CN201900799U - Ink cartridge pressure controller and ink cartridge comprising same - Google Patents

Abstract

The utility model relates to an ink cartridge pressure controller, which can be mounted on an ink cartridge detachably. The ink cartridge pressure controller comprises a cover and a cavity component, the cover and the cavity component form a sealed cavity, the cavity comprises a valve mechanism for regulating pressure of the cavity component, the valve mechanism comprises a valve cavity, an ink inlet, an ink outlet, a valve seat and a valve spool, wherein the ink inlet is used for leading ink into the valve mechanism, the ink outlet is used for leading the ink to flow out of the valve mechanism, the valve seat is provided with at least on valve hole, the valve holes can be opened or closed alternatively through variation of pressure on two sides of the valve spool, the ink outlet is arranged at the highest point of the valve cavity in the direction of gravity when the ink cartridge pressure controller is in use. The whole valve mechanism can be filled by ink before the ink flows outwards, gaps between the valve spool and the valve seat, which are caused by manufacturing error, can be sealed by the aid of water surface tension, two sides of the valve spool are blocked so as to generate pressure difference, and accordingly internal pressure of the ink cartridge can be controlled stably and ink leakage is avoided.

Description

A kind of print cartridge is with pressure controller and comprise the print cartridge of this pressure controller

Technical field

The utility model relates to a kind of print cartridge with pressure controller and comprise the print cartridge of this pressure controller.

Background technology

Ink-jet printer, its printing type normally provides Mo Yuan by the print cartridge that is used to hold ink, via corresponding ink flow path with ink transport to record head, and the nozzle ejection that under the driving of print signal ink is provided with from record head is finished the record of character or figure to recording mediums such as paper.

In early days, print cartridge as supply record head ink, mainly be by in ink storage chamber, placing the negative pressure of cavernous body with control print cartridge inside, but because the volume of cavernous body is bigger, occupy volume bigger in the ink storage chamber, make the black volume of storage diminish, and also can cause the inner residual China ink of print cartridge more under the effect of cavernous body self capillary force.

Given this, more and more producers keep negative pressure state in the print cartridge ink storage chamber by be provided with one-way valve mechanism in print cartridge, so, both can reduce residual China ink amount, also can increase the storage China ink volume of print cartridge.Wherein, more in the mode that adopts membrane valve again, be that valve system is provided with a valve seat and valve film (being spool), and valve seat is provided with several valve openings, the valve film cover valve opening top and can be according to the pressure differential of its both sides and near or leave valve opening, thereby close or open ink flow path wherein, so can stably control the negative pressure of print cartridge inside, stably supply with ink to ink outlet port.Obviously, when print cartridge does not print or valve both sides differential pressure of membrane when not reaching predetermined value, the valve film all with valve seat on wall except that valve opening closely cooperate.

But, because foozle, cause the plane out-of-flatness of valve film easily, after being installed to valve system, and form the slit between the wall of valve seat easily, then behind print cartridge perfusion ink, the ink of valve system one side leaks into its opposite side easily, be to be communicated with between the valve both sides, then between both sides, be difficult to form pressure differential, the negative pressure of promptly uncontrollable print cartridge inside.

The utility model content

The purpose of this utility model is to provide a kind of print cartridge pressure controller, to solve the technical problem that can not stablize the negative pressure of controlling print cartridge inside under there is error in existing print cartridge in manufacturing with pressure controller the situation.

For solving above technical problem, the technical scheme that the utility model is taked is:

A kind of print cartridge pressure controller is removably mounted on the print cartridge, comprising:

Covering;

Chamber part forms sealed cavity with described covering, and described chamber part comprises that one regulates the valve system of chamber part pressure, and described valve system comprises:

Valve pocket;

Direct ink enters the ink entry of described valve system;

Direct ink is left the ink outlet of described valve system;

Be provided with the valve seat of at least one valve opening;

Change and optionally seal or leave the spool of described valve opening according to the pressure of its both sides;

It is characterized in that: the position of the outlet of described ink is arranged on described print cartridge when using with pressure controller the above valve pocket peak of gravity direction.

Described spool comprises round plate and stem, and wherein, described stem is connected with described round plate, and described round plate changes according to the pressure of its both sides and seals or depart from described valve opening.

Described print cartridge pressure controller is independent product.

Described print cartridge enters the mobile inlet of described chamber part and the mobile outlet that direct ink enters described chamber part with also being provided with direct ink in the pressure controller.

Described valve system also comprises a filter screen, and described filter screen is arranged on the stream between described mobile inlet and the described valve system.

Described print cartridge also is provided with one with pressure controller and is positioned at first detent mechanism that it inserts the direction of insertion of print cartridge, and is positioned at second detent mechanism with the perpendicular direction of direction of insertion.

Described first detent mechanism is a wedge, and second detent mechanism is a hollow circuit cylinder and the cylindrical portion that is arranged on hollow circuit cylinder.

The utility model provides a kind of print cartridge simultaneously, be removably mounted in the inkjet-printing device, comprise the ink storage chamber that is used for storing the ink that is supplied to inkjet-printing device and be used for the ink transport of ink storage chamber ink outlet port to inkjet-printing device, it is characterized in that, also be provided with above-mentioned print cartridge pressure controller in the described ink storage chamber.

After having adopted technique scheme, because the position of ink outlet is arranged on described print cartridge when using with pressure controller the above valve pocket peak of gravity direction.Ink will inevitably be full of whole valve system before outwards flowing out, thereby spool that the surface tension sealing that can utilize water causes because of foozle and the slit between the valve seat, make the spool both sides not be communicated with and can produce pressure differential, can guarantee the stable control of Ink Cartridge inner pressure, prevent ink leakage.Solved the technical problem of the negative pressure that can not stablize control print cartridge inside under there is error in existing print cartridge in manufacturing with pressure controller the situation.

Description of drawings

Fig. 1 is the print cartridge structural representation of the utility model embodiment;

Fig. 2 a is the print cartridge STRUCTURE DECOMPOSITION schematic diagram of the utility model embodiment;

Fig. 2 b is the schematic diagram of cover;

Fig. 2 c is the phantom of print cartridge;

Fig. 3 is the decomposing schematic representation of the chamber part of the utility model embodiment;

Fig. 4 a and 4b are the structural representation of the chamber part (removal spool) of the utility model embodiment;

Fig. 5 is the valve core structure schematic diagram of the utility model embodiment;

Fig. 6 a is the flow regime schematic diagram of the utility model embodiment valve system ink when closing;

The flow regime schematic diagram of ink when Fig. 6 b is the unlatching of the utility model embodiment valve system;

Fig. 7 is the structural representation of another print cartridge of the utility model.

Symbol description: 1 print cartridge, 2 box bodys, 3 covers, 4 ink storage chambers, 41 draw-in grooves, 5 ink outlet ports, 51 projections, 6 gas ports, 7 ink filling ports, 8 chamber parts, 81 ink entries, the outlet of 82 inks, 83 valve pockets, 84 valve seats, 841 valve openings, 842 through holes, 85 spools, 851 round plates, 852 stems, 853 restriction portions, 86 wedges, 87 hollow circuit cylinders, 88 cylindrical portion, 9 chips, 10 handles, 101 pawls, 11 recesses, 12 handle parts, 13 flow enters the mouth, and 14 flow exports.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

Below by the drawings and specific embodiments, the technical solution of the utility model is described in further detail.

A kind of ink-jet printer cartridge 1 is removably mounted on the printer, be used to supply ink to the printhead of printer on recording medium, to form image or literal.Fig. 1 is the structural representation ofprint cartridge 1 in the present embodiment, and Fig. 2 is the decomposition texture schematic diagram ofprint cartridge 1 in the present embodiment.

Shown in Fig. 1 and Fig. 2 a, Fig. 2 b,print cartridge 1 is made up ofbox body 2 andcover 3, wherein,box body 2 andcover 3 are made by plastics, be consolidated by welding manner between the two, and form an airtight chamber, promptly be used to store theink storage chamber 4 of the ink that is supplied to printhead.Also be provided with anink outlet port 5 onbox body 2 diapires, can match, to printhead, and be provided with a self-closing sealing ring (not shown) in theink outlet port 5 to seal with the ink transport that will be in theink storage chamber 4 stores with the ink supply pin on being arranged on printhead.This self-closing sealing ring adopts elastomeric material to make, and as silica gel, rubber etc., one end is provided with the diameter aperture suitable with ink supply pin diameter.So, afterprint cartridge 1 was packed printer into, the ink supply pin inserted from above-mentioned aperture, and passed above-mentioned sealing ring, can draw the ink in theink storage chamber 4; And whenprint cartridge 1 took out from printer, under the elastic reaction of elastomeric material, the part of being passed through by the ink supply pin in aperture sealing automatically again prevented that ink from leaking from ink outlet port 5.In addition, also be provided with gas port 6 andink filling port 7 on thecover 3, all be communicated withink storage chamber 4, wherein,ink filling port 7 is used for injecting inks toink storage chamber 4, utilizes seal member such as plug to seal first after the refilling, and gas port 6 then is used atprint cartridge 1 print procedure, in time replenish air to printcartridge 1 inside along with the consumption of ink, thereby keepprint cartridge 1 internal pressure balance.Whenprint cartridge 1 did not use, gas port more than 6 adopted the air guide film to seal, to prevent that ink is from wherein leaking.

In addition, as shown in Figure 2, also be provided with reducible chip 9 on theprint cartridge 1, haveclaw 101handle 10, be arranged onprint cartridge 1 diapire and away from therecess 11 ofink outlet port 5 one ends.Wherein, store the various information relevant in the chip 9,, and can carry out information communication with printer, the up-to-date information of real timerecord print cartridge 1 as quantity of ink, ink kind, date of manufacture, manufacturer etc. withprint cartridge 1; When being loaded inprint cartridge 1 on the printer,handle 10 makes theclaw 101 on it match with locking member on the printer towardsprint cartridge 1 sidewall generation elastic bending, meanwhile, above-mentionedrecess 11 matches with reference column on the printer, therebyprint cartridge 1 is fixed on the printer.And, also being provided with thehandle part 12 that makes things convenient for the user to holdprint cartridge 1 on theprint cartridge 1, it is formed by being arranged onprint cartridge 1 surperficial several tongues different in size, and being used to increases user's hand and the frictional force betweenprint cartridge 1 surface, prevents thatprint cartridge 1 from coming off.

As shown in Figure 4,, make the ink in theink storage chamber 4 can stably flow to printer, also be provided with the print cartridge pressure controller in theink storage chamber 4 in order to controlprint cartridge 1 pressure inside.This print cartridge comprises with pressure controller: covering andchamber part 8, wherein, the covering (not shown) can be a lid made of plastic, also can be a film, preferably, in the present embodiment, covering is a film, and this film covers and is cemented inchamber part 8 tops, thereby makes formation one confined space between film and thechamber part 8.

Shown in Fig. 3 and Fig. 4 a and 4b,chamber part 8 comprises:inlet 13 flows, be used for the ink guiding ofink storage chamber 4 is entered the print cartridge pressure controller, and theinlet 13 that flows is arranged to be connected with the bottom ofink storage chamber 4, then work asprint cartridge 1 and use the later stage, small volume of ink in theink storage chamber 4 also can flow out fully, makes thatwhole print cartridge 1 can be maximally utilised, and saves user's use cost;Flowing exports 14, and being used for derives the print cartridge pressure controller with the ink ofink storage chamber 4, and the back that is described in of its position is described; Valve system is used to adjustchamber part 8 pressure inside, and it comprises:valve pocket 83, valve seat 84,spool 85, ink entry 81 and ink outlet 82.Shown in Fig. 4 a, the center of valve seat 84 is provided with athrough hole 842, is provided withseveral valve openings 841 on every side; Andspool 85 is made by elastomeric material, compriseround plate 851 andstem 852, wherein, the external diameter ofround plate 851 is greater than the external diameter of above-mentionedseveral valve openings 841, be that it can cover above-mentionedvalve opening 841, andround plate 851 can seal or departs fromvalve opening 841 to close or to open the ink flow path of its both sides according to the pressure differential of its both sides, the diameter ofstem 852 is suitable with above-mentioned throughhole 842, is equivalent to byround plate 851 is fixed on the valve seat 84 tocover valve opening 841; Andink outlet 82, be used for and derive outside from the ink that valve system flows out, shown in Fig. 4 b, insert in theprint cartridge 1 with pressure controller andprint cartridge 1 when bringing into use at print cartridge,ink outlet 82 is arranged on the position of the peak of gravity directionuuper valve chamber 83, more particularly,ink outlet 82 is positioned at the top ofround plate 851 peaks on the gravity direction, so that ink must be full of and could export 82 from ink behind thewhole valve pocket 83 and outwards flow out.From said structure, if withround plate 851 as a cut-point, thenvalve pocket 83 can be divided into ink storage chamber side and ink outlet port side, both sides cover byround plate 851 or break away from above-mentionedseveral valve openings 841 and communicate with each other or disconnect, and promptlyround plate 851 seal or open above-mentionedvalve opening 841 to disconnect or connection ink storage chamber side and ink outlet port side under the pressure differential effect of both sides.

In addition, as shown in Figure 5, in the above-mentioned valve system, makeround plate 851 that bigger distortion takes place for the pressure that prevents ink storage chamber side and ink outlet port side is excessive and drivestem 852 and finally break away from throughholes 842, preferably, in the present embodiment, onstem 852, be provided with therestriction portion 853 of a ring-type, and diameter that shouldrestriction portion 853 is greater than the diameter of throughhole 842, therefore, in be under pressure difference effect and behind the certain distance that moves up ofstem 852,restriction portion 853 surfaces and throughhole 842 wall butt on every side,restriction stem 852 continues to move upward, at this moment,round plate 851 has departed fromvalve opening 841, and ink flow path is opened.Distance betweenrestriction portion 853 and theround plate 851 can limit according to the different conditions such as pressure differential of both sides, not in discussion scope of the present utility model.

In addition, on the ink flow path betweenink entry 82 and thevalve pocket 83, also be provided with a filter screen, be used to filter the impurity and the bubble of the ink that enterschamber part 8, prevent that impurity or bubble are delivered to via ink in the printhead of printer and cause spray nozzle clogging or print broken string.

Fig. 6 a and Fig. 6 b are the ink flow regime schematic diagram of above-mentioned print cartridge with pressure controller, i.e. ink flow regime schematic diagram between the ink storage chamber side of valve system and the ink outlet port side.Shown in Fig. 6 a, whenprint cartridge 1 is not brought into use, the ink storage chamber side ofvalve system 8 and the pressure balance between the ink outlet port side,round plate 851 can cover on above-mentionedseveral valve openings 841, the ink flow path between the closed on both sides.Shown in Fig. 6 b, whenprint cartridge 1 begins to print action, the air guide film of gas port 6 tops is torn, be that gas port 6 is communicated with outside atmosphere, meanwhile, near theink outlet port 5 ink is consumed, then there is certain pressure reduction between ink storage chamber side and the ink outlet port side, consumption along with ink, pressure reduction is increasing, and when it was increased to predetermined value, theround plate 851 of above-mentionedspool 85 elastic deformation took place and departs fromvalve opening 841, promptly make the ink storage chamber side be communicated with flow channel between the ink outlet port side, ink flows to the ink outlet port side from the ink storage chamber side viavalve opening 842, and is supplemented toink outlet port 5 and continues to be supplied to printhead viaink outlet 82 from the ink outlet port side, and, this moment, outside atmosphere can be supplemented in theink storage chamber 4, maintained in the constant scope to keep the pressure in the ink storage chamber 4.This action is carried out repeatedly, tillink storage chamber 4 ink inside are exhausted.Obviously, adopt above-mentioned print cartridge pressure controller, valve system especially wherein can be controlled the stable ink magnitude of recruitment, make the pressure in theink storage chamber 4 be in more constant state, when guarantee printing to a great extent ink can continue, toward print head stably.

By foregoing description as can be known, finish and when not using,whole print cartridge 1 all is to be full of ink, then also is full of ink in thevalve pocket 83 naturallyprint cartridge 1 manufacturing; Whenprint cartridge 1 used, becauseink outlet 82 is arranged on the peak place of gravity direction uuper valve chamber, Jimo water out 82 was to be higher thanspool 85 peaks and to be provided with at this moment, and then no matter how how ink outwards flows, and be full of ink in the total energyassurance valve pocket 83; Promptly,, be consumed up to ink always ink can be full ofvalve pocket 83 no matter be whenprint cartridge 1 uses or when not using.Therefore,round plate 851 owing to manufacturing tolerance can't and the peripheral wall surface of valve seat 84 fit tightly and make and have the slit betweenround plate 851 and valve seat 84 walls, communicate with each other thereby cause between ink storage chamber side and the ink outlet port side, during ON/OFF that can't be by pressure differential and control valve mechanism, adopt said structure, can utilize the ink in the above-mentioned valve pocket 84 surface tension effects and with above-mentioned gap sealing, make and separate mutually between ink storage chamber side and the ink outlet port side, when having only between the two pressure differential to reach predetermined value, just can communicate with each other and ink is flowed.Obviously,ink outlet 82 is arranged on the position at peak place of gravity direction uuper valve chamber, could guarantee that ink always is full of whole valve system, thereby the regular event of assurance valve is stably supplied ink to printhead.

Usually, print cartridge is assemblied in the print cartridge by first detent mechanism and second detent mechanism with pressure controller, wherein, and as shown in Figure 3, first detent mechanism is arranged on print cartridge with on the direction of insertion of pressure controller, so that print cartridge is fixing on its direction of insertion with pressure controller.In the present embodiment, preferably, first detent mechanism is thewedge 86 that is arranged on the sidewall ofchamber part 8, when print cartridge insertsprint cartridge 1 with pressure controller, above-mentionedwedge 86 matches with draw-ingroove 41 on the rib that is arranged onink storage chamber 4, and print cartridge is fixed on its direction of insertion with pressure controller.Second detent mechanism be arranged on print cartridge with on the perpendicular direction of the direction of insertion of pressure controller, so that print cartridge is fixing on above-mentioned vertical direction with pressure controller.In the present embodiment, preferably, second detent mechanism is to be arranged on the hollow circuit cylinder of outwards giving prominence on the diapire ofchamber part 8 87, and be provided with acylindrical portion 88 in the middle of the above-mentioned hollow circuit cylinder 87, this hollow circuit cylinder 87 andcylindrical portion 88 cooperate with holdingink container 1 with theprojection 51 that is arranged onink outlet port 5 tops, wherein, the internal diameter of the external diameter ofcylindrical portion 88 andprojection 51 is suitable, the internal diameter of the external diameter ofprojection 51 andcylinder 86 is suitable, then when print cartridge insertsprint cartridge 1 with pressure controller,projection 51 is clamped between cylinder 87 and thecylindrical portion 88, thereby stably print cartridge is fixed on its vertical direction with pressure controller.In addition, the medial surface of hollow circuit cylinder 87 is provided with certain tapering, is used to guide above-mentionedprojection 51 to be mated, and has the effect that an error absorbs, even there is manufacturing tolerance in promptly above-mentionedprojection 51, it can be directed packing into equally.

Significantly, say from three dimensions, print cartridge is equivalent to the Z axle with the direction of insertion of pressure controller, vertical direction then is equivalent to the XY plane, by foregoing description as can be known, print cartridge all is fixed at Z axle and XY plane with pressure controller, represent that it can not be moved in X, Y, three directions of Z, therefore, no matter which kind of weldingmanner box body 2 adopts withcover 3, as Vibration Welding etc., the vibration that is brought can not make print cartridge with pressure controller skew or displacement take place, and guarantees the good connected mode between itself and theprint cartridge 1.

Shown in Fig. 4 a, themobile outlet 14 ofchamber part 8 is arranged on the above-mentionedcylindrical portion 88, promptly can be delivered to theink outlet port 5 via theoutlet 14 of flowing with the ink that pressure controller flows out from print cartridge, and so setting can be simplifiedprint cartridge 1 structure.

Obviously; from foregoing description as can be known; print cartridge is to separate product with pressure controller withprint cartridge 1; be that the print cartridge pressure controller is independent product; it can be made into a universal standard part; removably be assemblied on the print cartridge of different model; Figure 7 shows that the structural representation that print cartridge is used for another model print cartridge with pressure controller; obviously, adopt above-mentioned split type print cartridge pressure controller, can reduce manufacturing cost; and when carrying out the print cartridge recovery; even the outside of print cartridge is damaged, reclaim after it is also detachable, help environmental protection.

Those of ordinary skill in the art is interpreted as, and above-mentioned first detent mechanism and second detent mechanism also can be arranged on protuberance or the recess onchamber part 8 sidewalls, cooperates and gets final product respectively at being arranged near the printhead associated components.Above embodiment only is used to illustrate the technical solution of the utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model design; can also make some distortion and improvement, these all belong in the protection domain of the present utility model.

Claims (8)

1. a print cartridge pressure controller is removably mounted on the print cartridge, comprising:

Covering;

Chamber part forms sealed cavity with described covering, and described chamber part comprises that one regulates the valve system of chamber part pressure, and described valve system comprises:

Valve pocket;

Direct ink enters the ink entry of described valve system;

Direct ink is left the ink outlet of described valve system;

Be provided with the valve seat of at least one valve opening;

Change and optionally seal or leave the spool of described valve opening according to the pressure of its both sides;

It is characterized in that: the position of the outlet of described ink is arranged on described print cartridge when using with pressure controller the above valve pocket peak of gravity direction.

2. print cartridge pressure controller as claimed in claim 1 is characterized in that described spool comprises round plate and stem, and wherein, described stem is connected with described round plate, and described round plate changes according to the pressure of its both sides and seals or depart from described valve opening.

3. print cartridge pressure controller as claimed in claim 1 is characterized in that, described print cartridge pressure controller is independent product.

4. print cartridge pressure controller as claimed in claim 3 is characterized in that, described print cartridge enters the mobile inlet of described chamber part and the mobile outlet that direct ink enters described chamber part with also being provided with direct ink in the pressure controller.

5. print cartridge pressure controller as claimed in claim 4 is characterized in that described valve system also comprises a filter screen, and described filter screen is arranged on the stream between described mobile inlet and the described valve system.

6. print cartridge pressure controller as claimed in claim 1 is characterized in that, described print cartridge also is provided with one with pressure controller and is positioned at first detent mechanism that it inserts the direction of insertion of print cartridge, and is positioned at second detent mechanism with the perpendicular direction of direction of insertion.

7. print cartridge pressure controller as claimed in claim 6 is characterized in that, described first detent mechanism is a wedge, and second detent mechanism is a hollow circuit cylinder and the cylindrical portion that is arranged on hollow circuit cylinder.

8. print cartridge, be removably mounted in the inkjet-printing device, comprise the ink storage chamber that is used for storing the ink that is supplied to inkjet-printing device and be used for the ink transport of ink storage chamber ink outlet port to inkjet-printing device, it is characterized in that, also be provided with described arbitrary print cartridge pressure controller in the described ink storage chamber as claim 1-7.

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