CN100413689C - Ink-jet head, filter assembly used for manufacturing the ink-jet head, and method for manufacturing the ink-jet head using the filter assembly - Google Patents
Ink-jet head, filter assembly used for manufacturing the ink-jet head, and method for manufacturing the ink-jet head using the filter assembly Download PDFInfo
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- CN100413689C CN100413689C CNB2005101369438A CN200510136943A CN100413689C CN 100413689 C CN100413689 C CN 100413689C CN B2005101369438 A CNB2005101369438 A CN B2005101369438A CN 200510136943 A CN200510136943 A CN 200510136943A CN 100413689 C CN100413689 C CN 100413689C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2002/14306—Flow passage between manifold and chamber
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Abstract
An ink-jet head comprises a passage unit with an ink passage formed therein and a branching passage unit, and is constructed by laminating the passage unit and the branching passage unit with each other. The ink passage extends from a common ink chamber for supplying ink to a pressure chamber toward a nozzle. The branching passage unit includes an ink branching passage for branching ink from an ink introduction port to ink outlet ports. The outlet ports leads out ink into the passage unit. Inlet ports for introducing ink into the common ink chamber are formed on a surface of the passage unit. Ink outlet ports in the branching passage unit are disposed so as to face the inlet ports. Filters for removing foreign matters mixed in ink are formed in the ink branching passage within the branching passage unit.
Description
The application be submitted on September 25th, 2003, application number be 03159831.5, denomination of invention divides an application for the application of " manufacture method of ink gun, filter assemblies and ink gun ".
Technical field
The present invention relates to a kind of to the recording medium ink-jet and the ink gun (ink-jethead) that writes down, the filter assemblies (filter assembly) that is used to make ink gun and the manufacture method of using the ink gun of this assembly.
Background technology
In ink gun, by feed path,, arrive the nozzle of ink-jet then via shared ink chamber, balancing gate pit (pressure chamber) from the ink of black groove.Such ink flow path forms by stacked many pieces of plates, is formed with groove or hole respectively on above-mentioned many pieces of plates.
In addition, in ink gun, consider, need be provided for removing the filter that is mixed in the impurity in the ink from the viewpoint that improves press quality.Wherein, following technology is known, promptly in forming many pieces of plates of above-mentioned ink flow path, in the technology that filter is set on the plate on the border that becomes feed path and shared ink chamber (spy opens flat 6-255101 communique), the technology (spy opens flat 2-198851 communique) of filter is set on the connected component between shared ink chamber and the balancing gate pit.
But, owing to be provided with on the plate on the border that becomes feed path and shared ink chamber under the situation of filter, need with the corresponding filter that is provided with of each shared ink chamber, and be provided with on the connected component between shared ink chamber and the balancing gate pit under the situation of filter, need the corresponding filter that is provided with each balancing gate pit, so the area of each filter is less, and quantity is more.In this case, filter is easy to generate scale error.It is discrete that this scale error makes the flow path resistance of the ink flow path corresponding with each nozzle take place easily, thereby cause press quality to descend.
Summary of the invention
The object of the present invention is to provide a kind of flow path resistance by the limit ink stream discrete and can improve press quality ink gun, be used to the ink gun manufacture method making the filter assemblies of this ink gun and use this assembly.
According to a first aspect of the invention, a kind of ink gun is provided, this ink gun is provided with: channel unit, this channel unit have a plurality of nozzles that spray ink, a plurality of balancing gate pits that are connected with said nozzle, supply with the shared black chamber of ink and the inlet that ink is imported above-mentioned shared black chamber to above-mentioned balancing gate pit; And difference channel unit, this difference channel unit has the ink introducing port that imports ink, correspondingly with above-mentioned inlet be provided with and ink exported to the ink export mouth of above-mentioned inlet, make ink from above-mentioned ink introducing port to the ink difference stream of above-mentioned ink export mouth shunting and be located at ink filter device in the above-mentioned ink difference stream.
Under the situation in filter is located at the ink difference stream of the difference channel unit with said structure, be located between inlet and the shared black chamber with filter, the situation between shared black chamber and the balancing gate pit etc. in the channel unit compares, can increase the area of filter, and reduce the quantity of filter.That is, can make filter integrated.Thus, filter is difficult for producing scale error, so the flow path resistance of energy limit ink stream is discrete, improves press quality.
According to a second aspect of the invention, a kind of filter assemblies is provided, be used to make ink gun, this ink gun is provided with: channel unit, this channel unit have a plurality of nozzles that spray ink, a plurality of balancing gate pits that are connected with nozzle, supply with the shared black chamber of ink and the inlet that ink is imported shared black chamber to the balancing gate pit; And a plurality of filter holding components, be configured on the surface of channel unit, cover inlet respectively.Filter assemblies is provided with: a plurality of filter holding components of configuration adjacent one another are; Interconnect portion, connect adjacent filter holding components, the bending strength of the bending strength ratio filter holding components of the boundary of itself and filter holding components is little; And the filter that on a plurality of filter holding components, forms respectively.
According to a third aspect of the invention we, a kind of manufacture method of ink gun is provided, have following operation: form the operation of channel unit, this channel unit have a plurality of nozzles of spraying ink, be connected with nozzle a plurality of balancing gate pits, to the shared black chamber of balancing gate pit's supply ink and the inlet that ink is imported shared black chamber; Form the operation of filter assemblies, this filter assemblies is provided with: a plurality of filter holding components of configuration adjacent one another are; Interconnect portion, connect adjacent filter holding components, the bending strength of the bending strength ratio filter holding components of the boundary of itself and filter holding components is little; And the filter that on a plurality of filter holding components, forms respectively; With the border of filter holding components on, make the portion's of interconnecting bending, thereby make a plurality of filter holding components operation separated from one another; And a plurality of filter holding components are configured on the surface of channel unit, make the filter operation relative with inlet.
According to above-mentioned second and the third aspect, separated from one another by a plurality of filter holding components that make filter assemblies, and each filter holding components is configured on the channel unit surface, make filter relative, thereby can realize the ink gun of above-mentioned first aspect with comparalive ease with the inlet on channel unit surface.Therefore, the effect that identical with above-mentioned first aspect, the flow path resistance of ink flow path that can obtain to limit ink gun is discrete, improve press quality.
Description of drawings
By the reference the description of the drawings, other purpose of the present invention, feature and advantage will become clearer.
Fig. 1 is the overall structure figure of an example of the printer of the expression ink gun that comprises first embodiment of the invention.
Fig. 2 is the bottom view of ink gun arranged side by side shown in Figure 1.
Fig. 3 is the partial sectional view of ink gun shown in Figure 1.
Fig. 4 is the decomposition diagram of difference channel unit shown in Figure 3.
Fig. 5 A is the fragmentary, perspective view of expression to an example of the ink introduction method of ink introducing port.
Fig. 5 B is the partial sectional view of cartridge shown in Fig. 5 A and difference channel unit.
Fig. 6 is the amplification view of the ink flow path in the expression channel unit shown in Figure 3.
Fig. 7 is the partial sectional view corresponding with Fig. 3 of the ink gun of second embodiment of the invention.
Fig. 8 is the decomposition diagram corresponding with Fig. 5 of difference channel unit of the ink gun of presentation graphs 7.
Fig. 9 is the partial sectional view corresponding with Fig. 3 of the ink gun of third embodiment of the invention.
Figure 10 is the decomposition diagram corresponding with Fig. 5 of a part of difference channel unit of the ink gun of presentation graphs 9.
Figure 11 is the perspective view of the filter assemblies that uses for the ink gun of shop drawings 9 of expression.
Figure 12 is that expression makes the filter holding components in the filter assemblies that is included in Figure 11 separated from one another, and the perspective view of the state before being configured in it on surface of channel unit.
The specific embodiment
Fig. 1 is the overall structure figure of an example of the printer of the expression ink gun that comprises first embodiment of the invention.The ink-jet printer 1 of present embodiment is the color inkjet printer with 4 ink guns.Ink-jet printer 1 has paper feed part 11 (left side among the figure) and row's paper portion 12 (right sides among the figure), forms from the paper transportation path of paper feed part 11 to row's paper portion 12 conveyance of sheets in device inside.
Downstream at next-door neighbour's paper feed part 11 disposes a pair of feeding-in roll 5a, 5b, will as the paper of medium from figure left to right-hand conveying.Pars intermedia in paper transportation path disposes: two leather belt rollers 6,7; And around cycloconveyor belt 108, to be erected between two leather belt rollers 6,7.
In the insertion and drain position of paper, dispose respectively and press town parts 9a, 9b with respect to leather belt roller 6.Press town parts 9a, 9b to be used for paper is pressed on the conveyor surface of belt conveyor 8 and it is carried reliably, so that the paper on the belt conveyor 8 does not float from conveyor surface.
Conveyance direction downstream side along the belt conveyor 8 of paper transportation path is provided with mechanism for stripping 10.Mechanism for stripping 10 is constituted as, and will peel off from this conveyor surface by means of the paper that absorption affinity remains on the conveyor surface of belt conveyor 8, carries to right-hand row's paper portion 12 then.
4 ink guns 2 have ink gun main body 2a respectively in its lower end.Ink gun main body 2a has the square-section respectively, and configuration adjacent one another are, makes its length direction become the direction vertical with sheet transport direction (the paper vertical direction of Fig. 1).That is, this printer 1 is a line printer.Each bottom surface of 4 ink gun main body 2a is relative with paper transportation path, is provided with nozzle on their bottom surface, and this nozzle forms a plurality of inkjet mouths 13 (with reference to Fig. 2) with micro-aperture.Spray the ink of magenta, yellow, cyan, black respectively from 4 ink gun main body 2a.
Ink gun main body 2a is configured to, and is formed with little clearance between the conveyor surface of its lower surface and belt conveyor 8, is formed with paper transportation path in this gap portion.Therefore, when the paper of carrying by belt conveyor 8 passes through the below of 4 ink gun main body 2a of next-door neighbour in order, spray each chromatic ink from nozzle to the upper surface (printing surface) of this paper, thereby can on paper, form desirable coloured image.
Fig. 3 shows the partial sectional view of ink gun 2.This ink gun 2 is installed with respect to the suitable parts 14 that are located in the printer 1 by support 15.This support 15 has vertical component effect 15a and horizontal part 15b, forms contrary " T " font in side view.Vertical component effect 15a is installed on the parts 14 by means of screw 16, and at the lower surface of horizontal part 15b, by isolated part (spacer) 40, is fixed with ink gun main body 2a.2a is from downside for the ink gun main body, comprises channel unit 20 in order, is fixed on channel unit 20 lip-deep performance elements (executing agency) 19 and performance element is clipped in the middle and is fixed on channel unit 20 lip-deep difference channel units 40.
Following with reference to Fig. 3 and Fig. 4, the structure of difference channel unit 40 is described.
As shown in Figure 4, the width central portion in a side of first plate, 41 length directions is formed on the ink introducing port 41a that connects on the thickness direction by etching etc.Shown in Fig. 5 A, ink via cartridge 201 and the pipe 200a that is connected with this cartridge 201, is imported into ink introducing port 41a from providing ink sources such as black grooves.
Shown in Fig. 5 B, cartridge 201 has: the base portion 201b of tubular; And reducing diameter part 201c, form pointed at side formation reduced diameter and the front end 201a opposite with base portion 201b.Base portion 201b is pressed among the ink introducing port 41a, and the end of the pipe 200a that draws from providing ink source 200 by outside be embedded on the outer peripheral face of reducing diameter part 201c.If the part of the mounting pipe 200a of cartridge 201 (reducing diameter part 201c) is very thin shape, then easy mounting pipe 200a.In addition,, providing ink source 200 is directly installed on the cartridge 201, also can carries out fitting operation equally easily if omit pipe 200a.
Preferred cartridge 201 is by constituting with first plate, 41 identical materials.In this case because both linear expansion coefficient is identical, so both because the expansion that temperature and humidity changes, dwindle identical, thereby can keep sealing between the cartridge 201 and first plate 41 well.Thus, can prevent that air from entering through the base portion 201b of cartridge 201 and the gap between the ink introducing port 41a.
The preferred cartridge 201 and first plate 41 are made by stainless steel.Because stainless anti-ink corrosivity is good, so can use various inks.In addition,, pass through cartridge 201 and ink introducing port 41a, in the ink difference stream of difference channel unit 40, produce bubble so can prevent air because stainless anti-air permeability is good.
In addition, on second plate 42, as shown in Figure 3 and Figure 4, by pressure processing etc., (the paper vertical direction among Fig. 3) along its length forms the hole of the ink housing tube 42a that is configured for storage ink.On the sidewall in the hole that constitutes this ink housing tube 42a, as shown in Figure 4, also form a plurality of otch 42c of semicircular column continuously.
On part metallic plate 43a, corresponding with the inlet 20a (back explanation) of channel unit 20 of the 3rd plate 43, form ink export mouth 43b (with reference to Fig. 3) identical shaped with inlet 20a, that on thickness direction, connect.The formation position of this ink export mouth 43b is also corresponding with the otch 42c of second plate 42 shown in Figure 4.
The resin plate 43c of the 3rd plate 43, with the corresponding part of inlet 20a of the inlet 20a (back explanation) of channel unit 20, on the promptly corresponding part, form ink filter device 43f with inlet 20a and ink export mouth 43b identical appearance with above-mentioned ink export mouth 43b.
By metallic plate 43a is carried out etching, form ink export mouth 43b, then the part corresponding with ink export mouth 43b of resin plate 43c carried out excimer laser processing, adjacent a plurality of holes that minute diameter (16～24 μ m) is set, concentrated area, thus form filter 43f.
In addition, on the metallic plate 43a of the 3rd plate 43, make part shown in dotted lines in Figure 4 form groove by etching etc., and stay the zone that comprises ink export mouth 43b.Thus, the side relative with channel unit 20 at the 3rd plate 43 forms recess 43g.As shown in Figure 3, this recess 43g is formed for disposing the space 44 of performance element 19 (drawing with double dot dash line) on channel unit 20 surfaces of Fig. 4.But, in corresponding zone (zone in the dashdotted outside among Fig. 4), the outside of metallic plate 43a, form height to side-prominent this protuberance of protuberance 43h (with reference to Fig. 3) 43h of channel unit 20 1 and make and flexible printed circuit board described later (FPC:Flexible Printed Circuit) 4 44 can be drawn out to the outside from the space with the long limits of performance element 19.By means of this protuberance 43h, above-mentioned space 44 is closed.
On metallic plate 43a,, can reduce machining period by etching that is used to form recess 43g simultaneously and the etching that is used to form ink export mouth 43b.
By mutual stacked first plate 41, second plate 42 and the 3rd plate 43, can form the ink difference stream that makes the ink shunting from ink introducing port 41a to ink export mouth 43b.
The inlet 20a of above-mentioned channel unit 20 and the regional corresponding configuration that performance element 19 is not set.Specifically, as shown in Figure 4, inlet 20a is by constituting with the lower part, promptly the inlet of the diagonal angle, length direction two ends of channel unit 20 configuration with at 2 one of the short brinks of the performance element 19 parallel opposite side inlets of configuration alternately over the ground.Like this, a plurality of inlet 20a arranged spaced on the length direction of channel unit 20, thereby even the longer dimension of ink gun 2, the ink in the ink housing tube 42a also can be resisted flow path resistance, and stably supplies with to channel unit 20.
Below, with reference to Fig. 6, the ink flow path in the purpose is elaborated.Fig. 6 is the amplification view of the ink flow path in the expression channel unit shown in Figure 3.
As shown in Figure 6, channel unit 20 has had the structure of nine pieces of thin metal plates 21,22,23,24,25,26,27,28,29 stacked.Menifold stream 30 (shared ink chamber) is crossed over and is formed from last several the 5th～layer 7 flat boards 25～27, and this menifold stream 30 is communicated with above-mentioned inlet 20a via not shown path.Be formed with communication hole 31 on Siping City's plate 24 of side thereon on the throne, this communication hole 31 is connected with the slit 32 that forms on three layer flat plate 23.
Slit 32 by on second layer flat board 22, form intercommunicating pore 33, and on ground floor flat board 21, form to such an extent that an end of balancing gate pit 34 is communicated with.This balancing gate pit 34 is used to accept to be fixed on the driving of the performance element 19 on channel unit 20 upper surfaces and ink is exerted pressure it and the corresponding one by one setting of each nozzle 13.The other end of balancing gate pit 34 by connecting the second～eight layer of nozzle that flat board forms communication hole 35, is communicated with the nozzle of the very thin taper that forms on the 9th layer of flat board 29.Front end at this nozzle is formed with inkjet mouth 13a.
The flat shape of balancing gate pit 34 is elongated approximate rhombus or approximate parallelogram, but its diagram is omitted.
In having the ink gun main body 2a of said structure, for example, shown in Fig. 5 A, 200 inks that import at first are imported into the ink housing tube 42a from ink introducing port 41a from the providing ink source, temporarily store therein.Then, the ink in the ink housing tube 42a is via notch portion, and by filter 43f, removes the impurity that is mixed in the ink by filter 43f therein.Ink by filter 43f arrives ink export mouth 43b (with reference to Fig. 4).Then, ink is directed to the inlet 20a of channel unit 20 from ink export mouth 43b, thereby is directed in the menifold stream 30.As shown in Figure 6, the ink in the menifold stream 30 is supplied with to each balancing gate pit 34 via communication hole 31, slit 32, intercommunicating pore 33.Then, in each balancing gate pit 34, the ink that is applied pressure by means of the back explanation arrives the driving of performance element 19 sprays from inkjet mouth 13 by nozzle communication hole 35.
As the power supply part to performance element 19, as shown in Figure 6, FPC 4 is bonded on the upper surface of performance element 19.FPC 4 draws from the sidepiece of ink gun main body 2a as shown in Figure 3, and is crooked upward, and is electrically connected with the driver IC that is configured in parts 14 sides (not shown).The driving pulse that generates in this driver IC is supplied to the electrode of performance element 19 via FPC 4, make above-mentioned active portion distortion thus.This control of Electric potentials is independently carried out for each balancing gate pit 34.
In addition, as shown in Figure 3,, dispose the seal member 36 of silicon series at the sidepiece of the ink gun main body 2a corresponding with the outlet of FPC 4.Sealing parts 36 are born following effect, promptly protect FPC 4, and enclosure space 44, invade in the above-mentioned space to prevent ink etc.
As mentioned above, according to the ink gun 2 of present embodiment owing in the ink difference stream of difference channel unit 40, ink filter device 43f is set, so with in channel unit 20, filter is set and compares, can increase the area of filter, and reduce the quantity of filter.That is, can make filter integrated.Thus, filter 43f is difficult for producing scale error, so the flow path resistance of energy limit ink stream is discrete, improves press quality.
In addition, (part of for example communicate hole 31 or slit 32) is provided with under the situation of filter in the ink flow path of channel unit 20, and in order to make the filters locations alignment on each several part, dull and stereotyped 21～29 (with reference to Fig. 6) contraposition precision prescribed each other is than higher.Relative therewith, in the present embodiment, not very high by the aligning accuracy requirement of filter 43f reliably in order to make ink.In addition, owing to filter is not formed on dull and stereotyped 21～29, so the flat board 21～29 of formation channel unit 20 is easy to bit comparison.Therefore, ink gun 2 easy to manufacture, and can improve qualification rate and reduce manufacturing cost.
In addition, form on the plate 43 of filter 43f in the plate that constitutes difference channel unit 40.Thus, by for example etching and processing or Laser Processing, can easily form filter 43f.
In addition,, compare, can make the shape and size in hole stable with etching and processing forming under the situation in a plurality of holes that constitute filter 43f by excimer laser processing.Thus, can stablize the flow path resistance of ink flow path.
In addition, owing to the 3rd plate 43 that is formed with filter 43f is resin plate 43c such as metallic plate 43a and polyimides stacked structures that form mutually, so by metallic plate 43a is carried out etching, can form ink export mouth 43b, and process by excimer laser, on the part corresponding of resin plate 43c, a plurality of holes are set, thereby can easily form filter 43f with ink export mouth 43b.Adopt above-mentioned filter formation method, can reduce the manufacturing cost of filter 43f.
In this case, compare with the situation that on single plate, forms filter and since resin plate 43c by metallic plate 43a as the substrate support, so can keep the intensity of filter 43f well.And, because the 3rd plate 43 has good intensity, so the stacked operation between the 3rd plate 43 and second plate 42 is carried out easily.
In addition, filter 43f is configured between ink housing tube 42a and the ink export mouth 43b.More particularly, form on the part the 3rd plate 43 that is formed with ink export mouth 43b, corresponding with ink export mouth 43b of filter 43f in the plate that constitutes difference channel unit 40, the ink that temporarily is stored among the ink housing tube 42a passes through otch 42c, through filter 43f, arrive ink export mouth 43b then.In this case, in the front and back of ink by filter 43f, promptly from otch 42c part to ink export mouth 43b, not bigger variation of flow path resistance.Therefore, flowing of ink is steady, thereby has prevented to produce by filter 43f the time bubble.
Following with reference to Fig. 7 and Fig. 8, the related ink gun of second embodiment of the present invention is described.The ink gun 102 of present embodiment only difference channel unit is different with first embodiment.Channel unit 20 waits other structural element identical with first embodiment, thus be marked with identical label, and omit its explanation.
As shown in Figure 8, the width central portion in a side of first plate, 51 length directions by etching etc., is formed on the ink introducing port 51a that connects on the thickness direction.Identical with the situation of first embodiment, ink is imported into ink introducing port 51a from providing ink sources 200 such as black groove (with reference to Fig. 5 A).In addition, as shown in Figure 8, the side relative with the 3rd plate 53 at first plate 51 is formed with an end and is connected with ink introducing port 51a, and the other end extends to the groove 51b of the length direction substantial middle portion of plate.
In the substantial middle of the metallic plate 53a of the 3rd plate 53, promptly come down on the middle body of the ink housing tube 52a that illustrates later, be formed with 3 holders communication hole 53b adjacent one another are along the length direction of plate.On the part corresponding with holder communication hole 53b of the resin plate 53c of the 3rd plate 53, it is identical and have a filter 53f in a plurality of holes to be formed with profile and the holder hole 53b that communicates.
On metallic plate 53a, form holder communication hole 53b by etching, then on the part corresponding of resin plate 53c with holder communication hole 53b, by excimer laser processing and the concentrated area is provided with the hole of a plurality of adjacent micro-apertures (16～24 μ m), thereby form filter 53f.
Side relative at second plate 52 with the 3rd plate 53, by etching partially (half etching) etc., form the recess that constitutes ink housing tube 52a, this recess has the identical flat shape (with reference to Fig. 4) in hole with the ink housing tube 42a that constitutes first embodiment.On the sidewall of the recess that constitutes this ink housing tube 52a,, also be formed with otch 52c continuously with otch 42c (with reference to Fig. 4) the same level shape of first embodiment by etching partially etc.On near part corresponding this otch 52c with the inlet 20a of channel unit 20, also be formed on connect on the thickness direction, with the inlet 20a the identical ink export mouth 52b of shape.
In a side relative of second plate 52, form the recess 52g that the recess 43g (with reference to Fig. 4) with first embodiment has the same level shape by etching partially etc. with channel unit 20.In addition, (zone in the chain-dotted line outside among Fig. 8) is formed with the protuberance 52h (with reference to Fig. 7) identical with the protuberance 43h of first embodiment in corresponding zone, the outside with performance element 19 long limits of second plate 52.
Have first plate 51, second plate 52 of said structure and be configured in the 3rd plate 53 between them and make them stacked mutually by configuration, thereby on difference channel unit 50, formed from ink introducing port 51a to ink export mouth 52b, make the ink difference stream of ink shunting.
In having the ink gun main body 102a of said structure, for example, shown in Fig. 5 A, 200 inks that import at first pass through filter 53f from ink introducing port 51a via groove 51b from the providing ink source, remove the impurity that is mixed in the ink by means of filter 53f therein.Ink by filter 53f is imported into ink housing tube 52a by holder communication hole 53b, and temporarily is stored among the ink housing tube 52a.Then, the ink in the ink housing tube 52a is via otch 52c part, and is directed to the inlet 20a of channel unit 20 from ink export mouth 52b, thereby is imported in the menifold stream 30.Flow identical with above-mentioned first embodiment of 13 ink from menifold stream 30 to inkjet mouth is so omit its explanation.
As mentioned above, ink gun 102 according to present embodiment, because filter 53f is configured between ink introducing port 51a and the ink housing tube 52a, so compare with the situation and first embodiment of filter deployment in channel unit 20, can further increase the area of filter and reduce its quantity.That is to say, can further make filter integrated.Therefore, can obtain the effect that the flow path resistance of limit ink stream is discrete, improve press quality more reliably.
In addition, because filter 53f forms at the middle body of ink housing tube 52a in fact, so compare with first embodiment, operations such as excimer laser processing are carried out easily, thereby can shorten process time.
In addition, by the structure of configuration filter between ink introducing port 51a and ink housing tube 52a, can improve and the relevant frees degree such as the position of filter, quantity, area, shape.Therefore, can on the position different, filter be set, perhaps suitably change quantity, area, shape of filter etc. with the filter 53f of second embodiment.For example, if reduce the quantity of filter and increase its area, the then further decline of the flow path resistance of limit ink stream, thus can prevent further that ink is blocked in the hole that constitutes filter and the generation defective.In addition, if, the possibility height of hole deficiency then takes place, but utilize the structure of present embodiment,, can alleviate the problem of this hole deficiency by increasing the area of filter 53f for example by the hole of a plurality of minute diameter of formation such as etching.In addition, can make the area of filter and shape favourable on intensity.
In addition, in that to constitute the 3rd plate 53 that forms, be formed with filter 53f on the plate 53 that does not form on the flat board 21～29 (with reference to Fig. 6) of channel unit 20 in the plate that filter, filter 53f constituting difference channel unit 50 stacked and constitute etc. by metallic plate 53a and resin plate 53c, can obtain and the identical effect of above-mentioned first embodiment.
Following with reference to Fig. 9～Figure 12, the ink gun of the 3rd embodiment of the present invention is described.The ink gun 202 of present embodiment only difference channel unit is different with first and second embodiments.Channel unit 20 waits other structural element identical with first embodiment, thus be marked with identical label, and omit its explanation.
As shown in Figure 9, difference channel unit 60 comprises first plate 61, second plate 62 and filter holding components 63.First plate 61 and second plate 62 are made of metals such as stainless steels, and as shown in figure 10, profile and is laminated to each other much at one.On the other hand, filter holding components 63 is included in the filter assemblies 73 (with reference to Figure 11) that illustrates later, as shown in figure 12, respectively enters the mouth 20a and disposes in the surface coverage of channel unit 20.On this filter holding components 63, dispose second plate 62.
As shown in figure 10, first plate 61 is identical with first plate 41 of first embodiment, has ink introducing port 61a at the width central portion of length direction one side.
In a side relative of second plate 62 with first plate 61, same with recess and the otch 52c (with reference to Fig. 8) of the ink housing tube 52a that constitutes second embodiment, be formed with the recess and the otch 62c that constitute ink housing tube 62a.Near this otch 62c, same with the ink export mouth 52b of second embodiment, be formed with the ink export mouth 62b that on thickness direction, connects.
Side relative with channel unit 20 at second plate 62 in the chain-dotted line institute area surrounded of Figure 10, is formed with protuberance 62h.Part beyond the protuberance 62h is in the same plane.The height of this protuberance 62h and protuberance 42h, the 52h of first and second embodiments are same, make FPC 4 to be drawn from space 44.By this protuberance 62h, the space 44 that is used to dispose performance element 19 is closed (with reference to Fig. 9).When second plate 62 is clipped in the middle filter holding components 63 and is fixed on the channel unit 20, on the part that does not have configuration filter holding components 63, form space 44.
Following with reference to Figure 11, the filter assemblies 73 of the ink gun 202 that is used to make present embodiment is described.
Interconnect the 73d of portion and on the direction that connects filter holding components 63, have long elongated shape, respectively interconnect portion 73d's and filter holding components 63 between the bending strength of bending strength ratio filter holding components 63 of boundary little.And, each peripheral connecting portion 73e's and filter holding components 63 between the bending strength of boundary also the bending strength than filter holding components 63 is little.
On 4 filter holding components 63, form corresponding filter 63f respectively with inlet 20a (with reference to Figure 12).In 4 filter holding components 63, forward 2 are approximate rectangle among Figure 11, have and become 2 a pair of inlet 20a and distinguish 2 corresponding filter 63f.Remaining flows through filter holding components 63 and is approximate L font, have with become 2 a pair of inlet 20a and with 13 corresponding filter 63f of 20a difference that enter the mouth of the relative configuration of these 2 inlet 20a.
On the surface of channel unit 20, filter holding components 63 forms and can not overlap with performance element 19 and the shape of mutual configuration.In addition, in filter assemblies shown in Figure 11 73, filter holding components 63 disposed adjacent, shorter than being configured between the parts of channel unit 20 surface when going up distance (with reference to Figure 12).
As shown in figure 11, filter assemblies 73 is stacked mutually and constitute by the resin plate 73c of the metallic plate 73a of stainless steel etc. and polyimides etc.Each inscape of filter assemblies 73 is to form like this, promptly metallic plate 73a is carried out etching, the profile of filter holding components 63 and frame section 73g makes after left behind, resin plate 73c is carried out Laser Processing, the profile that interconnects 73d of portion and peripheral connecting portion 73e be left behind with filter holding components 63 and frame section 73g.
Therefore, filter holding components 63 is stepped constructions of metallic plate 73a and resin plate 73c.On the part corresponding of the metallic plate 73a of downside with filter 63f, by etching, form opening 63b shown in Figure 9, on the part that is formed with opening 63b of the resin plate 63c of upside, concentrate the hole that a plurality of adjacent minute diameter (16～34 μ m) are set then by excimer laser processing, thus on filter holding components 63 formation filter 63f.
Carry out simultaneously to the etching of the metallic plate 73a of filter assemblies 73 with to etching metallic plate 63a, that be used to form opening 63b of the metallic plate 63a of filter holding components 63, thereby can reduce machining period.
As shown in figure 12, configuration has the filter holding components 63 of said structure on channel unit 20, by stacked second plate 62 and first plate 61 thereon, thereby in difference channel unit 60, form from ink introducing port 61a to ink export mouth 62b, then to the filter 63f of formation on filter holding components 63, the ink difference stream that ink is shunted.
As mentioned above, according to the filter assemblies 73 of present embodiment, by with 4 filter holding components 63 as a parts manufacturing, thereby can limiting part quantity.Therefore, filter assemblies 73 can be realized miniaturization when having 4 filter holding components 63.
In addition, because 63 configurations adjacent one another are of filter holding components, so particularly under the situation that adopts excimer laser processing, can shorten forming needed process time of filter 63f.This is because the distance between the filter 63f is shorter, and to add the displacement of laser head in man-hour shorter so carry out excimer laser.Owing to shortened process time, so can reduce manufacturing cost.
In addition, filter holding components 63 disposed adjacent, make shorter than being configured between the parts of channel unit 20 surfaces when going up distance, owing to filter 63f centralized configuration, so improved particularly above-mentioned working (machining) efficiency.On the other hand, when being configured in each filter holding components 63 on channel unit 20 surfaces, with they configured separate, thus the various designs of correspondence inlet 20a flexibly.
In addition, as shown in figure 12, on the surface of channel unit 20, filter holding components 63 forms and can not overlap with performance element 19 and the shape of mutual configuration, so can realize the design of miniaturization between performance element 19 and the filter holding components 63.Thus, can realize the miniaturization of ink gun 202a.
In addition, the 73d of the portion that interconnects by means of have long elongated shape on the direction that connects filter holding components 63 interconnects each filter holding components 63, thereby each filter holding components 63 is separated.
In addition, surround 4 filter holding components 63 frame section 73g on every side, so operation easily owing to have.For example, when transporting filter assemblies 73, can alleviate problems such as filter holding components 63 breakages.
In addition, owing to filter holding components 63, interconnect the 73d of portion, frame section 73g and peripheral connecting portion 73e is integrally formed, so can reduce manufacturing cost.Below, the manufacture method of the ink gun 202 of the filter assemblies 73 that uses present embodiment is described.But, only the manufacture method of the ink gun main body 202a of ink gun shown in Figure 9 202 is described here.
At first, make dull and stereotyped 21～29 (with reference to Fig. 6) alignment, stacked, thereby form channel unit 20.On the other hand, make filter assemblies 73 shown in Figure 11.
In the manufacturing process of filter assemblies 73, as mentioned above, filter holding components 63, interconnect the 73d of portion, frame section 73g and peripheral connecting portion 73e is integrally formed.In addition, in this operation, 4 filter holding components 63 disposed adjacent make than being configured in distance (with reference to Figure 12) weak point between the parts of channel unit 20 surfaces when going up.In addition, as mentioned above, by excimer laser processing formation filter 63f.
Then, and filter holding components 63 between the border on, make to interconnect the 73d of portion bending, thereby make 4 filter holding components 63 separated from one another.In addition, and filter holding components 63 between the border on, make peripheral connecting portion 73e bending, thereby make frame section 73g and the filter holding components 63 adjacent separated from one another with frame section 73g.In this separation circuit, for example can catch filter assemblies 73 with hand, to the suitable 73d of the portion that interconnects or the peripheral connecting portion 73e application of force, thereby cut off them.
Then as shown in figure 12, each filter holding components 63 is configured on the surface of channel unit 20, makes each filter 63f relative with inlet 20a.
Then, performance element 19 alternatively is configured on the surface of channel unit 20, it is not overlapped with the filter holding components 63 of above-mentioned configuration.The operation of this configuration performance element 19 can perhaps also can be carried out before or after the operation of configuration filter holding components 63 simultaneously.
Then, be fixed on the channel unit 20, make each filter holding components 63 contact with the appropriate location of second plate, 62 lower surfaces with constituting difference channel unit first plate 61 60, that be engaged with each other and second plate 62.
In having the ink gun main body 202a of said structure, for example, shown in Fig. 5 A, 200 inks that import at first are imported into ink housing tube 62a from ink introducing port 61a from the providing ink source, temporarily store therein.Then, the ink in the ink housing tube 62a is via otch 62c, and 62b is derived from the ink export mouth, and then by being formed on the filter 63f on the filter holding components 63, removes the impurity that is mixed in the ink by means of filter 63f therein.The ink that has passed through filter 63f is directed to the inlet 20a of channel unit 20, thereby is imported in the menifold stream 30 by opening 63b.13 ink is mobile identical with above-mentioned first embodiment from menifold stream 30 to inkjet mouth, so omit its explanation.
As mentioned above, adopt to use ink gun 202 manufacture methods of filter assemblies 73, can obtain the effect identical with above-mentioned filter assemblies 73.In addition, use filter assemblies 73, can make following ink gun 202, this ink gun 202 can be realized the effect same with the ink gun 202 of first embodiment, and flow path resistance that can the limit ink stream disperses, the raising press quality.
In above-mentioned first, second and the 3rd embodiment, the hole that constitutes filter 43f, 53f, 63f is not limited to utilize excimer laser processing and the hole that forms, and can in all sorts of ways forms.
In addition, resin plate 43c, 53c, 63c, 73c can also be made of various resins such as polyester, vinyl chloride except being made of polyimides.In addition, metallic plate 43a, 53a, 63a, 73a, first plate 41,51,61 and second plate 42,52,62 can also be made of for example metals such as nickel alloy such as 42 alloys, dilval except being made of stainless steel.
In addition, being formed with the stepped construction that relatively is not limited to metallic plate and resin plate of filter 43f, 53f, 63f, also can be the plate that is made of homogenous material.
In addition, ink introducing port 41a, 51a, 61a are not limited to one, can form with any amount, and its shape also can be carried out various changes.
In addition, the shape of ink export mouth 42b, 52b, 62b also can be carried out various changes, except circle, also can be for example square or oval.And first can form the identical profile with ink export mouth 62b with filter 43f, the 63f of the 3rd embodiment.
In addition, as long as the holder of second embodiment communication hole 53b can import ink ink housing tube 52a, can be to form on quantity, shape and the position arbitrarily.In this case, need make quantity, shape and the position of filter 53f corresponding with holder communication hole 53b.
In addition, in first and second embodiments,, be not limited to constitute by stacked many pieces of plates as long as the filter of difference channel unit is located in the ink difference stream.
In addition, in the 3rd embodiment, filter holding components 63 can be designed to cover the 20a that enters the mouth arbitrarily.
In addition, in the 3rd embodiment, in making the operation of filter assemblies 73, can carry out pressure processing and make filter holding components 63, interconnect the 73d of portion, peripheral connecting portion 73e and frame section 73g left behind as inscape.
In addition, in the 3rd embodiment, interconnect 73d of portion and peripheral connecting portion 73e and form to such an extent that have filter assemblies 73 not damaged intensity in the process of transporting is got final product.Therefore, interconnect on any one that among 73d of portion and the peripheral connecting portion 73e any one can be in resin plate 73c and metallic plate 73a and form, and do not limit its quantity and position etc. especially.
In addition, in the 3rd embodiment, filter holding components 63, interconnect the 73d of portion, frame section 73g and peripheral connecting portion 73e can not be integrally formed.
In addition, in the 3rd embodiment, the quantity that is included in the filter holding components 63 in the filter assemblies 73 can be more than 2 at least.
The present invention is except being applicable to the line ink-jet printer of the above-mentioned embodiment that fixing ink gun main body 2a conveyance of sheets also prints, for example also be applicable in conveyance of sheets, ink gun main body 2a moved back and forth and the ink-jet printer of the serial print formula of printing on the direction vertical with conveyance of sheets.
In addition, the invention is not restricted to ink-jet printer, can also be applicable to for example facsimile machine or the duplicator of ink jet type.
Although describe the present invention according to above-mentioned embodiment, obviously, those skilled in the art can carry out various replacements, modification and distortion to the present invention.Therefore, above-mentioned preferred implementation only is for the present invention is described, rather than determinate.Under the situation of claim of the present invention institute restricted portion, can carry out various changes.
Claims (19)
1. filter assemblies, be used to make ink gun, this ink gun is provided with: channel unit, this channel unit have a plurality of nozzles that spray ink, a plurality of balancing gate pits that are connected with said nozzle, supply with the shared black chamber of ink and the inlet that ink is imported above-mentioned shared black chamber to above-mentioned balancing gate pit; And a plurality of filter holding components, be configured on the surface of above-mentioned channel unit, cover above-mentioned inlet respectively,
Above-mentioned filter assemblies is provided with:
Above-mentioned a plurality of filter holding components of configuration adjacent one another are;
Interconnect portion, connect adjacent above-mentioned filter holding components, this interconnects the boundary of portion and above-mentioned filter holding components, compares with above-mentioned filter holding components, and the former bending strength is less; And
The filter that on above-mentioned a plurality of filter holding components, forms respectively.
2. filter assemblies according to claim 1,
Above-mentioned a plurality of filter holding components disposed adjacent makes that distance is short between parts than on the surface that it is configured in above-mentioned channel unit the time.
3. filter assemblies according to claim 1,
Above-mentioned filter forms by excimer laser processing.
4. filter assemblies according to claim 1,
Above-mentioned filter holding components comprises the plate that is made of metal and by the plate that resin constitutes, the above-mentioned plate that is formed with above-mentioned filter is the plate that is made of resin.
5. filter assemblies according to claim 1,
Above-mentioned a plurality of filter holding components forms the shape that can dispose alternately, makes not overlap with the executing agency of the volume-variation that makes above-mentioned balancing gate pit on the surface of above-mentioned channel unit.
6. filter assemblies according to claim 1,
The above-mentioned portion that interconnects has long elongated shape on the direction that connects above-mentioned filter holding components.
7. filter assemblies according to claim 1,
Above-mentioned filter holding components and the above-mentioned portion that interconnects are integrally formed.
8. filter assemblies according to claim 1 also is provided with:
Frame section, surround above-mentioned a plurality of filter holding components around; And
The periphery connecting portion couples together said frame portion and the above-mentioned filter holding components adjacent with said frame portion, and the boundary of this periphery connecting portion and above-mentioned filter holding components is compared with above-mentioned filter holding components, and the former bending strength is less.
9. filter assemblies according to claim 8,
Above-mentioned filter holding components, above-mentioned portion, said frame portion and the above-mentioned peripheral connecting portion of interconnecting are integrally formed.
10. filter assemblies according to claim 1,
Above-mentioned filter holding components is to comprise the difference channel unit of the ink housing tube that is used for storage ink, constitutes above-mentioned ink housing tube and ink is exported to the parts of part between the ink export mouth of above-mentioned inlet.
11. the manufacture method of an ink gun has following operation:
Form the operation of channel unit, this channel unit has a plurality of nozzles that spray ink, a plurality of balancing gate pits that are connected with said nozzle, supplies with the shared black chamber of ink and the inlet that ink is imported above-mentioned shared black chamber to above-mentioned balancing gate pit;
Form the operation of filter assemblies, this filter assemblies is provided with: above-mentioned a plurality of filter holding components of configuration adjacent one another are; Interconnect portion, connect adjacent above-mentioned filter holding components, this interconnects the boundary of portion and above-mentioned filter holding components, compares with above-mentioned filter holding components, and the former bending strength is less; And the filter that on above-mentioned a plurality of filter holding components, forms respectively;
On the above-mentioned border that interconnects portion and above-mentioned filter holding components, make the bending of the above-mentioned portion of interconnecting, thereby make above-mentioned a plurality of filter holding components operation separated from one another; And
Above-mentioned a plurality of filter holding components are configured on the surface of above-mentioned channel unit, make the above-mentioned filter operation relative with above-mentioned inlet.
12. the manufacture method of ink gun according to claim 11,
In above-mentioned filter assemblies manufacturing process, the above-mentioned a plurality of filter holding components of disposed adjacent make distance between the parts of distance when being configured in it on above-mentioned channel unit surface between these a plurality of filter holding components in above-mentioned filter holding components arrangement step.
13. the manufacture method of ink gun according to claim 11,
In above-mentioned filter assemblies manufacturing process, by the above-mentioned filter of excimer laser processing formation.
14. the manufacture method of ink gun according to claim 11,
In above-mentioned filter assemblies manufacturing process, make above-mentioned filter holding components comprise plate that constitutes by metal and the plate that constitutes by resin, on the plate that constitutes by resin of above-mentioned filter holding components, form above-mentioned filter.
15. the manufacture method of ink gun according to claim 11,
Also have and will the executing agency of the volume-variation of above-mentioned balancing gate pit alternatively is configured on the surface of above-mentioned channel unit, the operation that itself and above-mentioned a plurality of filter holding components are not overlapped.
16. the manufacture method of ink gun according to claim 11,
In above-mentioned filter assemblies manufacturing process, make the above-mentioned portion that interconnects on the direction that connects above-mentioned filter holding components, form long elongated shape.
17. the manufacture method of ink gun according to claim 11,
In above-mentioned filter assemblies manufacturing process, make above-mentioned filter holding components and the above-mentioned portion that interconnects integrally formed.
18. the manufacture method of ink gun according to claim 11,
In above-mentioned filter assemblies manufacturing process, has following operation, that is:
Make filter assemblies, this filter assemblies is provided with: above-mentioned a plurality of filter holding components; The above-mentioned portion that interconnects; Above-mentioned filter; Frame section, surround above-mentioned a plurality of filter holding components around; And peripheral connecting portion, said frame portion and the above-mentioned filter holding components adjacent with said frame portion are coupled together, and the boundary of this periphery connecting portion and above-mentioned filter holding components is compared with above-mentioned filter holding components, the former bending strength is less, and
On the above-mentioned border that interconnects portion and above-mentioned filter holding components, make the bending of the above-mentioned portion of interconnecting, thereby make said frame portion separated from one another with the above-mentioned filter holding components that is connected with said frame portion.
19. the manufacture method of ink gun according to claim 18,
In above-mentioned filter assemblies manufacturing process, make above-mentioned filter holding components, above-mentioned portion, said frame portion and the above-mentioned peripheral connecting portion of interconnecting integrally formed.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002278766A JP3841036B2 (en) | 2002-09-25 | 2002-09-25 | Inkjet head |
| JP279108/2002 | 2002-09-25 | ||
| JP278766/2002 | 2002-09-25 | ||
| JP279006/2002 | 2002-09-25 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03159831.5A Division CN1269650C (en) | 2002-09-25 | 2003-09-25 | Ink-jet head, filter assembly and manufacturing method of ink-jet head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1799848A CN1799848A (en) | 2006-07-12 |
| CN100413689C true CN100413689C (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101369438A Expired - Fee Related CN100413689C (en) | 2002-09-25 | 2003-09-25 | Ink-jet head, filter assembly used for manufacturing the ink-jet head, and method for manufacturing the ink-jet head using the filter assembly |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3841036B2 (en) |
| CN (1) | CN100413689C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5248421B2 (en) * | 2009-06-22 | 2013-07-31 | ブラザー工業株式会社 | Liquid ejection device |
| JP5724186B2 (en) * | 2010-03-05 | 2015-05-27 | セイコーエプソン株式会社 | Filter, liquid ejecting head, liquid ejecting apparatus, and method of manufacturing filter |
| JP5410488B2 (en) * | 2011-09-27 | 2014-02-05 | 富士フイルム株式会社 | Inkjet head and inkjet recording apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08197736A (en) * | 1995-01-24 | 1996-08-06 | Canon Inc | Ink jet recording head and formation of ink supply device thereof |
| US20020085067A1 (en) * | 2000-12-29 | 2002-07-04 | Robert Palifka | Ink jet printing module |
| CN2705309Y (en) * | 2002-09-25 | 2005-06-22 | 兄弟工业株式会社 | Ink-jet head and filter assembly |
-
2002
- 2002-09-25 JP JP2002278766A patent/JP3841036B2/en not_active Expired - Fee Related
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2003
- 2003-09-25 CN CNB2005101369438A patent/CN100413689C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08197736A (en) * | 1995-01-24 | 1996-08-06 | Canon Inc | Ink jet recording head and formation of ink supply device thereof |
| US20020085067A1 (en) * | 2000-12-29 | 2002-07-04 | Robert Palifka | Ink jet printing module |
| CN2705309Y (en) * | 2002-09-25 | 2005-06-22 | 兄弟工业株式会社 | Ink-jet head and filter assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004114405A (en) | 2004-04-15 |
| CN1799848A (en) | 2006-07-12 |
| JP3841036B2 (en) | 2006-11-01 |
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