JPH0191545U - - Google Patents
Info
- Publication number
- JPH0191545U JPH0191545U JP18603287U JP18603287U JPH0191545U JP H0191545 U JPH0191545 U JP H0191545U JP 18603287 U JP18603287 U JP 18603287U JP 18603287 U JP18603287 U JP 18603287U JP H0191545 U JPH0191545 U JP H0191545U
- Authority
- JP
- Japan
- Prior art keywords
- clogging
- nozzle
- inkjet printer
- liquid pressure
- pump
- 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 7
- 239000007788 liquid Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
第１図は本考案の構成を示すブロツク図、第２
図は連続噴射型のインクジエツトプリンタの構造
例を示す図、第３図はインク供給流路の液圧制御
系の基本構成例を示す図、第４図は本考案に係る
ノズル目詰り検出装置の一例を示す回路図、第５
図は第４図における各部の信号波形を示すタイミ
ングチヤートである。
符号の説明、１，２０……インク供給流路、２
，１３……ノズル、３……液圧検出手段、４，１
５……ポンプ、５……ポンプ駆動制御手段、６…
…目詰り判別手段、４１……デユーテイ検出回路
、４２……デユーテイ比較回路、４３……基準信
号発生回路、４４……異常判別回路、４５……制
御回路、４６……インク循環系制御器、４７……
警報回路。
Figure 1 is a block diagram showing the configuration of the present invention;
The figure shows an example of the structure of a continuous jet inkjet printer, FIG. 3 shows an example of the basic structure of a hydraulic pressure control system for an ink supply channel, and FIG. 4 shows a nozzle clogging detection device according to the present invention. Circuit diagram showing an example of
The figure is a timing chart showing signal waveforms at various parts in FIG. 4. Explanation of symbols, 1, 20... Ink supply channel, 2
, 13... Nozzle, 3... Liquid pressure detection means, 4, 1
5...pump, 5...pump drive control means, 6...
...Clogging determination means, 41...Duty detection circuit, 42...Duty comparison circuit, 43...Reference signal generation circuit, 44...Abnormality determination circuit, 45...Control circuit, 46...Ink circulation system controller, 47...
Alarm circuit.
Claims (1)
での間のインク液圧を検出する液圧検出手段３と
、液圧検出手段３での検出液圧を一定にすべくイ
ンク供給用のポンプ４の駆動制御を行なうポンプ
駆動制御手段５とを有したインクジエツトプリン
タにおける当該ノズル２の目詰り検出装置であつ
て、 ポンプ駆動制御手段５での制御態様に基づいて
ノズル２の目詰り状態を判別する目詰り判別手段
６を備えたことを特徴とするインクジエツトプリ
ンタのノズル目詰り検出装置。 ２ 上記ポンプ駆動制御手段５は、ポンプ４に対
する駆動信号のデユーテイ制御を行なうものとし
、上記目詰り判別手段６は、ポンプ駆動制御手段
５での制御デユーテイ比が所定の基準デユーテイ
比以下となることを判別するものであることを特
徴とする実用新案登録請求の範囲第１項記載のイ
ンクジエツトプリンタのノズル目詰り検出装置。[Claims for Utility Model Registration] 1. A liquid pressure detection means 3 for detecting the ink liquid pressure through the ink supply channel 1 up to the nozzle 2, and a liquid pressure detection means 3 that keeps the detected liquid pressure constant. A device for detecting clogging of a nozzle 2 in an inkjet printer, which has a pump drive control means 5 for controlling the drive of a pump 4 for supplying ink in order to 1. A nozzle clogging detection device for an inkjet printer, comprising a clogging determining means 6 for determining the clogging state of the nozzle 2. 2. The pump drive control means 5 controls the duty of the drive signal for the pump 4, and the clogging determination means 6 determines that the control duty ratio of the pump drive control means 5 is equal to or less than a predetermined reference duty ratio. A nozzle clogging detection device for an inkjet printer according to claim 1, characterized in that the device detects clogging of nozzles in an inkjet printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18603287U JPH0191545U (en) | 1987-12-08 | 1987-12-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18603287U JPH0191545U (en) | 1987-12-08 | 1987-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0191545U true JPH0191545U (en) | 1989-06-15 |
Family
ID=31477284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18603287U Pending JPH0191545U (en) | 1987-12-08 | 1987-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0191545U (en) |
-
1987
- 1987-12-08 JP JP18603287U patent/JPH0191545U/ja active Pending
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