CN1840344A - Liquid container - Google Patents
Liquid container Download PDFInfo
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- CN1840344A CN1840344A CN 200610058479 CN200610058479A CN1840344A CN 1840344 A CN1840344 A CN 1840344A CN 200610058479 CN200610058479 CN 200610058479 CN 200610058479 A CN200610058479 A CN 200610058479A CN 1840344 A CN1840344 A CN 1840344A
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Abstract
A liquid container has an air open passage for causing a liquid chamber to communicate with an outside and introducing outside air into the liquid chamber as liquid in the liquid chamber is consumed, and an air chamber provided in a portion of the air open passage and capable of storing the liquid entering the air open passage. The air open passage includes a lower open passage having one end opened to the liquid chamber at a position close to an internal surface of a bottom wall of the liquid chamber and the other end opened to the air chamber at a position close to an internal surface of a bottom wall of the air chamber, and an upper open passage having one end opened to the air chamber at a position close to an internal surface of a ceiling wall of the air chamber and the other end capable of being opened to the outside.
Description
Technical field
The present invention relates to liquid container, this liquid container comprises the air chamber that can store the liquid in the air open access that enters the container body, and this container body removably is mounted to the container installation portion of device side.
Background technology
The example of liquid container comprises the print cartridge that is used for the inkjet type printer.At the print cartridge that is used for the inkjet type printer, hold the inking chamber that to be provided to the ink of printhead and be arranged in the container body.In use, print cartridge removably assembles and is mounted to the box installation portion of pre-position.The ink that is contained in the inking chamber is provided to driven printhead according to the print data of coming from main frame transmission, and from being arranged on nozzle ejection on the printhead on the target location such as the print media of paper.
The various opening print cartridges of air that are mounted to the inkjet type printer have been proposed, the container body that wherein will removably be mounted to the box installation portion of printer side comprises: the inking chamber that is used to hold ink, be set to be communicated with and can be connected to the ink supply aperture of the ink acceptance division of box installation portion with inking chamber, the air open access that is used for making inking chamber and external communications and when the ink of inking chamber is consumed, extraneous air is introduced inking chamber, and be arranged in the part of air open access and can store the air chamber of the ink that enters the air open access.
Air chamber is set, is used for when the air of inking chamber because the change of environment temperature and ink in thermal expansion and the inking chamber owing to the thermal expansion of air is flow backwards when entering in the air open access, prevent ink leakage.
Be used for preventing that the air chamber of ink leakage need be for example can guarantee also when box tilts that the mode of air being introduced the function of inking chamber is designed in to the link position of air open access.
In addition, guarantee that enough volumes are also extremely important to hold the ink that flows backwards owing to the thermal expansion of the air in the inking chamber, design also needs to guarantee volume thus.
Proposed a kind of print cartridge that comprises air chamber, this air chamber independently is arranged on the lower position of inking chamber outside and introduces the path and be communicated with inking chamber by special air.Have two sidewalls of larger area in the air chamber and form by gas-liquid separation membrane, its allow gas by but liquid is passed through.(for example, seeing patent documentation 1)
Patent documentation 1:JP-A-2004-209847 is open
When ink contacted with the gas-liquid separation membrane of the partition wall that is used as air chamber, the characteristic of passing through of air reduced at the contact area of ink.Therefore, more serious to the gas permeability of inking chamber than what when beginning, reduce.Thus, may hinder the smooth and easy supply of ink to the possibility of the reduction of the gas permeability of inking chamber.
In addition, the gas-liquid separation membrane with relatively large area plays the partition wall on each end of air chamber.Thus, need to adopt supporting construction to become smooth wall with stable support gas-liquid separation membrane.Thus, the increase of the assembly of air chamber causes the deterioration of assembling characteristic and the increase of cost.
In addition, be arranged at air chamber under the situation of printer side, need connect the air open access between printer and the print cartridge airtightly, for example the formation of syndeton has increased cost thus.
Summary of the invention
Be conceived to the problems referred to above and propose the present invention.
According to the explanation non-limiting example, liquid container comprises: the container body, and it removably is mounted to the container installation portion of device side; Fluid chamber, it is arranged in the described container body, is used for receiving fluids therein; The liquid supply orifice, it is communicated with and can be connected to the liquid acceptance division of described device side with described fluid chamber; The air open access, it is used for making described fluid chamber and external communications and when the described liquid of described fluid chamber is consumed extraneous air is introduced in the described fluid chamber; And air chamber, it is arranged in the part of described air open access and can stores the described liquid that enters in the described air open access.Described air open access comprises: low open access, it has an end and the other end, a described end is open into described fluid chamber in the position of the inner surface of the diapire of approaching described fluid chamber, and described the other end is open into described air chamber in the position of the inner surface of the diapire of approaching described air chamber; And higher open access, it has an end and the other end, and a described end is open into described air chamber in the position of the inner surface of the roof of approaching described air chamber, and described the other end can be open into described outside.
According to liquid container with this structure, because causing liquid to flow backwards, the thermal expansion of the air of storaging liquid in fluid chamber wherein enters when hanging down in the open access, the fluid storage of refluence is in the air chamber of the release position that will extend to low open access.Thus, can prevent the leak of liquid that flows backwards.
In addition, in the attitude of putting upside down, the open end that enters in the fluid chamber of low open access projects upwards from liquid level position in fluid chamber.Thus, can not cause refluence, thereby can prevent leak of liquid by low open access.
In addition, the other end of the diapire that can pass air chamber of low open access is open in the position near the inner surface of the diapire of air chamber.Thus, by effect by the negative pressure inhalation power that produces of device consumable liquid, the perhaps effect of the negative pressure inhalation power that produces by thermal contraction by the air in the fluid chamber, the whole liquid that are stored in the air chamber can be back to fluid chamber soon.Even the circulation of thermal expansion and contraction repeats, also can prevent because the liquid of the storage that the remnants of the liquid in the air chamber cause is consumed meaninglessly.
In addition, can form air chamber by the space of separating liquid body cavity.Because do not need to be used for the special construction of the container installation portion of device side, so can simplified structure and configuration.By simplified structure and configuration, can improve assembling performance and reducing cost.
Described the other end of described higher open access can be arranged in the roof side of described fluid chamber or be arranged in the diapire side of described fluid chamber.
In addition, in liquid container, preferably: described the other end of described low open access is arranged in the position near the bight of the described inner surface of the described diapire of described air chamber; A described end of described higher open access is arranged in the position near the bight of the described inner surface of the described roof of described air chamber; And observe on the described diapire direction respect to one another of the described roof of described air chamber and described air chamber, the described bight of the described inner surface of the described roof of described air chamber is the diagonal angle with respect to the described bight of the described inner surface of the described diapire of described air chamber and arranges.
According to liquid container with this structure, for example, when the attitude of being fallen down with side direction when liquid container was placed, if the opening to fluid chamber of low open access sinks in the liquid that is stored in the fluid chamber, then the liquid in the fluid chamber may flow into air chamber along low open access.In the case, because the opening to air chamber of higher open access is positioned at diagonal position with respect to the opening to air chamber that hangs down open access, so the opening to air chamber of higher open access can not contact with the liquid that flows into air chamber, thereby can prevent to flow into the leak of liquid of air chamber.
On the other hand, even liquid container side direction in the opposite direction falls down, because the opening to air chamber of low open access is arranged in the higher spatial of the air chamber on the liquid level that is stored in fluid chamber, so the liquid in the fluid chamber can not flow into air chamber by low open access yet.Thus, in the case, can prevent that also the liquid in the fluid chamber from leaking along the air open access.That is, no matter liquid container is any attitude, can prevent to be stored in the leak of liquid in the fluid chamber.
In addition, in liquid container, preferably described air chamber is arranged in the higher part of described fluid chamber, and the part of the described roof of described fluid chamber is arranged in the plane that described roof was positioned at of described air chamber.
According to liquid container with this structure, be arranged at air chamber under the normal condition of higher part of fluid chamber, the refluence that the air thermal expansion in the fluid chamber is caused enters liquid in low open access and the higher open access and overcomes gravity move up in individual channel.Thus, be difficult to flow backwards, thereby be difficult to leak.The part of the partition wall of air chamber, promptly the roof of air chamber can form the shared wall with at least a portion of the roof of fluid chamber.Thus, can be by simple increase partition wall but not roof defines air chamber.Thus, can easily define air chamber and can reduce cost by the additional structure that minimizing is used for air chamber.
In addition, air chamber is arranged in the higher part of storaging liquid in wherein fluid chamber.Thus, be stored in that liquid in the air chamber can be subjected to the effect of gravity effectively and the effect of the effect of the negative pressure inhalation power that produces by the device consumable liquid and the negative pressure inhalation power that produces by thermal contraction by the air in the fluid chamber.Thus, further help liquid from air chamber fast return fluid chamber.Even the circulation of thermal expansion and contraction repeats, also can prevent because the liquid of the storage that the remnants of the liquid in the air chamber cause is consumed meaninglessly.
In addition, air chamber can be simple structure of container, the other end opening of the low open access that wherein is communicated with fluid chamber and open-ended each other vertically away from layout with of the higher open access of external communications.Can not use gas-liquid separation membrane with the contacted divider wall parts of the liquid that stores.Thus, can prevent gas permeability because the divider wall parts in the liquid-to-air chamber contacts and deterioration.Thus, during using print cartridge, can prevent to the gas permeability deterioration of fluid chamber and can stably guarantee good gas permeability to fluid chamber.Thus, can guarantee the smooth and easy supply of liquid steadily in the long term.
In addition, in liquid container, preferably the volume of described air chamber be equal to or greater than described fluid chamber volume 10% and be equal to or less than described fluid chamber volume 30%.
Consider that the scope of the temperature change of the environment for use that liquid container exposed is provided with the volume of air chamber.At the hypothesis liquid container is to have under the situation about using in the room of good environment (the change scope of temperature for from 10 ℃ to 40 ℃), but the change of allowable temperature be approximately with the volume of the air chamber that prevents leak of liquid fluid chamber total measurement (volume) 10%.At the hypothesis liquid container is under situation about using under the poorest environment (the change scope of temperature for from-30 ℃ to 60 ℃), but the change of allowable temperature be approximately with the volume of the air chamber that prevents leak of liquid fluid chamber total measurement (volume) 30%.Thus, the volume by air chamber in said structure be set to fluid chamber volume 10% to 30%, even when the maximized generation of refluence that temperature change causes, the liquid that also can prevent to flow backward to air chamber overflows and leaks from air chamber.In addition, can avoid the excessive size of air chamber to increase, otherwise it will cause the increase of the overall dimensions of liquid container.
In addition, in liquid container, described the other end of preferred described higher open access is sealed by diaphragm seal.
According to the liquid container with this structure, the air open access is being sealed by diaphragm seal during the user uses liquid container well from making liquid container.Thus, storing and can preventing reliably between the delivery period that liquid from leaking via the air open access, in addition, can prevent that the moisture content of the liquid in the fluid chamber from evaporating via the air open access.Can prevent to produce the defective of curing of causing such as increase etc. owing to the concentration of liquid.
In addition, in liquid container, preferably higher open access is provided with gas-liquid separation membrane, its allow gas by but do not allow liquid to pass through.
According to liquid container with this structure, even exceed predetermined temperature change once in a while and the pressure do not expected further is applied under the situation on the refluence liquid that is filled in the air chamber in temperature change, can prevent leak of liquid by gas-liquid separation membrane, make to have improved to prevent the reliability of leaking.In addition, even remain in the air chamber and the opening to air chamber of higher open access sinks under the state in the liquid that remains in the air chamber at the liquid that the refluence that the thermal expansion that is produced by temperature change causes enters low open access, the liquid container side direction is fallen down, and can prevent from also that liquid from leaking via higher open access and can improve to prevent the reliability of leaking.
In addition, in liquid container, preferably described fluid chamber is divided into first fluid chamber and second fluid chamber with partition wall, connecting path is set is used to make described first fluid chamber and described second fluid chamber to communicate with each other, described connecting path has an end and the other end, a described end is open into described first fluid chamber in the position of the inner surface of the diapire of approaching described first fluid chamber, described the other end is open into described second fluid chamber in the position near the inner surface of the diapire of described second fluid chamber, and one of them of described first fluid chamber and described second fluid chamber is communicated with described air chamber via the described open access that hangs down.
According to liquid container with this structure, if being assigned to one of to make in the win fluid chamber and second fluid chamber in the fluid storage amount of beginning in fluid chamber is full of liquid and the part of another fluid chamber is occupied by liquid well, the leakage that then being used for prevents to flow backwards causes and the volume of the air chamber guaranteed can be determined corresponding to the liquid volume that is stored in another fluid chamber.Compared to the situation that fluid chamber is not divided, can reduce the volume of air chamber and reduce the size of liquid container.
In addition, in liquid container, preferably described first fluid chamber and described second fluid chamber have the volume that roughly equates mutually.
According to liquid container, be used to prevent to leak and the volume of the air chamber guaranteed can be decreased to half that is about under the situation that fluid chamber wherein is not divided with this structure.Thus, owing to reduced the volume of air chamber, so can easily reduce the size of liquid container.
In addition, in liquid container, preferably the internal diameter of described connecting path is configured to hinder passing through of bubble by forming the liquid level concave surface.
According to liquid container with this structure, be assigned to make in the fluid storage amount of beginning in fluid chamber and hang down open access in win fluid chamber and second fluid chamber and be open into its one and have the volume that partly occupies by liquid, and having all (well), another fluid chamber of hermetically enclosed state is filled with the volume of liquid, can prevent that thus bubble from entering another fluid chamber of hermetically enclosed state, the liquid in a fluid chamber that is open into it than low open access is depleted.
In other words, can not produce the surface tension that is caused by the liquid level concave surface if the internal diameter of connecting path is excessive, then bubble can be open into another fluid chamber that liquid in its fluid chamber enter hermetically enclosed state from a fluid chamber before depleted at low open access.The amount of liquid increase of when thermal expansion, flowing backwards thus, make air chamber need with identical volume under the situation that wherein fluid chamber is not divided.But can prevent to produce this defective by said structure.
The thermally-expansible liquid of the air a even advantage of the present invention is in the fluid chamber flows backwards and enters the air open access, and refluence liquid also can be stored in the air chamber and can prevent and leak.
Another advantage of the present invention is that under the situation that is the attitude of putting upside down an end that is open into fluid chamber of low open access can project upwards from liquid level position in fluid chamber.Thus, can not produce refluence, thereby can prevent leak of liquid via low open access.
The other end that another advantage of the present invention is low open access is open in the position near the inner surface of the diapire of air chamber, thus, because the thermal contraction of air in the fluid chamber, the whole liquid that are stored in the air chamber can be back to fluid chamber soon.Even the circulation of thermal expansion and contraction repeats, also can prevent because the liquid of the storage that the remnants of the liquid in the air chamber cause is consumed meaninglessly.
Another advantage of the present invention is and can forms air chamber by the space of separating liquid body cavity that can eliminate the cost that forms air chamber thus increases.
Above-mentioned advantage of the present invention and other advantage with and dependency structure will be by discussing with reference to explanation non-limiting example shown in the drawings.
The application relates to Japanese patent application No. 2005-092470 (applying on March 28th, 2005), theme among 2006-043661 (applying on February 21st, 2006) and the 2006-62782 (applying on March 28th, 2006), this by reference its integral body it is included in here.
Description of drawings
Fig. 1 is a longitdinal cross-section diagram, shows the schematic structure according to the print cartridge of first embodiment of liquid container of the present invention.
Fig. 2 is the sectional view of being got along the line II-II among Fig. 1.
Fig. 3 explanatory shows because the thermal expansion of air, and the black liquid in the print cartridge shown in Figure 1 in the fluid chamber flows backwards and enters in the low open access and be stored in state in the air chamber.
Fig. 4 is a sectional view, show print cartridge wherein shown in Figure 1 and fall down towards a side side direction, and the black liquid in the fluid chamber flows into the state in the air chamber.
Fig. 5 is a sectional view, shows the state when print cartridge shown in Figure 1 fluid chamber China and Mexico liquid when the opposition side side direction is fallen down in Fig. 4.
Fig. 6 is a longitdinal cross-section diagram, shows the schematic structure according to the print cartridge of second embodiment of liquid container of the present invention.
Fig. 7 is a longitdinal cross-section diagram, shows the schematic structure according to the print cartridge of the 3rd embodiment of liquid container of the present invention.
Fig. 8 (a) and 8 (b) are sectional view and plane, show the schematic structure according to the print cartridge of the 4th embodiment of liquid container of the present invention.
Fig. 9 (a) and 9 (b) are sectional view and plane, show the schematic structure according to the print cartridge of the 5th embodiment of liquid container of the present invention.
The specific embodiment
Fig. 1 to Fig. 5 shows the print cartridge according to first embodiment of liquid container of the present invention.Fig. 1 shows the longitdinal cross-section diagram according to the schematic structure of the print cartridge of first embodiment.Fig. 2 is the sectional view of being got along the line II-II among Fig. 1.Fig. 3 explanatory shows because the thermal expansion of air, and the ink in the print cartridge shown in Figure 1 in the fluid chamber flows backwards and enters in the low open access and be stored in state in the air chamber.Fig. 4 is a sectional view, show print cartridge wherein shown in Figure 1 and fall down towards a side side direction, and the ink in the fluid chamber flows into the state in the air chamber.Fig. 5 is a sectional view, shows the state when print cartridge shown in Figure 1 fluid chamber ink inside when the opposition side side direction is fallen down in Fig. 4.
Print cartridge is discussed as the example according to the liquid container of present embodiment, and this print cartridge can be mounted to the box installation portion on the carriage, and this carriage has had the printhead of the liquid injection portion effect of inkjet type printer.
Print cartridge 1 according to the first embodiment of the present invention plays the supply ink to printhead.Print cartridge 1 has container body 3, and it forms profile with cuboid roughly and the container installation portion (box installation portion) that can removably be mounted to printer side.In container body 3, be provided with and be used to hold ink (liquid) 5 in inking chamber (fluid chamber) 7 wherein, the ink supply aperture 9 that is communicated with and can be connected to the ink acceptance division (liquid acceptance division) of printer side with inking chamber 7, when the ink in the inking chamber 75 is consumed, make inking chamber 7 introduce the air open access 11 of inking chamber 7, and also can store the air chamber 13 that refluence enters the ink 5 of air open access 11 in the middle of being arranged on air open access 11 with external communications and with extraneous air.
Usually, the top open portion of ink supply aperture 9 is sealed by diaphragm seal when unused state.When print cartridge 1 was mounted to box installation portion on the carriage that is arranged on printer, diaphragm seal was by the ink supply needle-penetration that is arranged on box installation portion side, thus depressurization and can supply ink.
As mentioned above, in the present embodiment, the part of the roof 7b of inking chamber 7 forms the roof 13b of air chamber 13, and air chamber 13 is to the upper side biasing of inking chamber 7 thus.The volume of air chamber 13 be set to inking chamber 7 overall volume V1 10% to 30%.
Air open access 11 is divided into low open access 15 and higher open access 17.
Low open access 15 has an end 15a and the other end 15b, end 15a is open into inking chamber 7 in the position near the inner surface of the diapire 7a of inking chamber 7, and end 15b is open into air chamber 13 in the position near the inner surface of the diapire 13a of air chamber 13.In the present embodiment, low open access 15 passes the diapire 13a of air chamber 13.The low open access 15 diapire 13a that also can weave throngh.
Higher open access 17 has an end 17a and is open into outside the other end 17b, and end 17a is open into air chamber 13 in the position near the inner surface of the roof 13b of air chamber 13.In the present embodiment, higher open access 17 passes roof 13b, and the other end 17b of higher open access 17 forms the air open bore.The higher open access 17 roof 13b that also can weave throngh.The other end 17b can form the expose portion of groove, and this groove is formed in the container body 3 and by the film that is attached to container body 3 and covers the part part in addition that is exposed.
As shown in Figure 1, opening 15a on each end of low open access 15 and 15b are arranged in the position near the sidewall 7c and the air chamber 13 of inking chamber 7.As shown in Figure 2, the opening 17a that locates in an end of higher open access 17 is positioned at the position near bight 13d, observing from the square-section of air chamber 13, bight 13d is in the diagonal position with respect to the bight 13c of the other end 15b institute opening of low open access 15.
In the present embodiment, the bight 13c of air chamber 13 is overlapping with the sidewall 7c that defines inking chamber 7.
In the present embodiment, the other end of higher open access 17 (air open bore) 17b is as shown in Figure 1 by diaphragm seal 21 sealings.
According to print cartridge 1, ink 5 in being stored in inking chamber 7 is owing to the thermal expansion of air in the inking chamber 7 is flow backwards when entering low open access 15, as shown in Figure 3, the ink 5 of refluence is stored in the ambient air chamber, release position 13 that is defined in low open access 15.Thus, can prevent that the ink 5 that flows backwards from leaking.
When print cartridge 1 when the box installation portion is dismantled, even print cartridge 1 is the attitude of putting upside down, low open access 15 to the open end of inking chamber 7 still the liquid level position from inking chamber 7 project upwards.Thus, can not cause by hanging down the refluence of open access 15.And in the case, can prevent that ink 5 from leaking.
In addition, because the other end 15b of low open access 15 is open in the position near the inner surface of diapire 13a.Thus, the effect of gravity in the effect of the negative pressure inhalation power that produces by thermal contraction and the thermal contraction by air in the inking chamber 7, the whole inks 5 that are stored in the air chamber 13 can be back to inking chamber 7 soon.Even the circulation of thermal expansion and contraction repeats, also can prevent because the ink 5 of the storage that the remnants of the ink 5 in the air chamber 13 cause is consumed meaninglessly.
The effect that is used to make ink be back to inking chamber 7 can more effectively realize, is used for the higher part of storage ink 5 in wherein inking chamber 7 because air chamber 13 is positioned at.And air chamber 13 be arranged on inking chamber 7 than the situation in the lower part under, if the other end 15b of low open access 15 is open in the position near the inner surface of diapire 13a, then can obtain similar advantage.
In addition, air chamber 13 is simple structure of container, opening 17a on opening 15b on wherein low open access 15 and the other end that inking chamber 7 is communicated with and higher open access 17 and end external communications is each other vertically away from layout, and not can with the ink 5 contacted divider wall parts use gas-liquid separation membrane that store.Thus, can prevent gas permeability because ink 5 contacts and deterioration with the divider wall parts of air chamber 13.
Thus, during using print cartridge 1, can prevent to the gas permeability deterioration of inking chamber 7 and can stably guarantee good gas permeability to inking chamber 7.Thus, can guarantee the smooth and easy supply of ink steadily in the long term.
In addition, air chamber 13 is separated in the higher spatial of inking chamber 7, and is different from the existing product that air chamber 13 wherein independently is formed at the outside of inking chamber 7, does not need to be used for the special construction of the container installation portion of device side.Thus, can simplified structure and configuration.By simplified structure and configuration, can improve assembling characteristic and also can reduce cost.
In addition, in the present embodiment, for example, place in attitude that print cartridge 1 is fallen down with side direction and to make the opening 15a of low open access 15 in the inking chamber 7 sink under the situation in the ink 5 that is stored in the inking chamber 7, as shown in Figure 4, the ink 5 in the inking chamber 7 can flow into air chamber 13 along low open access 15.Because be used to make the open-ended 17a of air chamber 13 and the higher open access 17 of external communications to be positioned at diagonal position, so the open-ended 17a of higher open access 17 does not contact with ink 5 in the inflow air chamber 13 with respect to the open-ended 15b of low open access 15.Thus, the ink 5 that can prevent to flow in the air chamber 13 leaks.
On the other hand, opening under the situation of higher spatial that 15a is arranged in the ink 5 that is stored in inking chamber 7 as shown in Figure 5 of low open access 15 in inking chamber 7, even print cartridge 1 falls down with the opposite way side direction as shown in Figure 5, the ink 5 in the inking chamber 7 can not flow in the air chamber 13 by low open access 15 yet.And in the case, can prevent that the ink 5 in the inking chamber 7 from leaking along air open access 11.
Thus, even print cartridge 1 is in any direction the side direction state that falls down, the ink 5 that can prevent to be stored in the inking chamber 7 leaks.
Using print cartridge 1 according to present embodiment to make air chamber 13 be arranged under the normal operating condition of higher part of inking chamber 7, will overcome gravity by individual channel and move up because the thermal expansion of the air in the inking chamber 7 blows back into the ink 5 that hangs down in open access 15 and the higher open access 17.Thus, will be difficult to produce to flow backwards and leak to the outside.
In addition, the roof 13b of inking chamber 7 is generally used for defining air chamber 13.Thus, can come separate air chamber 13 by simple increase partition wall except roof 13b.Thus, separate air chamber 13 simply.Thus, can reduce cost by the supernumerary structure that minimizing is used for air chamber 13.
The coefficient of volume expansion A that obtains when air themperature changes to T2 ℃ by T1 ℃ is represented by following formula [1].
A＝(T2+273)/(T1+273) [1]
When inking chamber 7 was full of ink 5 fully and do not have air in inking chamber 7, even temperature change, the thermal expansion force of air can not work yet.Thus, can not be stored in the refluence of the ink 5 in the inking chamber 7.In inking chamber 7, do not exist under the state of sky of ink 5, even the refluence of ink 5 also can not take place the air thermal expansion in the inking chamber 7.
Under ink 5 and air both were stored in state in the inking chamber 7, the refluence of ink 5 then took place.
Set up following formula [2], wherein the total measurement (volume) of inking chamber 7 is expressed as V1, and the volume of air that remains in the inking chamber 7 is expressed as V2, and the volume that is stored in the ink 5 in the inking chamber 7 is expressed as V3.
V1＝V2+V3 [2]
The amount of ink 5 that flows backward to air chamber 13 for maximum, promptly makes the total amount (V3) that is stored in the ink 5 in the inking chamber 7 flow backward to air chamber 13 fully because thermal expansion remains in the total measurement (volume) V1 that air in the inking chamber 7 is expanded to inking chamber 7 under following situation.Set up following formula [3].
V2×A＝V1 [3]
Can obtain following formula by formula [2] and [3].
V3＝(A-1)/(A×V1) [4]
When the volume of air chamber 13 is set to greater than V3, can prevent reliably that the ink 5 that flows backwards from leaking.But, thereby the excessive space that stays meaningless sky in air chamber 13 of possible this volume causes the size of print cartridge 1 to increase.On the other hand, if the volume of air chamber 13 is set to less than V3, when then reaching maximum when flowing backwards, ink 5 may leak out air chamber 13.Thus, best is that the volume of air chamber 13 is set to V3.
Thus, when the maximum volume V3 that is provided with for air chamber 13 is shown B to the ratio table of the total measurement (volume) V1 of inking chamber 7, set up following formula.
B＝V3/V1 [5]
If with formula [4] substitution formula [5], then set up following formula.
B＝(A-1)/A [6]
Thus, the change of inking chamber 7 employed environment temperatures is set up and the coefficient of volume expansion A of temperature change obtains and substitution formula [6] from formula [1], can obtain the V/V B of air chamber 13 thus, but the change of these air chamber 13 allowable temperatures also can prevent the leakage of ink 5.
The scope of the temperature change of environment for use wherein that print cartridge 1 is exposed to for example is provided with in three kinds of following modes.
First temperature conditions is assumed to be situation about using in having the room of good environment, the change scope of temperature is from 10 ℃ to 40 ℃.
The worst condition of the environment that does not provide is provided second temperature conditions, and the change scope of temperature for example is from-30 ℃ to 60 ℃.
The 3rd temperature conditions is assumed to be the intermediate range between first temperature conditions and second temperature conditions, and the change scope of temperature is from-20 ℃ to 40 ℃.
With T1=40 and T2=10 substitution formula [1], the coefficient of volume expansion A under first temperature conditions equals 1.1060 thus.At this moment, the V/V B that obtains air chamber 13 from formula [6] equals 0.0958.Be approximately by the volume that air chamber 13 is set under the uniform temp condition inking chamber 7 total measurement (volume) 10%, thus, can obtain not produce the best print cartridge 1 of leakage.
On the other hand, with T1=60 and T2=-30 substitution formula [1], the coefficient of volume expansion A under second temperature conditions equals 1.3704 thus.At this moment, the V/V B that obtains air chamber 13 from formula [6] equals 0.2703.Be approximately by the volume that air chamber 13 is set under the uniform temp condition inking chamber 7 total measurement (volume) 30%, thus, can obtain not produce the best print cartridge 1 of leakage.
Can suppose that change scope that print cartridge 1 is exposed to the temperature in the normal environment for use is between the situation of the situation of first temperature conditions and second temperature conditions.
If be set to usually as the volume of the air chamber 13 described in the present embodiment inking chamber 7 volume 10% to 30%, the ink 5 that then can prevent to flow backward to air chamber 13 thus overflows and leaks from air chamber 13, and in addition, when the change owing to temperature produced maximum refluence, the size that also can prevent print cartridge 1 was owing to the excessive expansion of air chamber 13 increases.
Under the 3rd temperature conditions, the V/V of preferably determining air chamber 13 overflows from air chamber 13 with the ink 5 that prevents to flow backwards.With T1=40 and T2=-20 substitution formula [1], the coefficient of volume expansion A under the 3rd temperature conditions equals 1.3704 thus.At this moment, the V/V B that obtains air chamber 13 from formula [6] equals 0.1917.Be approximately by the volume that air chamber 13 is set under the uniform temp condition inking chamber 7 total measurement (volume) 20%, thus, can obtain not produce the best print cartridge 1 of leakage.
In addition, for print cartridge 1, air open access 11 is sealed admirably by diaphragm seal 21 during print cartridge 1 is made then by the initial use of user.Thus, can prevent reliably between storage and delivery period that ink 5 from leaking the clearancen air to open and putting path 11, and in addition, the moisture content that can also prevent the ink 5 in the inking chamber 7 is by 11 evaporations of air open access.Thus, can prevent to produce such as the shortcoming that causes because of increasing of the concentration of ink 5 solidifying.
In use in order to remove diaphragm seal 21, what can expect is to propose to peel off and to remove the method for diaphragm seal 21 by the user artificially before the container installation portion that print cartridge 1 is mounted to device, and provides sealing to remove the method for the diaphragm seal 21 on the container installation portion side that pin is used for breaking plant.
Fig. 6 is a longitdinal cross-section diagram, shows the schematic structure according to the print cartridge of second embodiment of liquid container of the present invention.
In print cartridge 23 according to second embodiment, allow gas by but the gas-liquid separation membrane 25 that do not allow ink 5 to pass through is arranged on according in the higher open access 17 in the print cartridge 1 of first embodiment and identical among other structure and first embodiment.The same structure that has identical or respective design with structure among first embodiment reaches in the drawings in the description and will simplify or save.
By this structure, even further be applied under the situation of the refluence ink 5 that is filled in the air chamber 13 at the change of temperature scope and pressure greater than the temperature change of hypothesis, can prevent that ink 5 from leaking by gas-liquid separation membrane 25, can improve preventing the reliability of leaking thus.
In addition, even the ink 5 that enters low open access 15 remains in the air chamber 13 because the thermal expansion that the change of temperature causes causes flowing backwards, and print cartridge 1 side direction is fallen down under this state, make that the opening of higher open access 17 sinks in the ink 5 that remains in the air chamber 13 in the air chamber 13, can prevent that also ink 5 from leaking out higher open access 17, make to prevent that the reliability of leaking from improving.
Fig. 7 is a longitdinal cross-section diagram, shows the schematic structure according to the print cartridge of the 3rd embodiment of liquid container of the present invention.
In print cartridge 31,, be divided into first inking chamber 71 and second inking chamber 72 according to the inking chamber 7 in the print cartridge 1 of first embodiment by the partition wall 32 of in the vertical direction extension with the inside of separation inking chamber 7 according to the 3rd embodiment.Print cartridge 31 also has connecting path 33 and is used to make win inking chamber 71 and second inking chamber 72 to communicate with each other in the position near the diapire of first inking chamber 71 and second inking chamber 72.More specifically, connecting path 33 has an end 33a and the other end 33b, this end 33a is open into first inking chamber 71 in the position near the inner surface of the diapire 71a of first inking chamber 71, and this other end 33b is open into second inking chamber 72 in the position near the inner surface of the diapire 72a of second inking chamber 72.Second inking chamber 72 that more approaches sidewall 7c location than first inking chamber 71 is communicated with air chamber 13 by low open access 15.First inking chamber 71 is communicated with ink supply aperture 9.Other structure, such as the position of the open end of low open access 15 that constitutes air open access 11 and higher open access 17, and the shape of air chamber 13 and position can be basically the same as those in the first embodiment.
In the 3rd embodiment, the size of partition wall 32 and position are provided so that the volume of first inking chamber 71 and second inking chamber 72 is roughly the same each other.
In addition, in the 3rd embodiment, connecting path 33 has and is provided for hindering the internal diameter that bubble passes through by forming the liquid level concave surface.
In print cartridge 31 according to above-mentioned the 3rd embodiment, as shown in Figure 7, if be provided so that first inking chamber 71 is full of well and the part of second inking chamber 72 is occupied by ink 5 in the ink storage capacity of beginning in each inking chamber 71 and 72, then be fully: the volume that is used for preventing the air chamber 13 guaranteed because of the leakage that refluence causes is determined corresponding to the ink 5 that is stored in second inking chamber 72.That is, the amount that can only consider the ink that stores in the volume, second inking chamber 72 of second inking chamber 72 waits the volume that air chamber 13 is set.Compared to the situation that inking chamber is not divided, can reduce the size of print cartridge 31 by the volume that reduces air chamber 13.
First inking chamber 71 that obtains by division and second inking chamber 72 communicate with each other via connecting path 33 in the position near the diapire of first inking chamber 71 and second inking chamber 72.That is, connecting path 33 plays communicating pipe.Because ink supply aperture 9 is arranged on the diapire of first inking chamber 71 that is communicated with second inking chamber 72 by connecting path 33, thus the ink 5 that stores can be supplied to the outside via ink supply aperture 9 all.That is, this kind setting has been eliminated the ink 5 that partly stores and is not used and is left in the inking chamber 7 and does not flow to the possibility of ink supply aperture 9.
If the volume of first inking chamber 71 and second inking chamber 72 is set to each other about equally in print cartridge 31, then be used to prevent to leak and the volume of the air chamber 13 that need guarantee can be decreased to half that is about under the situation that inking chamber 7 wherein is not divided.Thus, owing to reduced the volume of air chamber 13, so can easily reduce the size of print cartridge 31.
In the present embodiment, in print cartridge 31, the internal diameter of connecting path 33 is set to utilize the surface tension of liquid level concave surface.In addition, the amount of the ink 5 that stores in each inking chamber 71 and 72 in beginning is provided so that second inking chamber 72 has the volume that occupied by ink 5 parts and first inking chamber 71 of hermetically enclosed state has the total measurement (volume) that is filled with ink 5 well in a side of low open access 15 openings.Thus, can prevent that bubble from entering first inking chamber 71 of hermetically enclosed state, the ink 5 in second inking chamber 72 that is open into it than low open access 15 is depleted.
More specifically, can not produce the surface tension of liquid level concave surface if the internal diameter of connecting path 33 is excessive, then bubble can enter first inking chamber 71 from second inking chamber, 72 sides before the ink in second inking chamber 72 5 is depleted.Thus, the quantity of ink that when thermal expansion, flows backwards increase and air chamber 13 need with identical volume under the situation that wherein inking chamber 7 is not divided.But,, can prevent to produce this defective according to the 3rd embodiment.
Fig. 8 (a) and 8 (b) show the schematic structure according to the print cartridge 41 of the 4th embodiment of liquid container of the present invention.Fig. 8 (a) is the sectional view of print cartridge, and Fig. 8 (b) is the plane from the print cartridge of observing with respect to the direction of the cross-wise direction of Fig. 8 (a).
The shape by the higher open access in the print cartridge 1 that changes first embodiment and the position of air open bore obtain the print cartridge 41 of the 4th embodiment.Other structure of the 4th embodiment is basically the same as those in the first embodiment.
Shown in Fig. 8 (a) and 8 (b), higher open access 87 among the 4th embodiment has an open-ended 87a, its be open into air chamber 13 in position near the inner surface of the roof 13b of air chamber 13 and on the thickness direction of print cartridge 41 direction of the paper of Fig. 8 (a) (that is, perpendicular to) open.An open-ended 87a of higher open access 87 is communicated with the flow passage 87c of the rear side that is formed on container body 3.Flow passage 87c forms the part of higher open access 87.Thus, in the 4th embodiment, higher open access 87 does not pass the roof 13b of air chamber 13, the roof 13b of the air chamber 13 that yet do not weave throngh.Can use identical setting to low open access 15.
In the 4th embodiment, flow passage 87c prolongs with bending or round about manner, has increased the length of flow passage 87c thus.Flow passage 87c arrives and passes the diapire 7a of print cartridge 41 to form the air open bore, and it is the other end 87b of higher open access 87 and is open into the outside.
Shown in Fig. 8 (a), an open-ended 87a of higher open access 87 is positioned at the position near bight 13d, observes from the square-section of air chamber 13, and 13d bight 13c open with respect to the other end 15b of low open access 15 in this bight is in diagonal position.Shown in Fig. 8 (b), in the 4th embodiment, the other end of higher open access 87 (air open bore) 87b is by diaphragm seal 21 sealings.
In the 4th embodiment, the other end 87b that can form the higher open access 87 of air open bore is formed among the diapire 7a.Thus, other end 87b can be formed and make in roof 7b without any opening.Usually, for print cartridge, the outer surface of roof 7b is normally used for attaching Product labelling thereon and is stored in ink kind in the print cartridge and sequence number etc. with indication.Thus, if the opening that is exposed is formed in the roof, then may the deterioration good looking appearance, thus or the label area that can the be attached visual information of print cartridge that reduced deterioration.But, as higher open access 87 in the 4th embodiment be configured to print cartridge than lower part in form under the situation of air open bore, can provide and to guarantee area that enough this label can be attached print cartridge, and it is beautiful very naturally with the visual confirmation that improves print cartridge.
In addition, the other end 87b of higher open access 87 can not be formed among the diapire 7a, but can be formed on any other position of the side that the diapire 7a of fluid chamber 7 arranged, that is, and and in any position than lower part of print cartridge.
Fig. 9 (a) and 9 (b) show the schematic structure according to the print cartridge 141 of the 5th embodiment of liquid container of the present invention.Fig. 9 (a) is the sectional view of print cartridge, and Fig. 9 (b) is the plane from the print cartridge of observing with respect to the direction of the cross-wise direction of Fig. 9 (a).
The print cartridge 141 of the 5th embodiment shown in Fig. 9 (a) and 9 (b) obtains by changing the 4th embodiment that is discussed with reference to figure 8 (a) and 8 (b), and following thus will the discussion changes part to reduce the repetition in the description.
In print cartridge 141, be separated into first inking chamber 171 and second inking chamber 172 according to the partition wall 132 of the inside of the inking chamber 7 in the print cartridge 41 of the 4th embodiment by being used to separate inking chamber 7 according to the 5th embodiment.Partition wall 132 extends (preferably, partition wall 132 dips down slightly towards the end of connecting path 133 133b and tiltedly extends) substantially in the horizontal direction.
Print cartridge 141 also has and is used to connecting path 133 that first and second inking chamber 171 and 172 is communicated with each other.Connecting path 133 has an end 133a and the other end 133b, this end 133a is open into first inking chamber 171 in the position near the inner surface of the diapire 171a of first inking chamber 171, and this other end 133b is open into second inking chamber 172 in the position near the inner surface of the diapire 172a of second inking chamber 172.
Such as other structure of the position of the structure of higher open access 87 and air chamber 13 and shape can be with the 4th embodiment identical.
In above-mentioned print cartridge 141, will guarantee that the volume of the air chamber 13 of the leakage that being used for prevents to flow backwards causes can be determined corresponding to the volume of the ink 5 that is stored in second inking chamber 172 according to the 5th embodiment.That is, the amount that can only consider the ink that stores in the volume, second inking chamber 172 of second inking chamber 172 waits the volume that air chamber 13 is set.
First inking chamber 171 and second inking chamber 172 that obtain by division communicate with each other via connecting path 133, and this connecting path 133 has end 133a and the 133b that is open into first and second inking chamber 171 and 172 respectively at the position near the diapire 171a of first and second inking chamber 171 and 172 and 172b.Thus, can be provided to the outside by ink supply aperture 9 all by ink 5 stored in first and second inking chamber 171 and the 172 formed inking chambers 7.
Be not limited to print cartridge according to the use of liquid container of the present invention according to the foregoing description.For example, liquid container according to the present invention is suitable for wherein a plurality of liquid containers and removably is mounted to the container installation portion to supply liquid or the multiple liquid situation to the jet head liquid of liquid injection device.The jet head liquid of liquid injection device discussed here comprises, but be not limited to, the jet head liquid of inkjet-type recording device (printhead), be used to make LCD coloured filter the coloured filter manufacturing installation the color pigment injector head, be used to form the electrode of OLED display or FED (surface emitting display) electrode material (conductive paste) injector head, be used to make biochip biochip making equipment biological organic injector head and will be the sampling injector head of accurate pipette.
Claims (14)
1. liquid container comprises:
The container body, it removably is mounted to the container installation portion of device side;
Fluid chamber, it is arranged in the described container body, is used for receiving fluids therein;
The liquid supply orifice, it is communicated with and can be connected to the liquid acceptance division of described device side with described fluid chamber;
The air open access, it is used for making described fluid chamber and external communications and when the described liquid of described fluid chamber is consumed extraneous air is introduced in the described fluid chamber; And
Air chamber, it is arranged in the part of described air open access and can stores the described liquid that enters in the described air open access, wherein
Described air open access comprises:
Low open access, it has an end and the other end, a described end is open into described fluid chamber in the position of the inner surface of the diapire of approaching described fluid chamber, and described the other end is open into described air chamber in the position of the inner surface of the diapire of approaching described air chamber; And
Higher open access, it has an end and the other end, and a described end is open into described air chamber in the position of the inner surface of the roof of approaching described air chamber, and described the other end can be open into described outside.
2. liquid container as claimed in claim 1, wherein
Described the other end of described higher open access is arranged in the side that the roof of the described fluid chamber of described container body is arranged.
3. liquid container as claimed in claim 1, wherein
Described the other end of described higher open access is arranged in the side that the diapire of the described fluid chamber of described container body is arranged.
4. liquid container as claimed in claim 1, wherein
Described the other end of described low open access is arranged in the position near the bight of the described inner surface of the described diapire of described air chamber;
A described end of described higher open access is arranged in the position near the bight of the described inner surface of the described roof of described air chamber; And
Observe on the described diapire direction respect to one another of the described roof of described air chamber and described air chamber, the described bight of the described inner surface of the described roof of described air chamber is the diagonal angle with respect to the described bight of the described inner surface of the described diapire of described air chamber and arranges.
5. as each described liquid container in the claim 1 to 4, wherein
Described air chamber is arranged in the higher part of described fluid chamber.
6. liquid container as claimed in claim 5, wherein
The part of the described roof of described fluid chamber is arranged in the plane that described roof was positioned at of described air chamber.
7. as each described liquid container in the claim 1 to 4, wherein
The volume of described air chamber be equal to or greater than described fluid chamber volume 10% and be equal to or less than described fluid chamber volume 30%.
8. as each described liquid container in the claim 1 to 4, also comprise
Diaphragm seal, it is pasted to described container body, is used to seal described the other end of described higher open access, and described diaphragm seal detachably is open into described outside with the described the other end with described higher open access.
9. as each described liquid container in the claim 1 to 4, also comprise
Gas-liquid separation membrane, it is arranged in the described higher open access, is used to allow gas to pass through via described gas-liquid separation membrane by preventing described liquid via described gas-liquid separation membrane.
10. as each described liquid container in the claim 1 to 4, also comprise
Partition wall, it is used for described fluid chamber is divided into first fluid chamber and second fluid chamber;
Connecting path, it is used to make described first fluid chamber and described second fluid chamber to communicate with each other, described connecting path has an end and the other end, a described end is open into described first fluid chamber in the position of the inner surface of the diapire of approaching described first fluid chamber, described the other end is open into described second fluid chamber in the position of the inner surface of the diapire of approaching described second fluid chamber
Wherein said first fluid chamber is communicated with described air chamber via described low open access with one of them of described second fluid chamber.
11. liquid container as claimed in claim 10, wherein
Described first fluid chamber and described second fluid chamber have each other volume about equally.
12. liquid container as claimed in claim 10, wherein
The internal diameter of described connecting path is configured to hinder passing through of bubble by forming the liquid level concave surface.
13. liquid container as claimed in claim 10, wherein
Described partition wall vertically extends substantially;
Described first fluid chamber is communicated with described liquid supply orifice; And
A described end of described low open access is open into described second fluid chamber in the position of the described inner surface of the described diapire of approaching described second fluid chamber, and described thus second fluid chamber is communicated with described air chamber via described low open access.
14. liquid container as claimed in claim 10, wherein
Described partition wall is horizontal-extending substantially;
Described first fluid chamber is communicated with described liquid supply orifice; And
A described end of described low open access is open into described second fluid chamber in the position of the described inner surface of the described diapire of approaching described second fluid chamber, and described thus second fluid chamber is communicated with described air chamber via described low open access.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005092470 | 2005-03-28 | ||
| JP2005092470 | 2005-03-28 | ||
| JP2006043661 | 2006-02-21 | ||
| JP2006062782 | 2006-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1840344A true CN1840344A (en) | 2006-10-04 |
| CN100522624C CN100522624C (en) | 2009-08-05 |
Family
ID=37029615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610058479XA Expired - Fee Related CN100522624C (en) | 2005-03-28 | 2006-03-28 | Liquid container |
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| Country | Link |
|---|---|
| CN (1) | CN100522624C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223781A (en) * | 2012-01-25 | 2013-07-31 | 精工爱普生株式会社 | Liquid holding container and liquid consuming apparatus |
| CN103347698A (en) * | 2010-11-19 | 2013-10-09 | 多米诺印刷科学有限公司 | Improvements in or relating to inkjet printers |
| CN105500929A (en) * | 2014-10-09 | 2016-04-20 | 多佛欧洲有限责任公司 | Cartridge without inadmissible overpressure |
| CN105929609A (en) * | 2016-04-19 | 2016-09-07 | 京东方科技集团股份有限公司 | Device, method, and system for perfusion |
| CN105984234A (en) * | 2015-03-19 | 2016-10-05 | 精工爱普生株式会社 | Tank, tank unit and liquid ejection system |
-
2006
- 2006-03-28 CN CNB200610058479XA patent/CN100522624C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103347698A (en) * | 2010-11-19 | 2013-10-09 | 多米诺印刷科学有限公司 | Improvements in or relating to inkjet printers |
| CN103347698B (en) * | 2010-11-19 | 2015-11-25 | 多米诺印刷科学有限公司 | To improvement or the relative improvement of ink-jet printer |
| CN103223781A (en) * | 2012-01-25 | 2013-07-31 | 精工爱普生株式会社 | Liquid holding container and liquid consuming apparatus |
| CN103223781B (en) * | 2012-01-25 | 2016-06-22 | 精工爱普生株式会社 | Liquid housing container and liquid consuming device |
| CN105500929A (en) * | 2014-10-09 | 2016-04-20 | 多佛欧洲有限责任公司 | Cartridge without inadmissible overpressure |
| CN105984234A (en) * | 2015-03-19 | 2016-10-05 | 精工爱普生株式会社 | Tank, tank unit and liquid ejection system |
| CN105984234B (en) * | 2015-03-19 | 2019-09-20 | 精工爱普生株式会社 | Ink tank, ink tank unit, liquid injection system |
| CN105929609A (en) * | 2016-04-19 | 2016-09-07 | 京东方科技集团股份有限公司 | Device, method, and system for perfusion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100522624C (en) | 2009-08-05 |
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