WO2006131038A1 - An ink cartridge - Google Patents

Abstract

The invention relates to an ink cartridge that comprises a liquid chamber and a pressure adjusting mechanism. The chamber is in a state of negative pressure. The pressure adjusting mechanism has a valve membrane surface to control the negative pressure of chamber, and includes a spring; a front valve body or an ink chamber; a valve membrane; a rear valve body or a dome; an air vent; and an air groove. There’s a spring between the valve membrane and the front valve body, a air groove on the rear valve body, and a notch with a lug at the center of the air groove. A circular aperture with a flange on the valve membrane is pressed into the notch on the rear valve body by the spring. The pressure adjusting mechanism is provided inside the ink chamber or on a cover, and the cover or the ink chamber has an air vent communicating with atmosphere. A seal ring is formed at the outlet of the chamber, a seal ball on the inside track of the seal ring is pressed against the seal ring by a spring. The cover or the ink chamber communicating with atmosphere is a long channel with a leakage-protecting element.

Description

 A universal printer cartridge

 The invention relates to a universal printer cartridge

Background technique

 At present, the ink cartridge of the desktop printer mainly uses a sponge to store ink or no sponge to control the ink through the ink outlet valve to ensure that the ink does not overflow from the nozzle hole of the print head under natural conditions.

 These two types of ink cartridges have the following disadvantages:

 1. The sponge cartridge has the function of capillary storage of ink and sponge to control printing. It is a patent enjoyed by EPSON, but there are too many inks left on the sponge, causing certain waste and environmental protection.

 2. The non-sponge ink cartridge passes through the one-way valve on the ink channel, so that during the printing process, the ink outlet port forms a certain negative pressure to ensure printing. This is also a patent of EPSON. Due to the height of the check valve setting and the ink channel design, more ink will remain.

3, there are sponges will increase the cost, the valve structure to achieve its process is difficult.

Content of the present invention

 SUMMARY OF THE INVENTION An object of the present invention is to provide a printer cartridge which is simple, versatile, and stably supplied with ink. It is used in small (desktop) ink cartridges that are currently available on the market with sponges and no sponges.

 The above object of the present invention is achieved by the following technical solutions:

 A universal printer cartridge includes an ink storage chamber and a pressure adjusting mechanism, wherein the ink storage chamber is an ink storage chamber in a negative pressure state.

I According to the present invention, the pressure adjusting mechanism has a valve film plane that stably controls the negative pressure. According to the present invention, the pressure adjusting mechanism includes a spring, a front valve body or an ink storage chamber, a valve film, a rear valve body or a dome, a vent hole, an air groove, a spring between the valve film and the front valve body, and a rear valve body There is an air groove in the upper part, and a convex concave hole is arranged in the middle of the bottom surface of the groove, and a small round hole with a convex edge is opened on the valve film, and the circular hole is placed in the concave hole of the rear valve body by the spring. According to the invention, the pressure adjusting mechanism is disposed in the ink storage chamber or on the surface cover, and the surface cover or the ink storage chamber has a vent hole communicating with the atmosphere. According to the invention, a sealing ring is arranged at the ink outlet of the ink storage chamber, and a sealing ball is arranged at the inner ring of the sealing ring, and the sealing ball is placed by a spring outside the inner ring of the sealing ring, the cover or The ink storage chamber and the atmosphere through hole are a relatively long passage, and an anti-leakage mechanism is disposed in the passage. The ink inlet port to the ink outlet port is disposed at the lowest end of the ink cartridge, and the ink is separated from the air layer by layer in the process of flowing toward the ink outlet port, so that the air does not flow to the ink outlet before the printing is completed. The invention has the following advantages:

1. The invention can ensure that the entire ink storage chamber is in a relatively constant negative pressure state, so as to control the printing process more stably.

2. The flat surface area of the valve film located in the pressure adjusting mechanism can control the negative pressure more stably, and the ink can be continuously and stably flowed to the printing head to a greater extent.

3. No need for porous materials, which will increase the volume of the ink reservoir and reduce residual ink.

4. The ink outlet of the ink storage chamber or the ventilation passage increasing mechanism fundamentally solves the problem of ink leakage. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of a pressure regulating valve selected in the present invention.

2 is a schematic structural view of an ink outlet prevention and leakage mechanism selected by the present invention. 3 is a schematic structural view of a venting groove leakage prevention mechanism selected in the present invention.

detailed description

The present invention is described in detail below in conjunction with specific embodiments.

 As shown in Fig. 2, Fig. 2, Fig. 3: The invention comprises an ink storage chamber and a pressure adjusting mechanism, and the pressure adjusting mechanism comprises a spring 5, a front valve body (or an ink storage chamber), a rear valve body (or a dome). The vent hole 2, the air groove 3, the pressure adjusting mechanism is disposed in the ink storage chamber or the surface cover, a spring 5 is arranged between the valve film 5 and the front valve body 1, and an air groove 3 is opened in the rear valve body 6, the bottom surface of the groove The central portion is provided with a convex recessed hole, and the valve membrane 5 is provided with a small round hole with a convex edge which is spring-loaded in the concave hole of the rear valve body 6, and the pressure adjusting mechanism is installed in the ink storage chamber or On the cover, the cover or the ink storage chamber has a vent 2 that communicates with the atmosphere.

 On the other hand, a sealing ring 1 is provided at the ink outlet of the ink reservoir, and a sealing ball 2 is disposed at the inner ring of the sealing ring 1. The sealing ball 2 is placed by a spring 3 outside the inner circumference of the sealing ring 1. The cover or the ink reservoir and the atmosphere through hole are a relatively long passage, and an anti-leakage mechanism is provided in the passage.

Claims

A general-purpose printer ink cartridge comprising an ink storage chamber and a pressure adjusting mechanism, wherein the ink storage chamber is an ink storage chamber in a negative pressure state. 2. A universal printer cartridge according to claim 1 wherein: said pressure adjustment  The mechanism has a valve membrane plane that stably controls the negative pressure. 3. A universal printer cartridge according to claim 1, wherein said pressure adjusting mechanism comprises a spring, a front valve body or an ink storage chamber, a valve membrane, a rear valve body or a dome, a vent hole, and an air groove. There is a spring between the valve membrane and the front valve body, and an air groove is formed in the rear valve body, a convex concave hole is formed in the middle of the bottom surface of the groove, and a small circular hole with a convex edge is opened on the valve film. The round hole is spring-loaded in the recessed hole of the rear valve body. 4. A universal printer cartridge according to claim 1 or 2 or 3, wherein the pressure adjusting mechanism is disposed in the ink storage chamber or on the face cover, and the face cover or the ink storage chamber has a vent hole and an atmosphere. The same. 5 . The universal printer cartridge according to claim 4 , wherein a sealing ring is disposed at the ink outlet of the ink storage chamber, and a sealing ball is disposed at an inner ring of the sealing ring, and the sealing ball is provided by a sealing ball The spring is placed outside the inner ring of the sealing ring, and the face cover or the ink storage chamber and the atmosphere through hole are a relatively long passage, and an anti-leakage mechanism is arranged in the passage. A universal printer cartridge according to claim 5, wherein the ink inlet port to the ink outlet port is provided at the lowest end of the ink cartridge. 7. A universal printer cartridge according to claim 6 wherein: said pressure adjustment mechanism is a one-way valve mechanism. A universal printer cartridge according to claim 7, wherein: the mechanism of the one-way valve has a diameter of 15 3! ~ 30mm between. A universal printer cartridge according to claim 8, wherein said one-way valve is disposed on any one of the ink cartridges.