CN103042826B - Jet printing unit - Google Patents
Jet printing unit Download PDFInfo
- Publication number
- CN103042826B CN103042826B CN201110320397.9A CN201110320397A CN103042826B CN 103042826 B CN103042826 B CN 103042826B CN 201110320397 A CN201110320397 A CN 201110320397A CN 103042826 B CN103042826 B CN 103042826B
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- Prior art keywords
- runner
- spray printing
- bubble
- unit
- exhaust
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Abstract
The invention relates a jet printing unit which at least comprises an orifice plate, a plate body, an oscillating plate and runner exhaust elements, wherein the plate body is arranged to be adjacent to the orifice plate and is provided with a runner, the oscillating plate is arranged on the plate body and is provided with an exhaust hole, partial runner exhaust elements are arranged between the oscillating plate and the plate body, and each runner exhaust element at least comprises a film arranged and covers on an exhaust hole, an exhaust communicating groove communicated with the exhaust hole, and a microrunner arranged between the runner and the exhaust communicating groove and communicated with the runner and the exhaust communicating groove to ensure that gas flows to the exhaust communicating groove and is exhausted through the exhaust hole through the film. By means of the communication of the runner, the microrunners, the exhaust communicating grooves and the films, the gas in the runners is exhausted, and the effects of maintaining jet printing quality and reducing money and time waste are achieved.
Description
Technical field
The present invention is about a kind of spray printing unit, espespecially a kind of spray printing unit that the removal of bubbles in runner can be maintained to spray printing quality.
Background technology
In recent years, flourish along with PC and industrial technology, science and technology is also closer with the combination of daily life, printing device has just like become the indispensable product of PC periphery in enterprise or family, wherein again with ink-jet printer have that price is low, consumptive material changes simple and the advantage such as obtains easily, therefore widely consumer adopts.
Known ink-jet printer is mainly to carry out spray printing action by ink gun, and spray printing unary system on ink gun is arranged in ink cartridges, is stacked form by multilayer object, comprises jet orifice plate, oscillating plate and the multi-layer sheet etc. with nozzle, to form main runner.In main runner, there is a pressure chamber, be used to that braking plate is subject to voltage and while activating, pressurize and promote ink to flow and spray, in order to do the molar behavior that completes spray printing.
But, in print procedure, if there is Bubble formation, can in main runner, diffuse to pressure chamber and accumulate on this place, make braking plate be subject to voltage and while activating, cannot pass through main runner because gas barrier causes ink, causing spray printing action not complete smoothly, light produce the bad situation of spray printing, cause print quality not good; Heavy at all cannot spray printing, not only user must spend many time find problems, and carries out the replacing of ink cartridges or ink gun, and the ink not using in former ink cartridges has also caused the waste of resource, empty increasing time and money cost; If user is badly in need of carrying out the printing of file, must switch to other printers or out look for can be for the hotel owner who prints, in the waste that has virtually also increased time and money.
Therefore, how to develop a kind of disappearance that is enough to improve above-mentioned known technology, and can avoid causing spray printing action to complete smoothly because bubble intercepts, to reduce the spray printing unit of money and time waste, real is current problem in the urgent need to address.
Summary of the invention
Main purpose of the present invention is for providing a kind of spray printing unit, in print procedure, because causing ink, gas barrier cannot pass through main runner in order to do solving known spray printing unit, cause spray printing action not complete smoothly, cause print quality not good, and cause the shortcoming such as money and time waste.
Another object of the present invention, for a kind of spray printing unit is provided, is discharged the bubble in runner to reach, and avoids causing spray printing action to complete smoothly because bubble intercepts, and is maintained spray printing quality and reduces effect of money and time waste.
For reaching above-mentioned purpose, a better enforcement aspect of the present invention, for a kind of spray printing unit is provided, at least comprises: a jet orifice plate; One oscillating plate, is adjacent to this jet orifice plate, and is provided with a steam vent; One plate body, is located between this jet orifice plate and this oscillating plate, and has a runner; And a runner expulsion element, be to be arranged between this oscillating plate and this plate body, and be communicated with this runner with this steam vent, in order to do making in this runner gas flow through this runner expulsion element, and discharged by this steam vent.
For reaching above-mentioned purpose, another better enforcement aspect of the present invention, for a kind of spray printing unit is provided, at least comprises: a jet orifice plate; One oscillating plate, is adjacent to this jet orifice plate, and is provided with a steam vent; One plate body, is located between this jet orifice plate and this oscillating plate, and has a runner; And a runner expulsion element, the runner expulsion element of part is arranged between this oscillating plate and this plate body, at least comprises: a film, arranges and be covered in this steam vent; One exhaust connectivity slot, is communicated with this steam vent; And multiple fluid channel, be arranged between this runner and this exhaust connectivity slot, and be communicated with this runner and this exhaust connectivity slot, in order to do making in this runner gas flow to this exhaust connectivity slot, and discharged by this steam vent by this film.
Brief description of the drawings
Fig. 1 is the structural representation of the spray printing unit of preferred embodiment of the present invention.
Fig. 2 is the schematic diagram of the oscillating plate shown in Fig. 1 and film.
Fig. 3 is the schematic diagram of the plate body shown in Fig. 1, exhaust connectivity slot and fluid channel.
Fig. 4 is the jet orifice plate schematic diagram shown in Fig. 1.
Fig. 5 is the A-A ' schematic cross-section shown in Fig. 2.
Fig. 6 A is the partial front schematic diagram of the runner shown in Fig. 1 and runner expulsion element.
Fig. 6 B is the C-C ' profile shown in Fig. 6 A.
Fig. 7 A is the schematic diagram that the runner entrance shown in Fig. 6 A is set up bubble filtration.
Fig. 7 B is the E-E ' profile shown in Fig. 7 A.
Fig. 7 C is the schematic diagram of the region F shown in dotted line in Fig. 7 B.
Fig. 7 D is the schematic diagram that the bubble filtration shown in Fig. 7 A filters bubble.
Fig. 8 A is that the runner entrance shown in Fig. 7 A stretches out and width strengthens and set up the schematic diagram of bubble filtration.
Fig. 8 B is the G-G ' profile shown in Fig. 8 A.
Fig. 9 A is the schematic diagram that the runner entrance shown in Fig. 8 A is set up another layer of bubble filtration.
Fig. 9 B is the partial schematic diagram of the H-H ' section shown in Fig. 9 A.
Fig. 9 C is the schematic diagram of another embodiment of the bubble filtration shown in Fig. 9 A.
Fig. 9 D is the partial schematic diagram of the I-I ' section shown in Fig. 9 C.
1: spray printing unit
11: jet orifice plate
111: spray orifice
12: plate body
121: runner
1211: aqua storage tank
1212: pressure chamber
1213: entrance
122: filter screen
123: sheet material
124: photoresistance glue-line
125,125a, 125b: bubble filtration
13: oscillating plate
131: steam vent
132: blasthole
133: braking plate
14: runner expulsion element
141: film
142: exhaust connectivity slot
143: fluid channel
15: suction element
B1, b2, b3: bubble
A-A ', C-C ', E-E ', G-G ', H-H ', I-I ': cross section
B, D, F: region
Detailed description of the invention
Some exemplary embodiments that embody feature & benefits of the present invention will describe in detail in the explanation of back segment.Be understood that the present invention can have various variations in different aspects, so it neither departs from the scope of the present invention, and explanation wherein and graphic be when the use that explain in itself, but not in order to limit the present invention.
Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, wherein Fig. 1 is the structural representation of the spray printing unit of preferred embodiment of the present invention, Fig. 2 is the schematic diagram of the oscillating plate shown in Fig. 1 and film, Fig. 3 is the schematic diagram of the plate body shown in Fig. 1, exhaust connectivity slot and fluid channel, Fig. 4 is the jet orifice plate schematic diagram shown in Fig. 1, and Fig. 5 is the A-A ' schematic cross-section shown in Fig. 2.As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, spray printing of the present invention unit 1 is to be stacked and form above by least two layers of object, at least comprises jet orifice plate 11, plate body 12, oscillating plate 13 and runner expulsion element 14.Jet orifice plate 11 can have spray orifice 111, and plate body 12 can be Multilayer Structure and forms, and such as but not limited to the multi-layer sheet of two to ten layers, is adjacent to jet orifice plate 11, and inner formation runner 121, for liquid flow, and for example ink, but not as limit, oscillating plate 13 is a side that is adjacent to plate body 12, and has steam vent 131, in order to discharge the gas that results from runner 121 in spray printing process because of various situations, runner expulsion element 14 is to be arranged at least in part between oscillating plate 13 and plate body 12, at least comprise film 141, exhaust connectivity slot 142 and multiple fluid channel 143, wherein film 141 be only allow gas by and can block the material that liquid passes through, arrange and be covered in steam vent 131, exhaust connectivity slot 142 is to be communicated with steam vent 131, and multiple fluid channel 143 are to be arranged between runner 121 and exhaust connectivity slot 142, and be communicated with runner 121 and exhaust connectivity slot 142, in order to do making gas flow to exhaust connectivity slot 142, and discharge by film 141, to reach, the gas in runner 121 or bubble are discharged, avoid causing spray printing action to complete smoothly because gas or bubble intercept, and be maintained spray printing quality and reduce effect of money and time waste.
According to conception of the present invention, spray printing unit 1 can comprise suction element 15, such as but not limited to a pump, be connected with the steam vent 131 of oscillating plate 13, in order to aspirate the gas in runner, so that gas enters fluid channel 143 and flows to exhaust connectivity slot 142 via runner 121, discharge by steam vent 131 and film 141 again, and because steam vent 131 is to be covered by film 141, thus only allow that gas flows out via film 141, and can block liquid by film 141.Therefore, suction element 15 only can be left runner 121 by extracting gases in aspiration procedure, therefore can not produce the contingency question of waste liquid.
In some embodiment, the oscillating plate 13 of spray printing of the present invention unit 1 can include water hole 132 and braking plate 133, braking plate 133 can start to activate because accepting voltage, blasthole 132 is to use for spray printing liquid to flow in runner 121, and runner 121 cordings have aqua storage tank 1211 and pressure chamber 1212, wherein aqua storage tank 1211 is to store spray printing liquid, and pressure chamber 1212 is the braking plate 133 that is adjacent to oscillating plate 13, and in the time that braking plate 133 is subject to voltage and activates, pressurize and promote spray printing liquid and flow in runner 121 is interior, and spray via the spray orifice 111 of jet orifice plate 11, in order to do completing overall spray printing action.In addition, plate body 12 more comprises filter screen 122, arranges and be covered in blasthole 132, in order to filter and exclude the impurity in liquid for spray printing, to avoid spray printing impurity contained in liquid to enter runner and cause flow blockage, or causes the situations such as print quality is not good.
Refer to Fig. 6 A and Fig. 6 B, it is to be respectively the C-C ' profile shown in partial front schematic diagram and Fig. 6 A of the runner shown in Fig. 1 and runner expulsion element.As shown in Figure 6A and 6B, plate body 12 of the present invention is to comprise multiple sheet material 123 and multiple photoresistance glue-line 124, wherein multiple sheet material 123 is mutually to stack with framework in forming runner 121, and the multiple sheet material 123 mutually place of stacking is to be mingled with photoresistance glue-line 124 for better, photoresistance glue-line 124 can be a photonasty photoresist, such as but not limited to positive photoresistance or negative photoresistance, and thickness approximately between 10～20 microns (μ m) between, but not as limit.In this embodiment, region D shown in dotted line and D ' are the entrance 1213 of runner 121, the fluid of required spray printing is to pressure chamber 1212 and spray orifice 111 through this inlet streams, if in having Bubble formation herein and entering, to cause spray printing bad, even cause block and cannot carry out spray printing action.
Therefore, the present invention system sees through bubble filtration, the problem causing to solve bubble is set.Refer to Fig. 7 A and Fig. 7 B, it is to be respectively the runner entrance shown in Fig. 6 A to set up the E-E ' profile shown in schematic diagram and Fig. 7 A of bubble filtration.As shown in Fig. 7 A and Fig. 7 B, the present invention system sees through and bubble filtration 125 is set in the entrance 1213 of runner 121, bubble filtration 125 can be column structure, but not as limit, and sort and be staggered to form as better in the mode of arranging more, the ability of filtering bubble to promote spray printing of the present invention unit 1, effectively stops bubble to flow into pressure chamber 1212 and spray orifice 111.In addition, the width of entrance 1213 front ends of runner 121 can be extended to W2 (as shown in Figure 7 A) by original width W 1 (as shown in Figure 6A), the scope of arranging to promote bubble filtration 125, make scope that bubble filtration 125 arranges by the entrance 1213 of runner 121 to presenting a cumulative kenel away from entrance 1213 directions, and in the time that its column structure first row scope increases, there is best bubble filter effect, but not as limit.
Refer to Fig. 7 C, it is the schematic diagram of the region F shown in dotted line in Fig. 7 B.As shown in Fig. 7 C, because photoresistance glue-line 124 is photonasty photoresist, therefore can use gold-tinted program defining to go out shape and the size of bubble filtration 125, and be to be mingled with photoresistance glue-line 124 between the multi-layered board 123 due to plate body 12, therefore the gold-tinted processing procedure of bubble filtration 125 belongs to processing procedure with the gold-tinted processing procedure system of the photoresistance glue-line 124 of this level, without increasing processing procedure quantity, can reach and save cost and according to the customized effect of demand.
Refer to Fig. 7 D, it is the schematic diagram that the bubble filtration shown in Fig. 7 A filters bubble.As shown in Fig. 7 D, bubble filtration 125 of the present invention is outside bubble b1 different two sizes and b2 are blocked in, and the fluid that spray printing is used still can see through the space of the bubble filtration 125 not blocked by bubble and flows in runner 121 (as shown in the directions of arrow of Fig. 7 C).But if bubble b1 and b2 are not kept off down by bubble filtration 125, bubble b1 and b2 may collect and form larger sized bubble b3 in the entrance of runner 121 1213, and block entrance completely.
Refer to Fig. 8 A and Fig. 8 B, it is to be respectively that the runner entrance shown in Fig. 7 A stretches out and width strengthens and set up the G-G ' profile shown in schematic diagram and Fig. 8 A of bubble filtration.As shown in Fig. 8 A and Fig. 8 B, for solving foregoing problems, the present invention can stretch out the entrance of runner 121 1213 and width is extended to W3 (as shown in Figure 8 A) by W2 (as shown in Figure 7 A), same, the scope that bubble filtration 125 is arranged by the entrance 1213 of runner 121 to presenting cumulative kenel away from entrance 1213 directions, with framework in the bubble filtration 125 of making wider and more rows, make the fluid that spray printing is used have more space to enter runner 121 through entrance 1213, can avoid portion gas to block the entrance 1213 of runner 121 simultaneously, to promote the effect of filtering bubble.
Refer to Fig. 9 A and Fig. 9 B, it is the partial schematic diagram that is respectively the runner entrance shown in Fig. 8 A and sets up the H-H ' section shown in schematic diagram and Fig. 9 A of another layer of bubble filtration.As shown in Fig. 9 A and Fig. 9 B, plate body 12 of the present invention can replace the sheet material of the level of the entrance with respect to runner 121 1,213 123 with photoresistance glue-line 124, manufacture double-deck bubble filtration 125a and 125b to see through gold-tinted processing procedure, wherein bubble filtration 125a and 125b with the mutual correspondence of levels and staggered column structure for better, but not as limit, stop that to promote it bubble enters the effect of the entrance 1213 of runner 121.In addition, because the thickness of the sheet material 123 being replaced by photoresistance glue-line 124 is about 80 microns, (μ m), for maintaining close thickness, so the photoresistance glue-line 124 of locating is to select thickness to be about 50 microns of (μ light sensation photoresists m), and then produce thickness and be about 50 microns of (μ bubble filtration 125a and 125b m).
Refer to Fig. 9 C and Fig. 9 D, it is the partial schematic diagram that is respectively the I-I ' section shown in schematic diagram and Fig. 9 C of another embodiment of the bubble filtration shown in Fig. 9 A.As shown in Fig. 9 C and Fig. 9 D, bubble filtration 125a of the present invention can be polygonal rod structure, and its fluid of using with respect to spray printing to being acute angle, destroy the globality of bubble to see through acute angle, for example prick a bubble etc., but not as limit.As for bubble filtration 125b, its manufacture method, thickness and all identical with previous embodiment with the relativeness of bubble filtration 125a, repeat no more in this.
Referring again to Fig. 5 and coordinate Fig. 1 to Fig. 4.As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, when spray printing of the present invention unit 1 carries out spray printing action, the blasthole 132 that is self-excited oscillation plate 13 imports spray printing liquid, and filters and excludes the impurity in liquid for spray printing via filter screen 122, and uses fluid storage in aqua storage tank 1211 spray printing.Then, see through again service voltage and give braking plate 133, make braking plate 133 be subject to voltage and activate, pressurize and promote spray printing liquid flow, now, if because various possible factors produce gas or bubble, and because the density of gas or bubble is less, therefore can flow in pressure chamber 1212, flow in exhaust connectivity slot 142 via multiple fluid channel 143 of runner expulsion element 14 of the present invention again, discharge by steam vent 131 and film 141 again, compare traditional spray printing unit in the time of gas or Bubble formation, easily cause flow blockage, and affect the actuation effect of braking plate, the present invention can really reach the gas in runner 121 or bubble are discharged, avoid causing spray printing action to complete smoothly because gas or bubble intercept, and be maintained spray printing quality and reduce effect of money and time waste.
In sum, the invention provides a kind of spray printing unit, by the connection of runner, fluid channel, exhaust connectivity slot and film, gas in runner or bubble are discharged, to avoid causing spray printing action to complete smoothly because bubble intercepts, and reach the effect that maintains spray printing quality and reduce money and time waste.
In addition, spray printing of the present invention unit sees through bubble filtration is set, also can prevent bubble via the inlet streams of runner to pressure chamber and spray orifice, and then prevent spray printing bad, even cause obstruction and cannot carry out the generation of the situations such as spray printing action, and between the multi-layered board due to plate body, be to be mingled with photoresistance glue-line, therefore the gold-tinted processing procedure of bubble filtration belongs to processing procedure with the gold-tinted processing procedure system of the photoresistance glue-line of this level, without increasing processing procedure quantity, can reach and save cost and according to the customized effect of demand.
Can think and be to modify as all by the personage Ren Shi craftsman who is familiar with this skill even if the present invention has been described in detail by the above embodiments, so neither de-as Protector that attached claim is wanted.
Claims (12)
1. a spray printing unit, at least comprises:
One jet orifice plate;
One oscillating plate, is adjacent to this jet orifice plate, and is provided with a steam vent;
One plate body, is located between this jet orifice plate and this oscillating plate, and has a runner; And
One runner expulsion element, part is arranged between this oscillating plate and this plate body, and at least comprises:
Film, arranges and is covered in this steam vent;
One exhaust connectivity slot, is communicated with this steam vent; And
Multiple fluid channel, are arranged between this runner and this exhaust connectivity slot, and are communicated with this runner and this exhaust connectivity slot, so that gas flow, to this exhaust connectivity slot, and is discharged by this steam vent by this film in this runner.
2. spray printing as claimed in claim 1 unit, is characterized in that this film is only to allow that gas passes through, and can block the material that liquid passes through.
3. spray printing as claimed in claim 1 unit, is characterized in that this plate body more comprises multiple sheet material, and the plurality of sheet material system stacks mutually, with framework in forming this runner.
4. spray printing as claimed in claim 3 unit, it is characterized in that this plate body more comprises multiple photoresistance glue-lines, and the plurality of photoresistance glue-line system is located between the plurality of sheet material, and this photoresistance glue-line is a dry film glue-line made from photonasty photoresist, and its thickness is between 10 to 20 microns.
5. spray printing as claimed in claim 1 unit, is characterized in that this plate body more comprises a bubble filtration, is arranged at an entrance of this runner, in order to filter bubble.
6. spray printing as claimed in claim 5 unit, the width system that it is characterized in that this bubble filtration by the entrance of this runner to cumulative away from this runner Way in.
7. spray printing as claimed in claim 5 unit, is characterized in that this bubble filtration is that many column structures form, and sorts and is staggered to form in the mode of arranging more.
8. spray printing as claimed in claim 1 unit, is characterized in that plate body more comprises double-deck bubble filtration, is arranged at an entrance of this runner, in order to filter bubble, and the corresponding and setting that is staggered mutually of the series of strata up and down of this double-deck bubble filtration.
9. spray printing as claimed in claim 8 unit, is characterized in that this bubble filtration is one of them person that many column structures form with the more dihedral rod structure forms.
10. spray printing as claimed in claim 9 unit, is characterized in that the thickness system of the levels of this bubble filtration respectively does for oneself 50 microns.
11. spray printing as claimed in claim 1 unit, is characterized in that more comprising a suction element, and it is to connect and be connected with this steam vent of this oscillating plate, in order to aspirate the gas in this runner.
12. spray printing as claimed in claim 1 unit, it is characterized in that this oscillating plate more comprises a blasthole, this blasthole system uses for spray printing liquid and flows into this runner, and this plate body more comprises a filter screen, arrange and be covered in this blasthole, in order to filter and exclude the impurity in liquid for spray printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110320397.9A CN103042826B (en) | 2011-10-11 | 2011-10-11 | Jet printing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110320397.9A CN103042826B (en) | 2011-10-11 | 2011-10-11 | Jet printing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103042826A CN103042826A (en) | 2013-04-17 |
| CN103042826B true CN103042826B (en) | 2014-12-10 |
Family
ID=48055778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110320397.9A Expired - Fee Related CN103042826B (en) | 2011-10-11 | 2011-10-11 | Jet printing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103042826B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6792225B2 (en) * | 2014-10-08 | 2020-11-25 | ローム株式会社 | Inkjet device and manufacturing method of inkjet device |
| CN110239221B (en) * | 2018-03-09 | 2021-03-09 | 上海锐尔发数码科技有限公司 | Ink-jet printing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241350B1 (en) * | 1992-10-09 | 2001-06-05 | Canon Kabushiki Kaisha | Ink jet printing head and printing apparatus using same |
| CN1590103A (en) * | 2003-09-01 | 2005-03-09 | 精工爱普生株式会社 | Ink jet head unit and printer incorporating the same |
| CN1709699A (en) * | 2004-06-18 | 2005-12-21 | 惠普开发有限公司 | Air management in a fluid ejection device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05254120A (en) * | 1992-03-16 | 1993-10-05 | Seiko Epson Corp | Ink jet head |
| JP4649762B2 (en) * | 2001-04-05 | 2011-03-16 | セイコーエプソン株式会社 | Inkjet head |
| US7121651B2 (en) * | 2002-05-09 | 2006-10-17 | Brother Kogyo Kabushiki Kaisha | Droplet-jetting device with pressure chamber expandable by elongation of pressure-generating section |
| US20070052775A1 (en) * | 2005-09-06 | 2007-03-08 | Samsung Electronics | Gas purging unit and inkjet head having the same |
| JP2007307761A (en) * | 2006-05-17 | 2007-11-29 | Fuji Xerox Co Ltd | Liquid droplet delivering head, method for manufacturing liquid droplet delivering head and liquid droplet delivering apparatus |
-
2011
- 2011-10-11 CN CN201110320397.9A patent/CN103042826B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241350B1 (en) * | 1992-10-09 | 2001-06-05 | Canon Kabushiki Kaisha | Ink jet printing head and printing apparatus using same |
| CN1590103A (en) * | 2003-09-01 | 2005-03-09 | 精工爱普生株式会社 | Ink jet head unit and printer incorporating the same |
| CN1709699A (en) * | 2004-06-18 | 2005-12-21 | 惠普开发有限公司 | Air management in a fluid ejection device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平5-254120A 1990.10.05 * |
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| Publication number | Publication date |
|---|---|
| CN103042826A (en) | 2013-04-17 |
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Granted publication date: 20141210 Termination date: 20201011 |