JPS5591081A - Fault detection method for printer printing head - Google Patents
Fault detection method for printer printing headInfo
- Publication number
- JPS5591081A JPS5591081A JP16348078A JP16348078A JPS5591081A JP S5591081 A JPS5591081 A JP S5591081A JP 16348078 A JP16348078 A JP 16348078A JP 16348078 A JP16348078 A JP 16348078A JP S5591081 A JPS5591081 A JP S5591081A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output signal
- printing head
- driver
- head
- 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 secure the early detection for the fault of the printing head by delivering the output of the printing head driver to the two-way data bus and then comparing the output signal with the printer data.
CONSTITUTION: Latch circuit 2 holds the printer data delivered onto data bus 1. The output signal sent from circuit 2 is supplied to head driver 5, and printing head 4 is driven by the pulse of a fixed time duration produced at printing width setting circuit 9. Output 6 of driver 5 is supplied also to level converter circuit 7 to receive the level conversion. The output signal of circuit 7 receives the control by tristate gate 11 which opens/closes the gate via the signal same as the output signal given from circuit 9. Thus the printer data and the output signal from driver 5 are delivered alternately and in pile onto bus 1. The constant comparison is given between these two signals, thus detecting the fault of head 4 in an easy way.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16348078A JPS5591081A (en) | 1978-12-28 | 1978-12-28 | Fault detection method for printer printing head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16348078A JPS5591081A (en) | 1978-12-28 | 1978-12-28 | Fault detection method for printer printing head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5591081A true JPS5591081A (en) | 1980-07-10 |
Family
ID=15774670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16348078A Pending JPS5591081A (en) | 1978-12-28 | 1978-12-28 | Fault detection method for printer printing head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5591081A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58134774A (en) * | 1982-02-05 | 1983-08-11 | Usac Electronics Ind Co Ltd | Abnormality-detecting system for head system in printer |
-
1978
- 1978-12-28 JP JP16348078A patent/JPS5591081A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58134774A (en) * | 1982-02-05 | 1983-08-11 | Usac Electronics Ind Co Ltd | Abnormality-detecting system for head system in printer |
JPH0371274B2 (en) * | 1982-02-05 | 1991-11-12 | Pfu Ltd |
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