JPH0329338U - - Google Patents
Info
- Publication number
- JPH0329338U JPH0329338U JP7419289U JP7419289U JPH0329338U JP H0329338 U JPH0329338 U JP H0329338U JP 7419289 U JP7419289 U JP 7419289U JP 7419289 U JP7419289 U JP 7419289U JP H0329338 U JPH0329338 U JP H0329338U
- Authority
- JP
- Japan
- Prior art keywords
- ink
- inkjet head
- head
- electrode body
- predetermined value
- 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 4
- 238000007641 inkjet printing Methods 0.000 claims 3
- 230000007423 decrease Effects 0.000 claims 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Description
第１図は本考案の一実施例のインクジエツト・
プリンタの構成を断面図と回路図との組合せによ
つて示す図、第２図は第１図の動作を説明するた
めの部分断面図である。
１０…インクジエツト・ヘツド、１１…噴射口
、１２…インク室、１４…ピエゾ素子、１５…駆
動信号源、２０…電極板、３０…異常検出回路、
３４，３８…比較器、３９…クロツク発生回路、
４０…カウンタ。
Figure 1 shows an inkjet according to an embodiment of the present invention.
FIG. 2 is a partial sectional view for explaining the operation of FIG. 1. DESCRIPTION OF SYMBOLS 10... Inkjet head, 11... Injection port, 12... Ink chamber, 14... Piezo element, 15... Drive signal source, 20... Electrode plate, 30... Abnormality detection circuit,
34, 38... Comparator, 39... Clock generation circuit,
40...Counter.
Claims (1)
ら噴射されるインクがこのインクジエツト・ヘツ
ド内のインクから分離してインク滴が形成される
箇所の手前に設置された電極体と、 このインクジエツト・ヘツドに駆動信号が供給
されたのち上記電極体とインクジエツト・ヘツド
内のインクとの間のインピーダンスが所定値以下
に低下するまでの時間を検出する噴射状態検出回
路とを備えたことを特徴とするインクジエツト・
プリンタ。 (2) インクジエツト・ヘツドと、 このインクジエツト・ヘツドのインク噴射口か
ら噴射されるインクがこのインクジエツト・ヘツ
ド内のインクから分離してインク滴が形成される
箇所の手前に設置された電極体と、 このインクジエツト・ヘツドに駆動信号が供給
されたのち所定時間内に上記電極体とインクジエ
ツト・ヘツド内のインクとの間のインピーダンス
が所定値以下に低下するか否かを検出する噴射状
態検出回路とを備えたことを特徴とするインクジ
エツト・プリンタ。 (3) インクジエツト・ヘツドと、 このインクジエツト・ヘツドのインク噴射口か
ら噴射されるインクがこのインクジエツト・ヘツ
ド内のインクから分離してインク滴が形成される
箇所の手前に設置された電極体と、 このインクジエツト・ヘツドに駆動信号が供給
されたのち上記電極体とインクジエツト・ヘツド
内のインクとの間のインピーダンスが所定値以下
に低下するまでの時間及びこのインクジエツト・
ヘツドに駆動信号が供給されたのち所定時間内に
インピーダンスが所定値以下に低下するか否かを
検出する噴射状態検出回路とを備えたことを特徴
とするインクジエツト・プリンタ。[Scope of Claim for Utility Model Registration] (1) An inkjet head, and before the point where the ink jetted from the ink jetting port of the inkjet head separates from the ink in the inkjet head to form ink droplets. An ejection state that detects the time until the impedance between the electrode body and the ink in the inkjet head falls below a predetermined value after a drive signal is supplied to the inkjet head. An ink jet characterized by being equipped with a detection circuit.
printer. (2) an inkjet head; an electrode body installed in front of a location where ink ejected from the ink jetting port of the inkjet head separates from ink in the inkjet head to form ink droplets; an ejection state detection circuit that detects whether the impedance between the electrode body and the ink in the inkjet head decreases to a predetermined value or less within a predetermined time after a drive signal is supplied to the inkjet head; An inkjet printer characterized by: (3) an inkjet head; an electrode body installed in front of a location where ink ejected from the ink jetting port of the inkjet head separates from ink in the inkjet head to form ink droplets; The time required for the impedance between the electrode body and the ink in the ink jet head to drop below a predetermined value after a drive signal is supplied to the ink jet head, and the time required for this ink jet head to drop to a predetermined value or less.
An inkjet printer comprising: an ejection state detection circuit that detects whether impedance falls below a predetermined value within a predetermined time after a drive signal is supplied to the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7419289U JPH0329338U (en) | 1989-06-23 | 1989-06-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7419289U JPH0329338U (en) | 1989-06-23 | 1989-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0329338U true JPH0329338U (en) | 1991-03-22 |
Family
ID=31613674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7419289U Pending JPH0329338U (en) | 1989-06-23 | 1989-06-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329338U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003055687A1 (en) * | 2001-12-27 | 2003-07-10 | Canon Kabushiki Kaisha | Liquid discharge detection method and apparatus and ink-jet printer apparatus |
| JP2005225193A (en) * | 2004-02-16 | 2005-08-25 | Seiko Epson Corp | Liquid discharge checker and method, liquid discharge equipment, inkjet printer, program and liquid discharge system |
-
1989
- 1989-06-23 JP JP7419289U patent/JPH0329338U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003055687A1 (en) * | 2001-12-27 | 2003-07-10 | Canon Kabushiki Kaisha | Liquid discharge detection method and apparatus and ink-jet printer apparatus |
| KR100756145B1 (en) * | 2001-12-27 | 2007-09-05 | 캐논 가부시끼가이샤 | Liquid discharge detection method and apparatus and ink-jet printer apparatus |
| JP2005225193A (en) * | 2004-02-16 | 2005-08-25 | Seiko Epson Corp | Liquid discharge checker and method, liquid discharge equipment, inkjet printer, program and liquid discharge system |
| JP4513354B2 (en) * | 2004-02-16 | 2010-07-28 | セイコーエプソン株式会社 | Liquid discharge inspection apparatus, liquid discharge inspection method and program |
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