CN200995519Y

CN200995519Y - Ink box

Info

Publication number: CN200995519Y
Application number: CN 200620060795
Authority: CN
Inventors: 胡诚
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Print Rite Technology Development Co Ltd of Zhuhai
Priority date: 2006-06-21
Filing date: 2006-06-21
Publication date: 2007-12-26
Anticipated expiration: 2016-06-21

Abstract

An ink box includes a box, an ink storage cavity arranged in the box, an ink output arranged on one wall of the box, a liquid channel communicating the ink storage cavity and the ink output, a differential pressure valve arranged in the liquid channel and used to make the ink in the ink storage cavity flow to the ink output, an ink supply cavity arranged between the output of the differential pressure valve and the ink output, and an elastic component with smaller threshold of elastic deformation than starting threshold of the differential pressure valve; the ink box is characterized in that the elastic component is a part of the wall of the ink supply cavity and can separate the ink storage cavity and the ink supply cavity.

Description

Print cartridge

Technical field

The utility model relates to a kind of print cartridge that is used on the ink-jet printer.

Background technology

The print cartridge that the common use of ink-jet printer can separate with printer comes to printer ink-providing, print cartridge has a black chamber that holds ink usually, a pore that is communicated with black chamber and atmosphere, also has the ink outlet port that ink is provided to printer, when print cartridge was packed printer into, ink outlet port was docked by the China ink mouth hermetically with printer.

The application of CN1572508A Chinese invention patent discloses a kind of print cartridge, and it comprises the ink resettlement section that holds ink, to the ink supply port of printer ink-providing, is installed on the check valve in the ink flow path between ink resettlement section and the ink supply port.When printer prints, consumption along with the ink supply port ink inside, pressure in the ink supply port diminishes, and the pressure in the ink supply port is less than the pressure in the ink resettlement section, because pressure imbalance, check valve deforms, open ink flow path, ink flows to ink supply port from the ink resettlement section via check valve, reaches balance again until the ink supply port internal pressure, closed check valve, ink stop to flow.Simultaneously, this print cartridge also comprises the buffer gear that is located between ink supply port and the check valve, and buffer gear has than the check valve flexure member of easy deformation more.When printer prints, because flexure member is than the easier generation deformation of check valve, can utilize the elastic restoring force of flexure member in aforementioned ink flow path, to produce pressure, all the time give pressure stable to the printing record head that is connected in ink supply port, realize the stable discharge of ink, have print quality preferably.But, reason owing to one-way valve structures, flowing of ink only has one-way in the print cartridge, when print cartridge is installed to printer, because the insertion of print needle, the ink supply port pressure inside increases, and excessive pressure can cause the ink supply port pressure inside to get rid of, ink will break through with the joint that is subjected to the China ink mouth from supply port and seal and pass in and out, and produce unnecessary black phenomenon.

Summary of the invention

The purpose of this utility model provides a kind of release effectively and stablizes ink supply to printer, guarantees the print cartridge of print quality.

For achieving the above object, the print cartridge that the utility model provides, comprise: box body, be arranged on the ink storage chamber that holds ink in the box body, be arranged on the ink outlet port on wall of box body, and the fluid passage of connection ink storage chamber and ink outlet port, be provided with the valve for pressure difference that the interior ink of control ink storage chamber flows to ink outlet port in the fluid passage, form the ink supply chamber between valve for pressure difference outlet and ink outlet port, one the elastically-deformable threshold value elastic component littler than the unlatching threshold value of valve for pressure difference takes place, described elastic component constitutes the part for ink cavity wall, and separates ink storage chamber and ink supply chamber.

According to the technical solution of the utility model, by between ink outlet port and valve for pressure difference structure, be provided with can bidirectional elastic deformation the elasticity pressure adjusting structure, the residing position of this pressure adjusting structure can be communicated with ink storage chamber and ink supply chamber respectively, and has the not characteristic of saturated with liquid and gas, when the pressure imbalance of described pressure adjusting structure both sides, pressure adjusting structure can change the generation elastic deformation according to pressure, effectively regulates the volume in the ink supply chamber.Compare with previous technology, when the utility model print cartridge inserts ink outlet port at print needle, effectively release, avoid dripping black phenomenon, and when consumption of ink, the negative pressure variation in the elastic-restoring force control ink supply chamber of dependence pressure adjusting structure, guarantee the continuity of ink supply, guarantee print quality.

Description of drawings

Fig. 1 is the STRUCTURE DECOMPOSITION figure of most preferred embodiment;

Fig. 2 removes the plane of cover for most preferred embodiment;

Fig. 3 is the STRUCTURE DECOMPOSITION figure of most preferred embodiment other direction;

Fig. 4 is the stereogram of most preferred embodiment box body other direction;

Fig. 5 is the cutaway view of most preferred embodiment assembling finishing back along A-A among Fig. 2;

Fig. 6 is the B partial enlarged view of Fig. 5;

Fig. 7 is the B partial enlarged view of another embodiment.

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

The specific embodiment

With reference to Fig. 1, print cartridge comprises box body 1, in order to the cover 2 of enclosed box body 1, to the ink outlet port 3 of printer ink-providing, is located at filling China ink hole 4a, the aspirating hole 4b on the box body 1 respectively and seals the plug of irritating black hole 4a and aspirating hole 4b.Box body 1 surrounds (ginseng Fig. 4) by upper wall, lower wall, two side and rear wall 10, be provided with ink storage chamber 11 in it in order to hold ink, also be provided with the

spongocoel

12,13 of placing leakproof sponge (not label) in the box body 1, ink supply chamber 14 flows to the fluid passage of ink outlet port 3 from valve for pressure difference 5 outlets for ink.

To shown in Figure 4, print cartridge also comprises the heat-sealing film 8 of pressure adjusting structure and sealing print cartridge with reference to Fig. 2.The rear wall 10 of box body 1 is provided with the airway 15 of one section bending, and the two ends of airway 15 respectively are provided with the passage 150,151 that connects box body rear wall 10, and wherein passage 150 is connected with spongocoel 12.Simultaneously, also be provided with a passage 152 that connects box body rear wall 10 at spongocoel 13 places.

Aforementioned pressure adjusting structure is an elastic component, and in the present embodiment, this elastic component is a pressure regulator membrane 60.On the rear wall 10 of box body 1, be provided with the pressure regulating cavity 16 that holds aforementioned pressure adjusting structure, described pressure regulating cavity 16 from box body rear wall 10 to ink storage chamber 11 sunken insides, be the cavity on the rear wall of box body, pressure regulating cavity 16 cavitys roughly become cylindricality, be provided with criss-cross flank 160 in the bottom of cylinder, by this flank 160 pressure regulating cavity 14 and ink storage chamber 11 are separated, the interval 163 that pressure regulating cavity 16 sees through 160 of flanks is connected with ink storage chamber 11.When negative pressure was irritated China ink, described flank 160 can prevent pressure regulator membrane 60 excessive deformation and damaging under negative pressure state.In the present embodiment, pressure regulating cavity 16 is a circular cylindrical cavity, accordingly, pressure regulator membrane 60 also is a circular membrane, pressure regulator membrane 60 can be made by rubber, plastics or other elastomeric material, it has the characteristic of impenetrable liquid and airtight body, and pressure regulator membrane 60 can two-wayly carry out elastic deformation, causes that the unlatching threshold value that elastically-deformable pressure threshold is less than valve for pressure difference takes place pressure regulator membrane 60.Be provided with the mounting groove 161 of an annular in the pressure regulating cavity 16, in order to pressure regulator membrane 60 to be installed.Accordingly, pressure regulator membrane 60 peripheries also are provided with the lug boss 600 of annular, can match with the mounting groove 161 of pressure regulating cavity 16.Pressure regulator membrane gland 61 comprises base portion 610, is provided with an annular compressed part 611 from base portion 610 to outer lug, is provided with rectangular through-hole 612 on base portion 610.Simultaneously, on rear wall 10, be provided with one and connect the passage 162 in pressure regulating cavity 16 and ink supply chamber 14 and the ink channel 7 that is communicated with ink storage chamber 11 and ink supply chamber 14.

With reference to Fig. 5 and Fig. 6, after the print cartridge assembling is finished, cover 2 is with box body 1 sealing, heat-sealing film 8 seals the airway on the box body rear wall 10 15, ink channel 7 respectively and pressure regulator membrane gland 61 further is fixedly installed in pressure regulating cavity 16 places, irritate black hole 4a, aspirating hole 4b and also sealed by plug, whole print cartridge forms an enclosure space.Valve for pressure difference 5 one sides that are positioned in the valve pocket 140 are communicated with the ink outlet port 3 of print cartridge, and opposite side is communicated with ink storage chamber 11 by ink channel 7.Pressure regulator membrane 60 is installed in the pressure regulating cavity 16 on the box body rear wall 10, the annular relief 600 of pressure regulator membrane 60 is placed in the annular mounting groove 161 of pressure regulating cavity 16, during installation, pressure regulator membrane gland 61 is fitted in the pressure regulating cavity 16, the compressed part 611 of pressure regulator membrane gland 61 is compressing pressure regulator membrane 60, further the annular relief 600 with pressure regulator membrane 60 is fixed in the annular mounting groove 161, and heat-sealing film 8 is one side closed and pressure regulator membrane gland 61 is fixed in pressure regulating cavity 16 places with the rectangular through-hole 612 of pressure regulator membrane gland 61 more then.One side of pressure regulator membrane 60 communicates with ink storage chamber 11, and opposite side communicates with ink supply chamber 14 by rectangular through-hole on the pressure regulator membrane gland 61 612 and passage 162.

Print cartridge in use, because heat-sealing film 8 is with airway 15 sealings, ambient atmos can enter in the box body 1 from passage 152, through the leakproof sponge, enter airway 15 from passage 151, enter ink storage chamber 11 from passage 150 again, keep ink storage chamber 11 and extraneous conducting, make box body internal gas pressure balance.When filling ink in the print cartridge, because pressure regulating cavity 16 communicates with ink storage chamber 11 and ink supply chamber 14, the common meeting in the both sides of pressure regulator membrane 60 is covered around it by ink.During printing, the ink in the ink outlet port 3 is consumed, when pressure differential reaches the thresholding of opening valve for pressure difference 5, valve for pressure difference 5 is opened, and the ink in the ink storage chamber 11 enters in the ink supply chamber 14 from described ink channel 7 valve for pressure difference 5 of flowing through again, when pressure balance, valve for pressure difference 5 is closed, and ink stops to flow.

When being installed to print cartridge on the printer, because print needle is inserted in the ink outlet port 3, effective volume diminishes in the ink supply chamber 14, internal pressure increases, pressure in the pressure regulating cavity 16 also and then increases, the pressure that pressure regulator membrane 60 is communicated with ink supply chamber 14 1 sides is greater than the pressure that is communicated with ink storage chamber 11 1 sides, change so elasticity takes place pressure regulator membrane 60, pressure regulator membrane 60 is protruding in ink storage chamber 11, effective volume in the ink supply chamber 14 increases thus, and the pressure in the ink supply chamber 14 obtains discharging, and pressure reduces, reach the effect of release, prevent that with this pressure from crossing ambassador's ink and oozing from ink outlet port 3.And when printing, because the consumption of ink, pressure in the ink supply chamber 14 reduces, when not reaching the pressure thresholding of opening valve for pressure difference 5 by the caused pressure differential of consumption of ink, because the unlatching thresholding that elastically-deformable pressure thresholding is less than valve for pressure difference 5 takes place in pressure regulator membrane 60, therefore elastic deformation takes place earlier in pressure regulator membrane 60, and this moment is because pressure regulator membrane 60 is communicated with the pressure of ink supply chamber 14 1 sides less than the pressure that is communicated with

ink storage chamber

11,60 of pressure regulator membranes are protruding in the direction away from ink storage chamber 11, the effective volume in ink supply chamber 14 is reduced, negative pressure variation in the elastic-restoring force control ink supply chamber 14 of dependence pressure regulator membrane 60, when pressure differential reached the threshold value of opening valve for pressure difference 5, valve for pressure difference 5 was opened, and the ink replenishing in the ink storage chamber 11 is advanced in the ink supply chamber 14, pressure reaches balance again, and valve for pressure difference 5 and pressure regulator membrane 60 all recover original state.Deformation by aforementioned pressure regulator membrane 60 can guarantee that the pressure in the ink supply chamber 14 are in stable state, thus when avoiding consumption of ink because the ink feed that the switching delay of valve for pressure difference 5 causes is not smooth, cause print quality not good.

The pressure regulator membrane gland 61 of the utility model print cartridge also has another kind of embodiment, with reference to shown in Figure 7, pressure regulator membrane gland 61 comprises base portion 610, be provided with an annular compressed part 611 from base portion 610 to outer lug, be provided with rectangular channel 613 on base portion 610, described rectangular channel 613 does not run through the base portion 610 of pressure regulator membrane gland.Rectangular channel 613 on the pressure regulator membrane gland 61 is formed the passage that is communicated with pressure regulating cavity 16 and ink supply chamber 14 with the passage 162 on the box body rear wall.At this moment, gland 61 edges are provided with sealing gasket or other encapsulant, directly gland 61 sealings are pasted on pressure regulating cavity 16 places, then need not to come sealing and fixing pressure regulator membrane gland 61 by heat-sealing film 8 again.

In addition, occur dripping a black phenomenon when avoiding print cartridge to load onto printer better, the utility model print cartridge is stored air in certain amount when can irritate China ink in the ink supply chamber when irritating China ink, when installation, print needle inserts in the storage China ink mouth, and effective volume reduces in the ink supply chamber, and pressure increases, in pressure regulator membrane generation deformation, when regulating in the ink supply chamber effective volume, because the increase of ink supply cavity pressure can be more effectively alleviated in the easier compression of air of storing in the ink supply chamber.And, the utility model print cartridge can also adopt the ink supply chamber of large volume, hold more ink, when moment consumes ink, for example printer is carried out cleaning procedure, and pressure regulator membrane also can be regulated the pressure in the ink supply chamber by elastic deformation, postpone even the valve for pressure difference structure opens and closes, can guarantee that also ink supply is steadily smooth.

Technical conceive of the present utility model is not limited in the foregoing description, can also obtain many different concrete schemes according to design of the present utility model, for example, the shape of pressure regulator membrane, the mode of installing and fixing can change to some extent according to the change of print cartridge structure, all should be included within the described scope of claim such as these changes and equivalent transformation.

Claims

1, print cartridge comprises

Box body;

Be arranged on the ink storage chamber that holds ink in the box body;

Be arranged on the ink outlet port on wall of box body, and be communicated with the fluid passage of ink storage chamber and ink outlet port, be provided with the valve for pressure difference that the interior ink of control ink storage chamber flows to ink outlet port in the fluid passage;

Form the ink supply chamber between valve for pressure difference outlet and ink outlet port;

One the elastically-deformable threshold value elastic component littler than the unlatching threshold value of valve for pressure difference takes place;

It is characterized in that:

Described elastic component constitutes the part for ink cavity wall, and separates ink storage chamber and ink supply chamber.

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

Described elastic component is a pressure regulator membrane.

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

The sidewall of described box body is provided with a cavity, and described pressure regulator membrane is installed in the cavity, and is fixed by the gland that matches with cavity.

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

Be provided with annular in the described cavity groove is installed, described pressure regulator membrane periphery is provided with the projection that matches with groove; Described gland has the hold-down ring that coincide with projection.

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

The sidewall of described box body is provided with a cavity, and described pressure regulator membrane is installed in the cavity, and is fixed by the gland that matches with cavity, and caping is provided with a through hole; Cavity is by a diaphragm seal.