EP0395189A3 - Temperature control device for a printhead or a hammerbank with electromagnets - Google Patents

Temperature control device for a printhead or a hammerbank with electromagnets Download PDF

Info

Publication number
EP0395189A3
EP0395189A3 EP19900250075 EP90250075A EP0395189A3 EP 0395189 A3 EP0395189 A3 EP 0395189A3 EP 19900250075 EP19900250075 EP 19900250075 EP 90250075 A EP90250075 A EP 90250075A EP 0395189 A3 EP0395189 A3 EP 0395189A3
Authority
EP
European Patent Office
Prior art keywords
hammerbank
printhead
electromagnets
control device
temperature control
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
EP19900250075
Other languages
German (de)
French (fr)
Other versions
EP0395189A2 (en
EP0395189B1 (en
Inventor
Manfred Grüner
Christian Vogelmann
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0395189A2 publication Critical patent/EP0395189A2/en
Publication of EP0395189A3 publication Critical patent/EP0395189A3/en
Application granted granted Critical
Publication of EP0395189B1 publication Critical patent/EP0395189B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/30—Control circuits for actuators

Abstract

The needle matrix printer has a head (20) that has a large number of needles (1) and activated by a separate electromagnetic stage (3). Each needle actuator receives a drive signal from a drive circuit (21). Coupled to the drive circuit is a temperature monitoring circuit that has a constant current source (25) switched in during a pause period to cause a voltage drop that can be compared with a reference (27). A high or low signal can be latched into a 'D' type stage (30) and if the temperature is two high a cooling fan can be emergised.
EP90250075A 1989-04-27 1990-03-19 Temperature control device for a printhead or a hammerbank with electromagnets Expired - Lifetime EP0395189B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3914217 1989-04-27
DE3914217A DE3914217A1 (en) 1989-04-27 1989-04-27 DEVICE FOR THE TEMPERATURE MONITORING OF A PRINT HEAD OR A HAMMER BANK OF THE ELECTROMAGNET COIL DESIGN

Publications (3)

Publication Number Publication Date
EP0395189A2 EP0395189A2 (en) 1990-10-31
EP0395189A3 true EP0395189A3 (en) 1991-08-21
EP0395189B1 EP0395189B1 (en) 1995-05-31

Family

ID=6379758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90250075A Expired - Lifetime EP0395189B1 (en) 1989-04-27 1990-03-19 Temperature control device for a printhead or a hammerbank with electromagnets

Country Status (5)

Country Link
US (1) US5042375A (en)
EP (1) EP0395189B1 (en)
JP (1) JPH02299857A (en)
AT (1) ATE123256T1 (en)
DE (2) DE3914217A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310271A (en) * 1991-04-30 1994-05-10 Oki Electric Industry Co., Ltd. Solenoid actuator
EP0559161B1 (en) * 1992-03-06 1998-06-10 Seiko Epson Corporation Drive coil overheating protection for wire dot printer
US6141028A (en) * 1992-05-22 2000-10-31 Seiko Epson Corporation Printer and control method therefor
EP0570909B1 (en) * 1992-05-22 1997-08-20 Seiko Epson Corporation Printer and method for controlling it
DE4221261A1 (en) * 1992-06-26 1994-01-05 Mannesmann Ag Method and circuit arrangement for determining the nominal resistance value and the measuring current for the temperature detection of electromagnetic coils, in particular in matrix print heads
JP5582753B2 (en) * 2009-10-05 2014-09-03 キヤノン株式会社 Printer and printing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778293A (en) * 1986-08-01 1988-10-18 Oki Electric Industry Co., Ltd. Dot matrix print head
US4797017A (en) * 1985-09-27 1989-01-10 Kabushiki Kaisha Toshiba Wire dot matrix printer capable of printing letters on a plurality of superposed sheets of paper

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2618224A1 (en) * 1976-04-26 1977-11-03 Siemens Ag ARRANGEMENT FOR EXTENDING THE SERVICE LIFE OF A PRINT HEAD FOR PRINTING AND WRITING DEVICES, IN PARTICULAR FOR MOSAIC PRINTERS
JPS5638277A (en) * 1979-09-06 1981-04-13 Tokyo Electric Co Ltd Driving system for head of dot printer
JPS56117668A (en) * 1980-02-20 1981-09-16 Brother Ind Ltd Drive circuit for impact-type dot printer
JPS56162672A (en) * 1980-05-21 1981-12-14 Usac Electronics Ind Co Ltd Temperature detection system for dot-type head in impact-type dot printer
JPS58116170A (en) * 1981-12-29 1983-07-11 Fujitsu Ltd Printing control system for dot printer
JPS58155964A (en) * 1982-03-12 1983-09-16 Nec Corp Drive circuit for electromagnetic head
JPS58160169A (en) * 1982-03-18 1983-09-22 Shinko Electric Co Ltd Thermal printer
JPS60115477A (en) * 1983-11-29 1985-06-21 Oki Electric Ind Co Ltd Printing head driving system
JPS60134640U (en) * 1984-02-17 1985-09-07 シチズン時計株式会社 Impact printer air cooling fan control device
JPS6158783A (en) * 1984-08-31 1986-03-26 Toshiba Corp Printing apparatus
US4978239A (en) * 1984-10-04 1990-12-18 International Business Machines Corporation Temperature limiting apparatus and method for printer
US4776712A (en) * 1984-10-25 1988-10-11 Tokyo Electric Co., Ltd. Ink-dot printer
JPS6262770A (en) * 1985-09-13 1987-03-19 Fujitsu Ltd Magnet driving device
US4735517A (en) * 1985-10-31 1988-04-05 Texas Instruments Incorporated Printer having flux regulator
JPS62202752A (en) * 1986-03-03 1987-09-07 Fujitsu Ltd Printing control system
JPS62263068A (en) * 1986-05-12 1987-11-16 Nec Corp Impact-type printer
JPS639556A (en) * 1986-07-01 1988-01-16 Hitachi Ltd Printing-controlling system
US4842431A (en) * 1986-10-15 1989-06-27 Brother Kogyo Kabushiki Kaisha Multi-speed cooling fan for printing device
JPS63134256A (en) * 1986-11-26 1988-06-06 Matsushita Electric Works Ltd Printing head driver
JPS63199655A (en) * 1987-02-13 1988-08-18 Fujitsu Ltd Shuttle type wire dot line printer
JPS63260461A (en) * 1987-04-17 1988-10-27 Hitachi Koki Co Ltd Controller for impact printer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797017A (en) * 1985-09-27 1989-01-10 Kabushiki Kaisha Toshiba Wire dot matrix printer capable of printing letters on a plurality of superposed sheets of paper
US4778293A (en) * 1986-08-01 1988-10-18 Oki Electric Industry Co., Ltd. Dot matrix print head

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 258 (M-618)(2705) 21 August 1987, & JP-A-62 62770 (YOSHINO) 19 März 1987, *
RESEARCH DISCLOSURE. no. 266, Juni 1986, HAVANT GB Seite 349 "BIASING OF A SOLENOID ARMATURE THROUGH CONTROL OF COIL CURRENT" *
RESEARCH DISCLOSURE. no. 281, September 1987, HAVANT GB Seite 527 "CONSTANT CURRENT SIGNAL FOR DRIVING A PRINT HEAD COIL USING PREDICTIVE PULSE WIDTH MODULATION" *
RESEARCH DISCLOSURE. no. 283, November 1987, HAVANT GB Seite 642 "INDIVIDUAL PRINT HEAD COIL TEMPERATURE CONTROL SYSTEM" *

Also Published As

Publication number Publication date
DE59009173D1 (en) 1995-07-06
DE3914217A1 (en) 1990-11-15
EP0395189A2 (en) 1990-10-31
US5042375A (en) 1991-08-27
DE3914217C2 (en) 1991-09-26
ATE123256T1 (en) 1995-06-15
JPH02299857A (en) 1990-12-12
EP0395189B1 (en) 1995-05-31

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