JP2018161788A - 液体吐出ヘッド及び液体吐出装置 - Google Patents
液体吐出ヘッド及び液体吐出装置 Download PDFInfo
- Publication number
- JP2018161788A JP2018161788A JP2017059949A JP2017059949A JP2018161788A JP 2018161788 A JP2018161788 A JP 2018161788A JP 2017059949 A JP2017059949 A JP 2017059949A JP 2017059949 A JP2017059949 A JP 2017059949A JP 2018161788 A JP2018161788 A JP 2018161788A
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- Prior art keywords
- liquid
- liquid discharge
- temperature
- thermistor
- liquid ejection
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- 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
- B41J2/125—Sensors, e.g. deflection sensors
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04541—Specific driving circuit
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/0451—Control methods or devices therefor, e.g. driver circuits, control circuits for detecting failure, e.g. clogging, malfunctioning actuator
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04563—Control methods or devices therefor, e.g. driver circuits, control circuits detecting head temperature; Ink temperature
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
-
- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
-
- 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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/64—Means for preventing incorrect coupling
- H01R13/641—Means for preventing incorrect coupling by indicating incorrect coupling; by indicating correct or full engagement
-
- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14491—Electrical connection
-
- 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
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head
Abstract
Description
IN1の検出電圧=P1・Vref、
IN2の検出電圧=P2・Vref、
P1,P2は分圧比、とすると、
Rth1=(P1/(1−P1))・RL1、Rth2=(P2/(1−P2))・RL2
であり、これらの式により分圧比P1,P2から抵抗値Rth1,Rth2を求める。
図5の(a)のように嵌合状態が正常であれば接続異常は検出されない。
第1サーミスタ27、第2サーミスタ28の各抵抗値Rth1、Rth2から温度T1、T2を求めるには逐次上記対数関数の計算を行っても良いが、事前にRth1、Rth2とT1、T2の関係をテーブルにしてメモリ36に保存しておき検出されたRth1、Rth2に応じてこのテーブルを参照しても良い。Rth1、Rth2とT1、T2の関係のテーブルとする代わりに分圧比P1、P2と温度T1、T2関係を直接テーブルとすることもできる。
本実施形態にかかる液体吐出ヘッド及び液体吐出装置によれば、以下の効果が得られる。すなわち、温度センサとして2つのサーミスタ27、28を2つ設け、ハウジング内の温度と、アクチュエータ23aまたはアクチュエータ23aの下流側の流路の温度を検出することとした。このため、循環型の液体吐出ヘッドにおいて液体を加熱または冷却することで液体の温度変化がある場合にも、駆動ICの正確な温度を検出できる。したがって、駆動ICの過熱を防ぐことができるとともに、液体温度を適性に保つことが可能となる。
Claims (5)
- 液体を吐出する液体吐出部と、
液体吐出部を駆動する駆動回路を搭載した回路基板と、
幅方向に並ぶ複数の配線を有し、前記回路基板を、外部に接続する配線接続体と、
前記幅方向に並ぶ複数の配線のうち幅方向の一端側に接続される第1の温度センサと、
前記幅方向に並ぶ複数の配線のうち幅方向の他端側に接続される第2の温度センサと、を備え、
前記幅方向に並ぶ複数の配線のうち前記一端側と前記他端側を除く中央部に、前記液体吐出ヘッドを駆動する駆動回路に接続される端子が配される、液体吐出ヘッド。 - 前記配線接続体と前記回路基板との接続部に第1のコネクタを有する請求項1記載の液体吐出ヘッド。
- 前記第1の温度センサ及び前記第2の温度センサは、前記液体吐出ヘッドを駆動する駆動回路の電源から独立している、請求項1または2に記載の液体吐出ヘッド。
- 請求項1乃至3のいずれかに記載の液体吐出ヘッドと、
前記液体吐出ヘッドの動作を制御する制御部を備える制御装置と、
前記配線接続体と前記制御装置とを接続する第2のコネクタと、を備える液体吐出装置。 - 前記制御部は、前記液体吐出ヘッドに電源を供給する前に、前記複数の前記温度センサの少なくとも一方により検出した検出値が、所定の許容範囲外である場合に、前記液体吐出ヘッドに電源を供給せず、前記第1の温度センサ及び前記第2の温度センサの検出した検出値が、前記許容範囲内である場合に、前記液体吐出ヘッドを駆動して印字処理を行う、請求項4記載の液体吐出装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017059949A JP6920848B2 (ja) | 2017-03-24 | 2017-03-24 | 液体吐出ヘッド及び液体吐出装置 |
CN201810155093.3A CN108621568B (zh) | 2017-03-24 | 2018-02-23 | 液体喷头以及液体喷出装置 |
US15/928,698 US10513112B2 (en) | 2017-03-24 | 2018-03-22 | Liquid ejecting head and liquid ejecting device |
US16/273,789 US10654263B2 (en) | 2017-03-24 | 2019-02-12 | Liquid ejecting head and liquid ejecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017059949A JP6920848B2 (ja) | 2017-03-24 | 2017-03-24 | 液体吐出ヘッド及び液体吐出装置 |
Publications (2)
Publication Number | Publication Date |
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JP2018161788A true JP2018161788A (ja) | 2018-10-18 |
JP6920848B2 JP6920848B2 (ja) | 2021-08-18 |
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JP2017059949A Active JP6920848B2 (ja) | 2017-03-24 | 2017-03-24 | 液体吐出ヘッド及び液体吐出装置 |
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Country | Link |
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US (2) | US10513112B2 (ja) |
JP (1) | JP6920848B2 (ja) |
CN (1) | CN108621568B (ja) |
Cited By (4)
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JP2019098610A (ja) * | 2017-11-30 | 2019-06-24 | セイコーエプソン株式会社 | 液体吐出装置 |
JP2020082561A (ja) * | 2018-11-28 | 2020-06-04 | コニカミノルタ株式会社 | インクジェット記録装置及びそのプログラム |
JP2020151900A (ja) * | 2019-03-19 | 2020-09-24 | 東芝テック株式会社 | 液体吐出ヘッド及び液体吐出装置 |
JP2020185747A (ja) * | 2019-05-16 | 2020-11-19 | セイコーエプソン株式会社 | プリントヘッド、及び液体吐出装置 |
Families Citing this family (2)
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CN110920256B (zh) * | 2018-09-19 | 2021-01-26 | 精工爱普生株式会社 | 打印头控制电路、打印头以及液体喷出装置 |
JP2022046235A (ja) | 2020-09-10 | 2022-03-23 | 東芝テック株式会社 | 制御ボード |
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2017
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2018
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- 2018-03-22 US US15/928,698 patent/US10513112B2/en active Active
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2019
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US20150239237A1 (en) * | 2012-09-25 | 2015-08-27 | Hewlett-Packard Development Company. L.P. | Print head die with thermal control |
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Also Published As
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US10654263B2 (en) | 2020-05-19 |
CN108621568A (zh) | 2018-10-09 |
CN108621568B (zh) | 2020-07-10 |
US20180272702A1 (en) | 2018-09-27 |
US20190176468A1 (en) | 2019-06-13 |
US10513112B2 (en) | 2019-12-24 |
JP6920848B2 (ja) | 2021-08-18 |
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