JPS5688148A - Operation checking method of recorder - Google Patents
Operation checking method of recorderInfo
- Publication number
- JPS5688148A JPS5688148A JP16554979A JP16554979A JPS5688148A JP S5688148 A JPS5688148 A JP S5688148A JP 16554979 A JP16554979 A JP 16554979A JP 16554979 A JP16554979 A JP 16554979A JP S5688148 A JPS5688148 A JP S5688148A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- voltage
- detecting
- input signals
- 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
Abstract
PURPOSE:To discover the abnormality of a driver circuit before recording by transmitting a detection signal to the driver circuit of a recording head and detecting the change in the current flowing in this driver circuit and the voltage change thereof. CONSTITUTION:The output signal of a voltage detecting circuit 5 detecting the voltage across a resistance R and the output signal of an OR circuit 6 inputted with the signals S'1, S'2, S'3 of input signals S1, S2, S3 are inputted to the input side of an AND circuit 4, and the output side of the AND circuit 4 is connected to the set input terminal of an FF circuit 7. If the input signals of respective switching circuits SW1-SW3 are made L while not in recording, the input signals S'1-S'3 of the OR circuit 6 all go to H, and if there is a trouble of ON in any of the switching circuits SW1-SW3, H is outputted from the voltage detecting circuit as well, and the output of the AND circuit 4 goes H, thereby setting the FF7. An LED etc. are then lighted by the output Q of the FF7 and the trouble is thereby displayed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16554979A JPS5688148A (en) | 1979-12-21 | 1979-12-21 | Operation checking method of recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16554979A JPS5688148A (en) | 1979-12-21 | 1979-12-21 | Operation checking method of recorder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5688148A true JPS5688148A (en) | 1981-07-17 |
Family
ID=15814480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16554979A Pending JPS5688148A (en) | 1979-12-21 | 1979-12-21 | Operation checking method of recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5688148A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109381A (en) * | 1982-12-14 | 1984-06-25 | Citizen Watch Co Ltd | Detecting circuit of abnormalities of impact printer |
-
1979
- 1979-12-21 JP JP16554979A patent/JPS5688148A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109381A (en) * | 1982-12-14 | 1984-06-25 | Citizen Watch Co Ltd | Detecting circuit of abnormalities of impact printer |
JPH0424236B2 (en) * | 1982-12-14 | 1992-04-24 | Citizen Watch Co Ltd |
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