JPS5511806A - Method of detecting printout trouble - Google Patents

Method of detecting printout trouble

Info

Publication number
JPS5511806A
JPS5511806A JP8358778A JP8358778A JPS5511806A JP S5511806 A JPS5511806 A JP S5511806A JP 8358778 A JP8358778 A JP 8358778A JP 8358778 A JP8358778 A JP 8358778A JP S5511806 A JPS5511806 A JP S5511806A
Authority
JP
Japan
Prior art keywords
printout
hammer
type
change
current
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.)
Pending
Application number
JP8358778A
Other languages
Japanese (ja)
Inventor
Minoru Isobe
Masaharu Hokari
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP8358778A priority Critical patent/JPS5511806A/en
Publication of JPS5511806A publication Critical patent/JPS5511806A/en
Pending legal-status Critical Current

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  • Impact Printers (AREA)

Abstract

PURPOSE: To detect printout troubles such as missing letters and missing dots simply and securely by providing on a printer, a detecting circuit which detects the change of current flowing through an electromagnet which drives a printout hammer or a printout wire.
CONSTITUTION: The printout hammer 6 of a printer driven by a hammer driving mechanism consisting of a core 10 wound round by a coil 9, a yoke 11, an armature 12, an armature returning spring 13, etc., strikes the type holding part of a flexible spoke 2 and returns to its initial position by the action of a returning spring 17. If the breakage of a type holder, the falling off of a type or the breakage of the printout wire occurs, the printout hammer 6 overstrokes by the thickness of a type, therefore, the returning of the printout hammer to its initial position is delayed by the overstroke length and the change of current through a magnet 14 occurs. By providing a detecting circuit which detects this current change, printout troubles can be detected simply and securely.
COPYRIGHT: (C)1980,JPO&Japio
JP8358778A 1978-07-11 1978-07-11 Method of detecting printout trouble Pending JPS5511806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8358778A JPS5511806A (en) 1978-07-11 1978-07-11 Method of detecting printout trouble

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8358778A JPS5511806A (en) 1978-07-11 1978-07-11 Method of detecting printout trouble

Publications (1)

Publication Number Publication Date
JPS5511806A true JPS5511806A (en) 1980-01-28

Family

ID=13806617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8358778A Pending JPS5511806A (en) 1978-07-11 1978-07-11 Method of detecting printout trouble

Country Status (1)

Country Link
JP (1) JPS5511806A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813548U (en) * 1981-07-20 1983-01-27 株式会社リコー developing device
JP2010105288A (en) * 2008-10-30 2010-05-13 Fujitsu Frontech Ltd Device and method for detecting printhead, and printer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48100023A (en) * 1972-02-24 1973-12-18
JPS5363925A (en) * 1976-11-19 1978-06-07 Hitachi Koki Kk Device for detecting error operation of typewriter
JPS5498823A (en) * 1978-01-20 1979-08-04 Nippon Electric Co Abnormal action detecting system of printing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48100023A (en) * 1972-02-24 1973-12-18
JPS5363925A (en) * 1976-11-19 1978-06-07 Hitachi Koki Kk Device for detecting error operation of typewriter
JPS5498823A (en) * 1978-01-20 1979-08-04 Nippon Electric Co Abnormal action detecting system of printing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813548U (en) * 1981-07-20 1983-01-27 株式会社リコー developing device
JP2010105288A (en) * 2008-10-30 2010-05-13 Fujitsu Frontech Ltd Device and method for detecting printhead, and printer

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