JPS56139972A - Control circuit for charging electrode for ink jet printer - Google Patents
Control circuit for charging electrode for ink jet printerInfo
- Publication number
- JPS56139972A JPS56139972A JP4195280A JP4195280A JPS56139972A JP S56139972 A JPS56139972 A JP S56139972A JP 4195280 A JP4195280 A JP 4195280A JP 4195280 A JP4195280 A JP 4195280A JP S56139972 A JPS56139972 A JP S56139972A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- output
- charging
- charging electrode
- control circuit
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/07—Ink jet characterised by jet control
- B41J2/075—Ink jet characterised by jet control for many-valued deflection
- B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
Abstract
PURPOSE:To prevent the electrode from being broken by a method wherein at least one of the levels of the output voltage and the output current of the charging electrode is detected to effect the stopping or the like of a charging signal. CONSTITUTION:A detecting circuit, for example, is obtained by adding a circuit AD same as a driving driver A for the charging electrode A1. When the charging electrode A1 connected to the driver is operating normally, the output 5 of a comparator 4 is at L level. On the other hand, when the charging electrode A1 is short-circuited to a neighboring electrode with ink and the voltage of the charging electrode A1 is at H level while the same of the neighboring electrode side is at L level, the output of the driver A is lowered than H level during the normal operation thereof. If the output of the driver A is lower than a reference level, the comparator 4 is operated to output a pulse. This pulse is inputted into the control circuit and the breakage of the electrode may be prevented by controlling the charging output in the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195280A JPS56139972A (en) | 1980-04-02 | 1980-04-02 | Control circuit for charging electrode for ink jet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195280A JPS56139972A (en) | 1980-04-02 | 1980-04-02 | Control circuit for charging electrode for ink jet printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56139972A true JPS56139972A (en) | 1981-10-31 |
Family
ID=12622529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4195280A Pending JPS56139972A (en) | 1980-04-02 | 1980-04-02 | Control circuit for charging electrode for ink jet printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56139972A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597060A (en) * | 1982-06-24 | 1984-01-14 | イーストマン・コダック・カンパニー | Protective circuit for ink jet charge electrode |
| JPS60262662A (en) * | 1984-06-12 | 1985-12-26 | Hitachi Seiko Ltd | Ink jet recorder |
-
1980
- 1980-04-02 JP JP4195280A patent/JPS56139972A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597060A (en) * | 1982-06-24 | 1984-01-14 | イーストマン・コダック・カンパニー | Protective circuit for ink jet charge electrode |
| JPH0363516B2 (en) * | 1982-06-24 | 1991-10-01 | Eastman Kodak Co | |
| JPS60262662A (en) * | 1984-06-12 | 1985-12-26 | Hitachi Seiko Ltd | Ink jet recorder |
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