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Elastic negative pressure adjusting base for ink cartridge

A technology of ink cartridges and adjusting seats, applied in printing and other directions, can solve problems affecting product printing and quality, changes in metal valve seat and valve magnetic force, and inability to accurately control the negative pressure setting range, etc.

Inactive Publication Date: 2003-03-12
NANODYNAMICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This kind of ink cartridge structure that uses a magnetic valve to control the air supply channel is far simpler than the invention of Dean et al., but in case this product is inadvertently close to a strong magnetic field during transportation, the metal valve seat and the valve The magnetic force of the
As a result, the setting range of the negative pressure cannot be accurately controlled, which will affect the printing and quality of the product

Method used

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  • Elastic negative pressure adjusting base for ink cartridge
  • Elastic negative pressure adjusting base for ink cartridge
  • Elastic negative pressure adjusting base for ink cartridge

Examples

Experimental program
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Effect test

no. 1 example

[0030] As shown in FIG. 2 , according to a specific embodiment of the present invention, a vent hole 12 is provided on the ink cartridge 10 , and an elastic seat 11 is fixed inside the ink cartridge 10 . The elastic seat 11 can be made of a metal reed or a material with stretching elasticity, and an airtight "O" ring 13 is connected at the center thereof. The elastic base body 11 generates a pressing force, so that the airtight "O" ring 13 seals around the air hole 12 to achieve an airtight effect. At this time, the atmospheric pressure acts on the elastic seat 11 in the middle area of ​​the airtight "O" ring 13. When the ink cartridge 10 gradually consumes ink during inkjet printing, the negative pressure gradually increases due to the decrease of the ink level. Finally, the force of the atmospheric pressure on the elastic seat 11 and the force of the elastic seat 11 against the airtight "O" ring 13 will reach a balance state. The balance point is usually set at the critical...

no. 2 example

[0033] As shown in FIG. 4 , according to a specific embodiment of the present invention, a vent hole 12 can be provided on the ink cartridge 10 , and an elastic seat 11 is fixed inside the ink cartridge 10 . The elastic base body 11 can be made of a metal reed or a stretchable elastic material, and a conical or egg-shaped airtight material 15 is connected at the center thereof. The elastic seat 11 generates a pressing force, so that the conical or egg-shaped airtight material 15 blocks the air hole 12 to achieve an airtight effect. At this time, the atmospheric pressure acts on the cone-shaped or egg-head-shaped airtight material 15. When the ink cartridge 10 gradually consumes ink in inkjet printing, the negative pressure will gradually increase due to the decrease of the ink level, and finally the atmospheric pressure will affect the cone. The active force of the shape or the egg head-shaped airtight material 15 and the pressing force of the elastic seat body 11 reach a stat...

no. 3 example

[0037] Ideally, the structure of the negative pressure regulating seat of the first embodiment can be further modified as shown in FIG. 6 . An air bag 40 is added to the structure of the aforementioned first embodiment.

[0038] As shown in Figure 7, when the negative pressure continues to increase and the atmospheric pressure exceeds the pressing force of the elastic seat 11, the airtight "O" ring 13 is pushed away, allowing a small amount of air to pass through the air holes on the elastic seat 11 14 enters the air bag 40, which expands to occupy the air volume space in the cartridge and fill the volume space previously occupied by the depleted ink 30. Since the air does not directly enter the ink cartridge and mix with the original air, the original air quality remains unchanged. When its volume shrinks, the pressure in the ink cartridge will rise, causing its negative pressure value to return to Within the established operable negative pressure range. Because the negativ...

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Abstract

An elastic negative pressure regulator of ink cartridge is characterized by that said ink artridge has a air hole with a elastic body in which there is an air-tight element to close the air hole. The continuous consumption of ink can generate an incremental negative pressure in the cartridge. Whe negative pressure reaches a certain value, the air-tight element is pushed by atmospheric pressure to open the air hole and a little air comes in the cartridge to return the negative pressure in normal range and close the air hole.

Description

technical field [0001] The invention relates to a negative pressure leak-proof device, which can be applied to the inside of the ink cartridge of an inkjet printer; in particular, it relates to an elastic negative pressure regulating seat of the ink cartridge, and the leak-proof device can utilize the elastic negative pressure regulating seat itself The elastic force controls the air intake channel from the outside air to the ink cartridge, so that the negative pressure in the cartridge is kept constant within a negative pressure range that is operable and prevents ink from seeping out of the inkjet print head. Background technique [0002] Inkjet printers are already a fairly reliable and efficient printing tool. Typically, an inkjet printer has an inkjet printhead that traverses relative to a printing surface and ejects ink droplets. A control system moves the inkjet printing head to an appropriate position and then makes it eject ink droplets, and the ink droplets fall o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175
Inventor 周景瑜陈文忠
Owner NANODYNAMICS INC
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