JP6972192B2 - Auxiliary liquid and inkjet printer equipment - Google Patents

Auxiliary liquid and inkjet printer equipment Download PDF

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JP6972192B2
JP6972192B2 JP2020008845A JP2020008845A JP6972192B2 JP 6972192 B2 JP6972192 B2 JP 6972192B2 JP 2020008845 A JP2020008845 A JP 2020008845A JP 2020008845 A JP2020008845 A JP 2020008845A JP 6972192 B2 JP6972192 B2 JP 6972192B2
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liquid
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inkjet printer
tank
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拓也 音羽
雅彦 荻野
洋 佐々木
崇博 有馬
啓資 永井
博道 武山
勝男 華
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Hitachi Industrial Equipment Systems Co Ltd
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Description

本発明はインクジェットプリンタに使用される補力液及びインクジェットプリンタ装置に関する。 The present invention relates to a compensating liquid used in an inkjet printer and an inkjet printer device.

帯電制御方式インクジェットプリンタではプリンタ装置内のインクの粘度を常時適正値に維持するため補力液を充填したタンクを搭載している。タンク内の補力液が不足するとインク粘度の調整が困難となる。そのため「インク液面の検出方法として、フロートにマグネットを内蔵し、リードスイッチを使ってフロートの位置を検出することで液面を検出する方式」が特許文献１（特開2000-203057号公報）に開示されている。 The charge control type inkjet printer is equipped with a tank filled with a compensating liquid in order to maintain the viscosity of the ink in the printer device at an appropriate value at all times. If the auxiliary liquid in the tank is insufficient, it becomes difficult to adjust the ink viscosity. Therefore, "a method of detecting the liquid level by incorporating a magnet in the float and detecting the position of the float using a reed switch as a method of detecting the liquid level of ink" is Patent Document 1 (Japanese Patent Laid-Open No. 2000-203057). It is disclosed in.

特開2000-203057号公報Japanese Unexamined Patent Publication No. 2000-203057

しかし、上記特許文献の液面検知技術では長期使用によるフロート材とフロート支持材との機械的摩耗、材質劣化等により正しく液面が検知できなくなる恐れがある。本発明の目的は、こうした物理的摩耗、材質劣化による検知誤差を生じない補力液及びインクジェットプリンタ装置を提供することにある。 However, in the liquid level detection technology of the above patent document, there is a possibility that the liquid level cannot be detected correctly due to mechanical wear between the float material and the float support material due to long-term use, deterioration of the material, and the like. An object of the present invention is to provide a compensating liquid and an inkjet printer device that do not cause detection errors due to such physical wear and deterioration of materials.

上記目的を達成するため、本発明は光を照射すると可視光を発する蛍光色材と、溶剤と、を含む補力液であることを特徴とする。 In order to achieve the above object, the present invention is characterized by being a compensating liquid containing a fluorescent coloring material that emits visible light when irradiated with light, and a solvent.

本発明によれば、精度の高い液面検出が可能な補力液及びインクジェットプリンタ装置を提供することが可能となる。 According to the present invention, it is possible to provide a compensating liquid capable of highly accurate liquid level detection and an inkjet printer device.

受光素子に用いることのできる光センサ回路図Optical sensor circuit diagram that can be used for light receiving elements インクジェットプリンタ装置の模式図Schematic diagram of an inkjet printer device 実施例2における補力液タンク内部の模式図Schematic diagram of the inside of the compensating liquid tank in Example 2 インクジェットプリンタ装置内の信号伝達の模式図Schematic diagram of signal transmission in an inkjet printer device 補力液の液面高さおよび受光センサの高さの高低を判断するアルゴリズム図Algorithm diagram for determining the height of the booster liquid and the height of the light receiving sensor 実施例3における補力液タンク内部の模式図Schematic diagram of the inside of the compensating liquid tank in Example 3 実施例4における補力液タンク内部の模式図Schematic diagram of the inside of the compensating liquid tank in Example 4 実施例5における補力液タンク内部の模式図Schematic diagram of the inside of the compensating liquid tank in Example 5 実施例6における受光素子の受光量と補力液液面の相関図Correlation diagram of the light receiving amount of the light receiving element and the compensating liquid level in Example 6 実施例6および7のアルゴリズム図Algorithm diagram of Examples 6 and 7 実施例7における受光素子の受光量と補力液液面の相関図Correlation diagram of the light receiving amount of the light receiving element and the compensating liquid level in Example 7. スルホ基を有するスチルベン系化合物の構造式Structural formula of stilbene compound having sulfo group

「補力液」とはインクジェットプリンタ、とりわけ帯電制御方式インクジェットプリンタにおいて溶媒成分の揮発等により装置内のインク液粘度が上昇した際インク液に加えることで粘度を適正値まで低下させるのに使用される液である。通常、帯電制御方式インクジェットプリンタは装置内のインク液粘度を常時適正値に維持するため補力液を充填した補力液タンクを搭載している。補力液タンク内の補力液が空になるとインク液粘度を適正値に維持することが困難となる。そのため、補力液がタンク内に十分充填されているかモニタリングし、前記タンク内の補力液駅量が少なくなった時点で補力液を補充するよう作業者に通知することが重要となる。 The "enhancing liquid" is used in inkjet printers, especially charge control type inkjet printers, to reduce the viscosity to an appropriate value by adding it to the ink liquid when the viscosity of the ink liquid in the device increases due to volatilization of solvent components. It is a liquid. Usually, the charge control type inkjet printer is equipped with a compensating liquid tank filled with a compensating liquid in order to maintain the ink liquid viscosity in the apparatus at an appropriate value at all times. When the compensating liquid in the compensating liquid tank becomes empty, it becomes difficult to maintain the ink liquid viscosity at an appropriate value. Therefore, it is important to monitor whether the tank is sufficiently filled with the reinforcing liquid and notify the operator to replenish the reinforcing liquid when the amount of the reinforcing liquid station in the tank becomes small.

本願は蛍光色材を含む補力液および発光素子、受光素子を組み込んだ補力液タンクから構成される。本願は発光素子からの照射光で補力液を可視発光させ、受光素子で前記可視光を検知するメカニズムにより、所定の位置におけるタンク中補力液の有無を検知し、それにより液面高さを検出することができる。 The present application comprises a compensating liquid containing a fluorescent coloring material, a light emitting element, and a compensating liquid tank incorporating a light receiving element. In the present application, the compensating liquid is made to emit visible light by the irradiation light from the light emitting element, and the presence or absence of the compensating liquid in the tank at a predetermined position is detected by the mechanism of detecting the visible light by the light receiving element, thereby the liquid level height. Can be detected.

以下、本願の実施形態を説明する。以下に述べる実施形態は本願を具体化した一例に過ぎず、本願の技術的範囲を限定するものではない。
1.補力液の構成材料
補力液は、少なくとも蛍光色材、溶剤を含む。これらを溶解撹拌混合した後、0.25〜10μm孔径のフィルタにて濾過してインクジェットプリンタ用補力液が得られる。
(1) 蛍光色材
本願に用いられる蛍光色材としては、例えばスチルベン系化合物、ビフェニル系化合物、クマリン系化合物、イミダゾール系化合物、ベンゾオキサゾリル系化合物、ナフタルイミド系化合物、ピラゾロン系化合物、カルボスチリル系化合物、トリアゾール系化合物、などが挙げられる。これらの中でも、発明に用いられる蛍光色材としては有機溶剤への溶解性の観点からスチルベン系化合物が好ましく、特に図12で表されるスルホ基を有するスチルベン系化合物が好ましい。以下、本願に好ましく使用される蛍光色材の化合物例を示すが、本願はこれらに限定されることはない。 Hereinafter, embodiments of the present application will be described. The embodiments described below are merely examples that embody the present application, and do not limit the technical scope of the present application.
1. Constituent materials of the compensating liquid The compensating liquid contains at least a fluorescent coloring material and a solvent. These are dissolved, stirred and mixed, and then filtered through a filter having a pore size of 0.25 to 10 μm to obtain a compensating liquid for an inkjet printer.
(1) Fluorescent coloring material Examples of the fluorescent coloring material used in the present application include stilbene-based compounds, biphenyl-based compounds, coumarin-based compounds, imidazole-based compounds, benzoxazolyl-based compounds, naphthalimide-based compounds, pyrazolone-based compounds, and carbo. Examples thereof include stilyl compounds and triazole compounds. Among these, as the fluorescent coloring material used in the invention, a stilbene compound is preferable from the viewpoint of solubility in an organic solvent, and a stilbene compound having a sulfo group shown in FIG. 12 is particularly preferable. Hereinafter, examples of compounds of fluorescent colorants preferably used in the present application will be shown, but the present application is not limited thereto.

蛍光色材の添加量を増やせば補力液の可視発光量は増大するが、その一方で溶解の不安定化を招き析出する恐れがある。添加量を減らせば蛍光色材の析出は抑えられるが、十分な可視発光が得られない恐れがある。図12の例であれば、例えばエタノールに1.0wt%以上加えると析出が起きることがわかっている。また、1.0×10-4 wt%以上であれば発光が確認できる。以上より、エタノールを溶剤とした場合、1.0×10-4wt%以上1.0wt%未満が好ましく、溶解安定性、可視発光両立の観点から1.0×10-3wt%以上1.0×10-1wt%未満がより好ましい。
(2)溶剤
溶剤の主成分としてアルコール系またはケトン系溶剤を用いる。アルコール系溶剤としてはメタノール、エタノール、プロパノール、ブタノール等が挙げられる。ケトン系溶剤としては例えばアセトン、メチルエチルケトン(MEK)、メチルイソブチルケトン(MIBK)等が挙げられる。これらを単独、或いは混合して使用する。その他、エーテル系溶剤、グリコール系溶剤を加えても良い。
(3)添加剤
蛍光色材の溶剤への溶解性を向上させる目的、或いは補力液の粘度、導電率、表面張力など諸物性を調整する目的で添加剤を加えても良い。
2.インクジェットプリンタ
(1) 印字方式
上記の補力液は、公知の印字方式のインクジェットプリンタで使用することができる。
印字方式には例えば帯電制御方式、ドロップ・オン・デマンド方式等が挙げられるが、本願は特に補力液タンクを使用する帯電制御方式に適している。
(2) 補力液タンク
補力液タンクに発光素子および受光素子を組み込むことにより所定の位置におけるタンク内補力液の有無を検知し、それにより液面高さを推定することができる。発光素子、受光素子はタンク内壁又は外壁などに組み込むことができる。発光素子の光源は省エネ、長寿命の観点でLEDであることが好ましい。発光素子の光源が発する照射光は、補力液の可視発光が確認できるよう波長のピーク値が200nm〜400nmの紫外線が好ましいが、その中で近紫外線と呼ばれる人体への影響の少ないピーク値315nm〜400nmの波長の光がより好ましく、より安全な、一般にブラックライトと呼ばれるピーク値360〜390nmの波長の光が最も好ましい。補力液に使用する蛍光色材の種類によって発する可視光の波長は異なるため、受光素子に使用する光センサの検知波長域は蛍光色材が発する可視光の波長に応じて決定する。例えば図12を蛍光色材として使用した場合、450nmをピークとして400nm〜550nmの幅を持つ蛍光スペクトルを発するため受光素子の光センサとして、例えばCdS光センサを使用することができる。可視光の有無によって抵抗値が変わるCdS光センサの特性を利用し、例えば出力電圧値VOUTをモニタリングすることで可視光の有無を検知できる図1のような公知のセンサ回路を受光素子に含んでも良い。光センサとして、その他カドミウムフリーの光センサを使用しても良い。発光素子および受光素子は最低1組あれば良いが液面の高さをより高精度に検出するために複数組用いることも可能である。また、本願の補力液タンクは必要に応じて公知のフロートを用いた補力液の液面検知システムを併せて有しても良い。以上のように、本願の補力液の液面高さを推定する以外にも、同じメカニズムを用いて充填した補力液の可視発光の有無により補力液の間違い防止に使用しても良い。 Increasing the amount of the fluorescent coloring material added increases the amount of visible light emitted from the compensating liquid, but on the other hand, it may lead to destabilization of dissolution and precipitation. If the amount added is reduced, the precipitation of the fluorescent coloring material can be suppressed, but sufficient visible light emission may not be obtained. In the case of FIG. 12, it is known that precipitation occurs when 1.0 wt% or more is added to ethanol, for example. In addition, if it is 1.0 × 10 -4 wt% or more, light emission can be confirmed. From the above, when ethanol is used as the solvent, 1.0 × 10 -4 wt% or more and less than 1.0 wt% is preferable, and 1.0 × 10 -3 wt% or more and 1.0 × 10 -1 wt% from the viewpoint of both dissolution stability and visible light emission. Less than is more preferred.
(2) Solvent An alcohol-based or ketone-based solvent is used as the main component of the solvent. Examples of the alcohol solvent include methanol, ethanol, propanol, butanol and the like. Examples of the ketone solvent include acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK) and the like. These are used alone or in combination. In addition, an ether solvent or a glycol solvent may be added.
(3) Additives Additives may be added for the purpose of improving the solubility of the fluorescent coloring material in the solvent, or for the purpose of adjusting various physical properties such as the viscosity, conductivity, and surface tension of the compensating liquid.
2. Inkjet printer
(1) Printing method The above-mentioned assisting liquid can be used in an inkjet printer having a known printing method.
Examples of the printing method include a charge control method, a drop-on-demand method, and the like, but the present application is particularly suitable for a charge control method using a boosting liquid tank.
(2) Compensating liquid tank By incorporating a light emitting element and a light receiving element in the compensating liquid tank, the presence or absence of the compensating liquid in the tank at a predetermined position can be detected, and the liquid level height can be estimated accordingly. The light emitting element and the light receiving element can be incorporated into the inner wall or the outer wall of the tank. The light source of the light emitting element is preferably an LED from the viewpoint of energy saving and long life. The irradiation light emitted by the light source of the light emitting element is preferably ultraviolet light having a wavelength peak value of 200 nm to 400 nm so that the visible light emission of the assistive liquid can be confirmed. Light with a wavelength of ~ 400 nm is more preferable, and light with a peak value of 360 to 390 nm, which is generally called black light, which is safer, is most preferable. Since the wavelength of visible light emitted differs depending on the type of fluorescent coloring material used for the reinforcing liquid, the detection wavelength range of the optical sensor used for the light receiving element is determined according to the wavelength of visible light emitted by the fluorescent coloring material. For example, when FIG. 12 is used as a fluorescent color material, a CdS optical sensor can be used as an optical sensor of a light receiving element because it emits a fluorescence spectrum having a peak of 450 nm and a width of 400 nm to 550 nm. The light receiving element includes a known sensor circuit as shown in Fig. 1, which can detect the presence or absence of visible light by monitoring the output voltage value V OUT , for example, by utilizing the characteristics of the CdS optical sensor whose resistance value changes depending on the presence or absence of visible light. But it's okay. As the optical sensor, another cadmium-free optical sensor may be used. At least one set of light emitting element and light receiving element is sufficient, but it is also possible to use a plurality of sets in order to detect the height of the liquid level with higher accuracy. Further, the compensating liquid tank of the present application may also have a liquid level detecting system for the compensating liquid using a known float, if necessary. As described above, in addition to estimating the liquid level height of the coercive liquid of the present application, it may be used to prevent mistakes in the coercive liquid depending on the presence or absence of visible light emission of the coercive liquid filled using the same mechanism. ..

100gのエタノールに、化1で表される蛍光色材Aを0.1g加え、撹拌して溶解させた液を0.5μm孔径のポリプロピレン製フィルタで濾過した。こうして本実施例の補力液を調製した。 To 100 g of ethanol, 0.1 g of the fluorescent colorant A represented by Chemical formula 1 was added, and the solution dissolved by stirring was filtered through a polypropylene filter having a pore size of 0.5 μm. In this way, the booster solution of this example was prepared.

調製した補力液にピーク値200nmの光を照射したところ、補力液内からピーク値450nmの可視光の発光が見られた。 When the prepared compensator was irradiated with light having a peak value of 200 nm, visible light emission with a peak value of 450 nm was observed from inside the compensator.

調製した補力液にピーク値400nmの光を照射したところ、補力液からピーク値450nmの可視光の発光が見られた。
（比較例1）
100gのエタノール液を0.5μm孔径のポリプロピレン製フィルタで濾過した。こうして本比較例の補力液を調製した。 When the prepared compensator was irradiated with light having a peak value of 400 nm, visible light emission with a peak value of 450 nm was observed from the compensator.
(Comparative example 1)
100 g of ethanol solution was filtered through a polypropylene filter having a pore size of 0.5 μm. In this way, the compensating solution of this comparative example was prepared.

調製した補力液にピーク値200nmの光を照射したところ、補力液内で可視光域にピーク値をもつ光は見られなかった。 When the prepared compensator was irradiated with light having a peak value of 200 nm, no light having a peak value in the visible light region was observed in the compensator.

調製した補力液にピーク値400nmの光を照射したところ、補力液内で可視光域にピーク値をもつ光は見られなかった。 When the prepared compensator was irradiated with light having a peak value of 400 nm, no light having a peak value in the visible light region was observed in the compensator.

図2はインクジェットプリンタ10を示す斜視図、図3は実施例2における補力液タンク内部の模式図、図4はインクジェットプリンタ装置内の信号伝達の模式図、図5は補力液の液面高さおよび受光センサの高さの高低を判断するアルゴリズム図である。 FIG. 2 is a perspective view showing the inkjet printer 10, FIG. 3 is a schematic diagram of the inside of the booster liquid tank in Example 2, FIG. 4 is a schematic diagram of signal transmission in the inkjet printer device, and FIG. 5 is a liquid level of the booster liquid. It is an algorithm diagram which determines the height and the height of a light receiving sensor.

図2のインクジェットプリンタ10には、外部には操作表示部3が備えられた本体1と印字ヘッド2が備えられており、本体1と印字ヘッド2は導管4で接続されている。本実施例ではインクジェットプリンタ10に図3に示す発光素子102および受光素子103を内壁に組み込んだ補力液タンク101を搭載した。発光素子102はピーク値375nmの光を発するLEDを使用した。受光素子の光センサにはCdS光センサを用い、図1に示す回路により可視光の有無を検知した。補力液タンクは外部からの可視光を遮蔽する材料とした。実施例1で調製した補力液を補力液タンク101に所定量充填した。受光センサ103の高さH2を補力液の液面111の高さH1が下回ると操作表示部3を介して警報を出し、作業者に補力液を充填するよう指示する設定とした。本実施例ではH1がH2よりも高かった。発光素子102からピーク値375nmの光121を照射したところ、補力液からピーク値450nmの可視光122の発光が見られた。可視光122が受光素子103により検知された。図4に示すように受光素子103で可視光が検知された結果をインクジェットプリンタ本体1内のCPU20に信号線21を介して伝達したところ図5に示したアルゴリズムよりH1はH2よりも高いと正しく判断した。信号線22を介して操作表示部3に補力液充填量が十分である旨を表示させた。 The inkjet printer 10 of FIG. 2 is provided with a main body 1 and a print head 2 provided with an operation display unit 3 on the outside, and the main body 1 and the print head 2 are connected by a conduit 4. In this embodiment, the inkjet printer 10 is equipped with a compensating liquid tank 101 in which the light emitting element 102 and the light receiving element 103 shown in FIG. 3 are incorporated in the inner wall. The light emitting element 102 used an LED that emits light with a peak value of 375 nm. A CdS optical sensor was used as the optical sensor of the light receiving element, and the presence or absence of visible light was detected by the circuit shown in FIG. The auxiliary liquid tank is made of a material that shields visible light from the outside. The reinforcing liquid tank 101 prepared in Example 1 was filled with a predetermined amount. When the height H 2 of the light receiving sensor 103 falls below the height H 1 of the liquid level 111 of the compensating liquid, an alarm is issued via the operation display unit 3 to instruct the operator to fill the compensating liquid. .. In this example, H 1 was higher than H 2. When light 121 having a peak value of 375 nm was irradiated from the light emitting element 102, visible light 122 having a peak value of 450 nm was emitted from the compensating liquid. Visible light 122 was detected by the light receiving element 103. As shown in FIG. 4, when the result of visible light detected by the light receiving element 103 is transmitted to the CPU 20 in the inkjet printer main body 1 via the signal line 21, H 1 is higher than H 2 than the algorithm shown in FIG. Was judged correctly. The operation display unit 3 was displayed via the signal line 22 to the effect that the filling amount of the compensating liquid was sufficient.

本発明によれば、タンク内に補力液があれば発光素子からの光で補力液中の蛍光材料が可視光を発し、その可視光を受光素子が検知する。その結果、固体間の機械的磨耗や材質劣化による液面検出誤差を抑制し、常に精度の高い液面検出が可能となる。 According to the present invention, if there is an auxiliary liquid in the tank, the fluorescent material in the auxiliary liquid emits visible light by the light from the light emitting element, and the light receiving element detects the visible light. As a result, the liquid level detection error due to mechanical wear and material deterioration between solids is suppressed, and the liquid level can always be detected with high accuracy.

本実施例の補力液タンクの模式図を図6に示す。図6の通り本実施例ではH1がH2よりも低いとした以外、実施例2と同じ構成、設定とした。発光素子102からピーク値375nmの光121を照射したが、受光素子103により可視光域にピーク値を持つ光は検知されなかった。検知結果を実施例2と同様に処理したところH1はH2よりも低いと正しく判断した。信号線22を介して操作表示部3に補力液充填量が不充分であり補力液の補充が必要である旨を表示させた。 FIG. 6 shows a schematic diagram of the compensating liquid tank of this embodiment. As shown in Fig. 6, in this example, the configuration and settings are the same as in Example 2 except that H 1 is lower than H 2. Light 121 having a peak value of 375 nm was irradiated from the light emitting element 102, but light having a peak value in the visible light region was not detected by the light receiving element 103. When the detection results were processed in the same manner as in Example 2, it was correctly determined that H 1 was lower than H 2. The operation display unit 3 was displayed via the signal line 22 to the effect that the filling amount of the reinforcing liquid was insufficient and the supplementing liquid needed to be replenished.

本実施例の補力液タンクの模式図を図7に示す。図7の通り本実施例では補力液タンク101に発光素子102A,102B,102Cおよび受光素子103A,103B,103Cを内壁に組み込み、HB < H1 < HAとし、警報を出す液面高さをHcとした以外は実施例2と同じ構成、設定とした。発光素子102A,102B,102Cの3点からピーク値375nmの光121を照射したところ、補力液内でピーク値450nmの可視光122の発光が見られた。可視光122は受光素子103B,103Cでは検知された一方、受光素子103Aでは検知されなかった。検知結果を実施例2と同様に処理したところHB < H1 < HAであると正しく判断した。信号線22を介して操作表示部3に補力液充填量が十分である旨を表示させた。 FIG. 7 shows a schematic diagram of the compensating liquid tank of this embodiment. As shown in FIG. 7, in this embodiment, the light emitting elements 102A, 102B, 102C and the light receiving elements 103A, 103B, 103C are incorporated in the inner wall of the auxiliary liquid tank 101, and H B <H 1 < HA, and the liquid level height that issues an alarm. The configuration and settings were the same as in Example 2 except that H c was used. When light 121 having a peak value of 375 nm was irradiated from three points of the light emitting elements 102A, 102B, and 102C, light emission of visible light 122 having a peak value of 450 nm was observed in the compensating liquid. Visible light 122 was detected by the light receiving elements 103B and 103C, but not by the light receiving elements 103A. When the detection result was processed in the same manner as in Example 2, it was correctly determined that H B <H 1 < HA. The operation display unit 3 was displayed via the signal line 22 to the effect that the filling amount of the compensating liquid was sufficient.

本実施例の補力液タンクの模式図を図8に示す。図8の通り、各受光素子を補力液タンク101外壁に組み込み、発光素子の組み込み位置を補力液タンク101底部（補力液タンクの外側）とした以外は実施例4と同じ構成、設定とした。なお、各受光素子、発光素子の受光、発光機能に支障がなきよう補力液タンク101の各素子組み込み部は加工してある。発光素子102からピーク値375nmの光121を照射したところ、補力液内でピーク値450nmの可視光122の発光が見られた。可視光122は受光素子103B,103Cでは検知された一方、受光素子103Aでは検知されなかった。検知結果を実施例2と同様に処理したところHB < H1 < HAであると正しく判断した。信号線22を介して操作表示部3に補力液充填量が十分である旨を表示させた。 FIG. 8 shows a schematic diagram of the compensating liquid tank of this embodiment. As shown in FIG. 8, the same configuration and setting as in Example 4 except that each light receiving element is incorporated in the outer wall of the auxiliary liquid tank 101 and the light emitting element is incorporated in the bottom of the auxiliary liquid tank 101 (outside the auxiliary liquid tank). And said. It should be noted that each element built-in portion of the compensating liquid tank 101 is processed so as not to interfere with the light receiving element, the light receiving element of the light emitting element, and the light emitting function. When light 121 having a peak value of 375 nm was irradiated from the light emitting element 102, light emission of visible light 122 having a peak value of 450 nm was observed in the compensating liquid. Visible light 122 was detected by the light receiving elements 103B and 103C, but not by the light receiving elements 103A. When the detection result was processed in the same manner as in Example 2, it was correctly determined that H B <H 1 < HA. The operation display unit 3 was displayed via the signal line 22 to the effect that the filling amount of the compensating liquid was sufficient.

本実施例の補力液タンクの模式図を図9に示す。図9の通り本実施例ではフロート130を使用した液面検知システムを付けた以外、実施例2と同じ構成とし、図10で示すアルゴリズムで動作することとした。なお、フロート130およびそれを支える支持棒は発光素子、受光素子の機能に支障をきたさない位置に固定した。フロート130により補力液の液面111高さH1が受光センサ高さのH2よりも高い位置にあることを検知した。その結果を受けて発光素子102からピーク値375nmの光121を照射したところ、補力液からピーク値450nmの可視光122の発光が見られた。可視光122が受光素子103により検知された。図4に示すように受光素子103で可視光が検知された結果をインクジェットプリンタ本体1内のCPU20に信号線21を介して伝達したところ信号線22を介して操作表示部3に正しい補力液が十分に充填されている旨を表示させた。 FIG. 9 shows a schematic diagram of the compensating liquid tank of this embodiment. As shown in FIG. 9, in this embodiment, the configuration is the same as in Example 2 except that the liquid level detection system using the float 130 is attached, and the algorithm shown in FIG. 10 is used. The float 130 and the support rods supporting the float 130 were fixed at positions that did not interfere with the functions of the light emitting element and the light receiving element. It was detected by the float 130 that the liquid level 111 height H 1 of the assisting liquid was higher than the light receiving sensor height H 2. In response to the result, when light 121 having a peak value of 375 nm was irradiated from the light emitting element 102, light emission of visible light 122 having a peak value of 450 nm was observed from the compensating liquid. Visible light 122 was detected by the light receiving element 103. As shown in FIG. 4, when the result of visible light detected by the light receiving element 103 is transmitted to the CPU 20 in the inkjet printer main body 1 via the signal line 21, the correct compensating liquid is transmitted to the operation display unit 3 via the signal line 22. Was displayed to the effect that it was sufficiently filled.

本実施例の補力液タンクの模式図を図11に示す。補力液タンク101に比較例1で作成した補力液を充填した以外は実施例6と同じ構成、設定とした。フロート130により補力液の液面111高さH1が受光センサ高さのH2よりも高い位置にあることを検知した。その結果を受けて発光素子102からピーク値375nmの光121を照射したが、可視光は受光素子103により検知されなかった。検知結果を実施例7と同様に処理したところ信号線22を介して操作表示部3に補力液の充填が必要、又は間違った補力液を使用している可能性がある旨を表示させた。 FIG. 11 shows a schematic diagram of the compensating liquid tank of this embodiment. The configuration and settings were the same as those in Example 6 except that the booster liquid tank 101 was filled with the booster liquid prepared in Comparative Example 1. It was detected by the float 130 that the liquid level 111 height H 1 of the assisting liquid was higher than the light receiving sensor height H 2. In response to the result, light 121 having a peak value of 375 nm was irradiated from the light emitting element 102, but visible light was not detected by the light receiving element 103. When the detection result was processed in the same manner as in Example 7, the operation display unit 3 was displayed via the signal line 22 to indicate that it was necessary to fill the booster liquid or that the wrong booster liquid might be used. rice field.

１：本体、２：印字ヘッド、３：操作表示部、４：導管、１０：インクジェットプリンタ、２０：CPU、２１：信号線(CPU入力用)、２２：信号線(操作表示部入力用)、１０１：補力液タンク、１０２：発光素子、１０３：受光素子、１１１：補力液の液面、１２１：ピーク値375nmの光、１２２：ピーク値450nmの可視光 1: Main body 2: Print head 3: Operation display unit 4: Conduit 10: Inkjet printer, 20: CPU, 21: Signal line (for CPU input), 22: Signal line (for operation display unit input), 101: Auxiliary liquid tank, 102: Light emitting element, 103: Light receiving element, 111: Auxiliary liquid level, 121: Light with a peak value of 375 nm, 122: Visible light with a peak value of 450 nm

Claims (6)

インクを吐出する印字ヘッドと、
前記インクが収容されるインクタンクと、
補力液が収容される補力液タンクと、
前記補力液タンクまたは前記インクタンクの状態に関する情報を表示可能なディスプレイと、を備えるインクジェットプリンタ装置であって、
前記補力液の量を検出するフロートセンサと、紫外光を発光する発光素子と、可視光を検出する受光素子とが前記補力液タンクに取り付けられており、前記発光素子と前記受光素子は、前記補力液タンクの側面に互いに対向するように取り付けられ、
前記発光素子から紫外光を発光して、前記受光素子にて可視光を検出したか否かを判定し、その判定結果に基づいて、前記補力液タンク内の補力液に充填されている補力液が正しいかどうかを、前記ディスプレイに表示することを特徴とするインクジェットプリンタ装置。 A print head that ejects ink and
The ink tank in which the ink is stored and the ink tank
A compensating fluid tank that houses the compensating fluid and a compensating fluid tank,
An inkjet printer device comprising a display capable of displaying information regarding the state of the compensating liquid tank or the ink tank.
A float sensor that detects the amount of the compensating liquid, a light emitting element that emits ultraviolet light, and a light receiving element that detects visible light are attached to the compensating liquid tank, and the light emitting element and the light receiving element are , Attached to the sides of the compensator tank so as to face each other,
Ultraviolet light is emitted from the light emitting element, it is determined whether or not visible light is detected by the light receiving element, and based on the determination result, the compensating liquid in the compensating liquid tank is filled. An inkjet printer device comprising displaying on the display whether or not the compensating liquid is correct. 請求項１記載のインクジェットプリンタ装置であって、
前記フロートセンサにより前記補力液タンク内の補力液の液面が前記発光素子および前記受光素子よりも高い位置にあることを検出して、かつ、前記発光素子から紫外光を発光し、前記受光素子にて可視光を検出する場合に、前記ディスプレイ上に前記補力液タンク内の補力液に充填されている補力液が正しいことを示す情報を表示することを特徴とするインクジェットプリンタ装置。 The inkjet printer device according to claim 1.
The float sensor detects that the liquid level of the auxiliary liquid in the auxiliary liquid tank is higher than that of the light emitting element and the light receiving element, and emits ultraviolet light from the light emitting element. An inkjet printer characterized in that when visible light is detected by a light receiving element, information indicating that the coercive liquid filled in the coercive liquid in the coercive liquid tank is correct is displayed on the display. Device. 請求項１記載のインクジェットプリンタ装置であって、
前記フロートにより前記補力液タンク内の補力液の液面が前記発光素子および前記受光素子よりも高い位置にあることを検出して、かつ前記発光素子から紫外光を発光し、前記受光素子にて可視光を検出しない場合に、前記ディスプレイ上に前記補力液タンク内の補力液に充填されている補力液が正しくないことを表示することを特徴とするインクジェットプリンタ装置。 The inkjet printer device according to claim 1.
The float detects that the liquid level of the compensating liquid in the compensating liquid tank is higher than the light emitting element and the light receiving element, and emits ultraviolet light from the light emitting element to emit ultraviolet light, and the light receiving element. The inkjet printer device is characterized in that when visible light is not detected in the display, it is displayed on the display that the compensating liquid filled in the compensating liquid in the compensating liquid tank is incorrect. 請求項1記載のインクジェットプリンタ装置であって、
前記補力液の溶剤主成分がアルコール系またはケトン系であることを特徴とするインクジェットプリンタ装置。 The inkjet printer device according to claim 1.
An inkjet printer apparatus characterized in that the solvent main component of the reinforcing liquid is an alcohol-based or a ketone-based. 請求項１から４のいずれかに記載のインクジェットプリンタ装置であって、
前記補力液は、光を照射すると可視光を発する蛍光色材と、溶剤と、を含む補力液であり、
前記蛍光色材がクマリン構造を有する化合物またはスチルベン構造を有する化合物であることを特徴とするインクジェットプリンタ装置。 The inkjet printer device according to any one of claims 1 to 4.
The compensating liquid is a compensating liquid containing a fluorescent coloring material that emits visible light when irradiated with light and a solvent.
An inkjet printer apparatus, wherein the fluorescent coloring material is a compound having a coumarin structure or a compound having a stilbene structure. 請求項１から５のいずれかに記載のインクジェットプリンタ装置であって、
前記発光素子の光のピーク波長が200nm以上400nm以下のブラックライトであることを特徴とするインクジェットプリンタ装置。 The inkjet printer device according to any one of claims 1 to 5.
An inkjet printer device characterized in that the peak wavelength of the light of the light emitting element is a black light of 200 nm or more and 400 nm or less.
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