CN101090826A - Ink jet head cleaning device and method - Google Patents
Ink jet head cleaning device and method Download PDFInfo
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- CN101090826A CN101090826A CN200580045180.4A CN200580045180A CN101090826A CN 101090826 A CN101090826 A CN 101090826A CN 200580045180 A CN200580045180 A CN 200580045180A CN 101090826 A CN101090826 A CN 101090826A
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Abstract
The invention relates to a head liquid which is supplied to efficiently remove ink residues and the like which are attached to the surface of an inkjet head provided with ejection openings through which an ink containing a color material is ejected. In a case where a nonvolatile solvent such as glycerin is used as the head liquid, the nonvolatile solvent absorbs moisture, and thereby an extremely large change in mass is exhibited. As a result, the above supply amount is varied. To solve the problem, it was found that the previous mixing of water with the nonvolatile solvent can provide a smaller change in mass than that in a case where the nonvolatile solvent by itself is caused to absorb moisture. Accordingly, a mixture prepared by mixing the nonvolatile solvent and water in an appropriate predetermined ratio is used as a head liquid.
Description
Technical field
The present invention relates to be used for effectively to remove the ink gun liquid of ink residue on the surface that is formed with the inkjet mouth of ink gun (below be also referred to as record head) attached thereto (below be also referred to as jeting surface) etc.In addition, the present invention relates to determine this liquid constituent content method and stablize the method for the component ratio of this liquid, and the ink jet recording device that uses this liquid.
Background technology
The cleaning technique that is used for ink jet print head is an important factors of ink jet recording method, because this method is wherein to adopt liquid ink input image data to be converted to the system of output image as media.Subject matter in the needs cleaning has briefly been described below.
Ink jet print head directly is ejected into recording medium by fine nozzle (unless otherwise, these be called as jet, the fluid passage that is communicated with it jointly and be used to produce be used for the element of energy of ink-jet) with ink.Therefore, the ink that is ejected impacts on recording medium and bounce-back, and except when the ink-jet in record the related main ink, tiny ink droplet (adjunct) is injected in the atmosphere and drift therein in some cases.Then, these ink droplets become ink mist, and in some cases, are attached to around the inkjet mouth of record head.In addition, the dust that drifts about in air is attached on it sometimes.Subsequently, the main ink droplet that is ejected can be attracted by these attachment materials, makes inkjet direction skew thus, has hindered in some cases promptly that main ink droplet is straight to advance.
As the clean technologies that are used to address this problem, adopt the device be called as wiper to remove attachment material in ink jet recording device.This device with predetermined timing by by the elastomeric material jeting surface of Wiping member (wiper) the wiping record head made of rubber for example.
Simultaneously, the packing density of the material that writes down in order to improve, resistance to water, light resistance etc. have been used to comprise the ink (pigmented inks) of pigment component as colorant recently in many cases.By being dispersed in, colorant makes pigmented inks in the water, and by on surface of pigments, introducing dispersant or functional group, solid-state thereby described colorant is initially.Therefore, compare from the dry stickum of the dye-based ink that on molecular level, dissolves, by making the water evaporates that is arranged in the ink on the jeting surface and the more badly damaged jeting surface of dry matter of the dry paint ink that forms with colorant wherein.Also recognize such feature, the macromolecular compound that promptly is used for pigment is dispersed in the solvent is adsorbed on the jeting surface easily.Even reaction liquid is being joined in the ink so that in the ink except pigmented inks, also this problem can occur in the situation of the viscosity of control ink, thereby is improving light resistance and caused in ink, occurring macromolecular compound in addition.
In order to address these problems, in patent documentation 1 and 2, disclosed by with ink gun with liquid be applied on the jeting surface with the wearing and tearing that reduce wiper and in the wiping record head dissolving be accumulated in the technology that ink residue on the record head removes accumulated substance.And, by forming on the record head on ink gun prevents that with fluid film impurity is attached to record head, and improve the wiping convenience by these.Adopt the wherein employed ink gun structure of liquid storage in printer main body in these wipings.
In addition, in patent documentation 1 and 2, disclosed the cleaning by moving wiper with respect to jeting surface and before the previous step non-volatile solvents has been applied to step on the jeting surface as ink gun with liquid.But the disclosure of non-volatile solvents is few.Particularly, it is the polyethylene glycol (PEG) of 200-600 that patent documentation 1 has only disclosed molecular weight, and it is 300 polyethylene glycol (PEG300) that patent documentation 2 has only disclosed molecular weight.
The inventor has found a problem, and promptly when the method for using above-mentioned patent documentation to disclose before cleaning applies non-volatile solvents, great changes will take place to apply the condition of solvent to ink gun.When this problem of further research, the inventor finds that the reason that non-volatile solvents itself has is main.As long as use non-volatile solvents itself as ink gun liquid, those skilled in the art select non-volatile solvents according to evaporation characteristic usually naturally.Therefore, the inventor has studied not evaporable processing solvent when using solvent to use liquid as ink gun.In this research process, the inventor finds, is difficult to control the relation between the character of non-volatile solvents itself and the hygroscopicity that non-volatile solvents environment of living in causes.In addition, the discovery non-volatile solvents is great weight change owing to moisture absorption shows, and can't reduce the variation of above-mentioned applied amount thus.
Then, the inventor finds that technical problem underlying is the supply of coming stable liquid by the aforesaid liquid that actual inspection applies to jeting surface, to suppress weight (quality) variation that moisture absorption causes.When this problem of research, know that adding water in advance in non-volatile liquid wittingly can address the above problem.This is based on antipodal notion.
On the other hand, also have a problem so far, promptly because the variation of printer main body attitude, vibration etc. in assigning process, ink gun with leak of liquid beyond storage compartment.More specifically, how to make ink gun prevent that with liquid the leakage that causes owing to attitude, vibration etc. in the assigning process from being one major issue to be solved is arranged.In addition, the technology contents that ink gun changes with physical property of liquid (composition) due to the evaporation that prevents to cause because of environment change in the assigning process and should to take which kind of measure when the remarkable environmental change of generation also be that major issue to be solved is arranged.The ink gun that causes of evaporation with the change of physical property of liquid (compositions) can not make ink gun give full play to ink gun usefulness liquid at cleaning performance, so cause damage to jeting surface.In addition, when not only since the environment change in the assigning process and since the variation of printer environment for use when taking place ink gun, then take place with the change of physical property of liquid ink gun with liquid at the problem that can not fully carry out of record head cleaning.
Patent documentation 1: the open No.10-138503 of Japanese Patent Laid
Patent documentation 2: the open No.2000-203037 of Japanese Patent Laid
Summary of the invention
An object of the present invention is to provide the technology that solves above-mentioned at least one problem.Particularly, the present invention be suppress since printer in assigning process and the moisture absorption that causes of the environmental change in the use or the ink gun due to the evaporation with physical property of liquid (compositions) variation.In addition, be intended to stable any time the removal effectively attached to the ink residue on the record head jeting surface.In addition, be intended to prevent that liquid from leaking.
Therefore, first aspect present invention relates to a kind ofly can be applied to the lip-deep ink gun liquid of ink gun that is provided with therefrom the spray-hole that sprays the ink that contains colorant, it is characterized in that, contains the G ﹠ W of mass ratio in 75: 25 to 95: 5 scopes respectively.
Second aspect present invention relates to the ink gun liquid that is included in the container.
In these schemes, apply this ink gun liquid to the surface by the member that applies that moves with respect to the surface.In addition, ink can contain pigment as colorant.
A third aspect of the present invention relates to the method for a kind of definite ink gun with liquid component content, this ink gun can be applied on the ink gun surface that is provided with the spray-hole that therefrom sprays the ink that contains colorant with liquid, and contain the solvent that is pre-mixed and water as component, the amount that it is characterized in that definite water that mixes with non-volatile solvents, thereby make and compare that this ink gun with liquid less mass change takes place with the situation of the moisture absorption of non-volatile solvents own.
A fourth aspect of the present invention relates to the method for a kind of stable ink gun with the component ratio of liquid, this ink gun can be applied on the ink gun surface that is provided with the spray-hole that therefrom sprays the ink that contains colorant with liquid, and contain the solvent that is pre-mixed and water as the group component, it is characterized in that to ink gun supplementing water in the liquid, so that the ratio of the water that mixes with non-volatile solvents remains in the certain proportion scope, this proportion makes that with respect to the situation of the moisture absorption of non-volatile solvents own, ink gun with liquid less mass change takes place.
A fifth aspect of the present invention relates to a kind of ink-jet recording apparatus, it is characterized in that comprising: be provided with the ink gun surface that is used for containing the injection opening of paint ink by its injection in order to clean, control by any kind and driving apply the device of ink gun with liquid, and this ink gun contains the non-volatile solvents that is mixed with each other in advance and water as component with liquid; With device from supplementing water in the liquid to ink gun that use.
At this, ink gun can contain glycerine as non-volatile solvents with liquid, and the water replanishing device supplementing water, makes the mass ratio of G ﹠ W in 75: 25 to 95: 5 scope.
According to first aspect present invention, solved the problem of moisture absorption, and can stablize the character of ink gun with liquid.Except first aspect present invention,, can tackle the variation of tape deck subjective posture, vibration etc. in the assigning process according to second aspect present invention.According to third aspect present invention, provide of the guidance of stable ink gun with liquid property.According to fourth aspect present invention, even when the environment acute variation, also can keep the character of ink gun with liquid.According to fifth aspect present invention, keep the character of ink gun with liquid, can utilize its character to carry out the cleaning of jeting surface thus.
Description of drawings
Fig. 1 is for showing the figure of an experimental result, in this experiment, when 100% glycerine (being a kind of non-volatile liquid) and glycerine water solution (all being pre-mixed the water of predetermined mass ratio in each of two kinds of solution) when placing relatively-high temperature and high humidity environment, are disappeared in time and measure the weight change that moisture absorption causes.
Fig. 2 is for showing the figure of an experimental result, in this experiment, when glycerine water solution (water of predetermined mass ratio and glycerine are pre-mixed in this solution) when placing relatively-high temperature and low wet environment, is disappeared in time and measures the glycerol concentration variation that water evaporates causes.
Fig. 3 is for showing the figure of an experimental result, in this experiment, when 100% glycerine and glycerine water solution (all being pre-mixed the water of predetermined mass ratio in each of two kinds of solution) when placing relative low temperature and low wet environment, disappear in time and measure the variation of glycerol concentration.
Fig. 4 is the perspective schematic view of the major part of the ink-jet printer relevant with one embodiment of the invention.
Fig. 5 is a perspective view, demonstrates a structure embodiment of the record head on the balladeur train of the ink-jet printer that can be installed in Fig. 4.
Fig. 6 is a decomposition diagram, demonstrates a structure embodiment as the record head of the part of the record head of Fig. 5.
Fig. 7 is the part broken-open perspective view, demonstrates the structure around the jet array of single color on the recording element substrate in being used in the record head of Fig. 6.
Fig. 8 A is the key diagram of production stage of the recording element substrate of Fig. 7.
Fig. 8 B is the key diagram of production stage of the recording element substrate of Fig. 7.
Fig. 8 C is the key diagram of production stage of the recording element substrate of Fig. 7.
Fig. 8 D is the key diagram of production stage of the recording element substrate of Fig. 7.
Fig. 8 E is the key diagram of production stage of the recording element substrate of Fig. 7.
Fig. 8 F is the key diagram of production stage of the recording element substrate of Fig. 7.
Fig. 8 G is the key diagram of production stage of the recording element substrate of Fig. 7.
Fig. 9 is a schematic side elevation, demonstrates an embodiment of the cleaning device in the printer that is used in Fig. 4.
Figure 10 is the schematic diagram of operation that is used for the cleaning device of key diagram 5.
The figure of Figure 11 glycerol concentration variation when showing that the various ink guns that use in to each embodiment distribute test with liquid.
The specific embodiment
The present invention is described in detail with reference to these accompanying drawings below.
(basic design of the present invention)
Fig. 1 is for showing the figure of an experimental result, in this experiment, when with 100% glycerine (being a kind of non-volatile liquid) and glycerine water solution (in each of two kinds of solution, all being pre-mixed the water of predetermined mass ratio) when placing relatively-high temperature and high humidity environment, in time (my god) disappear and measure the weight change that moisture absorption causes.At this, this experiment is following to be carried out: the above-mentioned sample of equivalent is positioned over respectively in the culture dish, places under the relatively-high temperature high humidity environment of relative humidity of about 30 ℃ temperature and about 80%.
Can find by this result of experiment, compare that the weight change of the solution that is mixed with water is subjected to effective inhibition in advance with 100% glycerine.Although this mechanism is not illustrated as yet, it is generally acknowledged that liquid the mobile of hydrone stoped the hydrone under the water vapour state to be invaded from the outside.Also think glycerol molecule or its group in addition by hydrogen-bonded hydrone group encirclement, thereby stoped the hydrone of water vapour state to be invaded.This is a problem will studying future.But, under any circumstance, find when the water that mixes more than 5% or 5%, to have outstanding effect by above-mentioned experimental result.
Fig. 2 is for showing the figure of an experimental result, in this experiment, and for by in advance the water of predetermined mass ratio being mixed the glycerine water solution that prepare with glycerine, in time (my god) the glycerol concentration variation that causes of disappearance mensuration water evaporates.At this, this experiment is following to be carried out: the various glycerol mixture solution of equivalent are positioned over respectively in the culture dish, place the relatively-high temperature of the relative humidity of about 30 ℃ temperature and about 15% to hang down under the wet environment.Can find that by this result of experiment under the low wet environment of relatively-high temperature, glycerol concentration is elevated to 98% in the time of about 2 days, and is irrelevant with the original concentration of glycerine.
Fig. 3 is the figure of an experimental result of demonstration, in this experiment, and for 100% glycerine with by mix the glycerine water solution for preparing in advance with the water of predetermined mass ratio, in time (my god) disappear and measure the glycerol concentration variation that water evaporates causes.At this, this experiment is following to be carried out: the above-mentioned sample of equivalent is positioned over respectively in the culture dish, places under the relative low temperature and low humidity environment of about 5 ℃ temperature and about 15% relative humidity.Can find by this result of experiment, under relative low temperature and low humidity environment, glycerol concentration reaches balance near 95%, and is irrelevant with the original concentration of glycerine, even for the solution of the glycerine that contains high concentration (98% or 100%), moisture absorption makes concentration reduce to about 95%.And, can find that by this result of experiment if the content of water ratio is 25% or lower, then the change in concentration that causes owing to water evaporates can be suppressed.
The present invention determines to have proposed standard to the ink gun that will be applied to jeting surface with the contained non-volatile liquid of liquid such as the content of G ﹠ W, this jeting surface is provided with the jet that therefrom sprays the ink that contains colorant, should determine weight change of causing based on moisture absorption, or the variation of the above-mentioned glycerol concentration that causes of water evaporates.In other words, the present invention has a basic fundamental design, promptly measure the amount of the water that mixes with non-volatile liquid in advance in one way, thereby compare with the situation that makes the moisture absorption of non-volatile liquid own, less mass change takes place with liquid in ink gun, and the change in concentration that the while water evaporates causes is little.And the present invention has illustrated that it is 75: 25 to 95: 5 G ﹠ W than scope that the ink gun that will apply to jeting surface contains quality with liquid.
As mentioned above, by suppress not only in the printer use in the environmental change and also in its main body assigning process in the environmental change ink gun can at any time stably apply ink gun liquid, thereby stably clean record head with the variation of liquid.And the ink gun that has above-mentioned composition by preparation can obtain following effect with liquid.Particularly,
(1) inhibition that changes with liquid of ink gun
By in advance wittingly with the mixing ratio mixing water in the certain limit (for example, this factor that to be ink gun change with liquid weight), can suppress with various environment in moisture absorption or evaporate of the variation of relevant ink gun with liquid.
(2) stable applying
Even temperature etc. changes in the printer environment for use, also can stably apply ink gun liquid.
(3) clean-up performance
Based on above-mentioned (1) and (2) high-performance ground cleaning jeting surface.
(4) stability in the process such as distribution
By ink gun is dealt with relative rugged environment with liquid containing in container, for example, the assigning process that does not in use adopt, above-mentioned (2) and (3) can after realize in the uncommon environment for use that can not change dramatically.And, be used for preventing that leak of liquid and the adaptation distribution of prevention container and other extreme environment attitude that changes and the design condition of vibrating required physical property (composition) change from relaxing, because ink gun is less with the weight or volume change of liquid.
(embodiment of equipment)
Fig. 4 is the perspective schematic view of the major part of the ink-jet printer relevant with one embodiment of this invention.
Shown in ink jet recording device in, balladeur train 100 is fixed on the endless belt 5, and can move along guide shaft 3.Endless belt 5 is wrapped on a pair of belt pulley 503.The driving shaft of sledge drive motor (not shown) is connected one in the belt pulley 503 with that.Therefore, make balladeur train 100 reciprocally carry out main scanning in the figure the left and right directions along guide shaft 3 along with the pivotable drive motor.Removably keeping the balladeur train formula record head 1 of ink tank 2 to be installed on the balladeur train 100.
Fig. 5 is a perspective view, demonstrates a structure embodiment of the record head 1 on the balladeur train 100 that can be installed in Fig. 4.Fig. 6 is a decomposition diagram, demonstrates a structure embodiment as the head unit of the building block of record head 1.
The record head 1 relevant with current embodiment comprises head unit 400 and each ink tank 410 that all stores ink and ink is offered head unit 400 with the jet array that therefrom sprays ink.Record head 1 so is installed on the balladeur train 100, thereby be located at inkjet mouth array surface on the head unit 400 facing to as the paper 6 of recording medium, and top array direction and the direction that is different from the main scanning direction sub scanning direction of the throughput direction of recording medium 6 (for example, as) unanimity.Can be provided with its quantity one group inkjet mouth array corresponding and ink tank 410 with employed ink color quantity.In an illustrated embodiment, be provided with six groups accordingly with six kinds of colors (for example, black (Bk), cyan (C), magenta (M), yellow (γ), nattierblue (PC) and light magenta (PM)).In the record head 1 shown here, prepare the individual ink container 410 that is used for every kind of color, and each can be with respect to head unit 400 installation and removal.
As shown in Figure 6, head unit 400 forms member 470 by recording element substrate 420, first plate 430, wiring plate 440, second plate 450, pan straddle 460 and flow channel and constitutes.Recording element substrate 420 with the jet array that is used for respective color inks is adhesively fixed on by aluminium oxide (Al
2O
3) on first plate 430 made of material.In first plate 430, be formed with the ink supply port 431 that is used for providing ink to recording element substrate 420.Second plate 450 with opening is adhesively fixed on first plate 430 in addition.Second plate 450 is so keeping wiring plate 440, thereby the wiring plate 440 that applies the signal of telecommunication that is used for ink-jet is electrically connected with recording element substrate 420.On the other hand, flow channel is formed member 470 supersonic weldings be connected on the pan straddle 460 that is removably keeping ink tank 410, cross ink tank 410 thus and pass first plate, 430 formation ink flow path (not shown).
Fig. 7 is the part broken-open perspective view, demonstrates the structure around the jet array in single color that is used on the recording element substrate shown in Figure 6 420.In Fig. 7, label 421 expression heater elements (heater) are used for producing the heat energy that causes film boiling in ink as being used for the energy of ink-jet according to applying of electric current.The matrix 423 that heater 421 is installed thereon is provided with the temperature sensor 428 of the temperature that is used for sensing head unit 400 and is used for making record head or ink keep warm secondary heater (not shown) according to detected temperature.Label 422 expression inkjet mouths, label 426 expression ink flow path walls.Label 425 expression nozzle plates wherein are formed with inkjet mouth 426 under the state facing to each heater.This plate is arranged on the matrix 423, and resin coating layer 427 is arranged between them.And, on the surface of nozzle plate 425 (facing to the jeting surface of recording medium), be provided with desired hydrophobic material.
In current embodiment, be provided with two row heater 421 or jets 422, and heater or jet 422 in each row are that sub scanning direction is offset line-spacing each other half along orientation.In this respect, by arranging 128 heaters or jet 422 with each row of the density of 600dpi, thereby every kind of color ink has realized the resolution ratio of 1200dpi.Then, the structure of recording element substrate that will be corresponding with top six kinds of colors is arranged on first plate 430.
By using Fig. 8 A to Fig. 8 G that the method for making recording element substrate and jeting surface is described.
Fig. 8 A and 8B are respectively the perspective schematic view of recording element substrate 420 and its schematic cross sectional views of cutting open along VIIIB '-VIIIB ' line.A plurality of heaters 421 are arranged on the matrix of being made by silicon etc. 1 (the not shown electrode that applies to heater in electric current etc. that is used for).
Fig. 8 C is a schematic diagram, wherein uses positive photoresist that the ink flow path pattern is set on the matrix shown in Fig. 8 B 423 and forms material 433.Ink flow path form material 433 corresponding to be used to constitute temporary transient storage offer each jet ink common liquid chamber and tell to produce the pattern of the ink flow path of film boiling by heater from common liquid chamber.
Fig. 8 D is a schematic diagram, demonstrates wherein will be formed material 434 by the nozzle that negative photoresist is made and be formed on the ink flow path pattern shown in Fig. 8 C as the hydrophobic material 435 that comprises the negative photoresist of fluorine and siloxane molecule to form state on the material 433.In the current embodiment, spraying oralia 425 is formed by these materials.Can be by using hydrophobic material 435 to come to provide hydrophobic performance as jeting surface according to top mode.Optionally, can have desired surface property by changing to come with the material that nozzle forms combination of materials in this step jeting surface changed into.And, do not need in the situation of hydrophobic performance at jeting surface, can be by not using hydrophobic material but only use the jeting surface that nozzle material forms does not have hydrophobic performance.
Fig. 8 E demonstrates from the state of Fig. 8 D and begins by adopting the photoetch method to form the inkjet mouth 422 and the state of the ink channel of connection with it.Fig. 8 F demonstrates a kind of like this state, and wherein the state from Fig. 8 E begins to form ink supply port 424 by from the rear side of matrix 423 silicon being carried out anisotropic etching, suitably protects jet to form face side etc. simultaneously.Fig. 8 G demonstrates a kind of like this state, and wherein the state from Fig. 8 F begins to finish recording element substrate by elution ink channel formation pattern material 4333.The recording element substrate of finishing like this 420 is arranged on first plate 430.In addition, for example, on each part, connect and electric installation, and obtain thus in the structure shown in Fig. 5.
With reference to Fig. 4, recording medium 6 is carried off and on along the direction vertical with the scanning direction of balladeur train 100 again.Recording medium 6 supports and is subjected to certain tension force by the pair of rolls subelement (not shown) on upstream side that is located at throughput direction respectively and the downstream, carries in smooth with respect to the inkjet mouth maintenance then.The record on the width corresponding with the arrangement width of the jet of head unit 1 that alternately repeats then to carry out along with the conveying of the motion of balladeur train 100 and recording medium 6 is thus at whole recording medium 6 enterprising line items.Shown equipment is provided with and is used to detect the linear encoder 4 of balladeur train along the movement position of main scanning direction.
Fig. 9 is a schematic side elevation, demonstrates related to the present invention and from the embodiment of the cleaning device seen by the direction shown in the arrow of Fig. 4.
By elastic component for example the wiping scraper plate 9A and the 9B that make such as rubber be fixed on the wiper support 10.Wiper support 10 can be along the left and right directions shown in the figure (direction vertical with the main scanning direction of record head 1, and inkjet mouth is arranged along this direction) motion. Wiping scraper plate 9A and 9B in height differ from one another.Therefore, when the jeting surface 11 of sliding-contact record head 1, the former bending is relatively large, therefore make its sidepiece contact jeting surface 11, and latter's bending is less relatively, therefore makes head portion contact jeting surface 11.
Be provided with therefrom the ink gun surface of spraying the jet that contains the colorant ink in order to clean, control and driving by any kind apply the device of ink gun with liquid, and this ink gun contains the non-volatile solvents that is mixed with each other in advance and water as component with liquid; With
To the device of ink gun with supplementing water in the liquid.
In clean operation, at first,, the wiping scraper plate transmits ink gun liquid by being contacted with feeding mechanism 12 making record head 1 wait in the state in the position of departing from original position or before record head 1 moves to original position.Then, make the position of wiper support 10 shown in turning back in the figure, and record head is arranged in the original position, and make wiper support 10 afterwards again along moving by the direction shown in the arrow.In this motion process, begin relatively long wiping scraper plate 9A and contacts jeting surface 11 at first slidably, and following than short wiping scraper plate 9B relatively and moving.
Figure 10 is the key diagram of this process.Wiping scraper plate 9A bending is relatively large, and therefore its sidepiece sliding-contact jeting surface 11 with effectively with ink gun with liquid 16 transmission and be applied on the jeting surface 11.Even exist on the jeting surface 11 under the situation of ink residue 1104, with liquid 16 ink residue 1104 is dissolved by applying ink gun.Under this state, the head portion (edge) of wiping scraper plate 9B contact jeting surface 11 is so that wipe the dissolved substance of ink residue off effectively.Thereby carry out the cleaning of record head.
It is to be noted that because wiping, the dissolved substance of ink residue is attached on the wiping scraper plate.It under the gravity effect along the wiping scraper plate when dirty, the position that can be provided at the wiper support 10 shown in being lower than receives its member.But, be preferably in be provided for contacting wiping scraper plate 9A and 9B near the feeding mechanism 12 device (sponge, strigil etc.) to receive dissolved substance on one's own initiative from wiping scraper plate or top process, clean wiping scraper plate thus.If ink gun making the wiping scraper plate be in transmission afterwards in the state of cleaning, then can be prepared wiping operation next time with liquid immediately.
When carrying out this cleaning, also preferably use the composition of ink gun of the present invention with liquid.The material of wiping scraper plate, shape, size and should be so definite with respect to the position of sliding-contact target, thereby along with obtaining desired conveying capacity (send the amount of wiping scraper plate to and send the amount of jeting surface from the wiping scraper plate to from feeding mechanism) with feeding mechanism 12 and jeting surface 11 sliding-contacts.This is because can not obtain desired conveying capacity when the ink gun that is caused by environmental change changes greatly with liquid weight and physical property, may occur clean-up performance thus and reduce.
To illustrate by way of example that below more specific embodiment and comparing embodiment verify effect of the present invention.
(embodiment)
Ink gun is tested with the distribution of the container of liquid
Use among this embodiment and have the ink gun liquid of forming shown in the table 1.
Table 1
| Ink gun liquid | Glycerine | Water |
| |
?95％ | 5％ |
| |
?80％ | 20％ |
| |
?75％ | 25％ |
These ink guns are filled into the ink tank " BCI-3e color " (can buy from CanonInc.) with liquid.Ink tank is placed the baking box of the uniform temperature (60 ℃) that is arranged at the used environment of assigning process.Observe the state of ink gun then with the liquid evaporation.It is pointed out that thereby ink tank comprises first liquid chamber part of direct storage ink and is used for injecting and holding ink produces the absorber of preferred negative pressure at the record head nozzle the second liquid chamber part.And, at this moment, consider the distribution that still is fixed on the ink tank on the printer main body, remove the protective cap that is used to protect the ink tank jeting surface.
At first, table 2 shows the observed result that sample leaves standstill liquid in two all backs ink tanks.
Table 2
| Ink gun liquid | The ink gun state of liquid in the container |
| |
There is little air in first liquid chamber |
| |
There is little air in first liquid chamber |
| |
There is little air in first liquid chamber |
The variation of glycerol concentration has been shown among Figure 11.
Arrive any in " ink gun liquid 3 " for " the ink gun usefulness liquid 1 " that relates at this embodiment, do not observe weight change, because liquid contains an amount of water.Observe the change in concentration relevant by the result of above-mentioned distribution test and be suppressed to less degree with water evaporates.
The wiping durability test
Use " ink gun with liquid 1 " that use in the above-mentioned distribution test to " ink gun with liquid 3 " to carry out the wiping durability test then.Here, suppose the environment of practical application, use printer to repeat the operation of 5000 cleaning jeting surfaces continuously, with before the observation test and the variation of recording status afterwards.
The condition of durability test is as follows.
The main body that is used to assess: the main body that is used for assessing is that the recovery system to the jet printer " PIXUS850i " that can buy from Cannon Inc. as shown in Figure 4 changes and produces.
The ink gun that is used for assessing is with liquid and container: the form of using above-mentioned allocation for test to use substantially.But need to prove, change, thereby make the sliding-contact of wiping scraper plate and ink gun become satisfactory with the transmission of liquid.
The environment that is used to assess:, after leaving standstill for 2 weeks under 60 ℃,, under the room temperature of 30 ℃ and 15 ℃, test as actual environment for use at sample by identical as mentioned above method.
The ink that is used for assessing: will have at the ink of forming shown in the table 3 attached to the colored bottle position of record head to assess.
Table 3
| Form | Ink i (dispersion+polymer certainly) | Ink ii (dyestuff+polymer) | Ink iii (resin dispersion pigment) | ||
| | Glycerine | 5％ | 5％ | 5％ | |
| Diethylene glycol (DEG) | 5％ | 5％ | 5％ | ||
| Surfactant | Acetylenol?EH ***(note 1) | 0.2％ | 0.2％ | 0.2％ | |
| Colorant | CABOJET 300 (solids fraction) (from dispersed color) ***(note 2) | 4％ | - | - | |
| CI.DBL:199 (soluble dye) | - | 3％ | - | ||
| Pigment dispersion liquid 1 ***(note 3) | - | 50％ | |||
| Polymer | Styrene/acrylic acid co-polymer (molecular weight: 10000, acid number: 100) | 2％ | 1％ | - | |
| Water | Surplus | Surplus | Surplus | ||
(note 1) can be from Kawaken Fine Chemicals Co., the brand name Acetylenol that LTD. has bought
(note 2) can from Cabot Corporation bought from dispersed color
(note 3) is by using the dispersible pigment dispersion 1 of following method preparation
With 10 parts of its specific areas is 210m
2/ g and its DBP oil uptake is that the carbon black of 74ml/100g, 20 parts of acid numbers are 200 and weight average molecular weight is in 10% NaOH of 10000 styrene-propene acid copolymer and the aqueous solution and 70 parts of ion exchange waters mix.After mixing, use sand milling to disperse this mixture 1 hour, remove big particle by centrifugal separation method.Subsequently, using the aperture is that the microfilter (can buy from FUJIFILM Corporation) of 3.0 μ m carries out pressure filtration to obtain to comprise the pigment dispersion liquid 1 of resin dispersion type pigment to mixture.The pigment dispersion liquid 1 that is obtained has following physical characteristic value, and solids content is 10%, and the pH value is 10.0, and average grain diameter is 120nm.
Assessment result
By under the temperature conditions of 30 ℃ and 15 ℃, observing before durability test and recording status afterwards changes and assesses.At this moment, the nozzle check pattern that is structured in the printer main body is recorded on the special-purpose paper of high-quality to observe the misalignment (deviation) that ink dot forms the position.Adopt following Three Estate to assess.
Zero: obtain gratifying printing, and deviation do not occur in the nozzle check pattern (not having difference) with the print quality that when common ink being used in the main body that does not change printer, is obtained
△: in a part of nozzle check pattern, deviation occurs
*: deviation appears in the whole zone of nozzle check pattern
Assessment result under each temperature is shown in table 4 and the table 5.
Table 4: durability evaluating (30 ℃ of environment)
| Ink gun liquid | Ink i | Ink ii | Ink iii |
| |
?○ | ?○ | ?○ |
| |
?○ | ?○ | ?○ |
| |
?○ | ?○ | ?○ |
Table 5: durability evaluating (15 ℃ of environment)
| Ink gun liquid | Ink i | Ink ii | Ink iii |
| |
?○ | ?○ | ?○ |
| |
?○ | ?○ | ?○ |
| |
?○ | ?○ | ?○ |
(comparing embodiment)
Use have shown in the table 6 ink gun formed with liquid carry out with this embodiment in the identical test of durability test.
Table 6
| Ink gun liquid | Glycerine | Water |
| |
?100％ | 0％ |
| |
?50％ | 50％ |
Assessment result is as follows.
Table 7: durability evaluating (30 ℃ of environment)
| Ink gun liquid | Ink i | Ink ii | Ink iii |
| |
?○ | ?○ | ?○ |
| |
?○ | ?○ | ?○ |
Table 8: durability evaluating (15 ℃ of environment)
| Ink gun liquid | Ink i | Ink ii | Ink iii |
| Ink gun liquid 4 | × | × | × |
| Ink gun liquid 5 | × | × | × |
Shown in these, " ink gun with liquid 4 " and " ink gun with liquid 4 " shows gratifying assessment result under 30 ℃ of environment, still under 15 ℃ of environment in the whole region generating deviation of nozzle check pattern.
Effect of the present invention confirms as mentioned above.Sample is being placed the baking box that is set to 45 ℃ left standstill for 2 weeks or longer, carrying out in the situation of allocation for test afterwards and further carry out in the situation of durability test, situation also is the same.In addition, have and above-mentioned difform ink tank filling with above-mentioned " ink gun with liquid 1 " to " ink gun with liquid 3 ", for example, the BCI-7 from Canon Inc. has bought when carrying out allocation for test and durability test, obtains gratifying result.
Need to prove, in the above-described embodiments, enumerated following embodiment: ink gun is sent on the wiping scraper plate with liquid, makes it on jeting surface, carry out wiping afterwards, to clean.But, present invention is not limited in this respect.For example, also can adopt a kind of structure, wherein use the member that is different from wiper that ink gun is applied (providing) to jeting surface with liquid, carry out wiping afterwards.This is because the ink gun with composition of the present invention is preferred for liquid even advantageously transmits (providing) ink with this form.
As mentioned above, should be appreciated that ink gun of the present invention is a key factor with water in the liquid for the mixing ratio of solvent.When ink gun changes or superposes with the solvent species of liquid, determine its ratio by judging their characteristics in aforesaid way, its practical application is possible.Aspect this, a preferred aspect of the present invention is, a kind of definite ink gun method of liquid component content, the amount that it is characterized in that definite water that will mix with non-volatile solvents, thereby make and compare that ink gun with liquid less mass change takes place with the situation that makes the moisture absorption of non-volatile solvents own.Here, ink gun can be applied on the ink gun surface that is provided with therefrom the jet that sprays the ink that contains colorant with liquid, and contains the non-volatile solvents that is pre-mixed and water as component.Need to prove that ink gun of the present invention can wait by the additive that adds mixing ratio to solvent and water and not have to influence with liquid and prepare.
The application has required the priority of Japanese patent application No.2004-381749 that submits to based on December 28 in 2004 and the Japanese patent application No.2005-235404 that submitted on August 15th, 2005, and these Japanese patent applications are combined in here as a reference.
Claims (according to the modification of the 19th of treaty)
1. one kind is applied to the lip-deep ink gun liquid of ink gun by the member that applies with respect to apparent motion, this ink gun surface is provided with therefrom to spray contains the jet of pigment as the ink of colorant, it is characterized in that, will be applied to the lip-deep ink gun of ink gun and be applied to described applying on the member, and form by the G ﹠ W that mass ratio is respectively in 75: 25 to 95: 5 scopes with liquid.
2. ink gun liquid as claimed in claim 1 is characterized in that this ink gun is comprised in the container with liquid, and ink gun is applied to this with liquid applies on the member by move the described member that applies with respect to described container.
3. a definite ink gun is with the method for the constituent content of liquid, this ink gun can be applied on the ink gun surface that is provided with the jet that therefrom sprays the ink that contains colorant with liquid, and contain the non-volatile solvents that is pre-mixed and water as component, it is characterized in that, the amount of definite water that mixes with non-volatile solvents, thereby make and compare that ink gun with liquid less mass change takes place with the situation that makes the moisture absorption of non-volatile solvents own.
4. a stable ink gun is with the method for the component ratio of liquid, this ink gun can be applied on the ink gun surface that is provided with the jet that therefrom sprays the ink that contains colorant with liquid, and contain the non-volatile solvents that is pre-mixed and water as component, it is characterized in that may further comprise the steps, to ink gun supplementing water in the liquid, so that the ratio of the water that mixes with non-volatile solvents remains in the certain proportion scope, this proportion makes and compares with the situation that makes the moisture absorption of non-volatile solvents own that less mass change takes place ink gun liquid.
5. ink jet recording device is characterized in that comprising:
Be used to apply and contain the non-volatile solvents that is pre-mixed and water, be used to clean be provided with therefrom to spray and contain the ink gun surface of pigment as the jet of the ink of colorant as the ink gun of component device with liquid;
Be used for ink gun is applied to ink gun liquid container on the bringing device with liquid;
Be used for using the device of moisturizing in the liquid to the described ink gun ink gun contained with liquid container,
Wherein said ink gun contains glycerine as non-volatile solvents with liquid, and described water replanishing device supplementing water, makes the mass ratio of G ﹠ W respectively in 75: 25 to 95: 5 scope.
Claims (8)
1. one kind can be applied to the lip-deep ink gun liquid of ink gun, this ink gun surface is provided with the jet that therefrom sprays the ink that contains colorant, it is characterized in that this ink gun contains mass ratio with liquid and is respectively 75: 25 to 95: 5 G ﹠ Ws in the scope.
2. ink gun liquid as claimed in claim 1 is characterized in that this ink gun is comprised in the container with liquid.
3. ink gun liquid as claimed in claim 1 or 2 is characterized in that, applies this ink gun liquid by the member that applies that moves with respect to the surface to the surface.
4. as each described ink gun liquid in the claim 1 to 3, it is characterized in that described ink contains pigment as colorant.
5. a definite ink gun is with the method for the constituent content of liquid, this ink gun can be applied on the ink gun surface that is provided with the jet that therefrom sprays the ink that contains colorant with liquid, and contain the non-volatile solvents that is pre-mixed and water as component, it is characterized in that, the amount of definite water that mixes with non-volatile solvents, thereby make and compare that ink gun with liquid less mass change takes place with the situation that makes the moisture absorption of non-volatile solvents own.
6. a stable ink gun is with the method for the component ratio of liquid, this ink gun can be applied on the ink gun surface that is provided with the jet that therefrom sprays the ink that contains colorant with liquid, and contain the non-volatile solvents that is pre-mixed and water as component, it is characterized in that may further comprise the steps, to ink gun supplementing water in the liquid, so that the ratio of the water that mixes with non-volatile solvents remains in the certain proportion scope, this proportion makes and compares with the situation that makes the moisture absorption of non-volatile solvents own that ink gun with liquid less mass change takes place.
7. ink jet recording device is characterized in that comprising:
Apply and contain the non-volatile solvents that is pre-mixed and water, be used to clean and be provided with the ink gun surface of therefrom spraying the jet of the ink that contains colorant as the ink gun of component device with liquid; With
To the device of ink gun with moisturizing in the liquid.
8. ink jet recording device as claimed in claim 7 is characterized in that described ink gun contains glycerine as non-volatile solvents with liquid, and described water replanishing device supplementing water, makes the mass ratio of G ﹠ W respectively in 75: 25 to 95: 5 scope.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP381749/2004 | 2004-12-28 | ||
| JP2004381749 | 2004-12-28 | ||
| JP235404/2005 | 2005-08-15 | ||
| JP2005235404A JP4812078B2 (en) | 2004-12-28 | 2005-08-15 | Inkjet recording device |
| PCT/JP2005/023849 WO2006070777A1 (en) | 2004-12-28 | 2005-12-27 | Liquid for head, method of determining component content thereof and method of stabilizing component ratio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101090826A true CN101090826A (en) | 2007-12-19 |
| CN101090826B CN101090826B (en) | 2010-05-12 |
Family
ID=38943735
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800451791A Expired - Fee Related CN101090825B (en) | 2004-12-28 | 2005-12-27 | Ink jet head cleaning device and method |
| CN2005800451804A Expired - Fee Related CN101090826B (en) | 2004-12-28 | 2005-12-27 | Liquid used for ink jet head, method for determining its constituent contents and method for stablizing constituent proportions |
| CNB2005800451876A Expired - Fee Related CN100572074C (en) | 2004-12-28 | 2005-12-27 | The method and the ink jet recording device of cleaning ink gun |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800451791A Expired - Fee Related CN101090825B (en) | 2004-12-28 | 2005-12-27 | Ink jet head cleaning device and method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800451876A Expired - Fee Related CN100572074C (en) | 2004-12-28 | 2005-12-27 | The method and the ink jet recording device of cleaning ink gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN101090825B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5656916B2 (en) * | 2012-05-21 | 2015-01-21 | 京セラドキュメントソリューションズ株式会社 | Wiping mechanism and ink jet recording apparatus having the same |
| US20150091980A1 (en) * | 2013-09-30 | 2015-04-02 | Kyocera Document Solutions Inc. | Recording-head recovery system, ink-jet recording apparatus including the same, and recording-head recovery method |
| US10599034B2 (en) * | 2017-08-21 | 2020-03-24 | Funai Electric Co., Ltd. | Method for manufacturing MEMS devices and nano devices with varying degrees of hydrophobicity and hydrophilicity in a composite photoimageable dry film |
| EP3717261B1 (en) * | 2018-01-31 | 2024-05-08 | Hewlett-Packard Development Company, L.P. | Cleaning nozzles of a print apparatus |
| CN110039904B (en) * | 2019-03-14 | 2024-04-26 | 广州精陶机电设备有限公司 | Ink scraping method of spray drawing system and ink scraping mechanism applying same |
| JP7420575B2 (en) * | 2020-02-03 | 2024-01-23 | 理想科学工業株式会社 | wiper mechanism |
| JP2022085432A (en) * | 2020-11-27 | 2022-06-08 | 理想科学工業株式会社 | Wiper mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5706038A (en) * | 1994-10-28 | 1998-01-06 | Hewlett-Packard Company | Wet wiping system for inkjet printheads |
| US5949448A (en) * | 1997-01-31 | 1999-09-07 | Hewlett-Packard Company | Fiber cleaning system for inkjet printhead wipers |
| DE69938285T2 (en) * | 1998-12-15 | 2009-03-12 | Canon K.K. | inkjet |
| US6669327B1 (en) * | 2002-06-07 | 2003-12-30 | Hewlett-Packard Development Company, L.P. | Ink solvent delivery apparatus |
| US6893110B2 (en) * | 2003-04-21 | 2005-05-17 | Hewlett-Packard Development Company, L.P. | Printer wiper blades based on surface energy |
-
2005
- 2005-12-27 CN CN2005800451791A patent/CN101090825B/en not_active Expired - Fee Related
- 2005-12-27 CN CN2005800451804A patent/CN101090826B/en not_active Expired - Fee Related
- 2005-12-27 CN CNB2005800451876A patent/CN100572074C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100572074C (en) | 2009-12-23 |
| CN101090825A (en) | 2007-12-19 |
| CN101090825B (en) | 2010-05-12 |
| CN101090826B (en) | 2010-05-12 |
| CN101090827A (en) | 2007-12-19 |
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