CA1290018C - Magnetic print hammer actuator protection circuit - Google Patents

Magnetic print hammer actuator protection circuit

Info

Publication number
CA1290018C
CA1290018C CA000569714A CA569714A CA1290018C CA 1290018 C CA1290018 C CA 1290018C CA 000569714 A CA000569714 A CA 000569714A CA 569714 A CA569714 A CA 569714A CA 1290018 C CA1290018 C CA 1290018C
Authority
CA
Canada
Prior art keywords
coupled
hammer
drive
common
transistor
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 - Lifetime
Application number
CA000569714A
Other languages
English (en)
French (fr)
Inventor
David C. Condon
David M. Stumfall
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.)
Individual
Original Assignee
Printronix LLC
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 Printronix LLC filed Critical Printronix LLC
Application granted granted Critical
Publication of CA1290018C publication Critical patent/CA1290018C/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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/26—Testing of individual semiconductor devices
    • G01R31/2607—Circuits therefor
    • G01R31/2608—Circuits therefor for testing bipolar transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
CA000569714A 1987-07-01 1988-06-17 Magnetic print hammer actuator protection circuit Expired - Lifetime CA1290018C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US068,345 1987-07-01
US07/068,345 US4875409A (en) 1987-07-01 1987-07-01 Magnetic print hammer actuator protection circuit

Publications (1)

Publication Number Publication Date
CA1290018C true CA1290018C (en) 1991-10-01

Family

ID=22081963

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000569714A Expired - Lifetime CA1290018C (en) 1987-07-01 1988-06-17 Magnetic print hammer actuator protection circuit

Country Status (6)

Country Link
US (1) US4875409A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP2683526B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1290018C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3822339A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2619528B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2206754B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01169159A (ja) * 1987-12-25 1989-07-04 Aisin Aw Co Ltd 自動変速機の電子制御装置
JPH02243373A (ja) * 1989-03-17 1990-09-27 Hitachi Ltd 印刷位置ずれ補正方法及び該方法を実施する印刷装置
JPH04286657A (ja) * 1991-03-18 1992-10-12 Fujitsu Ltd 圧電素子の異常検出回路
US5329415A (en) * 1991-04-26 1994-07-12 Aida Engineering Ltd. Clutch-brake drive control for press machine
JPH05238020A (ja) * 1992-03-02 1993-09-17 Pfu Ltd 印字ヘッドピンのエラー検出表示方法
EP0732213B1 (en) * 1995-03-15 2002-02-06 Printronix, Inc. Improved printer
TWI220079B (en) * 2003-07-29 2004-08-01 Macronix Int Co Ltd Adjustable frequency AC drive control circuit
US7230812B2 (en) * 2003-11-21 2007-06-12 Agere Systems Inc Predictive applications for devices with thin dielectric regions
GB0700582D0 (en) 2007-01-12 2007-02-21 Domino Printing Sciences Plc Improvements in or relating to continuous inkjet printers
US8649150B2 (en) * 2010-11-01 2014-02-11 Videojet Technologies Inc. Solenoid protection circuit
JP6690368B2 (ja) * 2016-03-31 2020-04-28 ブラザー工業株式会社 制御回路、インクジェットヘッドシステム及び制御方法
CN110244210B (zh) * 2019-07-04 2021-10-15 福州丹诺西诚电子科技有限公司 一种用于igbt单元的击穿检测方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941051A (en) * 1974-08-08 1976-03-02 Printronix, Inc. Printer system
DE2515124B1 (de) * 1975-04-07 1976-09-23 Mannesmann Ag Schaltung zur Ansteuerung der Nadelmagnete eines Nadeldruckers
US4405922A (en) * 1979-05-23 1983-09-20 Hitachi Koki Company, Limited Failure detection circuit for impact printers or the like
US4317412A (en) * 1980-06-25 1982-03-02 International Business Machines Corporation Control system and method for testing print hammers in a high speed printer
DE3124724C2 (de) * 1980-08-11 1984-08-30 VEB Wissenschaftlich-Technisches Zentrum Automobilbau Karl-Marx-Stadt, DDR 9000 Karl-Marx-Stadt Schaltungsanordnung zum Außerbetriebsetzen von elektromagnetischen Einspritzdüsen bei elektronisch gesteuerten Kraftstoff-Einspritzanlagen für Brennkraftmaschinen
JPS6037798B2 (ja) * 1980-12-25 1985-08-28 富士通株式会社 印字用マグネット・コイルの断線検出方法
US4454503A (en) * 1981-09-03 1984-06-12 General Electric Company Transistor fault indicator
JPS5853771A (ja) * 1981-09-25 1983-03-30 Fujitsu Ltd フアイヤチエツク回路
DE3151242C2 (de) * 1981-12-21 1985-05-02 Mannesmann AG, 4000 Düsseldorf Treiberschaltung für Drucker, insbesondere für Matrixdrucker der Nadel- bzw. Hammerbauart
JPS58134774A (ja) * 1982-02-05 1983-08-11 Usac Electronics Ind Co Ltd ヘッド系異常検出機能を有するプリンタ装置
JPS59109381A (ja) * 1982-12-14 1984-06-25 Citizen Watch Co Ltd インパクトプリンタの異常検出回路
US4511947A (en) * 1983-01-05 1985-04-16 Towmotor Corporation Coil and coil driver control apparatus
DE3304360A1 (de) * 1983-02-09 1984-08-16 H. Stoll Gmbh & Co, 7410 Reutlingen Elektromagnetisch gesteuerte flachstrickmaschine
US4538106A (en) * 1983-06-13 1985-08-27 Ford Motor Company Output transistor driver diagnostic system
JPS6092870A (ja) * 1983-10-27 1985-05-24 Tokyo Electric Co Ltd サーマルヘッドの発熱体異常検出回路
DE3346435A1 (de) * 1983-12-22 1985-08-14 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zum ein- und ausschalten sowie zum ueberwachen elektrischer verbraucher
US4487121A (en) * 1984-01-30 1984-12-11 International Business Machines Corporation Fault protection system for a line printer
JPS612570A (ja) * 1984-05-21 1986-01-08 Fujitsu Ltd 印字ヘツドドライバ異常検知回路
JPS612571A (ja) * 1984-06-15 1986-01-08 Brother Ind Ltd ドットプリンタにおける印字ワイヤ−駆動回路
US4706561A (en) * 1984-10-25 1987-11-17 Genicom Corporation Printing activator test circuit generating back EMF
US4589401A (en) * 1985-04-12 1986-05-20 Motorola, Inc. Injector driver fault detect and protection device
US4674897A (en) * 1985-08-26 1987-06-23 Dataproducts, Inc. Actuator for dot matrix printhead
JPH0723000B2 (ja) * 1985-12-20 1995-03-15 日本電気株式会社 ドットプリンタ

Also Published As

Publication number Publication date
JP2683526B2 (ja) 1997-12-03
GB2206754B (en) 1992-03-04
GB8815601D0 (en) 1988-08-03
FR2619528A1 (fr) 1989-02-24
JPS6422561A (en) 1989-01-25
GB2206754A (en) 1989-01-11
DE3822339A1 (de) 1989-01-12
US4875409A (en) 1989-10-24
DE3822339C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-01-17
FR2619528B1 (fr) 1995-03-24

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