JPS60230859A - Ink jet recording apparatus - Google Patents

Ink jet recording apparatus

Info

Publication number
JPS60230859A
JPS60230859A JP8810584A JP8810584A JPS60230859A JP S60230859 A JPS60230859 A JP S60230859A JP 8810584 A JP8810584 A JP 8810584A JP 8810584 A JP8810584 A JP 8810584A JP S60230859 A JPS60230859 A JP S60230859A
Authority
JP
Japan
Prior art keywords
ink
temp
code
exciting voltage
correction code
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
Application number
JP8810584A
Other languages
Japanese (ja)
Inventor
Takanao Koike
孝尚 小池
Koichiro Jinnai
陣内 孝一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP8810584A priority Critical patent/JPS60230859A/en
Publication of JPS60230859A publication Critical patent/JPS60230859A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/07Ink jet characterised by jet control
    • B41J2/072Ink jet characterised by jet control by thermal compensation

Abstract

PURPOSE:To always keep the pulverization of ink stable regardless of the change in the temp. of the ink, by detecting the temp. of the ink to covert the same to an exciting voltage correction code and controlling exciting voltage by operating the exciting voltage correction code and an exciting voltage setting code. CONSTITUTION:The pressure correction code corresponding to the digital value of ink temp. is started in PROM3 and, when the temp. code of the ink is indicated to an address, the pressure correction code to said temp. code is outputted always as data. The temp. of the ink is detected on the basis of analogue voltage by a temp. detector 1 and the detection signal is converted to 8-bit data by an A/D converter 2. The coverted data is added to (or subtracted from) the code set by an exciting voltage adjusting switch 4 in an adder 5 and the output therof is added to an exciting voltage control circuit 6 to control exciting voltage Vp.

Description

【発明の詳細な説明】 技術分野 本発明は、インクジェット記録装置、より詳細には、イ
ンクジェット記録装置におけるインク粒子化安定のため
の制御技術に関する。
DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an inkjet recording apparatus, and more particularly, to a control technique for stabilizing ink particle formation in an inkjet recording apparatus.

髪未皮4 インクジェットヘッド内のインクを加圧してノズルより
噴射させるとともに、噴射時、ヘッドを励振してノズル
より噴射されるインクを粒子化し、斯様にして粒子化さ
れたインク滴を記録面に選択的に差し向けてつまり印写
情報信号に応じて記録紙の所定の点に向けて飛翔させて
記録を行なう所謂インクジェット記録装置は周知である
が、従来のインクジェット記録装置は、ヘッドを励振す
る電圧を適正な値に設定することによって、インク粒子
化を安定な状態に保っていた。しかし、ノズルから噴射
されたインクが安定して粒子化される領域は温度によっ
て変化し、そのため、インク温度が変化すると、インク
粒子化の適正領域からはずれてしまい、或いは、マージ
ンが少なくなってしまうという欠点があった。
The ink in the inkjet head is pressurized to be ejected from the nozzle, and at the time of ejection, the head is excited to make the ink ejected from the nozzle into particles, and the ink droplets thus made into particles are transferred to the recording surface. So-called inkjet recording devices that perform recording by selectively directing the head toward a predetermined point on recording paper according to a printing information signal are well known, but conventional inkjet recording devices do not excite the head. By setting the voltage at an appropriate value, the formation of ink particles was maintained in a stable state. However, the area where the ink ejected from the nozzle is stably atomized changes depending on the temperature. Therefore, when the ink temperature changes, the ink atomization deviates from the appropriate area or the margin becomes smaller. There was a drawback.

目 六1 本発明は、上述のごとき実情に鑑みてなされたもので、
インク温度の変化にかかわりなく、常にインク粒子化を
安定状態に保つことのできるインクジェット記録装置を
提供することを目的とじてなされたものである。
Item 61 The present invention was made in view of the above-mentioned circumstances, and
The purpose of this invention is to provide an inkjet recording apparatus that can always keep the formation of ink particles in a stable state regardless of changes in ink temperature.

肩−一一戒。Shoulder - 11 precepts.

本発明の構成について、以下、実施例に基づいて説明す
る。
The configuration of the present invention will be described below based on examples.

第3図は、本発明が適用されたインクジェット記録装置
の一例を示す要部構成図で、図中、11はインクジェッ
トヘッド、12はガター、13はインク回収ポンプ、1
4はインクタンク、15はインク加圧ポンプ、16はア
キュムレータ、17はフィルタで、周知のように、イン
クジェットヘッド11にはインク加圧ポンプ15によっ
て加圧されたインクが供給され、該インクジェットヘッ
ド11のノズルからはインク18が噴出されるが、その
時、該インクジェットヘッド11に励振用電歪素子を駆
動する電圧Vpが印加され、前述のようにしてノズルか
ら噴出されたインク18は励振電圧VPに同期して粒子
化され、インク滴19となって飛翔される。斯様にして
粒子化されたインク滴は図示しない周知の荷電偏向装置
において印写情報信号に応じて荷電制御され、印写イン
ク滴は図示しない記録紙に向けて飛翔されて印写に利用
され、一方、印写に供されないインク滴は直進してガタ
ー12により捕獲され、インクタンク14に回収されて
再使用される。上述のごときインクジェット記録装置に
おいては、インクの粒子化を安定して行う必要があり、
そのため、従来技術においては、ヘッドに印加する励振
電圧Vpを適当な値に設定するようにしていたが、その
場合、前述のように、インク温度が変化すると、インク
粒子化の適正領域がずれてしまい、安定した粒子化がで
きなく欠点があった。第3図において、1は上述のごと
き従来技術の欠点を解決するために設けられたインク温
度検出器、2はA/Dコンバータで、本発明においては
、インク温度検出器1によってインク温度を検出し、そ
の検出信号に応じて励振電圧を制御するようにし、もっ
て、インク粒子化の安定化を図ったものである。なお、
インク温度検出器1は図示位置に限定されるものではな
く、例えば、インクジェットへラド11に設けてもよい
ことは容易に理解できよう。
FIG. 3 is a main part configuration diagram showing an example of an inkjet recording apparatus to which the present invention is applied, in which 11 is an inkjet head, 12 is a gutter, 13 is an ink recovery pump, 1
4 is an ink tank, 15 is an ink pressure pump, 16 is an accumulator, and 17 is a filter.As is well known, ink pressurized by the ink pressure pump 15 is supplied to the inkjet head 11. The ink 18 is ejected from the nozzle. At that time, a voltage Vp for driving the excitation electrostrictive element is applied to the inkjet head 11, and the ink 18 ejected from the nozzle as described above is applied to the excitation voltage VP. The ink is synchronously turned into particles and is flown as ink droplets 19. The charge of the ink droplets thus formed into particles is controlled in accordance with a printing information signal in a well-known charge deflection device (not shown), and the printing ink droplets are flown toward recording paper (not shown) and used for printing. On the other hand, ink droplets that are not used for printing travel straight and are captured by the gutter 12, collected in the ink tank 14, and reused. In the above-mentioned inkjet recording device, it is necessary to stably form ink into particles.
Therefore, in the conventional technology, the excitation voltage Vp applied to the head is set to an appropriate value, but in this case, as described above, when the ink temperature changes, the appropriate region for forming ink particles shifts. This had the disadvantage that stable particle formation could not be achieved. In FIG. 3, 1 is an ink temperature detector provided to solve the above-mentioned drawbacks of the prior art, and 2 is an A/D converter. In the present invention, the ink temperature is detected by the ink temperature detector 1. However, the excitation voltage is controlled according to the detection signal, thereby stabilizing the formation of ink particles. In addition,
It will be easily understood that the ink temperature sensor 1 is not limited to the illustrated position, and may be provided on the inkjet radar 11, for example.

第1図は、上述のごとくして検出されたインク温度検出
信号によって励振電圧を制御する電気回路の一例を示す
ブロック線図、第2図は、詳細図で、図中、■はインク
温度検出器、2はA/D:]ンバータ、3はPROM、
4は励振電圧調整用スイッチ、5は加算器、6は励振電
圧調整回路で、PROM3には、インク温度のデジタル
値に対応する圧力補正コードが格納されており、アドレ
スにインク温度のコードが指定されると、常に、それに
対する圧力補正コードがデータとして出力される。温度
検出器1からはアナログ電圧レベルでインク温度が検出
され、その検出信号はA/Dコンバータ2によって8ビ
ツトのデータに変換される。変換されたデータは、加算
器5において、励振電圧調整用スイッチ4で設定された
コードと加算(又は減算)され、その出力が励振電圧制
御回路6に加えられて励振電圧VPが制御される。
Fig. 1 is a block diagram showing an example of an electric circuit that controls the excitation voltage based on the ink temperature detection signal detected as described above, and Fig. 2 is a detailed diagram, where ■ indicates ink temperature detection. 2 is A/D converter, 3 is PROM,
4 is an excitation voltage adjustment switch, 5 is an adder, and 6 is an excitation voltage adjustment circuit. PROM 3 stores a pressure correction code corresponding to the digital value of ink temperature, and the ink temperature code is specified at the address. Whenever a pressure correction code is output as data. The temperature detector 1 detects the ink temperature at an analog voltage level, and the detection signal is converted into 8-bit data by the A/D converter 2. The converted data is added (or subtracted) to the code set by the excitation voltage adjustment switch 4 in the adder 5, and the output thereof is applied to the excitation voltage control circuit 6 to control the excitation voltage VP.

仇−一来 以上の説明から明らかなように、本発明によると、 (1)、インク温度に応じて励振電圧を制御するように
したので、インク温度が変化しても粒子化状態を一定に
保つことができる。
As is clear from the above explanation, according to the present invention, (1) the excitation voltage is controlled according to the ink temperature, so the state of atomization can be kept constant even if the ink temperature changes. can be kept.

(2)、ノズルのバラツキを補償するために個々のヘッ
ドの励振電圧を所定の値に設定しても、粒子化特性に応
じて励振電圧を制御可能な手段を提供することができる
(2) Even if the excitation voltage of each head is set to a predetermined value in order to compensate for variations in nozzles, it is possible to provide means that can control the excitation voltage according to the particle formation characteristics.

等の利点があった。There were other advantages.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明の一実施例を説明するための電気的ブ
ロック線図、第2図は、詳細電気回路図、第3図は、本
発明が適用されたインクジェット記録装置の要部構成図
である。 ■・・・インク温度検出器、2・・・A/Dコンバータ
、3・・・PROM、4・・・励振電圧調整用スイッチ
、5・・・加算器、6・・・励振電圧制御回路、11・
・インクジェットヘッド。
FIG. 1 is an electrical block diagram for explaining one embodiment of the present invention, FIG. 2 is a detailed electrical circuit diagram, and FIG. 3 is a main part configuration of an inkjet recording apparatus to which the present invention is applied. It is a diagram. ■... Ink temperature detector, 2... A/D converter, 3... PROM, 4... Excitation voltage adjustment switch, 5... Adder, 6... Excitation voltage control circuit, 11・
・Inkjet head.

Claims (1)

【特許請求の範囲】[Claims] インクを加圧して、ノズルより噴出する手段と、インク
がノズルより噴射す、るときにヘッドに励振を加えてイ
ンクを粒子化する手段と、粒子化したインク滴を記録面
に選択的に差し向ける手段とを有するインクジェット記
録装置において、インク温度を検出する手段と、その検
出値を励振電圧補正コードに変換する手段と、前記励振
電圧補正コードと励振電圧設定コードを演算する手段と
、その演算結果より前記励振電圧を制御する手段とを有
することを特徴とするインクジェット記録装置。
A means for pressurizing the ink and ejecting it from a nozzle, a means for applying excitation to the head to make the ink into particles when the ink is ejected from the nozzle, and a means for selectively inserting the atomized ink droplets onto the recording surface. an inkjet recording apparatus comprising: a means for detecting ink temperature; a means for converting the detected value into an excitation voltage correction code; a means for calculating the excitation voltage correction code and an excitation voltage setting code; An inkjet recording apparatus comprising means for controlling the excitation voltage based on the result.
JP8810584A 1984-05-01 1984-05-01 Ink jet recording apparatus Pending JPS60230859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8810584A JPS60230859A (en) 1984-05-01 1984-05-01 Ink jet recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8810584A JPS60230859A (en) 1984-05-01 1984-05-01 Ink jet recording apparatus

Publications (1)

Publication Number Publication Date
JPS60230859A true JPS60230859A (en) 1985-11-16

Family

ID=13933588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8810584A Pending JPS60230859A (en) 1984-05-01 1984-05-01 Ink jet recording apparatus

Country Status (1)

Country Link
JP (1) JPS60230859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5745132A (en) * 1991-08-01 1998-04-28 Canon Kabushiki Kaisha Ink jet recording apparatus having temperature control function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5745132A (en) * 1991-08-01 1998-04-28 Canon Kabushiki Kaisha Ink jet recording apparatus having temperature control function
US5751304A (en) * 1991-08-01 1998-05-12 Canon Kabushiki Kaisha Ink jet recording having temperature control function
US6116709A (en) * 1991-08-01 2000-09-12 Canon Kabushiki Kaisha Ink jet recording apparatus with temperature calculation based on prestored temperature data
US6139125A (en) * 1991-08-01 2000-10-31 Canon Kabushiki Kaisha Ink jet recording apparatus having temperature control function
US6193344B1 (en) 1991-08-01 2001-02-27 Canon Kabushiki Kaisha Ink jet recording apparatus having temperature control function

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