JPS58201661A - Ink jet recorder - Google Patents

Ink jet recorder

Info

Publication number
JPS58201661A
JPS58201661A JP8404782A JP8404782A JPS58201661A JP S58201661 A JPS58201661 A JP S58201661A JP 8404782 A JP8404782 A JP 8404782A JP 8404782 A JP8404782 A JP 8404782A JP S58201661 A JPS58201661 A JP S58201661A
Authority
JP
Japan
Prior art keywords
ink
viscosity
pressure
detected
tank
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
JP8404782A
Other languages
Japanese (ja)
Inventor
Hiromichi Komai
博道 駒井
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 JP8404782A priority Critical patent/JPS58201661A/en
Publication of JPS58201661A publication Critical patent/JPS58201661A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B41J2/195—Ink jet characterised by ink handling for monitoring ink quality

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Ink Jet (AREA)

Abstract

PURPOSE:To obtain the titled recorder provided with an ink viscosity detector capable of operating irrespectively of changes in ambient temperature and free from need to provided any other special detector, wherein pressure detectors are provided in an ink passage on the upstream and downstream of a filter device the temperature of which is controlled. CONSTITUTION:An ink is fed in through the ink passage 2 on the inlet side, the pressure of the ink is detected by the pressure detector 6, and the ink is passed into a slender pipe part between a metallic pipe 1 and a metallic member 4. Minute vibrations are eliminated at this slender pipe part, foreign matter contained in the ink is removed by a filter member 5, the temperature of the ink is maintained to be constant by a heating element 3, and the thus treated ink is fed out to a head through the ink passage 2 and the pressure detector 7 provided on the outlet side. A pressure loss is detected by the difference between the pressures detected by the pressure detectors 6, 7 provided respectively on the inlet side and on the outlet side, and a change in the viscosity is detected in the ink jet recorder using a fixed flow rate type pump.

Description

【発明の詳細な説明】 ク粘度検出装置に関するものである。[Detailed description of the invention] This invention relates to a viscosity detection device.

インクツエットへラドからインクを射出させることによ
って記録紙に所望のプリントを行なうインクツエツト記
録装置において、プリントに使用されずにインクタンク
に回収されるインクは、さまざまな原因で粘度が変化し
てくる。そして、インクの粘度が変化すると、インクの
射出状態が安定せず、良好なプリントが行なわれなくな
る。そ゛こで、インクの粘度を検出し、インクの粘度の
変化に対応して適当な処置を行なうことが必要となる。In an ink jet recording device that performs desired printing on recording paper by ejecting ink from an ink jet, the viscosity of the ink collected in an ink tank without being used for printing changes due to various reasons. When the viscosity of the ink changes, the ink ejection condition becomes unstable and good printing cannot be performed. Therefore, it is necessary to detect the viscosity of the ink and take appropriate measures in response to changes in the viscosity of the ink.

従来、インク粘度検出装置として、インクの粘度の増加
による電気抵抗の変化を検出するものがある。これはイ
ンク中に２つの電極を設置し、この電極に電圧を加えて
電極間に流れる電流を測定するものである。このような
インク粘度検出装置では、インクの抵抗測定のだめの特
別な検出部を必要とし、検出部の温度補償が必要であり
、環境の確度変化に対するヘッドからの流出インク温度
制御のだめの温度制御回路も必要で、構造が複雑になる
。2. Description of the Related Art Conventionally, there is an ink viscosity detection device that detects a change in electrical resistance due to an increase in ink viscosity. In this method, two electrodes are placed in the ink, a voltage is applied to these electrodes, and the current flowing between the electrodes is measured. Such an ink viscosity detection device requires a special detection section for measuring ink resistance, temperature compensation for the detection section, and a temperature control circuit for controlling the temperature of the ink flowing out from the head in response to changes in the accuracy of the environment. is also required, making the structure complex.

まだ、従来のインク粘度検出装置を有するインクツエツ
ト記録装置として、インクの流量変化を検出し、その変
化した流量に対して希釈液を粘度の高くなったインクに
加えるものがある。この装置でのインクの粘度の検出は
、ダミーノズルを設け、これを弁によって定期的に開き
、このダミーノズルの射出の流量の変化によって粘度の
変化を検出している。そして単位時間に流量計に溜まる
インクが設定量以下であると希釈液がインクタンクに導
かれる。以上の装置では、定流量ポンプを使用した時に
、流量に変化がほとんどないだめ、検出が困難になる。There is still an ink jet recording apparatus having a conventional ink viscosity detection device that detects a change in the flow rate of ink and adds a diluent to the ink whose viscosity has increased in response to the changed flow rate. The viscosity of the ink is detected by this device by providing a dummy nozzle, which is periodically opened by a valve, and detecting a change in viscosity based on a change in the ejection flow rate of the dummy nozzle. When the amount of ink accumulated in the flow meter per unit time is less than a set amount, diluent is guided to the ink tank. In the above device, when a constant flow pump is used, there is almost no change in the flow rate, making detection difficult.

また流量測定のだめのパイｄ’スを設け、さらに流量検
出装置を設置しなければならないために、構造が複雑で
大型化する。Further, since a pipe for measuring the flow rate and a flow rate detection device must be installed, the structure becomes complicated and large.

他の従来例として、インクの比重の変化を検出する装置
がある。これは、インクタンク内にインクとの比重差に
よって移動する浮子を設けるとともに、インクの比重の
増加によって移動する浮子を検知する検知装置を備えて
、インクの比重によって粘度を検出し、検出された粘度
に対応して希釈液をインクに混入させる装置である。し
かしこの装置では、浮子の上下の移動速度が遅いため、
インクの粘度変化に対してすばやく反応せず、希釈過度
となシ、インクの粘度を一定なものにできず、また発光
ダイオードの光によって浮子の位置を検出するため、イ
ンクの粘度や浮子の位置によって検出出力が一定せず、
さらに装置の構造も複雑になる等、上記従来例にはさま
ざまな欠点があったＯ 本発明は上記従来例の欠点を解消するために、インクジ
ェット記録装置において、ヘッドの手前に位置する温度
制御機能を有するフィルタ装置の前後のインク流路に圧
力検出器を設け、インクの圧力損失の差を検出し、イン
クの粘度を検知することができるインク粘度検出装置を
具えたことによって、通常使用される温度制御部で粘度
検出が行なわれるために、特別な他の検出装置を付設す
る必要がなく、装置の構成が複雑とならず、環境温度の
変化に左右されないインク粘度検出装置を有するインク
ツエツト記録装置を提供するものである。以下図面によ
シ本発明の詳細な説明する。Another conventional example is a device that detects changes in the specific gravity of ink. This system is equipped with a float that moves based on the difference in specific gravity between the ink and the ink, and a detection device that detects the float that moves based on the increase in the specific gravity of the ink. This is a device that mixes diluent into ink according to its viscosity. However, with this device, the vertical movement speed of the float is slow;
It does not respond quickly to changes in the viscosity of the ink, and if the ink is diluted too much, the viscosity of the ink cannot be kept constant.Also, since the position of the float is detected by the light of the light emitting diode, the viscosity of the ink and the position of the float cannot be maintained. The detection output is not constant due to
Furthermore, the above conventional example has various drawbacks, such as the structure of the device becoming complicated. In order to eliminate the drawbacks of the above conventional example, the present invention provides an inkjet recording device with a temperature control function located in front of the head. A pressure detector is installed in the ink flow path before and after the filter device, which has a Since the viscosity is detected in the temperature control section, there is no need to attach any other special detection device, the structure of the device is not complicated, and the ink zet recording device has an ink viscosity detection device that is not affected by changes in environmental temperature. It provides: The present invention will be explained in detail below with reference to the drawings.

第１図は本発明の一実施例のインク粘度検出装置の断面
図で、１は両側端部にインク流路２が形成された金属パ
イプ、３は金属パイプ１の表面に配設された加熱素子、
４は金属部材で金属・やイブ１の内面との間にフィルタ
部材５が充填さ庇た細管部を形成している。６および７
は金属・ぐイブ１の両側端部のインク流路２０入口側と
出口側にそれぞれ設けられた圧力検出器である。FIG. 1 is a sectional view of an ink viscosity detection device according to an embodiment of the present invention, in which 1 is a metal pipe with ink flow paths 2 formed at both ends thereof, and 3 is a heating device provided on the surface of the metal pipe 1. element,
Reference numeral 4 denotes a metal member, which forms a thin tube portion filled with a filter member 5 between it and the inner surface of the metal tube 1. 6 and 7
are pressure detectors provided at the inlet and outlet sides of the ink flow path 20 at both ends of the metal gib 1, respectively.

第１図において、インクは入口側のインク流路２から入
り、まず入口側の圧力検出器６によって圧力を検出され
、金属・七イア″ｌと金属部材４との間の細管部に流れ
人み、ここでアキュムレータ等で除去不能な微小脈動を
除去される。そして細管部内のフィルタ一部材で異物金
除去されるとともに、金属・ぐイブｌの外側の加熱素子
３によって一定温度に保たれ、圧力損失の環境温度によ
る影響を除去されて、インク流路２で出口側の圧力検出
器によって圧力を検出されてヘッドへと送シ出される。In FIG. 1, ink enters from the ink flow path 2 on the inlet side, the pressure is first detected by the pressure detector 6 on the inlet side, and the ink flows into the thin tube between the metal 7-ear "l" and the metal member 4. Here, unremovable minute pulsations are removed by an accumulator or the like. Foreign gold particles are removed by a filter member inside the thin tube, and the temperature is maintained at a constant temperature by a heating element 3 outside the metal guide. The influence of the environmental temperature on pressure loss is removed, and the pressure is detected by the pressure detector on the exit side of the ink flow path 2 and sent to the head.

また入口側と出口側の圧力検出器の圧力差で圧力損失が
検知され、この圧力損失の変化によって粘度の変化が検
出される。Further, pressure loss is detected by the pressure difference between the pressure detectors on the inlet side and the outlet side, and a change in viscosity is detected based on a change in this pressure loss.

第２図は本発明の一実施例のインク粘度検出装置の回路
図で、人口側圧力検出器６で検出された入口側圧力ＰＩ
Ｎに相当する電圧と、出口側圧力検出器７で検出された
出口側圧力Ｐ　ＯＵＴに相当する電圧は差動増幅器８ａ
に入力され、細管部の前後間の圧力差である圧力損失に
相当する出力電圧■が常時得られる。また初期インクで
の圧力損失に相当する電圧Ｖ。が基準電圧発生装置９ａ
で発生され、ＶとＶ。が差動増幅器８ｂに入力され、任
意時刻での圧力損失と初期インクでの圧力損失との差に
相当する電圧Ｖ−Ｖｏが出力される。そして、基準電圧
発生装置９ｂでインク粘度の上限設定値におけるインク
での圧力損失と初期インクでの圧力損失との差に相当す
る電圧Ｖ　が発生され、■−ｖｏとｖｌが比較器１０で
比較され、比較器１゜のＨｔ　ｇｈとＬｏｗとの出力に
より粘度が増加したか否かが検出される。FIG. 2 is a circuit diagram of an ink viscosity detection device according to an embodiment of the present invention, in which the inlet side pressure PI detected by the artificial side pressure detector 6
The voltage corresponding to N and the voltage corresponding to the outlet side pressure POUT detected by the outlet side pressure detector 7 are connected to the differential amplifier 8a.
The output voltage (■) corresponding to the pressure loss, which is the pressure difference between the front and back of the thin tube section, is always obtained. Also, the voltage V corresponds to the pressure loss in the initial ink. is the reference voltage generator 9a
generated at V and V. is input to the differential amplifier 8b, and a voltage V-Vo corresponding to the difference between the pressure loss at a given time and the pressure loss in the initial ink is output. Then, the reference voltage generator 9b generates a voltage V corresponding to the difference between the pressure loss in the ink at the upper limit set value of the ink viscosity and the pressure loss in the initial ink, and the comparator 10 compares -vo and vl. Then, it is detected whether the viscosity has increased based on the Ht gh and Low outputs of the comparator 1°.

以上の構成において、加熱素子３への通電によシ細管部
のインク、温度が一定に保たれ、温度変化に伴う粘度変
化の影響が除去される。そこで細管部での流量は圧力損
失と粘度を変数とした関数となるが、定流量ポンプであ
るが故に流量はほぼ一定であるので、流量と圧力損失と
粘度の関係式を変形すると、圧力損失と粘度とは比例関
係になる。In the above configuration, the temperature of the ink in the thin tube portion is kept constant by energizing the heating element 3, and the influence of viscosity change due to temperature change is eliminated. Therefore, the flow rate in the thin tube section is a function of pressure loss and viscosity as variables, but since it is a constant flow pump, the flow rate is almost constant, so if we transform the relational expression between flow rate, pressure loss, and viscosity, we can find that the pressure loss and viscosity are in a proportional relationship.

従って粘度の増加により、圧力損失は大きくなるので、
圧力損失の差を検出することによってインク粘度の増加
が検出される。まだ、圧力の値により、インク供給系の
異常な圧力の上昇や低下も検出される。Therefore, as the viscosity increases, the pressure loss increases, so
An increase in ink viscosity is detected by detecting the difference in pressure drop. However, abnormal pressure increases or decreases in the ink supply system can also be detected based on the pressure value.

第３図は本発明によるインク粘度検出装置を用いたイン
クジェット記録装置の概略系統図で、１１はインクタン
ク１２と希釈液タンク１３からそれぞれインクまたは希
釈液が切シ換え弁丁４を介して流入されるサブタンクで
ある。サブタンク１１に満たされたインクはフィルタ１
５を通され、ポンプ１６によってインク流路に圧送され
、アキュムレータ１７でインクの脈動が平滑化される。FIG. 3 is a schematic system diagram of an inkjet recording apparatus using an ink viscosity detection device according to the present invention, in which ink or diluent flows from an ink tank 12 and a diluent tank 13 through a switching valve 4, respectively. It is a sub-tank. The ink filled in the sub-tank 11 is passed through the filter 1
5 and is forced into an ink flow path by a pump 16, and an accumulator 17 smoothes the pulsation of the ink.

そしてフィルター１８を通され、弁１９によってプリン
トが行なわれない時は弁１９の直前でストツプされ、プ
リントが行なわれる時は、弁１９を通シ、フィルター機
能と温度制御機能を有する粘度検出装置２０で、一定温
度に制御され、圧力を検出されてヘッド２１に送られ射
出される。射出され、プリントに用いられなかったイン
クはガター２２に受は止められ、サブタンク１１に回収
され再び循環される。また、インクのヘッド２１側への
圧送が停止される場合には、弁１９とヘッド２１との間
の圧力を急激に大気へ開放するために、弁１９とサブタ
ンク１１との間を開き、迩圧分のインクがサブタンク１
１に回収される。Then, it is passed through a filter 18 and stopped just before the valve 19 when printing is not performed, and is passed through the valve 19 when printing is performed.A viscosity detection device 20 having a filter function and a temperature control function Then, the temperature is controlled to be constant, the pressure is detected, and it is sent to the head 21 and ejected. The ejected ink that is not used for printing is received by the gutter 22, collected in the sub-tank 11, and circulated again. In addition, when the pressure feeding of ink to the head 21 side is stopped, in order to rapidly release the pressure between the valve 19 and the head 21 to the atmosphere, the gap between the valve 19 and the sub-tank 11 is opened, and the pressure between the valve 19 and the head 21 is suddenly released to the atmosphere. Pressure ink is in sub tank 1
1 will be collected.

第３図において、インク粘度検出装置２０によってイン
クの粘度変化が検出され、第２図の比較器１０の出力と
なって表わされる。この比較器１０の出力がＬｏｗの場
合は、切シ換え弁１４は、サブタンク１１とインクタン
ク１２との間が開となシ、サブタンク１１と希釈液タン
ク１３との間が閉となシ、プリントに使用されたインク
消費量に応じてインクタンク１２内のインクがサブタン
ク１１へ流入する。一方、比較器１０の出力”％ｆＨｉ
ｇｈＯ場合は、切シ換え弁１４によってサブタンク１工
とインクタンク１２との間が閉となシ、サブタンク１１
と希釈液タンク１３との間が開となり、希釈液がサブタ
ンク１１内に流入し、インクを希釈する。その後、比較
器１０の出力がＬｏｗになると切シ換え弁１４によって
、再びサブタンク１１とインクタンク１２との間が開と
なシ、サブタンクｌｌと希釈液タンク１３との間が閉と
なり、希釈液の流入が止められ、インクタンク１２内の
インクがサブタンク１１内に補給され、インクの粘度の
制御がなされる。In FIG. 3, a change in ink viscosity is detected by an ink viscosity detection device 20, and is expressed as an output of the comparator 10 in FIG. When the output of this comparator 10 is Low, the switching valve 14 opens between the sub-tank 11 and the ink tank 12 and closes between the sub-tank 11 and the diluent tank 13. Ink in the ink tank 12 flows into the sub tank 11 according to the amount of ink consumed for printing. On the other hand, the output of the comparator 10 “%fHi
In the case of ghO, the switching valve 14 closes the gap between the sub tank 1 and the ink tank 12, and the sub tank 11
The gap between the sub-tank 11 and the diluent tank 13 is opened, and the diluent flows into the sub-tank 11 to dilute the ink. Thereafter, when the output of the comparator 10 becomes Low, the switching valve 14 again opens the space between the sub-tank 11 and the ink tank 12, and closes the space between the sub-tank 11 and the diluent tank 13. The ink in the ink tank 12 is replenished into the sub tank 11, and the viscosity of the ink is controlled.

以上の装置は、インク粘度を検出するだめに、特別な検
出部を付設しだのではないので、インクジェット記録装
置の構造が複雑にならず、小型化も可能である。また、
ヘット°の直前で温度補償と微小脈動の除去と、異物の
除去と、粘度検出が同時に行なわれるので大変効率がよ
く、流出インクの温度や粘度も確実に制御される。なお
、本実施例では希釈液を用いてインク粘度を制御したが
、これは他の制御方法を用いてもよい。Since the above-described apparatus does not include a special detection section for detecting ink viscosity, the structure of the inkjet recording apparatus does not become complicated and miniaturization is possible. Also,
Temperature compensation, removal of minute pulsations, removal of foreign matter, and viscosity detection are performed simultaneously just before the head °, making it extremely efficient and ensuring control of the temperature and viscosity of the outflowing ink. Note that in this embodiment, the ink viscosity was controlled using a diluent, but other control methods may be used.

第４図は本発明の他のインク粘度の制御方法を用いた実
施例の概略系統図で、サブタンク１１はインクタンク１
２と連通管になっていて、プリントに使用され消費され
たインクをインクタンク１２カラサブタンク１１に補給
する。またサブタンク１１には回収タンク２３が弁２４
を介して接続されている。インクは前述の第３図の実施
例のようにサブタンク１１からフィルタ１５．インク１
６゜アキュムレータ１７．フィルタ１８．弁１９．粘度
検出装置２０を通りヘッド２１で射出される。FIG. 4 is a schematic system diagram of an embodiment using another ink viscosity control method of the present invention, in which the sub-tank 11 is the ink tank 1.
The ink tank 12 is a communicating tube with the ink tank 12 and the ink tank 11 is supplied with ink used and consumed for printing. In addition, the sub-tank 11 has a recovery tank 23 and a valve 24.
connected via. The ink is transferred from the sub-tank 11 to the filter 15, as in the embodiment shown in FIG. ink 1
6° accumulator 17. Filter 18. Valve 19. It passes through a viscosity detection device 20 and is ejected by a head 21 .

まだプリントに使用されなかったインクは、ガター２２
で受は止められ、サブタンク１１内に回収され再循環さ
れる。Ink that has not yet been used for printing is placed in the gutter 22.
The receiver is stopped, collected in the sub-tank 11, and recirculated.

本実施例において、粘度増加が粘度検出装置によって検
出されると、サブタ／り１１と回収夕／り２３との間に
設けられた弁２４が開となシ、サブタンク１１内の粘度
増加したインクは、回収タンク２３へ一定時間導か九る
と同時に、インクタンク１２内のインクがサブタンク１
１内に導入される。従って短時間にサブタンク１１内の
インクが交換される。In this embodiment, when an increase in viscosity is detected by the viscosity detection device, the valve 24 provided between the subtank 11 and the recovery tank 23 is opened, and the ink with increased viscosity in the subtank 11 is opened. At the same time as the ink in the ink tank 12 is guided to the recovery tank 23 for a certain period of time, the ink in the ink tank 12 is transferred to the sub tank 1.
1. Therefore, the ink in the sub-tank 11 is replaced in a short time.

以上説明したように本発明は、インクジェット記録装置
に不可欠な加熱素子を有するインク温度制御部と、脈動
除去のだめの細管部と、異物を除去するフィルタ一部と
を一体的に構成し、さらに圧力検出器でのインクの圧力
測定により、インクの蒸発に伴う粘度の経時的増加を確
実に検出し、雑にならない等の効果を有するものである
。As explained above, the present invention integrates an ink temperature control section having a heating element essential to an inkjet recording device, a thin tube section for removing pulsation, and a part of a filter for removing foreign matter, and furthermore, By measuring the pressure of the ink with the detector, the increase in viscosity over time due to ink evaporation can be reliably detected and has the effect of not becoming sloppy.

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

第１図および第２図はそれぞれ本発明のインク粘度検出
装置の断面図および回路図で、第３図および第４図は本
発′明のインクツエツト記録装置の概略系統図である。 １　・金属パイプ、３・・・加熱素子、４・・金属部材
、５・・・フィルタ部材、６，７・・圧力検出器、８・
・・差動増幅器、９・・・基準電圧発生器、１０・・・
比較器、１１・・・サブタンク、工２・・・インクタン
ク、１３・・希釈液タンク、１４・・切シ換え弁、１５
．１８　　・フィルター、１６・・ポンプ、エフ・・・
アキュムレータ、１９．２４・・・弁、２ｏ・・インク
粘度検出装置、２１・・・ヘッド、２２・・・ガター、
２３・・回収タンク。 第１図 第２図 第３図 第４図1 and 2 are a sectional view and a circuit diagram, respectively, of an ink viscosity detecting device according to the present invention, and FIGS. 3 and 4 are schematic diagrams of an ink jet recording apparatus according to the present invention. 1. Metal pipe, 3. Heating element, 4. Metal member, 5. Filter member, 6, 7.. Pressure detector, 8.
...Differential amplifier, 9...Reference voltage generator, 10...
Comparator, 11... Sub tank, Engineering 2... Ink tank, 13... Diluent tank, 14... Switching valve, 15
．． 18 - Filter, 16... Pump, F...
Accumulator, 19.24... Valve, 2o... Ink viscosity detection device, 21... Head, 22... Gutter,
23...Recovery tank. Figure 1 Figure 2 Figure 3 Figure 4

Claims (2)

【特許請求の範囲】[Claims] （１）定流量型ポンプを用いたインクジェット記録装置
において、微小流体間隙を有する細管部と、細管部に充
填されたフィルタ一部材とを、両側端部にそれぞれイン
ク流路を具え且つ表面に加熱素子が配列された金属性の
外箱内に具え、前記両インク流路のそれぞれに圧力検出
器を設け、細管部の前後間の圧力損失によってインク粘
度を検出することを特徴とするインク粘度検出装置を具
えたインクツエツト記録装置。(1) In an inkjet recording device using a constant flow pump, a thin tube section having a microfluidic gap and a filter member filled in the narrow tube section are provided with ink channels at both ends thereof, and the surfaces thereof are heated. Ink viscosity detection, characterized in that the elements are arranged in a metal outer box, a pressure detector is provided in each of the ink flow paths, and the ink viscosity is detected by the pressure loss between the front and back of the thin tube part. An inkjet recording device equipped with a device. （２）前記インク粘度検出装置をヘッドとヘッドへのイ
ンクの圧送を制御する弁手段との間に配置したことを特
徴とするインクツエツト記録装置。(2) An ink jet recording apparatus characterized in that the ink viscosity detection device is disposed between a head and a valve means for controlling pressure feeding of ink to the head.
JP8404782A 1982-05-20 1982-05-20 Ink jet recorder Pending JPS58201661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8404782A JPS58201661A (en) 1982-05-20 1982-05-20 Ink jet recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8404782A JPS58201661A (en) 1982-05-20 1982-05-20 Ink jet recorder

Publications (1)

Publication Number Publication Date
JPS58201661A true JPS58201661A (en) 1983-11-24

Family

ID=13819581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8404782A Pending JPS58201661A (en) 1982-05-20 1982-05-20 Ink jet recorder

Country Status (1)

Country Link
JP (1) JPS58201661A (en)

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