CN1442297A - Ink jet printer head and ink jet printer having ink jet printer head - Google Patents

Ink jet printer head and ink jet printer having ink jet printer head Download PDF

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Publication number
CN1442297A
CN1442297A CN 03106110 CN03106110A CN1442297A CN 1442297 A CN1442297 A CN 1442297A CN 03106110 CN03106110 CN 03106110 CN 03106110 A CN03106110 A CN 03106110A CN 1442297 A CN1442297 A CN 1442297A
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CN
China
Prior art keywords
mentioned
balancing gate
gate pit
ink jet
print head
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Granted
Application number
CN 03106110
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Chinese (zh)
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CN1280095C (en
Inventor
坂井田惇夫
广田淳
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Brother Industries Ltd
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Brother Industries Ltd
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Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of CN1442297A publication Critical patent/CN1442297A/en
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Publication of CN1280095C publication Critical patent/CN1280095C/en
Anticipated expiration legal-status Critical
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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
    • B41J2/14209—Structure of print heads with piezoelectric elements of finger type, chamber walls consisting integrally of piezoelectric material
    • 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
    • B41J2/14209—Structure of print heads with piezoelectric elements of finger type, chamber walls consisting integrally of piezoelectric material
    • B41J2002/14217—Multi layer finger type piezoelectric element
    • 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
    • B41J2/14209—Structure of print heads with piezoelectric elements of finger type, chamber walls consisting integrally of piezoelectric material
    • B41J2002/14225—Finger type piezoelectric element on only one side of the chamber
    • 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
    • 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
    • B41J2002/14459—Matrix arrangement of the pressure chambers
    • 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
    • B41J2002/14491—Electrical connection
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/11—Embodiments of or processes related to ink-jet heads characterised by specific geometrical characteristics
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/20—Modules

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

An ink-jet head has a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and the other end to be connected with an ink supply source. Each of the pressure chambers is confined in each of a plurality of parallelogram regions and has an elliptical planar shape with no corner bulging in a direction to leave a line joining the one end and the other end in each of the pressure chambers, in a plane of the passage unit where the pressure chambers are arranged. The planar shape of the pressure chamber is slender along a longer diagonal line of a rhombic region, and a direction of the longer diagonal line of a rhombic region and a direction of a direction joining the one end and the other end in each of the pressure chambers are substantially coincident with each other.

Description

Ink jet-print head and the ink-jet printer that ink jet-print head is arranged
Technical field
The present invention relates to ink jet-print head that prints to recording medium ejection ink and the ink-jet printer that this ink jet-print head is arranged.
Background technology
Among ink-jet printer, the ink that ink jet-print head provides ink container is distributed to a plurality of balancing gate pits.And adopt the performance element that constitutes by the chip type piezoelectric pottery, and the balancing gate pit is applied the pressure of pulse type selectively, make it to produce pressure wave, make from the nozzle that links to each other with each balancing gate pit with this to spray ink.Make this kind ink jet-print head high speed back and forth movement on the width of printing on one side, Yi Bian print.
About the configuration of the balancing gate pit in the ink jet-print head, dual mode is arranged generally: the one dimension configuration of arranging 1～2 row along the length direction of ink jet-print head, and along the surface matrix shape two-dimensional arrangement of ink jet-print head.For requirements such as the fine definitionization that realizes in recent years printing is proposed and high speeds, that balancing gate pit's two-dimensional arrangement is more effective.As the example of balancing gate pit along the ink jet-print head of surperficial two-dimensional arrangement, known have from the direction vertical with the inkjet printing head surface, and nozzle is configured in the example (with reference to the flat 10--508808 communique of special table) of the central authorities of balancing gate pit.In this case, as if the pressure that the balancing gate pit is applied pulse type, in the balancing gate pit, pressure wave is propagated towards the direction vertical with the inkjet printing head surface, from the direction vertical with the inkjet printing head surface, ink sprays from the nozzle that is configured in the centre, balancing gate pit.
But, under the situation of working pressure ripple ink-jet, two kinds of known method are arranged also.A kind of is what is called " extruding " method that the balancing gate pit is applied malleation, and another kind then is earlier the balancing gate pit to be applied negative pressure, and the regulation after negative pressure wave counter-rotating reflection applies malleation constantly, promptly so-called " taking out pressure " method.Extrusion is compared with taking out platen press, and generally speaking, the energy efficiency of taking out platen press is more better.And as shown in the above-mentioned conventional example, when pressure wave court in balancing gate pit direction vertical with the inkjet printing head surface propagated, if do not do printhead very greatly, pressure-wave propagation time span (AL length: Acoustic Length) can become extremely short.And under the quite short situation of AL length,,, thereby apply the negative pressure moment and time interval of applying between moment of malleation also can shorten because the time before returning after the pressure wave counter-rotating reflection shortens if want to carry out " taking out pressures ".Thereby produce the requirement of adopting the good high price drive circuit of responsiveness.The problem that energy efficiency is worsened in addition, if adopt " extruding " method for fear of this situation occurring, can appear again having to very big energy is put on the ink jet-print head.
Summary of the invention
The present invention's purpose is, the ink-jet printer that a kind of ink jet-print head is provided and this kind ink jet-print head is arranged when can realizing visual fine definitionization and print speed printing speed high speed, also can improve energy efficiency.
According to the 1st aspect of the present invention, can provide a kind of ink jet-print head.This ink jet-print head has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, and an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source; On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have towards the flat shape that departs from the acerous 2n dihedral (n: natural number, n 〉=3) that the line direction that connects an above-mentioned end and the other end bloats; In essence is consistent with an above-mentioned end in being connected above-mentioned balancing gate pit with the 2nd direction of the above-mentioned other end along the 1st direction of the long-diagonal in above-mentioned parallelogram zone.
According to the 2nd aspect of the present invention, can provide a kind of ink-jet printer.This machine includes the ink jet-print head that has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, this balancing gate pit an end be connected with nozzle, the other end is connected with the ink supply source; On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have that the line direction that connects an above-mentioned end and the other end bloats towards departing from, the flat shape of acerous 2n dihedral (n: natural number, n 〉=3); In essence is consistent with an above-mentioned end in being connected above-mentioned balancing gate pit with the 2nd direction of the above-mentioned other end along the 1st direction at the long diagonal angle in above-mentioned parallelogram zone.
According to the 3rd aspect of the present invention, can provide a kind of ink jet-print head.This ink jet-print head has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, and an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source; On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have the acerous oval-shaped flat shape that bloats towards the connecting line direction that departs from an above-mentioned end and the above-mentioned other end; In essence is consistent with an above-mentioned end in being connected above-mentioned balancing gate pit with the 2nd direction of the above-mentioned other end along the 1st direction of the long-diagonal of above-mentioned parallelogram.
According to the 4th aspect of the present invention, can provide a kind of ink-jet printer.This printer includes the ink jet-print head that has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, and an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source; On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have the acerous elliptic plane shape that bloats towards the connecting line direction that departs from an above-mentioned end and the above-mentioned other end; The 1st direction along above-mentioned parallelogram long-diagonal is consistent in essence with the 2nd direction of the other end with the end in being connected above-mentioned balancing gate pit.
As mentioned above, be expected to realize among the ink jet-print head and printer of visual high-definition and print speed printing speed high speed, since connect with the balancing gate pit in the end that connects of nozzle and the configuration plane of a plurality of balancing gate pits of configuration in the 2nd direction of the other end that is connected with the ink supply source and the channel unit parallel in essence, thereby the pressure wave that produces in the balancing gate pit has become in essence along the configuration of channel unit the plane propagation of a plurality of balancing gate pits.At pressure wave like this along the configuration of channel unit under the situation about propagating of the plane of a plurality of balancing gate pits, needn't increase the thickness of ink jet-print head, the length of AL is prolonged relatively.Because this way of employing has the generation of more well-to-do time and pressure wave and the moment of reflection adapts, thereby can adopt " taking out pressure " method (fill before fire), compare during with " extruding " method of employing, can improve its capacity usage ratio.
From below in conjunction with the description of the drawings, can make of the present invention other become more clear with further purpose characteristics and advantage.
Description of drawings
Fig. 1 is the sketch map of ink-jet printer that contains the ink jet-print head of one embodiment of the present invention.
Fig. 2 is the perspective view that adopts the ink jet-print head of one embodiment of the present invention.
Fig. 3 is the cutaway view along the II-II of Fig. 2.
Fig. 4 is the plane of the printhead body that comprises in the ink jet-print head described of Fig. 2.
Fig. 5 is the enlarged drawing in the zone that goes out with single-point line frame among Fig. 4.
Fig. 6 is the enlarged drawing in the zone that goes out with single-point line frame among Fig. 5.
Fig. 7 be among Fig. 6 along the III-III line, the phantom of the printhead body of describing among Fig. 4.
Fig. 8 is the enlarged drawing in the zone that goes out with the double dot dash line frame among Fig. 5.
Fig. 9 is the part decomposition diagram of the printhead body described of Fig. 4.
Figure 10 be from transverse observation to Fig. 7 among the amplification view in the zone that goes out with single-point line frame.
Figure 11 (a) is the figure of the 1st kind of variation in the flat shape of expression balancing gate pit.
Figure 11 (b) illustrates the balancing gate pit of being described among Figure 11 (a) to be configured to 3 * 3 rectangular state diagram.
Figure 12 (a) is the figure of the 2nd kind of variation in the flat shape of expression balancing gate pit.
Figure 12 (b) illustrates balancing gate pit that Figure 12 (a) described to be configured to 3 * 3 rectangular state diagram.
The specific embodiment
Fig. 1 is the sketch map of ink-jet printer that contains the ink jet-print head of one embodiment of the present invention.Ink-jet printer 101 shown in Figure 1 is the color inkjet printers that have 4 ink jet-print heads.Among this printer 101, the left side among the figure is a paper feed part 111, and the right side is row's paper portion 112 among the figure.
In the inside of printer 101, formed the paper transport path that transmits printing by paper feed part 111 to row's paper portion 112.In downstream one side, disposed to seize on both sides by the arms and transmitted a pair of feeding-in roll 105a, the 105b of picture record medium with paper near paper feed part 111.By this a pair of feeding-in roll 105a, 105b, the left of paper from figure is sent to right-hand.In the middle part of paper transport path, disposed two belt pulleys 106,107 and be wound on two endless belt conveyers 108 between the wheel 106,107.The outer surface of conveyer belt 108, transmission plane just, carried out the silicone resin processing, so promptly can utilize its adhesion strength, the paper that is sent by a pair of feeding-in roll 105a, 105b is remained on the transmission plane of conveyer belt 108, can utilize the driving (direction of arrow 104) that turns clockwise among the figure of belt pulley 106 of a side again, direction (right side) transmits towards downstream.
Insert at paper on the position of belt pulley 106, and from 106 positions of discharging, disposed respectively and pressed town parts 109a and 109b.Press town parts 109a, 109b to be used for paper, make it not break away from the parts of the transmission plane of conveyer belt 108, make it to adhere on the transmission plane conscientiously by the transmission plane that is pressed in conveyer belt 108.
Along paper transport path, downstream one side near conveyer belt 108 has disposed mechanism for stripping 110.The paper that mechanism for stripping 110 will stick on the transmission plane of conveyer belt 108 is peeled off from transmission plane, and transmits towards row's paper portion 112 on right side.
The lower end of 4 ink jet-print heads 1 is its printhead body 1a, (as aftermentioned, the performance element of exerting pressure by the channel unit that forms the ink flow path that contains the balancing gate pit with to the ink in the balancing gate pit is tightly fitted each other and formed).Printhead body 1a all has rectangular section separately, presses close to configuration each other, so that make its length direction become the direction vertical with the direction of transfer of paper (among Fig. 1 direction) vertical with paper.That is to say that this printer 101 is line printers.Each bottom surface of 4 printhead body 1a and the face-off of the transfer path of paper are provided with the very little ink squit hole of a plurality of diameters in this bottom surface.4 printhead body 1a spray magenta, Huang, indigo plant, black 4 kinds of inks respectively.
Printhead body 1a is configured to: leave a spot of space between the transmission plane of its lower surface and conveyer belt 108, this space is used for forming the transfer path of paper.Adopt this formation, the paper that can transmit on conveyer belt 108 is successively by near the moment below 4 printhead body 1a, from nozzle,, just eject versicolor ink on the printing surface, can on paper, form desirable chromatic image like this towards the upper surface of this paper.
Ink-jet printer 101 has and is used for the automatic attending device 117 that ink jet-print head 1 is safeguarded, is provided with 4 guard shields 116 that are used to cover 4 printhead body 1a lower surfaces among this attending device 117, and not shown purification mechanism etc.
Attending device 117 during ink-jet printer 101 prints, be in paper feed part 111 under position (withdrawing from the position).And after printing finishes, when having satisfied defined terms, (state that does not print has surpassed official hour, and the power supply of printer 101 is when being closed), then move to 4 printhead body 1a under the position on, in this position (guard positions), cover the lower surface of printhead body 1a respectively with guard shield 116, prevent the ink dried of the nozzle segment of printhead body 1a.
Belt pulley 106,107 and conveyer belt 108 support by base 113.Base 113 is loaded on the configuration cylinder part 115 thereunder.Cylinder part 115 can be that the center is rotated to be installed in the axle 114 that departs from the center.Therefore, be accompanied by the rotation of axle 114, the upper end height one of cylinder part 115 changes, and base 113 is lifting thereupon also.When making attending device 117 from withdrawing from the position when guard positions moves, be necessary to make in advance the suitable angle of cylinder part 115 rotations, thereby make base 113, conveyer belt 108 and belt pulley 106,107, suitable decline certain distance from the position shown in Figure 1 guarantees the mobile space of attending device 117.
Be with in 108 area surrounded being transmitted, be provided with approximate rectangular shape (width is basic identical with conveyer belt 108) guide 121 by with the opposed locations of ink jet-print head 1 on, just the lower surface of the conveyer belt 108 of upside contacts and from interior all sides it is supported.
Be described in further detail the structure of the ink jet-print head 1 of present embodiment below.Fig. 2 is the perspective view of ink jet-print head 1.Fig. 3 is the cutaway view along the II-II line of Fig. 2.Just as shown in Figures 2 and 3, the ink jet-print head 1 of present embodiment has the printhead body 1a of the rectangular planar shape of extending towards a direction (main scanning direction) and is used for the base portion 131 of print head support main body 1a.Base portion 131 except that print head support main body 1a, also is used for supporting providing driver IC 132 and the substrate 133 that drives signal for individual electrode 35a, 35b (with reference to Fig. 6 and Figure 10) etc.
As shown in Figure 2, base portion 131 is made of following each several part: by with the local engagement of the upper surface of printhead body 1a, the matrix 138 of print head support main body 1a; By with the engaging of the upper surface of matrix 138, support the support 139 of matrix 138.Matrix 138 is parts of substantially being square identical substantially with the length of the length direction of printhead body 1a.The matrix 138 that is made of the metal material of stainless steel and so on has the function as the lightweight structure spare of reinforced support 139.Support 139 constitutes to the pair of brackets supporter 142 with the extension of printhead body 1a rightabout by the rack body 141 that is configured in printhead body 1a side with from rack body 141.Pair of brackets supporter 142 is plate-shaped part, and along the length direction of rack body 141, apart certain interval is arranged in parallel.
At the two ends of the sub scanning direction (direction vertical) of rack body 141, be provided with a pair of telescopic parts 141a outstanding towards the below with main scanning direction.At this,, thereby,, form the groove 141b that is the square shape basically because of this a pair of telescopic parts 141a at the lower surface of rack body 141 because this a pair of telescopic parts 141a is formed at the whole length direction of entire bracket main body 141.In this slot part 141b, accommodating matrix 138.The lower surface of the slot part 141b of the upper surface of matrix 138 and rack body 141, bonding with bonding agent and so on.Because the thickness of matrix 138 is more bigger than the degree of depth of the slot part 141b of rack body 141, thereby protrude towards the below from telescopic parts 141a the lower end of matrix 138.
In the inside of matrix 138,, form the space that is square substantially (the hollow area)-inkwell 3 that extends towards its length direction as the stream of ink being provided for printhead body 1a.On the lower surface 145 of matrix 138, form the opening 3b (with reference to Fig. 4) that is communicated with inkwell 3.Inkwell 3 is then by in not shown service and the printer host, and the not shown main ink container (providing ink source) that goes out links to each other.Therefore, can be in inkwell 3 by suitably replenishing ink from main ink container.
The lower surface 145 of matrix 138 near opening 3b, and is compared on every side, also will give prominence to downwards.And matrix 138 only at the opening 3b 145a place nearby of lower surface 145, contacts with the channel unit 4 (with reference to Fig. 3) of printhead body 1a.Therefore, the opening 3b of the lower surface 145 of matrix 138 nearby 145a zone in addition then isolates with printhead body 1a, at this isolated part, has disposed performance element 21.
On the lateral surface of the bracket leg gripping member 142 of support 139, be intermediary with the elastomeric material 137 of hardhead sponge and so on, fixing driver IC 132.On the lateral surface of driver IC 132, fin 134 is closely cooperating.Fin 134 is the parts that are square substantially, and the heat that driver IC 132 is produced is effectively dispersed.Among driver IC 132, connecting feeding pack flexible distributing board (FPC:Flexible Prnted Circuit) 136.The FPC136 that is connected with driver IC 132 realizes being electrically connected with substrate 133 and printhead body 1a by the refined lead welding.At the upside of driver IC 132 and fin 134, the outside placement substrate 133 of FPC136.Between the upper surface of fin 134 and the substrate 133, and between the lower surface and FPC136 of fin 134, use seal member 149 bonding respectively.
Between the upper surface of the lower surface of the telescopic parts 141a of rack body 141 and channel unit 4, disposed the seal member 150 of seizing FPC136 on both sides by the arms.That is to say that for channel unit 4 and rack body 141, FPC136 is fixing by seal member 150.So both can prevent the prying of the length direction of printhead body 1a, can prevent stress application again, can also fixedly secure FPC136 the junction of performance element 21 and FPC136.
As shown in Figure 2, near the following side corner sections of the main scanning direction of ink jet-print head 1,, 6 prodger 30a have been disposed at interval fifty-fifty along the sidewall of ink jet-print head 1.These sheet shaped pieces are provided in a side of the part at two ends of the sub scanning direction of the undermost nozzle plate 30 of printhead body 1a (with reference to Fig. 7).That is to say nozzle plate 30 portion boundary line beyond prodger 30a and its, crooked about 90 degree.Prodger 30a be arranged on printer 101 in the corresponding position, two ends of paper of all size that is used to print.Because the sweep of nozzle base sheet 30 is not the right angle, but circular arc slightly, so printhead 1 just is not prone to because of blocking with paper that contacting of printhead 1 side produces with top of form in front of being sent to, just paperboard.
Fig. 4 is the mode view of printhead body 1a.Among Fig. 4, the inkwell 3 usefulness imagination dotted lines that form within matrix 138 indicate.As shown in Figure 4, printhead body 1a has the rectangular planar shape of extending towards a direction (main scanning direction).Printhead body 1a has that the back will introduce, the channel unit 4 that is formed by the inkjet mouth 8 (in the lump with reference to Fig. 5, Fig. 6, Fig. 7) of a plurality of balancing gate pits 10 and spray nozzle front end, surface thereon, then bonding staggered two row a plurality of trapezoidal performance elements 21.Each performance element 21, the length direction configuration of its parallel opposite side (top is with following) unit, longshore current road 4.And each hypotenuse of adjacent performance element 21 then overlaps on the width of channel unit 4.
With the lower surface of the corresponding channel unit 4 in the bonding land of performance element 21, form the ink-jet district.A plurality of inkjet mouths 8 as described later, are rectangularly being arranged in surface in the ink-jet district.In addition, within the matrix 138 that is configured in above the channel unit 4, form inkwell 3 along its length direction.Inkwell 3 is communicated with ink container (not shown) by the opening 3a that is located at the one end, wherein is full of ink always.Among inkwell 3, along its bearing of trend, per two formations of opening 3b are a pair of, and do not establish the regional corresponding of performance element 21, are crisscross arranged.
Fig. 5 is Fig. 4 goes out the district with single-point line frame a enlarged drawing.As Fig. 4 and shown in Figure 5, inkwell 3 is communicated with manifold 5 (manifoldchannd) in the channel unit 4 that is in its lower floor by opening 3b.Opening 3b is provided with the filter (not shown) that is used to catch dust that China ink contains etc.The head of manifold 5 is divided into two, constitutes secondary manifold 5a.In the bottom of a performance element 21, for this performance element 21, two opening 3b from the both sides of the length direction that is in ink jet-print head 1 put in two secondary manifold 5a respectively.That is to say,, add up to have 4 secondary manifold 5a, towards the length direction extension of ink jet-print head 1 in the bottom of a performance element 21.Be full of the ink that provides by inkwell among each secondary manifold 5a.
Fig. 6 is the enlarged drawing that the single-point line frame among Fig. 5 goes out the zone.Fig. 5 and Fig. 6 illustrate from vertical angle observed, and a plurality of balancing gate pits 10 in the channel unit 4 are the plane of rectangular configuration.The balancing gate pit 10 of the component parts of channel unit 4, aperture 12, nozzle 8, secondary manifold etc. are as aftermentioned, and on the drawing with Fig. 5 and Fig. 6 became vertical direction, (with reference to Fig. 7) gone up in configuration at various height respectively.
As shown in Figure 6, a plurality of rhomboid 10x (among the figure with single-point line indicate), the 1st orientation and the 2nd orientation both direction shown in the arrow do not overlap mutually in the figure, and total each border district is rectangular disposed adjacent.These the 1st orientations and the 2nd orientation are parallel to the face in trapezoidal ink-jet zone shown in Figure 5, the length direction of the 1st orientation and channel unit 4, and the 2nd orientation is consistent with a hypotenuse direction along rhomboid 10x.Balancing gate pit 10 has also little more some than rhomboid 10x, belongs to oval flat shape in essence, is housed in separately among the 10x of this zone separately.
The back also will be introduced in detail, and each balancing gate pit's 10, one end is connected with nozzle, and the other end is connected with secondary manifold 5a.An end that is connected with nozzle in each balancing gate pit 10 and the other end that is connected with secondary manifold 5a, the two ends on the long-diagonal of diamond-shaped area 10x form respectively.That is to say, as shown in Figure 6, along the direction (diagonal: of the long-diagonal of rhomboid 10x the 1st direction) with the direction (direction of both ends: the 2nd direction) consistent of an end that is connected balancing gate pit 10 with the other end.Therefore, when having applied pressure by 21 pairs of balancing gate pits of performance element, among the pressure wave that in balancing gate pit 10, produces, can with the closure of the end in balancing gate pit 10 and the other end (direction of both ends: the 2nd direction) pressure wave of Chuan Boing, utilize as the pressure wave that helps ink-jet.
Be used under the direction of propagation and the vertical situation in surface of pressure wave (following is referred to as pressure wave) of ink-jet, generally all the flat shape of balancing gate pit 10 be set at circle and regular polygon etc., with the shape of central point.Yet shown in present embodiment, when the pressure-wave propagation direction is under the situation on the plane of channel unit 4, because pressure-wave propagation time span (AL length) prolonged, thereby preferably the flat shape of balancing gate pit 10 is set at the direction (direction of both ends: elongated shape the 2nd direction) that along the pressure-wave propagation direction, promptly connects an above-mentioned end and the other end.For this kind reason, the flat shape of balancing gate pit 10 shown in Figure 6 promptly becomes the length oblong longer than the length of the direction that meets at right angles with it of above-mentioned direction of both ends (the 2nd direction).
In addition, as shown in Figure 6, the 1st orientation of the rectangular configuration of balancing gate pit 10 and the 2nd orientation each other and out of plumb but constitute acute angle theta.So just can dwindle inkjet mouth 8 interval to each other of the scanning direction of ink jet-print head 1, thereby can realize forming the image of fine definition by the printing process of introducing later.
Also mark when overlooking and balancing gate pit 10 among Fig. 6 and overlap, have individual electrode 35a, 35b that a little circle youngster's flat shape is also wanted in specific pressure chamber 10.
Fig. 7 is the partial sectional view of printhead body 1a shown in Figure 4.Each inkjet mouth 8 also can be found out from Fig. 7, is formed at the tip of the nozzle of syringe needle shape.In addition, between balancing gate pit 10 and secondary manifold 5a, aperture 12 is the same with balancing gate pit 10, towards the direction extension parallel in essence with the surface of channel unit 4.This aperture 12 has specially been paid suitable flow path resistance, is used for the flow of limit ink, so that make ink-jet more stable.Each inkjet mouth 8, by balancing gate pit 10 (long: 900 μ m, wide: 350 μ m) and aperture 12 be communicated with secondary manifold 5a.So, just among ink jet-print head 1, formed, arrived the ink flow path 32 of inkjet mouth 8 through inkwell 3, manifold 5, secondary manifold 5a, aperture 12 and balancing gate pit 10 from ink container.
From the angle vertical with the drawing of Fig. 6, the aperture 12 that is communicated with a balancing gate pit is configured to the balancing gate pit adjacent with this balancing gate pit 10 and overlaps.Make it to become a possible reason and be, aperture 12 is opened on direction vertical for paper, be located at the specific pressure chamber and also will make balancing gate pit 10 be in different height near secondary manifold 5a one side with aperture 12.That is to say, also can find out that balancing gate pit 10, aperture 12 and secondary manifold 5a are formed by stacked sheet material respectively from Fig. 7, from the surperficial vertical direction of channel unit 4, be configured to have each other overlapping.
Among Fig. 5 and Fig. 6, be more readily understood in order to make accompanying drawing, balancing gate pit 10 that should with dashed lines below performance element 21 indicates and aperture 12 etc. change into solid line and indicating.
Balancing gate pit 10 is arranged in the length direction (the 1st orientation) of ink jet-print head 1 and slightly is partial in the ink-jet zone on the both direction of width (the 2nd orientation) of ink jet-print head 1 among the plane that Fig. 5 and Fig. 6 indicate.The 1st orientation and the smaller angle θ in the 2nd orientation constituent ratio right angle, inkjet mouth 8 is arranged with 50dpi in the 1st orientation.In addition, balancing gate pit 10 is in the 2nd orientation, and the mode that is comprising 12 in the ink-jet zone with performance element 21 correspondences is arranged.So, just become in the whole width range of ink jet-print head 1, in the scope of the distance of 8 of two only at interval adjacent with the 1st orientation inkjet mouths, exist the situation of 12 inkjet mouths 8.And at two ends (hypotenuse that is equivalent to performance element 21) along the 1st orientation in each ink-jet district, owing to constitute complementary relationship with another performance element 21 pairing ink-jet districts that the width of ink jet-print head 1 stands facing each other mutually, thereby satisfied above-mentioned condition, therefore, among the ink jet-print head 1 that adopts present embodiment, along with printing relatively moving towards the width of ink jet-print head 1, make it to spray ink droplet successively a plurality of inkjet mouths 8 on being arranged in the 1st and the 2nd orientation, can on main scanning direction, print with 600dpi.
Below with reference to Fig. 8, introduce the structure of channel unit 4 in more detail.As shown in Figure 8, balancing gate pit 10, with the interval-50dpi of regulation, the row shape is arranged in the 1st orientation.The row of this balancing gate pit 10 in the 2nd orientation, are arranged 12 row, generally speaking, balancing gate pit 10 with a performance element 21 pairing ink-jet zones in, two-dimensional arrangements.
Balancing gate pit 10 has two kinds, and a kind of is the 10a of balancing gate pit that nozzle is connected the acute angle district of Fig. 8 middle and upper part, and another kind is the 10b of balancing gate pit that nozzle is connected downside acute angle district.A plurality of 10a of balancing gate pit and a plurality of 10b of balancing gate pit are arranged in the 1st orientation jointly, constitute the row 11a of balancing gate pit, 11b respectively.As shown in Figure 8, within the ink-jet zone corresponding with a performance element 21, the below begins from Fig. 8, is being arranged in order the 2 row row 11a of balancing gate pit, and upside is adjacent with it, is arranging the 2 row row 11b of balancing gate pit.Weave into a group by the 4 row balancing gate pit row that above-mentioned 2 row row 11a of balancing gate pit and the 2 row row 11b of balancing gate pit form.This balancing gate pit group with a performance element 21 corresponding ink-jet zones in arrangement, from the common triplicate of downside.The straight line that connects the upside acute angle of each balancing gate pit among the row 11a of each balancing gate pit, the 11b, the downside hypotenuse of each balancing gate pit from the upside balancing gate pit row adjacent with this balancing gate pit intersects together.
As mentioned above, from the angle vertical with the paper of Fig. 8, by the allocation position that will be connected the nozzle in the balancing gate pit 10 different the 1st row 11a of balancing gate pit and the per two row disposed adjacent of the 2nd row 11b of balancing gate pit, on the whole, the arrangement of balancing gate pit 10 in good order.In addition, nozzle is among balancing gate pit's group of one group in that balancing gate pits row of these 4 row are compiled, and promptly becomes the arrangement of concentrating to the center.So, as mentioned above, it is one group that 4 row balancing gate pit row are compiled, under the situation of downside triplicate configuration balancing gate pit group, boundary vicinity zone between balancing gate pit's group and group just planting the combination both sides that 4 row balancing gate pit row constitute thus, has formed the zone that does not have nozzle.And be provided with the extension of the big secondary manifold 5a of the width that is used for providing ink herein to each balancing gate pit 10.Among present embodiment, with a performance element 21 corresponding ink-jet zones in, downside among the figure has one, there is one between balancing gate pit's group bottom and second balancing gate pit's group, the both sides of balancing gate pit's group topmost have two, have 4 big secondary manifold 5a of width to extend setting altogether in the 1st orientation.
As shown in Figure 8, corresponding with balancing gate pit 10 in the 1st orientation with the nozzle that is communicated with of inkjet mouth 8 of ejection ink in this side up proper alignment, with the equal intervals arrangement of 50dpi.In addition, with the 1st orientation, also arranging 12 balancing gate pits in the 2nd orientation with angle θ intersection, but be not proper alignment, with these 12 balancing gate pits, 10 corresponding 12 nozzles, as mentioned above, the branch that is communicated with the acute angle district of downside with the acute angle district connected sum of the upside of balancing gate pit 10 is arranged equally, but be not in the 2nd orientation with certain interval proper alignment.
In addition, be generally under the situation about being communicated with the acute angle district of the same side of balancing gate pit 10 at nozzle, nozzle also can be in the 2nd orientation proper alignment at regular intervals.That is to say that in the case, nozzle arrangement is in the drawings on down, every rising is once the interval of the row resolution-600dpi of balancing gate pit when the 1st orientation top offset is equivalent to print.In contrast, among present embodiment, because after 2 row row 11a of balancing gate pit and the 2 row row 11b of balancing gate pit combinations, 4 row balancing gate pit row are weaved into one group, from bottom to top triplicate configuration, thereby among the figure from bottom to top, the displacement of nozzle location the 1st orientation of every rising one row balancing gate pit row is also incomplete same.
Among the ink jet-print head 1 of present embodiment, in the 1st orientation, the width (about 508.0 μ m) that is equivalent to 50dpi is arranged, can the belt-like zone R that extend towards the direction vertical with the 1st orientation be taken in.Among this belt-like zone R, no matter, only have a nozzle for any row in balancing gate pit's row of 12 row.That is to say, with the optional position in a performance element 21 corresponding ink-jet zones on, divide under the situation of this belt-like zone R, within this belt-like zone R, 12 nozzles are usually distributing.And with the position that in these 12 nozzles each projects to the point on the straight line that the 1st orientation is extended all be separated by each other when being equivalent to print resolution-600dpi at interval.
When the position that 12 nozzles that belong to a belt-like zone R is projected on the straight line that extends towards the 1st orientation, from the left side, when successively these 12 nozzles being numbered (1)～(12), these 12 nozzles are arranged according to the order of (1), (7), (2), (8), (5), (11), (6), (12), (9), (3), (10) from following.
Among the ink jet-print head 1 of the present embodiment that adopts this formation,, can depict the literal and the image of resolution with 600dpi as if the active layer that suitably drives in the performance element 21.That is to say, will match with the transmission of print media, optionally drive successively corresponding to the active layer of the balancing gate pits row of 12 row, can be on print media with specific literal and image printing.
Illustrate the situation of the resolution printing of usefulness 600dpi towards the straight line of the 1st orientation extension.At first, briefly explain the situation that nozzle is communicated with the acute angle of the same side of balancing gate pit 10.In this case, corresponding with the transmission of print media, from being arranged in the nozzle beginning ink-jet of balancing gate pit's row bottom, selection belongs to the nozzle that the balancing gate pit adjacent with upside is listed as successively, the ejection ink among Fig. 8.So, towards the 1st orientation, on one side adjacent with the interval of 600dpi, form ink dot on one side.Finally can depict the straight line that extends towards the 1st orientation with the resolution of 600dpi.
In addition, in the present embodiment,, be accompanied by the transmission of print media, select the nozzle that is communicated with the balancing gate pit that is close to upside, ink-jet successively from being arranged in the nozzle beginning ink-jet of Fig. 8 row 11a of balancing gate pit bottom.At this moment, because from down to up, the position of the nozzle of balancing gate pit's row of every rising is to the displacement of the 1st orientation and incomplete same, thereby along with the transmission of print media, the ink dot that forms successively along the 1st orientation be not 600dpi uniformly-spaced.
That is to say, corresponding with the transmission of print media as shown in Figure 8, from nozzle (1) ink-jet that is communicated with the nethermost 11a of balancing gate pit the figure, on print media,, form point range with the interval (about 508.0 μ m) that is equivalent to 50dpi.Thereafter, along with the transmission of print media, the formation position one of straight line arrives from following calculating, the position of the nozzle (7) that is communicated with the 2nd the row 11a of balancing gate pit, i.e. ejection ink from this nozzle (7).So, promptly the dot positions that forms from the beginning the time is displaced on the position of 6 times the 1st orientation at the interval (about 42.3 μ m) that is equivalent to 600dpi (the about 254.0 μ m of about 42.3 μ m * 6=), forms the 2nd ink dot.
Then, along with the transmission of print media, the formation position of straight line one arrives the position of the nozzle (2) that is connected with the 3rd the row 11b of balancing gate pit from following calculating, and nozzle 2 is ink-jet.The dot positions that can form from the beginning the time is displaced on the position of the 1st orientation at the interval (about 42.3 μ m) that is equivalent to 600dpi like this, forms the 3rd ink dot.Then, along with the transmission of lettering medium, the formation position one of straight line arrives from following calculating, the position of the nozzle (8) that is communicated with the 4th the row 11b of balancing gate pit, and nozzle (8) is ink-jet.The dot positions that can form from the beginning the time is displaced on the position (the about 296.3 μ m of about 42.3 μ m * 7=) of 7 times the 1st orientation at the interval (about 42.3 μ m) that is equivalent to 600dpi like this, forms the 4th ink dot.Then, along with the transmission of print media, the formation position one of straight line arrives from following calculating, the position of the nozzle (5) that is communicated with the 5th the row 11a of balancing gate pit, and nozzle 5 is ink-jet.Can at the some position displacement that forms from the beginning to the position (the about 169.3 μ m of about 42.3 μ m * 4=) of 4 times the 1st orientation of the interval that is equivalent to 600dpi (about 42.3 μ m), form the 5th ink dot like this.
Below too, successively from figure from bottom to top, on one side select the nozzle be communicated with balancing gate pit 10, one side forms ink dot.At this moment, be set at N, can form ink dot in position from the some Bit Shift that begins to form to the 1st orientation that is equivalent to (multiplying power n=N-1) * (interval that is equivalent to 600dpi) if nozzle shown in Figure 8 numbered.To the end, when having selected 12 nozzles, with the nozzle (1) among the nethermost row 11a of balancing gate pit among the distance figure, be equivalent between the ink dot that the interval (about 42.3 μ m) of 50dpi forms, linked together by 12 ink dots that form every the interval that is equivalent to 600dpi (about 42.3 μ m), can depict one is the resolution of 600dpi with integral body, towards the straight line of the 1st orientation extension.
Fig. 9 is the exploded view of the printhead body 1a that describes of Fig. 4.Shown in Fig. 7 and Fig. 9, the vitals of bottom one side of ink jet-print head 1 has the laminated construction that is laminated by following 10 sheet materials from top to bottom: performance element 21, cavity plate 22, base plate 23, aperture plate 24, feed plate 25, manifold plate 26,27,28, cover plate 29 and nozzle plate 30.Wherein, 9 plates of other except that performance element 21 constitute channel unit 4.
Hereinafter also to introduce in detail, performance element 21 is laminated by 5 piezoelectric boards, and by configured electrodes, wherein 3 layers are set at the part that becomes active layer when having additional electric field (below abbreviate " layer that contains active layer " as), and all the other 2 layers is non-active layer.Cavity plate 22 is a kind of corresponding with balancing gate pit 10, assumes diamond in shape substantially, is provided with the metallic plate of a plurality of openings.Base plate 23 is balancing gate pits 10 with regard to cavity plate 22, is provided with the contact hole between balancing gate pit 10 and the perforate 12 respectively, and from the balancing gate pit 10 metallic plates to the contact hole of inkjet mouth 8.Aperture plate 24 is balancing gate pits 10 with regard to cavity plate 22, is respectively equipped with from the balancing gate pit 10 metallic plates to the contact hole of inkjet mouth 8 except perforate 12.Feed plate 25 is balancing gate pits 10 with regard to cavity plate 22, is provided with the contact hole of perforate 12 and secondary manifold 5a respectively and 10 metallic plates to the contact hole of inkjet mouth 8 from the balancing gate pit.Manifold plate the 26,27, the 28th on the basis of secondary manifold 5a, with regard to a balancing gate pit 10 of cavity plate 22, is provided with the metallic plate in the contact hole from the balancing gate pit to the inkjet mouth respectively.Cover plate 29 is balancing gate pits 10 with regard to cavity plate 22, is provided with the metallic plate of balancing gate pit 10 to the contact hole of inkjet mouth respectively.Nozzle plate 30 is balancing gate pits 10 with regard to cavity plate 22, be provided with respectively have nozzle function the metallic plate of syringe needle shape inkjet mouth 8.
These 10 plates 21～30, in order to form ink flow path shown in Figure 7 32, stacked after the position aligned with each other.This ink flow path 32 flows out from secondary manifold 5a, at first up, at perforate 12 horizontal-extendings, and then further upwards, among balancing gate pit 10, horizontal-extending once more.Temporary transient then vertical downwards heavy after flowing in oblique below towards departing from perforate 12 directions, flow to inkjet mouth 8.
Introduced with regard to the structure of performance element 21 below.Figure 10 be from transverse observation to Fig. 7 go out the amplification view in zone with single-point line frame.As shown in Figure 10, performance element 21 includes by thickness separately and is 5 piezoelectric boards 41,42,43,44,45 that form about 15 μ m.These piezoelectric boards 41～45 in order to cross over a plurality of balancing gate pits 10 configurations that form in the ink-jet zone in ink jet-print head 1, are made of continuous stratiform flat board (flat layer continuously).Because piezoelectric board 41～45 is crossed over the configuration of a plurality of balancing gate pits as continuous flat layer, thereby can be by adopting screen printing technology, arranged in high density individual electrode 35a, 35b.Therefore also can arranged in high density with the corresponding position of individual electrode 35a, 35b on the balancing gate pit 10 that forms, thereby the high-definition image printing is become a reality.Among present embodiment, piezoelectric board 41～45 is made of the ceramic material of the lead zirconate titanate with forceful electric power Jie property (PZT) series.
Be in the common electrode 34a that to clip a thickness between the piezoelectric board 41 of performance element 21 the superiors and the thereunder adjacent piezoelectric board 42 be 2 μ m.Common electrode 34a is a conducting film that almost may extend into All Ranges in the performance element 21.Equally, exist identically with common electrode 34a shape between the piezoelectric board 42 and 43, between 43 and 44 too, thickness is the common electrode 34b. about 2 μ m
Common electrode 34a, 34b, in order to make projected area comprise the zone, balancing gate pit for stacked direction, also can form a plurality of specific pressures chamber and also want big electrode in each balancing gate pit 10, perhaps in order to make projected area comprise the zone, balancing gate pit, also can be 10 form the smaller electrode in a plurality of specific pressures chamber 10, not necessarily will on whole, form a slice conducting film in each balancing gate pit.But, in the time of this, common electrode is connected to each other, so that make the part corresponding all keep same current potential with balancing gate pit 10.
As shown in Figure 10, having formed thickness on the corresponding position in the upper surface of piezoelectric board 41 and balancing gate pit 10 is individual electrode 35a about 1 μ m.Its flat shape of individual electrode 35a is roughly ellipse, has that similar substantially to balancing gate pit 10 (long: 850 μ m, wide: shape 250 μ m) is included in to the view field of stacked direction among the zone of balancing gate pit 10 (with reference to Fig. 6).Between piezoelectric board 42 and piezoelectric board 43, with the corresponding position of individual electrode 35a on, clip the thickness that has with the same shape of individual electrode 35a and be the individual electrode 35b about 2 μ m.Piezoelectric board 44 and and below between the adjacent piezoelectric board 45 and below piezoelectric board 45, configured electrodes not.Each electrode 34a, 34b, 35a, 35b are made of the metal material of Ag-Pd and so on.
Common electrode 34a, 34b are not shown regional ground connection.So, common electrode 34a, 34b just can keep same earthing potential in the zone corresponding with whole balancing gate pit 10. Individual electrode 35a, 35b in addition, in order to control the current potential corresponding with each balancing gate pit 10, each individual electrode 35a, 35b are connected with driver IC 132 (with reference to Fig. 2 and Fig. 3) by containing the FPC136 of another independent lead.At this moment, also can make to constitute same lead of a pair of individual electrode 35a, 35b use up and down, be connected with driver IC 132.
Among the ink jet-print head 1 that adopts present embodiment, piezoelectric board 41～43 is polarized at its thickness direction.Therefore, if individual electrode 35a, 35b are placed the current potential different with common electrode 34a, 34b, to piezoelectric board 41～43, power up towards its polarised direction, the part that then is applied in electric field in the piezoelectric board 41～43 has the effect of active layer, towards its thickness direction, stacked direction elongation just or contraction, rely on its piezoelectricity transversal effect, towards the direction vertical with stacked direction, just surface direction is shunk or elongation.All the other two 44,45 in addition, because its zone of not seized on both sides by the arms by individual electrode 35a, 35b and common electrode 34a, 34b is non-active layer, thereby can not spontaneously changes shape.That is to say, performance element 21 is set at top (promptly having left balancing gate pit 10) three piezoelectric boards 41～43 on the layer that contains active layer, and near following (be balancing gate pit 10) two piezoelectric boards 44,45 are set at non-active layer, adopted the formation of so-called single surface based fashion.
Therefore, if make electric field identical with the direction of polarization, control driver IC 132, make individual electrode 35a, 35b, with respect to common electrode 34a, 34b, be in the plus or minus current potential of regulation, the active layer of being seized on both sides by the arms by the individual electrode 35a of piezoelectric board 41～43,35b and common electrode 34a, 34b shrinks in surface direction, on the other hand, the spontaneous contraction then do not taken place on the piezoelectric board 44,45.At this moment, as shown in Figure 10, because piezoelectric board 41～45 lower surfaces are fixed on the upper surface in the next door of the division balancing gate pit 10 that is formed by cavity plate 22, utilization is based on the contraction of the surface direction of piezoelectricity transversal effect, can make piezoelectric board 41～45 change shape (single areal deformation), 10 1 sides bloat towards the balancing gate pit.So, because the volume of balancing gate pit 10 descends, the pressure of ink is risen, can among inkjet mouth 8, spray ink.After this, if the current potential of individual electrode 35a, 35b recovers,, can suck ink from manifold 5 one sides then because piezoelectric board 41～45 becomes writing board shape, and the volume of balancing gate pit 10 returns to previous level.
And as another driving method, can also adopt following method: in order to make piezoelectric board 41～45 distortion, one side bloats towards the balancing gate pit, can be set at the current potential different to individual electrode 35a, 35b in advance with shared 34a, 34b, when the ink-jet requirement is arranged, temporarily make individual electrode 35a, 35b and common electrode 34a, 34b be in same current potential, again the current potential of individual electrode 35a, 35b is reverted to the current potential different with common electrode 34a, 34b in the moment of regulation thereafter.In this case, be in the moment of same current potential at individual electrode 35a, 35b and common electrode 34a, 34b, piezoelectric board 41-45 has recovered original shape, the volume of balancing gate pit 10 is compared with original state (states that the current potential of two electrodes is different) to some extent to be increased, thereby can be from manifold one side within the ink suction pressure chamber 10.Thereafter, make individual electrode 35a, 35b be in the moment of the current potential different with common electrode 34a, 34b once more, piezoelectric board 41-45 deforms, and 10 1 sides bloat towards the balancing gate pit, because the volume in the balancing gate pit descends, the pressure rising to China ink can spray ink.
If the direction of an electric field that is attached on the piezoelectric board 41-43 is opposite with its minute extreme direction, then the active layer among the piezoelectric board 41-43 that seizes on both sides by the arms of individual electrode 35a, 35b and common electrode 34a, 34b will to the rectangular direction prolongation of minute extreme direction.Thereby piezoelectric board 41-45, be out of shape according to the piezoelectricity transversal effect, 10 form depression in the balancing gate pit.Therefore, the volume in the balancing gate pit increases, and sucks ink from manifold 5 one sides.Thereafter, if the current potential of individual electrode 35a, 35b restores to the original state, because piezoelectric board 41～45 also becomes writing board shape, the volume of balancing gate pit 10 recovers, and can spray ink from inkjet mouth.
As mentioned above, among the ink jet-print head 1 of present embodiment, as shown in Figure 6, since be connected a end and two ends closure (the 2nd direction) between the other end that is connected on the secondary manifold 5a on the nozzle in the balancing gate pit 10 be parallel in essence with channel unit 4 in the configuration plane of plural balancing gate pit, thereby the pressure wave that produces balancing gate pit 10 in is in essence along surperficial propagation.When pressure wave under situation about propagating with the surperficial vertical direction of channel unit 4, if do not increase the thickness (with respect to the length of the direction vertical with printhead 1 surface) of ink jet-print head 1, AL length will shorten.Yet, just as in the embodiment shown, under the situation that pressure is propagated by 4 surfaces, unit, longshore current road, needn't increase the thickness of ink jet-print head, also can make AL length elongated relatively.So, the generation that makes pressure wave owing to can have ample time and the moment of reflection match, thereby can adopt with extrusion and compare, its capacity usage ratio is better, so-called " taking out pressure " method is (in advance to all individual electrode 35a, 35b applies voltage, the volume of all balancing gate pits 10 is dwindled, only remove the individual electrode 35a of the balancing gate pit 10 that wants ink ejection operation, the voltage of 35b enlarges its volume, produce NPW with regard to the people, then, again to individual electrode 35a, 35b applies voltage, and the volume of balancing gate pit 10 is dwindled, and reverses by the NPW with previous generation, match when arriving in the reflection back, apply positive pressure wave, make the two superposition, utilize the pressure wave of in balancing gate pit 10, propagating, more efficiently ink is applied a kind of mode of ejection pressure).That is to say,, can improve the energy utilization efficiency in the ink jet-print head 1 if adopt above-mentioned formation.
In addition, an end and other end line direction bloat towards departing from because balancing gate pit 10 has, acerous oval-shaped flat shape, the interval between the adjacent balancing gate pit 10 broadens, thereby can suppress a plurality of balancing gate pits 10 near the problem of crosstalking each other that occurs under the situation about disposing.
Also have, owing to adopted clarifier, make the bubble in the ink be easy to discharge, bubble is difficult in the China ink and is detained.Thereby solved the normally problem of ink-jet that causes owing to bubble.
In addition, since along accommodated balancing gate pit 10 diamond-shaped area 10x long-diagonal direction (cornerwise direction: the 1st direction) be connected the balancing gate pit in an end and the direction (direction of both ends: the 2nd direction) of the other end, the unanimity of pressure-wave propagation direction just, thereby can realize the high integration configuration of balancing gate pit 10 and ink jet stream simultaneously smoothly, also can effectively prolong AL length.And, because the prolongation of AL length also makes the control of " taking out pressure " become more easy.
In addition, adopt the flat shape on channel unit 4 surfaces make balancing gate pit 10 to be, along the pressure-wave emission direction, (direction of both ends: longilineal method the 2nd direction) also can obtain the effect of AL length prolongation to connect the direction of an end and the other end.
In addition, employing makes the direction (direction of both ends: 2nd direction) axisymmetric method of the flat shape of balancing gate pit 10 with respect to connection one end and the other end of pressure-wave emission direction, the pressure wave that takes place in balancing gate pit 10 is reflected symmetrically, obtain stable ink-jet effect.
In addition, because channel unit 4, be with being provided with the stacked method formation of 9 sheet material 22-30 of corresponding opening separately, so the making of channel unit 4 is also very simple.
In addition, among the printhead body 1a of ink jet-print head 1, all divided a plurality of performance elements 21 in each ink-jet zone are to be bonded on the state of channel unit 4, along its length direction configuration.So just can (overcome) because of the error that adopts the dimensional accuracy aspect that manufacturing process such as sintering are easy to generate (problem), make the identical possibility that becomes in each performance element 21 and the position of channel unit 4, even inkjet printing head length yardstickization, also can suppress the increase of the position deviation amount between performance element 21 and the channel unit 4, the two is coincide more accurately.Even, also can reduce its position and depart from assigned position significantly, thereby significantly improve the manufacturing qualification rate of ink jet-print head 1 with respect to balancing gate pit 10 from target individual electrode 35a, 35b at a distance.On the other hand, different therewith, if with performance element 21 as the long size element shaping same with channel unit 4, when performance element 21 is overlapped with channel unit 4, the position of individual electrode 35a, the 35b corresponding with each balancing gate pit 10 that sees from above is apart from the departure of assigned position, can become big more from target is far away more, feasible inkjet performance in target balancing gate pit 10 far away worsens, thereby loses the uniformity of the inkjet performance in the ink jet-print head 1.
Owing among performance element 21,, utilize its piezo-electric effect that the volume of balancing gate pit 10 is changed owing to seizing piezoelectric board 41～43 on both sides by the arms with common electrode 34a, 34b and individual electrode 35a, 35b.In addition, since piezoelectric board 41～45th, continuous stratiform flat board (flat layer continuously), thereby can be easy to make performance element 21.
In addition, ink jet-print head 1 has being set at non-active layer near the piezoelectric board 44,45 of balancing gate pit 10, will be from the balancing gate pit 10 piezoelectric boards 41～43 far away be set at the performance element 21 of single surface texture of the layer that contains active layer.Thereby pressured electric transversal effect, the volume variable of balancing gate pit 10 is increased, with 10 1 sides configurations active layer and compare at the performance element of its opposite side configuration non-active layer in the balancing gate pit, can make individual electrode 35a, 35b the driving voltage lower voltage and/or make the configuration of balancing gate pit 10 highly integrated.Since the lower voltage of driving voltage, thereby can make the driver miniaturization that drives individual electrode 35a, 35b, thus reduce manufacturing cost; Even making balancing gate pit 10 very for a short time, under the highly integrated situation, also can spray the ink of q.s, realize the miniaturization of printhead 1 and the arranged in high density of printing ink dot.
In addition, as above-mentioned, among the printhead body 1a of ink jet-print head 1, each performance element 21 has trapezoidal shape in essence, the parallel opposite side of each performance element 21 is along the length direction of channel unit 4, and each hypotenuse of adjacent performance element 21 overlaps at the width of channel unit 4.Two row that a plurality of performance elements 21 are configured to interlock so just.Therefore, overlapped by adjacent performance element 21 each hypotenuse, can be on the length direction of ink jet-print head 1, each balancing gate pit 10 that the width of unit, longshore current road 4 exists can replenish each other, when realizing the fine definition printing, can also be made into the very narrow small-sized ink jet-print head 1 of width.
The flat shape of balancing gate pit on channel unit 4 surfaces also can not be the closure (direction of both ends: elongated shape the 2nd direction) towards the other end of an end that connects nozzle and auxiliary connection manifold 5a.Yet in this case, can't the desired pressure chamber highly integrated.
In addition, the rectangular configuration direction as a plurality of balancing gate pits on the surface of channel unit 4 if the direction on the surface of unit, longshore current road 4 then is not limited to the 1st orientation shown in Figure 6 and the 2nd orientation, also can adopt various directions.
In addition, the zone is accommodated so long as parallelogram is just passable by balancing gate pit 10, be not limited to rhombus, and be housed in the flat shape of the balancing gate pit 10 self in its zone if be housed among this zone and towards departing from acerous ellipse or the 2n dihedral (n: natural number that the line direction that connects an end and the other end bloats, n 〉=3), also can suitably change to different shape.For example, the variation as the flat shape of balancing gate pit has the example shown in Figure 11 (a) and Figure 12 (a).Among Figure 11 (a), as the 1st variation, illustrate substantially that (direction of both ends: line direction the 2nd direction) is cut away the angle corresponding with the obtuse angle part of diamond-shaped area 60x abreast, has the example of the balancing gate pit 60 of 6 dihedral flat shapes in essence with an end that connects balancing gate pit 10 and the other end.Among Figure 12 (a),, illustrate along an end that connects balancing gate pit 10 and the other end (direction of both ends: the 2nd direction), have the example of the balancing gate pit 70 of the flat shape that is ellipse substantially also more elongated than above-mentioned example as the 2nd variation.Here, the flat shape of individual electrode 65a, 65b and individual electrode 75a, 75b is for similar to balancing gate pit 60,70 respectively in essence, an only little circle be 6 dihedrals and ellipse substantially.Among Figure 11 (a) and (b) and Figure 12 (a) and (b), though do not mark nozzle that is connected balancing gate pit's 60 1 ends and the secondary manifold that is connected the other end, but all the situation with above-mentioned embodiment is identical for these, and the two ends on the long-diagonal of diamond-shaped area 60x, 70x form.The direction of arrow among the figure is represented the pressure-wave propagation direction.
The balancing gate pit 60,70 that Figure 11 (b) and Figure 12 (b) illustrate the 1st and the 2nd variation of describing among Figure 11 (a) and Figure 12 (a) respectively is configured to 3 * 3 rectangular state.At first, shown in Figure 11 (b), when adopting the 1st variation, the balancing gate pit 60 that is essentially 6 dihedral planes is configured under the rectangular situation, with the d1 that is spaced apart of the parallel direction of the short diagonal of diamond-shaped area 60x in the adjacent balancing gate pit 60,60.Identical therewith, be configured to rectangular the 2nd variation shown in Figure 12 (b), be essentially the above-mentioned d2 of being spaced apart in the balancing gate pit 70 of elliptic plane.Interval between this adjacent pressure chambers can be regarded as: each balancing gate pit situation similar and slightly smaller than rhomboid 60x, 70x more greatly.One broaden like this at interval, with regard to the problem that can under the situation of a plurality of balancing gate pits neighbor configuration, not occur crosstalking mutually.
Especially about adopting the balancing gate pit 60 of the 1st variation shown in Figure 11 (a) and (b), (direction of both ends: closure the 2nd direction) is cut away the shape at angle substantially abreast, can effectively increase the interval between each balancing gate pit 60 of rectangular configuration with an end of balancing gate pit 10 and the other end by being set at.That is to say, needn't significantly reduce the area of balancing gate pit 60, interval, the inhibition that just can increase by 60 of each balancing gate pits are crosstalked mutually.In addition, because the flat shape of balancing gate pit 60 is the fairly simple shapes that are 6 dihedrals substantially, thereby can form balancing gate pit 60 with comparalive ease.
In addition, the flat shape of balancing gate pit also can be the ellipse of 8 dihedrals, 10 dihedrals, distortion etc.
In addition, channel unit 4 also can not adopt the method manufacturing that is laminated by a plurality of sheet materials.
In addition, the piezoelectric board in the performance element 21 and the material of electrode are not limited to above-mentioned material, also can adopt other material known.In addition, as non-active layer, also can adopt piezoelectric board insulating trip in addition.Also have, contain the number of plies of active layer, number of plies of non-active layer or the like also can suitably change.For example among above-mentioned embodiment, the piezoelectric board that contains active layer that comprises in the performance element 21 is folded layer by layer though be 3 layers or 5, also can be stacked more than 7 layers.And, also can be and the quantity of appropriate change individual electrode and common electrode along with the change of the stacked number of piezoelectric board.In addition, among above-mentioned embodiment, the piezoelectric board that is included in the non-active layer in the performance element 21 is two-layer, but also can be one deck, as long as do not hinder the dilatation of performance element 21, also can be set at more than 3 layers.In addition, among the performance element 21 of above-mentioned embodiment, disposed non-active layer in balancing gate pit's one side of the layer that contains active layer, but also can contain the layer of active layer, can also not establish non-active layer in the balancing gate pit of non-active layer 10 1 sides configurations.But, in the balancing gate pit of the layer that contains active layer non-active layer 44,45 is set, be expected further to improve the displacement efficient of performance element 21.
In addition, among above-mentioned embodiment, be set at and make common electrode 34a, 34b maintenance earthing potential, but, also be not limited thereto kind of a method if can make each balancing gate pit 10 keep same current potential.
In addition, among above-mentioned embodiment, as shown in Figure 4, the trapezoidal a plurality of performance elements 21 of interconnected two row, but performance element 21 also not necessarily will be with trapezoidal, and also can be with the length direction single file arrangement of unit, a plurality of performance element longshore current road.Perhaps with more than the interconnected triplex row of performance element.In addition, a performance element 21 is not crossed over 10 configurations of a plurality of balancing gate pits, can be given each balancing gate pit's configuration a performance element 21 yet.
In addition, in order to make common electrode 34a, the 34b view field on stacked direction comprise the zone, balancing gate pit, perhaps view field is comprised by the zone, balancing gate pit, also can be a plurality of in each balancing gate pit's 10 formation, and not necessarily to establish a slice conducting film in the almost whole zone in a performance element 21.But at this time, all common electrodes are electrically connected to each other, so as with balancing gate pit's 10 corresponding parts all be same current potential.
Although with reference to above-mentioned specific embodiment the present invention has been described, various to those skilled in the art changes, modification and distortion are conspicuous.Therefore, as above the art guest of institute the preferred embodiments of the present invention purpose is explanation, rather than restriction.Can carry out various modifications and not break away from the spirit and scope of the invention of determining as claims.

Claims (25)

1. an ink jet-print head has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, and an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source;
On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have that the line direction that connects an above-mentioned end and the other end bloats towards departing from, the flat shape of an acerous 2n quadrangle (n: natural number, n 〉=3);
Along the 1st direction of the long-diagonal in above-mentioned parallelogram zone be connected above-mentioned balancing gate pit in an above-mentioned end and the 2nd direction of the above-mentioned other end be consistent in essence.
2. ink jet-print head according to claim 1, the above-mentioned flat shape of above-mentioned balancing gate pit is a hexagon.
3. ink jet-print head according to claim 1, the flat shape of above-mentioned balancing gate pit are the elongated shapes along above-mentioned the 2nd direction.
4. ink jet-print head according to claim 1, the above-mentioned flat shape of above-mentioned balancing gate pit are the axisymmetric shapes with respect to above-mentioned the 2nd direction.
5. ink jet-print head according to claim 1, above-mentioned a plurality of balancing gate pits are matrix-shaped configurations along the plane of above-mentioned channel unit.
6. ink jet-print head according to claim 1 is used to change the piezoelectric board of above-mentioned balancing gate pit volume, crosses over being provided with more than two in above-mentioned a plurality of balancing gate pit.
7. ink jet-print head according to claim 1 has a plurality of above-mentioned balancing gate pits of leap and disposes, and is used to change the performance element (odd number) of above-mentioned balancing gate pit volume.
8. an ink jet-print head has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, and an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source;
On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have that the line direction that connects an above-mentioned end and the above-mentioned other end bloats towards departing from, acerous elliptic plane shape; Along the 1st direction of the long-diagonal in above-mentioned parallelogram zone with connect above-mentioned balancing gate pit in an above-mentioned end and the 2nd direction of the above-mentioned other end be consistent in essence.
9. ink jet-print head according to claim 8, the flat shape of above-mentioned balancing gate pit are the elongated shapes along above-mentioned the 2nd direction.
10. ink jet-print head according to claim 8, the above-mentioned flat shape of above-mentioned balancing gate pit are the axisymmetric shapes that is with respect to above-mentioned the 2nd direction.
11. ink jet-print head according to claim 8, above-mentioned a plurality of balancing gate pits, the plane along above-mentioned channel unit is matrix-shaped configurations.
12. ink jet-print head according to claim 8 is used to change the piezoelectric board of above-mentioned balancing gate pit volume, crosses over setting more than two in above-mentioned a plurality of balancing gate pit.
13. ink jet-print head according to claim 8 has a plurality of above-mentioned balancing gate pits of leap and disposes, and is used to change the performance element (odd number) of above-mentioned balancing gate pit volume.
14. an ink-jet printer, this machine include the ink jet-print head that has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source;
On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have towards the flat shape that departs from the 2n dihedral (n: natural number, n 〉=3) that the line direction that connects an above-mentioned end and the other end bloats;
The 1st direction along above-mentioned parallelogram zone long-diagonal is consistent with being connected above-mentioned balancing gate pit one end with the 2nd direction of the other end in essence.
15. an ink-jet printer, this machine include the ink jet-print head that has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source;
On the configuration plane of a plurality of above-mentioned balancing gate pits of above-mentioned channel unit, a plurality of above-mentioned balancing gate pits are housed in respectively among the parallelogram zone, and have that the line direction that connects above-mentioned balancing gate pit one end and the other end bloats towards departing from, acerous oval-shaped flat shape;
In essence is consistent with an above-mentioned end in being connected above-mentioned balancing gate pit with the 2nd direction of the other end along the 1st direction of the long-diagonal in above-mentioned parallelogram zone.
16. an ink jet-print head has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source;
Connect the above-mentioned end in the above-mentioned balancing gate pit and the direction of the above-mentioned other end, parallel with the configuration plane of plural above-mentioned balancing gate pit in the above-mentioned channel unit in essence.
17. ink jet-print head according to claim 16, on the configuration plane of a plurality of above-mentioned balancing gate pits in having disposed above-mentioned channel unit, a plurality of balancing gate pits have the flat shape that is housed in respectively by among a plurality of parallelogram of rectangular disposed adjacent on the 1st direction of longshore current road element length direction and the 2nd direction different with above-mentioned the 1st direction;
The 3rd direction along above-mentioned parallelogram zone long-diagonal is parallel in essence with the 4th direction of the above-mentioned other end with the above-mentioned end in being connected above-mentioned balancing gate pit.
18. ink jet-print head according to claim 17, above-mentioned the 3rd direction is consistent with above-mentioned the 4th direction.
19. ink jet-print head according to claim 16 is used to change the piezoelectric board of above-mentioned balancing gate pit volume, crosses over setting more than two in above-mentioned a plurality of balancing gate pit.
20. ink jet-print head according to claim 17, the flat shape that has disposed the above-mentioned balancing gate pit on the configuration plane of a plurality of above-mentioned balancing gate pits in the above-mentioned channel unit are the elongated shapes along above-mentioned the 4th direction (pressure-wave propagation direction).
21. ink jet-print head according to claim 17, disposed in the above-mentioned channel unit a plurality of above-mentioned balancing gate pits configuration plane on the flat shape of above-mentioned balancing gate pit be axisymmetric shape with respect to above-mentioned the 4th direction (pressure-wave emission direction).
22. ink jet-print head according to claim 17, the flat shape that has disposed the above-mentioned balancing gate pit on the configuration plane of a plurality of above-mentioned balancing gate pits in the above-mentioned channel unit are and the similar parallelogram of above-mentioned parallelogram zone essence.
23. ink jet-print head according to claim 22, the flat shape that has disposed the above-mentioned balancing gate pit on the configuration plane of a plurality of balancing gate pits in the above-mentioned channel unit is a rhombus.
24. an ink jet-print head has disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged, an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source;
Connect the above-mentioned end in the above-mentioned balancing gate pit and the direction of the other end, parallel in essence with the face that has disposed a plurality of above-mentioned balancing gate pits in the above-mentioned channel unit;
In above-mentioned channel unit, disposed on the configuration plane of a plurality of balancing gate pits, had the flat shape among a plurality of parallelogram zone that is the rectangular disposed adjacent on the 1st direction that a plurality of above-mentioned balancing gate pits are housed in above-mentioned channel unit length direction respectively and the 2nd direction different with above-mentioned the 1st direction;
Consistent along the 3rd direction of the long-diagonal in above-mentioned parallelogram zone with a end and the 4th direction of the above-mentioned other end in connecting above-mentioned balancing gate pit;
Be used to change the piezoelectric board of above-mentioned balancing gate pit volume, cross over setting more than two in above-mentioned a plurality of balancing gate pit.
Disposed the channel unit (odd number) that a plurality of balancing gate pits are arranged 25. an ink-jet printer, this machine include, an end of this balancing gate pit is connected with nozzle, and the other end is connected with the ink supply source, and disposes along two-way array shape;
To have disposed the configuration plane of the above-mentioned balancing gate pit in the above-mentioned channel unit parallel with plural number in essence for the direction that connects an above-mentioned end and the above-mentioned other end in the above-mentioned balancing gate pit.
CN 03106110 2002-02-18 2003-02-18 Ink jet printer head and ink jet printer having ink jet printer head Expired - Lifetime CN1280095C (en)

Applications Claiming Priority (8)

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JP2002040524 2002-02-18
JP040524/2002 2002-02-18
JP2002044626 2002-02-21
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CN1986231B (en) * 2005-12-21 2011-06-29 三星电子株式会社 Array print-head and inkjet image forming apparatus having the same
CN102821961A (en) * 2010-03-26 2012-12-12 京瓷株式会社 Drive device for driving fluid discharge head, recording device, and recording method
CN103608182A (en) * 2011-06-28 2014-02-26 京瓷株式会社 Liquid discharge head and recording device using same
CN104070801A (en) * 2013-03-27 2014-10-01 精工爱普生株式会社 Liquid ejecting head and liquid ejecting apparatus

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WO2013014977A1 (en) 2011-07-28 2013-01-31 京セラ株式会社 Piezoelectric acuator, liquid discharge head, and recording device

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US4317124A (en) * 1979-02-14 1982-02-23 Canon Kabushiki Kaisha Ink jet recording apparatus
EP0577383B1 (en) * 1992-06-29 2003-10-08 Hewlett-Packard Company, A Delaware Corporation Thin film resistor printhead for thermal ink jet printers
JPH0825628A (en) * 1994-07-19 1996-01-30 Fujitsu Ltd Ink jet head
JPH08267743A (en) * 1995-03-30 1996-10-15 Seikosha Co Ltd Ink jet head
US6604817B2 (en) * 2000-03-07 2003-08-12 Brother Kogyo Kabushiki Kaisha Print head for piezoelectric ink jet printer, piezoelectric actuator therefor, and process for producing piezoelectric actuator
US6488355B2 (en) * 2000-03-21 2002-12-03 Fuji Xerox Co., Ltd. Ink jet head

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1986231B (en) * 2005-12-21 2011-06-29 三星电子株式会社 Array print-head and inkjet image forming apparatus having the same
CN102821961A (en) * 2010-03-26 2012-12-12 京瓷株式会社 Drive device for driving fluid discharge head, recording device, and recording method
CN102821961B (en) * 2010-03-26 2015-09-23 京瓷株式会社 The drive unit of head, tape deck and recording method is shootd out for driving liquid
CN103608182A (en) * 2011-06-28 2014-02-26 京瓷株式会社 Liquid discharge head and recording device using same
CN103608182B (en) * 2011-06-28 2016-03-30 京瓷株式会社 Fluid ejection head and use the tape deck of this fluid ejection head
CN104070801A (en) * 2013-03-27 2014-10-01 精工爱普生株式会社 Liquid ejecting head and liquid ejecting apparatus
CN104070801B (en) * 2013-03-27 2016-08-24 精工爱普生株式会社 Fluid jetting head and liquid injection apparatus

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EP1336490A2 (en) 2003-08-20
EP1336490B1 (en) 2008-10-01
CN2732483Y (en) 2005-10-12
CN1280095C (en) 2006-10-18
DE60323773D1 (en) 2008-11-13

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