CN106985528B - Liquid sprays module and fluid ejection head - Google Patents

Abstract

Offer can inhibit the non-uniform liquid of printing to spray module and fluid ejection head.Therefore, opening is arranged such that the center of at least one of multiple ejiction opening column opening is not arranged in along the same straight line that the moving direction of the print media of relative movement extends relative to the center of other openings.

Description

Liquid sprays module and fluid ejection head

Technical field

The present invention relates to the liquid of the liquid for spraying ink etc. to spray module and fluid ejection head.

Background technique

In ink jet printing device in recent years, liquid spray element be densely arranged in fluid ejection head, so as to The image of higher speed printing high quality.In the fluid ejection head, since access is intensively to configure compared with prior art , so the size of access reduces.

When the size of access reduces, when liquid flows through access, flow resistance be will increase, thus increase the pressure loss.For This, the negative pressure at ejiction opening increases, thus may will affect printing operation.For example, when negative pressure increases, the meniscus of ejiction opening It can be retracted towards the inside of ejiction opening, thus liquid spray volume becomes smaller than the liquid spray volume of lower negative pressure state.When liquid sprays Output hour, gradation of drop-out colour are lower, thus cannot obtain desired result.

Here, United States Patent (USP) No.7845763 discloses a kind of print head assembly, can exist by using such as flowering structure With high speed print image while the pressure loss as caused by flow resistance is suppressed to minimum: in this configuration, passing through and to the greatest extent may be used Energy ground supplies liquid close to the big access that type element extends, and is passed through the thin access near type element and supplies liquid Body.

When big access is connected to thin access, negative pressure is low at the ejiction opening of relatively close link position, but negative pressure with Its leave and increase from interconnecting piece.Confession disclosed in the United States Patent (USP) No.7845763 in structure, for different ejiction openings column It is arranged on print media conveying direction in same position to mouth.Thus, due to the spray with lower negative pressure in each ejiction opening column Outlet and the ejiction opening with high negative pressure are located at same position in the conveying direction, so being led by gradation of drop-out colour (printing is uneven) The deep or light same position for appearing in nozzle row caused, thus emphasize and to easily identify out this deep or light.

Summary of the invention

Therefore, the purpose of the present invention is to provide be able to suppress the non-uniform liquid of printing to spray module and fluid ejection head.

In order to obtain above-mentioned purpose, according to the present invention, a kind of liquid is provided and sprays module comprising from ejiction opening to opposite The print media moved sprays the type element substrate of liquid, and ejiction opening connects with the access being set in type element substrate Logical, multiple ejiction openings are arranged along the access and are formed along the side that the moving direction with the print media of relative movement intersects It is arranged to the ejiction opening of extension, the type element substrate for being provided with multiple row ejiction opening column includes corresponding to the logical of each ejiction opening column Road and the multiple openings being connected to access, and the position of centre of gravity of at least one of opening opening is arranged to relative to other The position of centre of gravity of opening deviates the same straight line extended along the moving direction of the print media of relative movement.

According to invention in a first aspect, providing a kind of liquid sprays module, it is used in from ejiction opening to relatively moving Print media sprays in the page width formula fluid ejection head of liquid, and it includes: type element substrate that the liquid, which sprays module, comprising First ejiction opening column and the second ejiction opening column and the first liquid supply path and second liquid feed path, in first spray In outlet column and second ejiction opening column, the direction intersected along the direction with the relative movement is arranged with the spray for spraying liquid Outlet, the first liquid supply path and second liquid feed path are respectively to first ejiction opening column and second ejiction opening Column supply liquid and extend respectively along the direction of the intersection；And the first opening and the second opening, respectively with first liquid Body feed path is connected to respectively to first liquid supply path and second liquid with the second liquid feed path Body feed path supplies liquid, wherein the deviation of gravity center of the center of gravity of first opening and second opening is along described opposite The straight line that mobile direction extends.

According to the second aspect of invention, a kind of fluid ejection head is provided, is formed page width formula and from ejiction opening to phase Liquid is sprayed to the print media moved, the fluid ejection head includes: type element substrate comprising the first ejiction opening column With the second ejiction opening column and the first liquid supply path and second liquid feed path, in first ejiction opening column and described In second ejiction opening column, along and the direction that intersects of direction of the relative movement be arranged with the ejiction opening of ejection liquid, described the One liquid supply path and the second liquid feed path are respectively to first ejiction opening column and second ejiction opening column It supplies liquid and extends respectively along the direction of the intersection；The lid component comprising described in the first opening and the second opening and formation A part of first liquid supply path and the second liquid feed path, first opening and the second opening difference It is connected to first liquid supply path and the second liquid feed path respectively to first liquid supply path Liquid is supplied with the second liquid feed path, wherein the center of gravity of the center of gravity of first opening and second opening is inclined From the straight line extended along the direction of the relative movement.

According to the third aspect of invention, a kind of fluid ejection head is provided comprising beat from ejiction opening to what is relatively moved Print multiple type element substrates that medium sprays liquid, the ejiction opening be set to the type element substrate and edge and described The access connection that the direction that the direction of relative movement intersects extends, multiple ejiction openings form multiple row along the access and spray Mouthful column, be provided with multiple row ejiction opening column the type element substrate include corresponding to each ejiction opening column the access and To multiple openings of access supply liquid, and the position of centre of gravity of at least one of described opening opening is relative to including The position of centre of gravity of opening in other ejiction openings column deviates the moving direction extension along the print media of relative movement Same straight line.

Module and fluid ejection head are sprayed in accordance with the invention it is possible to realize and be able to suppress the non-uniform liquid of printing.

By the way that the explanation of illustrative embodiments (referring to attached drawing), other feature of the invention be will be apparent below.

Detailed description of the invention

Fig. 1 is the figure for showing the schematic configuration for the liquid discharge apparatus for spraying liquid；

Fig. 2 is the schematic diagram for showing the first circulation mode suitable for the circulating path of printing device；

Fig. 3 is the schematic diagram for showing the second circulation mode suitable for the circulating path of printing device；

Fig. 4 is the schematic diagram of the difference shown to the black influx of fluid ejection head；

Fig. 5 A is the perspective view for showing fluid ejection head；

Fig. 5 B is the perspective view for showing fluid ejection head；

Fig. 6 is the exploded perspective view for showing the component or unit that constitute fluid ejection head；

Fig. 7 be show the first passage member to third path component front and back figure；

Fig. 8 is perspective view when from spraying module mounting surface for showing the part α of Fig. 7 (a)；

Fig. 9 is the sectional view intercepted along the line IX-IX of Fig. 8；

Figure 10 A is the perspective view for showing an ejection module；

Figure 10 B is the exploded view for showing an ejection module；

Figure 11 A is the figure for showing type element substrate；

Figure 11 B is the figure for showing type element substrate；

Figure 11 C is the figure for showing type element substrate；

Figure 12 is the perspective view for showing the section of type element substrate and The lid component；

Figure 13 is the partly enlarged top view of the adjacency section of type element substrate；

Figure 14 A is the perspective view for showing fluid ejection head；

Figure 14 B is the perspective view for showing fluid ejection head；

Figure 15 is the strabismus decomposition figure for showing fluid ejection head；

Figure 16 is the figure for showing the first passage member；

Figure 17 is the perspective view for showing the liquid connection relationship between type element substrate and passage member；

Figure 18 is the sectional view intercepted along the line XVIII-XVIII of Figure 17；

Figure 19 A is the perspective view for showing an ejection module；

Figure 19 B is the perspective view for showing an ejection module；

Figure 20 is the schematic diagram for showing type element substrate；

Figure 21 is shown by spraying liquid come the figure of the ink jet printing device of print image；

Figure 22 A is the figure for showing the liquid ejection module of printing device；

Figure 22 B is the figure for showing the liquid ejection module of printing device；

Figure 23 A is the figure for showing the structure of type element substrate；

Figure 23 B is the figure for showing the structure of type element substrate；

Figure 23 C is the figure for showing the structure of type element substrate；

Figure 24 A is the figure for showing the relationship between the aperture position of The lid component and corresponding gradation of drop-out colour；

Figure 24 B is the figure for showing the relationship between the aperture position of The lid component and corresponding gradation of drop-out colour；

Figure 25 A is the figure for showing liquid the ejection module and fluid ejection head of printing device；

Figure 25 B is the figure for showing liquid the ejection module and fluid ejection head of printing device；

Figure 25 C is the figure for showing liquid the ejection module and fluid ejection head of printing device；

Figure 26 A is the figure for showing the structure of type element substrate；

Figure 26 B is the figure for showing the structure of type element substrate；

Figure 26 C is the figure for showing the structure of type element substrate；

Figure 27 A is the figure for showing the relationship between the aperture position of The lid component and corresponding gradation of drop-out colour；

Figure 27 B is to exemplify figure when from The lid component with opening of various shapes；

Figure 28 is the figure for showing the printing device according to the first Application Example；

Figure 29 is the figure for showing third circulation pattern；

Figure 30 A is the figure for showing the variation example of the fluid ejection head according to the first Application Example；

Figure 30 B is the figure for showing the variation example of the fluid ejection head according to the first Application Example；

Figure 31 is the figure for showing the variation example of the fluid ejection head according to the first Application Example；

Figure 32 is the figure for showing the variation example of the fluid ejection head according to the first Application Example；

Figure 33 is the figure for showing the printing device according to third Application Example；

Figure 34 is the figure for showing the 4th circulation pattern；

Figure 35 A is the figure for showing the fluid ejection head according to third Application Example；

Figure 35 B is the figure for showing the fluid ejection head according to third Application Example；

Figure 36 A is the figure for showing the fluid ejection head according to third Application Example；

Figure 36 B is the figure for showing the fluid ejection head according to third Application Example；

Figure 36 C is the figure for showing the fluid ejection head according to third Application Example.

Specific embodiment

Hereinafter, illustrating the first Application Example and the second Application Example of the invention with reference to the accompanying drawings.

(the first Application Example)

(explanation of ink jet printing device)

Fig. 1 is that the figure for the schematic configuration of liquid discharge apparatus for showing ejection liquid of the invention is particularly to show By spraying ink come the figure of the schematic configuration of the ink jet printing device (hereinafter, also referred to printing device) 1000 printed.Printing Equipment 1000 includes: supply unit 1, conveys print media 2；With line (page width formula) fluid ejection head 3, be arranged to The conveying direction of print media 2 is substantially vertical.Then, printing device 1000 is line printing equipment, by it is continuous or Ink is ejected on the print media 2 relatively moved while conveying print media 2 disconnectedly and is continuously beaten in primary pass through Watermark image.Fluid ejection head 3 includes: vacuum cavitations unit 230, the pressure (negative pressure) in control loop path；Liquid supply Unit 220 is connected to vacuum cavitations unit 230 and allows fluid in fluid supply unit 220 and vacuum cavitations unit 230 Between flow；Fluid connection 111 is used as the black supply mouth and ink outlet of fluid supply unit 220；With shell 80.It beats Print medium 2 is not limited to single-sheet stationery, can also be continuous web media (roll medium).

Fluid ejection head 3 can print color image, and liquid by the ink of cyan C, magenta M, yellow Y and black K Body ejecting head 3 is fluidly connected to be used as liquid supplying member, the main liquid storage device that the feed path of liquid is supplied to fluid ejection head 3 With buffer reservoir (referring to Fig. 2 described later on).In addition, being supplied electric power to fluid ejection head 3 and transmitting ejection control signal Control unit be electrically connected to fluid ejection head 3.By the liquid path and electrical signal path in fluid ejection head 3 described later on.

Printing device 1000 is to recycle the liquid of ink etc. between liquid storage device and fluid ejection head 3 described later on Ink jet printing device.Circulation pattern includes: first circulation mode, and in first circulation mode, liquid is sprayed by being located at liquid Lift one's head 3 downstream side two circulating pumps (for high pressure and low pressure) starting and recycle；With second circulation mode, followed second In ring mode, liquid passes through the starting of two circulating pumps (being used for high pressure and low pressure) positioned at the upstream side of fluid ejection head 3 Circulation.Hereinafter, the first circulation mode and second circulation mode that will illustrate circulation.

(explanation of first circulation mode)

Fig. 2 is the signal for showing the first circulation mode suitable for the circulating path of the printing device 1000 of this Application Example Figure.Fluid ejection head 3 is fluidly connected to first circulation pump (high-pressure side) 1001, first circulation pump (low-pressure side) 1002 and buffering storage Liquid device 1003.In addition, to simplify the explanation, being shown for one of cyan C, magenta M, yellow Y and black K in Fig. 2 The path that the ink of color flows through.However, in fact, following there are four types of color is arranged in fluid ejection head 3 and printing device main body Endless path.

In first circulation mode, the ink in main liquid storage device 1006 is supplied to by buffer reservoir by make-up pump 1005 In 1003, then ink is set to pass through fluid supply unit of the fluid connection 111 to fluid ejection head 3 by second circulation pump 1004 220 supplies.Then, two different negative pressure are adjusted in the vacuum cavitations unit 230 by being connected to fluid supply unit 220 While the ink of (high pressure and low pressure) is divided into the two paths with high pressure and low pressure, recycle the ink.In fluid ejection head 3 Ink by be located at fluid ejection head 3 downstream side first circulation pump (high-pressure side) 1001 and first circulation pump (low-pressure side) 1002 act in fluid ejection head recycles, passes through fluid connection 111 from the discharge of fluid ejection head 3 and return to buffering storage Liquid device 1003.

Buffer reservoir 1003 as secondary liquid storage device is connected to main liquid storage device 1006 and (does not show including atmosphere connection port Out), so that the inside of liquid storage device is connected to outside, it is thus possible to which the bubble in ink to be discharged to the outside.Make-up pump 1005 is arranged Between buffer reservoir 1003 and main liquid storage device 1006.In ink due to being sprayed in printing operation and suction recycling movement from liquid 3 ejiction opening of lifting one's head sprays (discharge) after being consumed ink, and Mo Congzhu liquid storage device 1006 is transmitted to slow by make-up pump 1005 Rush liquid storage device 1003.

Two first circulation pumps 1001 and 1002 draw liquid from the fluid connection 111 of fluid ejection head 3, so that liquid Flow to buffer reservoir 1003.It is pumped as first circulation, the positive displacement pump with quantitative liquid transfer capability is desired.Specifically Ground can exemplify tube pump, gear pump, diaphragm pump and syringe pump.However, for example, can arrange routine in the exit of pump The safety valve of permanent flow valve or routine, to ensure predetermined amount of flow (rate).When fluid ejection head 3 is driven, first circulation pump is (high Press side) 1001 and first circulation pump (low-pressure side) 1002 act so that ink with predetermined amount of flow flow through common feed access 211 and altogether With recovery passage 212.Since ink flows in this way, so the temperature of fluid ejection head 3 is maintained at during printing operation Optimum temperature.It is expected that predetermined amount of flow when fluid ejection head 3 is driven is set equal to or is higher than such as down-off: in the flow Under, the temperature difference between type element substrate 10 in fluid ejection head 3 does not influence print quality.

Especially, when setting excessively high flow, the Negative Pressure Difference between type element substrate 10 can be because of liquid spray unit The influence of the pressure loss of access in 300 and increase, thus lead to uneven concentration.For this purpose, considering type element substrate Temperature difference and Negative Pressure Difference between 10, it is expected that setting flow.

Vacuum cavitations unit 230 is arranged in the path between second circulation pump 1004 and liquid spray unit 300.Negative pressure Control unit 230 be manipulated into even if when ink flow change in the circulatory system because of the difference of per unit area spray volume when, Also the pressure (that is, pressure near liquid spray unit 300) in the downstream side of vacuum cavitations unit 230 is maintained into pre- level pressure Power.As two negative pressure controls for constituting vacuum cavitations unit 230, any mechanism can be used, as long as can be by negative pressure The pressure control in the downstream side of control unit 230 is in the preset range for deviateing expectation setting pressure or smaller.

As an example, can be using the mechanism of so-called " pressure reducing regulator " etc..In the circulation path of this Application Example In, the upstream side of vacuum cavitations unit 230 is by fluid supply unit 220 by 1004 pressurization of second circulation pump.Utilize the structure It makes, due to being able to suppress influence of the buffer reservoir 1003 relative to the head pressure of fluid ejection head 3, is beaten so can widen The freedom degree of the layout of the buffer reservoir 1003 of printing apparatus 1000.

As second circulation pump 1004, it is able to use turbine pump or positive displacement pump, as long as pre- when fluid ejection head 3 is driven Determining head pressure (head pressure) or bigger pressure can be presented in the range of used black circular flow.Tool Body, it is able to use diaphragm pump.In addition, for example, can also use be arranged to relative to vacuum cavitations unit 230 have it is certain Head difference head liquid storage device replace second circulation pump 1004.As shown in Fig. 2, vacuum cavitations unit 230 includes being respectively provided with Two negative pressure regulating mechanisms of difference control pressure.In two negative pressure regulating mechanisms, " H " table (is used in relatively high pressure side in Fig. 2 Show) and relatively low pressure side (in Fig. 2 with " L " indicate) liquid spray unit 300 is connected to by fluid supply unit 220 respectively Interior common feed access 211 and shared recovery passage 212.

Liquid spray unit 300 be provided with common feed access 211, share recovery passage 212 and with type element substrate The independent path 215 (being independently supplied access 213 and independent recovery passage 214) of connection.Negative pressure control H is connected to shared confession To access 211, negative pressure control L is connected to shared recovery passage 212, and forms pressure difference between two shared paths. Then, be connected to due to independent path 215 with shared supply passageway 211 and shared recovery passage 212, thus generate as flow down (by The stream that the arrow direction of Fig. 2 indicates): a part of liquid is passed through the access in type element substrate 10 from common feed Access 211 is flowed to shared recovery passage 212.

In this way, liquid spray unit 300 has as flowed down: when liquid is flowed to pass through common feed access 211 When with shared recovery passage 212, a part of liquid passes through type element substrate 10.For this purpose, can be by flowing through common feed The heat generated by type element substrate 10 is discharged to type element substrate 10 by the ink of access 211 and shared recovery passage 212 It is external.Using the construction, even if in the pressure chamber or the ejiction opening that do not spray liquid when passing through 3 print image of fluid ejection head In, it can also generate the stream of ink.Therefore, the change of ink can be inhibited in a manner of the viscosity of the ink of retrogradation in ejiction opening to reduce It is thick.Furthermore it is possible to towards the foreign matter in the ink or ink of shared recovery passage 212 discharge retrogradation.For this purpose, the liquid of this Application Example sprays Lifting one's head 3 can be with high speed print high quality images.

(explanation of second circulation mode)

Fig. 3 be show suitable for the circulating path of the printing device of this Application Example as different from first circulation mode Circulation pattern second circulation mode schematic diagram.It is with the main distinction of first circulation mode, constitutes vacuum cavitations list The pressure control of the upstream side of vacuum cavitations unit 230 is being deviateed expectation setting pressure by two negative pressure controls of member 230 In the preset range of power.In addition, with first circulation mode another difference is that, second circulation pump 1004 be used as reduce negative pressure control The negative pressure source of the pressure in the downstream side of unit 230 processed.In addition, also a difference is that first circulation pumps (high-pressure side) 1001 and the The upstream side of fluid ejection head 3 is arranged in one circulating pump (low-pressure side) 1002, and vacuum cavitations unit 230 is arranged in fluid ejection head 3 downstream side.

In second circulation mode, the ink in main liquid storage device 1006 is supplied to by buffer reservoir by make-up pump 1005 1003.Then, ink is divided by two paths by the effect for the vacuum cavitations unit 230 being arranged in fluid ejection head 3, and Recycle ink in the two paths for being located at high-pressure side and low-pressure side.(high-pressure side) 1001 and first circulation are pumped by first circulation The effect for pumping (low-pressure side) 1002, the ink being divided into the two paths of high-pressure side and low-pressure side pass through fluid connection 111 supply to fluid ejection head 3.Then, make to pump (high-pressure side) 1001 and the by first circulation by vacuum cavitations unit 230 The effect of one circulating pump (low-pressure side) 1002 and the ink that recycles in fluid ejection head passes through fluid connection 111 and sprays from liquid First 3 discharge.Make the ink of discharge back to buffer reservoir 1003 by second circulation pump 1004.

In second circulation mode, even if when flow changes because of the variation of per unit area spray volume, vacuum cavitations Unit 230 can also be such that the pressure change stabilization of the upstream side (that is, liquid spray unit 300) of vacuum cavitations unit 230 is deviateing In the preset range of predetermined pressure.In the circulation path of this Application Example, the downstream side of vacuum cavitations unit 230 is supplied by liquid To unit 220 by 1004 pressurization of second circulation pump.Using the construction, due to being able to suppress buffer reservoir 1003 relative to liquid The influence of the head pressure of body ejecting head 3, so layout of the buffer reservoir 1003 in printing device 1000 can have perhaps More options.

For example, the head liquid storage for being arranged to and there is predetermined head difference relative to vacuum cavitations unit 230 can also be used Device replaces second circulation pump 1004.Same as first circulation mode, in second circulation mode, vacuum cavitations unit 230 includes It is respectively provided with two negative pressure controls of different control pressure.In two negative pressure regulating mechanisms, high-pressure side (is used in Fig. 3 " H " is indicated) and low-pressure side (in Fig. 3 with " L " expression) pass through fluid supply unit 220 respectively and be connected to liquid spray unit Common feed access 211 or shared recovery passage 212 in 300.When by two negative pressure regulating mechanisms by common feed access When 211 pressure is set higher than the pressure of shared recovery passage 212, is formed from common feed access 211 and pass through independent path 215 and the stream of the liquid for being routed to shared recovery passage 212 that is formed in type element substrate 10.

In the second circulation mode, liquid identical with first circulation mode can be obtained in liquid spray unit 300 Body stream, but have the advantages that two different from first circulation mode.As the first advantage, in second circulation mode, due to Vacuum cavitations unit 230 is arranged in the downstream side of fluid ejection head 3, so what seldom worry was generated by vacuum cavitations unit 230 Foreign matter or waste can influent ejecting heads 3.As the second advantage, in second circulation mode, liquid is from buffer reservoir 1003 are less than the maximum value of first circulation mode to the maximum value of flow necessary to fluid ejection head 3.The reason is as follows that.

In the case where the circulation in printing standby mode, by common feed access 211 and shared recovery passage 212 Flow and it is set as flow A.The value of flow A is defined as minimum discharge: being sprayed to liquid is adjusted in the case where printing standby mode 3 temperature of lifting one's head makes the temperature difference in liquid spray unit 300 fall in necessary minimum discharge in expected range.In addition, The ejection flow obtained when spraying black (spraying state entirely) from all ejiction openings of liquid spray unit 300 is defined as flow F (each ejiction opening spray volume × ejection frequency × ejiction opening quantity) per unit time.

Fig. 4 is the difference for showing the black influx to fluid ejection head 3 between first circulation mode and second circulation mode Different schematic diagram.The part (a) of Fig. 4 shows the standby mode in first circulation mode, and the part (b) of Fig. 4 shows first circulation Full ejection state in mode.The part (c) of Fig. 4 to part (f) shows second circulation access.Here, the part (c) of Fig. 4 and Partially (d) shows the case where flow F is lower than flow A, and the part (e) and part (f) of Fig. 4 shows the feelings that flow F is higher than flow A Condition.In this way, the flow under standby mode and full ejection state is shown.

Liquid spray is arranged in the first circulation pump 1001 and first circulation pump 1002 for all having quantitative liquid transfer capability Lift one's head 3 downstream sides first circulation mode the case where (part (a) of Fig. 4 and part (b)) under, first circulation pump 1001 and first The total flow of circulating pump 1002 is flow A.By flow A, can manage in liquid spray unit 300 in the standby state Temperature.Then, in the case where the full ejection state of fluid ejection head 3, first circulation pump 1001 and first circulation pump 1002 Total flow is flow A.However, the maximum stream flow for being supplied to the liquid of fluid ejection head 3 obtains as follows: by by The effect for the negative pressure that the ejection of fluid ejection head 3 generates, the full flow F for spraying consumption are added with the flow A of total flow.Thus, Since flow F is added (part (b) of Fig. 4) with flow A, so that the maximum value of supply amount of fluid ejection head 3 meets flow A The relationship of+flow F.

Meanwhile the second of the upstream side of fluid ejection head 3 is arranged in first circulation pump 1001 and first circulation pump 1002 It is same as first circulation mode under the case where circulation pattern (part (c) of Fig. 4 to part (f)), it must to printing standby mode The supply amount to fluid ejection head 3 needed is flow A.Thus, when in 1002 arrangement of first circulation pump 1001 and first circulation pump When flow A is higher than (part (c) and part (d) of Fig. 4) flow F in the second circulation mode of the upstream side of fluid ejection head 3, Even if being sufficient in full ejection state down toward the supply amount of fluid ejection head 3 for flow A.At this point, the discharge of fluid ejection head 3 Flow meets the relationship (part (d) of Fig. 4) of flow A- flow F.

However, when flow F is higher than (part (e) of Fig. 4 and the part (f)) flow A, when being supplied under full ejection state Flow can be insufficient when the flow of the liquid of fluid ejection head 3 is flow A.For this purpose, needing near liquid when flow F is higher than flow A The supply amount of body ejecting head 3 is set as flow F.At this point, due to the meeting of fluid ejection head 3 consumed flow F, institute under full ejection state The flow of liquid to be discharged from fluid ejection head 3 is almost nil (part (f) of Fig. 4).In addition, if when flow F is higher than stream Liquid is then discharged from fluid ejection head 3 not to spray state ejection entirely and subtracts the liquid measured consumed by ejection by flow F when measuring A Body.In addition, when flow A and flow F are equal to each other, to 3 supply flow rate A (or flow F) of fluid ejection head, fluid ejection head 3 Consumed flow F.For this purpose, the flow being discharged from fluid ejection head 3 is almost nil.

In this way, in the case where second circulation mode, first circulation pump 1001 and first circulation pump 1002 are set The aggregate value of fixed flow, the maximum value of i.e. necessary supply flow rate are the big value in flow A and flow F.As long as this purpose, using tool There is the liquid spray unit 300 of same structure, then to maximum value (flow A or the stream of supply amount necessary to second circulation mode Measure F) less than the maximum value (flow A+ flow F) to supply flow rate necessary to first circulation mode.

For this purpose, improving the freedom degree of circulating pump applicatory in the case where second circulation mode.For example, can make With the circulating pump with simple structure and low cost, or the cooler (not shown) being arranged in main body side path can be reduced Load.The advantages of accordingly, there exist the costs that can reduce printing device.In the row of flow A or flow F with relatively large value In formula head, which is significant.Therefore, in line head, it is beneficial for having the line head of long length direction length.

Meanwhile first circulation mode is more advantageous than second circulation mode.That is, in second circulation mode, due to printing to The maximum flow of the liquid of liquid spray unit 300 is flowed through under machine state, so as image is (hereinafter, also referred to low duty ratio Image (low-duty image)) per unit area spray volume it is smaller and smaller, to ejiction opening apply negative pressure it is higher and higher.For This applies ejiction opening in the low duty ratio image for being easy to appear inhomogeneities high negative when duct width is narrow and negative pressure is high Pressure.Therefore, worry along with the quantity of so-called satellite droplet (satellite droplet) sprayed together with the main drop of ink Increase, print quality may deteriorate.

Meanwhile in the case where first circulation mode, due to having the image of big per unit area spray volume when formation High negative pressure is applied to ejiction opening when (hereinafter, also referred to high duty ratio image), so even if also depositing when generating many satellite droplets In the small advantage of influence of the satellite droplet to image.It can be in the specification (discharging jet for considering fluid ejection head and printing device main body Passage resistance in amount F, minimal circulation flow A and head) in the case where desirably select two kinds of circulation patterns.

(explanation of third circulation pattern)

Figure 29 is a circulating path in the circulating path for being shown as using in the printing device of embodiment The schematic diagram of third circulation pattern.It will omit and said with first circulation path and the identical function and construction in second circulation path It is bright, and will only illustrate to distinguish.

In circulating path, liquid is fed into fluid ejection head 3 from following three position: these three positions include liquid The one end of two positions and fluid ejection head 3 of the central portion of ejecting head 3.Each pressure chamber is flowed to from common feed access 211 The shared recovery passage 212 of 23 liquid recycles, and is recovered to from the recovery port at the other end for being located at fluid ejection head 3 It is external.It is independently supplied access 213 to be connected to shared supply passageway 211 and shared recovery passage 212, and type element substrate 10 It is arranged in the path for being independently supplied access 213 with the pressure chamber 23 being arranged in type element substrate.Therefore, from first circulation A part of the liquid of 1002 outflow of pump is while passing through pressure chamber 23 of type element substrate 10 from common feed access 211 It is flowed to shared recovery passage 212, and flows (9 arrows referring to fig. 2).This is because being connected to common feed access Pressure difference, and are produced between 211 pressure adjustmenting mechanism H and the pressure adjustmenting mechanism L for being connected to shared recovery passage 212 One circulating pump 1002 is connected only to share recovery passage 212.

In this way, it in liquid spray unit 300, produces the stream of following liquid: passing through and share recovery passage 212 Liquid stream, and pass through each type element substrate 10 in pressure chamber 23 while from common feed access 211 to altogether With the stream for the liquid that recovery passage 212 flows.For this purpose, can be while inhibiting the pressure loss, by from common feed access The heat generated by each type element substrate 10 is discharged to the outer of type element substrate 10 to the stream for sharing recovery passage 212 by 211 Portion.In addition, compared with first circulation path and second circulation path, can reduce according to circulating path and transmit list as liquid The quantity of the pump of member.

(explanation of the construction of fluid ejection head)

By explanation according to the construction of the fluid ejection head 3 of the first Application Example.Fig. 5 A and Fig. 5 B are to show according to this application example Fluid ejection head 3 perspective view.Fluid ejection head 3 is line fluid ejection head, wherein on a type element substrate 10 In series configuration (linear configurations) can spray cyan C, magenta M, four kinds of colors of yellow Y and black K ink 15 beat Printing elements substrate 10.As shown in Figure 5A, fluid ejection head 3 includes type element substrate 10, signal input terminal 91 and feeder ear Son 92, signal input terminal 91 and power supply terminal 92 pass through flexible circuit board 40 and electrical wiring substrate 90 and type element substrate 10 It is electrically connected to each other, electrical wiring substrate 90 can be to 10 supply of electrical energy of type element substrate.

Signal input terminal 91 and power supply terminal 92 are electrically connected to the control unit of printing device 1000, so as to first to printing The supply of part substrate 10 sprays driving signal and electric power necessary to spraying.Match when having by the circuit integration in electrical wiring substrate 90 When line, the quantity of signal input terminal 91 and power supply terminal 92 can be fewer than the quantity of type element substrate 10.Therefore, reduce The quantity of electric connecting part to be separated when fluid ejection head 3 to be assembled into printing device 1000 or replace fluid ejection head.

As shown in Figure 5 B, the fluid connection 111 that the both ends of fluid ejection head 3 are arranged in is connected to printing device 1000 Liquid-supplying system.Therefore, from the feed system of printing device 1000 to fluid ejection head 3 supply include cyan C, magenta M, The ink of four kinds of colors of yellow Y and black K, and recycled by the feed system of printing device 1000 across fluid ejection head 3 Ink.It is followed in this way it is possible to which the ink of different colours is made to pass through the path of printing device 1000 and the path of fluid ejection head 3 Ring.

Fig. 6 is the exploded perspective view for showing the component or unit that constitute fluid ejection head 3.Liquid spray unit 300, liquid Feed unit 220 and electrical wiring substrate 90 are attached to shell 80.Fluid connection 111 (referring to Fig. 3) setting supplies single in liquid In member 220.In addition, setting is for different colours in fluid supply unit 220 in order to remove the foreign matter in supplied ink Filter 221 (referring to figs. 2 and 3), while the open communication of filter 221 and interconnecting piece 111.Correspond respectively to two kinds of colors Two fluid supply units 220 be provided with filter 221.It is fed into across the liquid of filter 221 and is arranged in liquid The vacuum cavitations unit 230 of feed unit 220, fluid supply unit 220 are arranged to correspond to each color.

Vacuum cavitations unit 230 be include different colours negative pressure control valve unit.Pass through the spring being disposed therein The function of component or valve significantly reduces the feed system (position of the printing device 1000 as caused by the variation of the flow of liquid Feed system in the upstream side of fluid ejection head 3) in the pressure loss variation.Therefore, vacuum cavitations unit 230 can make Negative pressure variation positioned at the downstream side (300 side of liquid spray unit) of vacuum cavitations unit 230 is stablized within a predetermined range.Such as figure Described in 2, vacuum cavitations unit 230 is built-in with two negative pressure control valves of different colours.Two negative pressure control valves are individually set For different control pressure.Here, the shared confession in high-pressure side and liquid spray unit 300 is made by fluid supply unit 220 It is connected to access 211 (referring to fig. 2) and is connected to low-pressure side (referring to fig. 2) with shared recovery passage 212.

Shell 80 includes liquid spray unit support section 81 and electrical wiring substrate support 82, and shell 80 is supporting Ensure the rigidity of fluid ejection head 3 while liquid spray unit 300 and electrical wiring substrate 90.Electrical wiring substrate support 82 is used Liquid spray unit support portion 81 is fixed in support electrical wiring substrate 90 and by screw.Liquid spray unit support portion 81 is used In the warpage or deformation of correction liquid spray unit 300, to ensure the relative positional accuracy between type element substrate 10.Cause This, it is suppressed that the striped and inhomogeneities of print media.

For this reason, it may be desirable to which liquid spray unit support portion 81 has enough rigidity.As material, be contemplated to be such as SUS or The ceramics of the metal or aluminium oxide of aluminium etc. etc..Liquid spray unit support portion 81 is provided with to be inserted into for connector rubber 100 Opening 83 and 84.The liquid supplied from fluid supply unit 220 passes through connector rubber and is directed into composition liquid spray unit 300 third path component 70.

Liquid spray unit 300 includes multiple ejection modules 200 and passage member 210, and cover component 130 is attached to liquid spray The face being located near print media in unit 300 out.Here, cover component 130 be it is as shown in FIG. 6 have phase frame-shaped surface and It is provided with the component of elongated opening 131, and including spraying type element substrate 10 and containment member 110 in module 200 (referring to Figure 10 A described later on) exposes from opening 131.The periphery frame portion of opening 131 is used as to be covered in the case where printing standby mode The contact surface of the cover component of fluid ejection head 3.For this reason, it may be desirable to pass through periphery coating adhesive, sealing material along opening 131 The enclosure space being formed under the state of covering with packing material is recessed in the ejection port face to fill liquid spray unit 300 Convex or gap.

Next, including the construction of passage member 210 in liquid spray unit 300 by explanation.As shown in fig. 6, logical Road component 210 is obtained by the first passage member 50 of stacking, alternate path component 60 and third path component 70, and access Component 210 distributes the liquid supplied from fluid supply unit 220 to module 200 is sprayed.In addition, passage member 210 is made from spray The liquid that module 200 recycles out returns to 220 passage member of fluid supply unit.Passage member 210 is fixed to by screw Liquid spray unit support portion 81, thus inhibit the warpage or deformation of passage member 210.

The part (a) of Fig. 7 to part (f) is the front and back for showing the first passage member to third path component Figure.The part (a) of Fig. 7 shows the face installed for spraying module 200 in the first passage member 50, and the part (f) of Fig. 7 is shown The face contacted for liquid spray unit support portion 81 in third path component 70.First passage member 50 and alternate path structure Part 60 is so that the part of the contact surface shown in the part (b) and part (c) of Fig. 7 and corresponding to passage member is facing with each other Mode is engaged with each other, and alternate path component and third path component are so that shown in the part (d) and part (e) of Fig. 7 and right Mode that should be facing with each other in the part of the contact surface of passage member is engaged with each other.When alternate path component 60 and third path structure When part 70 is engaged with each other, eight of the length direction extension along passage member are formed by the shared path slot 62 and 71 of passage member A shared path (211a, 211b, 211c, 211d, 212a, 212b, 212c, 212d).

Therefore, the group of common feed access 211 and shared recovery passage 212 is formed in access structure corresponding to each color In part 210.Ink is supplied from common feed access 211 to fluid ejection head 3, and by sharing the recycling supply of recovery passage 212 To the ink of fluid ejection head 3.The hole of communication port 72 (referring to the part (f) of Fig. 7) and connector rubber 100 of third path component 70 Connection, and the communication port 72 is fluidly connected to fluid supply unit 220 (referring to Fig. 6).Sharing for alternate path component 60 is logical The bottom surface of road slot 62 be provided with multiple communication ports 61 (the communication port 61-1 that is connected to shared supply passageway 211 and with shared recycling The communication port 61-2 that access 212 is connected to) and be connected to one end of the independent path slot 52 of the first passage member 50.First access structure The other end of the independent path slot 52 of part 50 is provided with communication port 51, and is fluidly connected to spray module by communication port 51 200.By independent path slot 52, the center side of passage member can be densely arranged in access.

It is expected that the first passage member is to third path component by with the corrosion resistance relative to liquid and with low linear The material of the coefficient of expansion is formed.For example, can be suitably used by filling out the inorganic of fiber or silicon dioxide microparticle etc. Material is added to aluminium oxide, LCP (liquid crystal polymer), PPS (polyphenylene sulfide), PSF (polysulfones) or MODIFIED PP E (polyphenylene oxide) etc. Substrate and the composite material (resin) that obtains as material.Three passage members bonding that is stacked on one another can be made logical as being formed The method of road component 210.When selecting resin composite materials as material, the joint method using welding can be used.

Fig. 8 is enlarged fragmentary perspective when from the face for spraying the installation of module 200 in the first passage member 50 Figure, which shows the part α of the part (a) of Fig. 7, and shows by making the first passage member to the Three-way component is engaged with each other and the access in the passage member 210 that is formed.So that common feed access 211 and shared recycling Access 212 forms common feed access 211 and shared recovery passage 212 from the mode that the access at both ends is alternately arranged.Here, It will illustrate the connection relationship between the access in passage member 210.

Passage member 210 be provided with along fluid ejection head 3 length direction extension common feed access 211 (211a, 211b, 211c, 211d) and shared recovery passage 212 (212a, 212b, 212c, 212d) and it is arranged for each color.By What independent path slot 52 was formed, which be independently supplied access 213 (213a, 213b, 213c, 213d), is connected to difference by communication port 61 The common feed access 211 of color.In addition, formed by independent path slot 52 independent recovery passage 214 (214a, 214b, 214c, 214d) the shared recovery passage 212 of different colours is connected to by communication port 61.Using the passway structure, ink can be made The type element for being independently supplied 213 concentrated supply of access to the central portion for being located at passage member is passed through from common feed access 211 Substrate 10.The recycling of 212 ground of recovery passage is shared furthermore it is possible to pass through independent recovery passage 214 from type element substrate 10 and reach Ink.

Fig. 9 is the sectional view intercepted along the line IX-IX of Fig. 8.Independent recovery passage (214a, 214c) passes through communication port 51 It is connected to module 200 is sprayed.In Fig. 9, independent recovery passage (214a, 214c) is illustrated only, but in different cross sections In, it communicates with each other as shown in figure 8, being independently supplied access 213 and spraying module 200.Including the support in each ejection module 200 Component 30 and type element substrate 10 are provided with such as underpass: ink is supplied to setting from the first passage member 50 and beaten by the access Type element 15 in printing elements substrate 10.In addition, supporting member 30 and type element substrate 10 are provided with such as underpass: this is logical Road is fed into some or all of liquid of type element 15 recycling (recycling) to the first passage member 50.

Here, the common feed access 211 of each color is connected to the negative pressure control of corresponding color by fluid supply unit 220 Unit 230 (high-pressure side) processed, sharing recovery passage 212, to be connected to vacuum cavitations unit 230 (low by fluid supply unit 220 Press side).By vacuum cavitations unit 230, pressure difference (pressure is generated between common feed access 211 and shared recovery passage 212 Difference).For this purpose, as shown in Figure 8 and Figure 9, in the fluid ejection head of this Application Example with the access being connected to each other, with each color Common feed access 211, be independently supplied access 213, type element substrate 10, independent recovery passage 214 and to share recycling logical The sequence on road 212 generates stream.

(explanation for spraying module)

Figure 10 A is the perspective view for showing an ejection module 200, and Figure 10 B is the exploded view of the ejection module 200.As The method that manufacture sprays module 200, firstly, type element substrate 10 and flexible circuit board 40 to be adhered to and be provided with fluid connection On the supporting member 30 of mouth 31.Then, by making wire bonding by the terminal 16 and flexible circuit board on type element substrate 10 Terminal 41 on 40 is electrically connected to each other, and passes through 110 sealing wire joint portion (electrical connection section) of containment member.

The terminal 42 opposite with type element substrate 10 of flexible circuit board 40 is electrically connected to the connection of electrical wiring substrate 90 Terminal 93 (referring to Fig. 6).Since supporting member 30 is used as the supporter of support type element substrate 10 and makes type element substrate 10 passage members being in fluid communication with each other with passage member 210, it is desirable to supporting members to be engaged to type element substrate When with high flatness and sufficiently high reliability.For example, it is desirable to which aluminium oxide or resin are as material.

(explanation of the structure of type element substrate)

Figure 11 A is the top view for showing the face for being provided with ejiction opening 13 in type element substrate 10, and Figure 11 B is figure The enlarged drawing of the part A of 11A, Figure 11 C are the top views for showing the back side of Figure 11 A.Here, it will illustrate the printing member of this Application Example The construction of part substrate 10.As shown in Figure 11 A, the ejiction opening of type element substrate 10 forms component 12 and is provided with corresponding to different face The four column ejiction openings column of the ink of color.In addition, the extending direction that the ejiction opening of ejiction opening 13 is arranged is referred to as " ejiction opening column direction ".Such as Shown in Figure 11 B, the setting of type element 15 as the ejection energy generating element for spraying liquid by thermal energy is corresponding to respectively At the position of ejiction opening 13.The pressure chamber 23 being arranged in type element 15 is divided by partition wall 22.

Type element 15 passes through the electric wire (not shown) being arranged in type element substrate 10 and is electrically connected to terminal 16.In Be, based on via electrical wiring substrate 90 (referring to Fig. 6) and flexible circuit board 40 (referring to Figure 10 B) from the control of printing device 1000 The pulse signal of circuit input, type element 15 make liquid boiling while being heated.Liquid passes through the hair by boiling generation Power is steeped to spray from ejiction opening 13.As shown in Figure 11 B, liquid supply path 18 is listed in side along each ejiction opening and extends, and liquid returns It receives path 19 and is listed in other side extension along the ejiction opening.Liquid supply path 18 and liquids recovery path 19 are being beaten along setting The access that ejiction opening column direction in printing elements substrate 10 extends, and pass through supply mouth 17a and recovery port 17b and ejiction opening 13 Connection.

As shown in Figure 11 C, the The lid component 20 of sheet is layered in the face for being provided with ejiction opening 13 in type element substrate 10 The back side on, and The lid component 20 is provided with the multiple openings 21 being connected to liquid supply path 18 and liquids recovery path 19. In this application example, The lid component 20 is provided with for three openings 21 of each liquid supply path 18 and for each liquids recovery road Two openings 21 of diameter 19.As shown in Figure 11 B, the opening 21 of The lid component 20 connects with communication port 51 shown in the part (a) of Fig. 7 It is logical.

It is expected that The lid component 20 has to the enough corrosion resistances of liquid.From the viewpoint of preventing colour mixture, it is open and 21 opens The precision that mouth-shaped and aperture position need to have high.For this reason, it may be desirable to by using photoresist material or silicon plate as lid The material of component 20 simultaneously forms opening 21 using photoetching process.In this way, The lid component 20 changes access by opening 21 Pitch.Here, it is contemplated that the pressure loss is expected that by the membrane-like member with thin thickness and forms The lid component 20.

Figure 12 is the cutting when the line XII-XII interception along Figure 11 A for showing type element substrate 10 and The lid component 20 The perspective view in face.Here, it will illustrate flowing of the liquid in type element substrate 10.The lid component 20 is used as in type element substrate The lid of a part of the wall in liquid supply path 18 and liquids recovery path 19 is formed in 10 substrate 11.Type element substrate 10 It is formed by the way that the substrate 11 formed by Si is laminated and forms component 12 by the ejiction opening that photoresist is formed, The lid component 20 connects Close the back side of substrate 11.One face of substrate 11 is provided with type element 15 (referring to Figure 11 B), and the back side of substrate 11 is provided with Form the slot of the liquid supply path 18 and liquids recovery path 19 that extend along ejiction opening column.

The liquid supply path 18 and liquids recovery path 19 formed by substrate 11 and The lid component 20 is connected respectively to each logical Common feed access 211 and shared recovery passage 212 in road component 210, and in liquid supply path 18 and liquids recovery Pressure difference is generated between path 19.When liquid is sprayed from ejiction opening 13 with print image, lead at the ejiction opening for not spraying liquid The liquid inside the liquid supply path 18 in substrate 11 is arranged in across supply mouth 17a, pressure chamber 23 and recycling in over-voltage official post Mouth 17b flows (referring to the arrow C of Figure 12) towards liquids recovery path 19.By the flowing, liquids recovery path can be passed through The retrogradation that 19 recycling are generated and evaporating from ejiction opening 13 in the ejiction opening 13 or pressure chamber 23 for not being related to printing operation Ink, foreign matter and bubble.Furthermore it is possible to inhibit the retrogradation of the ink of ejiction opening 13 or pressure chamber 23.

The liquid for being recovered to liquids recovery path 19 passes through the opening 21 of The lid component 20 and the fluid connection of supporting member 30 31 (referring to Figure 10 B) of mouth are with the communication port 51 (referring to the part (a) of Fig. 7) in passage member 210,214 and of independent recovery passage The sequence for sharing recovery passage 212 is recovered.Then, pass through the recycling path withdrawal liquid of printing device 1000.That is, from printing Equipment body is flowed in the following order to the liquid that fluid ejection head 3 supplies to be supplied to and recycle.

Firstly, fluid connection 111 influent ejecting head 3 of the liquid from fluid supply unit 220.Then, liquid according to It is secondary to pass through connector rubber 100, the communication port 72 being arranged in third path component and shared path slot 71, be arranged in alternate path Shared path slot 62 and communication port 61 in component and the independent path slot 52 and communication port being arranged in the first passage member 51 are supplied to.Then, liquid is sequentially passing through the fluid connection mouth 31 being arranged in supporting member 30, is being arranged in The lid component 20 Opening 21 and the liquid supply path 18 and supply mouth 17a that are arranged in substrate 11 in the case where be fed into pressure chamber 23。

In the liquid for being supplied to pressure chamber 23, does not flow successively through and be arranged in substrate 11 from the liquid that ejiction opening 13 sprays Recovery port 17b and liquids recovery path 19, the opening 21 being arranged in The lid component 20 and the liquid being arranged in supporting member 30 Body communication port 31.Then, liquid flows successively through the communication port 51 being arranged in the first passage member and independent path slot 52, setting In the communication port 61 and shared path slot 62, the shared path slot 71 that is arranged in third path component 70 in alternate path component With communication port 72 and connector rubber 100.Then, liquid from the fluid connection 111 being arranged in fluid supply unit 220 to The flows outside of fluid ejection head 3.

In first circulation mode shown in Fig. 2, the liquid flowed out from fluid connection 111 passes through vacuum cavitations unit 230 supply to connector rubber 100.In addition, the liquid recycled from pressure chamber 23 passes through in second circulation mode shown in Fig. 3 Connector rubber 100, and pass through flows outside of the vacuum cavitations unit 230 from fluid connection 111 to fluid ejection head.From liquid The common feed access 211 of body spray unit 300 one end outflow whole liquid be not passed through be independently supplied access 213a to Pressure chamber 23 supplies.

That is, liquid can be flowed from the other end of common feed access 211 to fluid supply unit 220, and from shared confession It is not flowed into the liquid that one end of access 211 is flowed out and is independently supplied access 213a.In this way, since path is configured to make Liquid flows through the path in the case where being not passed through type element substrate 10, so even if in such as this Application Example include have In the type element substrate 10 of the big access of small flow resistance, it is also able to suppress the adverse current of the recycle stream of liquid.In this way, due to The retrogradation of the liquid near ejiction opening or pressure chamber 23 is able to suppress in the fluid ejection head 3 of this Application Example, so can press down System sliding does not spray.As a result, it is possible to print the image of high quality.

(explanation of the positional relationship between type element substrate)

Figure 13 is the partly enlarged top view for showing two adjacent adjacency sections for spraying the type element substrate in module.? In this Application Example, the type element substrate of substantially parallel quadrangle is used.Configuration has spray in each type element substrate 10 (14a to 14d) is arranged in the predetermined angular with the length direction relative to fluid ejection head 3 to the ejiction opening column of outlet 13 While tilt.Then, the ejiction opening column at the adjacency section between type element substrate 10 are formed so that at least one spray Outlet is overlapped on print media conveying direction.As shown in figure 13, two ejiction openings on line D overlap each other.

Using the configuration, even if when the position of type element substrate 10 is offset slightly from predetermined position, by making ejiction opening The drive control of overlapping can not see the black streaking or missing of print image.Even if when type element substrate 10 is with rectilinear form When (linearity configuration) rather than meander-shaped are arranged, inhibiting the print media of fluid ejection head 3 defeated by construction shown in Figure 13 While sending the length on direction to increase, also copes with the black streaking at the interconnecting piece between type element substrate 10 or lack It loses.In addition, in this application example, the principal plane of type element substrate has a parallelogram shape, but the present invention is not limited to This.For example, even if can also it is expected when using having rectangular shape, trapezoidal shape and other shapes of type element substrate Ground uses construction of the invention.

(explanation of the variation example of the structure of fluid ejection head)

By the variation example of the construction of fluid ejection head shown in explanatory diagram 28 and Figure 30 A to Figure 32.Will omit to it is above-mentioned The explanation of the identical structure and function of example, and only will mainly illustrate to distinguish.In variation example, such as Figure 28, Figure 30 A and figure Shown in 30B, 111 centralized arrangement of fluid connection between fluid ejection head 3 and outside is on the length direction of fluid ejection head One end.Another side of 230 centralized arrangement of vacuum cavitations unit in fluid ejection head 3 (referring to Figure 31).Belong to liquid spray Lift one's head 3 fluid supply unit 220 be configured to corresponding to fluid ejection head 3 length long units, and including respectively Access and filter 221 corresponding to four kinds of liquid to be supplied.As shown in figure 31, it is arranged in liquid spray unit support portion 81 The position of the opening 83 to 86 at place is also located at the position different from fluid ejection head 3.

Figure 32 shows the laminated arrangement of passage member 50,60 and 70.Type element substrate 10 is linearly configured at logical The upper surface of the passage member 50 of top layer in road component 50,60 and 70.As be formed in each type element substrate 10 The access of opening 21 (referring to the Figure 19A and Figure 19B) connection of back side, two are independently supplied access 213 and an independent recycling Access 214 is arranged for the liquid of each color.Therefore, as being formed in the lid for being set to the back side of type element substrate 10 The opening 21 of component 20, two supply openings 21 and a recycling opening 21 are arranged for the liquid of each color.Such as Figure 32 Shown, the common feed access 211 and shared recovery passage 212 extended along the length direction of fluid ejection head 3 alternately configures.

(the second Application Example)

Hereinafter, illustrating that the ink jet printing device 2000 of the second Application Example according to the present invention and liquid spray with reference to the accompanying drawings First 2003 construction.In the following description, it will only illustrate the difference with the first Application Example, and will omit and the first Application Example phase The explanation of same component.

(explanation of ink jet printing device)

Figure 21 is the figure for showing the ink jet printing device 2000 for spraying liquid according to this application example.This Application Example Printing device 2000 and the difference of the first Application Example are, print color image on the print medium by constructing as follows: at this In construction, it is parallel to correspond respectively to four monochrome fluid ejection heads 2003 of ink of cyan C, magenta M, yellow Y and black K Ground arrangement.In the first application example, the columns that can be used in a kind of ejiction opening column of color is a column.However, in this Application Example In, the columns that can be used in a kind of ejiction opening column of color is 20 column.For this purpose, when to multiple ejiction openings column, suitably distribution is beaten Printing accordingly print image when, can be with higher speed print image.

In addition, even if liquid also can be from being located in print media conveying direction when there is the ejiction opening for not spraying liquid On the position corresponding to non-ejiction opening at the ejiction openings of other column addedly spray.Improve reliability, it is thus possible to suitable Locality printing commercial graphic.It is same as the first Application Example, the feed system of printing device 2000, buffer reservoir 1003 (referring to Fig. 2 and Fig. 3) and main liquid storage device 1006 (referring to figs. 2 and 3) be fluidly connected to fluid ejection head 2003.In addition, being sprayed to liquid First 2003 transmitting electric power and the electric control unit for spraying control signal are electrically connected to fluid ejection head 2003.

(explanation of circulating path)

It is same as the first Application Example, it is able to use Fig. 2 or first circulation mode shown in Fig. 3 and second circulation mode conduct Liquid circulation mode between printing device 2000 and fluid ejection head 2003.

(explanation of the structure of fluid ejection head)

Figure 14 A and 14B are the perspective views for showing fluid ejection head 2003 according to this application example.Here, it will illustrate basis The structure of the fluid ejection head 2003 of this Application Example.Fluid ejection head 2003 is ink-jet line (page width formula) print head comprising The 16 type element substrates 2010 linearly arranged on the length direction of fluid ejection head 2003, and one can be passed through Kind liquid print image.Same as the first Application Example, fluid ejection head 2003 includes fluid connection 111, signal input terminal 91 and power supply terminal 92.However, since the fluid ejection head 2003 of this Application Example compared with the first Application Example includes many ejections Mouthful column, so inputting a signal into terminal 91 and power supply terminal 92 is arranged in the two sides of fluid ejection head 2003.This is because needing Reduce the reduction of the voltage as caused by the wiring part being arranged in type element substrate 2010 or signal transferring lag.

Figure 15 is the strabismus decomposition figure for showing fluid ejection head 2003, show constitute fluid ejection head 2003 according to function It can divided component or unit.The function or the liquid communication sequence in fluid ejection head of each unit and component are applicable in first Example is substantially likewise, but ensure that the function of the rigidity of fluid ejection head is different.In the first application example, mainly pass through liquid Body spray unit support portion 81 ensures the rigidity of fluid ejection head, but in the fluid ejection head of second Application Example 2003, By including rigidity that the alternate path component 2060 in liquid spray unit 2300 ensures fluid ejection head.

The liquid spray unit support portion 81 of this Application Example is connected to the both ends of alternate path component 2060, and liquid sprays Unit 2300 is mechanically connected to the balladeur train of printing device 2000 so that fluid ejection head 2003 positions out.90 He of electrical wiring substrate Fluid supply unit 2220 including vacuum cavitations unit 2230 is connected to liquid spray unit support portion 81.Two liquid supplies Each of unit 2220 fluid supply unit 2220 includes built-in filter (not shown).

Two vacuum cavitations units 2230 are configured to different and relatively high and low vacuum cavitations pressure.In addition, As shown in Figure 14 B and Figure 15, when fluid ejection head 2003 is arranged in the vacuum cavitations unit 2230 of high-pressure side and low-pressure side When both ends, the stream of the liquid in the common feed access and shared recovery passage of the length direction extension of fluid ejection head 2003 Toward each other.In this configuration, the heat exchange between common feed access and shared recovery passage is promoted, thus reduces two Temperature difference in a shared path.It therefore reduces the temperature difference of the type element substrate 2010 along shared path setting.Knot Fruit exists and does not allow to be also easy to produce the non-uniform advantage of printing as caused by temperature difference.

Next, by the detailed configuration for the passage member 2210 for illustrating liquid spray unit 2300.As shown in figure 15, access Component 2210 is obtained by the first passage member 2050 of stacking and alternate path component 2060, and passage member 2210 will be from The liquid that fluid supply unit 2220 supplies, which is assigned to, sprays module 2200.Passage member 2210, which is used as, to be made from ejection module 2200 The liquid of recycling returns to the passage member of fluid supply unit 2220.The alternate path component 2060 of passage member 2210 is Following passage member: it is formed with common feed access and shared recovery passage and improves the rigidity of fluid ejection head 2003.For This, it is expected that the material of alternate path component 2060 with enough corrosion resistances and has high mechanical strength relative to liquid. Specifically, SUS, Ti or aluminium oxide are able to use.

The part (a) of Figure 16 is the figure for spraying the face that module 2200 is installed shown in the first passage member 2050, figure 16 part (b) is the figure at the back side for showing the first passage member 2050 and the face of contact alternate path component 2060.With first Application Example is different, and first passage member 2050 of this Application Example has following construction: in this configuration, multiple components are by adjacently It is arranged to correspond respectively to spray module 2200.By using the segmenting structure, multiple modules can be sprayed with corresponding to liquid The mode of first 2003 length configures.Therefore, the structure can particularly well use with for example with B2 or larger size The corresponding relatively long fluid ejection head of sheet material in.

As shown in the part (a) of Figure 16, the communication port 51 and ejection module 2200 of the first passage member 2050 are in fluid communication. As shown in the part (b) of Figure 16, the independent communication port 53 of the first passage member 2050 and the communication port of alternate path component 2060 61 are in fluid communication.The part (c) of Figure 16 shows the contact surface relative to the first passage member 2050 of alternate path component 60, The part (d) of Figure 16 shows the section of the central portion on the thickness direction of alternate path component 60, and the part (e) of Figure 16 is to show The figure of the contact surface relative to fluid supply unit 2220 of alternate path component 2060 out.The connection of alternate path component 2060 Each color of the function and the first Application Example of mouth or access is same.The shared path slot 71 of alternate path component 2060 is by shape As so that the side of shared path slot 71 is common feed access 2211 shown in Figure 17, the other side is to share recovery passage 2212.These accesses respectively along fluid ejection head 2003 length direction be arranged so that liquid from one end of these accesses to Other end supply.The difference of this Application Example and the first Application Example is, common feed access 2211 and shared recovery passage 2212 In liquid flow direction it is opposite each other.

Figure 17 is the perspective view for showing the liquid connection relationship between type element substrate 2010 and passage member 2210.Edge A pair of of common feed access 2211 and shared recovery passage 2212 setting that the length direction of fluid ejection head 2003 extends are logical In road component 2210.The communication port 61 of alternate path component 2060 is connected to the independent communication port 53 of the first passage member 2050, So that the position of the two matches each other, pass through connection so as to form from the common feed access 2211 of alternate path component 2060 The liquid supply passageways that mouth 61 is connected to the communication port 51 of the first passage member 2050.Similarly, it yet forms from alternate path The liquid that the communication port 72 of component 2060 is connected to by sharing recovery passage 2212 with the communication port 51 of the first passage member 2050 Feed path.

Figure 18 is the sectional view along the interception of the line XVIII-XVIII of Figure 17.Common feed access 2211 passes through connection Mouth 61, independent communication port 53 and communication port 51, which are connected to, sprays module 2200.Although being not shown in Figure 18, it should be apparent that , recovery passage 2212, which is shared, by the same paths in the different cross section of Figure 17 is connected to ejection module 2200.With One Application Example is same, sprays module 2200 and type element substrate 2010 is provided with the access being connected to each ejiction opening, thus Some or all of liquid of supply can be made to be recycled in the state of passing through the ejiction opening for not executing spray action.This Outside, same as the first Application Example, by fluid supply unit 2220, common feed access 2211 is connected to vacuum cavitations unit 2230 (high-pressure sides) share recovery passage 2212 and are connected to vacuum cavitations unit 2230 (low-pressure side).Thus, to be made by pressure difference The side that liquid is flowed from the pressure chamber that common feed access 2211 passes through type element substrate 2010 to shared recovery passage 2212 Formula forms stream.

(explanation for spraying module)

Figure 19 A is the perspective view for showing an ejection module 2200, and Figure 19 B is the decomposition for showing the ejection module 2200 Figure.Difference with the first Application Example is that terminal 16 is arranged on the ejiction opening column direction of type element substrate 2010 Two sides (long leg of type element substrate 2010).Therefore, two flexible circuit boards of type element substrate 2010 are electrically connected to 40 are arranged to each type element substrate 2010.Since the columns for the ejiction opening column being arranged in type element substrate 2010 is 20 column, so ejiction opening column are arranged more than eight column ejiction openings of the first Application Example.Here, due to shortening from terminal 16 to printing The maximum distance of element, so reducing, the voltage generated in the wiring part in type element substrate 2010 is reduced or signal prolongs Late.In addition, the fluid connection mouth 31 of supporting member 2030 is arranged along the entire ejiction opening being arranged in type element substrate 2010 Opening.Other constructions are same as the first Application Example.

(explanation of the structure of type element substrate)

The part (a) of Figure 20 is the schematic diagram for showing the face for being disposed with ejiction opening 13 in type element substrate 2010, figure 20 part (c) is the schematic diagram for showing the back side in the face of part (a) of Figure 20.The part (b) of Figure 20 is shown when setting exists Type element substrate in the case that the The lid component 2020 at the back side of the type element substrate 2010 in the part (c) of Figure 20 is removed The schematic diagram in 2010 face.As shown in the part (b) of Figure 20, liquid supply path 18 and liquids recovery path 19 are in type element It is alternately arranged at the back side of substrate 2010 along ejiction opening column direction.

The columns of ejiction opening column is greater than the columns that the ejiction opening of the first Application Example arranges.However, the essence with the first Application Example Difference is that the two sides on the ejiction opening column direction of type element substrate are arranged in terminal 16 as described above.Basic structure with First Application Example is same, wherein each ejiction opening column are respectively provided with a pair of of liquid supply path 18 and liquids recovery path 19, and covers Component 2020 is provided with the opening 21 being connected to the fluid connection mouth 31 of supporting member 2030.

(third Application Example)

It will illustrate the construction of the ink jet printing device 1000 and fluid ejection head 3 of third Application Example according to the present invention.The The fluid ejection head of three Application Examples is the page width formula liquid spray of the print image on the print media of B2 size by single pass Lift one's head.Since third Application Example is identical as the second Application Example in many aspects, so will mainly illustrate in the following description and the The difference of two Application Examples, and the explanation that construction identical with the second Application Example will be omitted.

(explanation of ink jet printing device)

Figure 33 is the schematic diagram for showing ink jet printing device according to this application example.Printing device 1000 has following structure Make: in this configuration, image is not printed directly on the print medium by the liquid sprayed from fluid ejection head 3.

That is, liquid is ejected into intermediate transfer member (intermediate transfer drum 1007) to be formed in intermediate transfer member first Image, and transfer images to print media 2.In printing device 1000, the ink of four kinds of colors (CMYK) is corresponded respectively to Fluid ejection head 3 arranged along intermediate transfer drum 1007 with circular shape.Therefore, colour is executed in intermediate transfer member to beat Print processing, the image that suitably drying prints in intermediate transfer member, and transferred images to for transfer section 1008 The print media 2 conveyed by sheet material conveying roller 1009.The sheet transport system of second Application Example is mainly used for defeated in the horizontal direction Send cutting sheet material.However, the continuous sheet that this Application Example can also be suitable for supplying from home roll (not shown).In the drum delivery system In system, due to being feeding sheets while applying predetermined tension to sheet material, so under flying print movement almost Conveying obstruction does not occur.For this purpose, the reliability of equipment is improved, thus the equipment is suitable for Commercial print purpose.It is applicable in first Example and the second Application Example are same, and feed system, buffer reservoir 1003 and 1006 fluid of main liquid storage device of printing device 1000 connect It is connected to each fluid ejection head 3.It is electrically connected in addition, being transmitted to fluid ejection head 3 and spraying the electric control unit for controlling signal and electric power It is connected to each fluid ejection head 3.

(explanation of the 4th circulation pattern)

Same as the second Application Example, first circulation path shown in Fig. 2 or second circulation path shown in Fig. 3 can also be used Make the liquid circulation path between fluid ejection head 3 and the liquid storage device of printing device 1000, but circulating path shown in Figure 34 It is desired.It is that by-passing valve 1010 is additionally arranged to and first circulation with the main distinction in the second circulation path of Fig. 3 Each access of pump 1001 and 1002 and second circulation pump 1004 is connected to.By-passing valve 1010 has when pressure is more than predetermined pressure The function (the first function) of the upstream pressure of by-passing valve 1010 is reduced by opening valve.In addition, by-passing valve has by coming from The signal of the control base board of printing device main body opens and closes the function (the second function) of valve at any time.

By the first function, be able to suppress big or small pressure be applied to first circulation pump 1001 and 1002 downstream side or The upstream side of second circulation pump 1004.For example, existing big when the function that first circulation pumps 1001 and 1002 is not normally functioning Flow or pressure the case where being likely to be applied to fluid ejection head 3.Therefore, worry that liquid may be from the ejection of fluid ejection head 3 Each bonding part in mouth leakage or fluid ejection head 3 may be broken.However, when by-passing valve is added as in this Application Example When pumping 1001 and 1002 to first circulation, if there is big pressure turns on by-passing valve 1010.Therefore, because liquid path is to each The upstream side of circulating pump is open, so being able to suppress the above problem.

In addition, pumping 1004 in first circulation pump 1001 and 1002 and second circulation when recycling drive actions stopping After movement stops, the control signal by the second function based on printing device main body opens rapidly all by-passing valves 1010.Cause This, can discharge in a short time at the downstream portion of fluid ejection head 3 (between vacuum cavitations portion 230 and second circulation pump 1004) High negative pressure (such as a few kPa to tens kPa).When using the positive displacement pump of diaphragm pump etc. as circulating pump, check-valves is logical Often it is built in pump.However, when by-passing valve is opened, additionally it is possible to from the buffer reservoir 1003 in downstream release fluid ejection head 3 Pressure at downstream portion.Although pressure that can only from the downstream portion of upstream side release fluid ejection head 3, the pressure loss The access being present in the upstream passages and fluid ejection head of fluid ejection head.For this purpose, since one can be spent when pressure is released A little times, so the internal pressure of the shared path in fluid ejection head 3 can excessively reduce moment.Therefore, worry ejiction opening Meniscus may rupture.However, due to when the by-passing valve 1010 in the downstream side of fluid ejection head 3 opening, fluid ejection head Downstream pressure is further discharged, so reducing the risk of the meniscus rupture of ejiction opening.

(explanation of the structure of fluid ejection head)

It will illustrate the structure of the fluid ejection head 3 of third Application Example according to the present invention.Figure 35 A is to show to be applicable according to this The perspective view of the fluid ejection head 3 of example, Figure 35 B is the exploded perspective view of fluid ejection head 3.Fluid ejection head 3 is ink-jet page width Formula print head comprising 36 printings arranged along the length direction of fluid ejection head 3 with rectilinear form (linearity configuration) Device substrate 10 simultaneously passes through a kind of color print image.Same as the second Application Example, fluid ejection head 3 includes backplate 132, backplate 132 also protect the rectangle sides of head other than protection signal input terminal 91 and power supply terminal 92.

Figure 35 B is the strabismus decomposition figure for showing fluid ejection head 3, show constitute fluid ejection head 3 according to function quilt The component or unit (backplate 132 is not shown) of segmentation.Liquid circulation sequence in the function or fluid ejection head 3 of unit and component It is identical as the second Application Example.It is with the main distinction of the second Application Example, separated electrical wiring substrate 90 and vacuum cavitations unit 230 are arranged in different location, and the first passage member has different shape.Such as in this application example, for example, being corresponded to having In the case where the fluid ejection head 3 of the length of the print media of B2 size, the power that fluid ejection head 3 consumes is big, thus sets Set eight electrical wiring substrates 90.It is attached to the two sides of the elongated electrical wiring substrate support 82 of liquid spray unit support portion 81 Each of side be attached four electrical wiring substrates 90.

Figure 36 A is to show the liquid including liquid spray unit 300, fluid supply unit 220 and vacuum cavitations unit 230 The side view of ejecting head 3, Figure 36 B are the schematic diagrames for showing the stream of liquid, and Figure 36 C is the line XXXVIC- shown along Figure 36 A The perspective view in the section of XXXVIC interception.For easy understanding attached drawing simplifies a part of construction.

Fluid connection 111 and filter 221 are arranged in fluid supply unit 220,230 1 bodily form of vacuum cavitations unit At in the downside of fluid supply unit 220.Therefore, compared with the second Application Example, vacuum cavitations unit 230 and type element substrate The distance in short transverse between 10 shortens.Using the construction, reduce the passage connecting portion in fluid supply unit 220 Quantity.As a result, there are following advantages: improving the reliability for preventing printing fluid from leaking, and reduce component or step Quantity.Reduce further, since head difference between vacuum cavitations unit 230 and ejiction opening forming face is opposite, so the construction energy Enough suitable for following printing device: the printing device, for fluid ejection head 3 shown in Figure 33, each fluid ejection head Tilt angle is different.Since head difference can be reduced, so even if when using the fluid ejection head 3 with different inclination angle When, it can also reduce the Negative Pressure Difference for being applied to the ejiction opening of type element substrate.Further, since from vacuum cavitations unit 230 to The distance of type element substrate 10 reduces, so reducing the flowing between vacuum cavitations unit 230 and type element substrate 10 Resistance.It therefore reduces the pressure loss as caused by the variation of fluid flow is poor, it is thus possible to more desirably control negative pressure.

Figure 36 B is the schematic diagram for showing the stream of the printing fluid in fluid ejection head 3.Although the circulating path in terms of circuit It is different from circulating path shown in Figure 34, but Figure 36 B shows the liquid in the component of actual fluid ejection head 3 Stream.A pair of of the common feed access 211 and shared recovery passage 212 extended along the length direction of fluid ejection head 3 is arranged in length In shape alternate path component 60.Common feed access 211 and shared recovery passage 212 are formed so that liquid in common feed It is flowed in opposite direction in access 211 and shared recovery passage 212, and the upstream side of each access is arranged in filter 221, with Just the foreign matter from intrusions such as interconnecting pieces 111 is captured.In this way, since liquid flows through common feed access in opposite direction 211 and shared recovery passage 212, so can desirably slow down the temperature gradient on the length direction in fluid ejection head 3.For The explanation of simplification figure 34, with identical direction indicates the stream in common feed access 211 and shared recovery passage 212.Negative pressure Control unit 230 is connected to the downstream side of each of common feed access 211 and shared recovery passage 212.In addition, sharing Supply passageway 211 is connected in the way for being independently supplied access 213a and is provided with branch portion, shares recovery passage 212 and is connected to independence Branch portion is provided in the way of recovery passage 213b.Being independently supplied access 213a and independent recovery passage 213b, to be formed in first logical In road component 50, and be respectively independently supplied access with type element substrate 10 is set the back side at The lid component 20 opening 21 (0 parts (c) referring to fig. 2) connection.

It is the unit of high-pressure side (H) and low-pressure side (L) by the vacuum cavitations unit 230 that " H " and " L " of Figure 36 B is indicated. Vacuum cavitations unit 230 is the back pressure controlled the upstream pressure of vacuum cavitations unit 230 as high negative pressure (H) and lower negative pressure (L) Formula pressure adjustmenting mechanism.Common feed access 211 is connected to vacuum cavitations unit 230 (high-pressure side), shares recovery passage 212 and connects It is connected to vacuum cavitations unit 230 (low-pressure side), so that generating pressure between common feed access 211 and shared recovery passage 212 Difference.By the pressure difference, liquid is flowed from common feed access 211 to shared recovery passage 212, is during which passed sequentially through and is independently supplied Ejiction opening 13 (pressure chamber 23) and independent recovery passage 213b in access 213a, type element substrate 10.

Figure 36 C is the perspective view for showing the section of the line XXXVIC-XXXVIC interception along Figure 36 A.In this application example, Each module 200 that sprays includes the first passage member 50, type element substrate 10 and flexible circuit board 40.In present embodiment In, there is no the supporting member 30 (Figure 18) illustrated in the second Application Example, and the type element substrate 10 including The lid component 20 It is directly connectcted to the first passage member 50.Liquid is from being formed in the upper of the common feed access 211 for being set to alternate path component The communication port 61 on surface is passed through the independent communication port 53 of the lower surface of the first passage member 50 to being independently supplied access 213a supply.Then, liquid passes through pressure chamber 23, and passes through independent recovery passage 213b, independent communication port 53 and communication port 61 to be recycled to shared recovery passage 212.

Here, different from the second Application Example as shown in figure 15, the lower surface of the first passage member 50 is formed in (close to the The surface of two passage members 60) communication port 61 of the independent communication port 53 relative to the upper surface for being formed in alternate path component 50 For it is sufficiently large.Using the construction, even if due to inclined when position occurs when spraying module 200 and being installed to alternate path component 60 From the first passage member and alternate path component also can reliably be in fluid communication with each other, so improving in a manufacturing process Yield rate, it is thus possible to the reduction of cost of implementation.

In addition, the explanation of above-mentioned Application Example does not limit the scope of the invention.As an example, in this application example, having said It is illustrated and bubble is generated to spray the heat type fluid ejection head of liquid by heating element.However, the present invention can also be suitable for adopting The fluid ejection head of type is sprayed with piezo-electric type and various other liquid.

In this application example, have been described that the liquid of wherein ink etc. recycles between liquid storage device and fluid ejection head Ink jet printing device (printing device), it is also possible to use other Application Examples.In other Application Examples, for example, can adopt With following construction: ink does not recycle, and two liquid storage devices are arranged in the upstream side of fluid ejection head and downstream side and make Mo Congyi A liquid storage device is flowed to another liquid storage device.In this way, the indoor ink of pressure can flow.

In this application example, showing using the so-called line head with the width corresponding to print media is had been described that Example, but the present invention can also be suitable for while scanning and printing medium the so-called serial of print image on the print medium Formula fluid ejection head (serial type liquid ejection head).As string type fluid ejection head, for example, liquid Ejecting head equipped with the type element substrate for spraying black ink and can spray the type element substrate of color ink, but of the invention It is without being limited thereto.I.e., it is possible to be arranged shorter than the width of print media and including so that ejiction opening weighs each other on ejiction opening column direction The fluid ejection head for multiple type element substrates that folded mode is arranged, and can be situated between by the fluid ejection head scanning and printing Matter.

(first embodiment)

Hereinafter, illustrating first embodiment of the invention with reference to the accompanying drawings.Further, since the essential structure of present embodiment It is identical as the first Application Example, so will only illustrate characteristic point below.

Figure 22 A is the perspective view for showing the liquid ejection module 200 of the printing device 1000 of present embodiment.Liquid sprays The construction that there is module 200 type element substrate 10 and flexible circuit board 40 to be arranged in supporting member 30.Figure 22 B is to show liquid Spray the exploded perspective view of module 200.The terminal 16 of type element substrate 10 and the terminal 41 of flexible circuit board 40 pass through metal Wiring (not shown) is electrically connected to each other, and interconnecting piece is covered by containment member 110 to be protected.Supporting member 30 be provided with make from Liquid sprays the fluid connection mouth 31 that the ink that module 200 sprays is supplied to type element substrate 10.It is expected that supporting member 30 has High flatness and sufficiently high reliability, simultaneously engages with type element substrate 10.For example, it is desirable to aluminium oxide or resin conduct Material.

Figure 23 A to 23C is the figure for showing the structure of type element substrate 10.Figure 23 A shows type element substrate 10 Overall profile, Figure 23 B are to show the enlarged drawing of the part XXIIIB of Figure 23 A and show liquid to form component 12 across ejiction opening State easily to illustrate the figure, Figure 23 C is the sectional view intercepted along the line XXIIIC-XXIIIC of Figure 23 A.Printing member The ejiction opening formation component 12 of part substrate 10 is provided with multiple ejiction openings column corresponding to different black colors.It is incited somebody to action as by thermal energy The type element 15 that liquid becomes the heating element of bubble, which is arranged in the substrate 11 of type element substrate 10, corresponds to each spray At the position of outlet 13.

In addition, the extending direction for the ejiction opening column for being arranged with ejiction opening 13 is referred to as " ejiction opening column direction ".In substrate 11 In, the pressure chamber 23 for being built-in with type element 15 is limited by partition wall 22.Type element 15 is by being arranged in type element substrate Electric wire (not shown) in 10 is electrically connected to the terminal 16 of Figure 23 A, and is based on passing through flexible circuit board 40 from printing device The pulse signal heating type element 15 of 1000 control circuit input is so that liquid boiling.Liquid passes through the hair by boiling generation Power is steeped to spray from ejiction opening 13.

In addition, the The lid component 20 (3C referring to fig. 2) of sheet be laminated in type element substrate 10 be provided with outlet 13 The back side in face, The lid component 20 are provided with the opening 21 (supply opening 21) being connected to liquid supply path described later on 18.? In present embodiment, there are three openings 21 to correspond to a liquid supply path 18 for setting in The lid component 20.In addition, The lid component 20 opening 21 is connected to the fluid connection mouth 31 of Figure 22 B respectively.In addition, The lid component 20 is formed in the base of type element substrate 10 A part of the wall of liquid supply path 18 formed in plate 11, specifically, The lid component 20 are used as liquid supply path 18 Lid.

In addition, it is expected that The lid component 20 has enough corrosion resistances relative to liquid.In addition, from preventing the viewpoint of colour mixture from going out Hair needs to be formed the opening shape and aperture position of opening 21 with high precision.For this reason, it may be desirable to by using photoresist material Material or silicon plate as The lid component 20 material and form using photoetching process opening 21.In addition, The lid component 20 is changed by opening 21 The pitch on flexible road.Here, it is contemplated that the pressure loss is expected that by the film member with thin thickness and forms The lid component.Consider To described above, it is expected that The lid component 20 is formed as photonasty thin resin film component.

In the present embodiment, pressure is indoor black to outer loop.By using the construction, when fluid ejection head 3 is beaten When watermark image, the stream of ink can be generated in the pressure chamber or ejiction opening for being not used in printing operation.Therefore, ink is able to suppress at this Retrogradation at part.In addition, the ink of retrogradation or the foreign matter in ink can be discharged to the outside that liquid sprays module 200.For this purpose, this The fluid ejection head 3 of embodiment can be with higher speed print high quality images.

Firstly, the construction that will illustrate that ink recycles in the ejiction opening of present embodiment.As shown in fig. 23 a, along ejiction opening 14a to 14j is arranged, liquid supply path 18 extends in side, and liquids recovery path 19 extends in the other side.That is, each ejiction opening column Between liquid supply path 18 and liquids recovery path 19.Liquid supply path 18 and liquids recovery path 19 lead to respectively It crosses supply mouth 17a and recovery port 17b is connected to pressure chamber.Liquid supply path 18, liquids recovery path 19, supply mouth 17a and Recovery port 17b is formed on the substrate 11 formed by Si.

In the present embodiment, The lid component 20 is provided with three openings 21 for being arranged for each liquid supply path 18 (supply opening) and two openings 21 (recycling opening) for being arranged for each liquids recovery path 19.The opening 21 of The lid component 20 It is connected to the fluid connection mouth 31 (2B referring to fig. 2) of supporting member 30.In the present specification, the invention is not limited thereto.At least one A opening 21 can be arranged for each of liquid supply path 18 and liquids recovery path 19.

Next, the stream that will illustrate the liquid in type element substrate 10.Type element substrate 10 is by making to be formed by Si Substrate 11 and by the ejiction opening that photoresist is formed formed component 12 stacking and obtain, The lid component 20 is joined to substrate 11 The back side.In the present embodiment, The lid component 20 and substrate 11 are engaged with each other in the case where not using bonding agent.The one of substrate 11 A face is provided with type element 15, and the back side in the face is provided with 18 He of liquid supply path to be formed and be extended along ejiction opening column 14 The slot in liquids recovery path 19.The back side is provided with The lid component 20, and covers and be attached to slot to form each liquid path.By substrate 11 and The lid component 20 formed liquid supply path 18 and liquids recovery path 19 be connected respectively to passage member 50 (referring to Fig. 6) Interior common feed access and shared recovery passage (not shown), produces between liquid supply path 18 and liquids recovery path 19 Raw pressure difference.

When liquid is sprayed from the ejiction opening 13 of fluid ejection head 3 with print image, in the ejection for not executing spray action Make the liquid in liquid supply path 18 pass through supply mouth 17a, pressure chamber 23 and recovery port 17b by pressure difference at mouthful to return to liquid It receives path 19 and flows (stream on the direction as shown in the arrow C of Figure 23 C).By the flowing, can will be moved not being related to printing Ink, foreign matter and the bubble of the retrogradation generated and evaporating from ejiction opening 13 in the ejiction opening 13 of work or pressure chamber 23 are recovered to liquid Body recycles path 19.Furthermore it is possible to inhibit the retrogradation of the ink of ejiction opening 13 or pressure chamber 23.

The opening 21 (recycling opening) and supporting member 30 of The lid component 20 are passed through by the liquid that liquids recovery path 19 is recycled Fluid connection mouth 31 be recovered to liquid spray module 200 outside, and finally by printing device feed path recycle. It is flowed in the following order that is, spraying the liquid that module 200 supplies to liquid from printing device main body to be supplied to and recycle.It is first First, liquid is flowing successively through the fluid connection mouth 31 being arranged in the supporting member 30, (confession of the opening being arranged in The lid component 20 21 To opening) and liquid supply path 18 and supply mouth 17a in substrate 11 be set while supplied to pressure chamber 23.It is supplying It is given in the liquid of pressure chamber 23, is not flowing successively through recovery port 17b and liquids recovery path from the liquid that ejiction opening 13 sprays 19, the opening 21 (supply opening) being arranged in The lid component 20 and the fluid connection mouth 31 being arranged in supporting member 30 it is same When to liquid spray module 200 flows outside.

In this way, it is sprayed in module 200 in the liquid of present embodiment, is able to suppress pressure chamber 23 or ejiction opening 13 The retrogradation of neighbouring liquid.Therefore, it is able to suppress sliding or does not spray.As a result, it is possible to print the image of high quality.

Here, illustrate characteristic of the invention with comparative example with reference to the accompanying drawings.Figure 24 A is the type element base for showing comparative example The ejiction opening of plate arranges the figure with the opening of The lid component relative to the relationship of corresponding gradation of drop-out colour.In a comparative example, The lid component Opening 21 is placed along the same position in the ejiction opening column of ejiction opening column direction.In this configuration, due to ejiction opening column 14a Ejiction opening on the same straight line of print media conveying direction (direction indicated by arrow β) into all column of 14j Negative pressure is roughly the same, so gradation of drop-out colour is relatively high at the ejiction opening (near opening) with lower negative pressure, gradation of drop-out colour is having Have relatively low at the ejiction opening of high negative pressure.That is, as shown in the curve of Figure 24 A, due to being provided with high printing in each ejiction opening column Concentration position and low gradation of drop-out colour position so the shape of printing can be emphasized on the print medium, thus easily identify out and print Unevenly.

Here, in the present invention, the opening 21 of The lid component 20 is by arranging as follows.Figure 24 B is to show present embodiment Type element substrate 10 ejiction opening column and The lid component 20 opening 21 relative to corresponding gradation of drop-out colour relationship figure.This The liquid discharge module 200 of embodiment has following construction: in this configuration, the center (center of gravity) of the opening 21 of The lid component 20 In the substantially orthogonal direction of the orientation with the ejiction opening in ejiction opening column 14, (print media conveying direction is (by arrow β for position The direction of expression)) on do not configure on the same line.Specifically, be open 21 center configuration relative to ejiction opening The substantially orthogonal direction of the orientation of ejiction opening in column is formed on the same straight line of predetermined angular.In this way, due to Gradation of drop-out colour distribution be set to it is different according to the position of ejiction opening column 14a to 14j, so alleviating the shape of gradation of drop-out colour Shape, thus do not allow the shape easy to identify.Thus, it is possible to improve the print quality when print image on the print medium.

In addition, in the present specification, when the center of at least one of ejiction opening column opening 21 is defeated in print media Send do not arranged on direction on the same line without lead to all openings 21 on above-mentioned straight line the deviation at center when, can obtain Obtain the effect.

Here, in the present embodiment, the ink of the arrival pressure chamber 23 generated after the ejection of ink refills stream short The stream that time internal ratio circulates through pressure chamber is strong.Although for this purpose, opening 21 in there are supply opening 21 and recycling opening 21, Even if also can instantaneously generate the arrival pressure generated after the ejection of ink in supply side and recycling side in the case where circulation The ink of room 23 refills stream.At this point, negative pressure is low at the ejiction opening being located near opening 21, and with far from opening 21, spray The negative pressure in exit becomes higher and higher.

Thus, as the gradation of drop-out colour shown in Figure 24 B distribution in, no matter supply opening 21 and recycling opening 21 in it is any One, gradation of drop-out colour are high near opening 21, and as far from opening 21, gradation of drop-out colour becomes lower and lower.Cause And due to the center of the center of (supply side) of ejiction opening column 14 opening 21 and the recycling opening 21 of same ejiction opening column 14 Position does not configure on the same line on print media conveying direction, so can make the high gradation of drop-out colour portion on print media Dispersion.In order to which the effect is further presented, it is expected that between different ejiction opening column 14 not by supply opening 21 or The center of recycling opening 21 configures on the same line on print media conveying direction.At this point, such as Figure 24 A and Figure 24 B Shown, the center of the opening 21 of supply side and recycling side can not configure on print media conveying direction in same straight line On.

In addition, since supporting member 30 has the function of The lid component 20, so the present invention can also be suitable for no The lid component 20 structure.

In this way, the opening of ejiction opening column is arranged such that center (center of gravity) position of at least one opening is opposite It is not configured on the same straight line of the moving direction extension of the print media along relative movement in the center of other openings.Cause This, can be realized can inhibit to print the fluid ejection head that non-uniform liquid sprays module and sprays module including the liquid.

(second embodiment)

Hereinafter, illustrating second embodiment of the present invention with reference to the accompanying drawings.Further, since the essential structure of present embodiment It is identical as the essential structure of the first Application Example, so will only illustrate characteristic point below.

Figure 25 A is the figure for showing the type element substrate 400 of present embodiment, and Figure 25 B is to show liquid to spray module 500 Exploded perspective view, Figure 25 C be show configured with liquid spray module 500 fluid ejection head 600 figure.

In the construction of first embodiment, ejiction opening column between from opening 21 to ejiction opening 13 longest distance be not With.For example, as understood from Figure 23 A, from the right end of the figure of ejiction opening column 14a from opening 21 and ejiction opening 13 between Opening 21 at the right end of the figure of distance and ejiction opening column 14e is compared between the distance between ejiction opening 13 it is found that spraying Mouth column 14a is long.In this configuration, since negative pressure is high at the ejiction opening 13 far from opening 21, so when with high speed It can be delayed when print image and supply ink, thus may cause and do not spray.Therefore, worry that print quality may deteriorate.

Here, in the present embodiment, the quantity corresponding to the opening 21 of ejiction opening column 14 is constant, from each ejiction opening column 14 Opening 21 to ejiction opening 13 longest distance be set to it is roughly the same.In the present embodiment, as shown in fig. 25 a, for phase Being centrally disposed on for the opening 21 of each ejiction opening column 14, which is flowed into, with liquid forms predetermined angle relative to print media conveying direction On the same straight line of (α > 0), the shape of type element substrate be formed with formed relative to print media conveying direction it is pre- Determine the substantially parallel quadrangle form on the side of angle [alpha].As shown in fig. 25 a, the parallelogram shape of present embodiment is by beating The angle that the adjacent side of the shape of printing elements substrate 400 is formed is not 90 ° of shape.The ejiction opening column side of type element substrate 400 The shape (side) at upward both ends is roughly parallel to ejiction opening column, and the shape on remaining both sides is on the direction intersected with ejiction opening column It is roughly parallel to the line for connecting the center of the opening 21 flowed into for same liquid.In addition, having relative to print media conveying direction There is the same straight line of predetermined angular to be roughly parallel to and does not arrange parallel side with the ejiction opening of type element substrate 400.

Using the structure, ejiction opening column 14 can be formed so that the longest distance substantially phase from opening 21 to ejiction opening Together.In this way, due in ejiction opening column 14 longest distance it is roughly the same, so ink will not flow through confession with extremely long distance To access 18, the pressure loss is also reduced, it is thus possible to improve print quality.In addition, when same supply passageway 18 includes multiple Be open 21 when, at least can be the opening 21 than same supply passageway 18 to the distance of opening 21 from the end of ejiction opening column 14 Interval on ejiction opening column direction is short.When being arranged in such a way opening, Mo Buhui flows through supply passageway with extremely long distance 18, it is thus possible to further improve print quality.

In addition, in the third embodiment, as noted previously, as also being supplied from recovery passage 19 during spray action Ink, it is desirable to the opening 21 of recovery passage 19 is arranged the opening 21 as supply passageway 18.

In addition, as shown in fig. 25 c, liquid sprays when type element substrate is formed substantially parallel quadrangle form Module 200 can linearly be arranged along the length direction of fluid ejection head 600.The linearly aligned row of module 200 is sprayed in liquid It, can be with higher speed print image in the case where formula fluid ejection head (page width formula fluid ejection head).At this point, working as different sprays When the ejiction opening of outlet column is partially overlapped by each other at the interconnecting piece that liquid sprays module 200, it can desirably improve printing matter Amount.Since the ejiction opening of different ejiction openings column partially overlaps each other as shown in fig. 25 c, so the spray of each type element substrate 10 Outlet column 14 are tilted by a predetermined angle both with respect to the length direction of fluid ejection head 600.In the line head structure, due to being permitted Logical print movement (one-pass printing operation) is executed once in more situations, so project of the invention becomes tight It is high, it is thus possible to be readily available effect of the invention.

In addition, have been described that the construction that a variety of ink are supplied to a type element substrate 10, but even if when to one Type element substrate 10 can also obtain identical effect when supplying a kind of ink.For example, with high speed print image and specially In fluid ejection head for Commercial print purpose, a fluid ejection head is arranged for a kind of ink.However, working as the liquid When the liquid of ejecting head sprays module with construction of the invention, print quality can be improved.

(third embodiment)

Hereinafter, illustrating third embodiment of the present invention with reference to the accompanying drawings.In addition, due to the essential structure of present embodiment It is identical as the first Application Example, so will only illustrate characteristic point below.

Figure 26 A to 26C is the figure for showing the structure of type element substrate 10.Figure 26 A shows type element substrate 10 Overall profile, Figure 26 B are the enlarged drawings of the part XXVIb of Figure 26 A, and Figure 26 C is intercepted along the line XXVIc-XXVIc of Figure 26 A Sectional view.

In the present embodiment, different from the construction of above embodiment to the construction of the access of ejiction opening supply ink.? In above embodiment, has been described that the access of ejiction opening supply ink and recycle what black access was partitioned from from ejiction opening Construction.However, in the present embodiment, ink is supplied to ejiction opening without the circulation of ink from liquid supply path 418.Liquid supplies It to path 418 is arranged in type element substrate 410, along the extension of ejiction opening column direction and by supply mouth 417a and ejiction opening The access of 13 connections.In the present invention, it as described above, whether no matter circulation, i.e., whether no matter there is recycling opening 21, is filling out again It fills under state, gradation of drop-out colour increases near opening 21, and gradation of drop-out colour reduces with far from opening 21.Thus, The present invention can also be suitable for not executing the fluid ejection head of the embodiment of circulation.

Hereinafter, will illustrate that liquid sprays the stream of the liquid in module 200.The ink supplied from black supply source (not shown) is in liquid Body, which sprays, first passes through the fluid connection mouth 31 (2B referring to fig. 2) being formed in supporting member 30 in module 200, and passes through and beat The 21 influent feed path 418 of supply opening of the The lid component 420 of printing elements substrate 410.At this point, in conventional inkjet printing In equipment, using the ink including black, four kinds of cyan, magenta and yellow colors, and ink is supplied according to each color separated. In addition, the printing device 1000 of present embodiment includes the four column ejiction openings column for black and the two column sprays for other colors Outlet column.

The ink of influent feed path 418 flows through liquid supply path 418, passes through supply mouth 417a inflow common feed Liquid chamber 24 is simultaneously divided into pressure chamber 23.Be supplied to each pressure chamber 23 ink by the thermal energy generated by type element 15 boil with It sprays, and is landed on print media (not shown) from ejiction opening 13, thus print image on the print medium.Work as supply mouth When 417a is arranged in the two sides of ejiction opening column 14 as in present embodiment, it is rapidly supplied ink after the ejection of ink, because And it can be with higher speed print image.In addition, even if the present invention can also fit when supply mouth 417a is provided only on side For the construction.

Here, it will illustrate feature of the invention.In the present embodiment, the opening of The lid component is according to following construction arrangement. Figure 27 A is the pass shown between the ejiction opening column of the type element substrate 410 of present embodiment and the aperture position of The lid component 420 The figure of system.In the present embodiment, opening 21 is arranged such that the center of the opening 21 of The lid component 420 is corresponding to printing Jie It is not present on same straight line on the conveying direction of matter conveying direction (direction indicated by arrow β).Using the construction, due to Ejiction opening position on ejiction opening column direction with high negative pressure and on ejiction opening column direction with the ejiction opening position of lower negative pressure It is different in each ejiction opening column, so the high gradation of drop-out colour position and low gradation of drop-out colour position on ejiction opening column direction are each It is different in ejiction opening column.Therefore, because the high gradation of drop-out colour position and low gradation of drop-out colour position on print media are in each spray It is dispersion in outlet column, so alleviating deep or light on print media, thus does not allow that easy to identify this is deep or light.As a result, it is possible to change Kind print quality.

In addition, in the present embodiment, the center of the opening 21 of all The lid components 420 is in print media conveying direction On do not configure on the same line, but the invention is not restricted to this.That is, when at least one opening 21 is relative to other ejiction openings The opening 21 of column can obtain effect of the invention when being not arranged on same straight line on print media conveying direction.

In addition, further effect can be obtained when the present invention to be suitable for the ejiction opening column 14 of same color.In It is that, when the present invention is suitable for many ejiction opening column 14, bigger effect can be obtained.For this purpose, the opening of ejiction opening column 14 21 do not expect configuration on the same line as much as possible on print media conveying direction.It is same as present embodiment, most it is expected The center of the opening 21 of all ejiction opening column 14 configures at different positions on ejiction opening column direction.

In addition, in the above-described embodiment, having used sentence as the center of opening 21, but the sentence can have been determined Justice is the center of the shape of opening 21.That is, Figure 27 B is instantiated has opening of various shapes when from The lid component 420.Such as Shown in figure, be open 21 center indicate parallelogram opening in the case where cornerwise intersection point, in the feelings of circular open The center of circle under condition and two symmetrical axis of symmetry of line in the case where oval opening (long rongd opening) Crosspoint.

Although illustrating the present invention referring to illustrative embodiments, but it is to be understood that it is public that the present invention is not limited to institutes The illustrative embodiments opened.The range of claims should meet broadest explanation, with comprising all these modifications, etc. Same structure and function.

Claims (20)

1. a kind of liquid sprays module, it is used in the page width formula liquid that liquid is sprayed from ejiction opening to the print media relatively moved In body ejecting head, the liquid sprays module and includes:

Type element substrate comprising the first ejiction opening column and the second ejiction opening column and the first liquid supply path and the second liquid Body feed path intersects in first ejiction opening column and second ejiction opening column along the direction with the relative movement Direction be arranged with spray liquid ejiction opening, the first liquid supply path and second liquid feed path are respectively to described first Ejiction opening column and second ejiction opening column supply liquid and extend respectively along the direction of the intersection；With

The first opening and the second opening are connected to first liquid supply path and the second liquid feed path respectively To supply liquid to first liquid supply path and the second liquid feed path respectively,

It is characterized in that, the deviation of gravity center of the center of gravity of first opening and second opening is along the direction of the relative movement The straight line of extension.

2. liquid according to claim 1 sprays module, wherein the liquid sprays module further include:

Supporting member supports the type element substrate and including the correspondence into first opening and second opening The communication port of opening supply liquid；With

Wiring substrate, to the ejection energy generating element supply of electrical energy for being set to the type element substrate.

3. liquid according to claim 1 sprays module, wherein be provided with multiple institutes in first liquid supply path The first opening is stated, multiple second openings are provided in the second liquid feed path.

4. liquid according to claim 1 sprays module, wherein the liquid sprays module further include:

Third ejiction opening column are arranged with spray along the direction that the direction with the relative movement intersects in third ejiction opening column The ejiction opening of liquid out；

Third liquid supply path arranges supply liquid to the third ejiction opening and extends along the direction of the intersection；With

Third opening supplies liquid to the third liquid supply path,

The center of gravity of the center of gravity of first opening, the center of gravity of second opening and third opening is located relative to along described On the straight line for the straight incline that the direction of relative movement extends.

5. liquid according to claim 1 sprays module, wherein the type element substrate includes spraying energy production member Part, pressure chamber and liquids recovery path, the ejection energy generating element generate the energy for spraying liquid, the pressure chamber In be provided with the ejection energy generating element, the liquids recovery path is from pressure chamber's withdrawal liquid and along the intersection Direction extend.

6. liquid according to claim 5 sprays module, wherein it further includes returning from the liquid that the liquid, which sprays module, Receive the recycling opening of path withdrawal liquid.

7. liquid according to claim 1 sprays module, wherein first liquid supply path and the second liquid Feed path is set to the face opposite with the face for being provided with the ejiction opening of the type element substrate, and

First opening and second opening are set to film structural component, and the film structural component is set to the type element substrate The opposite face.

8. liquid according to claim 1 sprays module, wherein the first liquid supply path of Xiang Suoshu and second liquid Body feed path supplies same liquid.

9. liquid according to claim 1 sprays module, wherein by multiple ejections from the first opening supply liquid The length of longest liquid path in mouthful is equal to the longest liquid in the multiple ejiction openings for being open supply liquid from described second The length in path.

10. liquid according to claim 1 sprays module, wherein the shape of the type element substrate is formed greatly Cause parallelogram shape.

11. liquid according to claim 1 sprays module, wherein the type element substrate includes multiple supply mouths, institute State multiple supply mouths by liquid from first liquid supply path be supplied to ejiction opening that first ejiction opening arranges and from The second liquid feed path is supplied to the ejiction opening of the second ejiction opening column, and the multiple supply mouth is beaten along described The thickness direction of printing elements substrate extends.

12. liquid according to claim 1 sprays module, wherein the type element substrate includes spraying energy production Element and pressure chamber, the ejection energy generating element generate the energy for spraying liquid, the inside setting of the pressure chamber There is the ejection energy generating element, and

Outer loop of the indoor liquid of pressure to the pressure chamber.

13. a kind of fluid ejection head is formed page width formula and sprays liquid from ejiction opening to the print media relatively moved Body, the fluid ejection head include:

Type element substrate comprising the first ejiction opening column and the second ejiction opening column and the first liquid supply path and the second liquid Body feed path intersects in first ejiction opening column and second ejiction opening column along the direction with the relative movement Direction be arranged with the ejiction opening for spraying liquid, first liquid supply path and the second liquid feed path respectively to The first ejiction opening column and second ejiction opening column supply liquid and extend respectively along the direction of the intersection；

The lid component comprising the first opening and the second opening and formation first liquid supply path and second liquid confession To a part in path, it is described first opening and it is described second be open respectively with first liquid supply path and described second Liquid supply path is connected to supply liquid to first liquid supply path and the second liquid feed path respectively,

It is characterized in that, the deviation of gravity center of the center of gravity of first opening and second opening is along the direction of the relative movement The straight line of extension.

14. fluid ejection head according to claim 13, wherein the The lid component is photosensitive film component.

15. fluid ejection head according to claim 13, wherein the type element substrate include third ejiction opening column and Third liquid supply path is arranged with spray along the direction that the direction with the relative movement intersects in third ejiction opening column The ejiction opening of liquid out, the third liquid supply path is arranged to the third ejiction opening supplies liquid and along the side of the intersection To extension,

The The lid component include to the third liquid supply path supply liquid third opening, and

The center of gravity of the center of gravity of first opening, the center of gravity of second opening and third opening is located relative to along described On the straight line for the straight incline that the direction of relative movement extends.

16. fluid ejection head according to claim 13, wherein the type element substrate includes spraying energy production member Part, pressure chamber and liquids recovery path, the ejection energy generating element generate the energy for spraying liquid, the pressure chamber It is internally provided with the ejection energy generating element, the liquids recovery path is from pressure chamber's withdrawal liquid and along the friendship The direction of fork extends, and

The The lid component includes being open from the recycling of liquids recovery path withdrawal liquid.

17. fluid ejection head according to claim 13, wherein the fluid ejection head further includes beating described in support is multiple The supporting member of printing elements substrate,

Multiple type element substrates are aligned to rectilinear form along the direction of the intersection.

18. fluid ejection head according to claim 13, wherein the type element substrate includes spraying energy production member Part and pressure chamber, the ejection energy generating element generate the energy for spraying liquid, and the pressure chamber is internally provided with institute Ejection energy generating element is stated, and

Outer loop of the indoor liquid of pressure to the pressure chamber.

19. a kind of fluid ejection head comprising spray multiple printings of liquid from ejiction opening to the print media relatively moved Device substrate, which is characterized in that

The ejiction opening extends with the direction for being set to the type element substrate and edge and the direction of the relative movement intersect Access connection,

Multiple ejiction openings form multiple row ejiction opening column along the access,

Be provided with multiple row ejiction opening column the type element substrate include corresponding to each ejiction opening column the access and To multiple openings of access supply liquid, and

It is described opening at least one of opening position of centre of gravity relative to include other ejiction openings column in opening center of gravity Deviate the same straight line extended along the moving direction of the print media of relative movement in position.

20. fluid ejection head according to claim 19, wherein the fluid ejection head further include:

Energy generating element generates the energy for spraying liquid；

Pressure chamber is provided with the energy generating element；

Supply passageway supplies liquid to the pressure chamber；

Recovery passage, from pressure chamber's withdrawal liquid；

Liquid is supplied to the pressure chamber from the supply passageway by supply mouth；With

Liquid is recovered to the recovery passage from the pressure chamber by recovery port,

The indoor liquid of pressure passes through the supply passageway and the recovery passage to outer loop.