publication Number Publication Date
GB2001009A true GB2001009A (en) 1979-01-24
GB2001009B GB2001009B (en) 1982-01-27

Family

ID=4109127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829877A Expired GB2001009B (en) 1977-07-14 1978-07-14 Thermal print bar

Country Status (3)

Country Link
JP (1) JPS5421352A (en)
CA (1) CA1073960A (en)
GB (1) GB2001009B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484331A1 (en) * 1980-06-11 1981-12-18 Berkel Patent Nv
EP0142964A2 (en) * 1983-11-12 1985-05-29 Victor Company Of Japan, Limited Apparatus and method for thermal ink transfer printing
EP0150579A1 (en) * 1984-01-27 1985-08-07 Kabushiki Kaisha Toshiba Thermal head
WO1989010264A1 (en) * 1988-04-27 1989-11-02 Eastman Kodak Company Thermal recording apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191077A (en) * 1981-05-22 1982-11-24 Toshiba Corp Thermal head

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484331A1 (en) * 1980-06-11 1981-12-18 Berkel Patent Nv
EP0142964A2 (en) * 1983-11-12 1985-05-29 Victor Company Of Japan, Limited Apparatus and method for thermal ink transfer printing
EP0142964A3 (en) * 1983-11-12 1986-06-18 Victor Company Of Japan, Limited Apparatus and method for thermal ink transfer printing
EP0150579A1 (en) * 1984-01-27 1985-08-07 Kabushiki Kaisha Toshiba Thermal head
US4574292A (en) * 1984-01-27 1986-03-04 Kabushiki Kaisha Toshiba Thermal head
WO1989010264A1 (en) * 1988-04-27 1989-11-02 Eastman Kodak Company Thermal recording apparatus

Also Published As

Publication number Publication date
JPS5421352A (en) 1979-02-17
GB2001009B (en) 1982-01-27
CA1073960A (en) 1980-03-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee