CN104419258A - Ink composition, set of ink composition and ink container, ink container, and recording apparatus - Google Patents

Abstract

The invention provides an ink composition capable of inhibing the generation of aggregates in an ink container. The ink composition adapted to be poured into an ink container including an ink chamber, the ink chamber partitioned by a wall, refillable with the ink composition via an ink poring port, and communicating with external air, the ink composition comprising a pigment, a resin and an organic solvent, wherein the ink composition has a static contact angle of 10 DEG or more to a member constituting an inner side of the wall.

Description

The combination of ink composite, ink composite and ink reservoir, ink reservoir, recording unit

Technical field

The present invention relates to ink composite, ink reservoir and both combinations and recording unit.

Background technology

All the time, known ink-jet recording device: it utilizes the small droplets of ink that sprays from the nozzle of the record shower nozzle of ink-vapor recording document image etc. on the recording medium.Ink-jet recording device has for the ink reservoir (such as, print cartridge etc.) to record-header supply ink composite.

As such ink reservoir, there will be a known when the ink composite in ink reservoir reach a certain amount of below time change the container (so-called print cartridge) of type of ink reservoir itself, in addition do not change ink reservoir in addition and in the ink reservoir of continuous supply-type the container (so-called continuous supply-type ink reservoir) of the type of supplementary (injection) ink composite.For example, Patent Document 1 discloses from continuous supply-type ink tank via the ink-jet recording device of inking pipe to inkjet head supply ink, this ink tank has the structure that can recharge ink.

Patent documentation 1: Japanese Unexamined Patent Publication 2012-148511 publication

Summary of the invention

But the ink chamber of this continuous supply-type ink reservoir recorded in patent documentation 1 is the container of the so-called atmosphere opening type to atmosphere opening.

Therefore, in container ink chamber, produce the interface (liquid-gas interface) of air and the ink be present in above in ink chamber.The ink composite used in such ink reservoir is easily dry at liquid-gas interface, so easily produce the condensation product from the composition contained by ink at liquid-gas interface.That is, along with the evaporation carrying out moisture etc. in the film produced at liquid-gas interface, the solids component in ink condenses and becomes condensation product.When particularly the wettability of ink to the material forming ink chamber inwall is high, the area of the film formed at the contact position of the inner side of wall and ink level becomes large and thinning, and the generation degree of condensation product uprises.Record-header due to ink-jet recording device is the mechanism from fine nozzle ejection droplets of ink, if so condensation product arrives nozzle, easily cause the blocking etc. of nozzle, record image quality reduces.Therefore, in order to make the foreign matters such as condensation product not arrive nozzle, the strainer being used for catching foreign matter is set usually on stream ink being transported to nozzle.But if foreign matter bulk deposition in the filter, then the ink supply amount to record-header tails off, and hinders normal record.

And, the continuous supply-type ink reservoir of ink can be recharged, compared with the ink reservoir of box type, the contact position of the area of liquid-gas interface, the inner side of wall and ink level is extremely large, duration of service is very long, so condensation product easily produces in a large number or continually, the supply of ink that causes by strainer of the condensation product that catches is bad etc. that bad phenomenon easily becomes serious.

The several modes that the present invention relates to are a part by least solving above-mentioned problem and provide a kind of ink composite that can suppress the generation of condensation product as above in the ink reservoir of continuous supply-type.

The present invention carries out in order to the part at least solving above-mentioned problem, can be realized by following mode or application examples.

Application examples 1

A mode of the ink composite that the present invention relates to is the ink composite be injected in ink reservoir, and above-mentioned ink reservoir has can the ink chamber of makeup oil ink composition from ink inlet, and above-mentioned ink chamber can be communicated with extraneous air,

Above-mentioned ink composite contains pigment, resin and organic solvent,

Further, the static contact angle dividing the parts of the inner side of the wall of above-mentioned ink chamber with formation is more than 10 °.

According to the ink composite of application examples 1, the generation of condensation product can be suppressed, so the ejection excellent in stability of recording unit.

Application examples 2

In application examples 1, water can be contained further,

Further, the ink composite before being evaporated by moisture is set to CA with the static contact angle of the parts of the inner side of the above-mentioned wall of formation ₀, ink composite when evaporating the moisture of 1 quality % relative to the total mass 100 quality % of ink composite before moisture evaporation and the static contact angle of parts of the inner side forming above-mentioned wall are set to CA ₁time, all meet following each condition:

Condition (1): 10 °≤CA ₀and 10 °≤CA ₁

Condition (2): 0 °≤CA ₀-CA ₁≤ 5 °

Application examples 3

In application examples 1 or application examples 2, the surface tension of above-mentioned ink composite can be 20mN/m ~ 50mN/m.

Application examples 4

In wantonly 1 example of application examples 1 ~ application examples 3, the content of above-mentioned organic solvent can be 5 quality % ~ 40 quality %.

Application examples 5

In wantonly 1 example of application examples 1 ~ application examples 4, above-mentioned organic solvent can containing more than one in glycerine and the polyalcohols, nitrogen-containing heterocycle compound, urea and the urea derivative that are selected from beyond above-mentioned glycerine.

Application examples 6

In wantonly 1 example of application examples 1 ~ application examples 5, the second-order transition temperature of above-mentioned resin can be less than 25 DEG C.

Application examples 7

In wantonly 1 example of application examples 1 ~ application examples 6, above-mentioned ink composite can be more than 5 ° with the receding contact angle of the parts of the inner side of the above-mentioned wall of formation.

Application examples 8

In wantonly 1 example of application examples 1 ~ application examples 7, the initial surface tension of ink composite can be set to γ _m0, the surface tension when solvent in ink being evaporated 3.5 quality % is set to γ _m1, the surface tension when solvent in ink being evaporated 7 quality % is set to γ _m2, the surface tension when solvent in ink being evaporated 12 quality % is set to γ _m3time, meet more than 2 in following condition (3-1), (3-2), (3-3) or all meet following condition (4-1), (4-2), (4-3) simultaneously.

Condition (3-1): γ _m1-γ _m0> 0 (mN/m)

Condition (3-2): γ _m2-γ _m0> 0 (mN/m)

Condition (3-3): γ _m3-γ _m0> 0 (mN/m)

Condition (4-1): γ _m1-γ _m0>-0.05 (mN/m)

Condition (4-2): γ _m2-γ _m0>-0.05 (mN/m)

Condition (4-3): γ _m3-γ _m0>-0.05 (mN/m)

Application examples 9

In wantonly 1 example of application examples 1 ~ application examples 8, the content of above-mentioned organic solvent, can for more than 1 times and less than 10 times relative to the total of the content of above-mentioned pigment and above-mentioned resin.

Application examples 10

A mode of the combination that the present invention relates to is the ink composite and above-mentioned ink reservoir recorded in wantonly 1 example containing application examples 1 ~ application examples 9.

Application examples 11

A mode of the ink reservoir that the present invention relates to is connected the ink reservoir used, and has: supplement the ink chamber of the ink composite recorded in wantonly 1 example of application examples 1 ~ application examples 9 and can inject the ink inlet of described ink composite to described ink chamber.

Application examples 12

A mode of the recording unit that the present invention relates to is the recording unit possessing the ink reservoir recorded in application examples 11.

Accompanying drawing explanation

Fig. 1 is the stereographic map schematically showing the ink-jet recording device that an embodiment of the invention relate to.

Fig. 2 is the stereographic map that the record cell schematically showing the ink-jet recording device that an embodiment of the invention relate to is incorporated in the state in record cell accepting box.

Fig. 3 be in the ink-jet recording device conceptually representing that an embodiment of the invention relate to from atmospheric air open port to the figure in the path of ink leading-out portion.

Fig. 4 is the figure of a part for the internal structure schematically showing the ink-jet recording device that an embodiment of the invention relate to.

Fig. 5 is the stereoscopic figure schematically showing the ink reservoir that an embodiment of the invention relate to.

Fig. 6 is the stereographic map schematically showing the ink reservoir internal structure in a state of use that an embodiment of the invention relate to.

Fig. 7 is the stereographic map schematically showing the ink reservoir internal structure in a state of use that an embodiment of the invention relate to.

Fig. 8 is the side-view schematically showing the ink reservoir internal structure in a state of use that an embodiment of the invention relate to.

Fig. 9 is the vertical view of the part schematically showing the ink reservoir internal structure in a state of use that an embodiment of the invention relate to.

Figure 10 is the figure schematically showing the ink reservoir internal structure in a state of use that an embodiment of the invention relate to.

Figure 11 is the figure schematically showing the ink reservoir internal structure in a state of use that an embodiment of the invention relate to.

Figure 12 is the side-view of the shape schematically showing the ink reservoir that an embodiment of the invention relate to.

Figure 13 is the figure of the passing of the liquid level of the ink schematically shown in the ink chamber of the ink reservoir that an embodiment of the invention relate to.

Figure 14 is the figure representing the bottle containing the ink composite that an embodiment of the invention relate to.

Embodiment

Preferred embodiment be described of the present invention below.The embodiment below illustrated is described an example of the present invention.In addition, the invention is not restricted to following embodiment, be also included in the interior various variation implemented of the scope not changing main idea of the present invention.

1. ink composite

1.1. composition

Ink composite of the present embodiment is injected into ink reservoir and uses, and this ink reservoir is connected with recording unit, and have the ink chamber and ink inlet to be opened/closed that can supplement this ink composite, ink chamber can be communicated with extraneous air.In addition, ink composite of the present embodiment contains pigment, organic solvent and resin.

Ink composite of the present embodiment is designed to based on the structure of recording unit, ink reservoir, character the characteristic that meets the demands, and coordinates carry out produce and market with specific recording unit and ink reservoir.In the present invention, by be designed to the parts of the inner side of the wall 370 to the ink accepting container forming the ink composite of filling present embodiment, static contact angle is more than 10 °, thus made the ink composite not easily forming the film of ink at boundary member A.Below, the composition that ink composite of the present embodiment (following, also referred to as " ink ") can contain is described.

< pigment >

Ink of the present embodiment contains pigment.Pigment compared with dyestuff, the excellence such as water tolerance, gas resistance, photostabilization.

As pigment, the known pigment such as mineral dye, pigment dyestuff all can use.As mineral dye, such as, can enumerate titanium oxide, ferric oxide, calcium carbonate, barium sulfate, aluminium hydroxide, baryta yellow, cadmium red, chrome yellow, carbon black, Prussian blue and metal powder, but be not limited to above-mentioned example.

As pigment dyestuff, such as, can enumerate azo pigment, polycycle pigment, nitropigments, nitroso pigments and nigrosine etc., but be not limited to above-mentioned example.Wherein, at least one in preferred azo pigment and polycycle pigment.As azo pigment, such as, can enumerate azo lake, insoluble azo colour, condensed azo-pigment and chelate azo pigment, but be not limited to above example.As polycycle pigment, such as, can enumerate phthalocyanine pigment, perylene dye, purple cyclic ketones pigment, anthraquinone pigment, quinacridone pigment, two piperazine pigment, indigo pigments, thioindigo color, isoindoline pigment, quinoline dai ketone pigment, azomethine series pigments and rhodamine B lake pigment etc., but be not limited to above example.

The median size (following, also referred to as " median size of pigment ") of the volume reference of pigment is preferably 30nm ~ 300nm, is more preferably 50nm ~ 200nm.By making the median size of pigment in above-mentioned scope, sometimes can improve the color emissivity of pigment or reducing over the blocking of filter, record-header.

The median size of pigment can be measured by the particle size distribution device being measuring principle with laser diffraction and scattering method.As particle size distribution device, such as, can use in dynamic light scattering method is the size-grade distribution (such as, " Microtrac UPA " Nikkiso Company Limited's system) of measuring principle.

Such from the viewpoint of the dispersiveness of raising pigment in ink, can be implemented surface-treated pigment, also can be the pigment utilizing dispersion agent etc.Implemented surface-treated pigment to refer to and directly or indirectly make in conjunction with hydrophilic radical (carboxyl, sulfonic group, phosphate etc.) pigment (hereinafter also referred to as " pigment of self-dispersion type ") dispersibled in aqueous solvent by physical treatment or chemical treatment in surface of pigments.In addition, utilize the pigment of dispersion agent to refer to and utilize tensio-active agent, pigment (hereinafter also referred to as " polymer dispersion pigment ") that resin makes colo(u)rant dispersion, as tensio-active agent, resin, any known material can be used.In addition, also comprise by resin-coated pigment in " polymer dispersion pigment ".Can be obtained by acid-precipitation method, phase conversion emulsifying and microemulsion polymerization method etc. by resin-coated pigment.Pigment due to self-dispersion type can reduce the content of the resin in ink, so preferably use.

< resin >

Ink of the present embodiment contains resin.Resin possesses functions such as improving the adaptation being attached to recording medium curing ink, the dispersiveness improving above-mentioned pigment.

As resin, the resin of any types such as the resin of the particle state having made dissolved state, emulsion etc. can be used.Such as, when resin is particle shape (hereinafter also referred to as " resin particle "), the median size (following, also referred to as " median size of resin particle ") of the volume reference of resin particle is preferably 30nm ~ 300nm.Be more preferably 50nm ~ 200nm.By making the median size of resin particle in above-mentioned scope, thus obtain ink the fixation performance of recording medium is improved, the trend that the blocking of strainer, record-header reduces.The median size of resin particle can measure in the same manner as the method described in the explanation of the median size of pigment.

The particle size distribution device that it is measuring principle that the median size of resin particle can utilize with laser diffraction and scattering method measures.As particle size distribution device, such as, can use in dynamic light scattering method is the size-grade distribution (such as, " MicrotracUPA " Nikkiso Company Limited system) of measuring principle.

As resin, preferably use second-order transition temperature is the resin of less than 25 DEG C, more preferably uses the resin of less than 10 DEG C, preferably uses the resin of less than 0 DEG C further.If the second-order transition temperature of resin is less than 25 DEG C, then not easily produce condensation product.In addition, even if when such as producing, also due to resinous high with the mobility of the condensation product of pigment, not easily there is the blocking of strainer, nozzle.

As resin, such as, acrylic resin, styrene-acrylic, fluorenes system resin, polyurethane series resin, polyolefin-based resins, modified rosin resin, terpenic series resin, polyester based resin, polyamide series resin, epoxy system resin, vinyl chloride-based resin, vinyl chloride vinyl acetate copolymer, ethane-acetic acid ethyenyl ester system resin etc. can be used.These resins can be used alone or two or more kinds may be used.In addition, as resin, the resin of emulsion form can be used, also can use water miscible resin.

The content of the resin converted with solids component, is preferably lower than 1 mass parts relative to pigment 1 mass parts contained in ink, is more preferably 0.1 mass parts ~ 0.5 mass parts.By making the content of content lower than pigment of resin, the pigment that is not easily subject to by membranization of the resin being attached to recording medium is hindered, so there is the trend that the adaptation of ink and recording medium improves.

The total of the content of resin and pigment, is preferably below 20 quality % relative to the total mass (100 quality %) of ink in solids component conversion.By making total amount be below 20 quality %, the generation of the condensation product in ink can be reduced.The total of the content of resin and pigment is more preferably 2 quality % ~ 15 quality %, more preferably 3 quality % ~ 15 quality %, is further preferably 3 quality % ~ 10 quality %.

Further, when arranging strainer in ink reservoir, relative to the bore of strainer, the median size of pigment is preferably less than 1/10th, is more preferably 1/1/500th ~ 20th, and more preferably 1/1/300th ~ 30th.In addition, if resin is particle shape, then the median size of pigment and resin is preferably less than 1/10th, is more preferably 1/1/500th ~ 20th, and more preferably 1/1/300th ~ 30th.By meeting this relation, become the blocking that strainer not easily occurs, and the huge oversize particle large on ejection impact can be caught with strainer.

< organic solvent >

Ink of the present embodiment contains organic solvent.As organic solvent, such as, can enumerate alkanediol class, polyalcohols, dibasic alcohol ethers, nitrogen-containing heterocycle compound, urea, urea derivative etc.These organic solvents can be used alone a kind, also can be mixed with two or more.

As alkanediol class, 1, the 2-alkanediol (such as, 1 of carbonatoms 4 ~ 8 can be enumerated, 2-butyleneglycol, 1,2-pentanediol, 1,2-hexylene glycol, 1,2-ethohexadiol etc.), 2-methyl isophthalic acid, ammediol, 2，2-dimethyl-1，3-propanediol and 2-ethyl-1,3-hexylene glycol.Above-mentioned alkanediol class possess can improve recording medium wettability, suppress ink in the function of the nozzle face dry solidification of record-header.During containing alkanediol class, its content relative to the total mass of ink, such as, can be 0.1 quality % ~ 20 quality %.In order to prevent wettability from excessively improving, being more preferably 0.5 quality % ~ 5 quality %, more preferably 0.5 quality % ~ 3 quality %, being more preferably 0.5 quality % ~ 2 quality %.

Also 1,2-alkanediol class of carbonatoms 5 or 6 is preferably used in above-mentioned alkanediol class.This is because these compounds improve ink to the perviousness of recording medium and wettability, but the capillary decline of ink is few.

As dibasic alcohol ethers, such as, alkylene glycol monoether, alkylene glycol diethers etc. can be enumerated.

As alkylene glycol monoether, such as, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethyleneglycol monopropylether, ethylene glycol monobutyl ether, ethylene glycol ether, ethyleneglycol monophenylether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, Diethylene Glycol monohexyl ether, triethylene glycol monomethyl ether, Triethylene glycol ethyl ether, triethylene glycol butyl ether, TEG monomethyl ether, TEG list ether, propylene glycol monomethyl ether, dihydroxypropane single-ether, dipropylene glycol monomethyl ether, DPE etc. can be enumerated.

As alkylene glycol diethers, such as, glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol ethylmethyl ether, dibutyl ethylene glycol ether, TRIGLYME, triethylene glycol diethyl ether, triethylene glycol dibutyl ether, triethylene glycol methyl-n-butyl ether, tetraethyleneglycol dimethyl ether, TEG diethyl ether, TEG dibutyl ether, Propylene Glycol Dimethyl Ether, propylene glycol diethyl ether, dimethyl ether, dipropylene glycol diethyl ether etc. can be enumerated.

Dibasic alcohol ethers can be used alone a kind or be mixed with two or more.Although because dibasic alcohol ethers improves ink to the perviousness of recording medium and wettability, the capillary decline of ink is few, so preferably use.During containing dibasic alcohol ethers, its content relative to ink total mass, such as, can be 0.05 quality % ~ 6 quality %.Further, the precipitation etc. of condensation product is considered and in order to suitably control wettability, content is preferably 0.2 quality % ~ 4 quality %.

< wetting Agent for Printing Inks >

As polyalcohols (removing above-mentioned alkanediol class), such as, ethylene glycol, propylene glycol, 1 can be enumerated, ammediol, 1,3-butyleneglycol, 1,3-pentanediol, BDO, 1,5-pentanediol, 1,6-hexylene glycol, 2,3-butanediol, 3-methyl isophthalic acid, 3-butyleneglycol, 2-methyl-2,4-pentanediol, 3-methyl isophthalic acid, 5-pentanediol, Diethylene Glycol, triethylene glycol, TEG, dipropylene glycol, TriMethylolPropane(TMP), glycerine etc.To reduce blocking at the nozzle face dry solidification of shower nozzle from ink can be suppressed or spray the viewpoint such as bad and consider, preferably use polyalcohols.During containing polyalcohols, its content relative to the total mass of ink, such as, can be more than 5 quality %, can also be 5 quality % ~ 30 quality %.

As nitrogen-containing heterocycle compound, such as, METHYLPYRROLIDONE, N-ethyl-2-pyrrolidone, NVP, 2-Pyrrolidone, N-butyl-2-Pyrrolidone, 5-N-methyl-2-2-pyrrolidone N-, glycolylurea etc. can be enumerated.As urea or urea derivative, urea, ethylidene-urea, tetramethyl-urea, thiocarbamide etc. can be enumerated.These can be used alone a kind or mix two or more use.From ink being suppressed at the nozzle face dry solidification of shower nozzle to reduce blocking or spray the viewpoint such as bad to consider in the same manner as polyalcohols, preferably can be used these.During containing these nitrogen-containing heterocycle compounds, its content relative to the total mass of ink, such as, can be 0.5 quality % ~ 10 quality %, be more preferably 1 quality % ~ 5 quality %.

Playing as in the polyalcohols of the function of wetting Agent for Printing Inks, nitrogen-containing heterocycle compound, urea and urea derivative, also by by glycerine be selected from other polyalcohols (remove in above-mentioned polyalcohols except glycerine), more than one and the use in nitrogen-containing heterocycle compound, urea, urea derivative, both moisture evaporations that the moisture of chronicity effectively can be suppressed to evaporate and produce rapidly at the wall of ink chamber.In this case, as preferred polyalcohols, there are propylene glycol, dipropylene glycol, 1,3 butylene glycol, Diethylene Glycol, triethylene glycol, TriMethylolPropane(TMP).In polyalcohols, from the consideration of viewpoint preventing precipitate, preferred propylene glycol, dipropylene glycol, Diethylene Glycol, 1,3 butylene glycol.In addition, as nitrogen-containing heterocycle compound, preferred pyrrolidinone derivatives, glycolylurea, more preferably 2-Pyrrolidone, glycolylurea.Further, as urea derivative, preferred ethylidene-urea, tetramethyl-urea, thiocarbamide.

Ink of the present embodiment contains and is selected from 1 of carbonatoms 4 ~ 8,2-alkanediol, 2-methyl isophthalic acid, ammediol, 2,2-dimethyl-1, ammediol and 2-ethyl-1, during more than one in 3-hexylene glycol, glycol ether, from the viewpoint of the precipitation preventing condensation product, preferably add and use glycerine and be selected from more than one the wetting Agent for Printing Inks in other polyalcohols (remove in above-mentioned polyalcohols and remove glycerine), nitrogen-containing heterocycle compound, urea, urea derivative.

< water >

Ink of the present embodiment can contain water.When ink of the present embodiment is water color ink (ink of the water containing more than 50 quality %), water is the main solvent of ink, is to evaporate by drying the composition dispersed.As water, such as, pure water and this water eliminating ionic impurity as possible of ultrapure water such as ion exchanged water, ultrafiltration water, reverse osmosis water and distilled water can be enumerated.In addition, carry out the water of sterilizing if use by the interpolation etc. of uviolizing or hydrogen peroxide, when can prevent from preserving ink for a long time, produce mould, bacterium.

< tensio-active agent >

Ink of the present embodiment can contain tensio-active agent.Tensio-active agent possesses reduction surface tension, improves the function with the wettability of recording medium.In tensio-active agent, such as, preferably alkyne diol system tensio-active agent, silicone based surfactants, fluorine system tensio-active agent and Voranol EP 2001 system tensio-active agent is used.

As alkyne diol system tensio-active agent, be not particularly limited, such as, Surfynol104 can be enumerated, 104E, 104H, 104A, 104BC, 104DPM, 104PA, 104PG-50, 104S, 420, 440, 465, 485, SE, SE-F, 504, 61, DF37, CT111, CT121, CT131, CT136, TG, GA, DF110D (is all trade(brand)name above, Air Productsand Chemicals.Inc. Inc.), Olfine B, Y, P, A, STG, SPC, E1004, E1010, PD-001, PD-002W, PD-003, PD-004, EXP.4001, EXP.4036, EXP.4051, AF-103, AF-104, AK-02, SK-14, AE-3 (is all trade(brand)name above, Xin chemical industrial company system), Acetylenol E00, E00P, E40, E100 (is all trade(brand)name above, Kawaken Fine Chemicals Co., Ltd. make).

As silicone based surfactants, be not particularly limited, preferably enumerate polysiloxane based compound.As this polysiloxane based compound, be not particularly limited, such as, can enumerate organic silicon modified by polyether oxygen alkane.As the commercially available product of this organic silicon modified by polyether oxygen alkane, such as, can enumerate BYK-306, BYK-307, BYK-333, BYK-341, BYK-345, BYK-346, BYK-348 (is trade(brand)name above, BYK Inc.), KF-351A, KF-352A, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-640, KF-642, KF-643, KF-6020, X-22-4515, KF-6011, KF-6012, KF-6015, KF-6017 (being trade(brand)name above, chemical industrial company of SHIN-ETSU HANTOTAI system).

As fluorine system tensio-active agent, preferred use fluorine richness polymkeric substance, as concrete example, MEGAFACE series (DIC Inc.), Zonyl series (DuPont Inc.), BYK-340 (BYK ChemieJapan Inc.) can be enumerated.

As Voranol EP 2001 system tensio-active agent, be not particularly limited, suitably can select according to object, such as, be preferably selected from by general formula C _nh _n+ ₁o (C _mh _2mo) _lin the compound that H (wherein, in this general formula, n represents the integer of more than 5, m and l represents the integer of more than 1) represents, specifically, C can be enumerated ₈h ₁₇o (C ₂h ₄o) ₂h, C ₁₀h ₂₁o (C ₂h ₄o) ₄h, C ₁₂h ₂₅o (C ₂h ₄o) ₃h, C ₁₂h ₂₅o (C ₂h ₄o) ₇h, C ₁₂h ₂₅o (C ₂h ₄o) ₁₂h, C ₁₃h ₂₇o (C ₂h ₄o) ₃h, C ₁₃h ₂₇o (C ₂h ₄o) ₅h, C ₁₃h ₂₇o (C ₂h ₄o) ₇h, C ₁₃h ₂₇o (C ₂h ₄o) ₉h, C ₁₃h ₂₇o (C ₂h ₄o) ₁₂h, C ₁₃h ₂₇o (C ₂h ₄o) ₂₀h, C ₁₃h ₂₇o (C ₂h ₄o) ₃₀h, C ₁₄h ₂₉o (C ₂h ₄o) ₃₀h etc.They can be used alone or two or more kinds may be used, and the latter effectively, is conducive to improving the solvability to this ink when not being soluble in ink for independent a kind.As this Voranol EP 2001 system tensio-active agent, commercially available product can be used, as this commercially available product, such as, BT series (Nikko Chemicals Inc.), SOFTANOL series (Japanese catalyst Inc.), DISPANOL (Nof Corp.'s system) etc. can be enumerated.

In above-mentioned tensio-active agent, consider wettability, capillary reduction ability, preferred silicone based surfactants, alkyne diol system tensio-active agent or Voranol EP 2001 system tensio-active agent, more preferably alkyne diol system tensio-active agent or Voranol EP 2001 system tensio-active agent.

Other > of <

For the object improving ink performance, ink of the present embodiment can contain wax particle (such as polyolefin-wax, paraffin etc.), zwitterionic compound (such as trimethyl-glycine based compound, amino acid and derivative thereof etc.), carbohydrate (such as, glucose, seminose, fructose, ribose, wood sugar, pectinose, semi-lactosi, glyconic acid, Sorbitol Powder, maltose, cellobiose, lactose, sucrose, trehalose, trisaccharide maltose, reduction β-amylose compound etc.), glycitols, hyaluronic acids, urea class, sanitas mould inhibitor (such as, Sodium Benzoate, sodium pentachlorophenate, 2-mercaptopyridine-1-oxide sodium salt, sodium sorbate, Sodium dehydroacetate, 1,2-bisbenzothiazole quinoline-3-ketone etc.), pH adjusting agent (such as, potassium primary phosphate, Sodium phosphate dibasic, sodium hydroxide, lithium hydroxide, potassium hydroxide, ammonia, diethanolamine, trolamine, tri-isopropanolamine, salt of wormwood, sodium carbonate, sodium bicarbonate etc.), sequestrant (such as, ethylenediamine tetraacetic acid (EDTA) and its esters (ethylenediamine tetraacetic acid (EDTA) disodium dihydrogen salt etc.) etc.

1.2. physical property

From the viewpoint of record quality and the reliability balancing as the ink composite of ink-vapor recording, ink of the present embodiment be preferably 20mN/m ~ 50mN/m the surface tension of 20 DEG C, be more preferably 25mN/m ~ 35mN/m, more preferably 30mN/m ~ 35mN/m.In addition, by making the surface tension of ink in above-mentioned scope, ink can be kept reducing ink while the wettability of recording medium to the wettability of the inner side of wall 370.Should illustrate, surface tension by using automatic surface tensiometer CBVP-Z (consonance interface science Inc.), can soak platinum plate to measure with ink under the environment of 20 DEG C.

From the viewpoint of record quality and the reliability balancing as the ink composite of ink-vapor recording, ink of the present embodiment is preferably 2mPas ~ 15mPas the viscosity of 20 DEG C, is more preferably 2mPas ~ 10mPas.Should illustrate, viscosity can by using test for viscoelastic machine MCR-300 (Pysica Inc.), under the environment of 20 DEG C, shearing rate (ShearRate) risen to 10 ~ 1000 and measure, viscosity number when shearing rate can be adopted to be 200.

When ink of the present embodiment contains calcium ion and magnesium ion, the total of the concentration of both is preferably below 30ppm.By being below 30ppm, the cohesion at boundary member A described later of pigment and resin can be reduced.The total of above-mentioned ionic concn is more preferably below 15ppm.Above-mentioned ionic concn can use ICP emission spectrophotometer to measure, and as said apparatus, such as, can enumerate SPS5100 (SII NanoTechnology system).

2. ink composite is to the characteristic of ink reservoir

2.1. the contact angle of ink chamber and ink composite

< static contact angle >

In ink reservoir 30 described later, at the boundary member A that the inner side (that is, ink chamber 340 in can with the part of ink contact) of the wall 370 dividing ink chamber 340 contacts with the liquid-gas interface of the liquid level LF of ink, the film of easy formation ink.At this, in order to the image making ink form good image quality, ink need have certain wettability, makes ink have wettability by the organic solvent containing above-mentioned tensio-active agent, a part as wetting agent.Owing to using the ink like this with wettability, so ink makes parts wetting and forms film.When particularly forming the wettability height between the parts of inner side of wall 370 and ink composite, ink easily make the inner side of wall 370 wetting and on, form the meniscus of concavity thus.

Specifically, as shown in the partial enlarged drawing in Fig. 4, at the boundary member A that the inner side of wall 370 contacts with the liquid level LF of ink, define the meniscus of concavity.At the meniscus portion of concavity, because the liquid-gas interface of ink is short to the distance a of the inner side of wall 370, so easily form film because of the drying of ink.Therefore, it is more than 10 ° that the present inventor finds by the static contact angle of the parts and ink composite that make the inner side of formation wall 370, thus is not easy at boundary member A the film forming ink.Thereby, it is possible to bad phenomenon such as the blockings of minimizing shower nozzle, strainer.

The parts of inner side and the static contact angle CA of ink composite that form wall 370 are required to be more than 10 °, are preferably more than 20 °, are more preferably more than 30 °, more preferably 20 ° ~ 60 °, are particularly preferably 30 ° ~ 60 °.By making static contact angle CA be more than 10 °, there is the trend reducing further and form the film of ink at boundary member A.In addition, by making static contact angle CA be less than 60 °, thus the wettability of ink to multiple recording mediums such as the nozzles of paper, plastics, shower nozzle is made to become good, therefore, it is possible to record the image of excellent image quality.In addition, excellent ejection stability can be realized.

The change > of the static contact angle that < evaporates with moisture

The present inventor finds that the static contact angle CA of parts and ink composite in the inner side forming wall 370 is for more than 10 ° and the wettability of ink composite in not labile situation, sometimes can reduce the film at boundary member A formation ink further before and after the evaporation of the moisture contained by ink composite.

Namely, along with the evaporation of the moisture contained by the ink composite being present in boundary member A, the concentration being present in the wetting agent (such as, above-mentioned tensio-active agent, alkanediol class, polyalcohols, dibasic alcohol ethers etc.) contained by ink composite of boundary member A rises.So, the wettability being positioned at the ink composite (moisture evaporation after ink composite) of boundary member A evaporate with moisture before ink composite wettability compared with will improve.Now, if the wettability of ink composite after moisture evaporation evaporate with moisture before ink composite wettability compared with become too high, then the easy film forming ink at boundary member A sometimes, the amount increase of the condensation product in ink.

Therefore, present inventor has performed further investigation, found that the ink composite before being evaporated by moisture is set to CA with the static contact angle of the parts of the inner side of formation wall 370 ₀, moisture is evaporated after ink composite be set to CA with the static contact angle of parts of the inner side forming wall 370 ₁time, by meeting following condition (1) and (2), the film that can reduce ink is further formed at boundary member A.

Condition (1): 10 °≤CA ₀and 10 °≤CA ₁

Condition (2): 0 °≤CA ₀-CA ₁≤ 5 °

Static contact angle CA before moisture evaporation ₀identical with the static contact angle CA in above-mentioned " the contact angle < static contact angle > of 2.1. ink chamber and ink composite ".In addition, CA is tried to achieve ₁time " moisture evaporation after ink composite " refer to the total mass (100 quality %) of the ink composite before relative to moisture evaporation, evaporate the ink composite during moisture of 1 quality %.

In addition, more preferably CA ₀and CA ₁meet following condition (1-1), preferably satisfy condition (1-2) further.Thus, at boundary member A, more not easily form the film of ink.

Condition (1-1): 20 °≤CA ₀and 20 °≤CA ₁

Condition (1-2): 30 °≤CA ₀and 30 °≤CA ₁

In addition, the variable quantity of the static contact angle before and after the moisture evaporation on boundary member A is little, more not easily forms the film of ink, therefore more preferably meet following condition (2-1).

Condition (2-1): 0 °≤CA ₀-CA ₁≤ 3 °

Should illustrate, consider moisture retention, perviousness, prevent condensation product generation etc., the content of organic solvent contained in ink composite is relative to the total mass (100 quality %) of ink composite, be preferably 5 quality % ~ 40 quality %, more preferably 5 quality % ~ 30 quality %, are further preferably 10 quality % ~ 30 quality %.In addition according to identical reason, the content of organic solvent relative to the total of the content of pigment and resin, in quality criteria preferably greater than 1 times and be less than 10 times, more preferably 2 times ~ 6 times.

Static contact angle in the present invention measures based on the sessile drop method of JIS R 3257 (base plate glass wettability of the surface test method), but the base plate glass in the method is changed to the parts (making tabular) of the inner side forming wall, pure water is changed to ink composite.Specifically, automatic contact angle determination device OCAH200 (ProductName, Data Physics Inc.) etc. can be used, utilize sessile drop method (Cecil Drop Method) to carry out.

< receding contact angle >

Figure 13 is the figure schematically showing the form that liquid level LF that ink is fed into record-header 17 and ink declines.As shown in figure 13, the liquid level of ink drops to LF from LF ₁time, drop to boundary member A at the meniscus of the concavity of boundary member A formation ₁.Now, preferably boundary member A and boundary member A is being present in ₁between wall not residual ink.Namely, if receding contact angle described later is large in dynamic contact angle, then at the wall exposed from the liquid level of ink because of the ink consumption in ink chamber 340 (that is, being present in the wall between boundary member A in Figure 13 and boundary member A1) not easily residual ink.Thus, not easily form the film of ink at wall, therefore, it is possible to reduce the generation of precipitate.

Specifically, the parts of inner side and the receding contact angle CA of ink composite of wall 370 (supporter 380) is formed _rbe preferably more than 5 °, be more preferably 5 ° ~ 50 °, more preferably 10 ° ~ 40 °.By making receding contact angle CA _rbe more than 5 °, obtain the trend wall that exposes at the liquid level because of ink consumption from ink not easily retaining ink.In addition, by making receding contact angle CA _rbe less than 50 °, thus the wettability of ink to the multiple recording medium such as paper, plastics become good, therefore, it is possible to record the image of excellent image quality.

Receding contact angle in the present invention can utilize diffusion shrinkage method to measure, specifically, refer to the following contact angle measured: use automatic contact angle determination device OCAH200 (ProductName, Data Physics Inc.) etc., the drop of ink composite is attached on the parts (making tabular) of the inner side forming wall, measures when this droplet retracts.

As the measuring method of receding contact angle, following method can be enumerated.Use automatic contact angle determination device OCAH200 (ProductName, Data Physics Inc.), under the condition of 20 DEG C, make the drop 8.5 μ l of ink be attached to the above-mentioned " static contact angle CA (CA before the evaporation of < moisture ₀) > " and on the flat sample made, with VELOCITY DIFFUSION 5 second of 8.5 μ l/sec, shrank for 5 seconds with the speed of 8.5 μ l/sec thereafter, measure contact angle (receding contact angle CA now _r).Should illustrate, mensuration measures, using the mean value of 5 as receding contact angle with 0.1 second interval during starting 2.0 ~ 2.4 seconds after shrinking.

The capillary change > that < evaporates with printing ink solvent composition

If the capillary change of the adjoint printing ink solvent composition evaporation of ink composite of the present invention meets following condition, then from the viewpoint of preventing the precipitation of condensation product preferred.Should illustrate, time many from the steam output of initial ink composition, the possibility that there occurs evaporation due to the solvent composition beyond water is also high, is therefore expressed as " printing ink solvent composition ".

In addition, the γ in following formula _m0, γ _m1, γ _m2, γ _m3before representing the evaporation of printing ink solvent composition respectively, printing ink solvent composition evaporates the surface tension of the ink composite after 3.5 quality %, 7 quality %, 12 quality %." ink composite after the evaporation of printing ink solvent composition " refers to the total mass (100 quality %) of the ink composite before relative to the evaporation of printing ink solvent composition, ink composite during printing ink solvent composition evaporation definite quality %.

The ink composite of present embodiment preferably meets more than 2 in following condition (3-1), (3-2), (3-3) or meets the ink composite of following condition (4-1) ~ (4-3) simultaneously.In addition, preferably meet following condition (3-1) ~ (3-3) simultaneously.

Condition (3-1): γ _m1-γ _m0> 0 (mN/m)

Condition (3-2): γ _m2-γ _m0> 0 (mN/m)

Condition (3-3): γ _m3-γ _m0> 0 (mN/m)

Condition (4-1): γ _m1-γ _m0>-0.05 (mN/m)

Condition (4-2): γ _m2-γ _m0>-0.05 (mN/m)

Condition (4-3): γ _m3-γ _m0>-0.05 (mN/m)

If the ink composite that during evaporation of printing ink solvent composition, surface tension does not decline or slippage is few, then become the ink composite with long-term storing stability.The ink composite meeting above-mentioned condition can by the selection of solvent of adjustment described in above-mentioned < wetting Agent for Printing Inks > project, the addition of solvent and obtaining.

2.2. the contact angle of supporter and ink composite

< static contact angle >

According to the viewpoint same with the explanation in above-mentioned " the contact angle < static contact angle > of 2.1. ink chamber and ink composite ", if form the parts of supporter 380 (aftermentioned) and the static contact angle CA of ink composite _sgreatly, then the film of ink is not easily formed at supporter 380.Specifically, the parts of supporter 380 and the static contact angle CA of ink composite is formed _sbe preferably more than 10 °, be more preferably more than 20 °, more preferably more than 30 °.By making static contact angle CA _sit is more than 10 °, even if use the ink containing wetting agent also can reduce the formation of film at supporter 380 of ink.

The change > of the static contact angle that < evaporates with moisture

According to the viewpoint same with the explanation in above-mentioned " the change > of the static contact angle that the contact angle < of 2.1. ink chamber and ink composite evaporates with moisture ", at the formation parts of supporter 380 and the static contact angle CA of ink composite _s0for more than 10 ° and before and after the moisture evaporation contained by ink composite ink composite the not labile situation of wettability under, have the trend of film in the formation of supporter 380 reducing further ink.

Specifically, the ink composite before being evaporated by moisture is set to CA with the static contact angle of the parts forming supporter 380 _s0, moisture is evaporated after ink composite be set to CA with the static contact angle of parts forming supporter 380 _s1time, by meeting following condition (5) and (6), the formation of film at supporter 380 of ink can be reduced more well.

Condition (5): 10 °≤CA _s0and 10 °≤CA _s1

Condition (6): 0 °≤CA _s0-CA _s1≤ 5 °

Static contact angle CA before moisture evaporation _s0with the static contact angle CA in above-mentioned " the contact angle < static contact angle > of 2.2. supporter and ink composite " _sidentical.In addition, CA is tried to achieve _s1time " moisture evaporation after ink composite " refer to the total mass (100 quality %) of the ink composite before relative to moisture evaporation, evaporate the ink composite during moisture of 1 quality %.

In addition, more preferably CA _s0and CA _s1meet following condition (5-1), preferably satisfy condition (5-2) further.Thus, the film of ink is not easily formed further at supporter 380.

Condition (5-1): 20 °≤CA _s0and 20 °≤CA _s1

Condition (5-2): 30 °≤CA _s0and 30 °≤CA _s1

In addition, in order to not easily form the film of ink further at supporter 380, following condition (6-1) is more preferably met.

Condition (6-1): 0 °≤CA _s0-CA _s1≤ 3 °

< receding contact angle >

According to the viewpoint same with the explanation in above-mentioned " the contact angle < receding contact angle > of 2.1. ink chamber and ink composite ", if form the parts of supporter 380 and the receding contact angle CA of ink composite _rSgreatly, then the film of ink is not easily formed at supporter 380.

Specifically, the parts of supporter 380 and the receding contact angle CA of ink composite is formed _rSbe preferably more than 5 °, be more preferably 5 ° ~ 50 °, more preferably 10 ~ 40 °.By making receding contact angle CA _rSbe more than 5 °, obtain in the consumption because of ink the trend of not easily residual ink from the supporter 380 that the liquid level of ink exposes.In addition, by making receding contact angle CA _rSbe less than 50 °, thus the wettability of ink to the multiple recording medium such as paper, plastics become good, therefore, it is possible to record the image of excellent image quality.

3. the filling mode of ink composite

Above-mentioned ink composite is designed to based on the structure of recording unit, ink reservoir, character the characteristic that meets the demands, and coordinates carry out produce and market with specific recording unit and ink reservoir.In other words, because the ink composite of present embodiment is filled in aftermentioned specific ink container, so can not be the state being pre-charged with ink reservoir, but collecting be to the state in other host body.As the example of other host body, ink bottle as shown in Figure 14 can be enumerated.

In addition, for the above reasons, can by the ink composite of present embodiment and ink reservoir described later (such as, not having the state of extending oil ink composition) as 1 combination.In addition, also can be the state be filled into by the ink composite of present embodiment in ink reservoir described later.

4. ink reservoir

A mode of the ink reservoir that the present invention relates to is connected with recording unit to use, there is the ink chamber and ink inlet to be opened/closed that can supplement above-mentioned ink composite, above-mentioned ink chamber can be communicated with extraneous air (outer gas), and above-mentioned ink composite is more than 10 ° with forming the static contact angle dividing the parts of the inner side of the wall of above-mentioned ink chamber.

Below, as the recording unit being equipped with ink reservoir of the present embodiment, enumerating ink-jet recording device is example, is described in detail with reference to accompanying drawing.Should illustrate, in order to the structure of easy understand ink-jet recording device of the present embodiment, sometimes suitably change size.

Fig. 1 is the stereographic map schematically showing ink-jet recording device 1.Specifically, Fig. 1 (A) represents that ink reservoir 30 (with reference to Fig. 1 (B)) is by the figure of collecting to the state in container accepting box 51.Fig. 1 (B) is the figure representing the state of taking off container accepting box 51.In Fig. 1, be decorated with mutually orthogonal XYZ axle.The XYZ axle of Fig. 1 is corresponding with the XYZ axle of other figure, provides XYZ axle as required to figure shown below.In present embodiment, X-axis corresponds to the travel direction of balladeur train 16, and Y-axis corresponds to the direction arranged side by side of multiple ink reservoir 30 under using state.Z axis corresponds to vertical direction (gravity direction).

Fig. 2 is the stereographic map that the record cell 12 schematically showing ink-jet recording device 1 is received to the state in record cell accepting box 10.Specifically, the figure of Fig. 2 (A) to be the figure of the using state (aftermentioned) representing ink-jet recording device 1, Fig. 2 (B) be injection state (aftermentioned) representing ink-jet recording device 1.

As depicted in figs. 1 and 2, ink-jet recording device 1 has the record cell 12 of document image on the recording medium and supplies the ink accepting unit 50 of ink via inking pipe 24 to the secondary tank 20 of record cell 12.

4.1. record cell

Record cell 12 have ejection ink composite (following, also referred to as " ink ") drop and on the recording medium the ink that supply via inking pipe of the record-header 17 of document image, temporary reservoir secondary tank 20, carry secondary tank 20 and record-header 17 and can at the ejection port 14 of the paper feed ports 13 of the balladeur train 16 of X-direction back and forth movement, supply recording medium and discharge recording medium.Record cell 12 is housed in record cell accepting box 10 as shown in Figure 2.

Record-header 17 has the nozzle face (not shown) being located at the position opposed with the record surface of recording medium, from the ink of multiple nozzles (not shown) ejection in droplet-like being located at this nozzle face, makes it be attached to the record surface of recording medium.

As ink-jet recording, there are the following various recording modes illustrated, can make in any way.Such as, nozzle can be used in and be arranged on nozzle front accelerating electrode between apply highfield, go out the ink of droplet-like from nozzle continuous spraying, during the drop of ink flies between deflection electrode, printing information signal is carried out for deflection electrode the mode (electrostatic attraction mode) that the mode that records or corresponding printing information signal do not make the drop deflection of ink and make it spray; By applying pressure with pony pump to ink liquid, making nozzle mechanical vibration with quartz oscillator etc., forcing the mode of the drop of ejection ink; Give pressure and printing information signal with piezoelectric element to ink simultaneously, make the mode (piezo electrics) of the drop ejection record of ink; According to printing information signal microelectrode, heat ink is foamed, make droplets of ink spray the mode (thermojet mode) etc. of record.

Secondary tank 20 is connected with ink reservoir 30 via inking pipe 24, and temporary reservoir is housed in the ink in ink reservoir 30, is supplied to record-header.In the example in fig 1, secondary tank 20 is in the mode corresponding with each color ink being housed in ink reservoir 30, and correspondence is often planted color and is provided with 4 secondary tank 20Bk, 20Cn, 20Ma, 20Yw.As the material forming secondary tank 20, be not particularly limited, such as, can enumerate the synthetic resins such as polystyrene, polyethylene.In the present embodiment, enumerating the ink-jet recording device 1 with secondary tank 20 for example is described, but is not limited thereto.Such as, also can be not there is secondary tank 20 and make the mode that record-header 17 is directly connected via inking pipe 24 with ink reservoir 30.

Balladeur train 16 is equipped with record-header 17 and secondary tank 20, utilizes the balladeur train travel mechanism (not shown) be made up of motor, Timing Belt etc., along X-axis back and forth movement.With the movement of such balladeur train 16, record-header 17, also along X-direction back and forth movement, is therefore undertaken by spraying ink with balladeur train 16 moving recording head 17 record of recording medium at the image of X-direction.In the present embodiment, the ink-jet recording device enumerating so-called serial head type is that example is described, but is not limited thereto, and the ink reservoir that the present invention relates to also is applicable to the ink-jet recording device of so-called line head type.

Ejection port 14 is located at before ink-jet recording device 1.In addition, paper feed ports 13 is located at the rear side of ink-jet recording device 1.Performing operation of recording by installing recording medium in paper feed ports 13, supplying recording medium from paper feed ports 13, after internal record image etc., discharge printing from ejection port 14.The conveying of recording medium can utilize to be carried out at the paper advance mechanism (not shown) of Y direction paper feeding.Like this, paper advance mechanism drives recording medium to move, and the movement of incident record medium, record-header 17 sprays ink, carries out thus the record of recording medium along the image of Y direction.

Record cell 12 has the control part (not shown) of the action of the entirety controlling ink-jet recording device 1.Control part can possess such as CPU, ROM and RAM.Control part controls to make the action of balladeur train 16 back and forth movement, the action of conveying recording medium, the action spraying ink from record-header 17, the action etc. of supply ink is whole from action from ink reservoir 30 to secondary tank 20 (record-header 17).

4.2. ink accepting unit and inking pipe

Ink accepting unit 50 has the container accepting box 51 of multiple ink reservoir 30 and collecting ink reservoir 30.Ink accepting unit 50 is located at the outside of record cell accepting box 10.Container accepting box 51 can take off from the side of record cell accepting box 10 under the state keeping ink reservoir 30.In addition, container accepting box 51 possesses upper surface shell 54 to be opened/closed.

When observing ink-jet recording device 1 from front (from-Y direction to+Y direction), ink accepting unit 50 and the left surface of record cell accepting box 10 adjoin (record cell accepting box 10-X-direction side) arrange.Like this, by ink accepting unit 50 being located at the outside of record cell accepting box 10, compared with being located at the situation of the inside of accepting box 10 together with same record cell 12, the restriction in space can be reduced.Therefore, the ink reservoir 30 of continuous supply-type more can be set.Ink reservoir 30 can accommodate the ink of more compared with secondary tank 20.

Inking pipe 24 and multiple ink reservoir 30 each correspondingly to arrange, each ink reservoir 30 is connected with each secondary tank 20 (record-header 17), forms the part of the inking in each ink reservoir 30 to the ink flow path of each secondary tank 20 (record-header 17).As inking pipe 24, such as, can use the parts (such as rubber, elastomerics etc.) of the flexibility of tubulose.When spraying ink from record-header 17 and consume the ink of secondary tank 20, the ink in ink reservoir 30 is fed into secondary tank 20 via inking pipe 24.Therefore, ink-jet recording device 1 can continue record for a long time.

Strainer (not shown) can be set in inking pipe 24.Be located at the condensation product produced in the filters trap ink chamber 340 in inking pipe 24, suppress condensation product to flow into record-header 17.

Each of the composition of ink reservoir 30 and ink, color arranges multiple accordingly.In the example of Fig. 1 and Fig. 2, be provided with 4 ink reservoirs 30 accordingly with above-mentioned secondary tank 20Bk, 20Cn, 20Ma, 20Yw.In the present embodiment, each color is provided with 4 ink reservoirs 30, but also by being separated by the inside wall of 1 ink reservoir, can be arranged to multiple ink resettlement section.Ink can be filled in ink reservoir 30.Below, the formation of ink reservoir 30 is described in detail.

4.2.1. the formation of ink reservoir

The posture > of < ink reservoir

When the formation of ink reservoir 30 is specifically described, first, the posture of ink reservoir 30 is described.

The posture of ink reservoir 30 comprises using state and injection state." using state " is the posture of the ink reservoir 30 when pointing to record-header 17 (secondary tank 20) supply ink.When the posture that can supply exists multiple, if when posture when there is the supply ink of recommendation in service manual, explanatory view, using this posture as using state, when there are the parts of fixing ink reservoir 30 in ink-jet recording device, the posture of the ink reservoir 30 time fixing is as using state.Fig. 2 (A) is the figure of an example of the using state representing ink reservoir 30.Though do not illustrate in Fig. 2 (A), under the using state of ink reservoir 30, ink inlet 304 is in the face of the side of record cell accepting box 10.In other words, the axle of ink inlet 304 (aftermentioned) is towards horizontal direction (specifically referring to+X-direction).In addition, now, ink inlet 304 is clogged by latch 302 (aftermentioned).

" injection state " is the posture of the ink reservoir 30 when pointing to (ink chamber 340) injection in ink reservoir 30 (also referred to as filling or supplementing) ink.Fig. 2 (B) is the figure of the injection state representing ink reservoir 30.When injecting ink in ink reservoir 30, user takes off container accepting box 51 from the side of record cell accepting box 10, opens upper surface shell 54, makes ink accepting container 30 become the injection state shown in Fig. 2 (B).Under injection state, the axle of ink inlet 304 is towards vertical direction (specifically referring to+Z-direction).User, after making ink accepting container 30 become the injection state shown in Fig. 2 (B), takes off the latch 302 clogging ink inlet 304, injects ink.After injection ink terminates, user clogs ink inlet 304 by latch 302.Thereafter, container accepting box 51 is arranged on the side of record cell accepting box 10 by user, turns back to the using state of Fig. 2 (A).

< state recognition portion >

Under the using state shown in Fig. 2 (A), the 3rd side 372C in the wall 370 (aftermentioned) of the ink reception room 340 in division ink reservoir 30 is from exterior visual.Under the using state shown in Fig. 2 (A), the 3rd side 372C is vertical with (parallel plane with XY) installation surface of level.On the other hand, under the injection state shown in Fig. 2 (B), the 3rd side 372C is parallel with installation surface.That is, under injection state, the 3rd side 372C forms the bottom surface of ink reservoir 30 (ink chamber 340).

As shown in Fig. 2 (A), be provided with the 1st state recognition portion LB1 (also referred to as " supplement and start identification part LB1 ") at the 3rd side 372C.1st state recognition portion LB1 is for allowing user identify whether in a state of use as supplementing the 1st state of ink to ink reservoir 30 inside.Specifically, the 1st state recognition portion LB1 situation that the ink level of inside reaches the 1st height in order to identify inner ink to be consumed in a state of use is arranged.It is (parallel plane with XY) straight line LM1 (also referred to as " the 1st state display line LM1 " or " supplement and start display line LM1 ") of level in a state of use that 1st state recognition portion LB1 comprises.Ink, when ink level reaches near the 1st state display line LM1, adds in ink reservoir 30 (ink chamber 340) by user.

Under the injection state shown in Fig. 2 (B), if user opens upper surface shell 54, then divide the upper surface 371 (aftermentioned) different from the 3rd side 372C in the wall 370 (aftermentioned) of ink reception room 340, can observe from outside.Upper surface 371 is the wall vertical with the parallel plane installation surface of same XY under injection state.On the other hand, under the using state shown in Fig. 2 (A), upper surface 371 forms the upper surface of ink chamber 340.

The 2nd state recognition portion LB2 (also referred to as " supplement and terminate identification part LB2 ") is provided with at upper surface 371.2nd state recognition portion LB2 is for allowing user identify whether under injection state as the ink of the inside to ink reservoir 30 injects the 2nd state terminated.Specifically, the 2nd state recognition portion LB2 situation that the ink level of inside reaches the 2nd height in order to identify ink to be added inside under injection state is arranged.2nd state recognition portion LB2 is the straight line LM2 (also referred to as " the 2nd state display line LM2 " or " supplement and terminate display line LM2 ") of level under being included in injection state.User, when ink level reaches near the 2nd state display line LM2, stops supplementing of ink.

In the present embodiment, as shown in Fig. 2 (A) and Fig. 2 (B), show the situation that the posture of ink reservoir 30 is different under using state and injection state, but be not limited thereto, such as, also can make the posture of ink reservoir 30 under using state with injection state for identical.Thereby, it is possible to suppress the generation of the condensation product caused by ink further.Namely, make the posture of ink reservoir 30 when using state and injection state change, contacted position (such as, dividing a part for wall 370, the part etc. for supporter described later 380 of ink chamber 340) is not had before the ink of ink chamber 340 is attached to sometimes.When being attached to the ink of this position and atmosphere and forming liquid-gas interface, become condensation product Producing reason.On the other hand, by making the posture of ink reservoir 30 not change under using state and injection state, the position that before ink is re-attached to, ink does not contact can be reduced, have the trend of the generation of the condensation product that can suppress in ink chamber 340.

Make the posture of ink reservoir 30 under using state with injection state for time identical, such as, use the posture of the ink reservoir 30 shown in Fig. 2 (A) as using state and the state of injection.Now, under injection state, the position of oil-proof ink arranges ink inlet 304, such as above ink reservoir 30 (such as, the upper surface 371 of wall 370 described later) ink inlet 304 along vertical direction towards upper shed is set, then can prevent the leakage of ink when injecting.

The circulation path > of < ink and air

Next, the feed path of the ink in ink-jet recording device 1 of the present embodiment is described.Fig. 3 conceptually represents the figure from atmospheric air open port 317 to the path of ink leading-out portion 306.

Path (stream) from atmospheric air open port 317 to ink leading-out portion 306 is roughly divided into atmosphere opening stream 300 and ink chamber 340.Atmosphere opening stream 300 is made up of the 1st stream 310, wind box 330 and the ink chamber's access 350 as the 2nd stream successively from upstream.As the air induction port 352 of one end of atmosphere opening stream 300 at ink chamber 340 opening, as atmospheric air open port 317 opening towards the outside of the other end.That is, atmospheric air open port 317 is communicated with air.In a state of use, at ink chamber's access 350 (specifically, refer near air induction port 352) form the liquid level directly contacted with air, by importing air (bubble) from air induction port 352 in the ink of ink chamber 340 thus air being imported ink chamber 340.

As the air introduction mouth 318 (also referred to as " wind box opening 318 ") of one end of the 1st stream 310 at wind box 330 opening, as atmospheric air open port 317 opening towards the outside of the other end, thus by wind box 330 and ft connection.1st stream 310 has connection stream 320, gas-liquid separation chamber 312 and is communicated with stream 314.The one end being communicated with stream 320 is connected with atmospheric air open port 317, and the other end is connected with gas-liquid separation chamber 312.The part being communicated with stream 320 is elongated stream, suppresses the moisture being stored in the ink of ink chamber 340 to be evaporated to outside because of diffusion from atmosphere opening stream 300.Sealing element (membrane element) 316 is configured with in the mode blocking stream between the upstream toward downstream from gas-liquid separation chamber 312.Sealing parts 316 have makes gas permeation and the character not easily making penetration by liquid.Sealing element 316 can use such as GORE-TEX (registered trademark) etc.By sealing parts 316 are configured in the mode of the midway blocking the path (stream) from air introduction mouth 318 to atmospheric air open port 317, thus suppress to flow into upstream side from the ink of ink chamber 340 adverse current from sealing element 316.Sealing parts 316 play function as gas-liquid separation membrane.

Be communicated with stream 314 gas-liquid separation chamber 312 is communicated with wind box 330.At this, the one end being communicated with stream 314 is air introduction mouth 318.Wind box 330 is larger than the flow path cross sectional area of ink chamber access 350, has the volume of regulation.Thereby, it is possible to store the ink come from ink chamber 340 adverse current, ink is suppressed to flow into the upstream side of wind box 330.

By making the wind box side opening 351 of one end of ink chamber's access 350 at wind box 330 opening, making the air induction port 352 of the other end at ink chamber 340 opening, thus wind box 330 is communicated with ink chamber 340.In addition, the little degree to meniscus (liquid level bridge formation) can be formed of ink chamber's access 350 preferred flow path sectional area.

Ink is accommodated by ink chamber 340, makes ink flow to secondary tank 20 (with reference to Fig. 1) from the ink export 349 of ink leading-out portion 306 via inking pipe 24.

Next, Fig. 4 is used to be described from ink reservoir 30 to the principle of secondary tank 20 (record-header 17) supply ink.Fig. 4 is the figure of a part for the internal structure schematically showing ink-jet recording device 1.The ink reservoir 30 of present embodiment utilizes the principle of geneva bottle by inking to record cell 12.

In the example in fig. 4, ink-jet recording device 1 is arranged on horizontal plane sf (XY plane).The ink leading-out portion 306 of ink reservoir 30 is connected via inking pipe 24 with the ink acceptance division 202 of secondary tank 20.

In the example in fig. 4, secondary tank 20 possesses ink containment room 204, ink flowing road 208 and strainer 206.The inking pin 16a of balladeur train 16 inserts ink flowing road 208.Strainer 206 catches the condensation product be mixed into ink, prevents condensation product from flowing into record-header 17.The ink of ink containment room 204 relies on the attraction from record-header 17, circulates, be supplied to record-header 17 at ink flowing road 208, inking pin 16a.Be supplied to the ink of record-header 17 via nozzle (not shown) externally (recording medium) ejection.

From ink inlet 304 to after ink injects in ink chamber 340 under injection state (with reference to Fig. 2 (B)), with latch 302 seal ink inlet 304 be set to using state time, air expansion in ink chamber 340, ink chamber 340 forms negative pressure.Further, the ink of ink chamber 340 is recorded 17 attraction, thus makes ink chamber 340 maintain negative pressure.

Air induction port 352 in a state of use, is positioned at the downside of the 1st state display line LM1.In the example in fig. 4, the bottom surface 373 of ink chamber 340 is under the using state that air induction port 352 is formed in the wall 370 dividing ink chamber 340.Like this, even if the ink of ink chamber 340 is consumed and the liquid level of ink chamber 340 reduces, liquid level (atmosphere liquid level) LA directly contacted with air also (ink level arrives the time of the degree of the 1st state display line LM1) can maintain certain height for a long time.In addition, in a state of use, air induction port 352 is configured in the position lower than record-header 17.Thus, head difference d1 is produced.Should illustrate, in a state of use, the head difference d1 under the state forming the atmosphere liquid level LA of meniscus near the air induction port 352 of ink chamber's access 350 is called " steady state head difference d1 ".

The ink of ink containment room 204 by being recorded 17 attraction, thus makes ink containment room 204 become more than the negative pressure of regulation.If ink containment room 204 becomes more than the negative pressure of regulation, then the ink of ink chamber 340 is fed into ink containment room 204 via inking pipe 24.That is, ink containment room 204 is charged to from the ink of the amount of record-header 17 outflow from ink chamber 340 automatic makeup.In other words, by making the magnetism (negative pressure) from record cell 12 side larger than the head difference d1 produced in the difference of altitude of vertical direction by atmosphere liquid level LA and record-header 17 (specifically referring to nozzle), thus ink is supplied to ink containment room 204 from ink chamber 340.

If the ink of ink chamber 340 is consumed, then the air of wind box 330 imports to ink chamber 340 via ink chamber's access 350 in the mode of bubble G.The liquid level LF (the liquid level LF of ink) of ink chamber 340 declines thus.On the other hand, because the height of the atmosphere liquid level LA directly contacted with air keeps constant, so head difference d1 keeps constant.That is, by the magnetism of the regulation of record-header 17, ink stably can be supplied to record-header 17 from ink reservoir 30.

As shown in the partial enlarged drawing of the ink chamber 340 of Fig. 4, the liquid level LF of ink and the boundary member A of the interior side contacts of the wall 370 of division ink chamber 340 easily form the film of ink.The film of ink formed at boundary member A due to easy drying, so become the producing cause of condensation product when wall peels off.Equally, because the ink being attached to supporter 380 (aftermentioned) also easily forms film, so easily become the producing cause of condensation product.

The structure > of < ink reservoir

Fig. 5 is the stereoscopic figure of the example schematically showing the ink reservoir that the present invention relates to.Specifically, in Fig. 5, show and the state before membrane element 316,322 is installed to ink reservoir 30.

In the example of fig. 5, ink reservoir 30 is roughly cylinder body shape (specifically for roughly right prism shape), but is not limited thereto, and can have any shape.Ink reservoir 30 is mainly formed with the plastic plate be made up of synthetic resins (polypropylene etc.), sometimes the parts that its part is flexible (such as, by polyolefine (such as, polyethylene, polypropylene), polymeric amide, polyester (such as, polyethylene terephthalate), vinyl based copolymer (such as, vinyl-acetic ester, vinylchlorid) and the material such as metal or metal oxide (such as, aluminium, aluminum oxide) is used alone or and the film used and formed) formed.Specifically, the ink reservoir 30 of Fig. 5 is by bonding for film 34 in the one side of the plastic containers by molding synthetic resin.In addition, preferred oil ink container 30 is transparent or semitransparent at least partially.Thereby, it is possible to confirm the state (water level etc. of ink) of the ink in ink reservoir 30.

Owing to containing the wetting agents such as tensio-active agent in normally used ink composite, so there is the high trend of the wettability of ink composite to the parts of the inner side of the wall of formation division ink chamber.Therefore, easily form the film of ink composite in the inner side of wall 370, the film of formation becomes the producing cause of condensation product sometimes.In order to suppress the generation of such film, the parts forming the inner side of wall 370 preferably use the material high to the lyophobicity of ink composite.If particularly use fluorine cpd, silicone resin, polypropylene, polystyrene, polyethylene, polyester, polyvinyl chloride, resol, polyvinyl acetate and poly-(methyl) acrylate (such as, poly-(methyl) methyl acrylate etc.) etc., then easily above-mentioned static contact angle CA is set in more than 10 °.These materials can be used alone a kind or combine two or more use.In these materials, from the viewpoint of more easily make above-mentioned static contact angle CA be more than 10 ° such, more preferably use the oleophobic such as fluorine cpd, silicone resin ink material.

Should illustrate, in the present invention, " poly-(methyl) acrylate " refers to both polyacrylic ester and polymethacrylate, and " poly-(methyl) methyl acrylate " refers to both polymethyl acrylate and polymethylmethacrylate.

As fluorine cpd, the organic compound, fluoro-resin etc. with fluorine atom can be enumerated.As the organic compound with fluorine atom, preferably use fluoro alkyl-silane, there are the alkane of fluoroalkyl, carboxylic acid, alcohol, amine etc.As fluoro alkyl-silane, such as, 17 fluoro-1,1,2,2-tetrahydrochysene decyl Trimethoxy silanes, 17 fluoro-1,1,2,2-tetrahydrochysene trichlorosilanes can be enumerated; As the alkane with fluoroalkyl, Perfluorocyclobutane, perfluoromethyl cyclohexane, perfluoro-n-hexane, perfluor normal heptane, 14 fluoro-2-methylpentanes, perfluor dodecane, perfluor eicosane can be enumerated; As the carboxylic acid with fluoroalkyl, perfluoro decanoate, Perfluorocaprylic Acid can be enumerated; As the alcohol with fluoroalkyl, the fluoro-2-amylalcohol of 3,3,4,4,5,5,5-seven can be enumerated; As the amine with fluoroalkyl, 17 fluoro-1,1,2,2-tetrahydrochysene decyl amine etc. can be enumerated.As fluoro-resin, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoraoethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-ethylene copolymer (ETFE), polychlorotrifluoroethylene (PCTFE), chlorotrifluoroethylene-ethylene copolymer (ECTFE), tetrafluoroethylene (PTFE) etc. can be enumerated.

As silicone resin, the polymkeric substance had by the siloxane structural unit of the organic group replacements such as alkyl can be enumerated, such as, α can be used, w-two (3-aminopropyl) polydimethylsiloxane, α, w-two (3-glycidoxypropyl group) polydimethylsiloxane, α, w-bi-vinyl polydimethylsiloxanes etc. have the polymkeric substance of dimethylsiloxane skeleton.

In the inner side of the wall 370 dividing ink chamber 340, can lyophobic layers be set.Lyophobic layers is such as formed by coating lyophoby agent (such as, above-mentioned fluorine cpd, silicone resin) etc.Should illustrate, when the inner side of wall 370 arranges lyophobic layers, the parts forming the inner side of wall 370 refer to lyophobic layers.Lyophoby agent can use commercially available product, such as, can enumerate HC303VP (trade(brand)name, Wacker Asahikasei Silicone Co., Ltd. system, silicone resin), SFCOAT (trade(brand)name, AGC SEIMI CHEMICAL Co., Ltd. system, fluorine cpd) etc.

The surface dividing the parts of the inner side of the wall 370 of ink chamber 340 in formation can arrange fine periodic structure.Fine periodic structure can utilize the manufacture method of the resin-formed body recorded in such as Japanese Unexamined Patent Publication 2012-66417 publication to be formed.Fine periodic structure refers to that continuous setting example makes the distance between the summit of adjacent cone be the structure of 1.0 μm ~ about 100 μm as pyramid (pyrometric cone, quadrangular pyramid, hexagonal cone etc.).Thereby, it is possible to improve the parts of inner side and the lyophobicity of ink composite that form wall 370.

The center line average roughness (Ra) of the inner side of wall 370 is preferably 0.1 μm ~ 10 μm.Thus, the lyophobicity of the inner side of wall 370 is improved further.As the reason improving lyophobicity like this, think owing to defining multiple micro concavo-convex on the surface of inwall.Center line average roughness (Ra) can use the optical 3-dimensional surface roughometer RSTplus of such as WYCO company to measure.Specifically, in 40 times, object lens, intermediate mirror 1.0 times, the visual field of 111 × 150 μm, 5 points are measured, using its mean value as center line average roughness (Ra).

The 1st stream 310 is formed with in a state of use in the side walls of the side forming ink reservoir 30.1st stream 310 has atmospheric air open port 317, is communicated with stream 320, film 316, gas-liquid separation chamber 312 and is communicated with stream 314.Gas-liquid separation chamber 312 is concave shape, is formed with opening in the bottom surface of concavity.Opening via bottom surface makes gas-liquid separation chamber 312 and is communicated with stream 314 and is communicated with.The end being communicated with stream 314 is air introduction mouth 318 (with reference to Fig. 3).Surround gas-liquid separation chamber 312 bottom surface inwall all-round on be formed with dike 313.Membrane element 316 is bonding with dike 313.In addition, membrane element 322 is bonded in ink reservoir 30 in the mode of the stream covering the formation of the outside surface at ink reservoir 30 in the 1st stream 310.Thus, formed and be communicated with stream 320, prevent the ink of ink reservoir 30 inside from externally leaking simultaneously.Should illustrate, in order to extend the distance from atmospheric air open port 317 to gas-liquid separation chamber 312, the part being communicated with stream 320 is formed along the periphery of gas-liquid separation chamber 312.Thereby, it is possible to suppress the moisture in the ink of ink reservoir 30 inside externally to evaporate from air introduction mouth 318.

The air flowing through the 1st stream 310 wherein way using by the membrane element 316 as gas-liquid separation membrane bonding with dike 313.Thereby, it is possible to suppress the ink being housed in ink reservoir 30 inside externally to leak further.

Ink leading-out portion 306 is tubular, and its inside has stream.Inking road 24 is connected with at this ink leading-out portion 306.In addition, the other end 348 opening towards the outside of ink leading-out portion 306.

Next, be described with reference to the internal structure of accompanying drawing to ink reservoir.Fig. 6 and Fig. 7 is the stereographic map of the internal structure of the ink reservoir 30 be shown schematically under using state.In addition, Fig. 8 is the side-view of the internal structure of the ink reservoir 30 be shown schematically under using state.More specifically, Fig. 8 is the figure when the negative direction of Y-axis observes ink reservoir 30, and the 1st side 372A (aftermentioned) be made up of film is positioned at front.

In the example of Fig. 6 and Fig. 7, ink reservoir 30 is concave shape of a lateral opening, and its opening tunicle 34 clogs, and is formed by multiple spaces (room) of separating in inside.More specifically, wind box 330, ink chamber 340 and ink chamber's access 350 is formed with in the inside of ink reservoir 30.That is, the parts (wall, film 34 etc.) forming ink reservoir 30 play function as the wall 378 dividing the wall 370 of ink chamber 340, the wall 374 dividing wind box 330 and division ink chamber access 350.Should illustrate, in Fig. 6, be decorated with section line in the part being bonded with film 34.

Ink chamber 340 is communicated with the ink inlet 304 that can supplement ink wherein.In order to suppress the leakage of ink, air is mixed into ink chamber 340, ink inlet 304 in a state of use clog by latch 302.

As can be seen from figures 6 to 8, ink chamber 340 is divided by wall 370, when injecting ink to ink chamber 340, and the inner side of wall 370 and ink contact.

In the example of Fig. 6 and Fig. 7, the wall 370 dividing ink chamber 340 is made up of upper surface 371, side 372 and bottom surface 373.At this, the upper surface 371 of wall 370 refers to the face can observed when vertical direction observes ink chamber 340 upward from its inside in a state of use.The face can observed when the side 372 of wall 370 refers to and observes ink chamber 340 in a state of use from its inside in the horizontal direction.The bottom surface 373 of wall 370 refers to the face can observed when vertical direction observes ink chamber 340 down from its inside in a state of use.

More specifically, in the example of Fig. 6 and Fig. 7, side 372 is by the 1st side 372A, the 2nd side 372B opposed with the 1st side 372A, form with the 3rd side 372C that the 1st side 372A connects and the 4th side 372D opposed with the 3rd side 372C.

At this, the 1st side 372A is made up of film 34.In addition, upper surface 371, the 2nd side 372B, the 3rd side 372C, the 4th side 372D and bottom surface 373 are made up of the material beyond film.

In the example of Fig. 6 and Fig. 7, ink chamber 340 comprises the 1st Room 340F and the 2nd Room 340S, and the 1st host body 340F is configured in the top of the 2nd Room 340S.In addition, the 1st Room 340F and the 2nd host body 340S configures side by side, is communicated with by inner connected entrance 345.Volumetric ratio the 2nd Room 340S of the 1st Room 340F is large, and the main chamber as ink chamber 340 plays function.

Be provided with ink inlet 304 and air induction port 352 at the 1st Room 340F, be provided with the ink export 349 as one end of ink leading-out portion 306 at the 2nd Room 340S.In a state of use, ink export 349 is positioned at the below of air induction port 352.Air induction port 352 and inner connected entrance 345 are located at the different positions of the bottom surface (part for bottom surface 373) of the 1st Room 340F respectively.Ink export 349 is located at the side (part of the 4th side 372D) of the 2nd Room 340S.

In order to catch the foreign matter etc. that the is mixed into when condensation product, the ink that produce in ink chamber 340 inject, can strainer (not shown) be set in ink reservoir 30.This strainer can be arranged on ink export 349 in such as ink reservoir 30 or ink leading-out portion 306.The continuous supply-type ink reservoir of the recharged ink that ink reservoir 30 of the present embodiment is such with do not supplement ink but compared with the ink reservoir (so-called print cartridge) carrying out the type changed, the contact position of the area of liquid-gas interface, the inner side of wall and ink level is extremely large, also very long between the usage period, therefore easily produce condensation product in a large number or continually, there is the trend that the easy bright changes of bad phenomenon such as the supply of the ink caused by condensation product trapped by strainer is bad are serious.Even if under such circumstances, the ink of the boundary member A that ink reservoir 30 of the present embodiment also not easily contacts because of the liquid level LF of the inner side with ink that are attached to wall 370 as mentioned above and supporter 380 and the condensation product that produces, therefore, it is possible to the blocking of the strainer that is arranged in ink reservoir 30 of minimizing or the strainer that is arranged on the ink flow path in ink-jet recording device.

Ink chamber 340 have be connected with the inner side of wall 370, the supporter 380 of supporting walls 370.Supporter 380 has the intensity, the rigidity that improve wall 370, improves the functions such as the cementability of the film 34 of the part (the 1st side 372A) as wall 370, sometimes referred to as " stiffening web ".

Ink reservoir 30 can be used in the parts of formation supporter 380, form the material enumerated in the parts of the inner side of wall 370.In above-mentioned materials, from the viewpoint of good to the lyophobicity of ink composite, the material forming and enumerate in the parts of the inner side of wall 370 preferably can be used.Should illustrate, lyophobic layers, the fine periodic structure as described in the explanation of the parts of the inner side at formation wall 370 can be set on the surface of supporter 380.When the surface of supporter 380 arranges lyophobic layers, the parts forming supporter 380 refer to lyophobic layers.

At this, under the using state of ink reservoir 30, when being filled with the ink of 50% of ink chamber 340 volume, preferably make the area (R2) large (that is, preferably meeting the relation of R1 > R2) that supporter 380 contacts with air (air) than supporter with the area (R1) of ink contact.If meet such relation, then the chance of the ink and atmosphere that are attached to supporter 380 when the ink of ink chamber 340 is consumed reduces, therefore, it is possible to suppress the drying being attached to the ink of supporter 380.Thereby, it is possible to suppress the generation of the condensation product caused by the ink being attached to supporter 380, therefore, it is possible to suppress the blocking of record-header 17.Fig. 8 is used to be described the ink reservoir 30 meeting such relation.

The LF of Fig. 8 ₅₀the liquid level position of ink when representing ink is filled into ink chamber 340 volume 50%.In the ink reservoir 30 of Fig. 8, by making more than LF ₅₀the number of supporter 380 that exists of position than at LF ₅₀the number of the supporter 380 that following position exists is few, thus meets the relation of above-mentioned R1 > R2.Thereby, it is possible to suppress the generation of the condensation product caused by the ink being attached to supporter 380.

Supporter 380 as shown in Figure 6 to 8, can comprise the 1st supporter 382, the 2nd supporter 384 and the 3rd supporter 386.In addition, these supporters can arrange multiple respectively.

In the example of Fig. 6 and Fig. 7, the 1st supporter 382 is connected with the inner side of the 1st side 372A and the inner side of the 2nd side 372B.1st supporter 382 is mainly used in raising the 1st side 372A (film 34) cementability to ink reservoir 30.Should illustrate, as long as the 1st supporter 382 can improve the cementability of the 1st side 372A, then can be connected with the optional position in upper surface 371, side 372 and bottom surface 373.

In the example of Fig. 6 and Fig. 7, the 2nd supporter 384 is connected with the inner side of the 1st supporter 382 and the 2nd side 372B.2nd supporter 384 is mainly used in support the 1st supporter 382.Should illustrate, as long as the 2nd supporter 384 can support the 1st supporter 382, just can be connected with the optional position in upper surface 371, side 372 and bottom surface 373, also can connect the face of more than 2.

In the example of Fig. 6 and Fig. 7, the 3rd supporter 386 is made up of with the supporter of the inner side of the 3rd side 372C and the supporter being connected the inner side of the 2nd side 372B and the inner side of the 4th side 372D the inner side of connection the 2nd side 372B.3rd supporter 386 is mainly used in the intensity improving the part that each connects.Should illustrate, as long as the 3rd supporter 386 can improve the intensity of the connection portion of each, just can be connected with the optional position in upper surface 371, side 372 and bottom surface 373, the face of more than 2 can be connected.

Ink reservoir 30 in a state of use, when being filled with the ink of 50% of ink chamber 340 volume, preferably have not with the supporter of ink contact.That is, in other words as shown in Figure 8, more than LF ₅₀the position of (liquid level position of ink when ink is filled into 50% of ink chamber 340 volume) and LF ₅₀all there is supporter in following position.Like this, by LF ₅₀above and below have supporter, the intensity of ink reservoir 30 can be improved.

Supporter 380 preferably arranges multiple in the direction that the vertical direction with ink reservoir 30 is intersected.That is, in the example of Fig. 6 ~ Fig. 8, the such multiple supporters 380 of the 1st supporter 382, the 2nd supporter 384 and the 3rd supporter 386 are located at the direction (X-direction) intersected with vertical direction (Z axis).Thereby, it is possible to improve the intensity of ink reservoir 30.If the direction particularly intersected in the vertical direction with ink reservoir 30 arranges multiple 1st supporter 382 (with reference to Figure 10 and Figure 11 described later), then the bonding strength of the 1st side 372A (film 34) improves further, therefore preferably.

When the ink of ink chamber is consumed, ink is trapped on supporter, and the ink be trapped on supporter produces condensation product at liquid-gas interface sometimes.Therefore, when the liquid level of ink is by supporter, preferably use ink to be difficult to the supporter of the shape of being detained.Specifically, by adopt the upper surface of supporter be in a state of use shape along vertical direction towards epirelief (in other words, the shape of vertical direction bending or warpage upward) and not there is the supporter of horizontal plane, the ink being attached to supporter is easily washed out.Should illustrate, the upper surface of supporter refers to the face can observed when vertical direction observes supporter down from the inside of ink chamber in a state of use.To there is the particular instantiation of the supporter of such shape in Figure 10 and Figure 11.

From the intensity guaranteeing ink reservoir 30, and reduce the generation of the condensation product caused from the viewpoint of the ink being attached to supporter, preferably the 2nd supporter 384 guarantees the connection area with wall, and reduce its surface-area.Namely, 2nd supporter 384 preferably adopts under the using state of ink reservoir 30, the mask occurred when observing the 2nd supporter 384 down along vertical direction has the limit be connected with the 2nd side 372B, and the shape that the length of line segment parallel with above-mentioned limit in above-mentioned is shorter than the length on this limit.2nd supporter 384 more preferably adopts under the using state of ink reservoir 30, and the mask occurred when observing the 2nd supporter 384 down along vertical direction has the shape on the limit directly connecting the 2nd side 372B and the 1st supporter 382.To there is the particular instantiation of the 2nd supporter of such shape in Fig. 9 (A).

Fig. 9 (A) is the figure of the shape of the 2nd supporter 384 schematically shown when observing the ink chamber 340 of Fig. 7 along Z-direction downward (along vertical direction down).As shown in Fig. 9 (A), the face 384a (oblique line portion) occurred when observing the 2nd supporter 384 down along vertical direction has the limit L be connected with the 2nd side 372B ₁, and in the 384a of face with limit L ₁parallel line segment (such as, limit L ₀) length than limit L ₁the short shape of length.More specifically, face 384a is by the limit L be connected with the 2nd side 372B ₁, the limit L to be connected with the 1st supporter 382 ₂and connect the limit L of the 2nd side 372B and the 1st supporter 382 ₃the trilateral formed.Thereby, it is possible to guarantee the intensity of ink reservoir 30, and reduce the contact area of ink and ink reservoir 30 and suppress the generation of the condensation product caused by the ink being attached to the 2nd supporter 384.

From the intensity guaranteeing ink reservoir 30, and reduce the generation of the condensation product caused from the viewpoint of the ink being attached to supporter, the 3rd supporter 386 is same with the 2nd supporter 384 preferably guarantees the connection area with wall, reduces its surface-area.Namely, 3rd supporter 386 preferably adopts under the using state of ink reservoir 30, and the mask occurred when observing the 3rd supporter 386 down along vertical direction has the limit that connects with the 2nd side 372B and the length of line segment parallel with above-mentioned limit in above-mentioned the shape shorter than the length on this limit.3rd supporter 386 more preferably adopts under the using state of ink reservoir 30, and the mask occurred when observing the 3rd supporter 386 down along vertical direction has the shape on the limit of at least 2 directly connecting and composing the wall 370 dividing ink reception room 340.To there is the particular instantiation of the 3rd supporter of such shape in Fig. 9 (B).

Fig. 9 (B) is the figure of the shape of the 3rd supporter 386 schematically shown when observing the ink chamber 340 of Fig. 7 along Z-direction downward (along vertical direction down).As shown in Fig. 9 (B), the face 386a (oblique line portion) occurred when observing the 3rd supporter 386 down along vertical direction has the limit L be connected with the 2nd side 372B ₁₀, and in the 386a of face with limit L ₁₀parallel line segment (such as, limit L ₀₀) length than limit L ₁₀the short shape of length.More specifically, face 386a is by the limit L be connected with the 2nd side 372B ₁₀, the limit L to be connected with the 3rd side 372C ₂₀and connect the limit L of the 2nd side 372B and the 3rd side 372C ₃₀the trilateral formed.Thereby, it is possible to guarantee the intensity of ink reservoir 30, and suppress the generation of the condensation product caused by the ink being attached to the 3rd supporter 386.

To be the shape of the upper surface of the supporter under using state be the example of Figure 10 and Figure 11 along vertical direction projection upward and do not have the concrete example of the supporter of horizontal plane.

Figure 10 is the figure of the internal structure of the ink reservoir schematically shown under using state.In the ink reservoir 30A of Figure 10, except the supporter 380A difference being arranged on ink chamber 340A, other is identical with the ink reservoir 30 of Fig. 8, therefore omits the explanation of same section.

The supporter 380A of Figure 10 comprises the 1st supporter 382A and the 3rd supporter 386A, corresponding with the 1st supporter 382 of Fig. 8 and the 3rd supporter 386 respectively.1st supporter 382A is the cylindrical shape extended along Y direction.In addition, the 3rd supporter 386A is the shape identical with the 3rd supporter 386 of Fig. 8, but the angle arranged is different.That is, the upper surface of the 3rd supporter 386 of Fig. 8 and plane-parallel, on the other hand, the downward-sloping configuration of upper surface of the 3rd supporter 386A of Figure 10.Like this, the shape of the upper surface of the supporter 380A of Figure 10 is along vertical direction projection upward, and does not have horizontal plane, therefore, it is possible to effectively suppress the generation of condensation product.

Figure 11 is the figure of the internal structure of the ink reservoir schematically shown under using state.In the ink reservoir 30B of Figure 11, except the supporter 380B difference being arranged on ink chamber 340B, other is identical with the ink reservoir 30 of Fig. 8, therefore omits the explanation of same section.

The supporter 380B of Figure 11 comprises the 1st supporter 382B and the 3rd supporter 386B, corresponding with the 1st supporter 382 of Fig. 8 and the 3rd supporter 386 respectively.1st supporter 382B is the triangular prism shape extended along Y direction.In addition, the 3rd supporter 386A of the 3rd supporter 386B and Figure 10 is identical.Like this, the shape of the upper surface of the supporter 380B of Figure 11 is along vertical direction projection upward, and does not have horizontal plane, therefore, it is possible to effectively suppress the generation of condensation product.

As shown in Figure 10 and Figure 11, from the viewpoint of the cementability of raising the 1st side 372A, the 1st supporter 382A (382B) can arrange multiple.In this situation, as shown in Figure 10, in a state of use with the 1st side 372A for observing ink reservoir 30A from the side in front time, preferably in the 1st supporter 382A supporter and the distance D1 with its another adjacent supporter be ink reservoir 30 long side direction distance (length) D less than 25%.Thus, the bonding strength of the 1st side 372A (film) can sometimes be improved further.Should illustrate, distance D1 refers to the surface of a connection supporter and the distance with the shortest straight line in the straight line on the surface of its another adjacent supporter.

In addition, as shown in Figure 10, in a state of use with the 1st side 372A for observing ink reservoir 30A from the side in front time, preferably the distance D2 of the side 372 of the 1st supporter 382A and wall 370 be ink reservoir 30 long side direction distance (length) D less than 25%.Thus, the bonding strength of the 1st side 372A can sometimes be improved further.Should illustrate, distance D2 refers to the distance of the shortest straight line in the straight line on the surface of connection the 1st supporter 382A and the surface of side 372.

From the viewpoint of the circulation of the ink improved in ink chamber 340, supporter 380 can have otch, hole etc.

In the example of Fig. 6 and Fig. 7, the shape of ink chamber 340 is the roughly column extended along vertical direction in a state of use, but is not limited to this shape.

At this, carry out the initial filling of ink (such as, when ink reservoir dispatches from the factory etc., ink is filled into about 90% of ink chamber's capacity) after, the state of Long contact time is sometimes in liquid-gas interface and the specific position in the wall dividing ink chamber of ink.In this situation, sometimes easily produce the condensation product from ink at the wall contacted with the liquid-gas interface of ink.Therefore, the ink chamber of the shape in the region that can expand by using the liquid-gas interface with the ink when the ink being filled into ink chamber reduces, can suppress the generation of condensation product.By the particular instantiation of the ink reservoir of such shape in Figure 12.

Figure 12 is the side-view of an example of the shape schematically showing ink reservoir.Figure 12 is the figure when the negative direction of Y-axis observes ink reservoir 30C, and except the shape difference of ink chamber 340C, other is identical with the ink reservoir 30 of Fig. 8, therefore omits the explanation of same section.

LF in Figure 12 ₉₀the position of ink level LF when representing ink is filled into ink chamber 340C volume 90%.LF in Figure 12 ₅₀represent ink consumption to ink chamber 340C volume 50% time the position of ink level.In Figure 12, arrive LF ₉₀time ink level LF area ratio arrive LF ₅₀height time the area of ink level LF little.So the liquid-gas interface (ink level LF) of ink during owing to initially filling and the contact part of wall 370 tail off, so can suppress the generation of condensation product.

Preferably do not arrange in ink chamber 340 carry out ink absorption, maintenance printing ink absorbing means (such as, polyurethane foam, fiber construct).The area of the liquid-gas interface of ink and extraneous air may be increased due to printing ink absorbing means, and easily keep the condensation product that ink chamber 340 produces, so sometimes become the smooth flow hindering ink and the reason causing the bad grade of the supply of ink.

5. the 1st embodiment

Below, utilize embodiment and comparative example to be specifically described the present invention, but the invention is not restricted to these embodiments.

The preparation of 5.1 ink composites

According to each composition of use level mix and blend shown in table 1, carry out pressure filtration with the film filter in 10 μm, aperture, obtain ink 1 ~ 3.Should illustrate, the unit recorded in table 1 is quality %.In addition, for pigment and resin, represent solids component scaled value.

As follows with the composition be called for short or trade(brand)name is recorded in the composition used in table 1.

Carbon black (C.I. Pigment black 7, the median size 100nm of volume reference, from dispersed color)

Styrene-acrylic resins (fixing resin, glass transition temperature Tg-15 DEG C, the median size 80nm of volume reference, the emulsion of copolymer in cinnamic acrylic ester)

BYK-348 (trade(brand)name, BYK Inc., silicone based surfactants)

In addition, to ink 1 ~ 3 chart surface tension obtained.Surface tension is by using automatic surface tensiometer CBVP-Z (consonance interface science Inc.), surface tension when mensuration ink soaks platinum plate under the environment of 20 DEG C and the value that obtains.The capillary value of each ink is shown in table 1 in the lump.

[table 1]

5.2. the manufacture of ink reservoir

Use the material shown in table 2, utilize the ink reservoir 1 ~ 5 of known method manufacture and Fig. 7 same shape.For ink reservoir 1,2 ~ 4, the parts dividing the inner side of the wall of ink chamber are made up of the material identical with ink reservoir.On the other hand, for ink reservoir 2 and 5, the parts dividing the inner side of the wall of ink chamber are made up of silicone resin or methyl silicate oligopolymer.Specifically, ink reservoir 2 and 5 is by after making ink reservoir with polypropylene, is dividing the inner side coating silicone resin of wall of ink chamber or methyl silicate oligopolymer and is making it dry and obtain.

The further elements of the material used in table 2 is as follows.

PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer)

PP (polypropylene)

PET (polyethylene terephthalate)

Silicone resin (trade(brand)name " HC303VP ", Wacker Asahikasei Silicone Co., Ltd. system)

Methyl silicate oligopolymer (hydrophilic material)

[table 2]

5.3. evaluation test

5.3.1. lyophobicity

Static contact angle CA (CA before the evaporation of < moisture ₀) >

Static contact angle CA (the CA of the ink before the parts of the inner side of the wall of following mensuration formation division ink chamber and moisture evaporate ₀).

First, the parts from ink reservoir 1 ~ 5, formation being divided the inner side of the wall of ink chamber cut with tabular, obtain flat sample.Then, base plate glass is changed to this flat sample, pure water is changed to ink, in addition, based on the sessile drop method of JIS R 3257 (base plate glass wettability of the surface test method), measure static contact angle CA (CA ₀).

Determinator uses automatic contact angle determination device OCAH200 (ProductName, DataPhysics Inc.), utilizes sessile drop method (Cecil Drop Method) to measure.Static contact angle is the drop 1 μ l by dripping ink on above-mentioned sample, measures the contact angle of dropping after 1 minute and the value (mean values of 5) that obtains.

Static contact angle CA after the evaporation of < moisture ₁>

Make ink moisture evaporation 1% after, with above-mentioned " < moisture evaporate before static contact angle CA (CA ₀) > " similarly carry out, measure the static contact angle CA after moisture evaporation ₁.

5.3.2. filter stoppage

The ink reservoir 1 ~ 5 obtained as mentioned above is mounted in the ink-jet printer that form same with Fig. 1 (A).Then, in ink chamber, fill the above-mentioned ink 1 of 500ml, after making ink reservoir be in the posture of using state, place 2 weeks under the condition of temperature 40 DEG C of relative humidity 20%RH.

After 2 weeks, the ink 500ml in record-header ejection ink chamber, confirms the blocked state of the strainer (material SUS, mesh size 3.5 μm) be arranged in the inking pipe connecting ink reservoir and secondary tank.The blocked state of strainer is by using the surface of Digital microscope VHX-900 (KEYENCE Inc. of Co., Ltd.) acknowledged filter, and the blocked area (%) calculating the area relative to strainer is evaluated.Because logical liquid measure supposes 3% of usage quantity, so make blocking amount be 30 times calculate blocked area at the ink-jet printer life-span.

Metewand is as follows.

S: the blocked area of strainer is less than 10%

A: the blocked area of strainer is more than 10% and be less than 20%

B: the blocked area of strainer is more than 20% and be less than 40%

C: the blocked area of strainer is more than 40% and be less than 50%

D: the blocked area of strainer is more than 50%

5.4. evaluation result

The result of above-mentioned evaluation test is shown in table 3.

[table 3]

As shown in the evaluation result of table 3, the static contact angle CA (CA of the ink 1 before known parts and moisture by making the inner side of the wall of formation division ink chamber evaporate ₀) be more than 10 °, reduce over the blocking (with reference to embodiment 1 ~ 4) of filter.This represents by combinationally using static contact angle CA (CA ₀) be ink and the parts of more than 10 °, the generation of condensation product can be reduced.

In addition, known by meeting 10 °≤CA ₀and 10 °≤CA ₁(above-mentioned condition (1)) also meets 0 °≤CA ₀-CA ₁≤ 5 ° (above-mentioned condition (2)), the blocking of strainer reduces (with reference to embodiment 1 ~ 3) further.Known particularly by meeting 20 °≤CA ₀and 20 °≤CA ₁(above-mentioned condition (1-1)) also meets 0 °≤CA ₀-CA ₁≤ 5 ° (above-mentioned condition (2)), the blocking of strainer reduces (embodiment 1 and 2) further.

On the other hand, as shown in the evaluation result of table 3, in comparative example 1, the wettability between the ink 1 before the parts of the inner side of the wall of formation division ink chamber and moisture evaporate is too high, cannot measure static contact angle CA (CA ₀).In addition, the blocking of strainer is serious, is the degree that the ejection stability of record-header is impaired.

Except use ink 2, carry out in the same manner as above-described embodiment 1, obtain contact angle and reduce (CA ₀-CA ₁).Its result, the contact angle using ink 2 to obtain reduces (CA ₀-CA ₁) value and embodiment 1 in contact angle reduce (CA ₀-CA ₁) value compare, be low value (being namely less than 3 °).Further, use ink 2 to implement the evaluation test of the blocking of strainer, the blockage ratio embodiment 1 of results filter is few.This is presumably because that ink 2 solids component amount compared with ink 1 is few, and not containing resin, so there is no the cohesion that the pigment caused by resin occurs.

Except use ink 3, carry out the evaluation of the blocking of strainer in the same manner as above-described embodiment 1.Its result, compared with using the situation of ink 1, not easily there is the blocking of strainer in known use ink 3.This is presumably because that ink 3 is high with other ink phase specific surface tension, so be not easily attached to the wall of ink chamber, not easily produce condensation product.

6. the 2nd embodiment

According to each composition of use level mix and blend shown in table 4, carry out pressure filtration with the film filter in 10 μm, aperture, obtain ink A (composition 7 kinds that solvent species is different) and ink B.Should illustrate, the unit recorded in table 4 is quality %.In addition, for pigment and resin, represent solids component scaled value.

As follows with the composition be called for short or trade(brand)name is recorded in the composition used in table 4.

Carbon black (C.I. Pigment black 7, the median size 100nm of volume reference, from dispersed color)

Styrene-acrylic resins (fixing resin, Tg-15 DEG C, the median size 80nm of volume reference, the emulsion of copolymer in cinnamic acrylic ester).

Add solvent orange 2 A, the solvent namely recorded in table 5, makes the ink composite of experimental example 1 ~ 7.Should illustrate, in the ink composite of experimental example 7, glycerine is 13 quality %.

[table 4]

[table 5]

6.1. capillary mensuration

To the ink composite of each experimental example obtained, before the evaporation test of enforcement solvent, measure surface tension.Thereafter, ink composite is transferred the condition of 60 DEG C and sets to 0 .75 hour, make the solvent in ink evaporate 3.5 quality %.Similarly placing makes solvent evaporate 7 quality % for 1.5 hours, places and within 2.5 hours, makes solvent evaporate 12 quality %.Surface tension is by using automatic surface tensiometer CBVP-Z (consonance interface science Inc.), surface tension when mensuration platinum plate soaks ink under the environment of 20 DEG C and the value that obtains.The surface tension of each ink and surface tension variations value are shown in table 5 in the lump.Should illustrate, capillary changing value is calculating take initial surface tension as the value that benchmark changes.

6.2. precipitate evaluation test

In the ink chamber of above-mentioned ink reservoir 30, fill the ink composite of the above-mentioned experimental example 1 ~ 8 of 500ml, after making ink reservoir be in the posture of using state, place 2 weeks under the condition of temperature 40 DEG C of relative humidity 20%RH.After 2 weeks, the ink 500ml in record-header ejection ink chamber, confirms the blocked state of the strainer (material SUS, mesh size 3.5 μm) be arranged in the inking pipe connecting ink reservoir and secondary tank.The blocked state of strainer is the surface using Digitalmicroscope VHX-900 (KEYENCE Inc. of Co., Ltd.) acknowledged filter.

Based on the result of observing surface, in the ink composite group of each experimental example, carry out the few sequence of precipitate generation, the results are shown in table 5.In table 5, the ink that the numeral of precipitate evaluation is little is the minimum ink of generation, and the large ink of numeral is the ink that generation is maximum.

As shown in Table 5, be only in the situation (experimental example 7) of wetting Agent for Printing Inks with glycerine, observe surface tension downward trend when solvent evaporates strong, many precipitates can be seen.In addition, the trend that the ink that more presents rising trend for surface tension when solvent evaporates more has precipitate to reduce is observed.In addition, from the result of experimental example 8, the solvent of the display high wettability (perviousness) that 1,2-hexylene glycol is such has chronicity to decline capillary trend, becomes the factor of precipitate.

The invention is not restricted to above-mentioned embodiment, can various distortion be carried out.Such as, the present invention comprises the formation identical in fact with the formation illustrated in embodiment (such as, function, method and the formation come to the same thing or the object formation identical with effect).In addition, the present invention comprises the formation obtained by the non-intrinsically safe aliquot replacement of the formation illustrated in embodiment.In addition, the present invention comprises and can serve the same role the formation of effect with the formation illustrated in embodiment or realize the formation of identical object.In addition, the present invention comprises the formation that illustrates in embodiment and adds known technology and the formation that obtains.

Nomenclature

3 ... paper feed ports, 14 ... ejection port, 16 ... balladeur train, 16a ... inking pin, 17 ... record-header, 20 ... secondary tank, 24 ... inking pipe, 30 ... ink reservoir, 34 ... film, 50 ... ink accepting unit, 51 ... container accepting box, 54 ... upper surface shell, 202 ... ink acceptance division, 204 ... ink containment room, 206 ... strainer, 208 ... ink flowing road, 300 ... atmosphere opening stream, 302 ... latch, 304 ... ink inlet, 306 ... ink leading-out portion, 310 ... 1st stream, 312 ... gas-liquid separation chamber, 313 ... dike, 314 ... be communicated with stream, 316 ... sealing element (membrane element), 317 ... atmospheric air open port, 318 ... air introduction mouth (wind box opening), 320 ... be communicated with stream, 322 ... membrane element, 330 ... wind box, 340 ... ink chamber, 345 ... inner connected entrance, 348 ... the other end 349 ... ink export, 350 ... 2nd stream (ink chamber's access), 351 ... wind box side opening, 352 ... air induction port, 370 ... wall, 371 ... upper surface, 372 ... side, 372A ... 1st side, 372B ... 2nd side, 372C ... 3rd side, 372D ... 4th side, 373 ... bottom surface, 374 ... wall, 378 ... wall, 380 ... supporter, 382 ... 1st supporter, 384 ... 2nd supporter, 386 ... 3rd supporter

Claims (12)

1. an ink composite is the ink composite flowing into ink reservoir, and described ink reservoir has can the ink chamber of makeup oil ink composition from ink inlet, and described ink chamber can be communicated with extraneous air,

Described ink composite contains pigment, resin and organic solvent, and, be more than 10 ° with forming the static contact angle dividing the parts of the inner side of the wall of described ink chamber.

2. ink composite according to claim 1, further containing water,

Further, the ink composite before being evaporated by moisture is set to CA with the static contact angle of the parts of the inner side of the described wall of formation ₀, ink composite when evaporating the moisture of 1 quality % relative to the total mass 100 quality % of ink composite before moisture evaporation and the static contact angle of parts of the inner side forming described wall are set to CA ₁time, meet each following condition:

Condition (1): 10 °≤CA ₀and 10 °≤CA ₁,

Condition (2): 0 °≤CA ₀-CA ₁≤ 5 °.

3. ink composite according to claim 1 and 2, wherein, the surface tension of described ink composite is 20mN/m ~ 50mN/m.

4. according to the ink composite in claims 1 to 3 described in wantonly 1, wherein, the content of described organic solvent is 5 quality % ~ 40 quality %.

5. according to the ink composite in Claims 1 to 4 described in wantonly 1, wherein, described organic solvent contains glycerine and is selected from beyond described glycerine more than one in polyalcohols, nitrogen-containing heterocycle compound, urea and urea derivative.

6. according to the ink composite in Claims 1 to 5 described in wantonly 1, wherein, the second-order transition temperature of described resin is less than 25 DEG C.

7., according to the ink composite in claim 1 ~ 6 described in wantonly 1, it is more than 5 ° with the receding contact angle of the parts of the inner side of the described wall of formation.

8., according to the ink composite in claim 1 ~ 7 described in wantonly 1, the initial surface tension of ink composite is being set to γ _m0, the surface tension when solvent in ink being evaporated 3.5 quality % is set to γ _m1, the surface tension when solvent in ink being evaporated 7 quality % is set to γ _m2, the surface tension when solvent in ink being evaporated 12 quality % is set to γ _m3time, meet more than 2 in following condition (3-1), (3-2), (3-3), or meet each in following condition (4-1), (4-2), (4-3),

Condition (3-1): γ _m1-γ _m0> 0 (mN/m),

Condition (3-2): γ _m2-γ _m0> 0 (mN/m),

Condition (3-3): γ _m3-γ _m0> 0 (mN/m),

Condition (4-1): γ _m1-γ _m0>-0.05 (mN/m),

Condition (4-2): γ _m2-γ _m0>-0.05 (mN/m),

Condition (4-3): γ _m3-γ _m0>-0.05 (mN/m).

9. according to the ink composite in claim 1 ~ 8 described in wantonly 1, wherein, the content of described organic solvent relative to the total of the content of described pigment and described resin, for more than 1 times and below 10 times.

10. a combination, comprises the ink composite in claim 1 ~ 9 described in wantonly 1 and described ink reservoir.

11. 1 kinds of ink reservoirs are connected the ink reservoir used,

There is the ink chamber of the ink composite contained in claim 1 ~ 9 described in wantonly 1 and the ink inlet of described ink composite can be injected to described ink chamber.

12. 1 kinds of recording units, possess ink reservoir according to claim 11.