WO2004022347A1 - Dispositif d'alimentation en continu en encre d'une imprimante a jet d'encre - Google Patents

Dispositif d'alimentation en continu en encre d'une imprimante a jet d'encre Download PDF

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Publication number
WO2004022347A1
WO2004022347A1 PCT/CN2003/000682 CN0300682W WO2004022347A1 WO 2004022347 A1 WO2004022347 A1 WO 2004022347A1 CN 0300682 W CN0300682 W CN 0300682W WO 2004022347 A1 WO2004022347 A1 WO 2004022347A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
print head
valve
supply device
inkjet printer
Prior art date
Application number
PCT/CN2003/000682
Other languages
English (en)
Chinese (zh)
Inventor
Qingguo Xiao
Original Assignee
Print-Rite.Unicorn Image Products Co.Ltd., Of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Print-Rite.Unicorn Image Products Co.Ltd., Of Zhuhai filed Critical Print-Rite.Unicorn Image Products Co.Ltd., Of Zhuhai
Priority to AU2003255119A priority Critical patent/AU2003255119A1/en
Publication of WO2004022347A1 publication Critical patent/WO2004022347A1/fr

Links

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
    • B41J2/17506—Refilling of the cartridge
    • B41J2/17509—Whilst mounted in the printer

Definitions

  • the present invention relates to an ink supply device used in conjunction with an inkjet printer, and more particularly to an ink supply device that continuously supplies a large amount of ink. Background technique
  • inkjet printers often have a print head with a cartridge, and a limited-capacity ink cartridge is detachably installed in the cartridge to supply ink to the print head. Since the ink capacity of each ink cartridge can usually only print 50-100 standard pages, the ink cartridge needs to be replaced frequently, which brings great inconvenience to printer users.
  • the above continuous ink supply device found a problem in use.
  • the maximum liquid level of the ink tank can only be equal to or slightly less than the position of the nozzle of the print head. When the maximum liquid level of the ink tank is higher than the nozzle of the print head, it cannot print normally. Increased pressure at the print head will cause ink leakage from the print head to contaminate the printer and the print media shield. When the minimum liquid level in the ink tank is lower than the print head too much, it will not be able to suck ink due to insufficient print head suction. print. Therefore, this ink supply device is subject to the following restrictions: the height at the nozzle of the print head is relatively zero and is positive upwards and negative downwards, that is, the following conditions must be met at the same time in Figure 1:
  • H is the height of the water column and S is the maximum suction value of the print head.
  • the continuous ink supply operation principle of a wide-line inkjet printer includes a pump 5 and a sensing device.
  • the pump 5 starts to supply ink from the ink storage tank 3 to the relay container 4.
  • the pump 5 stops working and cuts off the channel between the ink storage tank and the relay container 4, so that it works repeatedly.
  • this ink supply device is relatively complicated and the manufacturing cost is too high.
  • the purpose of the present invention is to design a continuous ink supply device, which can be designed according to different needs so that the ink tank can be placed at any height position above the print head.
  • Another object of the present invention is to design a continuous ink supply device with a simple structure and low cost.
  • the present invention still uses an ink tank, which has a large ink tank and is away from the container of the print head.
  • the term “distance” means that the ink tank does not move with the print head during the printing process.
  • the ink tank is stationary relative to the workbench or printer housing.
  • the ink tank can be placed on the workbench or designed as a container integrated with the printer housing.
  • a support for the ink tank can also be designed inside or outside the printer housing.
  • the ink tank rests on a support.
  • the device also has an air channel that communicates with the atmosphere.
  • This air channel is a hole in the bottle-shaped ink reservoir, or the opening of an open container-like ink reservoir.
  • the device includes a conduit, which is a flexible ink delivery channel that connects the ink reservoir and the print head.
  • a one-way pressure on-off valve in the ink channel from the ink reservoir to the print head. This valve is selectively opened and closed to make the ink in the ink reservoir flow to the print head unidirectionally, that is, it can be set at the outlet of the ink reservoir. It can also be set in the duct or near the print head, and it will open only when the pressure of the valve near the print head is lower than the pressure near the ink tank.
  • the opening pressure threshold is a pressure value that can be selected as the height difference between the highest point of the ink reservoir and the print head. Obviously, when the sensitivity of the valve is low, That is, when the threshold tolerance is large, the height tolerance value of the ink tank can be increased accordingly. As long as the sum of the tolerance and the height of the ink tank is within the maximum suction value of the print head, normal ink supply can be ensured.
  • a one-way pressure protection valve can also be set in the device, which is connected in parallel with the one-way pressure on-off valve.
  • the conduit can also be communicated with the printhead through an ink cartridge matched with the printhead cartridge compartment, and the valve is installed in the ink supply port of the ink cartridge.
  • ink tanks For color printers, three or more sets of ink tanks, ducts, ink cartridges, and valves can be used.
  • the sets are independent and contain different colors of ink.
  • FIG. 1 is a working principle diagram of a continuous ink supply device of a conventional desktop inkjet printer
  • FIG. 2 is a working principle diagram of a continuous ink supply device of an inkjet printer according to the inventive concept;
  • FIG. 3 is a structural diagram of an ink cartridge in which a one-way pressure on-off valve is installed in the ink cartridge;
  • FIG. 4 is a structural diagram of an ink cartridge in which a parallel one-way pressure on-off valve and a one-way pressure protection valve are installed in an ink cartridge;
  • FIG. 6 is a schematic diagram of an ink supply state of a valve assembly;
  • Figure 7 is a schematic diagram of the backflow protection state of the valve assembly
  • FIG. 8 is a working principle diagram of a continuous ink supply device of a conventional wide-line inkjet printer
  • FIG. 9 is a working principle diagram of a continuous ink supply device of a wide-line inkjet printer according to the inventive concept;
  • FIG. 10 is a partially enlarged structural diagram of FIG. 9. detailed description .
  • this embodiment takes a monochrome continuous ink supply device as an example.
  • FIG. 2 for a structure related to the present invention but not belonging to the present invention, it is indicated by a two-dot chain line in the figure.
  • the printer 1 has a slide bar 11 fixed by a bracket, and a print head with a cassette 10 can be driven by a motor.
  • the printing medium 8 is located under the print head, the ink tank 3 having a larger volume according to the present invention is fixed on the printer 1 housing through a bracket 7, and there is an air channel 6 on the top,
  • the ink cartridge 4 with a smaller volume cooperates with the cartridge compartment 10, that is, the ink supply port 9 of the ink cartridge 4 is tightly connected with the ink supply needle of the print head.
  • the duct 2 communicates with the ink reservoir 3 and the ink supply needle through the ink cartridge 4.
  • the one-way pressure on-off valve or valve assembly can be installed at the connection portion 5 of the ink reservoir 3 and the duct 2 or in the ink supply port 9 of the ink cartridge 4. This example is installed in the ink supply port 9 of the ink cartridge 4.
  • the ink cartridge 4 has a sealed ink cavity, the cavity has a conduit connection hole 12, an ink supply port has a built-in seal ring 13 which can be closely fitted with the ink supply needle, and a ink ring is provided near the ink supply port.
  • the gland 15 and the valve core 14 made of elastic rubber have a through hole 16 in the gland 15.
  • Unidirectional pressure opening and closing by gland I 5 is composed of the valve core 14 and its working principle is as follows. The head of the valve core 14 is pressed against the lower surface of the gland 15 by the elastic force of the material itself. This pressure value is the threshold value of the valve. When it is used up for printing, the pressure is negative relative to its upper part.
  • the head will leave the lower surface of the gland 15 under the pressure of the pressure difference.
  • the ink from the ink reservoir can be replenished.
  • the pressure difference Disappears, the one-way pressure on-off valve returns to the closed state.
  • the pressure difference force K at which it is opened and the relative sizes H3, H4 of the ink reservoir and the print head in FIG. 2 and the maximum suction force S of the print head satisfy the following relationship :
  • the device will work normally. Therefore, the installation size of the ink tank can be determined for different models of inkjet printers, and the threshold of the spool can be designed accordingly.
  • This example is different from the first example in that it takes into account the instantaneous impact pressure generated when the ink cartridge is installed in the cartridge compartment, which can cause permanent damage to the print head. To this end, a unidirectional pressure protection is added, and the process is also considered The two valves are made into components to improve the yield of the product.
  • the configuration of the continuous ink supply device is the same as that in Figure 2.
  • the structure of the ink cartridge is as follows:
  • valve components are used as valve components.
  • the pressure cover 15 and the valve seat 17 are used.
  • the valve assembly can be installed at the connection between the ink tank and the duct, or in the middle of the duct. It can also be installed at the ink supply port of the ink cartridge as in this example. Its structure is shown in Figure 5.
  • the valve seat 17 and the gland 15 are fixed to each other. And the skirt of the valve core 14 is pressed once, and the head of the valve core 14 is tightly pressed on the lower plane of the gland 15 by the elastic force of the material itself.
  • a blind tube 18 made of an elastic material is fixed, and the tube wall of the blind tube 18 has a slit-like hole 20 penetrating the tube wall.
  • this example is an example of the present invention applied to a wide-line inkjet printer.
  • This is a four-color color wide-line inkjet printer. Since the wide-line inkjet printer has a larger frame 1, it is more suitable.
  • the ink tank 4 is placed on the rack 1. Each ink tank 4 communicates with the print head 9 through its own duct 1.
  • this example also uses The valve assembly with a one-way pressure protection valve, the valve assembly 21 is connected in series in the conduit 2, the structure of the valve assembly 21 can be seen in FIG. 10, and FIG. 10 is a partial enlarged view of FIG.
  • the present invention can freely adjust the height of the ink tank within a certain range. According to different printer types, the position where the ink tank can be fixed can be determined, and it is easy to obtain the ink tank full and almost empty limit states to the print head. Two height differences, as long as the threshold value of the one-way pressure on-off valve is properly selected. At the same time, the structure of the continuous ink supply device of this inkjet printer is relatively simple.

Landscapes

  • Ink Jet (AREA)

Abstract

L'invention concerne un dispositif qui permet d'alimenter en continu en encre une imprimante à jet d'encre, et plus particulièrement, un dispositif qui permet d'alimenter une imprimante à jet d'encre en encre à la fois en continu et en quantité. Ce dispositif comprend un réservoir d'encre, un tuyau conducteur ainsi qu'une soupape de sûreté unidirectionnelle. En sélectionnant une valeur appropriée d'ouverture et de fermeture de la soupape, on peut maintenir le niveau du réservoir d'encre dans une plage prédéterminée. De plus, le réservoir s'adapte aux différentes exigences de conception et peut ainsi se placer à n'importe quelle hauteur au-dessus de la tête d'impression. Par ailleurs, ce dispositif présente les avantages suivants : structure simple, coût de fabrication réduit, et plus particulièrement, possibilité de couplage à une imprimante à jet d'encre grand format.
PCT/CN2003/000682 2002-09-06 2003-08-14 Dispositif d'alimentation en continu en encre d'une imprimante a jet d'encre WO2004022347A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003255119A AU2003255119A1 (en) 2002-09-06 2003-08-14 A device used for continuously supplying ink to an ink-jet printer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN02128475.X 2002-09-06
CN 02128475 CN1208197C (zh) 2002-09-06 2002-09-06 喷墨打印机连续供墨装置

Publications (1)

Publication Number Publication Date
WO2004022347A1 true WO2004022347A1 (fr) 2004-03-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2003/000682 WO2004022347A1 (fr) 2002-09-06 2003-08-14 Dispositif d'alimentation en continu en encre d'une imprimante a jet d'encre

Country Status (3)

Country Link
CN (1) CN1208197C (fr)
AU (1) AU2003255119A1 (fr)
WO (1) WO2004022347A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101279539B (zh) * 2007-04-05 2011-04-06 研能科技股份有限公司 适用于连续供墨系统的打印墨匣承载架
CN101797837B (zh) * 2010-03-09 2012-06-27 北京中科纳新印刷技术有限公司 大幅面平板打印设备及打印方法
CN103963474B (zh) * 2014-05-21 2016-03-02 深圳市巨鼎医疗设备有限公司 一种多级多设供墨系统
CN109367007B (zh) * 2018-11-22 2024-02-09 浙江闪铸三维科技有限公司 一种增材制造设备供墨系统
JP2023007712A (ja) * 2021-07-02 2023-01-19 セイコーエプソン株式会社 カートリッジ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0316737A (ja) * 1989-06-15 1991-01-24 Nec Corp インクジェットプリンタのインク供給機構
JPH07214790A (ja) * 1994-02-07 1995-08-15 Fuji Electric Co Ltd 補給用インク袋付き記録ヘッドのインク充填装置
EP1033252A2 (fr) * 1999-03-01 2000-09-06 Mutoh Industries Ltd. Imprimante à jet d'encre et méthode pour son opération
CN1309022A (zh) * 2000-02-15 2001-08-22 珠海飞马耗材有限公司 墨盒
CN1354089A (zh) * 2000-11-18 2002-06-19 珠海飞马耗材有限公司 喷墨记录设备用墨盒的灌墨方法和装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0316737A (ja) * 1989-06-15 1991-01-24 Nec Corp インクジェットプリンタのインク供給機構
JPH07214790A (ja) * 1994-02-07 1995-08-15 Fuji Electric Co Ltd 補給用インク袋付き記録ヘッドのインク充填装置
EP1033252A2 (fr) * 1999-03-01 2000-09-06 Mutoh Industries Ltd. Imprimante à jet d'encre et méthode pour son opération
CN1309022A (zh) * 2000-02-15 2001-08-22 珠海飞马耗材有限公司 墨盒
CN1354089A (zh) * 2000-11-18 2002-06-19 珠海飞马耗材有限公司 喷墨记录设备用墨盒的灌墨方法和装置

Also Published As

Publication number Publication date
CN1208197C (zh) 2005-06-29
CN1480334A (zh) 2004-03-10
AU2003255119A1 (en) 2004-03-29

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