JPH0359856U - - Google Patents
Info
- Publication number
- JPH0359856U JPH0359856U JP12098689U JP12098689U JPH0359856U JP H0359856 U JPH0359856 U JP H0359856U JP 12098689 U JP12098689 U JP 12098689U JP 12098689 U JP12098689 U JP 12098689U JP H0359856 U JPH0359856 U JP H0359856U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- comparator
- terminal
- temperature detection
- ground
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Dot-Matrix Printers And Others (AREA)
Description
第１図は本考案の実施例を示すプリンタの印字
ヘツド異常検出報知回路の回路図、第２図はゲー
トの入出力状態図、第２図Ａは印字ヘツドのコネ
クタ抜け時のゲートの入出力状態図、第２図Ｂは
ヘツド温度検出サーミスタの断線時の入出力状態
図、第３図は従来のプランタの印字ヘツド異常検
出報知回路を示す図である。
１，２……コンパレータ、３……ヘツド温度検
出サーミスタ、４，５，６，７……インバータ、
８，９，１０……ゲート、１１……コネクタ抜け
検出用電源。
Fig. 1 is a circuit diagram of a print head abnormality detection and notification circuit of a printer showing an embodiment of the present invention, Fig. 2 is a gate input/output state diagram, and Fig. 2A is a gate input/output when the print head connector is disconnected. FIG. 2B is a state diagram showing the input/output state when the head temperature detection thermistor is disconnected, and FIG. 3 is a diagram showing a print head abnormality detection and notification circuit of a conventional planter. 1, 2... Comparator, 3... Head temperature detection thermistor, 4, 5, 6, 7... Inverter,
8, 9, 10...Gate, 11...Power supply for connector disconnection detection.
Claims (1)
度を検出するヘツド温度検出サーミスタと、 (b) 該ヘツド温度検出サーミスタの電源側の電
圧が（＋）端子に、基準電圧が（−）端子に印加
される第一のコンパレータと、 (c) 上記温度検出サーミスタの電源側の電圧が
（−）端子に、基準電圧が（＋）端子に印加され
る第二のコンパレータと、 (d) 上記ヘツド温度検出サーミスタとアース間
に接続されるコネクタ抜け検出用電源と、 (e) 上記コネクタ抜け検出用電源とアース間、
第一のコンパレータの出力側、第二のコンパレー
タの出力側の各電圧により高温時、コネクタ抜け
時及び断線時の各アラームを識別して出力する手
段を有することを特徴とするプリンタの印字ヘツ
ド異常検出報知回路。[Scope of Claim for Utility Model Registration] (a) A head temperature detection thermistor that is connected between a power supply and ground and detects the temperature of the print head; (b) A voltage on the power supply side of the head temperature detection thermistor is connected to the (+) terminal. , a first comparator to which a reference voltage is applied to its (-) terminal, and (c) a second comparator to which a voltage on the power supply side of the temperature detection thermistor is applied to its (-) terminal and a reference voltage to its (+) terminal. (d) A power supply for detecting disconnection of the connector connected between the head temperature detection thermistor and ground, (e) A power supply for detecting disconnection of the connector connected above and ground,
Print head abnormality of a printer characterized by having means for identifying and outputting alarms at high temperature, connector disconnection, and disconnection based on voltages on the output side of the first comparator and the output side of the second comparator. Detection notification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12098689U JPH0359856U (en) | 1989-10-18 | 1989-10-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12098689U JPH0359856U (en) | 1989-10-18 | 1989-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0359856U true JPH0359856U (en) | 1991-06-12 |
Family
ID=31669034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12098689U Pending JPH0359856U (en) | 1989-10-18 | 1989-10-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0359856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011142957A (en) * | 2010-01-12 | 2011-07-28 | Monberu:Kk | Tightening mechanism |
-
1989
- 1989-10-18 JP JP12098689U patent/JPH0359856U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011142957A (en) * | 2010-01-12 | 2011-07-28 | Monberu:Kk | Tightening mechanism |
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