CN113059914B - Liquid jet flow passage - Google Patents
Liquid jet flow passage Download PDFInfo
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- CN113059914B CN113059914B CN202110318515.6A CN202110318515A CN113059914B CN 113059914 B CN113059914 B CN 113059914B CN 202110318515 A CN202110318515 A CN 202110318515A CN 113059914 B CN113059914 B CN 113059914B
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- Prior art keywords
- substrate
- cavity wall
- layer
- extension
- rectangular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14032—Structure of the pressure chamber
- B41J2/1404—Geometrical characteristics
Abstract
The invention discloses a liquid jet flow channel, belonging to the technical field of MEMS (micro-electromechanical systems) processes; the ink inlet channel is arranged in the middle of the substrate layer, the cavity wall layer is provided with a pressure cavity, the orifice layer is provided with orifices, the cavity wall layer and the orifice layer are sequentially arranged on the substrate layer, the pressure cavity is respectively communicated with the ink inlet channel and the orifices, the cross section of the ink inlet channel is curved and comprises a substrate rectangular part, a substrate extension part a and a substrate extension part b, a plurality of substrate extension parts a are respectively arranged on two sides of the substrate rectangular part in the width direction, and two ends of the substrate rectangular part in the length direction are respectively provided with a substrate extension part b; the invention has better printing quality, higher printing precision, timely ink supply, complete filling of the flow channel and improvement of ink jet quality.
Description
Technical Field
The invention discloses a liquid injection flow channel, and belongs to the technical field of MEMS (micro-electromechanical systems) processes.
Background
The main components of a print head of an ink jet printer are a nozzle plate including ink supply channels for ejecting ink from the print head, ejection chambers, and ejection ports. Due to the widespread use of inkjet printers, nozzle plates have undergone significant design changes in order to improve inkjet efficiency and reduce manufacturing costs. The design of the nozzle plate also needs to be changed in an attempt to accommodate high speed printing and high definition of the printed image. While improvements in printhead design have enabled printheads to achieve higher definition at higher printing speeds, such improvements have presented new problems with respect to the cost of manufacture of the nozzle plate, as the complexity of the design has increased, previously unimportant problems with more complex designs of components involving flow characteristics can also have a serious adverse effect on printhead reliability and affect product quality.
The thermal foaming type printing head has the working principle that ink is heated through a heating resistor, so that the ink generates bubbles, and the ink is quickly extruded and sprayed out from a nozzle. With the demand of higher printing speed, the frequency of printing nozzles is increasing, so that higher demand is placed on ink supply channels. When ink is continuously ejected at a high frequency, the flow path cannot be completely filled due to an untimely ink supply, which may deteriorate the quality of ink ejection or interrupt ink ejection. Therefore, it is necessary to increase the ink supply speed of the ink jet channel and ensure that a large portion of the bubble extrusion force acts on the direction of the nozzle hole. As shown in fig. 1 and the left diagram of fig. 3, the flow channel arrangement of the substrate layer and the cavity wall layer of the conventional thermal foaming printhead increasingly does not meet the use requirements of people for the print head, and the ink supply, the flow channel filling speed and the structural reliability need to be improved.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problems that the existing printing head is not supplied with ink timely, and the ink supply speed is not enough.
(II) technical scheme
In order to solve the technical problem, the invention provides a liquid ejection flow channel, which comprises a substrate layer, a cavity wall layer and a jet orifice layer, wherein an ink inlet channel is arranged in the middle of the substrate layer, the cavity wall layer is provided with a pressure cavity, the jet orifice layer is provided with a jet orifice, the substrate layer is sequentially provided with the cavity wall layer and the jet orifice layer, the pressure cavity is respectively communicated with the ink inlet channel and the jet orifice, the cross section of the ink inlet channel is curved and comprises a substrate rectangular part, a substrate extension part a and a substrate extension part b, a plurality of substrate extension parts a are respectively arranged on two sides of the substrate rectangular part in the width direction, and two ends of the substrate rectangular part in the length direction are respectively provided with a substrate extension part b.
Further, the distances between every two of the plurality of base extension parts a arranged on each side of the base rectangular part in the width direction are equal, and every two base extension parts are connected through an arc.
Further, the base extension parts a arranged on the two sides of the base rectangular part in the width direction are staggered.
Further, the base extension parts b are respectively arranged on different sides of two ends of the base rectangular part in the length direction.
Further, the base extension portion a is horn-shaped, the base extension portion b is right trapezoid-shaped, and the inclined side of the base extension portion b is set to be a curved side.
Furthermore, the cross section of the pressure cavity is curved and comprises a cavity wall rectangular part and cavity wall extension parts a, a plurality of cavity wall extension parts a are respectively arranged on two sides of the cavity wall rectangular part in a staggered array manner in the width direction, and the cavity wall extension parts a on each side are connected in an arc manner.
Furthermore, the cavity wall extension part a is arranged in a C shape, the area of the cavity wall rectangular part is larger than that of the substrate rectangular part, and the cross-sectional area of the pressure cavity is larger than that of the ink inlet channel.
Furthermore, the connection part of the cavity wall extension part a and the cavity wall rectangular part is in circular arc transition.
(III) advantageous effects
The technical scheme of the invention has the following advantages: in the ink inlet channel of the substrate layer, the peninsulas are formed in the ink inlet channel in an extending mode, the contact area between a part of flow channels formed by the ink inlet channel and ink is increased, the capillary flow efficiency of the ink flowing from the ink inlet channel to the pressure cavity is increased, the wall of the pressure cavity is prolonged, the thermal crosstalk between adjacent cavities is reduced, and meanwhile a better connecting and supporting effect is achieved on the jet orifice layer. The invention comprises the following steps:
(1) the capillary action area of the ink inlet channel is increased, the capillary action force of the ink inlet channel is increased, and higher ink supply requirements are supported;
(2) under the condition of not changing the size of the pressure cavity, the width of the flow channel is increased, and higher ink supply requirements are supported;
(3) on the basis of not increasing the resistance of the flow channel, the mutual interference between the adjacent pressure cavities is reduced, and the printing precision is improved;
(4) the bottom layer forms better support during film pasting rolling, and the problem of pressure cavity collapse is relieved.
The invention has better printing quality, higher printing precision, timely ink supply, complete filling of the flow channel and improvement of ink jet quality.
In addition to the technical problems solved by the present invention, the technical features of the constituent technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the present invention will be further described with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic top view (from left to right) of a conventional substrate layer, a conventional chamber wall layer, and a conventional orifice layer.
FIG. 2 is a schematic top view (from left to right) of a substrate layer, a chamber wall layer, and a nozzle layer in accordance with the present invention.
Fig. 3 is a schematic top view (with the cavity wall layer and the orifice layer being transparent) of a conventional printhead (left) and a printhead (right) according to the present invention.
FIG. 4 is a partial schematic view of a variation of the substrate layer, chamber wall layer and combination thereof (from left to right) according to the present invention.
In the figure: 1-substrate layer, 11-substrate rectangular part, 12-substrate extension part a, 13-substrate extension part b, 2-cavity wall layer, 21-cavity wall rectangular part, 22-cavity wall extension part a, 3-spray hole layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, unless otherwise specified, if the terms "plurality", "plurality" or "plural" are used to mean two or more, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Example 1
As shown in the right diagrams of fig. 2 and 3: the utility model provides a liquid jet flow channel, includes stratum basale 1, chamber wall layer 2 and orifice layer 3, stratum basale 1 middle part sets up into the china ink passageway, chamber wall layer 2 is provided with the pressure chamber, orifice layer 3 sets up the orifice, set gradually chamber wall layer 2 and orifice layer 3 on the stratum basale 1, the pressure chamber communicates with advancing china ink passageway and orifice respectively, it is the curve type to advance china ink passageway cross section, and it includes basement rectangle portion 11, basement extension a12 and basement extension b13, 11 width direction both sides of basement rectangle portion set up a plurality of basement extensions a12 respectively, 11 length direction's of basement rectangle portion both ends set up a basement extension b13 respectively. The plurality of base extension portions a12 provided on each side of the base rectangular portion 11 in the width direction have the same distance therebetween, and are connected to each other by an arc. The base extension portions a12 provided on both sides of the base rectangular portion 11 in the width direction are staggered. The base extension portions b13 are respectively disposed on different sides of both ends of the base rectangular portion 11 in the longitudinal direction. The base extension a12 is horn type, the base extension b13 is right trapezoid, and the oblique side of the base extension b13 is set to be arc side. The capillary action area of the ink inlet channel is increased, the capillary action force of the ink inlet channel is increased, and the higher ink supply requirement is supported.
The cross section of the pressure cavity is of a curve shape and comprises a cavity wall rectangular part 21 and cavity wall extension parts a22, a plurality of cavity wall extension parts a22 are respectively arranged on two sides of the cavity wall rectangular part 21 in a staggered array mode, the cavity wall extension parts a22 on each side are connected in an arc mode, the cavity wall of the pressure cavity is prolonged, thermal crosstalk between adjacent cavities is reduced, and meanwhile a better connection effect is achieved for the spray hole layers. The chamber wall extension a22 is arranged in a C shape, the area of the chamber wall rectangular part 21 is larger than that of the substrate rectangular part 11, and the cross-sectional area of the pressure chamber is larger than that of the ink inlet channel. The arc transition at the connection of the cavity wall extension part a22 and the cavity wall rectangular part 21 makes up the pressure cavity space occupied by the arc connection between the cavity wall extension part a 22. The joint between two of the base extension portions a12 may be formed in an oval structure, or may be formed in a semicircular structure as shown in fig. 4.
While the present invention has been described in detail with reference to the specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.
Claims (5)
1. The utility model provides a liquid jet flow channel, includes stratum basale (1), chamber wall layer (2) and orifice layer (3), stratum basale (1) middle part sets up into black passageway, chamber wall layer (2) are provided with the pressure chamber, orifice layer (3) set up the orifice, set gradually chamber wall layer (2) and orifice layer (3) on stratum basale (1), the pressure chamber respectively with advance black passageway and orifice intercommunication, its characterized in that: the cross section of the ink inlet channel is curved, the ink inlet channel comprises a substrate rectangular portion (11), substrate extension portions a (12) and substrate extension portions b (13), a plurality of substrate extension portions a (12) are arranged on two sides of the substrate rectangular portion (11) in the width direction respectively, one substrate extension portion b (13) is arranged on each of two ends of the substrate rectangular portion (11) in the length direction respectively, the distances between every two substrate extension portions a (12) arranged on each side of the substrate rectangular portion (11) in the width direction are equal, the two substrate extension portions a (12) are connected through circular arcs, the substrate extension portions a (12) arranged on two sides of the substrate rectangular portion (11) in the width direction are arranged in a staggered mode, and the substrate extension portions b (13) are arranged on different sides of two ends of the substrate rectangular portion (11) in the length direction respectively.
2. A liquid ejection flow channel as claimed in claim 1, wherein: the base extension part a (12) is horn-shaped, the base extension part b (13) is right trapezoid-shaped, and the inclined side of the base extension part b (13) is set to be arc side.
3. A liquid ejection flow channel as claimed in claim 2, wherein: the cross section of the pressure cavity is curved and comprises a cavity wall rectangular part (21) and cavity wall extension parts a (22), a plurality of cavity wall extension parts a (22) are respectively arranged on two sides of the cavity wall rectangular part (21) in the width direction in a staggered array mode, and the cavity wall extension parts a (22) on each side are connected in an arc mode.
4. A liquid ejection flow channel as claimed in claim 3, wherein: the cavity wall extension part a (22) is arranged in a C shape, the area of the cavity wall rectangular part (21) is larger than that of the substrate rectangular part (11), and the cross-sectional area of the pressure cavity is larger than that of the ink inlet channel.
5. A liquid ejection flow channel as claimed in claim 4, wherein: the connection part of the cavity wall extension part a (22) and the cavity wall rectangular part (21) is in circular arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110318515.6A CN113059914B (en) | 2021-03-25 | 2021-03-25 | Liquid jet flow passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110318515.6A CN113059914B (en) | 2021-03-25 | 2021-03-25 | Liquid jet flow passage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113059914A CN113059914A (en) | 2021-07-02 |
| CN113059914B true CN113059914B (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110318515.6A Active CN113059914B (en) | 2021-03-25 | 2021-03-25 | Liquid jet flow passage |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889327B (en) * | 2022-04-21 | 2023-05-12 | 杭州电子科技大学 | Electrostatic inkjet printer nozzle and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10296970A (en) * | 1997-04-23 | 1998-11-10 | Brother Ind Ltd | Ink jet head |
| CN1291547A (en) * | 1999-08-30 | 2001-04-18 | 惠普公司 | Ink-jet printing head capable of controlling air bubble on top plate |
| CN1404994A (en) * | 2001-09-14 | 2003-03-26 | 飞赫科技股份有限公司 | Improved ink-jetting box |
| CN111993791A (en) * | 2020-08-25 | 2020-11-27 | 苏州锐发打印技术有限公司 | Ink jet device and system with enclosed dual feed drop ejector |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1250371B (en) * | 1991-12-24 | 1995-04-07 | Olivetti & Co Spa | PERFECTED INK JET PRINT HEAD. |
| JPH07285221A (en) * | 1994-04-19 | 1995-10-31 | Sharp Corp | Ink jet head |
| US6761435B1 (en) * | 2003-03-25 | 2004-07-13 | Lexmark International, Inc. | Inkjet printhead having bubble chamber and heater offset from nozzle |
| KR100644705B1 (en) * | 2005-07-04 | 2006-11-10 | 삼성전자주식회사 | Inkjet printhead and method of manufacturing the same |
| JP2007283501A (en) * | 2006-04-12 | 2007-11-01 | Canon Inc | Inkjet recording head |
| CN104470724B (en) * | 2012-07-24 | 2016-04-27 | 惠普发展公司，有限责任合伙企业 | There is the fluid ejection apparatus of particle tolerance film extension |
| JP6566709B2 (en) * | 2015-05-07 | 2019-08-28 | キヤノン株式会社 | Inkjet recording head substrate |
| JP2018051856A (en) * | 2016-09-28 | 2018-04-05 | キヤノン株式会社 | Liquid discharge head, and manufacturing method of liquid discharge head |
| JP6806866B1 (en) * | 2019-09-18 | 2021-01-06 | キヤノン株式会社 | Liquid discharge head, its manufacturing method, and liquid discharge device |
-
2021
- 2021-03-25 CN CN202110318515.6A patent/CN113059914B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10296970A (en) * | 1997-04-23 | 1998-11-10 | Brother Ind Ltd | Ink jet head |
| CN1291547A (en) * | 1999-08-30 | 2001-04-18 | 惠普公司 | Ink-jet printing head capable of controlling air bubble on top plate |
| CN1404994A (en) * | 2001-09-14 | 2003-03-26 | 飞赫科技股份有限公司 | Improved ink-jetting box |
| CN111993791A (en) * | 2020-08-25 | 2020-11-27 | 苏州锐发打印技术有限公司 | Ink jet device and system with enclosed dual feed drop ejector |
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| Publication number | Publication date |
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| CN113059914A (en) | 2021-07-02 |
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