WO2018157594A1 - 一种打印墨盒 - Google Patents

一种打印墨盒 Download PDF

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Publication number
WO2018157594A1
WO2018157594A1 PCT/CN2017/103906 CN2017103906W WO2018157594A1 WO 2018157594 A1 WO2018157594 A1 WO 2018157594A1 CN 2017103906 W CN2017103906 W CN 2017103906W WO 2018157594 A1 WO2018157594 A1 WO 2018157594A1
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WO
WIPO (PCT)
Prior art keywords
ink
chamber
communication
disposed
print cartridge
Prior art date
Application number
PCT/CN2017/103906
Other languages
English (en)
French (fr)
Inventor
王立平
周兴夫
王立娟
Original Assignee
周兴夫
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Filing date
Publication date
Application filed by 周兴夫 filed Critical 周兴夫
Publication of WO2018157594A1 publication Critical patent/WO2018157594A1/zh

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Classifications

    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/1752—Mounting within the printer

Definitions

  • the present invention relates to the field of electronic product technology, and in particular to the field of printing technology, and in particular to a print cartridge.
  • Inkjet printing is a relatively mature and widely used printing technology. Whether using bubble or piezoelectric printing technology, inkjet printing systems generally need a method to stably and controllably transport liquid media to be printed. Give the print head. A common method is to create a certain negative pressure in the ink cartridge. When printing, the ink in the ink cartridge is transported to the print head by the suction force of the print head. At the same time, the negative pressure can effectively keep the ink in the ink cartridge without leaking. .
  • the negative pressure can be produced in the ink cartridge by various methods, for example, by using a mechanical valve to manufacture a negative pressure in the ink cartridge, and by using a porous material to absorb the ink to produce a negative pressure in the ink cartridge.
  • inkjet printing generally requires high precision for negative pressure control in the ink cartridge
  • the former method requires high precision for the mechanical valve in the actual application, and the ink in the ink cartridge needs to be replenished after being printed and output to maintain the pressure stability.
  • the addition of air does not allow the ink to leak out of the ink cartridge, so the design of the ink cartridge is actually quite complicated.
  • the method of absorbing ink by a porous material to manufacture a negative pressure ink cartridge has the disadvantage of high residual ink amount in actual use, and the amount of residual ink of the ink cartridge which usually uses a sponge as an ink storage material accounts for 30-40% of the amount of ink injected, and the amount of residual ink On the one hand, high-cost ink is wasted, and on the other hand, it causes serious environmental pollution.
  • U.S. Pat. an ink cartridge is generally used in the market, and the ink cartridge adds an ink chamber to the above-mentioned ink storage material, and the negative pressure in the ink chamber causes the upper layer of the low ink absorbing ink storage material to be in a semi-dry state, when the ink is stored.
  • the ink in the ink chamber is replenished into the ink storage material by gas-liquid exchange with the air in the ink storage material, and the outside air passes through the ink storage material in the process of gas-liquid exchange.
  • the medium is replenished into the ink chamber so that the ink cartridge maintains a relatively low negative pressure while preventing ink leakage.
  • Such an ink cartridge generally reduces the amount of residual ink, but it does not solve the problem of residual ink in the underlying high-absorption ink-storing material, and at the same time, the ink capacity is greatly reduced after the ink cartridge is filled with the ink-storing material.
  • a print cartridge which has a simple structure, smooth printing, stable performance, large ink capacity, less residual ink, reduced waste and reduced environmental pollution.
  • an object of the present invention is to provide a print cartridge which has a simple structure, smooth printing, stable performance, and large ink capacity.
  • Another object of the present invention is to provide a print cartridge which has less residual ink, reduces waste and reduces environmental pollution.
  • a print cartridge of the present invention comprises a housing and an ink discharge device, an ink chamber is disposed in the inner cavity of the housing, and the ink discharge device is disposed at a bottom of the ink chamber, and is characterized in that
  • the print cartridge further includes:
  • first partition wall being disposed in the inner cavity of the casing to partition the inner cavity of the casing into the ink chamber and the communication cavity;
  • a first communication passage disposed between the first partition wall and a top of the housing, or at a top of the housing, or at an upper portion of the first partition wall Connecting the ink chamber and the communication chamber;
  • the buffer cavity is disposed in the communication cavity, the buffer cavity is provided with an opening, and the opening communicates with the first communication channel through the communication cavity;
  • the buffer chamber being disposed in the buffer chamber
  • first air guiding passage disposed in the housing and communicating with an outside atmosphere and the buffer chamber;
  • the gas-liquid exchange device is disposed in the buffer chamber, the buffer chamber is located on the gas-liquid exchange device, the gas-liquid exchange device has a capillary channel, and the buffer chamber passes through the capillary A passage connects the opening.
  • the ink referred to in the present invention generally refers to a liquid medium for printing, which may be ink or ink used in an inkjet printing system, or any liquid used in a 3D printing system, including but not limited to being light after printing. Cured liquid, metal nanoparticle solution, biomass solution, and the like.
  • the gas-liquid exchange device can perform gas-liquid exchange and maintain the pressure in the ink cartridge relatively stable, thereby Prints smoothly and prevents ink from leaking.
  • the working principle is that when the ink in the ink chamber is consumed during the printing process, the pressure in the ink chamber drops, and the pressure in the communication chamber also decreases, and the pressure difference between the communication chamber and the buffer chamber increases.
  • the ink of the capillary channel in the infiltration gas-liquid exchange device is moved to the end of the communication cavity by the pressure difference, the air in the buffer chamber enters the communication cavity, and then enters the ink cavity through the first communication channel, along with The amount of air entering the ink chamber is increased, and the pressure difference between the communication chamber and the buffer chamber is reduced, and the ink re-soaks the capillary passage under the action of the capillary force, thereby preventing the air in the buffer chamber from continuing to enter the communication chamber.
  • the gas-liquid exchange device keeps the pressure in the ink chamber and the communication chamber relatively stable while preventing ink leakage by using the pressure difference between the ink chamber and the communication chamber and the buffer chamber.
  • the air in the ink chamber contracts to form a negative pressure, and the outside air enters the ink chamber through a similar principle to make the pressure in the ink chamber relatively stable.
  • a large positive pressure difference is formed between the ink chamber and the outside world, such as air transport or the ink chamber is heated, the air in the ink chamber expands, and the air in the ink chamber passes through the first communication passage, the communication chamber, the gas-liquid exchange device, and the buffer chamber.
  • the first air guiding channel is discharged to the outside, and the ink in the communicating cavity is forcedly pressed into the buffer chamber through the capillary channel, but even if the ink in the communicating cavity enters the buffer chamber, the volume of the ink in the connecting cavity is limited. It will not leak to the outside through the first air guiding channel.
  • the ink chamber forms a negative pressure difference to the outside, and the ink temporarily stored in the buffer chamber will return to the communicating cavity.
  • the ink in the communication chamber and used to infiltrate the gas-liquid exchange device can be replaced by other liquids such as water, grease, organic solvents or solutions.
  • the use of different liquids can change the pressure difference between the ink chamber and the buffer chamber, as well as reduce the amount of expensive ink.
  • the first communication channel may be any suitable communication channel.
  • the first communication channel is a through hole, a tubular structure or a meandering labyrinth structure.
  • the inner wall of the capillary channel may be made of any suitable material.
  • the inner wall of the capillary channel is made of at least one selected from the group consisting of metal, ceramic, natural polymer material, synthetic polymer material and porous material. to make.
  • the choice of materials should be based on the performance of the ink and the requirements of the printing system. The materials selected should not be corroded by the ink, react with the ink, or impair the stability of the ink.
  • the inner wall of the capillary channel is made of corrosion resistant stainless steel.
  • the inner wall of the capillary channel is made of nylon.
  • the inner wall of the capillary channel is made of ceramic and polypropylene plastic. In a specific embodiment of the invention, the inner wall of the capillary channel is made of polypropylene plastic. In a specific embodiment of the invention, the inner wall of the capillary channel is made of polypropylene plastic and corrosion resistant stainless steel. In a specific embodiment of the invention, The inner wall of the capillary channel is made of a water guiding core and a polypropylene plastic. In a specific embodiment of the invention, the inner wall of the capillary channel is made of a water guiding core. The water guiding core can be made by bonding the fibers by glue or chemically.
  • the fiber component can be cotton, polyester, nylon, polyolefin, acrylic, and the like.
  • the glue may be acrylic, polyurethane or the like.
  • the water guiding core may also be physically or chemically bonded by a sheath core structure, an eccentric structure or a parallel structure of the bicomponent fibers, or may be sintered from a plastic powder such as polyolefin or polyester, metal powder or ceramic powder. Made of porous material.
  • the capillary channel may have any suitable shape, and may be straight or curved. Here, it mainly refers to a line through which the ink flows, that is, a longitudinal direction of the capillary channel. Preferably, the capillary channel is a straight line. Shape, non-linear or a combination of them. In a specific embodiment of the invention, the capillary channel is linear. In a specific embodiment of the invention, the capillary channel is non-linear.
  • the non-linear shape may have any suitable shape, and preferably, the non-linear shape is a diagonal line, a spiral shape, a double spiral shape, or a combination thereof. In a specific embodiment of the invention, the non-linear shape is oblique. In a specific embodiment of the invention, the non-linear shape is a spiral shape.
  • the cross section of the capillary channel may have any suitable shape.
  • the capillary channel has a circular, elliptical, circular, polygonal or a combination thereof.
  • the capillary channel has a circular cross section.
  • the capillary channel has a semi-circular cross section.
  • the capillary channel has a square cross section.
  • the capillary channel has a circular cross section.
  • the length of the capillary channel is the path through which the ink flows along the capillary channel and can be determined as desired.
  • the length of the capillary channel is 0.05 mm to 250 mm, and more preferably, the length of the capillary channel is 0.5. Mm to 15 mm.
  • the capillary channel has a length of 10 mm.
  • the capillary channel has a length of 1 mm. In a specific embodiment of the invention, the capillary channel has a length of 1.5 mm.
  • the capillary channel has a length of 250 mm. In a specific embodiment of the invention, the capillary channel has a length of 6 mm. In a specific embodiment of the invention, the capillary channel has a length of 8 mm. In a specific embodiment of the invention, the capillary channel has a length of 5 mm.
  • the thickness of the capillary channel is the diameter of the largest inscribed circle of the smallest cross section of the capillary channel, and the thickness can be determined according to requirements, to adapt to different inks, different ink cartridge structure designs, and different printing systems for pressure in the ink chamber.
  • the thickness is from 0.03 mm to 1 mm, and more preferably, The thickness is from 0.05 mm to 0.5 mm.
  • the thickness is 0.2 mm.
  • the thickness is 0.5 mm.
  • the thickness is 0.1 mm.
  • the thickness is 0.05 mm.
  • the thickness is 1 mm.
  • the thickness is 0.3 mm.
  • the thickness is 0.12 mm.
  • the thickness is 0.25 mm.
  • the width of the capillary channel is the distance between the two farthest points of the smallest cross section of the capillary channel, and the specific distance can be determined according to requirements, in order to adapt to different inks, different ink cartridge structure designs and different printing systems for the ink chamber
  • the pressure requirement preferably, the distance is from 0.03 mm to 50 mm, and more preferably, the distance is from 0.05 mm to 15 mm. In a specific embodiment of the invention, the distance is 0.2 mm. In a specific embodiment of the invention, the distance is 0.5 mm. In a specific embodiment of the invention, the distance is 2.3 mm. In a specific embodiment of the invention, the distance is 48 mm. In a specific embodiment of the invention, the distance is 8 mm.
  • the distance is 2 mm. In a specific embodiment of the invention, the distance is 1.5 mm. In a specific embodiment of the invention, the distance is 0.3 mm. In a specific embodiment of the invention, the distance is 0.12 mm. In a specific embodiment of the invention, the distance is 1 mm.
  • the gas-liquid exchange device may have any suitable structure.
  • the gas-liquid exchange device further has a core, and the capillary channel is disposed in the core.
  • the core body may have any suitable structure.
  • the core body includes a first core body and a second core body.
  • the second core body is provided with a through hole, and the first core body is inserted.
  • the capillary channel is disposed between the through hole and the first core or in the first core.
  • the capillary channel is disposed in the first core.
  • the capillary channel is disposed between the through hole and the first core.
  • the capillary channel may be formed by any suitable structure.
  • the cross section of the through hole is different from the cross section of the first core so as to be in the first core and the The capillary channel is formed between the through holes.
  • the outer wall of the first core is provided with a groove that abuts against an inner wall of the through hole to form the capillary channel between the first core and the through hole.
  • a groove may be provided on the inner wall of the through hole, the groove abutting against the outer wall of the first core to be in the first core The capillary channel is formed between the through hole.
  • the profile of the cross section of the first core may have any suitable shape.
  • the profile of the cross section of the first core is circular, elliptical, polygonal or a combination thereof.
  • the cross-sectional profile of the first core is circular.
  • the cross-sectional profile of the first core is square.
  • the profile of the cross section of the second core may have any suitable shape.
  • the profile of the cross section of the second core is circular, elliptical, polygonal or a combination thereof.
  • the cross-sectional profile of the second core is circular.
  • the cross-sectional profile of the second core is rectangular.
  • the number of the capillary channels can be determined as desired.
  • the number of the capillary channels is plural, and the plurality of capillary channels are connected in series and/or in parallel.
  • a plurality of said capillary channels are connected in series.
  • a plurality of said capillary channels are connected in parallel.
  • the maximum distance between the outer wall of the buffer chamber and the inner wall of the communication chamber may be determined as needed.
  • the maximum distance between the outer wall of the buffer chamber and the inner wall of the communication chamber is 0.1 mm to 5 mm, more preferably 0.5 mm to 3 mm, optimally, 1 mm to 2 mm.
  • the maximum distance is 0.5 mm; in a specific embodiment of the invention, the maximum distance is 5 mm; in a specific embodiment of the invention, the maximum distance 0.1 mm; in a specific embodiment of the invention, the maximum distance is 1.5 mm; in a specific embodiment of the invention, the maximum distance is 3 mm; in a specific embodiment of the invention, The maximum distance is 2 mm.
  • the opening may be disposed at any suitable position of the buffer chamber, preferably, the opening is disposed at a side of a lower portion of the buffer chamber; or the opening is disposed at a bottom of the buffer chamber and the There is a gap between the bottom of the buffer chamber and the bottom of the communication chamber.
  • the opening is disposed on a side of a lower portion of the buffer chamber and faces the ink chamber.
  • the opening is disposed on a side of a lower portion of the buffer chamber and faces away from the ink chamber.
  • the opening is disposed at a bottom of the buffer chamber and a gap exists between a bottom of the buffer chamber and a bottom of the communication chamber.
  • the opening is disposed at the bottom of the buffer chamber and the buffer chamber
  • the gap exists between the bottom and the bottom of the communication cavity
  • the print cartridge is further included a partition body extending from a bottom of the buffer chamber toward a bottom of the communication chamber such that the gap communicates the gap through a gap between the partition body and a bottom of the communication chamber The rest of the cavity.
  • the partition may be any suitable component, and in one embodiment of the invention, the partition is a partition.
  • the print cartridge further includes a gas injection port and an elastic hollow capsule.
  • the gas injection port is disposed on the casing, and the elastic hollow capsule is disposed in the ink chamber and communicates with the gas injection port to communicate with the outside atmosphere through the gas injection port.
  • the flexible hollow capsule can be mounted in any suitable location in the ink chamber, such as the top, bottom or side.
  • the elastic hollow bladder can be any suitable elastic hollow bladder, and in one embodiment of the invention, the resilient hollow bladder is a rubber bladder.
  • the first partition wall may have any suitable structure.
  • the first partition wall includes a vertical partition wall and a lateral partition wall, and the vertical partition wall and the lateral partition The partition walls are connected to each other and are respectively connected to the inner wall of the casing.
  • the first partition wall is a vertical partition wall that connects the inner wall of the casing, that is, there is no lateral partition wall.
  • the first air guiding channel may be any suitable air guiding channel.
  • the first air guiding channel is an air guiding hole, an air guiding tube, or a labyrinth air guiding groove.
  • the first air guiding channel is an air guiding hole.
  • the first air guiding channel is an air guiding tube.
  • the ink cartridge may have any suitable structure.
  • the print cartridge further includes:
  • a second partition wall disposed in the ink chamber to partition the ink chamber into two ink containing chambers, the ink discharging device being disposed in the ink receiving chamber away from the communication chamber The bottom;
  • a second communication passage disposed between the second partition wall and a bottom of the housing or disposed in a lower portion of the second partition wall to communicate the two ink containing chambers.
  • the provision of the second dividing wall described above helps to reduce the friction of the ink to the ink chamber and enhance the strength of the ink chamber.
  • the ink discharging device can adopt any suitable ink discharging device, and can be matched according to the matching printing head
  • the ink output line is designed to be an open-top valve made of spring, ball and rubber, or an ink-inducing material made of sponge, bonded fiber, or a mesh made of metal, or It is a membrane made of polymer material that can conduct and filter ink, or a film that seals the ink outlet to prevent ink from leaking from the ink outlet during storage and transportation of the ink cartridge.
  • the ink discharge device can be mechanically carded. It can also be attached to the ink cartridge by ultrasonic welding, heat welding or glue bonding.
  • the first air guiding channel is disposed in a top portion of the housing, and the printing ink cartridge further includes:
  • a third partition wall disposed in the inner cavity of the housing to separate the inner cavity of the housing into the ink chamber together with the first partition wall, the communication Cavity and air guiding chamber;
  • the second air guiding passage being disposed in a top portion of the casing
  • the third air guiding passage is disposed in a bottom of the casing, and the air guiding chamber communicates with the outside atmosphere through the third air guiding passage gas path;
  • a third communication passage disposed in a top of the housing and communicating the first air guide passage and the second air guide passage.
  • the second air guiding passage and the third air guiding passage are configured similarly to the first air guiding passage described above.
  • the third communication channel may have any suitable configuration.
  • the print cartridge further includes a sealing member, and the outer surface of the top of the housing is provided with a communication groove. a seal is sealed on the communication groove to form the third communication passage between the seal and the communication groove, the seal further sealing the first air guide channel and the On the second air guiding channel.
  • the ink cartridge further includes an ink injecting port disposed in the top of the housing and communicating with the outside atmosphere and the chamber.
  • the ink chamber is disposed in the top of the housing and communicating with the outside atmosphere and the chamber.
  • the print cartridge of the present invention divides the inner cavity of the housing into an ink chamber and a communication chamber through a first partition wall, the ink chamber and the communication chamber communicate through the first communication passage, and then a buffer chamber is disposed in the communication chamber, and the buffer chamber is disposed in the buffer chamber.
  • the gas-liquid exchange device and the buffer chamber are arranged, and the capillary channel of the gas-liquid exchange device is connected to the buffer chamber and the communication chamber, and the first air guiding channel is arranged on the casing and communicates with the outside atmosphere and the buffer chamber, and the gas-liquid exchange device performs gas-liquid exchange And maintain the pressure in the ink chamber relatively stable, even if the pressure in the ink chamber is too Large, it will not cause ink to leak.
  • this structure causes the air in the ink chamber to be first discharged to prevent the ink from being transferred from the ink chamber to the communication chamber.
  • the print cartridge of the present invention divides the inner cavity of the housing into an ink chamber and a communication chamber through a first partition wall, the ink chamber and the communication chamber communicate through the first communication passage, and then a buffer chamber is disposed in the communication chamber, and the buffer chamber is disposed in the buffer chamber.
  • the gas-liquid exchange device and the buffer chamber are arranged, and the capillary channel of the gas-liquid exchange device is connected to the buffer chamber and the communication chamber, and the first air guiding channel is arranged on the casing and communicates with the outside atmosphere and the buffer chamber, and the gas-liquid exchange device performs gas-liquid exchange
  • the pressure in the ink chamber is relatively stable and the performance is stable, and the gas-liquid exchange device does not easily block due to the placement position of the print cartridge.
  • the printing ink cartridge of the present invention performs gas-liquid exchange through the gas-liquid exchange device and maintains the pressure in the ink chamber relatively stable, so that the ink cartridge has a simple structure, but the printing is smooth and the performance is stable.
  • the print cartridge of the present invention has a simple structure and does not use an ink storage material. Therefore, the ink cartridge of the present invention has a large ink capacity, a small amount of residual ink, reduces waste, and reduces environmental pollution.
  • Figure 1 is a schematic view showing the internal structure of a first embodiment of a print cartridge of the present invention.
  • Fig. 1A is a front cross-sectional view showing the gas-liquid exchange device of the first embodiment shown in Fig. 1.
  • Figure 1B is a front cross-sectional view of a portion of the first embodiment of Figure 1 including an ink discharge device.
  • Figure 2 is a schematic view showing the internal structure of a second embodiment of the print cartridge of the present invention.
  • Fig. 2A is a front cross-sectional view showing the gas-liquid exchange device of the second embodiment shown in Fig. 2;
  • Fig. 2B is a front cross-sectional view showing another embodiment of the gas-liquid exchange device of the print cartridge of the present invention.
  • Figure 3 is a schematic view showing the internal structure of a third embodiment of the print cartridge of the present invention.
  • Fig. 3A is a front cross-sectional view showing the gas-liquid exchange device of the third embodiment shown in Fig. 3.
  • Fig. 3B is a schematic plan view of the gas-liquid exchange device of the third embodiment shown in Fig. 3.
  • Figure 4 is a schematic view showing the internal structure of a fourth embodiment of the print cartridge of the present invention.
  • Fig. 4A is a side cross-sectional view showing the gas-liquid exchange device of the fourth embodiment shown in Fig. 4.
  • 4B is a side cross-sectional view showing still another embodiment of the gas-liquid exchange device of the print cartridge of the present invention.
  • Figure 5 is a schematic view showing the internal structure of a fifth embodiment of the print cartridge of the present invention.
  • Fig. 5A is a front cross-sectional view showing the gas-liquid exchange device of the fifth embodiment shown in Fig. 5.
  • Figure 5B is a top plan view of the top of the housing of the fifth embodiment shown in Figure 5.
  • Fig. 5C is a front elevational view showing the first core of the gas-liquid exchange device of the fifth embodiment shown in Fig. 5.
  • Figure 6 is a schematic view showing the internal structure of a sixth embodiment of the print cartridge of the present invention.
  • Fig. 6A is a front cross-sectional view showing the gas-liquid exchange device of the sixth embodiment shown in Fig. 6.
  • Fig. 6B is a schematic plan view of the gas-liquid exchange device of the sixth embodiment shown in Fig. 6.
  • Figure 6C is a top plan view of the top of the housing of the sixth embodiment shown in Figure 6.
  • Figure 7 is a schematic view showing the internal structure of a seventh embodiment of the print cartridge of the present invention.
  • the print cartridge of the present invention comprises a housing 1, an ink discharge device 2, a first partition wall 3, a first air guiding passage 4, and a gas.
  • the liquid exchange device 5, the buffer chamber 7, the first communication passage 8 and the buffer chamber 9, the first partition wall 3 is disposed in the inner chamber of the housing 1 to partition the inner chamber of the housing 1 into the ink chamber 6 and the communication chamber 12
  • the ink discharge device 2 is disposed at the bottom of the ink chamber 6, and the first communication passage 8 is disposed between the first partition wall 3 and the top of the casing 1 to communicate
  • the ink chamber 6 and the communication chamber 12 the buffer chamber 9 is disposed in the communication chamber 12, the buffer chamber 9 is provided with an opening 14, the opening 14 communicates with the first communication passage 8 through the communication chamber 12, the buffer chamber 7 is disposed in the buffer chamber 9;
  • the first air guiding passage 4 is disposed in the top of the casing 1 and communicates with the outside atmosphere and the buffer chamber 7.
  • the gas-liquid exchange device 5 is disposed in the buffer chamber 9, and the buffer chamber 7 is located on the gas-liquid exchange device 5, and the gas-liquid exchange device 5 has a capillary channel 40, and the buffer chamber 7 communicates with the opening 14 through the capillary channel 40, so that the gas-liquid exchange device 5 blocks the ink 10 in the communication chamber 12 from flowing to the buffer chamber 7 and passing through the buffer chamber 7 and the first air guiding passage 4
  • the communication chamber 12 and the outside atmosphere are connected to automatically balance the pressure in the communication chamber 12.
  • the housing 1 and the buffer chamber 9 are each made of polypropylene plastic;
  • the first partition wall 3 is a vertical partition wall 31, and the vertical partition wall 31 connects the inner wall of the housing 1;
  • the first communication passage 8 is disposed in the vertical direction Between the partition wall 31 and the top of the casing 1;
  • the opening 14 is disposed on the side of the lower portion of the buffer chamber 9 and faces the ink chamber 6;
  • the buffer chamber 9 is disposed in the middle of the communication chamber 12, the outer wall of the buffer chamber 9 and the communication chamber
  • the maximum distance between the inner walls of 12 is 1.5 mm;
  • the first air guiding passage 4 is an air guiding hole;
  • the gas-liquid exchange device 5 has a core 54 including a first core 51 and a second core 52,
  • the second core body 52 is a polypropylene plastic cylinder with a rib, wherein a through hole 53 is provided, the first core body 51 is a corrosion-resistant stainless steel cylinder, is inserted in the through hole 53, and the capillar
  • the ink 10 in the present embodiment is a liquid having a surface tension of 0.01 to 0.073 N/m, such as a dye or pigment ink, a liquid or solution which can be photocured after printing, or a biomass solution or the like. Vacuum is drawn from the air guiding hole and then ink is injected, and after completion, the air guiding hole is closed, and at this time, the ink 10 in the communicating chamber 12 is infiltrated into the capillary channel 40.
  • the ink discharge device 2, as shown in Fig. 1B, is an overhead valve made of a spring 21, a ball 22, and a silicone rubber 23.
  • the spring 21, the ball 22 and the silicone rubber 23 are both disposed in the outer casing 24, the bottom of the outer casing 24 is open, and the silicone rubber 23 is disposed at a position close to the opening of the outer casing 24, and the springs 21 abut against the top of the outer casing 24, respectively.
  • the ball 22 thus abuts the ball 22 against the silicone rubber 23 to form a closed cavity 25, and the inner wall of the outer casing 24 is provided with an ink guiding slit 26 communicating with the closed cavity 25 and the ink chamber 6.
  • the air guiding hole When in use, the air guiding hole is opened, the ink cartridge is loaded into the printer, and the ink guiding tube on the printing head pushes the ball 22 in the ink discharging device 2 upward.
  • the ball 22 is separated from the silicone rubber 23, especially the center of the ball 22 is higher than the ink guiding slit.
  • the ink 10 flows through the ink guiding slit 26 into the printing head, and a relatively small negative is formed in the ink chamber 6.
  • Pressure The pressure in the ink chamber 6 is continuously decreased during printing, and the pressure in the communication chamber 12 is also continuously decreased.
  • the pressure difference between the communication chamber 12 and the buffer chamber 7 pushes the ink 10 in the capillary channel 40 toward the end of the communication chamber 12 until buffering.
  • the air in the chamber 7 enters the communication chamber 12 and then enters the ink chamber 6 through the first communication passage 8. As the amount of air entering the ink chamber 6 increases, the pressure in the ink chamber 6 rises, and the pressure difference between the communication chamber 12 and the buffer chamber 7 decreases until the capillary passage 40 is again wetted by the ink 10 to block the air in the buffer chamber 7. Further entry. As the printing proceeds, the above process is repeated until the ink 10 in the ink chamber 6 is finished.
  • the pressure in the ink chamber 6 is stabilized in a small range, usually not exceeding one thousand Pa. In some cases, if the pressure in the ink chamber 6 rises, the ink 10 in the communication chamber 12 can be released to the buffer chamber 7 through the capillary channel 40, and even if the volume of the communication chamber 12 is limited, even the ink 10 in the communication chamber 12 All of the ink is released to the buffer chamber 7, and the ink 10 is not leaked through the first air guide passage 4. When the pressure in the ink chamber 6 drops, the ink 10 in the buffer chamber 7 returns to the communication chamber 12.
  • the second embodiment of the present invention is similar to the structure and working principle of the embodiment 1, except that the first communication passage 8 is disposed in the upper portion of the vertical partition wall 31; the opening 14 is provided.
  • a part of the side, that is, the common side, the maximum distance between the outer wall of the buffer chamber 9 and the inner wall of the communication chamber 12 is 0.5 mm;
  • the core 54 of the gas-liquid exchange device 5 is a single piece, which is a nylon 6 cylinder with a rib.
  • the capillary channel 40 is formed directly in the intermediate hole of the nylon 6 cylinder, specifically, the inner wall of the intermediate hole of the nylon 6 cylinder is formed with the ribs facing inward.
  • the capillary channel 40 has a length of 1 mm and an inner diameter of 0.5 mm as shown in Fig. 2A.
  • the ink cartridge of Embodiment 2 is more convenient to manufacture and lower in cost.
  • the shape, length, thickness and width of the capillary channel 40 can be adjusted accordingly, depending on the pressure control requirements of the printing system for the ink chamber 6.
  • the above-mentioned gas-liquid exchange device 5 can be selected by using different polymer materials, such as nylon 6, nylon 66, nylon 1010, and poly-p-phenylene. Ethylene formate, polybutylene terephthalate, polycarbonate, polypropylene, polystyrene, polyoxymethylene, polyphenylene ether, etc., ABS, and the like.
  • the second core 52 is caught in the gas-liquid exchange device 5 by the ribs, or the second core 52 and the remaining portion of the gas-liquid exchange device 5 are integrally formed as shown in FIG. 2B, and the second core 52 and the gas-liquid are integrally formed.
  • the rest of the switching device 5 The fractions may be the same or different kinds of polymer materials.
  • the gas-liquid exchange device 5 can be separately molded and then assembled in the buffer chamber 9, or can be integrally formed with the buffer chamber 9. When integrally formed, the buffer chamber 9 and the gas-liquid exchange device 5 can be of the same kind or different kinds of polymer materials. It should be noted that if the ink 10 has insufficient wettability to the capillary channel 40 made of a certain polymer material, the formed capillary channel 40 may be subjected to surface hydrophilic treatment to be easily infiltrated by the ink 10.
  • the third embodiment of the present invention is similar to the structure and working principle of the first embodiment, with the difference that the first partition wall 3 includes a vertical partition wall 31 and a horizontal partition wall 32, and the vertical direction
  • the partition wall 31 and the lateral partition wall 32 are connected to each other and respectively connected to the inner wall of the casing 1;
  • the two sides of the buffer chamber 9 are respectively a part of the two sides of the communication chamber 12, that is, the common sides, the outer wall of the buffer chamber 9 and the communication chamber 12
  • the maximum distance between the inner walls is 0.1 mm;
  • the first core 51 of the core 54 of the gas-liquid exchange device 5 is a ceramic cylinder having a diameter of 3 mm, and the second core 52 is integrated with the other portions of the gas-liquid exchange device 5.
  • a partial outline of the second core 52 is outlined by a broken line, and the inner wall of the through hole 53 of the second core 52 is designed with an annular notch on the opposite sides and a ceramic inserted into the through hole 53.
  • the cylinder constitutes two capillary channels 40, the capillary channel 40 having a circular cross section, and the capillary channel 40 having a length of 1.5 mm, a thickness of 0.1 mm and a width of 2.3 mm.
  • the ceramic is resistant to high temperatures, has good stability to various inks 10, and is not easily corroded. If the casing 1 of the ink cartridge is made of high temperature resistant plastic or metal, it can be used for liquids requiring higher temperature printing.
  • the fourth embodiment of the present invention is similar to the structure and working principle of the first embodiment.
  • the difference is that the three sides of the buffer cavity 9 are respectively a part of the three sides of the communication cavity 12, that is, the common three.
  • the maximum distance between the outer wall of the buffer chamber 9 and the inner wall of the communication chamber 12 is 5 mm;
  • the core 54 of the gas-liquid exchange device 5 is a single piece having a rectangular parallelepiped shape and integrally formed with the rest of the gas-liquid exchange device 5.
  • the outline of the core 54 is outlined by a dashed line.
  • the capillary channel 40 is horizontally disposed in the core 54 and is also a rectangular parallelepiped having a length of 1.5 mm, a thickness of 0.05 mm, a width of 48 mm, and a transverse width of the capillary channel 40.
  • the section is rectangular.
  • This ink cartridge structure is very simple.
  • four ribs 55 having a width of 2 mm may be uniformly added into the capillary channel 40 to become a capillary channel 40 having 5 parallel widths of 8 mm, and the length and thickness of the capillary channel 40 Do not Change, as shown in FIG.
  • the ink discharge device 2 is an ink guiding material made of sponge or fiber; further includes a second partition wall 18 and a second communication passage 19, and the second partition wall 18 is disposed in the ink chamber 6 so as to be
  • the ink chamber 6 is partitioned into two ink containing chambers 16, the ink discharge device 2 is disposed at the bottom of the ink containing chamber 16 remote from the communication chamber 12, and the second communication passage 19 is disposed at the bottom of the second partition wall 18 and the housing 1.
  • the two ink containing chambers 16 are thus connected.
  • the ink discharge device 2 is first sealed with a sealing cover 17 from the outside, and then vacuumed from the air guiding hole and then inked, and the air guiding hole is closed after completion.
  • the air guiding hole and the sealing cover 17 of the ink discharge device 2 are opened, and the ink cartridge is loaded into the printer.
  • the ink 10 in the communication chamber 12 is infiltrated into the capillary channel 40, and the pressure in the communication chamber 12 and the ink chamber 6 is in an equilibrium state.
  • the ink 10 in the ink containing chamber 16 connected to the ink discharge device 2 at the time of printing is first consumed, and the ink 10 in the adjacent ink containing chamber 16 is replenished to be connected to the ink discharging device 2 through the second communication passage 19 therebetween.
  • the pressure in the adjacent ink accommodating chamber 16 is lowered, and the pressure in the communication chamber 12 is also lowered.
  • the buffer chamber 7 When the pressure difference between the communication chamber 12 and the buffer chamber 7 is sufficiently large, the buffer chamber 7 is The air enters the communication chamber 12 through the capillary channel 40 in the gas-liquid exchange device 5 therebetween, and then enters the adjacent ink containing chamber 16, and the pressure in the adjacent ink containing chamber 16 rises until the capillary channel 40 is re-entered The ink 10 in the communication chamber 12 is wetted. This process is repeated until the ink 10 in the adjacent ink containing chamber 16 is used up, and the subsequent printing process is similar to that of the first embodiment.
  • the plurality of ink containing chambers 16 connected in series can increase the ink capacity and improve resource utilization.
  • the fifth embodiment of the present invention is similar to the structure and working principle of the first embodiment, and the difference is that the second core 52 of the core 54 of the gas-liquid exchange device 5 and the gas-liquid exchange device The other parts of the 5 are integrally formed.
  • the partial outline of the second core 52 is outlined by a broken line, and the through hole 53 is opened in the second core 52.
  • the inner diameter of the through hole 53 is 8 mm, and the core of the gas-liquid exchange device 5 is used.
  • the outer side of the first core 51 of the 54 is engraved with a spiral groove 56, wherein the first core 51 has a diameter of 10 mm, a height of 20 mm, a pitch of 2.5 mm, and a cross-sectional shape of the spiral groove 56 is a semicircle, a diameter of a semicircle. It is 2 mm.
  • the first core 51 is inserted into the through hole 53, and the spiral groove 56 abuts against the inner wall of the through hole 53, thereby forming a capillary passage 40 between the spiral groove 56 and the through hole 53, and the capillary passage 40 has a cross section of half
  • the circular, capillary channel 40 has a length of 250 mm, a thickness of 1 mm, and a width of 2 mm;
  • the three sides of the buffer chamber 9 are respectively a part of three sides of the communication chamber 12, that is, a common three sides, an outer wall of the buffer chamber 9 and
  • the maximum distance between the inner walls of the communication chamber 12 is 3 mm;
  • the cavity 36 is connected to the outside atmosphere through the third air guiding passage 35, and the outer surface of the top of the casing 1 is provided with a communication groove 37 (see FIG. 5B), and the sealing member is sealed on the communicating groove 37 so as to be in the seal and A third communication passage (not shown) is formed between the communication grooves 37, and the third communication passage communicates with the first air guiding passage 4 and the second air guiding passage 34, respectively, and the sealing member is further sealed in the first air guiding passage 4 And in the second air guiding passage 34, in the embodiment, the second air guiding passage 34 and the third air guiding passage 35 are both air guiding holes.
  • the first air guiding passage 4 is evacuated and then inked, and after completion, the first air guiding passage 4, the communication groove 37 and the second air guiding passage 34 are closed by a sealing member, and the third air guiding passage is closed. 35.
  • the third air guiding passage 35 is opened to load the ink cartridge into the printer.
  • the ink 10 in the communication chamber 12 is infiltrated into the capillary channel 40, and the pressure in the communication chamber 12 and the ink chamber 6 is in an equilibrium state.
  • the pressure change and the gas-liquid exchange principle in the ink chamber 6 at the time of printing are similar to those in the first embodiment, except that the ink leakage in the air or buffer chamber 7 needs to pass through the third communication passage, the second air guide passage 34, the air guide chamber 36, and The third air guiding passage 35 further enhances the ink leakage prevention capability of the print cartridge.
  • the sixth embodiment of the present invention is similar to the structure and working principle of the first embodiment.
  • the difference is that the three sides of the buffer cavity 9 are respectively a part of the three sides of the communication cavity 12, that is, sharing.
  • the maximum distance between the outer wall of the buffer chamber 9 and the inner wall of the communication chamber 12 is 3 mm;
  • the gas-liquid exchange device 5 is similar to the gas-liquid exchange device 5 in the embodiment 3, but is replaced by a water-conducting core having a diameter of 2 mm.
  • the ceramic cylinder has a total of four capillary channels 40 in the upper and lower groups.
  • the water guiding core in the embodiment is formed by bonding the fibers by glue or chemical method, and the fiber components may be cotton, polyester, nylon, polyolefin, Acrylic and so on.
  • the glue may be made of acrylic, polyurethane or the like.
  • the water-conducting core in this embodiment may also be formed by thermally or chemically bonding the bicomponent fibers of the core-sheath structure, the eccentric structure or the side-by-side structure, or by polyolefin or poly.
  • a porous material obtained by sintering a plastic powder such as an ester, a metal powder or a ceramic powder, wherein the water-conducting core has a porosity of between 20% and 90%, and the capillary channel 40 has a length of 1 mm and a thickness of 0.1 mm, width 1.5 mm; further comprising an ink filling port 11 disposed in the top of the casing 1 and communicating with the outside atmosphere and the ink chamber 6; the outer surface of the top of the casing 1 is also provided with a meandering The labyrinth groove 44 and the perforation 43 (see Fig.
  • a seal e.g., a film weld
  • a first communication passage is formed between the through holes 43, and the first communication passage communicates with the ink chamber 6 and the communication chamber 12, respectively.
  • ink is injected from the ink filling port 11 to the ink chamber 6, and an appropriate amount of water is injected from the first air guiding passage 4 to the buffer chamber 7.
  • the ink filling port 11, the labyrinth groove 44 and the perforation are sealed by film welding. 43, the post-weld ink fill port 11, the labyrinth groove 44 and the perforations 43 together form a first communication channel of the tortuous labyrinth structure. Open the air vents during use and load the ink cartridges into the printer.
  • the pressure change and the gas-liquid exchange principle in the ink chamber 6 at the time of printing are similar to those in the first embodiment, and the first communication passage of the meandering labyrinth structure makes the flow of the liquid between the ink chamber and the communication chamber difficult, but does not hinder the gas freedom. flow.
  • the seventh embodiment of the present invention is similar to the structure and working principle of the second embodiment.
  • the difference is that the partition body 13 is further included.
  • the partition body 13 extends from the bottom of the buffer chamber 9 toward the bottom of the communication chamber 12.
  • the gap 15 communicates with the rest of the communication chamber 12 through the gap between the partition body 13 and the bottom of the communication chamber 12; further includes a gas injection port 41 and an elastic hollow capsule 42, and the gas injection port 41 is disposed in the casing 1 (specifically, the shell)
  • the elastic hollow capsule 42 is disposed in the ink chamber 6 and communicates with the gas injection port 41 to communicate with the outside atmosphere through the gas injection port 41.
  • the gas injection device on the printer is connected to the gas injection port 41.
  • the elastic contraction of the hollow capsule 42 is restored to the original state, and the gas entering therein is extruded, and the volume of the air in the ink chamber 6 is increased, and the pressure is reduced to form a negative pressure. Further, if the print cartridge is turned upside down, a part of the ink of the communication chamber 6 is held around the gas-liquid exchange device 5 because of the presence of the partitioning body 13, and the gas-liquid exchange device 5 is always immersed by the ink 10, and is not easily clogging. When the print head needs to be cleaned, it is rapidly inflated into the elastic hollow capsule 42, and the elastic hollow capsule 42 is rapidly inflated, and the liquid or gas is due to the capillary passage 40.
  • the limitation is that the velocity discharged from the communication chamber 12 to the buffer chamber 7 is slow, so that a higher pressure is formed in the ink chamber 6, and the pressure in the ink chamber 6 is conducted to the print head through the ink and the ink is quickly ejected from the print head. Achieve the purpose of cleaning the print head.
  • the elastic hollow capsule 42 is then contracted and a negative pressure is created in the ink chamber 6.
  • the capillary channel 40 in FIG. 1B may be used.
  • the oblique shape is formed obliquely with respect to the current vertical straight line shape; the shape, cross section, length, thickness, width, and the like of the capillary channel 40 can be changed as needed.
  • the present invention provides a print cartridge that uses a gas-liquid exchange device for gas-liquid exchange and maintains a relatively stable pressure in the ink cartridge, which is smooth in printing and large in ink capacity, and is disposed through the first partition wall so that even the pressure in the ink chamber Too large, the ink leaking into the buffer chamber is also very limited, does not cause ink leakage, and makes the gas-liquid exchange device not easily blocked due to the placement position of the print cartridge.
  • the print cartridge has a simple structure, stable performance, easy manufacture, and can almost completely use up the printing liquid, thereby reducing waste caused by residual ink and environmental pollution.
  • the advantages of the invention are in particular:
  • the printing ink cartridge of the invention has the advantages of simple structure, unique design and ingeniousness, and the pressure in the ink chamber is controlled by the gas-liquid exchange device, and the gas-liquid exchange is performed, the printing is smooth, and the ink capacity is large.
  • the print cartridge of the present invention has a simple structure and a unique design. By providing a first partition wall, even if the pressure in the ink chamber is too large, the ink in the leak buffer chamber is very limited, does not cause ink leakage, and allows gas-liquid exchange. The device does not easily block due to the placement of the print cartridge.
  • the printing ink cartridge of the invention does not need to use the ink storage material, and the amount of residual ink is extremely small, thereby reducing ink waste and environmental pollution caused by residual ink.
  • the ink cartridge of the invention has large ink capacity, and can design a plurality of ink chambers or an external continuous ink supply system, thereby greatly improving resource utilization.
  • the print cartridge of the present invention can flexibly adopt various types of ink discharge devices as needed, and is suitable for various types of print heads and printing systems.
  • the print cartridge of the present invention uses a liquid as a print medium, and the ink cartridge can be used in a general ink jet printing system as well as in a 3D printing system.

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Abstract

一种打印墨盒，包括壳体（1）和出墨装置（2），还包括第一分隔壁（3），其将壳体（1）的内腔分隔为墨水腔（6）和连通腔（12），墨水腔（6）和连通腔（12）通过第一连通通道（8）连通，缓冲腔（9）设置在连通腔（12）中，缓冲腔（9）上的开口（14）通过连通腔（12）连通第一连通通道（8），缓冲室（7）和气液交换装置设置在缓冲腔（9）中，且缓冲室（7）在上，第一导气通道（4）设置在壳体（1）中并连通外界大气与缓冲室（7），气液交换装置具有毛细通道（40），缓冲室（7）通过毛细通道（40）连通开口（14）。本发明的打印墨盒性能稳定，结构简单、打印流畅、墨水容量大、残墨量少，减少浪费并减少环境污染。

Description

一种打印墨盒 技术领域
本发明涉及电子产品技术领域，特别涉及打印技术领域，具体是指一种打印墨盒。
背景技术
喷墨打印是一种比较成熟并且被广泛应用的打印技术，无论是采用气泡式还是压电式打印技术，喷墨打印系统一般需要用某种方法稳定且可控地将被打印的液体介质输送给打印头。常用的方法是在墨盒内制造一定的负压，打印时墨盒中的墨水在打印头抽吸力的作用下被输送至打印头，同时，负压能有效地将墨水保持在墨盒中而不泄漏。
墨盒中制造负压可以用各种方法，比如，用机械阀门的方法制造墨盒中的负压，用多孔材料吸收墨水的方法制造墨盒中的负压等。
因为喷墨打印通常对墨盒中负压控制的精度要求较高，实际应用中前一种方法对机械阀门的精度要求很高，同时墨盒中的墨水被打印输出后需要补充空气以维持压力稳定，但补充空气的同时不能让墨水从墨盒中泄漏出去，所以实际上墨盒的设计相当复杂。
用多孔材料吸收墨水的方法制造负压的墨盒在实际使用中有残墨量高的缺点，通常用海绵做储墨材料的墨盒的残墨量占注入墨水量的30-40％，残墨量高一方面浪费了昂贵的墨水，另一方面会造成严重的环境污染。专利号为US 6,394,591 B1的美国专利透露了一种用纤维制造的储墨材料填充墨盒，同时采用将不同吸墨能力的纤维储墨材料进行组合使用的方法来部分降低残墨量。现在市场上还普遍使用一种墨盒，这种墨盒在上述储墨材料的基础上增加一个墨水腔，墨水腔中的负压使上层低吸墨能力的储墨材料处于半干状态，当储墨材料中的墨水被消耗到一定程度时，墨水腔中的墨水通过与储墨材料中的空气进行气液交换的方法被补充到储墨材料中，外界空气通过储墨材料在气液交换的过程中被补充到墨水腔中，从而使墨盒保持负压相对稳定的同时防止墨水泄漏。 这种墨盒从总体上降低了残墨量，但始终不能解决下层高吸收储墨材料中的残墨问题，同时，墨盒填充储墨材料后墨水容量都会大大减小。
因此，希望提供一种打印墨盒，其结构简单、打印流畅、性能稳定、墨水容量大，残墨量少，减少浪费并减少环境污染。
发明内容
为了克服上述现有技术中的缺点，本发明的目的在于提供一种打印墨盒，其结构简单、打印流畅、性能稳定、墨水容量大。
本发明的另一目的在于提供一种打印墨盒，其残墨量少，减少浪费并减少环境污染。
为达到以上目的，本发明的打印墨盒包括壳体和出墨装置，所述壳体的内腔中设置有墨水腔，所述出墨装置设置在所述墨水腔的底部，其特点是，所述打印墨盒还包括：
第一分隔壁，所述第一分隔壁设置在所述的壳体的内腔中从而将所述的壳体的内腔分隔为所述墨水腔和连通腔；
第一连通通道，所述第一连通通道设置在所述第一分隔壁和所述壳体的顶部之间、或设置在所述壳体的顶部、或设置在所述第一分隔壁的上部中从而连通所述墨水腔和所述连通腔；
缓冲腔，所述缓冲腔设置在所述连通腔中，所述缓冲腔上设置有开口，所述开口通过所述连通腔连通所述第一连通通道；
缓冲室，所述缓冲室设置在所述缓冲腔中；
第一导气通道，所述第一导气通道设置在所述壳体中并连通外界大气与所述缓冲室；以及
气液交换装置，所述气液交换装置设置在所述缓冲腔中，所述缓冲室位于所述气液交换装置上，所述气液交换装置具有毛细通道，所述缓冲室通过所述毛细通道连通所述开口。
本发明中提到的墨水泛指用于打印的液体介质，可以是喷墨打印系统中使用的墨水或油墨，也可以是3D打印系统中使用的任何液体，包括但不限于打印后可以被光固化的液体、金属纳米颗粒溶液、生物质溶液等。
所述气液交换装置能进行气液交换并维持墨盒内的压力相对稳定，从而使 打印流畅，并防止墨水泄漏。其工作原理是，当墨水腔中的墨水在打印过程中被消耗的时候，墨水腔内的压力下降，进而连通腔内的压力也下降，连通腔与缓冲室之间的压差增大，当压差达到一定程度时，浸润气液交换装置中毛细通道的墨水在压差的推动下向连通腔一端移动，缓冲室中的空气进入连通腔，然后通过第一连通通道进入墨水腔，随着进入墨水腔的空气量增加，连通腔与缓冲室之间的压差减小，在毛细力的作用下墨水重新浸润毛细通道，从而阻止缓冲室中的空气继续进入连通腔。由此，所述气液交换装置保持墨水腔及连通腔内的压力相对稳定，同时利用墨水腔及连通腔与缓冲室之间的压差防止墨水泄漏。当墨盒温度下降时，墨水腔中的空气收缩形成负压，外界空气通过类似的原理进入墨水腔从而使墨水腔内的压力相对稳定。当墨水腔内与外界形成较大正压差时，如空运或墨水腔被加热，墨水腔内的空气膨胀，墨水腔内的空气通过第一连通通道、连通腔、气液交换装置、缓冲室，经第一导气通道排至外界，同时连通腔中的墨水会通过毛细通道被强制压入到缓冲室，但即使连通腔中的墨水全部进入缓冲室，由于连通腔内墨水的体积有限，也不会通过第一导气通道泄露至外界，当外界环境恢复正常时，墨水腔对外界形成负压差，这时临时储存在缓冲室中的墨水会返回连通腔中。
在需要的时候，连通腔中和用于浸润气液交换装置的墨水可以被其它液体替代，如水、油脂、有机溶剂或溶液。采用不同的液体可以改变墨水腔和缓冲室之间的压差，也可以减少贵重墨水的用量。
所述第一连通通道可以是任何合适的连通通道，较佳地，所述第一连通通道为通孔、管状结构或曲折的迷宫结构。
所述毛细通道的内壁可以采用任何合适的材料制成，较佳地，所述毛细通道的内壁由选自金属、陶瓷、天然高分子材料、合成高分子材料和多孔材料中的至少一种制成。材料的选择应根据墨水的性能和打印系统的要求决定，选择的材料应不被墨水腐蚀、不与墨水反应、不损害墨水的稳定性。在本发明的一具体实施例中，所述毛细通道的内壁由耐腐蚀不锈钢制成。在本发明的一具体实施例中，所述毛细通道的内壁由尼龙制成。在本发明的一具体实施例中，所述毛细通道的内壁由陶瓷和聚丙烯塑料制成。在本发明的一具体实施例中，所述毛细通道的内壁由聚丙烯塑料制成。在本发明的一具体实施例中，所述毛细通道的内壁由聚丙烯塑料和耐腐蚀不锈钢制成。在本发明的一具体实施例中， 所述毛细通道的内壁由引水芯和聚丙烯塑料制成。在本发明的一具体实施例中，所述毛细通道的内壁由引水芯制成。引水芯可以由纤维经胶水或化学方法粘结而成。纤维的成份可以为棉、聚酯、尼龙、聚烯烃、亚克力等。胶水可以为亚克力、聚氨酯等。引水芯也可以由皮芯结构、偏芯结构或并列结构的双组份纤维用物理或者化学的方法粘结制成，或者由聚烯烃、聚酯等塑料粉末、金属粉末或陶瓷粉末烧结而成的多孔材料制成。
所述毛细通道可以具有任何合适的形状，可以是直的，也可以是弯的，这里主要指墨水流经的线路，即毛细通道的长度方向的设置，较佳地，所述毛细通道为直线形、非直线形或它们的组合。在本发明的一具体实施例中，所述毛细通道为直线形。在本发明的一具体实施例中，所述毛细通道为非直线形。
所述非直线形可以具有任何合适的形状，较佳地，所述非直线形为斜线形、螺旋形、双螺旋形或它们的组合。在本发明的一具体实施例中，所述非直线形为斜线形。在本发明的一具体实施例中，所述非直线形为螺旋形。
所述毛细通道的横截面可以具有任何合适的形状，较佳地，所述毛细通道的横截面为圆形、椭圆形、环形、多边形或它们的组合。在本发明的一具体实施例中，所述毛细通道的横截面为圆形。在本发明的一具体实施例中，所述毛细通道的横截面为半圆形。在本发明的一具体实施例中，所述毛细通道的横截面为正方形。在本发明的一具体实施例中，所述毛细通道的横截面为环形。
所述毛细通道的长度为墨水沿毛细通道流经的路程，可以根据需要确定。为适应不同墨水、不同墨盒结构设计和不同打印系统对墨水腔内压力的要求，较佳地，所述毛细通道的长度为0.05毫米至250毫米，更佳地，所述毛细通道的长度为0.5毫米至15毫米。在本发明的一具体实施例中，所述毛细通道的长度为10毫米。在本发明的一具体实施例中，所述毛细通道的长度为1毫米。在本发明的一具体实施例中，所述毛细通道的长度为1.5毫米。在本发明的一具体实施例中，所述毛细通道的长度为250毫米。在本发明的一具体实施例中，所述毛细通道的长度为6毫米。在本发明的一具体实施例中，所述毛细通道的长度为8毫米。在本发明的一具体实施例中，所述毛细通道的长度为5毫米。
所述毛细通道的厚度为所述毛细通道的最小横截面的最大内切圆的直径，所述厚度可以根据需要确定，为适应不同墨水、不同墨盒结构设计和不同打印系统对墨水腔内压力的要求，较佳地，所述厚度为0.03毫米至1毫米，更佳地， 所述厚度为0.05毫米至0.5毫米。在本发明的一具体实施例中，所述厚度为0.2毫米。在本发明的一具体实施例中，所述厚度为0.5毫米。在本发明的一具体实施例中，所述厚度为0.1毫米。在本发明的一具体实施例中，所述厚度为0.05毫米。在本发明的一具体实施例中，所述厚度为1毫米。在本发明的一具体实施例中，所述厚度为0.3毫米。在本发明的一具体实施例中，所述厚度为0.12毫米。在本发明的一具体实施例中，所述厚度为0.25毫米。
所述毛细通道的宽度为所述毛细通道的最小横截面的最远的两点间的距离，具体的距离可以根据需要确定，为适应不同墨水、不同墨盒结构设计和不同打印系统对墨水腔内压力的要求，较佳地，所述距离为0.03毫米至50毫米，更佳地，所述距离为0.05毫米至15毫米。在本发明的一具体实施例中，所述距离为0.2毫米。在本发明的一具体实施例中，所述距离为0.5毫米。在本发明的一具体实施例中，所述距离为2.3毫米。在本发明的一具体实施例中，所述距离为48毫米。在本发明的一具体实施例中，所述距离为8毫米。在本发明的一具体实施例中，所述距离为2毫米。在本发明的一具体实施例中，所述距离为1.5毫米。在本发明的一具体实施例中，所述距离为0.3毫米。在本发明的一具体实施例中，所述距离为0.12毫米。在本发明的一具体实施例中，所述距离为1毫米。
所述气液交换装置可以具有任何合适的结构，在本发明的一具体实施例中，所述气液交换装置还具有芯体，所述毛细通道设置在所述芯体中。
所述芯体可以具有任何合适的结构，较佳地，所述芯体包括第一芯体和第二芯体，所述第二芯体中设置有通孔，所述第一芯体插接在所述通孔中，所述毛细通道设置在所述通孔和所述第一芯体之间或在所述第一芯体中。在本发明的一具体实施例中，所述毛细通道设置在所述第一芯体中。在本发明的一具体实施例中，所述毛细通道设置在所述通孔和所述第一芯体之间。
所述毛细通道可以采用任何合适的结构形成，在本发明的一具体实施例中，所述通孔的截面与所述第一芯体的截面不相同从而在所述第一芯体和所述通孔之间形成所述毛细通道。
例如，所述第一芯体的外壁上设置有凹槽，所述凹槽抵靠所述通孔的内壁从而在所述第一芯体和所述通孔之间形成所述毛细通道。或者也可以在所述通孔的内壁上设置凹槽，所述凹槽抵靠所述第一芯体的外壁从而在所述第一芯体 和所述通孔之间形成所述毛细通道。
所述第一芯体的横截面的外形轮廓可以具有任何合适的形状，较佳地，所述第一芯体的横截面的外形轮廓为圆形、椭圆形、多边形或它们的组合。在本发明的一具体实施例中，所述第一芯体的横截面的外形轮廓为圆形。在本发明的一具体实施例中，所述第一芯体的横截面的外形轮廓为正方形。
所述第二芯体的横截面的外形轮廓可以具有任何合适的形状，较佳地，所述第二芯体的横截面的外形轮廓为圆形、椭圆形、多边形或它们的组合。在本发明的一具体实施例中，所述第二芯体的横截面的外形轮廓为圆形。在本发明的一具体实施例中，所述第二芯体的横截面的外形轮廓为长方形。
所述毛细通道的数目可以根据需要确定，较佳地，所述毛细通道的数目为多个，多个所述毛细通道串联和/或并联。在本发明的一具体实施例中，多个所述毛细通道串联。在本发明的一具体实施例中，多个所述毛细通道并联。
所述的缓冲腔的外壁和所述的连通腔的内壁之间的最大距离可以根据需要确定，较佳地，所述的缓冲腔的外壁和所述的连通腔的内壁之间的最大距离为0.1毫米-5毫米，更佳地，0.5毫米至3毫米，最佳地，1毫米至2毫米。在本发明的一具体实施例中，所述最大距离为0.5毫米；在本发明的一具体实施例中，所述最大距离为5毫米；在本发明的一具体实施例中，所述最大距离为0.1毫米；在本发明的一具体实施例中，所述最大距离为1.5毫米；在本发明的一具体实施例中，所述最大距离为3毫米；在本发明的一具体实施例中，所述最大距离为2毫米。
所述开口可以设置在所述缓冲腔的任何合适的位置，较佳地，所述开口设置在所述缓冲腔的下部的侧面；或者，所述开口设置在所述缓冲腔的底部且所述的缓冲腔的底部和所述连通腔的底部之间存在空隙。在本发明的一具体实施例中，所述开口设置在所述缓冲腔的下部的侧面，并朝向所述墨水腔。在本发明的一具体实施例中，所述开口设置在所述缓冲腔的下部的侧面，并背向所述墨水腔。在本发明的一具体实施例中，所述开口设置在所述缓冲腔的底部且所述的缓冲腔的底部和所述连通腔的底部之间存在空隙。
为了进一步防止气液交换装置由于打印墨盒的摆放位置而易干堵塞的问题，在本发明的一具体实施例中，所述开口设置在所述的缓冲腔的底部且所述的缓冲腔的底部和所述的连通腔的底部之间存在所述空隙，所述打印墨盒还包 括隔断体，所述隔断体从所述的缓冲腔的底部朝向所述的连通腔的底部延伸从而所述空隙通过所述隔断体和所述的连通腔的底部之间的间隙连通所述连通腔的其余部分。
所述隔断体可以是任何合适的部件，在本发明的一具体实施例中，所述隔断体是隔断板。
为了方便在墨水腔中形成负压或对出墨口进行瞬间的高正压冲击以便对打印头进行清洗，在本发明的一具体实施例中，所述打印墨盒还包括注气口和弹性空心囊体，所述注气口设置在所述壳体上，所述弹性空心囊体设置在所述墨水腔中并连通所述注气口从而通过所述注气口连通所述外界大气。弹性空心囊体可以安装在墨水腔中任何合适的位置，比如顶部、底部或侧面。
所述弹性空心囊体可以是任何合适的弹性空心囊体，在本发明的一具体实施例中，所述弹性空心囊体是橡胶气囊。
所述第一分隔壁可以具有任何合适的结构，在本发明的一具体实施例中，所述第一分隔壁包括竖向分隔壁和横向分隔壁，所述竖向分隔壁和所述横向分隔壁相互连接且分别连接所述壳体的内壁。或者，还可以，在本发明的一具体实施例中，所述第一分隔壁为竖向分隔壁，所述竖向分隔壁连接所述壳体的内壁，即不存在横向分隔壁。
所述第一导气通道可以是任何合适的导气通道，较佳地，所述第一导气通道为导气孔、导气管、或迷宫导气槽。在本发明的一具体实施例中，所述第一导气通道为导气孔。在本发明的一具体实施例中，所述第一导气通道为导气管。
所述墨水腔可以具有任何合适的结构，在本发明的一具体实施例中，所述打印墨盒还包括：
第二分隔壁，所述第二分隔壁设置在所述墨水腔中从而将所述墨水腔分隔为两个墨水容纳腔，所述出墨装置设置在远离所述连通腔的所述墨水容纳腔的底部；以及
第二连通通道，所述第二连通通道设置在所述第二分隔壁和所述壳体的底部之间或设置在所述第二分隔壁的下部中从而连通两个所述墨水容纳腔。
上述第二分隔壁的设置有助于减少墨水对墨水腔的摩擦以及增强墨水腔的强度。
所述出墨装置可以采用任何合适的出墨装置，可以根据与之匹配的打印头 或墨水输出管路进行设计，可以是由弹簧、圆球和橡胶制成的顶开式阀门，或者是由海绵、粘结纤维制成的导墨材料，或者是金属制成的滤网、或者是由高分子材料制成的能传导和过滤墨水的滤膜、或者是一层封住出墨口在墨盒储运过程中防止墨水从出墨口泄漏的薄膜，出墨装置可以用机械方式卡接在墨盒上，也可以用超声波焊接、热焊接或胶水粘接。
为了提高本发明的打印墨盒的防墨水泄漏能力，在本发明的一具体实施例中，所述第一导气通道设置在所述的壳体的顶部中，所述打印墨盒还包括：
第三分隔壁，所述第三分隔壁设置在所述的壳体的内腔中从而和所述第一分隔壁一起将所述的壳体的内腔分隔为所述墨水腔、所述连通腔和导气腔；
第二导气通道，所述第二导气通道设置在所述的壳体的顶部中；
第三导气通道，所述第三导气通道设置在所述的壳体的底部中，所述导气腔通过所述第三导气通道气路连通所述外界大气；以及
第三连通通道，所述第三连通通道设置在所述的壳体的顶部中且连通所述第一导气通道和所述第二导气通道。
所述第二导气通道和所述第三导气通道的构成类似上述的第一导气通道的构成。
所述第三连通通道可以具有任何合适的构成，在本发明的一具体实施例中，所述打印墨盒还包括密封件，所述的壳体的顶部的外表面上设置有连通凹槽，所述密封件密封在所述连通凹槽上从而在所述密封件和所述连通凹槽之间形成所述第三连通通道，所述密封件还密封在所述第一导气通道和所述第二导气通道上。
为了便于墨水腔注墨，在本发明的一具体实施例中，所述打印墨盒还包括注墨口，所述注墨口设置在所述的壳体的顶部中并连通所述外界大气与所述墨水腔。
本发明的有益效果主要在于：
1、本发明的打印墨盒通过第一分隔壁将壳体的内腔分隔成墨水腔和连通腔，墨水腔和连通腔通过第一连通通道连通，然后在连通腔中设置缓冲腔，缓冲腔中设置气液交换装置和缓冲室，通过气液交换装置的毛细通道连通缓冲室和连通腔，壳体上设置第一导气通道并连通外界大气和缓冲室，通过气液交换装置进行气液交换并维持墨水腔内的压力相对稳定，使得即便墨水腔内压力过 大，也不会导致墨水泄露。当处于待机状态的墨盒受热时，这种结构使墨水腔内的空气首先被排出，避免墨水从墨水腔转移至连通腔。
2、本发明的打印墨盒通过第一分隔壁将壳体的内腔分隔成墨水腔和连通腔，墨水腔和连通腔通过第一连通通道连通，然后在连通腔中设置缓冲腔，缓冲腔中设置气液交换装置和缓冲室，通过气液交换装置的毛细通道连通缓冲室和连通腔，壳体上设置第一导气通道并连通外界大气和缓冲室，通过气液交换装置进行气液交换并维持墨水腔内的压力相对稳定，性能稳定，气液交换装置不会因为打印墨盒的摆放位置而易干堵塞。
3、本发明的打印墨盒通过气液交换装置进行气液交换并维持墨水腔内的压力相对稳定，从而使墨盒结构简单，但打印流畅，性能稳定。
4、本发明的打印墨盒结构简单、不使用储墨材料，因此，本发明的打印墨盒墨水容量大、残墨量少，减少浪费并减少环境污染。
本发明的这些和其它目的、特点和优势，通过下述的详细说明，附图和权利要求得以充分体现，并可通过所附权利要求中特地指出的手段、装置和它们的组合得以实现。
附图说明
图1是本发明的打印墨盒的第一具体实施例的内部结构示意图。
图1A是图1所示的第一具体实施例的气液交换装置的主视剖视示意图。
图1B是图1所示的第一具体实施例的包括出墨装置的一部分的主视剖视示意图。
图2是本发明的打印墨盒的第二具体实施例的内部结构示意图。
图2A是图2所示的第二具体实施例的气液交换装置的主视剖视示意图。
图2B是本发明的打印墨盒的气液交换装置的另一具体实施例的主视剖视示意图。
图3是本发明的打印墨盒的第三具体实施例的内部结构示意图。
图3A是图3所示的第三具体实施例的气液交换装置的主视剖视示意图。
图3B是图3所示的第三具体实施例的气液交换装置的俯视示意图。
图4是本发明的打印墨盒的第四具体实施例的内部结构示意图。
图4A是图4所示的第四具体实施例的气液交换装置的侧视剖视示意图。
图4B是本发明的打印墨盒的气液交换装置的又一具体实施例的侧视剖视示意图
图5是本发明的打印墨盒的第五具体实施例的内部结构示意图。
图5A是图5所示的第五具体实施例的气液交换装置的主视剖视示意图。
图5B是图5所示的第五具体实施例的壳体的顶部的俯视示意图。
图5C是图5所示的第五具体实施例的气液交换装置的第一芯体的主视示意图。
图6是本发明的打印墨盒的第六具体实施例的内部结构示意图。
图6A是图6所示的第六具体实施例的气液交换装置的主视剖视示意图。
图6B是图6所示的第六具体实施例的气液交换装置的俯视示意图。
图6C是图6所示的第六具体实施例的壳体的顶部的俯视示意图。
图7是本发明的打印墨盒的第七具体实施例的内部结构示意图。
(符号说明)
1壳体；2出墨装置；21弹簧；22球体；23硅橡胶；24外壳体；25封闭腔；26导墨狭缝；3第一分隔壁；31竖向分隔壁；32横向分隔壁；4第一导气通道；5气液交换装置；51第一芯体；52第二芯体；53通孔；54芯体；55加强筋；56螺旋凹槽；6墨水腔；7缓冲室；8第一连通通道；9缓冲腔；10墨水；11注墨口；12连通腔；13隔断体；14开口；15空隙；16墨水容纳腔；17密封盖；18第二分隔壁；19第二连通通道；33第三分隔壁；34第二导气通道；35第三导气通道；36导气腔；37连通凹槽；38分隔壁；39导气通道；40毛细通道；41注气口；42弹性空心囊体；43穿孔；44迷宫凹槽。
具体实施方式
为了能够更清楚地理解本发明的技术内容，特举以下实施例详细说明。
实施例1
请参阅图1至图1B所示，在本发明的第一具体实施例中，本发明的打印墨盒包括壳体1、出墨装置2、第一分隔壁3、第一导气通道4、气液交换装置5、缓冲室7、第一连通通道8和缓冲腔9，第一分隔壁3设置在壳体1的内腔中从而将壳体1的内腔分隔为墨水腔6和连通腔12，出墨装置2设置在墨水腔6的底部，第一连通通道8设置在第一分隔壁3和壳体1的顶部之间从而连通 墨水腔6和连通腔12，缓冲腔9设置在连通腔12中，缓冲腔9上设置有开口14，开口14通过连通腔12连通第一连通通道8，缓冲室7设置在缓冲腔9中；第一导气通道4设置在壳体1的顶部中并连通外界大气与缓冲室7，气液交换装置5设置在缓冲腔9中，缓冲室7位于气液交换装置5上，气液交换装置5具有毛细通道40，缓冲室7通过毛细通道40连通开口14，从而气液交换装置5阻隔连通腔12中的墨水10流至缓冲室7并通过缓冲室7和第一导气通道4气路连接连通腔12和外界大气从而自动平衡连通腔12中的压力。
具体地，壳体1和缓冲腔9均由聚丙烯塑料制成；第一分隔壁3是竖向分隔壁31，竖向分隔壁31连接壳体1的内壁；第一连通通道8设置在竖向分隔壁31和壳体1的顶部之间；开口14设置在缓冲腔9的下部的侧面，并朝向墨水腔6；缓冲腔9设置在连通腔12的中间，缓冲腔9的外壁和连通腔12的内壁之间的最大距离为1.5毫米；第一导气通道4为导气孔；气液交换装置5具有芯体54，所述芯体54包括第一芯体51和第二芯体52，第二芯体52为带凸筋的聚丙烯塑料圆柱体，其中设置有通孔53，第一芯体51为耐腐蚀不锈钢圆柱体，插接在通孔53中，毛细通道40设置在耐腐蚀不锈钢圆柱体中，具体是在耐腐蚀不锈钢圆柱体中开孔形成，毛细通道40竖向直线设置，为直线形，长度为10毫米，内径为0.2毫米，即毛细通道40的厚度和宽度均为0.2毫米，毛细通道40的横截面为圆形，结构如图1A所示。第二芯体52通过凸筋卡在气液交换装置5的其它部分中，气液交换装置5被安装在缓冲腔9的内壁之间。
本实施例中的墨水10为表面张力0.01-0.073牛/米的液体，例如染料或颜料墨水、打印后能被光固化的液体或溶液、或者生物质溶液等。从导气孔抽真空然后注墨，完成后封闭导气孔，此时连通腔12中的墨水10浸润毛细通道40。出墨装置2如图1B所示，是由弹簧21、球体22和硅橡胶23制成的顶开式阀门。弹簧21、球体22和硅橡胶23均设置在外壳体24中，外壳体24的底部开孔，硅橡胶23设置在外壳体24的靠近开孔的位置，弹簧21分别抵靠外壳体24的顶部和球体22从而将球体22抵靠在硅橡胶23上形成封闭腔25，外壳体24的内壁上设置有导墨狭缝26，连通封闭腔25和墨水腔6。
使用时打开导气孔，把墨盒装入打印机，打印头上导墨管将出墨装置2中的球体22往上顶，当球体22脱离硅橡胶23尤其是球体22中心位置高于导墨狭缝26时，墨水10流经导墨狭缝26进入打印头，墨水腔6内形成比较小的负 压。打印时墨水腔6内压力不断下降，进而连通腔12内的压力也不断下降，连通腔12和缓冲室7之间的压差推动毛细通道40中的墨水10往连通腔12一端移动，直到缓冲室7中的空气进入连通腔12，然后通过第一连通通道8进入墨水腔6。随着进入墨水腔6的空气量增加，墨水腔6内的压力上升，连通腔12与缓冲室7之间的压差减小，直到毛细通道40重新被墨水10浸润而阻止缓冲室7的空气的进一步进入。随着打印进行，上述过程不断重复，直至墨水腔6内的墨水10打完为止。
墨水腔6内的压力稳定在很小的范围内，通常波动不超过一千帕。在某些情况下，如果墨水腔6内的压力升高，连通腔12中的墨水10可经过毛细通道40释放到缓冲室7，由于连通腔12的体积有限，即便连通腔12中的墨水10全部释放到缓冲室7，墨水10也不会经由第一导气通道4而泄露。当墨水腔6内的压力下降时，缓冲室7内的墨水10返回连通腔12。
实施例2
请参阅图2和图2A所示，本发明的第二实施例与实施例1的结构和工作原理相似，差别在于：第一连通通道8设置在竖向分隔壁31的上部中；开口14设置在缓冲腔9的底部且缓冲腔9的底部和连通腔12的底部之间存在空隙15；缓冲腔9的远离第一分隔壁3的一侧是连通腔12的远离第一分隔壁3的一侧的一部分，即共用一侧，缓冲腔9的外壁和连通腔12的内壁之间的最大距离为0.5毫米；气液交换装置5的芯体54为单一件，为带凸筋的尼龙6圆柱体，并且直接在尼龙6圆柱体的中间孔内建立毛细通道40，具体是在尼龙6圆柱体的中间孔的内壁朝内设置凸筋形成。毛细通道40的长度为1毫米，内径为0.5毫米，如图2A所示。实施例2的墨盒制造更方便，成本更低。
根据打印系统对墨水腔6内压力控制要求的不同，毛细通道40的形状、长度、厚度和宽度可以随之调整。根据对墨水10的稳定性要求和墨水10的粘度、表面张力的不同，可以选择不同的高分子材料制造上述气液交换装置5，常用的如尼龙6、尼龙66、尼龙1010、聚对苯二甲酸乙二酯、聚对苯二甲酸丁二酯、聚碳酸酯、聚丙烯、聚苯乙烯、聚甲醛、聚苯醚等、ABS等。第二芯体52通过凸筋卡在气液交换装置5中，或者如图2B所示将第二芯体52和气液交换装置5的其余部分一体成型，一体成型时第二芯体52和气液交换装置5的其余部 分可以是同种或不同种高分子材料。气液交换装置5可以单独成型然后装配在缓冲腔9中，也可以与缓冲腔9一体成型，一体成型时缓冲腔9和气液交换装置5可以是同种或不同种高分子材料。需要指出的是，如果墨水10对某种高分子材料制成的毛细通道40浸润能力不足，可以对制成的毛细通道40进行表面亲水处理，使其容易被墨水10浸润。
实施例3
请参阅图3至图3B所示，本发明的第三实施例与实施例1的结构和工作原理相似，差别在于：第一分隔壁3包括竖向分隔壁31和横向分隔壁32，竖向分隔壁31和横向分隔壁32相互连接且分别连接壳体1的内壁；缓冲腔9的两侧分别是连通腔12的两侧的一部分，即共用两侧，缓冲腔9的外壁和连通腔12的内壁之间的最大距离为0.1毫米；气液交换装置5的芯体54的第一芯体51为直径3毫米的陶瓷圆柱体，第二芯体52与气液交换装置5的其它部分一体成型，为清楚起见，用虚线勾勒第二芯体52的部分轮廓，第二芯体52的通孔53的内壁在相对的两侧各设计了一条环形的缺口，并与插入通孔53的陶瓷圆柱体构成两个毛细通道40，毛细通道40的横截面为环形，毛细通道40的长度为1.5毫米，厚度为0.1毫米，宽度为2.3毫米。陶瓷耐高温，对多种墨水10的稳定性好，不易被腐蚀，如果将墨盒的壳体1用耐高温的塑料或金属制成，可以用于需要较高温度打印的液体。
实施例4
请参阅图4至图4A所示，本发明的第四实施例与实施例1结构及工作原理相似，差别在于：缓冲腔9的三侧分别是连通腔12的三侧的一部分，即共用三侧，缓冲腔9的外壁和连通腔12的内壁之间的最大距离为5毫米；气液交换装置5的芯体54为单一件，形状为长方体，与气液交换装置5的其余部分一体成型，为清楚起见，用虚线勾勒芯体54的轮廓，毛细通道40水平设置在芯体54中，也为长方体，毛细通道40的长度1.5毫米，厚度0.05毫米，宽度48毫米，毛细通道40的横截面为长方形。这种墨盒结构非常简单。为增加毛细通道40的强度，可以在毛细通道40中均匀加入4个宽度为2毫米的加强筋55，变为具有5个并联的宽度为8毫米的毛细通道40，毛细通道40的长度和厚度不 变，如图4B所示；出墨装置2为由海绵或纤维制成的导墨材料；还包括第二分隔壁18和第二连通通道19，第二分隔壁18设置在墨水腔6中从而将墨水腔6分隔为两个墨水容纳腔16，出墨装置2设置在远离连通腔12的墨水容纳腔16的底部，第二连通通道19设置在第二分隔壁18和壳体1的底部之间从而连通两个墨水容纳腔16。
在墨盒制造过程中，首先从外侧用密封盖17密封出墨装置2，然后从导气孔抽真空然后注墨，完成后封闭导气孔。使用时打开导气孔和出墨装置2的密封盖17，将墨盒装入打印机，此时连通腔12中的墨水10浸润毛细通道40，连通腔12以及墨水腔6中的压力处于平衡状态。打印时与出墨装置2连接的墨水容纳腔16中的墨水10首先消耗，相邻的墨水容纳腔16中的墨水10通过两者之间的第二连通通道19补充到与出墨装置2连接的墨水容纳腔16中，相邻的墨水容纳腔16中的压力下降，进而连通腔12内的压力也下降，连通腔12与缓冲室7之间的压力差足够大时，缓冲室7中的空气通过两者之间的气液交换装置5中的毛细通道40进入连通腔12，进而进入相邻的墨水容纳腔16中，相邻的墨水容纳腔16中的压力上升直到毛细通道40重新被连通腔12中的墨水10浸润。该过程反复进行直到相邻的墨水容纳腔16中的墨水10被用光，后面的打印过程和实施例1相似。串联的多个墨水容纳腔16可以增加墨水容量，提高资源利用率。
实施例5
请参阅图5至图5C所示，本发明的第五实施例与实施例1结构及工作原理相似，差别在于：气液交换装置5的芯体54的第二芯体52与气液交换装置5的其它部分一体成型，为清楚起见，用虚线勾勒第二芯体52的部分轮廓，第二芯体52中开通孔53，通孔53的内径为8毫米，气液交换装置5的芯体54的第一芯体51的外侧面刻有螺旋凹槽56，其中第一芯体51的直径10毫米，高度20毫米，螺距2.5毫米，螺旋凹槽56的横截面形状为半圆，半圆的直径为2毫米。第一芯体51插接在通孔53中，螺旋凹槽56抵靠通孔53的内壁，从而在螺旋凹槽56和通孔53之间形成毛细通道40，毛细通道40的横截面为半圆形，毛细通道40的长度为250毫米，厚度为1毫米，宽度为2毫米；缓冲腔9的三侧分别是连通腔12的三侧的一部分，即共用三侧，缓冲腔9的外壁和 连通腔12的内壁之间的最大距离为3毫米；还包括第三分隔壁33、第二导气通道34、第三导气通道35和密封件(图中未示出)，第三分隔壁33设置在壳体1的内腔中从而和第一分隔壁3一起将壳体1的内腔分隔为墨水腔6、连通腔12和导气腔36；第三分隔壁33也可以采用竖向分隔壁31的结构，竖向分隔壁31连接壳体1的内壁，第二导气通道34设置在壳体1的顶部中，第三导气通道35设置在壳体1的底部中，导气腔36通过第三导气通道35气路连通外界大气，壳体1的顶部的外表面上设置有连通凹槽37(见图5B)，密封件密封在连通凹槽37上从而在密封件和连通凹槽37之间形成第三连通通道(图中未示出)，第三连通通道分别连通第一导气通道4和第二导气通道34，密封件还密封在第一导气通道4和第二导气通道34上，在本实施例中，第二导气通道34和第三导气通道35均为导气孔。
在墨盒制造过程中，第一导气通道4抽真空然后注墨，完成后采用密封件封闭第一导气通道4、连通凹槽37和第二导气通道34，并封闭第三导气通道35。使用时打开第三导气通道35，将墨盒装入打印机，此时连通腔12中的墨水10浸润毛细通道40，连通腔12以及墨水腔6中的压力处于平衡状态。打印时墨水腔6中的压力变化和气液交换原理与实施例1相似，只是空气或者缓冲室7内漏墨的进出需要多经过第三连通通道、第二导气通道34、导气腔36和第三导气通道35，进一步增强了打印墨盒的防墨水泄漏能力。
实施例6
请参阅图6至图6C所示，本发明的第六实施例与实施例1的结构及工作原理相似，差别在于：缓冲腔9的三侧分别是连通腔12的三侧的一部分，即共用三侧，缓冲腔9的外壁和连通腔12的内壁之间的最大距离为3毫米；气液交换装置5类似实施例3中的气液交换装置5，但是用直径2毫米的引水芯替代了陶瓷圆柱体，并且有上下两组共四个毛细通道40，本实施例中的引水芯由纤维经胶水或化学方法粘结而成，纤维的成份可以为棉、聚酯、尼龙、聚烯烃、亚克力等。胶水可以为亚克力、聚氨酯等，本实施例中的引水芯也可以由皮芯结构、偏芯结构或并列结构的双组份纤维用热或者化学的方法粘结制成，或者由聚烯烃、聚酯等塑料粉末、金属粉末或陶瓷粉末烧结而成的多孔材料，所述引水芯的孔隙率介于20％和90％之间，毛细通道40的长度为1毫米，厚度为 0.1毫米，宽度为1.5毫米；还包括注墨口11，注墨口11设置在壳体1的顶部中并连通外界大气与墨水腔6；壳体1的顶部的外表面上还设置有曲折的迷宫凹槽44和穿孔43(见图6C)，密封件(例如薄膜焊接)密封在注墨口11、迷宫凹槽44和穿孔43上从而在密封件和注墨口11、迷宫凹槽44以及穿孔43之间形成第一连通通道(图中未示出)，第一连通通道分别连通墨水腔6和连通腔12。
在墨盒制造过程中，从注墨口11注墨至墨水腔6，从第一导气通道4注入适量水至缓冲室7，完成后用薄膜焊接密封注墨口11、迷宫凹槽44和穿孔43，焊接后的注墨口11、迷宫凹槽44和穿孔43共同形成曲折的迷宫结构的第一连通通道。使用时打开导气孔，将墨盒装入打印机。打印时墨水腔6中的压力变化和气液交换原理与实施例1相似，采用曲折的迷宫结构的第一连通通道使液体在墨水腔和连通腔之间的流动变的困难，但不妨碍气体自由流动。
实施例7
请参阅图7所示，本发明的第七实施例与实施例2的结构及工作原理相似，差别在于：还包括隔断体13，隔断体13从缓冲腔9的底部朝向连通腔12的底部延伸从而空隙15通过隔断体13和连通腔12的底部之间的间隙与连通腔12的其余部分连通；还包括注气口41和弹性空心囊体42，注气口41设置在壳体1(具体是壳体1的顶部)上，弹性空心囊体42设置在墨水腔6中并连通注气口41从而通过注气口41连通外界大气，使用时打印机上的注气装置连接注气口41。
在需要使墨水腔6内形成负压时，通过往注气口41吹气，气体进入弹性空心囊体42，弹性空心囊体42膨胀变大，挤压墨水腔6内空气，墨水腔6内压力变大，墨水腔内的空气经第一连通通道从连通腔12经毛细通道40释放到缓冲室7，并经由第一导气通道4释放到外界大气，然后停止往注气口41吹气，弹性空心囊体42弹性收缩恢复原状将进入其中的气体挤出，墨水腔6内空气体积增大，压力变小，形成负压。另外，如果将打印墨盒倒置，因为隔断体13的存在，会将连通腔6的墨水的一部分保持在气液交换装置5周围，气液交换装置5始终被墨水10浸没，不会易干堵塞。需要清洗打印头时，往弹性空心囊体42中快速充气，弹性空心囊体42迅速胀大，液体或气体由于毛细通道40 的限制，从连通腔12排出到缓冲室7的速度较慢，因此在墨水腔6中形成较高压力，墨水腔6中的压力经墨水传导给打印头并将墨水从打印头快速喷出，达到清洗打印头的目的。随后弹性空心囊体42收缩，并在墨水腔6中形成负压。
需要指出的是，虽然在本发明的具体实施例中对各部件的具体结构和形状做了举例，但不是限定，它们还可以采用其它的具体结构和形状，例如图1B中的毛细通道40可以相对于目前的竖向直线形倾斜设置，成为斜线形；毛细通道40的形状、横截面、长度、厚度、宽度等可以根据需要作出改变。
因此，本发明提供了一种打印墨盒，利用气液交换装置进行气液交换并维持墨盒内相对稳定的压力，打印流畅、墨水容量大，通过第一分隔壁的设置，使得即便墨水腔内压力过大，泄露到缓冲室的墨水也非常有限，不会导致墨水泄露，而且使得气液交换装置不会因为打印墨盒的摆放位置而易干堵塞。所述打印墨盒结构简单、性能稳定、容易制造，并且可以把打印液体几乎全部用完，减少残墨造成的浪费和环境污染。本发明的优点具体在于：
1、本发明的打印墨盒结构简单，设计独特巧妙，通过气液交换装置控制墨水腔中的压力稳定，并进行气液交换，打印流畅、墨水容量大。
2、本发明的打印墨盒结构简单，设计独特巧妙，通过设置第一分隔壁，使得即便墨水腔内压力过大，泄露缓冲室的墨水也非常有限，不会导致墨水泄露，并且使得气液交换装置不会因为打印墨盒的摆放位置而易干堵塞。
3、本发明的打印墨盒无须使用储墨材料、残墨量极少，减少了因残墨造成的墨水浪费和环境污染。
4、本发明的打印墨盒墨水容量大，可以设计多个墨水腔或外接连续供墨系统，大大提高了资源利用率。
5、本发明的打印墨盒可以根据需要灵活采用各类不同的出墨装置，适用于各类不同打印头和打印系统。
本发明的打印墨盒以液体为打印介质，这种墨盒可以用于一般的喷墨打印系统，也可以用于3D打印系统。
本领域的技术人员应理解，上述描述及附图中所示的本发明的实施例只作为举例而并不限制本发明。
由此可见，本发明的目的已经完整并有效的予以实现。本发明的功能及结 构原理已在实施例中予以展示和说明，在不背离所述原理下，实施方式可作任意修改。所以，本发明包括了基于权利要求精神及权利要求范围的所有变形实施方式。

Claims (13)

  1. 一种打印墨盒，包括壳体和出墨装置，所述壳体的内腔中设置有墨水腔，所述出墨装置设置在所述墨水腔的底部，其特征在于，所述打印墨盒还包括：
    第一分隔壁，所述第一分隔壁设置在所述的壳体的内腔中从而将所述的壳体的内腔分隔为所述墨水腔和连通腔；
    第一连通通道，所述第一连通通道设置在所述第一分隔壁和所述壳体的顶部之间、或设置在所述壳体的顶部、或设置在所述第一分隔壁的上部中从而连通所述墨水腔和所述连通腔；
    缓冲腔，所述缓冲腔设置在所述连通腔中，所述缓冲腔上设置有开口，所述开口通过所述连通腔连通所述第一连通通道；
    缓冲室，所述缓冲室设置在所述缓冲腔中；
    第一导气通道，所述第一导气通道设置在所述壳体中并连通外界大气与所述缓冲室；以及
    气液交换装置，所述气液交换装置设置在所述缓冲腔中，所述缓冲室位于所述气液交换装置上，所述气液交换装置具有毛细通道，所述缓冲室通过所述毛细通道连通所述开口。
  2. 如权利要求1所述的打印墨盒，其特征在于，所述第一连通通道为通孔、管状结构或曲折的迷宫结构。
  3. 如权利要求1所述的打印墨盒，其特征在于，所述毛细通道的内壁由选自金属、陶瓷、天然高分子材料、合成高分子材料和多孔材料中的至少一种制成。
  4. 如权利要求1所述的打印墨盒，其特征在于，所述毛细通道的长度为0.05毫米至250毫米，或0.5毫米至15毫米。
  5. 如权利要求1所述的打印墨盒，其特征在于，所述毛细通道的厚度为所述毛细通道的最小横截面的最大内切圆的直径，所述厚度为0.03毫米至1毫米，或0.05毫米至0.5毫米。
  6. 如权利要求1所述的打印墨盒，其特征在于，所述毛细通道的宽度为所述毛细通道的最小横截面的最远的两点间的距离，所述距离为0.03毫米至50毫米，或0.05毫米至15毫米。
  7. 如权利要求1所述的打印墨盒，其特征在于，所述气液交换装置还具有芯体，所述毛细通道设置在所述芯体中。
  8. 如权利要求7所述的打印墨盒，其特征在于，所述芯体包括第一芯体和第二芯体，所述第二芯体中设置有通孔，所述第一芯体插接在所述通孔中，所述毛细通道设置在所述通孔和所述第一芯体之间或在所述第一芯体中。
  9. 如权利要求1所述的打印墨盒，其特征在于，所述毛细通道的数目为多个，多个所述毛细通道串联和/或并联。
  10. 如权利要求1所述的打印墨盒，其特征在于，所述的缓冲腔的外壁和所述的连通腔的内壁之间的最大距离为0.1毫米-5毫米。
  11. 如权利要求1所述的打印墨盒，其特征在于，所述开口设置在所述缓冲腔的下部的侧面；或者，所述开口设置在所述缓冲腔的底部且所述的缓冲腔的底部和所述连通腔的底部之间存在空隙。
  12. 如权利要求1所述的打印墨盒，其特征在于，所述打印墨盒还包括注气口和弹性空心囊体，所述注气口设置在所述壳体上，所述弹性空心囊体设置在所述墨水腔中并连通所述注气口从而通过所述注气口连通所述外界大气。
  13. 如权利要求1所述的打印墨盒，其特征在于，所述第一导气通道设置在所述的壳体的顶部中，所述打印墨盒还包括：
    第三分隔壁，所述第三分隔壁设置在所述的壳体的内腔中从而和所述第一分隔壁一起将所述的壳体的内腔分隔为所述墨水腔、所述连通腔和导气腔；
    第二导气通道，所述第二导气通道设置在所述的壳体的顶部中；
    第三导气通道，所述第三导气通道设置在所述的壳体的底部中，所述导气腔通过所述第三导气通道气路连通所述外界大气；以及
    第三连通通道，所述第三连通通道设置在所述的壳体的顶部中连通所述第一导气通道和所述第二导气通道。
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