CN2654350Y

CN2654350Y - Ink box

Info

Publication number: CN2654350Y
Application number: CN 200320117610
Authority: CN
Inventors: 萧庆国; 金本友
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2003-10-30
Filing date: 2003-10-30
Publication date: 2004-11-10
Anticipated expiration: 2013-10-30

Abstract

The utility model relates to an ink cartridge for an ink jet printer, in particular to an ink cartridge which is charged via a one-way valve element. The utility model comprises an ink cartridge body; wherein, an ink storage cavity is arranged in the ink cartridge body; an air hole which is communicated with the ink storage cavity and the external is arranged at the top of the ink cartridge body; an ink outlet opening with a sealing ring inside is positioned at the bottom of the ink cartridge body; the one-way valve element is arranged at the lowermost of the ink storage cavity, namely, the one-way valve is fixed at the lower liquid level of the ink storage cavity, moreover, an ink inlet end of the valve element is low, while an ink outlet end is high; an ink feed cavity is positioned at the upper reach of the ink outlet opening of the ink cartridge; the ink feed cavity is connected with the ink outlet end of the valve element via a pipeline. Since the one-way valve element is fixed at the lower part of the ink storage cavity, the ink inlet end is lower, effectively avoiding the foam entering the one-way valve element.

Description

Print cartridge

Technical field

The utility model relates to a kind of print cartridge that ink-jet printer is used, and particularly utilizes check valve assembly to carry out the print cartridge of ink supply.

Background technology

Adopting check valve to substitute the print cartridge of keeping negative pressure in the black chamber such as porous materials such as sponges, the Rong Moliang in same volume China ink chamber is increased, is the developing direction of print cartridge design.

But for the print cartridge of some one-way valve structures, installation first often has the phenomenon generation of polluting print media or printer from the ink outlet port ink leak, and the situation that occurs the printhead damage once in a while also mostly occurred in the moment of changing this class print cartridge.In addition, the print cartridge of this structure can't advance China ink in the ink supply chamber that forms between check valve and the ink outlet port when adopting traditional Vessel in Negative Pressure Filling method to produce, address this problem, and needs to adopt very complicated filling process.For addressing this problem, the applicant has provided a solution in No. 02271814.1 Chinese patent application, has promptly settled a reverse check valve between ink supply chamber and black chamber, when the instantaneous pressure that the ink supply pin inserts is excessive, and this opening of valves.When adopting traditional Vessel in Negative Pressure Filling method in the production, when black chamber produces after relative ink supply chamber is negative pressure, oppositely check valve is opened, and up to two cavity pressure balances, when China ink was irritated in black chamber, the ink supply chamber was a negative pressure with black relatively chamber, and check valve is opened and allowed China ink inflow ink supply chamber.

In addition, because the characteristics of check valve print cartridge structure, there is an ink supply chamber in the check valve ink-outtake end inevitably to the ink outlet port sealing ring, after China ink in the print cartridge does not use up or shows and use up that (actual still have quantitative residual China ink) takes off from recording equipment, China ink can flow out from the through hole of sealing ring, pollutes working environment and besmirches operating personnel's clothing.Do not use up and also can occur printing bad phenomenon when black print cartridge is packed the record equipment once more into.To this, the applicant has provided following solution in No. 03201870.3 Chinese patent application, sealing ring comprises the elastomer of a tubulose, there is upwardly extending ink supply needle guide hand-hole elastomeric lower end, and this entrance hole is not to be through hole, and its top is a capping film, capping film has certain thickness, there is the slit of connection entrance hole inside and capping film upper space at the capping film middle part, and promptly the slit is in air-tight state under free state, and liquid can't pass through.It is used for the ink supply pin and passes, and the ink supply pin still do not allow liquid to pass through the shank banding in the slit when passing, and the slit was by the elasticity state that affranchises when the ink supply pin withdrawed from.

After above-mentioned two kinds of static problems that the print cartridge of one-way valve structures exists are solved, also has a problem that dynamically exists down, when being exactly ink jet-print head high speed back and forth movement process, can make the black liquid upheaval and produce foam thereupon in the black chamber, thisly contain the foam of gas once enter the ink supply pin through check valve, not only can reduce print quality, also can stop up the jet orifice in the printhead, damage printhead.

Summary of the invention

Main purpose of the present utility model is to provide a kind of print cartridge that can have the foam that stops black chamber to contain gas to enter printhead.

For this reason, the skill print cartridge structure that the utility model adopts is, a box body is arranged, and ink storage chamber is arranged in box body, and the box body top has and is communicated with ink storage chamber and extraneous pore.Be positioned at the ink outlet port of box body bottom, built-in sealing ring in addition.Check valve assembly is placed in the foot of ink storage chamber, that is to say, check valve is fixed on the low liquid level place of ink storage chamber, and, valve module advance black bottom, ink-outtake end height, the ink outlet port upstream of print cartridge is the ink supply chamber, the ink supply chamber is connected with the ink-outtake end of valve module by pipeline.

Produce the top that foam always floats over black chamber in the print cartridge, the utility model is fixed on the bottom of ink storage chamber with one-way valve designs, simultaneously its to advance the China ink end lower, avoided foam to enter check valve effectively.

Description of drawings

Fig. 1 is the sectional structure chart of an exemplary embodiments;

Fig. 2 is the partial enlarged drawing at Fig. 1 check valve assembly place;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the exploded view of this embodiment.

The utility model is described in further detail below in conjunction with this embodiment and accompanying drawing thereof.

Embodiment

Referring to Fig. 1, a pore is arranged at the top of box body 1, and built-in porous plug 3 can enter in the ink storage chamber 2 extraneous air, and the installation hole 6 of a check valve assembly 4 is arranged in the bottom of ink storage chamber 2.Built-in one of the ink outlet port of print cartridge 1 has the sealing ring 8 that self-closing is crossed the pin slit, the structure of sealing circle and characteristics have provided detailed explanation in No. 03201870.3 Chinese patent application, sealing ring 8 upstreams are an ink supply chamber 7, and ink supply chamber 7 links to each other with the ink-outtake end 45 of check valve assembly 4 by pipeline 5.4 of check valve assemblies allow black liquid from ink storage chamber 2 to pipeline 5 one-way flow.Also has another black liquid passage between ink storage chamber 2 and the ink supply chamber 7, this passage is made of a reverse check valve 9, it is only opened in slit 91 during greater than the pressure in the ink storage chamber 2 in ink supply chamber 7 internal pressures, form passage, otherwise in the closed closing passage, in other words, this passage only allows fluid to flow from ink supply chamber 7 to ink storage chamber 2, the embodiment of this characteristic in the print cartridge manufacture process is when adopting the Vessel in Negative Pressure Filling refilling, can successfully take out negative pressure to the ink supply chamber by ink storage chamber 2; Embodiment in the print cartridge use is when print cartridge installation ink supply pin enters ink supply chamber generation instantaneous pressure, to the ink storage chamber drainage pressure, to protect printhead with this.

Referring to Fig. 2, check valve assembly 4 is made of bonnet, 41, bottom flange 42 and valve body 43, after having fixed check valve assembly 4 in the installation hole 6, be separated into 62 two spaces in top 61 and bottom, two spaces are communicated with by an inking conduit (figure is invisible) that is arranged on the sidewall 63.Pressure in pipeline 5 is during less than the pressure in the installation hole 62, the valve nozzle of the valve body 43 that elastomeric material is made leaves the valve face of bottom flange 42, thereby open installation hole 62, advance China ink end 44, ink-outtake end 45 is to the ink-feed channel of pipeline 5, advance the China ink end and 44 times filter screen 46 is housed also, but the impurity in the filtering China ink liquid, the China ink that advances that makes impurity can not enter check valve assembly 4 holds 44.

Referring to Fig. 3, this is the profile of reflection installation hole 6 structures, for its version, black liquid passage relation, three installations among the figure are described, omitted check valve assembly 4 in 6, only in the installation hole 6 of diagram high order end, provided a fictitious outline of check valve assembly 4 with double dot dash line.Each installation hole 6 is a column nest that cooperates with check valve assembly 4 outer rims substantially, but four vertical inking conduits 64 are arranged on sidewall 63, and they are used for the black liquid in the ink storage chamber 2 is caused the black end 44 of advancing of check valve assembly 4.

Referring to Fig. 4, this example is a Three-colour ink cartridge, thereby has three separate separately ink storage chambers 2, pore, check valve assembly, ink supply chamber, ink outlet port, and fills the black liquid of different colours in the chamber.The identical label structure identical with aforementioned expression among the figure, box body are by main body 11 and cover 12 and be welded, and the top Feng Youyi piece film 31 of lid 12 also is equipped with a chip 10 in a side of box body, and the collar extension of sealing ring 8 also has a film 81.

Claims

1, print cartridge comprises

A box body (1), in ink storage chamber (2) is arranged, the box body top has and is communicated with ink storage chamber and extraneous pore;

Be positioned at the ink outlet port of box body bottom, built-in sealing ring (8);

It is characterized in that:

Check valve assembly (4) is placed in the foot of ink storage chamber, and the China ink that advances of check valve assembly (4) is held (44) end, ink-outtake end (45) height;

Print cartridge ink outlet port upstream is ink supply chamber (7), and ink supply chamber (7) are connected with the ink-outtake end (45) of check valve assembly (4) by pipeline (5).

2, print cartridge according to claim 1 is characterized in that:

The installation hole (6) that holds described check valve assembly (4) is arranged at ink storage chamber (2) bottom, and described check valve assembly (4) is laid wherein, and installation hole (6) sidewall (63) has inking conduit (64).

3, print cartridge according to claim 1 and 2 is characterized in that:

Also has a black liquid passage that is equipped with reverse check valve (9) between ink storage chamber (2) and ink supply chamber (7).

4, print cartridge according to claim 3 is characterized in that:

Described sealing ring (8) is one to have the sealing ring that self-closing is crossed the pin slit.

5, print cartridge according to claim 4 is characterized in that:

Independently ink storage chamber, pore, valve module, ink supply chamber, ink outlet port are arranged in the box body of described print cartridge more than three or three separately, and in the chamber, fill the black liquid of different colours.

6, print cartridge according to claim 5 is characterized in that:

The China ink end (44) that advances of described check valve assembly (4) is equipped with filter screen (46).