One-way valve assembly and ink box
A technology of one-way valves and components, applied in the direction of control valves, valve devices, functional valve types, etc., can solve problems such as pressure increase, printing defects, damaged print heads, ink ejection, etc.
Pending Publication Date: 2019-05-31
E JET TECH CO LTD
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Problems solved by technology
[0004] It has been verified that the above structure can achieve a good seal on the ink outlet. However, when the ink cartridge is bumped during transportation and the ink cartridge is turned upside down, or the end user accidentally turns the ink cartridge upside down, the ink in the ink outlet chamber will flow back to the ink outlet. Storage chamber, when the ink suction needle in the printer sucks ink, it will suck out the air in the ink outlet chamber, causing printing defects to damage the print head
[0005] At the same time, because the ink outlet will bear the pressure of all the ink in the ink cartridge, when the amount of ink in the ink storage chamber decreases and the air volume increases, once the external temperature rises or the pressure decreases, the ink outlet will bear the pressure from the ink storage chamber and the air volume. The external pressure difference will increase, causing the problem of ink ejection from the ink outlet when the ink cartridge is inserted into the printer
Method used
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[0022] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. As mentioned above, the one-way valve assembly of the present invention can be used to control the flow of liquid, especially in devices that need to exchange liquids. The ink cartridges used in inkjet printers are used as an example for description below.
[0023] figure 1 It is a perspective view of the ink cartridge involved in the present invention; figure 2 It is a perspective view of the ink cartridge according to the present invention with a part cut away and the ink cavity exposed; image 3 It is an exploded schematic view of the one-way valve assembly in the ink cartridge involved in the present invention.
[0024] The ink cartridge (liquid cartridge) C includes an ink storage chamber (liquid storage chamber) 10 surrounded by the housing 1, an ink outlet (liquid outlet) 2 arranged on the housing 1, and an ink outlet (liquid outlet) installed ...
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The invention relates to a one-way valve assembly and an ink box with the one-way valve assembly. The ink box comprises an ink storage cavity enclosed by a shell, an ink outlet formed in the shell, aseal ring arranged on the ink outlet, an ink outlet cavity communicating with the ink outlet, and the one-way valve assembly arranged in the ink outlet cavity, wherein the ink outlet cavity communicates with the ink storage cavity through a communication port. The one-way valve assembly comprises a first seal piece, a second seal piece and an elastic piece located between the first seal piece andthe second seal piece, wherein the first seal piece can move between a communication port opening position and a communication port sealing position; the second seal piece is matched with the seal ring so as to seal the ink outlet; and the elastic piece is used for applying a forced push force to the first seal piece so as to force the first seal piece to back to the communication port sealing position, so that even if the ink box is inverted, ink in the ink outlet cavity cannot inversely flow to the ink storage cavity, and an ink absorbing needle cannot suck air.
Description
technical field [0001] The invention relates to a one-way valve assembly for controlling liquid circulation and an ink cartridge for an inkjet printer with the one-way valve assembly. Background technique [0002] In daily life, the ink cartridge used in inkjet printers is a common liquid exchange device, and its basic working process is to use the ink suction needle provided in the inkjet printer to insert into the ink outlet of the ink cartridge to suck the ink contained in the ink storage chamber , When the ink in the ink cartridge is reduced, the air enters the inside of the ink cartridge through the air inlet under the action of atmospheric pressure to balance the pressure inside and outside the ink cartridge. [0003] When the ink cartridge is not in use or when the ink cartridge is not installed in the inkjet printer, the ink outlet of the ink cartridge needs to be sealed to prevent the ink from flowing out of the ink outlet. Chinese patent CN2544940Y discloses a stru...
Claims
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IPC IPC(8): B41J2/175F16K15/04
Inventor 赵升魁林东明
Owner E JET TECH CO LTD