JP2018161787A - 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
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- JP2018161787A JP2018161787A JP2017059948A JP2017059948A JP2018161787A JP 2018161787 A JP2018161787 A JP 2018161787A JP 2017059948 A JP2017059948 A JP 2017059948A JP 2017059948 A JP2017059948 A JP 2017059948A JP 2018161787 A JP2018161787 A JP 2018161787A
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- Prior art keywords
- liquid
- temperature
- liquid discharge
- temperature sensor
- thermistor
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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
-
- 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
-
- 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
-
- 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
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17543—Cartridge presence detection or type identification
- B41J2/17546—Cartridge presence detection or type identification electronically
-
- 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
-
- 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
Landscapes
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
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。
循環ポンプ16はAct6で印字待機状態となって以降、常時作動させる。すなわちインクは常時循環させておく。Act9で温度T2が許容範囲を逸脱した場合であってもAct10を含むループで待機する間、インクが循環することによって温度T2が許容範囲に戻ってくることを期待できる。
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、
前記液体吐出部を駆動する駆動回路または前記駆動回路が設けられる回路基板の温度を検出する第1の温度センサと、
前記液体吐出部の温度または前記液体吐出部に連通する所定の流路における前記液体の温度を検出する第2の温度センサと、を備える液体吐出ヘッド。 - 請求項1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と、
複数の信号線を備え、前記液体吐出ヘッドと前記制御部とを接続する配線接続体と、を備え、
前記制御部は、前記1の温度センサ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は印字動作を休止し、前記1の温度センサにより検出した検出値が所定の許容範囲内である場合には前記第2の温度センサにより検出した検出値に従って前記駆動回路に与える駆動電圧を制御して印字を可能とする
液体吐出装置。 - 前記制御部は、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、所定の正常範囲外である場合に報知処理を行う、請求項2記載の液体吐出装置。
- 前記液体は、前記液体吐出ヘッドと、前記液体吐出ヘッドの外部との間で循環される、請求項2または3に記載の液体吐出装置。
- 前記液体吐出ヘッドを通る循環路を備え、
前記循環路中であって前記液体吐出ヘッドの外部において、前記液体が加熱又は冷却される、請求項2乃至4のいずれか記載の液体吐出装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017059948A JP2018161787A (ja) | 2017-03-24 | 2017-03-24 | 液体吐出ヘッド及び液体吐出装置 |
CN201810195751.1A CN108621565A (zh) | 2017-03-24 | 2018-03-09 | 液体喷头及液体喷出装置 |
US15/933,780 US10500847B2 (en) | 2017-03-24 | 2018-03-23 | Liquid ejecting head and liquid ejecting device |
JP2022065370A JP2022082826A (ja) | 2017-03-24 | 2022-04-11 | 液体吐出装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017059948A JP2018161787A (ja) | 2017-03-24 | 2017-03-24 | 液体吐出ヘッド及び液体吐出装置 |
Related Child Applications (1)
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JP2022065370A Division JP2022082826A (ja) | 2017-03-24 | 2022-04-11 | 液体吐出装置 |
Publications (1)
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JP2018161787A true JP2018161787A (ja) | 2018-10-18 |
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JP2017059948A Pending JP2018161787A (ja) | 2017-03-24 | 2017-03-24 | 液体吐出ヘッド及び液体吐出装置 |
JP2022065370A Pending JP2022082826A (ja) | 2017-03-24 | 2022-04-11 | 液体吐出装置 |
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JP2022065370A Pending JP2022082826A (ja) | 2017-03-24 | 2022-04-11 | 液体吐出装置 |
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US (1) | US10500847B2 (ja) |
JP (2) | JP2018161787A (ja) |
CN (1) | CN108621565A (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6920848B2 (ja) | 2017-03-24 | 2021-08-18 | 東芝テック株式会社 | 液体吐出ヘッド及び液体吐出装置 |
JP7298152B2 (ja) * | 2018-12-27 | 2023-06-27 | セイコーエプソン株式会社 | 液体吐出装置及び液体吐出装置の制御装置 |
JP2022046235A (ja) | 2020-09-10 | 2022-03-23 | 東芝テック株式会社 | 制御ボード |
CN115593110A (zh) * | 2021-07-08 | 2023-01-13 | 精工爱普生株式会社(Jp) | 打印头以及打印头的检查方法 |
JP2023031359A (ja) * | 2021-08-25 | 2023-03-09 | 東芝テック株式会社 | 駆動装置、液体吐出ヘッド |
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2017
- 2017-03-24 JP JP2017059948A patent/JP2018161787A/ja active Pending
-
2018
- 2018-03-09 CN CN201810195751.1A patent/CN108621565A/zh active Pending
- 2018-03-23 US US15/933,780 patent/US10500847B2/en active Active
-
2022
- 2022-04-11 JP JP2022065370A patent/JP2022082826A/ja active Pending
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JPH0351138A (ja) * | 1989-07-19 | 1991-03-05 | Seiko Instr Inc | インクジェットヘッド回路 |
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Also Published As
Publication number | Publication date |
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US10500847B2 (en) | 2019-12-10 |
JP2022082826A (ja) | 2022-06-02 |
US20180272703A1 (en) | 2018-09-27 |
CN108621565A (zh) | 2018-10-09 |
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