CN104290455B - A kind of ink-feeding device and the forming method of print nozzles surface meniscus - Google Patents
A kind of ink-feeding device and the forming method of print nozzles surface meniscus Download PDFInfo
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- CN104290455B CN104290455B CN201310303870.1A CN201310303870A CN104290455B CN 104290455 B CN104290455 B CN 104290455B CN 201310303870 A CN201310303870 A CN 201310303870A CN 104290455 B CN104290455 B CN 104290455B
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- ink
- ink reservoir
- print nozzles
- pressure
- feeding device
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Abstract
The present invention provides a kind of ink-feeding device, including supplying ink reservoir, print nozzles and being connected to for the ink tube between ink reservoir and print nozzles, wherein, described ink-feeding device also includes air pressure feed unit, its atmospheric pressure value in also regulating for ink reservoir for the air pressure stable for ink reservoir offer, to ensure that ink supplies to print nozzles via ink tube from for ink reservoir, the described liquid level being less than in print nozzles for the liquid level in ink reservoir, to ensure that the surface of print nozzles forms meniscus.Correspondingly, it is provided that the forming method of print nozzles surface meniscus in a kind of above-mentioned ink-feeding device.Ink-feeding device of the present invention can make up the insufficient pressure in existing gravity ink supply mode, and can preferably regulate the meniscus on print nozzles surface.
Description
Technical field
The present invention relates to ink-jet printing technology field, be specifically related to a kind of ink-feeding device and beat
The forming method of ink head surface meniscus.
Background technology
Digital printing is the printing technology of high speed development in recent years, and it uses data direct
Input, the working method processing and printing, and ink jet printing is one in digital printing
Branch, the ink-jet printing apparatus of existing a lot of manufacturers uses piezoelectric type shower nozzle (also referred to as
For print nozzles) technology.As shown in Figure 1-2, ink-jet printing apparatus prints in reality
During, in order to ensure print quality, it is undesirable to ink is in the surface shape of print nozzles 1
Become little ink droplet 11, and be desirable to ink and fall in the surface of print nozzles 1 formation one
Liquid level, i.e. meniscus 12, because the formation of meniscus ensure that print nozzles only exists
Ink droplet injection is just had, so that not having the phase on printed medium (such as paper) during compression
Ink droplet outside prestige occurs, it is ensured that the cleaning of printed medium, improves the quality of printing.
Simultaneously as the shape of print nozzles surface meniscus also can affect ink-jet printing apparatus
Whole print quality, therefore also has higher requirement to the shape of meniscus.In order to protect
Card meniscus can well be formed, and often proposes the ink feeding system of responsible providing ink very
High requirement, and ink feeding system is one of most important part in whole ink-jet printing system.
At present, the ink supply mode of ink feeding system has multiple, and wherein gravity ink supply mode is passed through
Maintain print nozzles and control to print for pressure produced by the difference in height of ink reservoir interstitial fluid position
The formation of ink head surface meniscus.Above-mentioned ink supply mode reduces the curved liquid in print nozzles surface
The control difficulty in face, and can be entered the most easily by the method changing the difference in height of liquid level
The regulation of row pressure.But, due to limited in space, print nozzles and confession ink reservoir
Between the difference in height of liquid level can be only sustained at about 10cm, pressure produced by this difference in height
Short distance (< 2m), pipe with small pipe diameter (external diameter < 3/8 inch, internal diameter < 1/4 inch)
Ink feeding system can preferably be operated, say, that the ink feeding system of this kind of structure
Requiring print nozzles and must not be too far away for the distance between ink reservoir, the caliber of ink tube can not be too
Greatly, because once print nozzles and for the caliber away from too far away or ink tube between ink reservoir too
Greatly, the insufficient pressure that may result in the difference in height by liquid level and obtain will be well will
Ink feed is to print nozzles；Meanwhile, when carrying out pressure regulation, due to print nozzles
And for there being the existence of ink tube between ink reservoir, even if being substantially increased the height of liquid level
Difference, the regulation of print nozzles surface meniscus is also bad control, such as regulating time
Long, degree of regulation is the poorest, and meniscus shape is undesirable.And, in reality
In production, sometimes print nozzles with for ink reservoir cannot close proximity, the caliber of ink tube is also
May be relatively thick, use the ink feeding system of existing gravity ink supply mode to be produced in this case
Pressure cannot ensure that ink preferably supplies to print nozzles at all, also cannot ensure beat
The good formation of ink head surface meniscus.
Summary of the invention
The technical problem to be solved be for prior art in the presence of above-mentioned
Defect, it is provided that it is preferable that one can make up insufficient pressure and energy in existing gravity ink supply mode
The ink-feeding device of ground regulation print nozzles surface meniscus and print nozzles surface meniscus
Forming method.
The technical scheme that solution the technology of the present invention problem is used:
Described ink-feeding device includes for ink reservoir, print nozzles and is connected to for ink reservoir and beats
Ink tube between ink head, wherein, described ink-feeding device also includes air pressure feed unit,
Its atmospheric pressure value in also regulating for ink reservoir for the air pressure stable for ink reservoir offer, with
Ensure that ink supplies to print nozzles via ink tube from for ink reservoir, described in ink reservoir
Liquid level is less than the liquid level in print nozzles, to ensure that the surface of print nozzles forms meniscus.
Preferably, described air pressure feed unit includes source of the gas and pressure regulon unit；Institute
State source of the gas for the air pressure stable for ink reservoir offer；Described pressure regulon unit is used for
When ink-feeding device works, regulation source of the gas is to the atmospheric pressure value provided for ink reservoir, thus regulates confession
Atmospheric pressure value in ink reservoir, and make when ink-feeding device quits work for ink reservoir and big gas phase
Logical.
Preferably, described pressure regulon unit includes pressure-regulating valve and three-way valve.
Preferably, described ink-feeding device also includes the first pressure monitoring unit, and it is for real
Time monitoring source of the gas to for ink reservoir provide atmospheric pressure value.
Preferably, described ink-feeding device also includes filter element, and described filter element is arranged
Between source of the gas and confession ink reservoir.
Preferably, filtering accuracy < 20 μm of described filter element.
Preferably, described ink-feeding device also includes the second pressure monitoring unit, and it is for real
Time monitoring for the atmospheric pressure value in ink reservoir.
Preferably, described lower than the liquid level in print nozzles for the liquid level in ink reservoir
8mm～10mm.
The present invention also provides for the shape of print nozzles surface meniscus in a kind of above-mentioned ink-feeding device
One-tenth method, comprises the steps:
1) open air pressure feed unit, and be stepped up air pressure feed unit to supplying ink reservoir to carry
The air pressure of confession；
2) print nozzles is monitored in real time, during until the surface of print nozzles forms little ink droplet,
Control air pressure feed unit and stop pressurization, and keep current pressure；
3) regulation is for the liquid level in ink reservoir so that it is less than the liquid level in print nozzles, with
The surface of print nozzles forms meniscus.
Preferably, in described step 3), regulation is for the liquid level in ink reservoir so that it is ratio is beaten
Low 8mm～10mm of liquid level in ink head.
Beneficial effect:
Ink-feeding device of the present invention compared with prior art, can be for supplying owing to adding
Ink reservoir provides to be stablized air pressure and can regulate the air pressure feed unit of its internal gas pressure value, solves
Because of print nozzles with for ink reservoir interstitial fluid position difference in height produced by insufficient pressure and cannot be very
Well by the problem of ink feed to print nozzles, i.e. compensate for existing gravity ink supply mode
In insufficient pressure, described air pressure feed unit is by coordinating print nozzles and between ink reservoir
The difference in height of liquid level, just can by ink preferably in the case of being not required to provide bigger pressure
It is fed to print nozzles, and forms good meniscus on the surface of print nozzles, meanwhile,
Can also be realized print nozzles with the difference in height for ink reservoir interstitial fluid position by regulation print nozzles
The well-tuned of surface meniscus shape.Even if therefore ink-feeding device of the present invention is applied to
At a distance, extra heavy pipe footpath (i.e. print nozzles and distant between ink reservoir, ink tube
Caliber is bigger) in the case of, it is also possible to by the regulation of air pressure feed unit in ink reservoir
Air pressure thus quickly and efficiently by ink feed to print nozzles, and can be to print nozzles
The meniscus on surface preferably adjusts, and compared with prior art saves regulating time,
Improve degree of regulation, improve print quality, and can more convenient, more stably should
In actual production.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the surface of print nozzles forms little ink droplet；
Fig. 2 is the schematic diagram of the surface formation meniscus of print nozzles；
Fig. 3 is the structural representation of ink-feeding device described in the embodiment of the present invention 1；
Fig. 4 is the structural representation of ink-feeding device described in the embodiment of the present invention 2.
In figure: 1-print nozzles；The little ink droplet of 11-；12-meniscus；2-ink tube；
3-is for ink reservoir；4-three-way valve；5-pressure-regulating valve；6-the first Pressure gauge；7-mistake
Filter；8-the second Pressure gauge.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, knot below
Close drawings and Examples to ink-feeding device of the present invention and print nozzles surface meniscus
Forming method is described in further detail.
Embodiment 1:
As it is shown on figure 3, the present embodiment provides a kind of ink-feeding device, including for ink reservoir, confession
Mo Guan, print nozzles and air pressure feed unit.
Described confession ink reservoir is used for storing ink, and can be changed for the height of ink reservoir by regulation
Become the relative altitude of its inside liquid level, thus change print nozzles and supply ink reservoir interstitial fluid position
Liquid level in difference in height, and described confession ink reservoir should be less than the liquid level in print nozzles.Described
Ink tube is connected to, between ink reservoir and print nozzles, be used for supply for the ink in ink reservoir
Give to print nozzles.Described print nozzles is for by expecting to printed medium (such as paper)
Upper ink-jet, to form mimeograph documents.Preferably, described for the liquid level ratio printing in ink reservoir
Low 8mm～10mm of liquid level in ink head.
Described air pressure feed unit is for for providing stable air pressure for ink reservoir and can regulate confession
Atmospheric pressure value in ink reservoir, to ensure that ink supplies to stamping ink via ink tube from for ink reservoir
Head, coordinates print nozzles and the difference in height for ink reservoir interstitial fluid position (for the liquid in ink reservoir simultaneously
Position is less than the liquid level in print nozzles) good curved liquid can be formed on the surface of print nozzles
Face, regulates printing also by regulation print nozzles with the difference in height for ink reservoir interstitial fluid position
The shape of ink head surface meniscus.
Preferably, described air pressure feed unit includes source of the gas and pressure regulon unit.Institute
State source of the gas for for ink reservoir conveying air (can by air compressor machine produce compressed air),
With to the air pressure stable for ink reservoir offer.Described pressure regulon unit is for filling in ink supply
When putting work, regulation source of the gas is to the atmospheric pressure value provided for ink reservoir, thus regulates in ink reservoir
Atmospheric pressure value, and make when ink-feeding device quits work to communicate with air for ink reservoir, to unload
Carry for the pressure in ink reservoir, thus avoid when ink-feeding device quits work, due to ink supply
There is also pressure (i.e. for the air pressure in ink reservoir more than atmospheric pressure) in pond and cause stamping ink
Head continues to drip ink, and causes the situation that printed medium pollutes.Model as described atmospheric pressure value
Enclosing, those skilled in the art can be according to practical situation, such as print nozzles and between ink reservoir
The situations such as the difference in height of distance, the caliber of ink tube, print nozzles and confession ink reservoir interstitial fluid position
Choose voluntarily.Described pressure regulon unit includes pressure-regulating valve and three-way valve.More excellent
Selection of land, described ink-feeding device also includes the first pressure monitoring unit, and it is for monitoring in real time
Source of the gas is to the atmospheric pressure value provided for ink reservoir, in order to pressure regulon unit carries out pressure tune
Atmospheric pressure value can be preferably quantified, it is ensured that degree of regulation during joint；Described first pressure prison
Survey unit and can use existing Pressure gauge.There is a kind of oil water separator in the market, its
Combine the functions such as oil-water separation, air pressure adjustment and pressure show, therefore profit can be used to divide
The pressure-regulating valve in described pressure regulon unit and the first pressure monitoring list is substituted from device
Unit.
Preferably, described ink-feeding device also includes filter element, and described filter element is arranged
At source of the gas and between ink reservoir, supply avoiding the impurity in the air that source of the gas provided to enter
Ink reservoir internal contamination ink；Filtering accuracy < 20 μm of described filter element.Wherein, described
Filtering accuracy refers to the aperture of the filter element of filter element, and the solution i.e. comprising impurity passes through
The size of the largest particles passed through is allowed during drainage screen.Described filter element can use existing
Filter.
Preferably, described ink-feeding device also includes the second pressure monitoring unit, and it is for real
Time monitoring for the atmospheric pressure value in ink reservoir, the most normal to judge the current state of ink-feeding device.
Such as, when ink-feeding device quits work, should be zero for the atmospheric pressure value in ink reservoir, ink supply fills
Put when normally working, just should be for the atmospheric pressure value in ink reservoir；When ink-feeding device goes wrong
Time, pressure transient at source of the gas such as occurs, in ink-feeding device supplies ink reservoir after quitting work
Atmospheric pressure value be not zero etc. situation time, the atmospheric pressure value that the second pressure monitoring unit monitors is equal
Abnormal, therefore staff is by observing the air pressure that the second pressure monitoring unit monitors
Value just can find failure condition, timely troubleshooting in the very first time；Described second pressure monitoring
Unit may be used without existing Pressure gauge.
The present embodiment also provides for print nozzles surface meniscus in a kind of above-mentioned ink-feeding device
Forming method, comprises the steps:
S101. open air pressure feed unit, and be stepped up air pressure feed unit to for ink reservoir
The air pressure provided；
Monitor print nozzles the most in real time, until the surface of print nozzles forms little ink droplet
Time, control air pressure feed unit and stop pressurization so that for pressure (this pressure in ink reservoir
For malleation) do not continue to increase, and keep current pressure；
S103. regulation is for the liquid level in ink reservoir so that it is less than the liquid level in print nozzles, from
And (it is for beating to offset for original malleation in ink reservoir to form negative pressure in for ink reservoir
Ink head surface forms little ink droplet), and the little ink droplet that print nozzles surface is formed exists
The inside to print nozzles is sucked back, with the surface shape in print nozzles under the effect of this negative pressure
Become meniscus.
Owing to forming meniscus on the surface of print nozzles so that the surface of print nozzles is done
Only, smooth and ink droplet will not be hung with, it is ensured that the cleaning of printed medium, improve printing
Quality.
In the present invention, described little ink droplet refers to print nozzles surface and has just started ink occur
Time the ink droplet that formed.
Preferably, in step s103, make for the liquid level in ink reservoir less than in print nozzles
Liquid level 8mm～10mm.
Embodiment 2:
As shown in Figure 4, the present embodiment provides a kind of ink-feeding device, including print nozzles 1,
Ink tube 2, confession ink reservoir 3, source of the gas, three-way valve 4, pressure-regulating valve the 5, first pressure
Table 6, filter 7 and the second Pressure gauge 8.
Described ink tube 2 is connected to between ink reservoir 3 and print nozzles 1；Described source of the gas
For providing stable air pressure to for ink reservoir 3；Described pressure-regulating valve 5 is in ink supply
During device work, regulation source of the gas is to the atmospheric pressure value provided for ink reservoir 3, thus increases for ink reservoir 3
Interior air pressure, described three-way valve 4 is for making when ink-feeding device quits work for ink reservoir 3
Communicate with air, with unloading for the pressure in ink reservoir 3；Described first Pressure gauge 6 is used for
Monitoring source of the gas is to the atmospheric pressure value provided for ink reservoir 3 in real time；Described filter 7 is arranged on gas
Between source and confession ink reservoir 3；Described second Pressure gauge 8 is in monitoring is for ink reservoir 3 in real time
Atmospheric pressure value.Here, described pressure-regulating valve 5 and the first Pressure gauge 6 can divide with profit
Substitute from device.
The present embodiment also provides for print nozzles surface meniscus in a kind of above-mentioned ink-feeding device
Forming method, particularly as follows: according to print nozzles 1 and for the distance between ink reservoir 3, ink supply
The parameters such as the caliber of pipe 2 choose a force value in advance, make three-way valve 4 be in NC side
To (i.e. only two, left and right mouths conducting in three-way valve 4, the most respectively with source of the gas and confession ink reservoir
The mouth conducting being connected, and close with the mouth of atmosphere), delay with this force value for standard
Slow adjust pressure-regulating valve 5, so that source of the gas starts to provide air pressure to for ink reservoir 3, and by
Step increase source of the gas is to the air pressure provided for ink reservoir 3, to be gradually increased for the pressure in ink reservoir 3
Power, until adjust pressure-regulating valve 5 when the surface of print nozzles 1 forms little ink droplet so that
Source of the gas stops increasing pressure to for ink reservoir 3, and keep current pressure constant, meanwhile,
Regulation is for the liquid level in ink reservoir 3 so that it is 10mm lower than the liquid level in print nozzles 1, with
Meniscus is formed on the surface of print nozzles 1.Then ink-feeding device starts working (printing).
When ink-feeding device quits work, three-way valve 4 need to be made to be in NO direction (i.e. three-way valve 4
In only two mouths conductings of bottom right, the mouth being i.e. connected with for ink reservoir 3 and with atmosphere
Mouth conducting, and the mouth Guan Bi being connected with source of the gas) so that communicating with air for ink reservoir,
Thus unload for the pressure in ink reservoir 3, drip ink to avoid print nozzles 1 to continue.
Other structures and effect in the present embodiment are the most same as in Example 1, the most no longer
Repeat.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present
And the illustrative embodiments used, but the invention is not limited in this.For ability
For those of ordinary skill in territory, in the situation without departing from spirit and substance of the present invention
Under, various modification and improvement can be made, these modification and improvement are also considered as the present invention's
Protection domain.
Claims (9)
1. a forming method for print nozzles surface meniscus, described confession in ink-feeding device
Device for ink includes for ink reservoir, print nozzles and is connected to between ink reservoir and print nozzles
Ink tube, described ink-feeding device also includes air pressure feed unit, and it is for for for ink reservoir
Stable air pressure is provided and can regulate for the atmospheric pressure value in ink reservoir, to ensure that ink is from ink supply
Pond supplies to print nozzles via ink tube, it is characterised in that described forming method includes
Following steps:
1) open air pressure feed unit, and be stepped up air pressure feed unit to supplying ink reservoir to carry
The air pressure of confession；
2) print nozzles is monitored in real time, during until the surface of print nozzles forms little ink droplet,
Control air pressure feed unit and stop pressurization, and keep current pressure；
3) regulation is for the liquid level in ink reservoir so that it is less than the liquid level in print nozzles, with
The surface of print nozzles forms meniscus.
Forming method the most according to claim 1, it is characterised in that described step
3), in, regulation is for the liquid level in ink reservoir so that it is lower than the liquid level in print nozzles
8mm～10mm.
Forming method the most according to claim 1, it is characterised in that also include step
Rapid 4): when ink-feeding device quits work, make to communicate with air for ink reservoir, thus unload
For the pressure in ink reservoir.
Forming method the most according to claim 1, it is characterised in that described air pressure
Feed unit includes source of the gas and pressure regulon unit；Described source of the gas is for carrying to for ink reservoir
For stable air pressure；Described pressure regulon unit is for regulating when ink-feeding device works
Source of the gas is to the atmospheric pressure value provided for ink reservoir, thus regulates for the atmospheric pressure value in ink reservoir, and
Make when ink-feeding device quits work to communicate with air for ink reservoir.
Forming method the most according to claim 4, it is characterised in that described pressure
Regulon unit includes pressure-regulating valve and three-way valve.
Forming method the most according to claim 4, it is characterised in that described ink supply
Device also includes the first pressure monitoring unit, and it carries to for ink reservoir for monitoring source of the gas in real time
The atmospheric pressure value of confession.
Forming method the most according to claim 4, it is characterised in that described ink supply
Device also includes that filter element, described filter element are arranged on source of the gas and between ink reservoir.
Forming method the most according to claim 7, it is characterised in that described filtration
Filtering accuracy < 20 μm of unit.
9. according to the forming method according to any one of claim 1～8, it is characterised in that
Described ink-feeding device also includes the second pressure monitoring unit, and it supplies ink reservoir for monitoring in real time
Interior atmospheric pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310303870.1A CN104290455B (en) | 2013-07-18 | 2013-07-18 | A kind of ink-feeding device and the forming method of print nozzles surface meniscus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310303870.1A CN104290455B (en) | 2013-07-18 | 2013-07-18 | A kind of ink-feeding device and the forming method of print nozzles surface meniscus |
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| CN104290455A CN104290455A (en) | 2015-01-21 |
| CN104290455B true CN104290455B (en) | 2016-08-10 |
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| CN201310303870.1A Expired - Fee Related CN104290455B (en) | 2013-07-18 | 2013-07-18 | A kind of ink-feeding device and the forming method of print nozzles surface meniscus |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6884991B2 (en) * | 2016-05-26 | 2021-06-09 | セイコーエプソン株式会社 | Liquid supply valve and flow path system and how to use the liquid supply valve |
| US10518551B1 (en) * | 2018-12-11 | 2019-12-31 | Xerox Corporation | System and method for attenuating the drying of ink from a printhead |
| CN110497699A (en) * | 2019-07-31 | 2019-11-26 | 杭州长命印刷有限公司 | A kind of printing ink-feeding device |
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Address after: 100871, Beijing, Haidian District, Cheng Fu Road, No. 298, Zhongguancun Fangzheng building, 5 floor Patentee after: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee after: PKU FOUNDER INFORMATION INDUSTRY GROUP CO.,LTD. Patentee after: BEIJING FOUNDER ELECTRONICS Co.,Ltd. Address before: 100871, Beijing, Haidian District, Cheng Fu Road, No. 298, Zhongguancun Fangzheng building, 5 floor Patentee before: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee before: FOUNDER INFORMATION INDUSTRY HOLDINGS Co.,Ltd. Patentee before: BEIJING FOUNDER ELECTRONICS Co.,Ltd. |
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Effective date of registration: 20220915 Address after: 3007, Hengqin international financial center building, No. 58, Huajin street, Hengqin new area, Zhuhai, Guangdong 519031 Patentee after: New founder holdings development Co.,Ltd. Patentee after: BEIJING FOUNDER ELECTRONICS Co.,Ltd. Address before: 100871, Beijing, Haidian District, Cheng Fu Road, No. 298, Zhongguancun Fangzheng building, 5 floor Patentee before: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee before: PKU FOUNDER INFORMATION INDUSTRY GROUP CO.,LTD. Patentee before: BEIJING FOUNDER ELECTRONICS Co.,Ltd. |
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