JPS55146777A - Faulty-printing monitoring device for line printer - Google Patents
Faulty-printing monitoring device for line printerInfo
- Publication number
- JPS55146777A JPS55146777A JP5350479A JP5350479A JPS55146777A JP S55146777 A JPS55146777 A JP S55146777A JP 5350479 A JP5350479 A JP 5350479A JP 5350479 A JP5350479 A JP 5350479A JP S55146777 A JPS55146777 A JP S55146777A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- signal
- faulty
- striking
- flight
- 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 obtain the captioned device capable of automatically securing the quality of printing and surely detecting faulty printing by monitoring the flight time of each hammer of a line printer and thus detecting faulty printing such as an omission and shear in printing as well as breaking of hammers.
CONSTITUTION: The striking force detected by a striking-force detecting element 7 is shaped into a striking signal D and the judgement is made in an AND circuit 17 whether it is found within the pulse width of a flight-time allowed fluctuation signal C from a monostable multivibtator 13. When a faulty-striking signal D1 which fails to enter the pulse width of the signal C is given, a flight-time judging signal E is not outputted to a flip-flop circuit 18, a printing-instruction judging signal F does not rise and, being held at a low level, is not outputted to an AND circuit 10, and the coil 19 of the electromagnetic device of the printer is not excited. As a result, an omission, shear in printing or the breaking of a hammer is detected and the continuation of such a faulty printing operation is prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5350479A JPS55146777A (en) | 1979-05-02 | 1979-05-02 | Faulty-printing monitoring device for line printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5350479A JPS55146777A (en) | 1979-05-02 | 1979-05-02 | Faulty-printing monitoring device for line printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55146777A true JPS55146777A (en) | 1980-11-15 |
Family
ID=12944648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5350479A Pending JPS55146777A (en) | 1979-05-02 | 1979-05-02 | Faulty-printing monitoring device for line printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55146777A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63116882A (en) * | 1986-10-31 | 1988-05-21 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | Impact type printer |
-
1979
- 1979-05-02 JP JP5350479A patent/JPS55146777A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63116882A (en) * | 1986-10-31 | 1988-05-21 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | Impact type printer |
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