CN101391527B - Liquid detection device, method of producing liquid detection device, and liquid container using the same - Google Patents
Liquid detection device, method of producing liquid detection device, and liquid container using the same Download PDFInfo
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- CN101391527B CN101391527B CN2008100880792A CN200810088079A CN101391527B CN 101391527 B CN101391527 B CN 101391527B CN 2008100880792 A CN2008100880792 A CN 2008100880792A CN 200810088079 A CN200810088079 A CN 200810088079A CN 101391527 B CN101391527 B CN 101391527B
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- peristome
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Abstract
A liquid detection device (200) includes a casing main body (102) in which a passage (134) is formed and exposed in an opening (130), a sensor base (210) that is disposed to face the passage of the casing main body, a sensor chip (220) provided on the sensor base, a film (202) that seals the opening in which the sensor base is held, and a partition wall (136) that divides the passage into an upstream side (134a) and a downstream side (134b). The sensor chip has a sensor cavity (222), and the sensor base has a first hole (212) that guides a liquid from the upstream side (134a) to the sensor cavity, and a second hole (214) that guides the liquid from the sensor cavity to the downstream side (134b). The sensor base can come into contact with the casing main body through only the partition wall in a depth direction of the opening.
Description
Technical field
The present invention relates to be particularly useful for detecting liquid (ink) surplus in the liquid consuming devices such as inkjet recording device etc. liquid-detecting, comprise the manufacture method of the liquid housing container and the liquid-detecting of this liquid-detecting.
Background technology
Typical example as in the past liquid consuming device has the inkjet recording device that comprises the recording ink jet recording head of image.As other liquid injection apparatus, for example can list: device with colorant injector head that the colour filter that is used for LCD etc. makes; Device with electrode material (conduction slurry) injector head of the electrode formation that is used for OLED display, face active display (FED) etc.; Device with the biological organic matter injector head that is used for the biochip manufacturing; Has device as the test portion injector head of precise pipet etc.
In inkjet recording device as the typical example of liquid consuming device, ink jet print head is installed on carriage, described ink jet print head has: the pressure generation unit, generating chamber exerts pressure to pressure; And nozzle opening, the ink that is pressed is gone out as ink droplet jet.Described inkjet recording device is by supplying the ink in the ink tank constantly and can print constantly to record head via stream.Ink tank for example can be used as print cartridge and constitutes, and described print cartridge can be changed simply and can be loaded and unloaded by the user at the time point that ink has been consumed.
In the past, management method as the consumption of ink of print cartridge has following method, promptly, the quantity of ink that is attracted with the ejaculation number of the ink droplet of record head and by maintenance is by the software cumulative calculation, thereby by the method calculating method that consumption of ink is managed, by electrode that level detection uses is installed on print cartridge the actual time point that has been consumed scheduled volume of ink managed etc.
But spue number or quantity of ink by software cumulative calculation ink droplet calculate the such management method of consumption of ink and have following problem.The ink droplet that record head spues can produce deviation of weight.The deviation of weight of this ink droplet can not exert an influence to image quality, but considers because the situation that the error of the exhausted amount of ink that deviation causes is accumulated need be filled the ink with surplus capacity to print cartridge.Therefore, some knows from experience the problem of the ink that produces remaining surplus capacity part.
On the other hand, for the method that the time point that has been consumed by the electrode pair ink manages,, therefore can manage the ink surplus with high reliability owing to can detect the actual amount of ink.But, because the electric conductivity of ink is depended in the detection of the liquid level of ink, the complicated shortcoming that has therefore that detectable ink kind is restricted, the hermetically-sealed construction of electrode becomes.In addition,, use the also high noble metal of good conductivity, corrosion resistance usually, therefore can increase the manufacturing cost of print cartridge as the material of electrode.And, owing to need two electrodes are installed, so manufacturing process's change is many, the result can increase manufacturing cost.
Here, in patent documentation 1, as piezo-electric device (being called sensor unit here) device of developing in order to address the above problem is disclosed.This sensor unit utilizes following mode to monitor the ink surplus that print cartridge is interior, promptly, because the resonant frequency of the caused residual vibration signal of residual vibration (free vibration) of the oscillating plate after the forced vibration can have or not ink to change in the inside according to sensor cavities, described sensor cavities has the oscillating plate of piezoelectric element relative with lamination.
In addition, patent documentation 2 discloses following technology, that is, metal system sensor base is sealed and is configured in by film in the recess of unit matrix and finished productization, and described metal system sensor base is mounted with the sensor chip that comprises piezoelectric element.The sensor base of this unit matrix is configured according to the mode of exporting stream in the face of the ink of ink tank.At this moment, the unit matrix thickly is configured on the ink storage container by caulking gum liquid.In order to ensure the close property of the liquid of caulking gum, and be provided with the spring that the unit matrix is pressed to ink tank one thruster.
Fig. 7 of patent documentation 3 or Figure 12 disclose by the next door and about the main body shell wall and in the structure of three place's supporting sensor matrixes.Patent documentation 4 discloses following technology,, anti-ripple wall is set in the liquid relative with sensor that is, even a jar interior liquid level bubbles, it is indoor also can to make bubble be difficult to enter into sensor cavity.
Patent documentation 1: the Japanese documentation spy opens the 2001-146030 communique;
Patent documentation 2: the Japanese documentation spy opens the 2006-281550 communique;
Patent documentation 3: the Japanese documentation spy opens the 2006-315302 communique;
Patent documentation 4: the Japanese documentation spy opens the 2001-328277 communique.
Summary of the invention
(inventing problem to be solved)
Though the technology of patent documentation 2 can realize patent documentation 1 disclosed detection principle, need the unit matrix be set dividually with ink tank, for this unit matrix liquid thickly is fixed on the ink tank, caulking gum and spring are indispensable.
Like this, in the technology of patent documentation 2, number of components increases, and is used to guarantee that the fluid-tight assembling of caulking gum is also very complicated.
In addition, because unit matrix adopting polypropylene and elastomeric dichromatism are shaped, therefore become expensive.
In the technology of patent documentation 3, the body shell that the vibration of piezoelectric element is contacted with sensor base at three places absorbs, and therefore is difficult to fully guarantee that piezoelectric element can detectedly vibrate.In addition because sensor base is positioned at the peristome that is formed on the body shell, therefore when injecting ink, may be in the fine gap around the sensor base residual bubble, thereby flase drop is measured ink and is used up.The Fang Bobi of patent documentation 4 can not prevent this situation, and this is because anti-ripple wall can hinder flowing of ink when injecting ink in the early stage, probably makes sensor produce bubble on every side.
Here, the object of the present invention is to provide a kind of liquid-detecting that can reduce number of components, use the manufacture method of the liquid housing container and the liquid-detecting of this liquid-detecting.
Another object of the present invention is to provide a kind of liquid-detecting with structure of the amplitude in the time of can strengthening liquid and detect, use the manufacture method of the liquid housing container and the liquid-detecting of this liquid-detecting.
It is a kind of by bubble being difficult to remain in the structure around the sensor base to reduce the liquid-detecting that flase drop is surveyed that other purpose of the present invention is to provide.
(means of dealing with problems)
The liquid-detecting of a mode of the present invention is characterised in that, comprising:
Body shell is exposed via peristome and to be formed with stream;
Sensor base by the described peristome of described body shell, is faced configuration with described stream;
Sensor chip comprises piezoelectric element, described piezoelectric element be loaded in the face of described sensor base in the face of the opposite side of the face of described stream on;
Film remains on described sensor base in the described peristome, and seals described peristome; And
The next door is partitioned into described stream upstream one side and downstream one side in described body shell;
Wherein,
Described sensor chip has the sensor cavities of admittance as the liquid of detected object,
Described sensor base comprises: first hole guides described liquid from the upstream described sensor cavities of one side direction of described stream; With second hole, from described sensor cavities to the downstream of described stream one side directed described liquid;
On the depth direction of described peristome, described sensor base can only contact with described body shell via described next door with position between second hole in described first hole of described sensor base.
In a mode of the present invention, when piezoelectric element, the sensor base that is mounted with the sensor chip that comprises piezoelectric element also can be vibrated.If the contact area of this sensor base and body shell is big, then the vibration meeting of sensor base is absorbed by body shell.At this moment, for the amplitude by the detected for example residual vibration of piezoelectric element waveform, can't obtain can be by enough sizes of the detected degree of piezoelectric element.In a mode of the present invention, in embodiment, sensor base can only contact with body shell by the next door on the depth direction of peristome.Therefore, the vibration that is absorbed by body shell becomes bottom line, thereby can guarantee the detected enough amplitudes of piezoelectric element.In addition, when being installed in sensor base in the peristome, can come the supporting sensor matrix, thereby can prevent that sensor base from dropping to the inside of peristome by the next door.
A mode of the present invention can followingly constitute: described body shell has the stream wall in the position relative with described sensor base, and the described stream wall of described next door and described body shell forms and extends to described sensor base.At this moment, when the profiled body housing, can form the next door.
A mode of the present invention can followingly constitute: described body shell also has aiding support portion, and described sensor base is supporting at place except described next door or many places in described aiding support portion when described peristome is installed described sensor base.Thus, when being installed to sensor base in the peristome owing to be at least 2 supportings, therefore can be when assembling supporting sensor matrix stably.
But described aiding support portion does not contact with described sensor base under the state that described sensor base is supported with respect to described stream wall in fact abreast by described film.Thus, when piezoelectric element detected, sensor base can only contact with the next door, thereby can guarantee by the detected enough amplitudes of piezoelectric element.And, acting under the abnormal conditions of impulsive force when falling as liquid-detecting, sensor base contacts with aiding support portion, thus inclination that can the limiting sensor matrix.Thus, can prevent that sensor base from puncturing film.
In order to obtain above effect, can make the aspect ratio on top little to the height on the top in described next door from described stream wall from described stream wall to described aiding support portion.
In a mode of the present invention, do not require that the described sensor base that is supported by described film contacts all the time with the next door.Also can between sensor base that is supported by described film and next door, have small gap.But, condition be and the described next door that forms with described body shell between the flow path resistance in gap bigger than the flow path resistance in described first hole.This be because, can stop thus liquid or bubble via the gap from the upstream one side direction downstream, one side pass through, thereby can guarantee function as the next door.In addition, in order to strengthen the detected amplitude of piezoelectric element, to be more preferably sensor base is not contacted with the next door.
A mode of the present invention can followingly constitute: the top ends in described next door forms thinlyyer than the base end part in described next door, and thin top ends is between described first hole and described second hole of described sensor base.So, can make the formability in next door good, and can prevent that the next door from stopping up the part in first hole, second hole.
In a mode of the present invention, above-mentioned next door also can form with described sensor base between described first hole and described second hole.In addition, also above-mentioned aiding support portion and sensor base can be formed.At this moment, can make the height on the top of aspect ratio on top little from described sensor base to described aiding support portion from described sensor base to described next door.
A mode of the present invention can followingly constitute: described sensor base has following shape: have relative four limits on the direction of two axles of quadrature, each two limit, at least in the described peristome of described body shell, be provided with at least four outstanding location divisions of described four limits of described sensor base in the position relative with four limits of described sensor base, in the zone except described at least four location divisions, form the part that gap between four limits of the wall portion of described peristome and described sensor base forms the described stream of described upstream one side or described downstream one side.
At least four limits of sensor base are positioned by at least four location divisions and are configured in the peristome, and the gap that is formed on simultaneously in the zone except at least four location divisions becomes liquid flow path.Thus, can reduce owing to the residual flase drop that has bubble to cause around sensor base is surveyed the situation of liquid.Though also formed the gap by four location divisions, compared with prior art, it is enough little that it forms the zone, therefore can not become the space of bubble growth.
Here, two position points at least four location divisions are on the extended line in described next door.This is because liquid is flowed via sensor cavities.
In addition, preferably, a location division at least four location divisions forms longlyer along more preferably long limit, a limit of described sensor base.This is because can position sensor base on direction of rotation effectively.
In addition, preferably, be configured in not relative position, described first hole with described sensor base to the supply opening of the described upstream of described stream one side supply liquid, the outlet of discharging liquid from described downstream one side of described stream is configured in not the relative position, described second hole with described sensor base.This is because can make liquid that imports from supply opening or the liquid of deriving from second hole of sensor base run into sensor base or form the wall of stream and disperse, thereby flow into the gap easily.
And, preferably, supply opening and outlet dispose relative in the zone except described at least four location divisions with described peristome, described supply opening is to the described upstream of described stream one side supply liquid, and described outlet is discharged liquid from described downstream one side of described stream.This is because liquid flow in the above-mentioned gap easily thus.
The liquid-detecting of another way of the present invention is characterised in that, comprising:
Body shell is exposed via peristome and to be formed with stream;
Sensor base by the described peristome of described body shell, is faced configuration with described stream;
Sensor chip comprises piezoelectric element, described piezoelectric element be loaded in the face of described sensor base in the face of the opposite side of the face of described stream on;
Film remains on described sensor base in the described peristome, and seals described peristome; The stream wall is arranged in the described body shell, and relative with described sensor base; And the next door, in described body shell, described stream is partitioned into upstream one side and downstream one side;
Wherein,
Described sensor chip has the sensor cavities of admittance as the liquid of detected object,
Described sensor base comprises: first hole guides described liquid from the upstream described sensor cavities of one side direction of described stream; With second hole, from described sensor cavities to the downstream of described stream one side directed described liquid;
Described next door extending integratedly and forming from described sensor base or described stream wall to another person,
Be provided with the gap between another person of described next door and described sensor base or described stream wall, the flow path resistance in described gap is bigger than the flow path resistance in described first hole.
In another way of the present invention, for and the next door that forms of sensor base or stream wall and the gap between its opposite face, by with first hole to recently defining the size of flow path resistance.As mentioned above, because sensor base tunicle supporting, even therefore the next door is not to have support function all the time, as long as can guarantee the function that stops liquid or bubble to pass through as the next door.
In a mode of the present invention and another way, described body shell can be the part of the container that holds described liquid.In other modes of the present invention, defined the liquid housing container that the housing body of liquid housing container is also used as the housing body of liquid-detecting.
When the body shell of liquid-detecting and liquid housing container were one, the vibration meeting of sensor base was sponged by liquid housing container, therefore uses of the present invention of far-reaching significance.In addition, so, need between liquid-detecting and liquid housing container, not seal, remove caulking gum and spring, thereby reduced number of components, improve packaging efficiency yet.And liquid-detecting of the present invention is not limited to the part of body shell as liquid housing container.When the capacity of the housing body of liquid-detecting was big, absorption of vibrations was also big, and is therefore from the viewpoint of the detected amplitude of guaranteeing piezoelectric element reliably, of the present invention of far-reaching significance.
The manufacture method of the liquid-detecting of other modes of the present invention is characterised in that, comprises following operation:
First operation, in the face of configuration, described sensor chip comprises piezoelectric element with the peristome of the sensor base that the is mounted with sensor chip body shell by being formed with stream and described stream;
Second operation, with film be deposited over described peristome around, the sensor base that will be mounted with sensor chip by described film is bearing on the described body shell and seals described peristome;
Wherein,
Described first operation comprises following operation: support described sensor base by the next door, described next door is partitioned into described stream upstream one side and downstream one side in described body shell,
By described first operation and described second operation, sensor cavities is communicated with upstream one side of described stream via first hole that is formed on the described sensor base, and be communicated with downstream one side of described stream via second hole that is formed on the described sensor base, thereby form the detection path of liquid, described sensor cavities is formed on the described sensor chip, and admits the liquid as detected object.
In the method for the invention, next door support unit as sensor base in first operation plays a role, and the spaced walls as upstream, interval and downstream in second operation plays a role.
In the method for the invention described above, in described first operation, come together to support described sensor base by aiding support portion and described next door, in described second operation, described aiding support portion is not contacted with described sensor base.
Other modes of the present invention provide a kind of liquid-detecting, be installed on the liquid housing container, described liquid housing container comprises and will be contained in the liquid supply port of the liquid of liquid housing container inside to the outside supply that described liquid-detecting is characterised in that, comprising:
Sensor chip; And
Be mounted with the sensor base of described sensor chip;
Wherein,
Described sensor chip comprises via peristome admits chamber as the liquid of detected object,
Described sensor base comprises: feed lines, supply described liquid from described peristome one side of described chamber; And discharge path, discharge described liquid from described peristome one side of described chamber;
Described sensor chip involving vibrations plate, described oscillating plate also can vibrate in the face of described chamber, and lamination has piezoelectric element on described oscillating plate,
Described liquid housing container has stream formation portion, and described stream formation portion is communicated with the described feed lines and the described discharge path of described liquid-detecting,
Described liquid-detecting is supported on the described liquid housing container by the next door, and be installed on the described liquid housing container by film, described next door is divided into described stream formation portion the supply stream and imports stream, the described feed lines of described supply stream road direction is supplied described liquid, and described importing stream imports described liquid from described discharge path.
This liquid detection container supports by the next door and the film of liquid housing container, can directly be configured in the liquid housing container.
Description of drawings
Fig. 1 is the concise and to the point stereogram as the ink-jet printer of liquid consuming device;
Fig. 2 is the exploded perspective view that is carried out the print cartridge of loading and unloading with respect to the carriage of printer;
Fig. 3 is the exploded perspective view of ink detection device that has amplified the part of Fig. 2;
Fig. 4 is the front view of print cartridge;
Fig. 5 is the A1-A1 sectional view of Fig. 4;
Fig. 6 is the B1-B1 sectional view of Fig. 4;
Fig. 7 is the right side view of print cartridge;
Fig. 8 is a stereogram of observing sensor base from the back side;
Fig. 9 is the stereogram that the sensor base of sensor chip is installed from surface observation;
Figure 10 is the sectional view after the assembling of ink detection device;
Figure 11 is the brief description figure that the position relation in first, second hole of sensor base and next door is shown;
Figure 12 A, 12B are the figure that the variation in next door is shown;
Figure 13 A, 13B are the figure that the variation that is provided with aiding support portion is shown;
Figure 14 illustrates the figure that next door and aiding support portion is arranged on the variation of sensor base one side;
Figure 15 is the sectional view of sensor chip;
Figure 16 observes the mounting structure of Figure 12 B, Figure 13 B or sensor base 210 shown in Figure 14 and the vertical view that it is schematically illustrated from the top of each figure;
Figure 17 A is the vertical view with the present embodiment shown in the state identical with Figure 16, and Figure 17 B is the A2-A2 sectional view of Figure 17 A, and Figure 17 C is the B2-B2 sectional view of Figure 17 A;
Figure 18 is the vertical view that the more concrete embodiment of Figure 17 is shown;
Figure 19 is the A3-A3 sectional view of Figure 18;
Figure 20 is the B3-B3 sectional view of Figure 18;
Figure 21 is the vertical view of the body shell 400 before the sensor installation matrix 210;
Figure 22 A is other the vertical view of embodiment that the expression state identical with Figure 17 and Figure 18 is shown, and Figure 22 B is the A4-A4 sectional view of Figure 22 A.
The specific embodiment
Below, preferred implementation of the present invention is described.Wherein, below Shuo Ming present embodiment is not to limit the content of the present invention that claims are put down in writing irrelevantly, and all structures that illustrate by present embodiment are not solution essential to the invention.
(briefing of print cartridge)
The print cartridge with liquid-detecting (liquid housing container) of embodiments of the present invention is described with reference to accompanying drawing.
Fig. 1 illustrates the concise and to the point formation of the inkjet recording device (liquid consuming device) of the print cartridge that uses present embodiment.The timing belt 3 that carriage 1 is driven via carriage motor 2 is directed to parts 4 guiding, thus platen 5 axially on come and go and move.
Side relative with recording paper 6 at carriage 1 is mounted with ink jet recording head 12.On the fixator (not diagram) on the top that is arranged at carriage 1, the print cartridge 100 to record head 12 supply inks is installed releasably.
In original position (in Fig. 1, being the right side), dispose cover 13 as the nonprinting region of this tape deck.When the record head 12 on being loaded in carriage 1 moved to original position, the nozzle that cover 13 covers record head 12 formed face, thus and nozzle formation face between form confined space.Dispose pump unit 10 below cover 13, described pump unit 10 is used for applying negative pressure, cleaning etc. to the confined space that is formed by cover 13.
Near print area one side of cover 13, dispose wiper member 11 according to the mode that can on the motion track of record head 12, for example horizontal direction, advance and retreat, described wiper member 11 comprises elastic plates such as rubber.When carriage 1 when cover 13 1 sides move back and forth, wiper member 11 nozzle of wiping record head 12 as required forms face.
Fig. 2 is the exploded perspective view that the concise and to the point formation of print cartridge 100 is shown.Wherein, the consistent state of above-below direction when being installed in state on the carriage 1 with print cartridge 100 shows Fig. 1.Above-below direction when therefore, the word that uses in the following description is meant up and down print cartridge 100 is loaded in state on the carriage 1.
The ink output stream of ink flow path portion finally is communicated with ink supply portion 110, and the ink in the print cartridge 100 is supplied after this ink supply portion 110 drinks up by negative pressure.
Penetrate the ink supply pin (not diagram) of the fixator that is arranged on the carriage 1 to ink supply portion 110.Ink supply portion 110 has: supply valve 112 is pushed by the ink supply pin and slides, opens valve; Seal member 114 is formed by the chimeric on every side elastomer elastomeric material with the ink supply pin; And press member 116, form by the helical spring that supply valve 112 is exerted pressure to seal member 114.These parts are assembled in the following manner, that is, filling press member 116 makes seal member 114 and ink supply portion 110 chimeric then, gives as security supply valve 112 at last.
A side in body shell 102 is provided with bar 120, and described bar 120 engages with fixator one side on being arranged on carriage 1.On a side of body shell 102, the lower position of for example bar 120 is formed with terminal location opening upstream one side, ink output stream that is positioned at ink supply portion 110 and the peristome 130 that forms.Periphery at peristome 130 is formed with deposited with rib 132.And, being formed with next door 136, described next door 136 will be partitioned into upstream surge chamber 134a and downstream surge chamber 134b (in Fig. 2, omitting label, with reference to Fig. 6 described later and Fig. 7) in the face of the ink output stream 134 of this peristome 130.
(ink detection device)
Below, with reference to Fig. 2 and Fig. 3 illustrate the main consuming body housing 102, ink output stream 134 and next door 136 that constitute, as the briefing of the ink detection device 200 of liquid-detecting of the present invention.Fig. 3 amplifies the ink detection device 200 that shows in the print cartridge shown in Figure 2 100.
In Fig. 2 and Fig. 3, ink detection device 200 comprises: resinous body shell 102 is formed with ink output stream 134; Metal sensor base 210 is faced configuration by the peristome 130 and the ink output stream 134 of body shell 102; Sensor chip 220, be loaded in sensor base 210 face in the face of the opposite side of the face of ink output stream 134 on; Film 202 remains on sensor base 210 in the peristome 130, and sealed open portion 130; And next door 136, in body shell 102, ink is exported stream 134 and be partitioned into upstream one side and downstream one side.Film 202 is bonded in the upper surface of sensor base 210, and is deposited over deposited the using on the rib 132 on every side of peristome 130.
In Fig. 2 and Fig. 3, ink detection device 200 can have: gland 230 is configured in the upside of sensor base 210, sensor chip 220 and film 202; Relaying terminal 240 is contained in the gland 230, has terminal 242, and described terminal 242 electrically contacts via the hole 202a and the sensor chip 220 that are formed on the film 202; And circuit substrate 250, be contained in the gland 230, and be electrically connected with the terminal 244 of relaying terminal 240.In addition, as liquid-detecting 200 of the present invention, gland 230, relaying terminal 240 and circuit substrate 250 be inscape not necessarily.
Explain ink detection device 200 with reference to Fig. 4～Figure 11.Fig. 4 is the front view of body shell 102.Shown in Figure 5 as the A1-A1 sectional view of Fig. 4, expose by peristome 130 position of terminal one side of ink output stream 134 before arriving ink supply portion 110 shown in Figure 2.
As the Fig. 6 of the B1-B1 sectional view of Fig. 4 and shown in Figure 7 as the right side view of print cartridge 100, the ink output stream 134 that exposes by peristome 130 has been partitioned into upstream surge chamber 134a and downstream surge chamber 134b by next door 136.And, as shown in Figure 6, in the face of upstream surge chamber 134a configuration supply opening 135a, as shown in Figure 4, in the face of downstream surge chamber 134b configuration outlet 135b.
Fig. 8 is the stereogram from beneath sensor base 210.As shown in Figure 9, sensor base 210 is provided with 212 and second hole, first hole (supply road) (discharge road) 214 that connects on thickness direction.
Fig. 9 is a stereogram of observing the sensor base 210 that is mounted with sensor chip 220 from the top.In addition, Figure 10 is the sectional view that schematically shows the state after Fig. 2 and ink detection device shown in Figure 3 200 assemblings.In addition, Figure 15 is the sectional view of sensor chip.
In Figure 10 and Figure 15, sensor chip 220 has the sensor cavities 222 of admittance as the ink (liquid) of detected object, and in order to admit ink, the lower surface of sensor cavities 222 opens wide.As Fig. 9 and shown in Figure 15, with the upper surface of oscillating plate 224 sealing sensor cavities 222.And, dispose piezoelectric element 226 at the upper surface of oscillating plate 224.
Specifically, as shown in figure 15, sensor chip 220 constitutes by lamination oscillating plate 224 on chamber panel 301, and has vibration chamber formation base portion 300, and described vibration chamber forms base portion 300 and has first 300a respect to one another and second 300b.Sensor chip 200 also has lamination forms second 300b one side of base portion 300 at chamber piezoelectric element 226.
In vibration chamber formation base portion 300, be formed with chamber 222 according to its mode to first 300a side opening, described chamber 222 is used to admit the medium (ink) as detected object, be columnar spatial form, the bottom surface sections 222a of chamber 222 can be formed quiveringly by oscillating plate 224.In other words, the profile of the part of the actual vibration in the whole oscillating plate 224 is limited by chamber 222.The two ends that form second 300b one side of base portion 300 at the vibration chamber are formed with electrode terminal 228,228.
Be formed with lower electrode 310 on second 300b of vibration chamber formation base portion 300, this lower electrode 310 is connected with an electrode terminal 228.
Lamination has piezoelectric layer 312 on lower electrode 310, and lamination has upper electrode 314 on this piezoelectric layer 312.Upper electrode 314 is connected on the auxiliary electrode 320 that insulate with lower electrode 310.This auxiliary electrode 320 is connected with another electrode terminal 228.
(detecting the ink surplus)
As shown in figure 10, the ink of exporting the supply opening 135a importing of stream 134 from ink is trapped in the surge chamber 134a of upstream, and described upstream surge chamber 134a is for using isolated rooms 136, next door.
This upstream surge chamber 134a is communicated with the sensor cavities 222 of sensor chip 220 via first hole 212 of sensor base 210.Therefore, the ink in the upstream surge chamber 134a is along with the ink derivation imports in the sensor cavities 222 via first hole 212.Here, from being passed to ink by piezoelectric element 226 by the vibration of the oscillating plate 224 that vibrated, the frequency by this residual vibration waveform detects having or not of ink.Also sneaked into the terminal point of using up of air in sensor cavities 222 except ink, the decay of residual vibration waveform is big, and comparing during with the state that has been full of ink becomes high-frequency.Can detect ink and use up by detecting this frequency.
Specifically, when when piezoelectric element 226 applies voltage, oscillating plate 224 is out of shape along with the distortion of piezoelectric element 226.If after piezoelectric element 226 forcibly is out of shape, remove voltage application, then oscillating plate 224 can the temporary transient residual bending vibration that has.This residual vibration is the free vibration of the medium in oscillating plate 224 and the sensor cavities 222.Therefore, by becoming impulse waveform or square wave, can obtain applying the oscillating plate 224 behind the voltage and the resonance state of medium easily to the voltage transition that piezoelectric element 226 applies.
This residual vibration is the vibration of oscillating plate 224, and the distortion that is accompanied by piezoelectric element 226 produces.Therefore, piezoelectric element 226 is accompanied by residual vibration and produces counter electromotive force.
As shown in figure 10, circuit substrate 250 has electrode 254, described electrode 254 with run through the through hole 252 of showing the back side and be connected.Handle from the parser circuitry (not diagram) that the signal of the relaying terminal 240 that contacts with sensor chip 220 is loaded on the printer main body via through hole 252 and electrode 254, its result is transmitted to the semiconductor storage (not diagram) that is loaded on the circuit substrate 250.That is, the counter electromotive force of piezoelectric element 226 sends parser circuitry to via relaying terminal 240, and its result is stored in the semiconductor storage.
Owing to can determine resonant frequency, so can detect in the print cartridge 100 according to this resonant frequency and have or not ink by detected like this counter electromotive force.And, in semiconductor storage, store the information of the colouring information of the identifying information of the kind etc. of print cartridge 100, ink that print cartridge 100 held and standing crop of ink etc.
Along with the derivation of more inks, the ink that is trapped in the sensor cavities 222 is directed among the surge chamber 134b of downstream via second hole 214 of sensor base 210.And, derived along ink output stream 134 via ink discharge outlet 135b, finally discharge from print cartridge 100 via ink supply portion 110 (with reference to Fig. 2).
(bearing method of sensor base and supporting structure)
For sensor base 210, sensor chip 220 and film 202 are installed in the peristome 130, need following two operations: first operation, with the peristome 130 of the metal system sensor base 210 that is mounted with sensor chip 220 body shell 102 by being formed with stream 134 and stream 134 in the face of disposing; Second operation is deposited over film 202 on the rib 132 on every side of peristome 130, by film 202 sensor base 210 is bearing on the body shell 102.And, as mentioned above, by first operation and second operation sensor cavities 222 that is formed on the sensor chip 220 is communicated with upstream surge chamber 134a via first hole 212 that is formed on the sensor base 210, and being communicated with downstream surge chamber 134b, thereby the detection path of formation liquid via second hole 214 that is formed on the sensor base 210.
In the present embodiment, in first operation before film 202 is deposited, only by next door 136 supporting sensor matrixes 210 (supporting functions in next door).This be because, film 202 be deposited over peristome 130 around deposited with before the rib 132, sensor base 210 must be positioned at temporarily the preposition place of peristome 130.In addition, in second operation, after 202 supportings of sensor base 210 tunicles, on the depth direction of peristome 130, sensor base 210 only can contact (the interval function of the upstream and downstream in next door) with next door 136.And,, still, require the interval function of the upstream and downstream in next door 136 all the time because therefore 202 supportings of sensor base 210 tunicles do not require that sensor base 210 contacts with next door 136 all the time.
Here, as shown in figure 10, in the present embodiment,, has stream wall 102a with sensor base 210 relative configurations in order to divide ink output stream 134.And next door 136 forms with this stream wall 102a.This next door 136 is to be separated into upstream surge chamber 134a and downstream surge chamber 134b and indispensable structure for ink being exported stream 134.This is because if there is no the next door 136, then can not guarantee ink or bubble process sensor cavities 222 as the medium in the ink output stream 134.And if ink in the ink output stream 134 or bubble be without sensor cavities 222, then sensor chip 220 can flase drops be measured ink and is used up terminal point.
Be partitioned into upstream surge chamber 134a and downstream surge chamber 134b for ink being exported stream 134, must make next door 136 and sensor base 210 butts, perhaps have the small gap that at least bubble is passed through via the gap between sensor base 210 and the next door 136.In other words, the flow path resistance in gap is bigger than the flow path resistance in first hole 212, and can not allow bubble to pass through at least.This is the function of the script in next door 136.
On the other hand, when sensor installation matrix 210 (first operation), next door 136 is supported with sensor base 210 butts, thereby can prevent that sensor base 210 from dropping to the inside of peristome 130.That is, in first operation, next door 136 has the function of temporary support sensor base 210.
In this case, can detect the residual vibration waveform by piezoelectric element 226.This be because, in the present embodiment, the body shell 102 of ink detection device 200 is parts of the body shell of print cartridge 100, capacity is big.In general, body shell 102 is for example formed by flexible materials such as polypropylene by resin manufacture, if capacity is big, then absorption of vibrations becomes big.
Here, if piezoelectric element 226 vibrates, then except oscillating plate 224, the sensor base 210 that is mounted with this sensor chip 220 also can be vibrated.If this sensor base 210 is big with the contact area of body shell 102, then the vibration meeting of sensor base 210 is sponged by body shell 102.At this moment, can't obtain can be by the amplitude of the detected enough big residual vibration waveform of piezoelectric element 226.
In the present embodiment, only tunicle 202 and next door 136 supportings of sensor base 210, so the vibration wave that body shell 102 is absorbed becomes bottom line, thus can guarantee by piezoelectric element 226 detected enough amplitudes.
Figure 11 is the figure from the state that blocks of beneath next door 136 midway.Next door 136 is between first hole 212 and second hole 214 of sensor base 210.And the maximum ga(u)ge of the top ends in next door 136 is to occur under the tangent situation in next door 136 and first hole 212 and second hole 214, and can not stop up first hole 212 and second hole 214.This is because can increase the flow path resistance by first, second hole of predetermined design.
(variation)
As mentioned above, present embodiment is had been described in detail, do not carry out various deformation but can substantially not break away under the situation of new item of the present invention and effect, this is to understand easily to those skilled in the art.Therefore, such variation all is included in the scope of the present invention.For example, in specification or accompanying drawing, at least once can be replaced into described different word in any position of specification or accompanying drawing with the word that the different word of broad sense or synonym is more put down in writing together.
Shown in Figure 12 A, 12B, next door 136 also can have the cardinal extremity 136a thin conical in shape of the thickness of free end 136b than stream wall 102a one side.That is, even cardinal extremity 136a is wideer than the distance between the edge in first hole 212 and second hole 214, as long as the thickness of free end 136b is identical with Figure 10 less than the distance between the edge.This is because can not increase the flow path resistance in first hole 212 and second hole 214.By thickening cardinal extremity 136a, the formability in the time of can improving injection molding.In addition, as the method that makes free end 136b attenuation, except as Figure 12 B, forming the inclination conical surface, can also make the free end bending.
Stability when installing in order to improve sensor base 210 also can constitute as Figure 13 A, 13B.That is, aiding support rib 138 except that next door 136 can be set also.In Figure 13 A, 13B, but the both end sides on the length direction of sensor base 210 disposes two aiding support ribs 138 of butt.But the height H 2 on top that compares next door 136 from the height H 1 on the top of 102a to two aiding support rib 138 of stream wall is little.
In embodiment shown in Figure 10, sensor base 210 is only supported by next door 136 when mounted, so sensor base 210 is subjected to centre bearing, poor stability as seesaw.In the embodiment of Figure 13 A, 13B, though sensor base 210 run-off the straights, also since the end of its decline can with aiding support rib 138 butts, therefore can form 2 supportings and become stable with next door 136.
But after having assembled sensor base 210, shown in Figure 13 B, sensor base 210 is configured to almost parallel with stream wall 102a, so sensor base 210 does not contact with aiding support rib 138.Thus, with the identical amplitude that can guarantee residual vibration widely of embodiment of Figure 10.
In addition, even after having assembled sensor base 210, when having taken place as effect landing unusual the impulsive force arranged, aiding support rib 138 also can prevent sensor base 210 over-tiltings.Therefore, can prevent to puncture film 202 behind sensor base 210 over-tiltings of tunicle 202 supporting.
In addition, next door 136 is not limited to be arranged on the stream wall 102a.For example, as shown in figure 14, also can be provided with from the next door 216 of hanging down between first hole 212 of sensor base 210 and second hole 214.This next door 216 contacts with stream wall 102a, perhaps has flow path resistance than the big minim gap of the flow path resistance in first hole 212 and relative with it.In Figure 14, also be provided with the aiding support rib 218 that hangs down in the two ends on for example length direction of sensor base 210.The height H 2 on top that compares next door 136 from the height H 1 on the top of lower surface to the two aiding support rib 138 of sensor base 210 is little.So, also can obtain the effect identical with the embodiment of Figure 13 A, 13B.In addition, also can be in stream wall 102a and sensor base 210 one on the next door is set, the aiding support rib is set on another person.Like this, when next door 216 and/or aiding support rib 218 are set, for example can form sensor base 210 on sensor base 210 by machining.
Below, the structure that is used to prevent that the flase drop that causes because of bubble from surveying is described with reference to Figure 16～Figure 21.
Figure 16 observes the mounting structure of Figure 12 B, Figure 13 B or sensor base 210 shown in Figure 14 and the vertical view that it is schematically illustrated from the top of each figure.In Figure 16, removed film 202.As shown in figure 16, on body shell 102, be formed with peristome 102A, under the state in sensor base 210 is configured in this peristome 102A, 202 supportings of sensor base 210 tunicles.But, in Figure 16, do not illustrate film 202.
Here, between four limits of the inner wall part of peristome 102A and rectangular-shaped sensor base 210, be formed with small clearance D 1.Set tolerance in design to reduce this clearance D 1, sensor base 210 is positioned in the peristome 102A.
Problem to structure shown in Figure 16 describes.When filling ink in body shell 102, body shell 102 inside are formed near filling ink behind the vacuum state.At this moment, though clearance D 1 is communicated with upstream surge chamber 134a or downstream surge chamber 134b shown in Figure 10, but since narrow in all inaccessiable degree of ink, therefore when ink is full of upstream surge chamber 134a and downstream surge chamber 134b, in clearance D 1, bubble can residually be arranged.
Because film 202 for example has gas permeability as polypropylene (PP) waits, so this bubble can grow up behind long-time suction gas, and grows into air pocket.The bubble of growing up for example vibration by the piezoelectric element 226 (with reference to figure 1) on the sensor base 210 etc. breaks away from from clearance D 1, enters into upstream surge chamber 134a that is communicated with sensor cavities 222 or downstream surge chamber 134b shown in Figure 10.If this bubble has arrived in the sensor cavities 222,, use up but still can flase drop measure ink although then still residual have an ink.
Figure 17 A～Figure 17 C schematically shows the structure of improving this problem.Figure 17 A is the vertical view with the present embodiment shown in the state identical with Figure 16.Figure 17 B is the A2-A2 sectional view of Figure 17 A, and Figure 17 C is the B2-B2 sectional view of Figure 17 A.
Because Figure 17 A illustrates the figure that solves principle, therefore schematically illustrated sensor base 210 is the rectangles with four limits.In peristome 402, be provided with locally to outstanding four location divisions 410,411,412,413, four limits of sensor base 210 in the position relative with four limits of sensor base 210.
At this moment, shown in Figure 17 A, between the distance between length on the width of sensor base 210 and the location division 410,412, can produce clearance D 1.Equally, between the distance between length on the length direction of sensor base 210 and the location division 411,413, can produce clearance D 1.By coming specified gap D1 with dimensional tolerance in design, can position by 410～413 pairs of sensor base 210 in four location divisions.And the size of clearance D 1 is identical with clearance D shown in Figure 16 1, this clearance D 1 narrow degree that can not flow into to ink.
In addition, in the zone except four location divisions 410,411,412,413, between four limits of the wall portion that forms peristome 402 and sensor base 210, be formed with and compare enough big clearance D 2 by above-mentioned design tolerance predetermined gap D1.This clearance D 2 forms the part of stream 134, and this stream 134 is formed among Figure 17 B or upstream surge chamber 134a shown in Figure 17 C or downstream surge chamber 134b that separates by the next door 136 shown in Figure 17 A.
Promptly, when injecting ink, shown in the solid line of Figure 17 B, ink imports in the sensor cavities 222 via first hole 212 of sensor base 210, but shown in the dotted line of Figure 17 B, the ink that imports to upstream surge chamber 134a from supply opening 135a is run into wall (sensor base 210) the back dispersion that is positioned at the place ahead on the direction of advance, thereby has also flowed into ink in the clearance D 2 around the sensor base 210.Perhaps, shown in the solid line of Figure 17 C, ink exports to the outlet 135b still from sensor cavities 222 via second hole 214 of sensor base 210, shown in the dotted line of Figure 17 C, the ink of deriving from second hole 214 is run into wall (wall of the downstream surge chamber 134b) back that is positioned at the place ahead on the direction of advance and is disperseed, thereby has also flowed into ink in the clearance D 2 around the sensor base 210.
Like this, in clearance D 2, also be full of and ink arranged and not residual bubble.Therefore, can prevent the flase drop survey that ink is used up.
And, in order to make ink flow into clearance D 2 easily, preferably the supply opening 135a of upstream surge chamber 134a is set in not the position relative, the outlet 135b of downstream surge chamber 134b is set in not the position relative with second hole 214 of sensor base 210 with first hole 212 of sensor base 210.This is because as mentioned above, there is wall in the place ahead on the direction of advance of the ink that is imported into or derives, so ink disperses easily and flow in the clearance D 2.
Here, relative two location divisions 410,412 among four location divisions are positioned on the extended line in next door 136 (with reference to figure 17A).If this is because not like this, then can form the stream that the side make next door 136 is communicated with opposite side by clearance D, thereby form without the ink flow path of sensor cavities 222.
Figure 18～Figure 21 shows other embodiments that the embodiment of Figure 17 A～Figure 17 C is specialized more.Figure 18 is the vertical view with other embodiments shown in the state identical with Figure 17.Figure 19 is the A3-A3 sectional view of Figure 18, and Figure 20 is the B3-B3 sectional view of Figure 18.Figure 21 is the vertical view of the body shell 400 before the sensor installation matrix 210.
As shown in figure 18, around the peristome 402 of body shell 400, be formed with the deposited of ring-type of applying and be with 404 with film 202 (omitting diagram) hot melt.Sensor base 210 has relative four limits on two axles of quadrature, each two limit.Sensor base 210 is owing to needing the location to have four limits, and the shape that still connects this each limit is unrestricted.
As Figure 18～shown in Figure 21, in peristome 402, with four positions that the limit is relative of sensor base 210, be provided with to outstanding four location divisions 410,411,412,413, four limits of sensor base 210.Wherein, location division 410 is along a limit of sensor base 210, particularly long limit forms longlyer.Other location division 411～413 is arranged on other place, three limits of sensor base 210 partly.
By in design to clearance D 1 (in Figure 18～Figure 21, omitted) the setting tolerance, sensor base 210 is positioned in the peristome 402, described clearance D 1 on each relative on two axles that sensor base 210 is had two limit at quadrature, amount between four location divisions 410～413 relative, four limits with following these limits.In addition, by making at least one location division 410 in four location divisions along a limit of sensor base 210, particularly long limit forms longlyer, can on direction of rotation, position effectively sensor base 210.But, consider from the angle that produces bubble, preferably do not set the zone of clearance D 1 too much, consider that from the relation of restriction rotation the location division that forms longly only forms along a limit and gets final product.
And, in the zone except four location divisions 410,411,412,413, between four limits of the wall portion that forms peristome 402 and sensor base 210, be formed with and compare enough big clearance D 2 by above-mentioned design tolerance predetermined gap D1.This clearance D 2 forms the part of stream 134, and this stream 134 is formed among the upstream surge chamber 134a or downstream surge chamber 134b that separates by next door 136.
As mentioned above, filling ink after making body shell 400 inside form near the state of vacuum.At this moment, because the clearance D 2 that is communicated with upstream surge chamber 134a or downstream surge chamber 134b also can become the stream of ink, so when ink has been full of upstream surge chamber 134a and downstream surge chamber 134b, also be full of ink in the clearance D 2 and can residual bubble.Thus, can prevent the flase drop survey that ink is used up.
And relative two location divisions 410,412 in four location divisions are positioned on the extended line in next door 136 (with reference to Figure 21), thereby can prevent to form the ink flow path without sensor cavities 222.
In the embodiment of Figure 18～shown in Figure 21, also the supply opening 135a of upstream surge chamber 134a is set in not the position relative, the outlet 135b of downstream surge chamber 134b is set in not the position relative with second hole 214 of sensor base 210 with first hole 212 of sensor base 210.For the position of this supply opening 135a and outlet 135b, also can setting like that shown in Figure 22 A and Figure 22 B.Figure 22 A is other the vertical view of embodiment that the state identical with Figure 18 A is shown, and Figure 22 B is the A4-A4 sectional view of Figure 22 A.
In the embodiment shown in Figure 22 A and Figure 22 B, all be configured in the position relative with the clearance D 2 of peristome 402 with being arranged on supply opening 135a and outlet 135b in being arranged on downstream surge chamber 134b among the surge chamber 134a of upstream.At this moment, preferred spaced walls 134a1 that separates supply opening 135a and upstream surge chamber 134a and the spaced walls 134b1 that separates outlet 135b and downstream surge chamber 134b of being provided with.
This be because, the ink that imports from supply opening 135a flow into the clearance D 2 straight, preferably being spaced apart wall 134a1 guides and flow in the clearance D 2, similarly, the ink of discharging from second hole 216 of sensor base 210 is run into the wall of downstream surge chamber 134b and is flow into after disperseing the clearance D 2, preferably is spaced apart wall 134b1 guiding and flow in the clearance D 2.
In addition, the purposes of liquid housing container of the present invention is not limited to the print cartridge of inkjet recording device.Can be diverted in the various liquid consuming devices of fluid jetting head etc. of drop with ejection trace.
As the object lesson of liquid consuming device, for example can list: device with colorant injector head that the colour filter that is used for LCD etc. makes; Device with electrode material (conduction slurry) injector head of the electrode formation that is used for OLED display, face active display (FED) etc.; Device with the biological organic matter injector head that is used for the biochip manufacturing; Has device as the test portion injector head of precise pipet; Dyeing and printing device or differential orchestration etc.
In addition, liquid-detecting of the present invention is not limited to be assembled in the print cartridge of frame following formula, also can be assembled into unloaded secondary jar on the carriage, in the print cartridge of posture etc.
And, in the above-described embodiment, the housing body of liquid-detecting as the part of housing body of liquid housing container, and has been removed caulking gum and spring as patent documentation 2, but has been not limited thereto.Also can be used as the unit that separates with the housing body of liquid housing container and constitute liquid-detecting.At this moment, though perhaps can not remove caulking gum and spring,, also the absorption of vibrations of this unit housings can be suppressed to bottom line, thereby help to guarantee the amplitude of detection waveform even unit housings maximizes.In the above-described embodiment, also liquid injection apparatus can be embodied as the printer of so-called full line (full head) (line printing head (line head) mode), promptly, on the direction that the carriage direction (fore-and-aft direction) with recording paper (omit diagram) intersects, record head 19 forms the corresponding global shape of length on the width (left and right directions) with recording paper (omit and illustrate).
In the above-described embodiment, liquid injection apparatus is embodied as ink-jet printer 11, but be not limited thereto, also can be embodied as and spray or other liquid except that ink of ejection (comprising: the particle dispersion of functional material or be blended in the liquid and the aqueous body of formation; The stream shape body of similar gels) liquid injection apparatus.For example, also can be following injection apparatus: aqueous body injection apparatus, spray aqueous body, described aqueous body comprises the electrode material and the colorant materials such as (pixel materials) of manufacturing of being used for LCD, EL (electroluminescence) display and face active display etc. with the form that disperses or dissolves; Liquid injection apparatus sprays the biological organic matter that is used for the biochip manufacturing; Liquid injection apparatus as precise pipet, sprays the liquid that becomes test portion.In addition, can also be following injection apparatus: with the liquid injection apparatus of trace to precision optical machinery jet lubrication oil such as clock and watch or cameras; For the small packaged lens (optical lens) that is formed for optical communication device etc. etc., and on substrate, spray the liquid injection apparatus of transparent resin liquid such as ultraviolet hardening resin; For substrate etc. is carried out etching and spray the liquid injection apparatus of etching solutions such as acid or alkali; The stream shape body injection apparatus of stream shape bodies such as injection gel (for example physical gel).And the present invention goes for wherein any liquid injection apparatus.In addition, in this manual, " liquid " for only not comprising the notion of the liquid that is formed by gas, and liquid for example comprises aqueous body except that inorganic solvent, organic solvent, solution, aqueous resin, aqueous metal (molten metal) etc., stream shape body etc.Device with test portion injector head of conduct; Dyeing and printing device or differential orchestration etc.
Claims (22)
1. a liquid-detecting is characterized in that, comprising:
Body shell is exposed via peristome and to be formed with stream;
Sensor base by the described peristome of described body shell, is faced configuration with described stream;
Sensor chip comprises piezoelectric element, described piezoelectric element be loaded in the face of described sensor base in the face of the opposite side of the face of described stream on;
Film remains on described sensor base in the described peristome, and seals described peristome; And
The next door is partitioned into described stream upstream one side and downstream one side in described body shell;
Wherein,
Described sensor chip has the sensor cavities of admittance as the liquid of detected object,
Described sensor base comprises: first hole guides described liquid from the upstream described sensor cavities of one side direction of described stream; With second hole, from described sensor cavities to the downstream of described stream one side directed described liquid;
On the depth direction of described peristome, described sensor base can only contact with described body shell via described next door with position between second hole in described first hole of described sensor base.
2. liquid-detecting as claimed in claim 1 is characterized in that,
Described body shell has the stream wall in the position relative with described sensor base,
The described stream wall of described next door and described body shell forms and extends to described sensor base.
3. liquid-detecting as claimed in claim 2 is characterized in that,
Described body shell also has aiding support portion, described sensor base is supporting at place except described next door or many places in described aiding support portion when described peristome is installed described sensor base, described aiding support portion does not contact with described sensor base under following state, and described state is the state that described sensor base is supported with respect to described stream wall in fact abreast by described film.
4. liquid-detecting as claimed in claim 2 is characterized in that,
Described body shell also has aiding support portion, and described sensor base is supporting at place except described next door or many places in described aiding support portion when described peristome is installed described sensor base,
Described aiding support portion extends and forms to described sensor base from described stream wall, and the aspect ratio on the top from described stream wall to described aiding support portion is little to the height on the top in described next door from described stream wall.
5. liquid-detecting as claimed in claim 2 is characterized in that,
The described sensor base that is supported by described film and the flow path resistance in the gap between the described next door are bigger than the flow path resistance in described first hole.
6. as each described liquid-detecting in the claim 2 to 5, it is characterized in that,
The top ends in described next door forms thinlyyer than the base end part in described next door, and thin top ends is between described first hole and described second hole of described sensor base.
7. liquid-detecting as claimed in claim 1 is characterized in that,
Described body shell has the stream wall in the position relative with described sensor base,
Described next door forms with described sensor base between described first hole and described second hole, and extends to described stream wall.
8. liquid-detecting as claimed in claim 7 is characterized in that,
Described sensor base also has aiding support portion, described aiding support portion when described peristome is installed described sensor base at the place except described next door or many places contact and support described sensor base with described stream wall, described aiding support portion does not contact with described stream wall under following situation, and described situation is meant that described sensor base is supported with respect to described stream wall in fact abreast by described film.
9. liquid-detecting as claimed in claim 7 is characterized in that,
Described sensor base also has aiding support portion, described aiding support portion when described peristome is installed described sensor base at the place except described next door or many places contact and support described sensor base with described stream wall,
Described aiding support portion extends and forms to described stream wall from described sensor base, and the height on the top of aspect ratio from described sensor base to described next door on the top from described sensor base to described aiding support portion is little.
10. as each described liquid-detecting in the claim 7 to 9, it is characterized in that,
The described next door of the described sensor base that is supported by described film and the flow path resistance in the gap between the described stream wall are bigger than the flow path resistance in described first hole.
11. liquid-detecting as claimed in claim 1 is characterized in that,
Described sensor base has following shape: have relative four limits on the direction of two axles of quadrature, each two limit,
At least in the described peristome of described body shell, be provided with at least four outstanding location divisions of described four limits of described sensor base in the position relative with four limits of described sensor base,
In the zone except described at least four location divisions, form the part that gap between four limits of the wall portion of described peristome and described sensor base forms the described stream of described upstream one side or described downstream one side.
12. liquid-detecting as claimed in claim 11 is characterized in that,
Two position points in described at least four location divisions are on the extended line in described next door.
13. liquid-detecting as claimed in claim 11 is characterized in that,
A location division in described at least four location divisions forms longly than other location division along the limit of described sensor base.
14. liquid-detecting as claimed in claim 13 is characterized in that,
Location division than other forms longly along the length on the limit of described sensor base a location division in described at least four location divisions along the long limit of described sensor base.
15. as each described liquid-detecting in the claim 11 to 14, it is characterized in that,
Be configured in not relative position, described first hole with described sensor base to the supply opening of the described upstream of described stream one side supply liquid, the outlet of discharging liquid from described downstream one side of described stream is configured in not the relative position, described second hole with described sensor base.
16. liquid-detecting as claimed in claim 15 is characterized in that,
Supply opening and outlet dispose relative in the zone except described at least four location divisions with described peristome, described supply opening is to the described upstream of described stream one side supply liquid, and described outlet is discharged liquid from described downstream one side of described stream.
17. liquid-detecting as claimed in claim 1 is characterized in that,
Described body shell is to hold the part of the container of described liquid.
18. a liquid housing container is characterized in that, comprising:
Body shell is formed with liquid containing portion, the output stream that links with described liquid containing portion and the peristome that described output stream is exposed in the position of terminal one side of described output stream;
Sensor base by the described peristome of described body shell, is faced configuration with described output stream;
Sensor chip comprises piezoelectric element, described piezoelectric element be loaded in the face of described sensor base in the face of the opposite side of the face of described output stream on;
Film remains on described sensor base in the described peristome, and seals described peristome; And
The next door is partitioned into described output stream upstream one side and downstream one side in described body shell;
Wherein,
Described sensor chip has the sensor cavities of admittance as the liquid of detected object,
Described sensor base comprises: first hole guides described liquid from the upstream described sensor cavities of one side direction of described output stream; With second hole, from described sensor cavities to the downstream of described output stream one side directed described liquid,
On the depth direction of described peristome, described sensor base can only contact with described next door with position between second hole in described first hole of described sensor base.
19. a storage container is characterized in that, comprising:
Body shell is formed with liquid containing portion, the output stream that links with described liquid containing portion and the peristome that described output stream is exposed in the position of terminal one side of described output stream;
Sensor base by the described peristome of described body shell, is faced configuration with described output stream;
Sensor chip comprises piezoelectric element, described piezoelectric element be loaded in the face of described sensor base in the face of the opposite side of the face of described output stream on;
Film remains on described sensor base in the described peristome, and seals described peristome;
The stream wall is arranged in the described body shell, and relative with described sensor base; And
The next door is partitioned into described output stream upstream one side and downstream one side in described body shell;
Wherein,
Described sensor chip has the sensor cavities of admittance as the liquid of detected object,
Described sensor base comprises: first hole guides described liquid from the upstream described sensor cavities of one side direction of described output stream; With second hole, from described sensor cavities to the downstream of described output stream one side directed described liquid,
Described next door extending integratedly and forming from described sensor base or described stream wall to another person,
Be provided with the gap between another person of described next door and described sensor base or described stream wall, the flow path resistance in described gap is bigger than the flow path resistance in described first hole.
20. the manufacture method of a liquid-detecting is characterized in that,
Comprise following operation:
First operation, in the face of configuration, described sensor chip comprises piezoelectric element with the peristome of the sensor base that the is mounted with sensor chip body shell by being formed with stream and described stream;
Second operation, with film be deposited over described peristome around, the sensor base that will be mounted with sensor chip by described film is bearing on the described body shell and seals described peristome;
Wherein,
Described first operation comprises following operation: support described sensor base by the next door, described next door is partitioned into described stream upstream one side and downstream one side in described body shell,
By described first operation and described second operation, sensor cavities is communicated with upstream one side of described stream via first hole that is formed on the described sensor base, and be communicated with downstream one side of described stream via second hole that is formed on the described sensor base, thereby form the detection path of liquid, described sensor cavities is formed on the described sensor chip, and admits the liquid as detected object.
21. the manufacture method of liquid-detecting as claimed in claim 20 is characterized in that,
In described first operation, support described sensor base by aiding support portion with described next door,
In described second operation, described aiding support portion is not contacted with described sensor base.
22. a liquid-detecting is installed on the liquid housing container, described liquid housing container comprises and will be contained in the liquid supply port of the liquid of liquid housing container inside to the outside supply that described liquid-detecting is characterised in that, comprising:
Sensor chip; And
Be mounted with the sensor base of described sensor chip;
Wherein,
Described sensor chip comprises via peristome admits chamber as the liquid of detected object,
Described sensor base comprises: feed lines, supply described liquid from described peristome one side of described chamber; And discharge path, discharge described liquid from described peristome one side of described chamber;
Described sensor chip involving vibrations plate, described oscillating plate also can vibrate in the face of described chamber, and lamination has piezoelectric element on described oscillating plate,
Described liquid housing container has stream formation portion, and described stream formation portion is communicated with the described feed lines and the described discharge path of described liquid-detecting,
Described liquid-detecting is supported on the described liquid housing container by the next door, and be installed on the described liquid housing container by film, described next door is divided into described stream formation portion the supply stream and imports stream, the described feed lines of described supply stream road direction is supplied described liquid, and described importing stream imports described liquid from described discharge path.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007092181 | 2007-03-30 | ||
| JP2007092181 | 2007-03-30 | ||
| JP2007-092181 | 2007-03-30 | ||
| JP2007253419A JP5082723B2 (en) | 2007-03-30 | 2007-09-28 | Liquid detection device, liquid container using the same, and method for manufacturing liquid detection device |
| JP2007253419 | 2007-09-28 | ||
| JP2007-253419 | 2007-09-28 |
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| Publication Number | Publication Date |
|---|---|
| CN101391527A CN101391527A (en) | 2009-03-25 |
| CN101391527B true CN101391527B (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100880792A Expired - Fee Related CN101391527B (en) | 2007-03-30 | 2008-03-31 | Liquid detection device, method of producing liquid detection device, and liquid container using the same |
Country Status (2)
| Country | Link |
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| JP (1) | JP5082723B2 (en) |
| CN (1) | CN101391527B (en) |
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| JP4985302B2 (en) * | 2007-10-16 | 2012-07-25 | セイコーエプソン株式会社 | Liquid detection device and liquid container using the same |
| JP5326618B2 (en) * | 2008-03-12 | 2013-10-30 | セイコーエプソン株式会社 | Liquid detection device and liquid container using the same |
| JP5423008B2 (en) * | 2009-01-22 | 2014-02-19 | セイコーエプソン株式会社 | Sensor unit and liquid container |
| WO2017115584A1 (en) * | 2015-12-28 | 2017-07-06 | セイコーエプソン株式会社 | Liquid supply unit |
| CN106768183A (en) * | 2016-12-01 | 2017-05-31 | 上海航天设备制造总厂 | Two point form liquid level sensor for measuring Rocket tank volume loading liquid level |
| CN107901610A (en) * | 2017-12-19 | 2018-04-13 | 珠海智星荟科技服务有限公司 | A kind of ink-jet printer chip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1053881A1 (en) * | 1999-05-20 | 2000-11-22 | Seiko Epson Corporation | A liquid container having a liquid detecting device |
| CN1288150A (en) * | 1999-08-03 | 2001-03-21 | 多米诺印刷科学公开有限公司 | Liquid level sensor |
| CN1624435A (en) * | 2001-02-22 | 2005-06-08 | 明基电通股份有限公司 | Ink inventory detecting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4784087B2 (en) * | 2004-12-13 | 2011-09-28 | セイコーエプソン株式会社 | Mounting structure of liquid detection device and liquid container |
| JP4613667B2 (en) * | 2005-03-31 | 2011-01-19 | セイコーエプソン株式会社 | Liquid detection device, liquid container, and manufacturing method of liquid detection device |
-
2007
- 2007-09-28 JP JP2007253419A patent/JP5082723B2/en not_active Expired - Fee Related
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2008
- 2008-03-31 CN CN2008100880792A patent/CN101391527B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1053881A1 (en) * | 1999-05-20 | 2000-11-22 | Seiko Epson Corporation | A liquid container having a liquid detecting device |
| CN1288150A (en) * | 1999-08-03 | 2001-03-21 | 多米诺印刷科学公开有限公司 | Liquid level sensor |
| CN1624435A (en) * | 2001-02-22 | 2005-06-08 | 明基电通股份有限公司 | Ink inventory detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101391527A (en) | 2009-03-25 |
| JP2008273168A (en) | 2008-11-13 |
| JP5082723B2 (en) | 2012-11-28 |
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