JPS57110474A - Detecting system for omitted letter in printer - Google Patents

Detecting system for omitted letter in printer

Info

Publication number
JPS57110474A
JPS57110474A JP55187924A JP18792480A JPS57110474A JP S57110474 A JPS57110474 A JP S57110474A JP 55187924 A JP55187924 A JP 55187924A JP 18792480 A JP18792480 A JP 18792480A JP S57110474 A JPS57110474 A JP S57110474A
Authority
JP
Japan
Prior art keywords
hammer
detecting
letter
magnet
guide
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
JP55187924A
Other languages
Japanese (ja)
Inventor
Kimimichi Odate
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55187924A priority Critical patent/JPS57110474A/en
Publication of JPS57110474A publication Critical patent/JPS57110474A/en
Pending legal-status Critical Current

Links

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Impact Printers (AREA)

Abstract

PURPOSE: To prevent omitting of a letter due to a poor functioning of a hammer itself, by detecting the operating condition of the hammer.
CONSTITUTION: The number of hammers for only the number of columns for one line is arranged and taps a type 12 through a printing paper 10 and an ink ribbon 11 by flying resulting from excitation of a drive magnet 9 to perform a printing on the printing paper 10. An omitted letter detecting magnet 4, consisting of a permanent magnet, is adhered to the side in the axial direction of the hammer 1 or by embedding in the hammer 1. A detecting coil 6, detecting the movement in a guide 5 of the omitted letter detecting magnet 4 mounted to the hammer 1, is attached to the inner surface of the guide 5 of the hammer 1 or in the wall thickness thereof. As a result, an armature 14 is absorbed resulting from excitation of the drive magnet 9 to strike the hammer 1. Then, the hammer 1 flies in the guide 5 and in its axial direction, and the omitted letter detecting magnet 4 moves in the proximity of the detecting coil 9 to generate an electromotive force in the detecting coil by means of electromagnetic induction.
COPYRIGHT: (C)1982,JPO&Japio
JP55187924A 1980-12-29 1980-12-29 Detecting system for omitted letter in printer Pending JPS57110474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55187924A JPS57110474A (en) 1980-12-29 1980-12-29 Detecting system for omitted letter in printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55187924A JPS57110474A (en) 1980-12-29 1980-12-29 Detecting system for omitted letter in printer

Publications (1)

Publication Number Publication Date
JPS57110474A true JPS57110474A (en) 1982-07-09

Family

ID=16214582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55187924A Pending JPS57110474A (en) 1980-12-29 1980-12-29 Detecting system for omitted letter in printer

Country Status (1)

Country Link
JP (1) JPS57110474A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010105288A (en) * 2008-10-30 2010-05-13 Fujitsu Frontech Ltd Device and method for detecting printhead, and printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010105288A (en) * 2008-10-30 2010-05-13 Fujitsu Frontech Ltd Device and method for detecting printhead, and printer

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