JPS57110474A - Detecting system for omitted letter in printer - Google Patents
Detecting system for omitted letter in printerInfo
- 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
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
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)
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 |
-
1980
- 1980-12-29 JP JP55187924A patent/JPS57110474A/en active Pending
Cited By (1)
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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