CN203063286U - Ink box used for ink-jet printer - Google Patents

Abstract

The utility model relates to an ink box used for an ink-jet printer. The ink box comprises an ink storing chamber used to store the ink, an ink supply port used to supply the ink to a printer ink supply needle and a valve mechanism used to selectively connect the ink storing chamber and the ink supply port. The valve mechanism comprises two sealing elements which are oppositely contacted tightly and are made of an elastic material. The at least one sealing element is provided with a small hole. Faying surfaces of the two sealing elements maintain connection with the ink storing chamber. Opposite surfaces of the two sealing elements are connected with the ink supply port. In the prior art, valve body opening and/or closing control is not stable. By using the ink box of the utility model, the above problem is solved.

Description

A kind of cartridge of ink-jet printer

Technical field

The utility model relates to a kind of cartridge of ink-jet printer.

Background technology

Usually be provided for controlling the parts of ink feed in existing a lot of cartridge of ink-jet printer, valve body for example, sponge, constant voltage chamber etc.Wherein, utilize the print cartridge valve body structure of valve body control negative pressure and then control ink feed usually as shown in Figure 1a, be formed with water control valve in the inking chamber 1, water control valve comprises the valve seat made from the integrally formed hard material of toner cartridge main body 2, middlely forms foraminate membrane valve 3.Under the valve body closed condition, membrane valve props up valve seat 2 under the elastic force effect of spring 4, and the aperture of membrane valve 3 is covered by valve seat 2.When the membrane valve both sides produced pressure differential, membrane valve was against the elastic force distortion of spring, and water control valve is opened.As seen from the above description, whether closing or open by membrane valve of this water control valve is judged with the valve seat butt, and valve seat is made by hard material, therefore, may there be the undesirable problem of sealing effectiveness control between membrane valve and the valve seat, and when water control valve was opened, the deflection of membrane valve was limited, so the effect control of opening of water control valve also has problems.

In addition, patent CN2905439Y discloses another kind of valve body structure, shown in Fig. 1 b, this water control valve is close to by two valve blocks up and down and is formed, and be formed with two apertures that stagger mutually in the position on two valve blocks, the aperture of last valve block 5 is communicated with ink outlet port by first chamber 7, and the aperture of lower disc 6 is communicated with ink storage chamber by second chamber 8.Two valve blocks fit tightly shown in the figure, and two apertures on the valve block are all sealed, and water control valve is in closed condition; When ink supply pin suction ink causes that first chamber, 7 negative pressure increase, produce pressure differential between first chamber 7 and second chamber 8, make two valve blocks produce deformation to same direction, but because the pressure difference that the binding face of two valve blocks can bear, deformation quantity is also different, therefore, forms the gap between the binding face of two valve blocks, this gap allows ink therefrom to flow, thereby has been communicated with ink storage chamber and ink outlet port.Said structure adopts two valve blocks to be close to realize the sealing of water control valve mutually, can reach good sealing control effect, when but this water control valve is opened, two valve blocks are out of shape to equidirectional, utilize two valve blocks deformability difference and valve body is opened in the gap that forms between two valve block binding faces, owing to the reasons such as ink viscosity between valve sheet deformation quantitative limitation or two the valve block binding faces may cause the formation in gap to be obstructed or the gap that forms is not enough to form therein China ink stream, therefore, exist valve body to open the control problem of unstable.

The utility model content

The utility model relates to a kind of cartridge of ink-jet printer, and the valve system of cartridge of ink-jet printer especially is to solve in the prior art valve seal and/or to open the control problem of unstable.

In order to address the above problem, the technical solution adopted in the utility model is:

A kind of cartridge of ink-jet printer, comprise: the ink storage chamber of storage ink, with the ink supply port of ink feed to the printer ink-providing pin, and the valve system that selectively is communicated with described ink storage chamber and described ink supply port, described valve system comprises two seal members of being made by elastomeric material that can be close to relatively, be formed with aperture at least one seal member, it is characterized in that, but the binding face of described two seal members keeps being communicated with described ink storage chamber, and the phase back side of described two seal members is communicated with described ink supply port.

Described seal member is the valve film;

Described seal member also comprises seal boss respectively, but described binding face is the seal boss face, and described aperture is formed on the described seal boss;

Also comprise outstanding outer rim around the described seal member respectively, two seal members are close to contact mutually along outer rim and are assembled to described valve system;

Described valve system also comprises the valve pocket that holds described seal member, is formed with the phase back side of one of them seal member of connection and the aperture of described ink supply port in the valve pocket;

Described valve system also comprises valve gap, is formed with the phase back side of described another seal member of connection and the aperture of described ink supply port on the valve gap;

All be formed with aperture on described two seal members, the aperture position on described two seal members is staggered.

Also be formed with the ink supply chamber between the phase back side of described two seal members and the described ink supply port, described ink supply chamber is communicated with described ink supply port by ink-feed channel.

After adopting technique scheme, but because the binding face of two seal members keeps being communicated with ink storage chamber, the phase back side of two seal members is communicated with ink supply port.Not only strengthened the sealing effectiveness of valve body, and the gap between two seal members forms than being easier to, can guarantee ink is passed through smoothly, solved in the prior art valve body and opened and/or the closing control problem of unstable.After print cartridge is assembled to ink-jet printer execution printing, the ink supply pin continues the suction ink and causes near the negative pressure of ink supply port to increase, because the phase back side of two seal members all is communicated with ink supply port, therefore, when described negative pressure increases to a certain degree, two direction distortion that seal member begins to deviate from towards each other, thus between two seal members, formed the gap, and valve system is opened.In prior art, open valve by the gap of a valve film distortion generation, the mode that perhaps produces the different deformability difference of valve block of deformation in the same direction by two and produce the gap is therein opened valve body, gap in the technical solutions of the utility model between two seal members forms than being easier to, and can guarantee ink is passed through smoothly, solve in the prior art valve body and opened and/or the closing control problem of unstable.

Description of drawings

Fig. 1 a and Fig. 1 b are respectively two kinds of water control valve structure charts that prior art discloses.

Fig. 2 present embodiment of doing relates to the exploded view of print cartridge.

Fig. 3 is the cavity body structure figure of print cartridge in the utility model.

Fig. 4 is the decomposition chart of print cartridge valve system in the utility model.

Fig. 5 is the structure chart of print cartridge valve gap in the utility model.

Fig. 6 a is an orientation diagram of the profile of print cartridge in the utility model.

Fig. 6 b is the part enlarged drawing of Fig. 6 a in the utility model.

Fig. 6 c is another orientation diagram of the profile of print cartridge in the utility model.

Fig. 7 is flow of ambient air path block diagram in the utility model.

Fig. 8 is for being in the print cartridge cutaway view of print state in the utility model.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the embodiment that the utility model is related to is carried out clear, intactly describes.

Be illustrated in figure 2 as the exploded view that present embodiment relates to print cartridge, as can be seen from the figure, print cartridge comprises main body 10, diaphragm seal A and adapter 11, by welding or the mode of pasting diaphragm seal A is fixed on the main body 10, is formed on valve system 40 on the main body with sealing.Also be provided with on the main body the ink supply port 20 of ink feed to ink-jet printer, be communicated with the air guide port 30 of ambient atmosphere and ink storage chamber.

Be illustrated in figure 3 as the cavity body structure figure of print cartridge, print cartridge totally is divided into 50 two cavitys of ink storage chamber 60 and ink supply chamber, wherein, ink supply chamber 50 is communicated with ink supply port 20 by ink-feed channel 21, an end that is arranged in ink supply chamber 50 of ink-feed channel 21 is provided with filter screen 501, ink in the ink supply chamber is supplied to ink-feed channel 21 through after the filtration of filter screen 501, and then is fed to ink jet-print head by ink supply port 20, satisfies the demand of printing.Introduce in detail by valve system 40(back between ink supply chamber 50 and the ink storage chamber 60) the selective relation that is communicated with of maintenance.In addition, ink storage chamber 60 also is provided with the air guide port 30 that is communicated with atmosphere, air guide channel 301 and interface channel 602, and interface channel 602 is communicated with ink storage chamber 60 by a breach 603.

Be illustrated in figure 4 as the decomposing schematic representation of print cartridge valve system 40, as seen from the figure, valve system comprises valve pocket 440, valve film 420,430, valve gap 410.

The cavity of valve pocket 440 for from a sidewall of toner cartridge main body 10, being recessed to form to ink storage chamber 60, be formed with the aperture 442 that is communicated with air guide channel 301 and interface channel 602 respectively in the valve pocket, 443, and one be used for holding valve film 420,430 pit 441, also be provided with the aperture 444 that is communicated with ink supply chamber 50 in the pit 441, the edge near pit 441 on valve pocket 440 diapires offers aperture 445, and valve pocket 440 keeps being communicated with by aperture 445 with ink storage chamber 60.

The seal member of valve system 40 is by two valve films of being made by silica gel or other elastomeric materials 420,430 form, and two plate valve films all are provided with the outstanding outer rim 425,435 that plays sealing function and the ledge that is used for the standing valve film, be provided with aperture 422,432 in the ledge respectively.For convenience, here valve film 420 is called the first valve film, valve film 430 is called the second valve film, the first valve film 420 is relative with the second valve film 430 to be close to and to be assemblied in the pit 441 of valve pocket 440, but two binding faces that are called valve system 40 seal members as if two sides that two valve films are close to relatively, and two sides that two other is not relative are called two phase back sides of valve system 40 seal members, then in the present embodiment, but two binding faces of valve system seal member are two the seal boss faces being close to mutually that are formed on two valve film opposite faces, for convenience, here the boss on the first valve film 420 is called first boss 421, boss on the second valve film 430 is called second boss 431, the end of two boss is the different sealing flange of external diameter 423,433, adopt optimum mode in the present embodiment, be that the external diameter of flange 433 is greater than the external diameter of flange 423, when such two boss are close to mutually, the flange of two various outer diameters can play the effect of dual-seal, sealing effectiveness is more firm, it then is airtight that the centre of first boss 421 is provided with aperture 424, the second boss 431.The art personnel should understand, realize that the seal means of valve system is not limited only to the boss of valve film, can also be other structures that encapsulated coil, rubber washer etc. are made by elastomeric material, perhaps two membranaceous elastomeric elements of valve directly contact etc. all the covering scope in the application.

Valve gap 410 is made by rigid plastics or with hard materials such as toner cartridge main body identical materials, after two valve films are assembled in the pit 441 of valve pocket, valve gap 410 is welded in the valve pocket to form the cavity of complete sealing.Valve gap 410 is formed with passage 411 on the side of valve film, passage 411 1 ends extend to the aperture 412 that runs through valve gap 410, other end portless is extended, when valve gap 410 was assembled in the valve pocket 440, the other end of passage 411 was communicated with aperture 502 on being positioned at the toner cartridge main body sidewall, with reference to figure 3, as can be seen, aperture 502 is arranged in ink supply chamber 50, and therefore, the aperture 412, the passage 411 that are positioned on the valve gap 410 all are communicated with ink supply chamber 50 by aperture 502.Be illustrated in figure 5 as the side that valve gap 410 is installed with respect to the valve film, be formed with stair-stepping annular flange flange 414 and helical form flange 413 on this side.Stair-stepping annular flange flange 414 is used for extruding and fixing valve film 420 when valve gap 410 is welded to valve pocket.Formed spiral helicine labyrinth channel 415 between the helical form flange 413, when valve gap 410 is welded in the valve pocket 440, helical form flange 413 closely contacts with the valve pocket diapire, labyrinth channel 415 outmost turns passages cover on the aperture 443 on the valve pocket diapire, the center of labyrinth channel 415 then covers on the aperture 442 on the valve pocket diapire (with reference to figure 6), therefore, after valve gap 410 was welded in the valve pocket 440, aperture 442 and aperture 443 were communicated with by labyrinth channel 415.With reference to figure 3, as can be seen, the aperture 442 and the aperture 443 that are positioned at the valve pocket diapire are communicated to air guide port 30 and ink storage chamber 60 by air guide channel 301 and interface channel 602 respectively, therefore, can clearly find out the circulation path of atmosphere as shown in Figure 7, at first, ambient atmosphere enters the air guide channel 301 from air guide port 30, and then enter into the center of the labyrinth channel 415 that is positioned on the valve gap 410 by aperture 442, atmosphere arrives outmost turns from the center of labyrinth channel 415 through labyrinth channel 415, arrive interface channel 602 by aperture 443 then, finally be communicated with ink storage chamber 60.Also be provided with breach 416 on the outer rim of valve gap 410, when valve gap 410 was welded in the valve pocket 440, breach 416 was used for holding the ledge of two valve films, and the standing valve film.

Fig. 6 a, Fig. 6 b, Fig. 6 c is depicted as the cutaway view of toner cartridge main body, wherein Fig. 6 b is the partial enlarged drawing of Fig. 6 a, as can be seen from the figure, and two valve films 420,430 flange and boss fit tightly, thereby have formed a cavity 401 around the boss between two valve film binding faces.The outer rim of two plate valve films contacts butt with the edge of valve pocket pit 441 and the stepped annular flange flange 414 of valve gap respectively, the ledge of the two plate valve films butt that then contacts with the breach 416 of the diapire of valve pocket 440 and valve gap respectively, thus the valve film is stably fixed in the valve pocket 440.The aperture 422 that forms in two valve film ledges and aperture 432 are toward each other, and it is relative with the aperture that forms 445 on the valve pocket diapire and be communicated with, in conjunction with Fig. 3, can clearly find out, aperture 445 is communicated with ink storage chamber 60, from Fig. 6 b, can know again and find out, aperture 422 in the first valve film, 420 ledges is sealed port by the outer rim of valve gap, make aperture 422,432 with two plate valve films between cavity 401 be communicated with, therefore, between cavity 401 and the ink storage chamber 60 by aperture 422,432,445 keep connected relation.

In addition, formed cavity 402 between the side that valve film 420 is not relative with valve film 430 and the valve gap 410, formed cavity 403 between the side that valve film 430 is not relative with valve film 420 and the valve pocket 440, as can be seen, cavity 402 is communicated with passage 411 by the aperture 412 on the valve gap from Fig. 6 a and Fig. 6 b, and then extends to the aperture 502 that is communicated with ink supply chamber 50, therefore, the cavity 402 that forms between the first valve film 420 and the valve gap 410 passes through aperture 412, passage 411, and aperture 502 keeps being communicated with ink supply chamber 50.From Fig. 6 c as can be seen, cavity 403 is communicated with the passage 503 that is connected ink supply chamber 50 by the aperture 444 that is arranged in valve pocket pit 441, therefore, the cavity 403 that forms between the second valve film 430 and the valve pocket 440 keeps being communicated with ink supply chamber 50 by aperture 444 and passage 503.That is to say that cavity 402 and cavity 403 all keep being communicated with ink supply chamber 50.

Mainly introduce the operation principle of valve system 40 below, Figure 8 shows that print cartridge is in the cutaway view under the print state.Print cartridge is installed in the ink-jet printer, and along with the carrying out of printing, the ink supply pin of printer constantly aspirates ink from print cartridge ink supply port 20, and the ink in the ink supply chamber 50 constantly is consumed, and causes negative pressure increase in the ink supply chamber.Described as can be known by the front, the cavity 402 that is positioned at valve film 420 1 sides is communicated with ink supply chamber 50 by aperture 412, passage 411 and aperture 502, and the cavity 403 that is positioned at valve film 430 1 sides is communicated with ink supply chamber 50 by aperture 444 and passage 503, therefore, when the printing that continues caused ink supply chamber 50 negative pressure to increase, cavity 402 and cavity 403 all were in the state of negative pressure.Yet the cavity 401 between two valve films is communicated with ink storage chamber 60 by aperture 422,432,445, and at this moment, ink storage chamber 60 is in the state of malleation with respect to ink supply chamber 50, so cavity 401 also is in the state of malleation.That is to say, between the cavity 401 of valve film 420 both sides and cavity 402, have Negative Pressure Difference, be designated as P1, between the cavity 401 of valve film 430 both sides and cavity 403, also have Negative Pressure Difference, be designated as P2.As shown in Figure 8, as Negative Pressure Difference P1 during greater than the deformation ability to bear of valve film 420,420 beginnings of valve film produce deformation towards cavity 402, i.e. direction shown in the arrow X among the figure, equally as Negative Pressure Difference P2 during greater than the deformation ability to bear of valve film 430,430 beginnings of valve film produce deformation, i.e. direction shown in the arrow Y among the figure towards cavity 403.Two direction distortion that the valve film deviates from respectively toward each other mutually, first boss 421 and second boss 431 are separated from one another, so, having formed between two boss is enough to gap 404 that ink is passed through, and the formation in this gap makes the cavity 401 between two valve films and the cavity 402 that is positioned at valve film 420 1 sides be communicated with by the apertures 424 in the middle of first boss 421.Therefore, print cartridge inside has formed the ink flow path shown in stream F among Fig. 8, that is to say, ink in the ink storage chamber 60 is by cavity 401, gap 404, cavity 402, passage 411, be supplied in the ink supply chamber 50 with aperture 502, alleviated the negative pressure variation that produces in the ink supply chamber, guaranteed the regular supply of ink.

When ink-jet printer is not worked, the ink supply pin stops to aspirate ink, Negative Pressure Difference between cavity 402,403 and the cavity 401 relaxes gradually, when above-mentioned Negative Pressure Difference relaxes to a certain degree, when being weaker than the deformability of valve film, two valve films recover deformation gradually, and towards relative direction distortion, the boss of two valve films is adjacent to gradually, the flange of boss end tightly seals two plate valve films, and valve system 40 returns to closing state again.

The deformability size that should be pointed out that two valve films is unqualified, can produce deformation simultaneously, also can one in front and one in back produce deformation.The aperture that forms on the valve film (for example aperture 424) is not limited on some valve films, can be any in two valve films, also can be disclose in the prior art shown in similar Fig. 1 b on two valve films, the aperture that staggers mutually in the position is set respectively.No matter how aperture arranges, and when not having active force to act on the valve film, two plate valve films are close to mutually, and aperture all can be by stable sealing.

Seen from the above description, two plate valve films 420 of valve system 40,430 two relative sides all are communicated with ink storage chamber 60, and two valve films do not have two relative sides all to be communicated with ink supply chamber 50, that is to say, but the binding face of valve system seal member all is communicated with ink storage chamber, the phase back side of seal member all is communicated with ink supply port, therefore, no matter the negative pressure in ink supply chamber 50 still is that the negative pressure of ink storage chamber 60 is greater than the negative pressure in ink supply chamber 50 greater than the negative pressure of ink storage chamber 60, the deformation direction of two seal members is always opposite, namely towards mutually close direction or towards the direction generation deformation that deviates from mutually.When there was not Negative Pressure Difference in the seal member both sides, two seal members fitted tightly, and guaranteed that the sealing effectiveness of valve system is firm.When printing was carried out, the negative pressure that produces in the ink supply chamber can act on two phase back sides of valve system simultaneously, made two seal members to the direction distortion that deviates from mutually, thereby form the gap between two seal members ink was therefrom passed through.Because the deformation direction of two seal members is opposite, so the formation in this gap is more prone to, and the gap that forms is enough big, can guarantee the proper flow of ink, is hindered and can not cause valve system to be opened owing to the influence of problems such as ink viscosity.The present techniques scheme can be stable the opening and closing of application valve body, solved in the prior art common valve body and opened or closing control effect problem of unstable.

The art personnel should be understood that the seal member of valve system is not defined as the valve film, can be other multiple parts that can play the excellent sealing effect, and these parts can produce deformation and get final product under the Negative Pressure Difference effect.Above-mentioned distortion can solve problems of the prior art equally, guarantees closing and open and being subjected to stable control of valve system.

Claims (8)

1. cartridge of ink-jet printer, comprise: the ink storage chamber of storage ink, with the ink supply port of ink feed to the printer ink-providing pin, and the valve system that selectively is communicated with described ink storage chamber and described ink supply port, described valve system comprises two seal members of being made by elastomeric material that can be close to relatively, be formed with aperture at least one seal member, it is characterized in that, but the binding face of described two seal members keeps being communicated with described ink storage chamber, and the phase back side of described two seal members is communicated with described ink supply port.

2. cartridge of ink-jet printer as claimed in claim 1 is characterized in that, described seal member is the valve film.

3. cartridge of ink-jet printer as claimed in claim 1 is characterized in that, described seal member also comprises seal boss respectively, but described binding face is the seal boss face, and described aperture is formed on the described seal boss.

4. as claim 2 or 3 described cartridge of ink-jet printer, it is characterized in that, also comprise outstanding outer rim around the described seal member respectively, described two seal members are close to contact mutually along outer rim and are assembled to described valve system.

5. cartridge of ink-jet printer as claimed in claim 4 is characterized in that, described valve system also comprises the valve pocket that holds described seal member, is formed with the phase back side of one of them seal member of connection and the aperture of described ink supply port in the valve pocket.

6. cartridge of ink-jet printer as claimed in claim 5 is characterized in that, described valve system also comprises valve gap, is formed with the phase back side of described another seal member of connection and the aperture of described ink supply port on the valve gap.

7. cartridge of ink-jet printer as claimed in claim 6 is characterized in that, all is formed with aperture on described two seal members, and the aperture position on described two seal members is staggered.

8. cartridge of ink-jet printer as claimed in claim 7 is characterized in that, also is formed with the ink supply chamber between the phase back side of described two seal members and the described ink supply port, and described ink supply chamber is communicated with described ink supply port by ink-feed channel.

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