CN1275771C - Ink jet head and ink jet printer having ink jet head - Google Patents
Ink jet head and ink jet printer having ink jet head Download PDFInfo
- Publication number
- CN1275771C CN1275771C CN 03106164 CN03106164A CN1275771C CN 1275771 C CN1275771 C CN 1275771C CN 03106164 CN03106164 CN 03106164 CN 03106164 A CN03106164 A CN 03106164A CN 1275771 C CN1275771 C CN 1275771C
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- mentioned
- performance element
- balancing gate
- ink
- channel unit
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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
- B41J2/145—Arrangement thereof
- B41J2/155—Arrangement thereof for line printing
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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
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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
- B41J2002/14217—Multi layer finger type piezoelectric element
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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
- B41J2002/14225—Finger type piezoelectric element on only one side of the chamber
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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
- B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
- B41J2002/14258—Multi layer thin film type piezoelectric element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2002/14306—Flow passage between manifold and chamber
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- 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
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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
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/19—Assembling head units
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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
- 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 comprises a passage unit including pressure chambers connected with a nozzle and an ink supply source. The ink-jet head further comprises actuator units for changing the volume of each pressure chamber. Each actuator unit includes pressure generation portions respectively corresponding to pressure chambers, and is formed to extend over the pressure chambers. The actuator units are arranged along the longitudinal direction of the passage unit so that each neighboring actuator units partially overlap each other in the lateral direction of the passage unit. Each actuator unit has a basic region where many pressure generation portions are formed in a matrix, and an additional region neighboring the basic region in the lateral direction of the passage unit. In the additional region, additional pressure generation portions are formed to compensate for a gap portion between the pressure generation portions of adjacent basic regions.
Description
Technical field
The present invention relates to ink gun that the injection ink prints on print media and ink-jet printer with ink gun.
Background technology
In ink-jet printer, ink gun is selected to exert pressure from nozzle ejection ink by giving each balancing gate pit distributing to a plurality of balancing gate pits from the ink container ink supplied.Be used for being to use the stacked performance element that forms of a plurality of piezoelectric patches of making by pottery to a kind of method that the balancing gate pit selects to exert pressure.
An example of known this ink gun is stacked a plurality of continuous flat piezoelectric patches that strides across a plurality of balancing gate pits, has a performance element, by the common electrode of the shared maintenance earthing potential in a plurality of balancing gate pits with to be arranged on corresponding to the locational a plurality of individual electrode in each balancing gate pit be that drive electrode wherein (is opened flat 4-341852 communique at least one piezoelectric patches clamping with reference to the spy).If it is different with the current potential of common electrode to be positioned at its drive electrode of both sides, be driven electrode and common electrode clamping and also in the piezoelectric patches part of stacked direction polarization as active layer, because so-called piezoelectricity longitudinal effect is flexible at stacked direction.Therefore the volume change in the balancing gate pit can be sprayed ink to print media from the nozzle that is communicated with the balancing gate pit.
Therefore, in such ink gun,, must make performance element correctly locate (aligning), make position from the plane individual electrode relative on institute's allocation with each balancing gate pit with respect to channel unit in order to ensure good ink discharge performance.
Above-mentioned ink gun is because all restrictions of making, make respectively contain the formed channel unit of ink flow path and performance element of balancing gate pit after, majority is made as the inboard balancing gate pit with both are bonded to each other by using adhesive.Such adhesion technique is to finish making under the consistent state of the mark that forms on the mark that forms on the channel unit and the performance element.
Therefore, owing to being the duplexer of a plurality of metallic plates for general channel unit, piezoelectric patches is through the sintering process manufacturing, and therefore the size along with the piezoelectric patches in the performance element becomes big, the positional precision reduction of electrode.Therefore, it is elongated to be accompanied by ink gun, and balancing gate pit and the location between the individual electrode in the performance element in the channel unit become difficult, and the fabrication yield of ink gun descends.
On the one hand, performance element is expensive precise part, and simultaneously owing to made by pottery, so character is very crisp.The performance element that particularly has the polygonal outer shape, its bight are easy to damage, and its damaged loss is the main cause that manufacturing cost increases.And in order not collide miscellaneous part in the bight that makes it, performance element is installed must be very careful, so the assembling operation of ink gun is very difficult.
Summary of the invention
Therefore, an object of the present invention is to provide the more pinpoint ink gun of a kind of performance element and channel unit.
Another object of the present invention provides a kind of performance element and is not easy damaged ink gun.
According to a scheme of the present invention, a kind of ink gun and the ink-jet printer that comprises this ink gun are provided, described ink gun has: channel unit, comprise that an end is connected a plurality of balancing gate pits that nozzle, the other end are connected the providing ink source, the configuration adjacent to each other along the plane of above-mentioned a plurality of balancing gate pits; With a plurality of lip-deep performance elements that are fixed on above-mentioned channel unit, be used to make the volume of above-mentioned balancing gate pit to change, each performance element has a plurality of pressure generating units corresponding with each balancing gate pit, form by the size of crossing over a plurality of above-mentioned balancing gate pits simultaneously, the above-mentioned performance element that is arranged in adjacency along the length direction of above-mentioned channel unit is being overlapped between mutually on the width of above-mentioned channel unit, and each performance element has: the fundamental region that a plurality of above-mentioned pressure generating units form with matrix form; With append the zone, be corresponding to above-mentioned fundamental region, on the width of above-mentioned channel unit adjacency append the zone, forming above-mentioned pressure generating unit corresponding to the gap portion between the above-mentioned pressure generating unit in the above-mentioned fundamental region of the above-mentioned pressure generating unit in the above-mentioned fundamental region and adjacent another performance element.
Like this, a plurality of performance element can position respectively and between the channel unit.Therefore, even ink gun is elongated, also can suppress the increase of the electrode and the position offset between the balancing gate pit of each performance element, the two can be with hi-Fix.Therefore, good ink discharge performance can be obtained, the fabrication yield of ink gun can be improved simultaneously.And, since design in some performance elements append in the zone the pressure generating unit corresponding to the fundamental region of adjacent performance element in the gap portion of pressure generating unit, therefore the number of pressure generating unit does not reduce near the seam portion of adjacent performance element.Therefore can obtain the ink gun that do not change in fact along the number of the pressure generating unit of overall flow paths element length direction.
According to another aspect of the present invention, provide a kind of ink gun, have: channel unit comprises the balancing gate pit that nozzle a plurality of and the ejection ink is communicated with, the configuration adjacent to each other along the plane of above-mentioned a plurality of balancing gate pits; With a plurality of lip-deep performance elements that are fixed on above-mentioned channel unit, be used to make the volume of above-mentioned balancing gate pit to change, have a plurality of pressure generating units corresponding with each balancing gate pit, form by the size of crossing over a plurality of above-mentioned balancing gate pits simultaneously, above-mentioned performance element has the contour shape of the straight line portion more than five, and each straight line portion is connected with any angle in right angle or the obtuse angle with its adjacent straight line portion.
Like this, because in the bight of performance element any one met at right angles or the obtuse angle, when making ink gun, be difficult for taking place performance element and damage.
According to another aspect of the present invention, provide a kind of ink gun, have: channel unit comprises that an end is connected a plurality of balancing gate pits that nozzle, the other end are connected the providing ink source, the configuration adjacent to each other along the plane of above-mentioned a plurality of balancing gate pits; With a plurality of lip-deep performance elements that are fixed on above-mentioned channel unit, be used to make the volume of above-mentioned balancing gate pit to change, each performance element has a plurality of pressure generating units corresponding with each balancing gate pit, form by the size of crossing over a plurality of above-mentioned balancing gate pits simultaneously, arrange along the length direction of above-mentioned channel unit.
Like this, a plurality of performance element can position respectively and between the channel unit.Therefore, even ink gun is elongated, also can suppress the increase of the electrode and the position offset between the balancing gate pit of each performance element, the two can be located with high precision alignment.Therefore, good ink discharge performance can be obtained, the fabrication yield of ink gun can be improved simultaneously.
Description of drawings
Of the present invention other and advance one deck purpose, characteristics and advantage and will become more clear by description below in conjunction with accompanying drawing.
Fig. 1 is the schematic representation that comprises the ink-jet printer of ink gun according to the first embodiment of the present invention;
Fig. 2 is the perspective view according to first embodiment of the present invention ink gun;
Fig. 3 is the profile that the III-III in Fig. 2 cuts open;
Fig. 4 is the plane that comprises the ink gun main body of the ink gun shown in Fig. 2;
Fig. 5 is the enlarged drawing of the single-point line scope of surrounding shown in Fig. 4;
Fig. 6 is the enlarged drawing of the single-point line scope of surrounding shown in Fig. 5;
Fig. 7 is the partial section of the ink gun main body shown in Fig. 4;
Fig. 8 is the enlarged drawing of the scope that double dot dash line is surrounded shown in Fig. 5;
Fig. 9 is the partial, exploded perspective view of the ink gun main body shown in Fig. 4;
Figure 10 is from laterally seeing the enlarged drawing of the single-point line scope of surrounding shown in Fig. 7;
Figure 11 is the plane of the included ink gun main body of ink gun according to a second embodiment of the present invention;
Figure 12 is the ground plan of the ink gun main body shown in Figure 11;
Figure 13 is the cross section of the ink gun main body shown in Figure 11;
Figure 14 is the enlarged drawing of the single-point line scope Q that surrounds shown in Figure 13;
Figure 15 is the partial section of the ink gun main body shown in Figure 11;
Figure 16 is the amplification sectional view that the detailed structure of the performance element in the ink gun main body shown in Figure 11 is shown;
Figure 17 is the amplification view that the performance element in the ink gun main body shown in Figure 11 is shown;
Figure 18 illustrates the amplification view of seam portion each other of the performance element shown in Figure 17;
Figure 19 is the amplification view of the performance element in according to a second embodiment of the present invention the variation;
Figure 20 illustrates the amplification view of seam portion each other of the performance element shown in Figure 19;
Figure 21 (a) and Figure 21 (b) are the planes of ink gun main body included in the ink gun of describing as variation of the present invention that is made of side by side four performance elements;
Figure 22 is the plane of ink gun main body included in the ink gun of a third embodiment in accordance with the invention;
Figure 23 is the ground plan of the ink gun main body shown in Figure 22;
Figure 24 is the cross section of the ink gun main body shown in Figure 22;
Figure 25 is the enlarged drawing of the single-point line scope E that surrounds shown in Figure 24;
Figure 26 is the partial section of the ink gun main body shown in Figure 22;
Figure 27 is the amplification sectional view that the detailed structure of the performance element in the ink gun main body shown in Figure 22 is shown;
Figure 28 (a) illustrates the ideograph of the contour shape of performance element included in the ink gun main body shown in Figure 22;
Figure 28 (b) is the ideograph of contour shape that the performance element of a variation is shown;
Figure 29 (a) is that performance element is the plane of heptagonal variation in the ink gun main body shown in Figure 22;
Figure 29 (b) is the plane of performance element included in the ink gun main body shown in Figure 29 (a);
Figure 30 (a) is that performance element is the plane of octagonal variation in the ink gun main body shown in Figure 22;
Figure 30 (b) is the plane of performance element included in the ink gun main body shown in Figure 30 (a);
Figure 31 (a) is the plane that the part of the profile of performance element in the ink gun main body shown in Figure 22 forms the variation of circular shape;
Figure 31 (b) is the plane of performance element included in the ink gun main body shown in Figure 31 (a);
Figure 32 is the ideograph of major part of the ink-jet printer of a fourth embodiment in accordance with the invention.
The specific embodiment
At first, referring to figs. 1 through the ink gun of Figure 10 explanation according to first embodiment of the invention.Fig. 1 is the schematic representation that comprises the ink-jet printer of this ink gun.Ink-jet printer 101 shown in Figure 1 is the color inkjet printers with 4 ink guns 1.Right-hand among left in this printer 101 among the figure and the figure constitutes paper feed part 111 and row's paper portion 112 respectively.
Be formed with from the sheet conveying path of paper feed part 111 in printer 101 inside to the 112 directions motion of row's paper portion.Downstream near paper feed part 111 is provided with a pair of roller 105a, the 105b of transporting, and is used for clamping and transports the image-recording medium paper.By a pair ofly transport roller 105a, the left side of 105b paper from figure is transported to the right side.In the middle of the sheet conveying path, be provided with two belt pulleys 106,107 and the coiling endless belt conveyer 108 of leap between two-wheeled 106,107.Outer peripheral face at conveyer belt 108 is to carry out silicone-treated on the transmission plane, remain on the transmission plane of conveyer belt 108 by a pair of paper that roller 105a, 105b the transport bonding force by transmission plane that transports, simultaneously can by one transport roller 106 in the drawings clockwise the rotation on (direction shown in the arrow 104) drive and be transported to downstream (right-hand).
In the insertion and drain position of paper, be respectively arranged with and press town parts 109a, 109b with respect to conveyer belt 106. Press town parts 109a, 109b to be used to make the paper on the conveyer belt 108 not float, paper by on the transmission plane that is pressed in conveyer belt 108, is guaranteed to be bonded on the transmission plane from transmission plane.
Be provided with mechanism for stripping 110 along the sheet conveying path at rear, downstream near conveyer belt 108.Mechanism for stripping 110 constitutes to be peeled off the paper on the transmission plane that is bonded at conveyer belt 108 from transmission plane, transport towards right-hand row's paper portion 112.
4 ink guns 1 have ink gun main body 1a in its lower end.Ink gun main body 1a has the square-section respectively, and setting near each other makes its longitudinal direction be the direction (paper vertical direction in Fig. 1) vertical with the sheet conveying direction.That is, described printer 101 is line printers.Each bottom surface of 4 ink gun main body 1a is facing to the sheet conveying path, and described bottom surface is provided with the nozzle of the ink jet exit formation of a plurality of micro-apertures.Spray magenta, yellow, cyan and black ink respectively from 4 ink gun main body 1a.
Ink gun main body 1a is arranged between its transmission plane of following and conveyer belt 18 and forms little clearance, forms the sheet conveying path at described gap portion.Utilize this formation, by under 4 ink gun main bodys 1 time, versicolor ink is that printing surface sprays from nozzle to the upper surface of described paper to the paper that transports on conveyer belt 108, can form desirable chromatic image on paper in turn.
Ink-jet printer 101 has maintenance unit 117, is used for automatically ink gun 1 being safeguarded.Described maintenance unit 117 is provided with 4 guard shields 116 of the lower surface that is used to cover 4 ink gun main body 1a or not shown purification mechanism etc.
When printing with ink-jet printer 101, maintenance unit 117 be positioned at paper feed part 111 under position (retreating position).Then, after printing is finished, satisfy during fixed condition (for example have only the state of the action of not printing continued when fixing time or when disconnecting the power operation of printer 101), move to lower surface position place near 4 ink gun main body 1a, cover the lower surface of ink gun main body 1a in this position (guard positions) respectively with guard shield 116, prevent the nozzle segment ink dried of ink gun main body 1a.
Belt pulley 106,107 and conveyer belt 108 are supported by base 113.Base 113 is loaded on the following pipe 115 that is arranged on it.Pipe 115 is that the center can rotate freely with the axle 114 that is installed on the center of departing from it.Therefore, along with the upper end height change of axle 114 rotational circle tubular parts 115, cooperate base 113 liftings with it.Make maintenance unit 117 when retreating position moves to guard positions, must guarantee to make pipe 115 to rotate suitable angle in advance, make base 113, conveyer belt 108 and belt pulley 106,107 from the distance that it is suitable that position shown in Figure 1 descends, maintenance unit 117 moves needed space.
In conveyer belt 108 area surrounded, promptly be provided with in the position relative and roughly be square shape (width of width and conveyer belt 108 is identical) guide 121, by supporting conveyer belt with following contact of the conveyer belt 108 of upside from inner peripheral surface with ink gun 1.
Below, the structure according to the ink gun 1 of present embodiment is described in detail.Fig. 2 is the perspective view of ink gun 1.Fig. 3 is the sectional view that the III-III in Fig. 2 cuts open.As shown in Figures 2 and 3, the ink gun 1 according to present embodiment has the ink gun main body 1a and the base portion 131 that is used to support described ink gun main body 1a that goes up the rectangular planar shape of extending in a direction (main scanning direction).Base portion 131 also supports to individual electrode 35a, 35b (with reference to Fig. 6) etc. drive IC 132 and the substrate 133 that drives signal is provided except supporting ink gun main body 1a.
As shown in Figure 2, base portion 131 is made of matrix 138 and support 139, and matrix 138 engages by the upper surface portion with ink gun main body 1a and supports ink gun main body 1a, and support 139 engages by the upper surface with matrix 138 and supports matrix 138.Matrix 138 is the parts that slightly are rectangular shape, the same length on the length direction of length and ink gun main body 1a.The matrix of being made by stainless steel and other metal materials 138 has the function of the lightweight construction body of reinforced support 139.Support 139 is made of rack body 141 and pair of brackets support portion 142, and rack body 141 is arranged on ink gun main body 1a one side, and extend to a side opposite with the ink gun main body from rack body 141 pair of brackets support portion 142.In the pair of brackets support portion 142 any one all is flat-shaped part, along the length direction of rack body 141 be separated by decide at interval setting parallel to each other.
Be provided with outstanding a pair of sleeve part 141a downwards at the two ends of the sub scanning direction (direction vertical) of rack body 141 with main scanning direction.Here, because each among a pair of sleeve part 141a forms the whole length of the length direction of crossing over ink gun main body 141, therefore the lower surface in ink gun main body 141 forms the slot part 141b that roughly is rectangular shape by a pair of sleeve part 141a.Matrix 138 is captured in the described slot part 141b.Utilize adhesive bonding the bottom surface of the slot part 141b of the upper surface of matrix 138 and ink gun main body 141.Because the thickness of matrix 138 is bigger than the degree of depth of the slot part 141b of rack body 141, protrude from the below of sleeve part 141a the bottom of matrix 138.
The inside of matrix 138 is formed with inkwell 3, as the stream that ink is provided to ink gun main body 1a, is the gap that roughly is rectangular shape (hollow region) of extending on its length direction.The lower surface 145 of matrix 138 is formed with the opening 3b (with reference to Fig. 4) that is communicated with inkwell 3.And inkwell 3 is connected by the interior unshowned main ink container (providing ink source) of not shown supply pipe and printer main body.Therefore, replenish an amount of ink from main ink container to inkwell 3.
The lower surface 145 of matrix 138 is outstanding downwards around the ratio near opening 3b.Therefore, the channel unit 4 (with reference to Fig. 3) of the ink gun main body 1a of part 145a contacts near 138 of matrixs and the opening 3b that is positioned at lower surface 145.Therefore, zone and ink gun main body 1a beyond near the part 145a opening 3b of the lower surface 145 of matrix 138 keep apart, and at described isolated part performance element 21 are set.
The lateral surface of the bracket leg support part 142 of support 139 is fixed with drive IC 132 by elastomeric elements such as hard sponge 137.The lateral surface of drive IC 132 closely is provided with radiator 134.Radiator 134 is the parts that roughly are rectangular shape, effectively distributes the heat that drive IC 132 produces.Print wiring plate FPC 136 as the flexibility of power supply part and be connected to drive IC 132.The FPC 136 that is connected on the drive IC 132 is electrically connected substrate 133 and ink gun main body 1a by the refined lead weldering is installed.Drive IC 132 and heat radiation 134 tops, the arranged outside of FPC 136 has substrate 133.Utilize seal member 149 to engage respectively between the upper surface of radiator 134 and the substrate 133 and between the lower surface of radiator 134 and the FPC 136.
Between the upper surface of the lower surface of the sleeve part 141a of rack body 141 and channel unit 4, be provided with seal member 150, so that clamping FPC 136.Be that FPC 136 is fixing with respect to channel unit 4 and ink gun main body 141 by seal member 150.Like this, can prevent under the elongated situation of ink gun main body 1a, deflection to take place, prevent the connecting portion stress application between performance element 21 and the FPC136, and support FPC 136 really.
As shown in Figure 2, near bight below the main scanning direction of ink gun 1,, uniformly-spaced be provided with 6 protuberance 30a along the sidewall of ink gun 1.These protuberances 30a is arranged on the part at sub scanning direction two ends of the undermost nozzle layer 30 (with reference to Fig. 7) of ink gun main body 1a.That is, nozzle layer 30 is along protuberance 30a and crooked about 90 degree of other portion boundary lines.Protuberance 30a is arranged in the printer 101 corresponding near the position the two ends of printing the various sizes paper that uses.Because the sweep of nozzle layer 30 part is not to form the right angle but have circular shape, therefore be not easy since with the approaching direction of ink gun 1 on the paper obstruction that causes of the contacts side surfaces of front end and ink gun 1 of the paper that transports be paper jam phenomenon.
Fig. 4 is the mode view of ink gun main body 1a.In Fig. 4, the imaginary dotted line of inkwell 3 usefulness that is formed in the matrix 138 is described.As shown in Figure 4, ink gun main body 1a forms the rectangular planar shape of (main scanning direction) extension in one direction.Ink gun main body 1a has the channel unit 4 that the ink jet exit 8 (simultaneously with reference to Fig. 5, Fig. 6 and Fig. 7) of a plurality of balancing gate pit 10 described later and spray nozzle front end forms, a plurality of trapezoidal performance elements 21 that are staggered to 2 row be bonded on it above.The parallel opposite side (bottom and upper segment) of each performance element 21 is along the length direction setting of channel unit 4.Therefore, the hypotenuse of adjacent performance element 21 is overlapped on the width of channel unit 4.
The lower surface of the channel unit 4 corresponding with the engaging zones of performance element 21 forms the ink jeting area.As hereinafter described, a plurality of ink jet exit 8 is the surface of cells arranged in matrix at the ink jeting area.And, be arranged on channel unit 4 above matrix 138 in form inkwell 3 along its length direction.The opening 3a of the end of inkwell 3 by being arranged on it is communicated with the ink container (not shown), is full of ink usually.Along its bearing of trend, per two opening 3b are a pair of, are crisscross arranged in the zone that performance element 21 is not set in the inkwell 3.
Fig. 5 is the enlarged drawing of the single-point line scope of surrounding shown in Fig. 4.Shown in Figure 4 and 5, inkwell 3 is communicated with the manifold 5 of the channel unit 4 of the lower floor that is positioned at it by opening 3b.Opening 3b is provided with the filter (not shown) of catching dust that (filtering) ink contains etc.The fore-end of manifold 5 forms two secondary manifold 5a that separate.Described 2 secondary manifold 5a enter the bottom of a performance element 21 respectively from two opening 3b at the length direction two ends that are positioned at the ink gun 1 relative with described performance element 21.That is, 4 secondary manifold 5a are arranged altogether in the bottom of a performance element 21 along extending on the length direction of ink gun 1.Each secondary manifold 5a is full of from inkwell 3 ink supplied.
Fig. 6 is the enlarged drawing of the single-point line scope of surrounding shown in Fig. 5.As shown in Figure 5 and Figure 6, the individual electrode 35 that roughly assumes diamond in shape of flat shape with matrix form be arranged on regularly performance element 21 above.Simultaneously, inside and the individual electrode at performance element 21 disposes the individual electrode 35b identical shaped with individual electrode 35a on the position overlapped about in the of 35.On surface, be provided with a plurality of ink jet exits 8 regularly with matrix form corresponding to the ink ejection zone of the performance element 21 of channel unit 4.Be provided with balancing gate pit 10 (cavity) 10 and micropore 12 regularly with matrix form respectively in the channel unit 4, described balancing gate pit 10 is communicated with each ink jet exit 8 simultaneously, and flat shape roughly assumed diamond in shape than a big week of individual electrode 35a, 35b.Balancing gate pit 10 is formed on the position corresponding with individual electrode 35a, 35b, sees that in the plane the major part of individual electrode 35a, 35b is included in the zone of balancing gate pit 10.And, in Fig. 5 and Fig. 6,, be positioned at that the balancing gate pit that should dot 10 of performance element 21 or channel unit 4 and micropore 12 etc. are existing to be represented with solid line in order to see drawing easily clearly.
Fig. 7 is the partial section along the balancing gate pit's length direction of the ink gun main body 1a shown in Fig. 4.As what seen from Fig. 7, the front end of each ink jet exit 8 forms thin nozzle form.Each ink jet exit 8 is communicated with secondary manifold 5a by balancing gate pit 10 (length is 900 μ m, and wide is 350 μ m) and micropore 12.Like this, ink gun 1 forms the ink flow path 32 that begins to arrive through inkwell 3, secondary manifold 5a, micropore 12 and balancing gate pit 10 ink jet exit 8 from ink container.
And as what seen in 7, go up at various height with micropore 12 designs balancing gate pit 10.Like this, as shown in Figure 6, corresponding to be positioned at performance element 21 below the channel unit 4 in ink ejection zone, can be arranged to the micropore 12 that is communicated with a balancing gate pit 10 and the balancing gate pit 10 that is close to described balancing gate pit to see in the plane be on the same position.As a result, because therefore fluid-tight engagement and arranged in high density mutually between the balancing gate pit 10 can be utilized to take than the ink gun 1 of small size and realize the more image printing of fine definition.
In Fig. 5 and plane shown in Figure 6, the both direction of the direction (second order direction) that balancing gate pit 10 tilts a little at the length direction (first order direction) of ink gun 1 with from the width of ink gun 1 is arranged in the ink ejection zone.First order direction and second order direction form the angle θ that is slightly less than the right angle.Ink jet exit 8 is arranged with 50dpi on the first order direction.On the one hand, arrange on second direction balancing gate pit 10, makes the ink ejection zone of a corresponding performance element 21 contain 12 balancing gate pits.Therefore, be separated by in the whole width of ink gun 1 and have 12 ink jet exits 8 in the scope of distance between adjacent two ink jet exits 8 on the first order direction.And, the two ends (hypotenuse that is equivalent to performance element 21) of the first order direction in each ink ejection zone, by making and constituting complementary relationship, satisfy above-mentioned condition corresponding to ink ejection zone facing to other performance elements 21 on the width of ink gun 1.Therefore, in the ink gun 1 according to present embodiment, be accompanied by the relative motion to the width paper of ink gun 1, a plurality of ink jet exits 8 of arranging from first and second directions spray ink in turn, can print with 600dpi on main scanning direction.
Below, with reference to the structure of figure 8 detailed description channel units 8.Fig. 8 is the ideograph that the position relation between balancing gate pit 10, ink jet exit 8 and micropore (limiting flowing path) 12 threes is shown.As shown in Figure 8, balancing gate pit 10 on the first order direction with decided at interval that 500dpi is arranged in row.12 row are arranged in being listed in of such balancing gate pit 10 on the second order direction, all balancing gate pits 10 are two-dimensional arrangements in the ink ejection zone corresponding to a performance element 21.
Balancing gate pit 10 have nozzle be connected upside among Fig. 8 acute angle part the 10a of balancing gate pit and be connected two kinds of the 10b of balancing gate pit of the acute angle part of downside.A plurality of 10a of balancing gate pit and a plurality of 10b of balancing gate pit form the row 11a of balancing gate pit, the 11b that arranges jointly respectively on the first order direction.As shown in Figure 8, in the ink ejection zone corresponding to a performance element 21, the two row row 11a of balancing gate pit arrange in turn from the downside of Fig. 8, arrange the two row 11b of balancing gate pit at its upside of vicinity.One group of balancing gate pit's row group that the common 4 row balancing gate pit row of forming of such two row row 11a of balancing gate pit and the two row row 11b of balancing gate pit are formed begins 3 times from downside and back and forth arranges in the ink ejection zone corresponding to a performance element 21.The straight line that connects the upside acute angle part of each balancing gate pit among the row 11a of each balancing gate pit, the 11b intersects with the downside hypotenuse that described balancing gate pit is listed as each balancing gate pit from the adjacent pressure chambers row that upside begins.
As mentioned above, facing to Fig. 8 paper from vertical direction, the nozzle that connects by handle and balancing gate pit 10 the first different row 11a of balancing gate pit of position is set and per two row of the second row 11b of balancing gate pit are adjacent to arrange all balancing gate pit's 10 rules and proper alignment.On the one hand, nozzle is concentrated and to be arranged in described 4 row balancing gate pits row and to do in one group the middle section of balancing gate pit's row group.Therefore, as mentioned above, 4 row balancing gate pits classify one group as, beginning repetition from downside is arranged in for 3 times under the situation of balancing gate pit's row group, in the boundary vicinity zone of balancing gate pit's row group and group, promptly be listed as the both sides of the group of forming in 4 such row balancing gate pits, form the zone that does not have nozzle.Therefore, extend the thick thick secondary manifold 5a that is provided for providing ink herein to each balancing gate pit 10.In the present embodiment, in ink ejection zone corresponding to a performance element 21, be provided with 1, between the balancing gate pit of lower side row group and second balancing gate pit's row group, be provided with 1, be provided with two along first order direction downside in the drawings, 4 thick secondary manifold 5a are set altogether in the both sides of the balancing gate pit of top side row group.
As shown in Figure 8, with the nozzle that is communicated with of ink jet exit 8 of ejection ink on the first order direction, corresponding to the equidistant arrangement of the balancing gate pit 10 of rule and proper alignment on described direction with 50dpi.And, become on the second order direction that the θ angle intersects 12 balancing gate pit's 10 rules and proper alignment different with the first order direction, 12 nozzles corresponding with this 12 balancing gate pits 10 as mentioned above, that have be communicated with upside acute angle part balancing gate pit 10, that have being communicated with acute angle part downside, is not to arrange with a determining deviation regularly on the second order direction.
On the other hand, nozzle usually with situation that the acute angle part of the same side of balancing gate pit 10 is communicated with under, also arrangement at certain intervals regularly on the second order direction of nozzle.That is, in this case, nozzle arrangement is become, balancing gate pit's row of every from bottom to top raising from figure are every the interval displacement that is equivalent to the definition 600dpi when the first order direction is printed.Corresponding, in this ink gun, 2 row row 11a of balancing gate pit and the 2 row row 11b of balancing gate pit combinations are formed one group by 4 row balancing gate pit row, repeat 3 times from downside and arrange, therefore the displacement of nozzle location on the first order direction of balancing gate pit's row of every from bottom to top in the drawings raising is different usually.
In ink gun 1, the width on the first order direction is equivalent to 50dpi (about 508.0 μ m), considers at the upwardly extending belt-like zone R in the side vertical with described first order direction.In described belt-like zone R, all only there is a nozzle for any row in the 12 row balancing gate pit row.That is, corresponding to the optional position in the ink ejection zone of a performance element 21, under the situation of dividing such belt-like zone R, 12 nozzles usually distribute in this belt-like zone R.Therefore, the position of each subpoint on the upwardly extending straight line in first order side in described 12 nozzles, the interval of the definition 600dpi when being equivalent to print separates.
12 nozzles that belong to a belt-like zone R in the position of projection on the upwardly extending straight line in first order side from the beginning on the left side in turn these 12 nozzle mark during for (1) to (12), these 12 nozzles are arranged according to the order of (1), (7), (2), (8), (5), (11), (6), (12), (9), (3), (10), (4) from following beginning.
In the ink gun 1 that constitutes like this,, can describe literal that definition is 600dpi and image etc. if suitably drive active layer in the performance element 21.That is, drive the active layer that is listed as corresponding to 12 balancing gate pits that are listed as, can on print media, print specific literal and figure by select progressively when transporting print media.
For example, the situation that is printed on the upwardly extending straight line in first order side with the 600dpi definition is described.At first, simply nozzle is described with the situation that the acute angle part of the same side of balancing gate pit 10 is communicated with.In this case, corresponding to transporting print media, begin to spray ink, select to belong to the nozzle ejection ink of the balancing gate pit's row that close on upside in turn from the nozzle of balancing gate pit's row of being arranged in the lower position of Fig. 8.Like this, ink dot interval with 600dpi on the first order direction abuts to form.At last, integral body is depicted in the upwardly extending straight line in first order side with the 600dpi definition.
On the one hand, in the present embodiment, begin to spray ink, be accompanied by and transport print media, select the nozzle that is communicated with the balancing gate pit of closing on upside, ejection ink in turn from the nozzle of the row 11a of balancing gate pit that is arranged in the lower position of Fig. 8.At this moment, because the displacement of nozzle location on the first order direction of 1 balancing gate pit's row of every raising from bottom to top is different usually, therefore is accompanied by and transports print media, the ink dot that forms in turn along the first order direction is not equidistantly to arrange at interval with 600dpi.
That is, as shown in Figure 8, corresponding to transporting print media, at first with nozzle (1) the ejection ink that is communicated with of the row 11a of balancing gate pit of below from figure, interval (about 508.0 μ m) formation ink dot to be equivalent to 500dpi on print media.Then, be accompanied by and transport print media, arrive position with the nozzle (7) that is communicated with from several second row 11a of balancing gate pit down, spray ink from this nozzle (7) if straight line forms the position.Like this, the displaced position (the about 254.0 μ m of about 42.3 μ m * 6=) on 6 times the first order direction that is equivalent to 600dpi interval (about 42.3 μ m) apart from the dot positions that begins to form is gone up and is formed second ink dot.
Then, be accompanied by and transport print media, arrive position with the nozzle (2) that is communicated with from several the 3rd row 11b of balancing gate pit down, spray ink from this nozzle (2) if straight line forms the position.Like this, on the displaced position on the first order direction that is equivalent to 600dpi interval (about 42.3 μ m) apart from the dot positions that begins to form, form the 3rd ink dot.Then, be accompanied by and transport print media, arrive position with the nozzle (8) that is communicated with from several the 4th row 11b of balancing gate pit down, spray ink from this nozzle (8) if straight line forms the position.Like this, the displaced position (the about 296.3 μ m of about 42.3 μ m * 7=) on 7 times the first order direction that is equivalent to 600dpi interval (about 42.3 μ m) apart from the dot positions that begins to form is gone up and is formed the 4th ink dot.Further, be accompanied by and transport print media, arrive position with the nozzle (5) that is communicated with from several the 5th row 11a of balancing gate pit down, spray ink from this nozzle (5) if straight line forms the position.Like this, the displaced position (the about 169.3 μ m of about 42.3 μ m * 4=) on 4 times the first order direction that is equivalent to 600dpi interval (about 42.3 μ m) apart from the dot positions that begins to form is gone up and is formed the 5th ink dot.
Below identical, select in turn and be arranged in the nozzle that figure balancing gate pit 10 from bottom to top is communicated with, form ink dot simultaneously.At this moment, if the sequence number of the nozzle shown in Fig. 8 is N, only, begin to form ink dot in the position of first order direction top offset from beginning to form ink dot to be equivalent to the amount of (multiplying power n=N-1) * (being equivalent to 600dpi at interval).Selected at last after 12 nozzles, between the ink dot that forms with the interval (about 508.0 μ m) that is equivalent to 50dpi by the nozzle (1) among the nethermost row 11a of balancing gate pit among the figure every the interval that is equivalent to 600dpi (about 42.3 μ m), 12 ink dots that form connect, and definition that all can 600dpi is depicted in the upwardly extending straight line in first order side.
Below, the cross-sectional configuration according to the ink gun 1 of present embodiment is described.Fig. 9 is the partial, exploded perspective view of the ink gun main body 1a shown in Fig. 4.Figure 10 is from laterally seeing the enlarged drawing of the single-point line scope of surrounding shown in Fig. 7; Shown in Fig. 7 and 9, the major part of the bottom of ink gun 1 has stepped construction, amounts to 10 blocks of sheet materials from last beginning by performance element 21, cavity plate 22, substrate 23, microwell plate 24, supply plate 25, manifold plate 26,27,28, cover plate 29 and nozzle plate 30 and is laminated.Wherein, constitute channel unit 4 by 9 blocks of plates except performance element 21.
As the back is described in detail, performance element 21 is by stacked formation of 5 piezoelectric patches 41～45 (with reference to Figure 10), and by electrode is set, wherein only the superiors and the adjacent therewith second layer have the part that becomes active layer when applying electric field (below, be recited as " layer " simply with active layer), all the other 2 layers are made of non-active layer (non-active layer).Cavity plate 22 is the metallic plates that are provided with a plurality of openings that roughly assume diamond in shape corresponding to balancing gate pit 10.Substrate 23 is balancing gate pits 10 for cavity plate 22, company's micropore of balancing gate pit 10 and micropore 12 is set and 10 metallic plates to company's micropore of ink jet exit 8 from the balancing gate pit respectively.Microwell plate 24 is balancing gate pits 10 for cavity plate 22, and the metallic plate of company's micropore of 8 is set respectively from the balancing gate pit outside the micropore 12 10 to ink jet exit.Supply with plate 25 and be a balancing gate pit 10, company's micropore of micropore 12 and secondary manifold 5a is set and 10 metallic plates respectively to company's micropore of ink jet exit 8 from the balancing gate pit for cavity plate 22.Manifold plate the 26,27, the 28th outside secondary manifold 5a, for a balancing gate pit 10 of cavity plate 22, is provided with from the balancing gate pit 10 metallic plates to company's micropore of ink jet exit 8 respectively.Cover plate 29 is balancing gate pits 10 for cavity plate 22, and 10 metallic plates to company's micropore of ink jet exit 8 are set respectively from the balancing gate pit.Nozzle plate 30 is balancing gate pits 10 for cavity plate 22, be provided with respectively nozzle function the metallic plate of the thin ink jet exit 8 of front end.
In order to form ink flow path 32 as shown in Figure 7, described 10 blocks of plates, 21～30 mutual position alignment are stacked.Described ink flow path 32 from secondary manifold 5a begin at first upward to, from then on horizontal-extending in micropore 12 makes progress again, horizontal-extending once more in balancing gate pit 10, from then on the direction of temporarily leaving from micropore 12 becomes towards oblique below, then vertically downward towards nozzle 8.
As shown in figure 10, performance element 21 comprises 5 piezoelectric patches 41,42,43,44,45 that 4 thickness are 15 μ m, form with same form.These piezoelectric patches 41～45 are made of towards shape flat board (flat layer continuously) continuous layer, and the ink that layered flat board is arranged to cross in the ink gun 1 sprays a plurality of balancing gate pits 10 that form in the zone.Because piezoelectric patches 41～45 is arranged to cross over a plurality of balancing gate pits 10 as continuous flat layer, therefore for example can utilize silk screen printing technique arranged in high density individual electrode 35a, 35b.Therefore, also can be on the position corresponding with individual electrode 35a, 35b arranged in high density balancing gate pit 10, can realize that high-definition image prints.Piezoelectric patches 41～45th is by lead zirconate titanate (PZT) the series ceramic material formation of ferroele ctric.
At the piezoelectric patches 41 of the superiors with and to accompany the thickness that is formed on whole between the adjacent piezoelectric patches 42 below it be the common electrode 34a of 2 μ m.Equally, close on piezoelectric patches 42 lower floors piezoelectric patches 43 and with its following adjacent piezoelectric patches 44 between the thickness that also accompanies with the identical formation of common electrode 34a be the common electrode 34b of 2 μ m.And, on piezoelectric patches 41, it is the individual electrode 35a of 1 μ m that each balancing gate pit 10 is formed thickness, the flat shape of described individual electrode 35a and balancing gate pit 10 are similar, and (length is 850 μ m, wide is 250 μ m), and the view field on stacked direction is included in (with reference to Figure 10) in the balancing gate pit.And the thickness that accompanies between piezoelectric patches 42 and piezoelectric patches 43 with the identical formation of common electrode 34a is the individual electrode 35b of 2 μ m.On the one hand, the piezoelectric patches below closing on piezoelectric patches 43 44 and and below it between the adjacent piezoelectric patches 45 and piezoelectric patches 45 below electrode is not set.Electrode 34a, 34b, 35a, 35b are made of metal materials such as Ag-Pd systems.
Ground connection in the not shown in the drawings zone of common electrode 34a, 34b.Like this, common electrode 34a, 34b keep earthing potential without exception in corresponding to the zone of all balancing gate pits 10.And, in order to control current potential corresponding to each balancing gate pit 10, individual electrode 35a, 35b with contact for the lead (not shown)s of arranging in each individual electrode 35 independent F PC 136, be connected on the drive IC 132 by described lead.At this moment, paired up and down individual electrode 35a, 35b also can be connected on the drive IC 132 by same lead each other.And, common electrode 34a, 34b also can form the big common electrode in a plurality of specific pressures chamber 10 for each balancing gate pit 10, make the view field on stacked direction contain the zone, balancing gate pit, perhaps form a little little common electrode in a plurality of specific pressures chamber 10 for each balancing gate pit 10, view field is included in the zone, balancing gate pit, needs not to be 1 conductive plate that on whole plate, forms.Just this moment, common electrode is electrically connected to each other, so that all be same current potential corresponding to the part of balancing gate pit 10.
In ink gun 1, the polarised direction of piezoelectric patches 41～45 is its thickness direction.That is, as the layer with active layer, and 2 of downside one side of balancing gate pit 10 (promptly near) constitute so-called single surface wave type as non-active layer piezoelectric patches 44,45 to performance element 21 by 3 piezoelectric patches 41～43 of upside one side of balancing gate pit 10 (promptly away from).Therefore, if individual electrode 35a, 35b for the regulation just or negative potential, electric field and being polarized on the same direction for example, played active layer (pressure generating unit) by the voltage segment that applies of electrode clamping in the piezoelectric patches 41～43, because the piezoelectricity transversal effect shrinks on the direction vertical with polarised direction.On the one hand, piezoelectric patches 44,45 is not subjected to electric field effects, unautogenous contraction produces modified difference between the piezoelectric patches 41～43 on upper strata and the piezoelectric patches of lower floor 44,45 on the direction vertical with polarised direction, all piezoelectric patches 41～45 is to non-active layer one side bulging deformation (single areal deformation).At this moment, as shown in figure 10, owing to be fixed on the upper surface in the next door (cavity plate) 22 of dividing the balancing gate pit below the piezoelectric patches 41～45, piezoelectric patches 41～45 is to balancing gate pit's one side bulging deformation as a result.Therefore, the volume of balancing gate pit 10 reduces, and ink pressure raises, from ink jet exit 8 ejection inks.Then, if individual electrode 35a, 35b turn back to the current potential identical with common electrode 34a, 34b, piezoelectric patches 41～45 becomes original shape, and the volume of balancing gate pit 10 returns original volume, sucks ink from manifold 5 one sides.
And, as another driving method, make individual electrode 35a, 34b be in the current potential different in advance with common electrode 34a, 34b, when requiring to spray ink, in case make individual electrode 35a, 35b become the current potential identical with common electrode 34a, 34b, then just can with the fixed moment make individual electrode 35a, 35b be in the current potential different once more with common electrode 34a, 34b.Become moment with common electrode 34a, 34b same potential in this situation by individual electrode 35a, 35b, piezoelectric patches 41～45 returns original shape, the volumetric ratio A-stage of balancing gate pit 10 (the current potential differences of two electrodes) increases to some extent, and ink is sucked in the balancing gate pit 10 from manifold 5 one sides.Then, make individual electrode 35a, 35b become moment with common electrode 34a, 34b different potentials once more, piezoelectric patches 41～45 protrudes distortion to balancing gate pit's 10 1 sides, and by reducing the volume of balancing gate pit 10, ink pressure improves, the ejection ink.
And, if the direction of an electric field that is applied on the piezoelectric patches 41～45 is opposite with its polarised direction, because the piezoelectricity transversal effect, on the direction vertical, extend with polarised direction by the active layer in the piezoelectric patches 41,42 of individual electrode 35a, 35b and common electrode 34a, 34b clamping.Therefore, piezoelectric patches 41～45 is to balancing gate pit's one side depressed deformation.Therefore, the volume of balancing gate pit 10 increases, and sucks ink from manifold 5 one sides.Then, if the current potential of individual electrode 35a, 35b returns original current potential, piezoelectric patches 41～45 becomes writing board shape, because the volume of balancing gate pit 10 returns original volume, from ink jet exit 8 ejection inks.
Below, the manufacture method according to the ink gun 1 of present embodiment is described.
When making ink gun 1, make channel unit 4 and performance element 21 at first respectively separately, then the two joint.When making channel unit 4, the photoresist with composition on each plate 22～30 that constitutes channel unit 4 carries out etching as mask, forms as Fig. 7 and peristome shown in Figure 9 on each plate 22～30 respectively.Then,, make 9 blocks of plates, 22～30 usefulness adhesives bonding and superimposed, make channel unit 4 in order to form ink flow path 32.
On the one hand, when making performance element 21, at first on the raw material plate of the ceramic material that constitutes piezoelectric patches 43, print the conductive paste figure that constitutes individual electrode 35b, on the raw material plate of the ceramic material that constitutes piezoelectric patches 42,44, print the conductive paste figure that constitutes common electrode 34a, 34b simultaneously.Then, utilize anchor clamps to make 5 raw material plate location aligned with each other of formation piezoelectric patches 41～45 also superimposed, under institute's fixed temperature, burn till the sandwich that is obtained.Then, on the piezoelectric patches 41 of the sandwich that burns till, form individual electrode 35a.For example, individual electrode 35a can electroplate conducting film on whole of piezoelectric patches 41, remove part not by the laser composition, perhaps use the mask that has opening in part, form by evaporation conducting film on piezoelectric patches 41 such as PVD (physical vapor deposition) corresponding to individual electrode 35a.Finish the making of performance element 21 by these technologies.
Then, utilize adhesive that the formation performance element of making as mentioned above 21 is bonded on the channel unit 4, piezoelectric patches 45 is contacted with cavity plate 22.At this moment, according on the surface of the cavity plate 22 of channel unit 4 and the mark that is used to locate that forms respectively on the surface of piezoelectric patches 41 bonding the two.
Then, formation is the connection individual electrode 35a of overlapping correspondence and the micropore of individual electrode 35b up and down, further imbeds conductive material in described micropore.Then, in order to provide the signal of telecommunication to individual electrode 35a, 35b and common electrode 34a, 34b, logical refined lead electrode holder FPC 136 be connected electrically in performance element 21 on the bonding station of individual electrode 35a on, and the bonding manufacturing of further finishing ink gun 1 through the technology of regulation.
Like this, owing to have only individual electrode 35a different with other electrodes, do not burn till with the ceramic material that constitutes piezoelectric patches 41～45, because individual electrode 35a exposes, when burning till, be evaporated easily because of the high temperature heating, compare with other electrodes 34a, 34b, the 35b that are covered by ceramic material, its thickness is difficult to control., because how many other electrodes 34a, 34b, 35b thickness when burning till also can reduce, if therefore consider to keep continuity after burning till, its thickness is difficult to attenuation.On the one hand, because individual electrode 35a forms by said method burning till the back, therefore can form more thinner than other electrodes 34a, 34b, 35b.Like this, in ink gun 1, because it is thinner than other electrodes 34a, 34b, 35b to be positioned at the individual electrode 35a of the superiors, therefore, contain the displacement of the piezoelectric patches 41～43 of active layer easily by individual electrode 35a restriction, improve the efficient (electrical efficiency and area efficiency) of performance element 21.
Owing to contain the piezoelectric patches 41～43 of active layer in the ink gun 1 and use identical materials to form as the piezoelectric patches 44,45 of non-active layer, therefore do not need the time of alternate material, can make by fairly simple manufacturing process.Therefore, can expect to reduce manufacturing cost.And, owing to contain the piezoelectric patches 41～43 of active layer and in fact all have same thickness, can pass through simplified manufacturing technique as the piezoelectric patches 44,45 of non-active layer, realize the reduction manufacturing cost.Because can when the ceramic material of the stacked formation piezoelectric patches of coating, carry out the thickness adjusting process simply.
And in the ink gun 1 according to present embodiment, a plurality of performance elements 21 of cutting apart in each ink ejection zone are arranged along its length direction to be bonded in the state on the channel unit 4.Like this, can make because moulding such as sintering are easy to generate each performance element 21 and channel unit 4 location of the positional precision deviation of dimensional accuracy deviation and individual electrode 35a, 35b, even the ink gun 1 elongated position offset that also can suppress between each performance element 21 and the channel unit 4 increases, the two can be located more accurately.Therefore, even, can obtain good ink discharge performance, can significantly improve the fabrication yield of ink gun 1 simultaneously for also departing from institute's allocation seldom significantly with respect to the position of balancing gate pit 10 from the distant individual electrode 35a of mark, 35b.On the other hand, in contrast, if performance element 21 forms the length shapes identical with channel unit 4, in the plan view when overlapping performance element 21 on the channel unit 4 individual electrode 35a, 35b with respect to the position of each balancing gate pit 10 apart from the side-play amount of assigned position along with far away more big more from mark, the ink discharge performance of the balancing gate pit 10 that range mark is distant degenerates, the homogeneity of the ink discharge performance of forfeiture ink gun 1.
And, clamp piezoelectric patches 41～43 according to the ink gun 1 that as above constitutes by common electrode 34a, 34b and individual electrode 35a, 35b, can utilize piezo-electric effect to make the volume-variation of balancing gate pit 10 easily.And owing to contain the piezoelectric patches 41～43rd of active layer, continuous flat layer can easily be made.
And the performance element 21 of ink gun 1 is piezoelectric patches 44, the 45 formation non-active layers near balancing gate pit 10, contains single surface wave structures of the layer of active layer away from piezoelectric patches 41～43 conducts of balancing gate pit 10.Therefore, can utilize the piezoelectricity transversal effect that the volume-variation amount of balancing gate pit 10 is increased, with balancing gate pit's 10 1 sides to contain the layer of active layer, an opposite side be non-active layer ink gun relatively, can realize being applied to voltage low pressureization and/or balancing gate pit's 10 Highgrade integrations on individual electrode 35a, the 35b.By realizing applying voltage low pressureization, can realize driving the driver miniaturization of individual electrode 35a, 35b, can reduce cost, can dwindle balancing gate pit 10, even realize its Highgrade integration, also can spray the ink of abundant amount, realize ink gun 1 miniaturization and print point arranged in high density.
And, each performance element 21 of ink gun main body 1 has trapezoidal shape in fact, the parallel opposite side of each performance element 21 is along the length direction of channel unit 4, and a plurality of performance element 21 interconnected one-tenth 2 row, the hypotenuse of adjacent performance element 21 is overlapped each other on the width of channel unit 4 each other.Like this, because the hypotenuse of adjacent performance element 21 overlaps each other, when ink gun 1 relatively moves on respect to the width of print media at it, the balancing gate pit 10 that is present on the width of channel unit 4 can replenish, the realization fine definition is printed, and can make very narrow small-sized ink gun 1.
And, because a plurality of balancing gate pits 10 adjacent to each other are matrix configuration in the channel unit 4, therefore can be in smaller zone a plurality of balancing gate pits 10 of arranged in high density.
And in above-mentioned ink gun 1, though the interconnected one-tenth of trapezoidal a plurality of performance elements 2 row, it is trapezoidal also passable that performance element needs not to be, and it is also passable that a plurality of performance elements are arranged in 1 row along the length direction of channel unit.Perhaps, also passable more than interconnected one-tenth 3 row of performance element.
Below, the second embodiment of the present invention is described.Figure 11 is the plane according to the ink gun main body of present embodiment.And, in ink gun and ink-jet printer,, therefore omit detailed description here because the part beyond the ink gun main body is similar with above-mentioned first embodiment according to this embodiment.
As shown in figure 11, the ink gun main body 201 according to the ink gun of present embodiment constitutes along the rectangular flat shape of a direction (main scanning direction).Ink gun main body 201 has the channel unit 204 of a plurality of balancing gate pit 210 described later and ink jet exit 208 formation, having 2 parallelogram performance elements 221 (the representing with label 221a of right side among Figure 11, left side represent with label 221b) above it engages side by side.One side B of each performance element 221 is along the length direction configuration of ink gun main body 201.The hypotenuse C configuration near each other of adjacent performance element 221, and with the width of ink gun main body 201 (direction that length is short) consistent state.Offer ink supply port 202 at channel unit 4 upper surfaces, described ink supply port 202 is connected to the providing ink source by not shown path.
As from seeing 201 of ink gun main bodys in the opposite side of Figure 11 (printing surface one side) as shown in figure 12, the lower surface of channel unit 4 corresponding to the zone that performance element 221 is set in, design has the ink ejection region R 1 of 2 parallelogram.On the surface of described ink ejection region R 1, be arranged with the ink jet exit 208 of a plurality of micro-apertures.
Present embodiment shows the monochromatic situation about printing of carrying out, and provides monochromatic (for example black) ink to ink supply port 202.And, carrying out the structure of colour print as long as be set up in parallel number on the width of described channel unit is that the color number is (for example if yellow, cyan, magenta, black four looks, be exactly four ink gun main bodys 201) ink gun main body 201, supply with on one side the ink of the color that has nothing in common with each other to each ink gun main body 201, print and just can realize colour print on one side.
Figure 13 illustrates the sectional view of the internal structure of channel unit 204.As shown in figure 13, channel unit 204 inside are formed with manifold stream 205, and this manifold stream 205 is communicated with the providing ink source by ink supply port 202, the result, and manifold stream 205 is full of ink usually.And, be preferably in the ink supply port 202 filter is set, the dust that the filtering ink contains etc.
Each ink jet exit 208 forms the thin nozzle of front end as shown in figure 15, by the flat shape roughly balancing gate pit 210 and the micropore 212 of parallelogram shape, is communicated with manifold stream 205.By this structure, ink passes through micropore supply pressure chambers 210 212 from manifold stream 205.Then,, apply the injection energy for the ink in the balancing gate pit 210, from ink jet exit 208 ejection inks by driving performance element 221 described later.
The detailed structure in zone shown in the label Q is shown in Figure 14 among Figure 13.As what from Figure 14, seen, in the scope corresponding to ink ejection region R 1 on channel unit 204, a plurality of balancing gate pit 210 is adjacent to each other be configured to rectangular.And, as shown in figure 15, to go up at various height with micropore 212 settings owing to constitute balancing gate pit 210, the micropore 212 that therefore connects a balancing gate pit 210 repeats with another balancing gate pit 210, therefore can be configured to as shown in figure 14.As a result, can realize arranged in high density balancing gate pit 210, and can realize 201 miniaturizations of ink gun main body and form visual fine definition.
Begin to reach from manifold stream 205 ink jet exit 208 the path concrete structure as shown in figure 15, the channel unit 204 shown in this figure is by cavity plate 222, substrate 223, microwell plate 224, supplies with plate 225, manifold plate 226,227,228, cover plate 229, nozzle plate 230 and amount to 9 blocks of sheet materials and be laminated.Therefore, above-mentioned performance element 221 is bonded on above the channel unit 204, constitutes ink gun main body 201.The detailed structure of performance element 221 is described in the back.
The parallelogram shape opening that is provided with on the cavity plate 222 constitutes above-mentioned balancing gate pit 210, on the one hand, forms the thin ink jet exit 208 of front end by punching press on nozzle plate 230.Be through with each respectively on the plate 223～229 of clamping between two plates 222,230 and connect micropore 251, balancing gate pit 210 connects micropore 251 with ink jet exit 208 by these and is connected.Microwell plate 224 is provided with the micropore 212 of long hole shape.One end of these micropores 212 is connected with the end (with the opposition side end of ink jet exit 208 connections one side) of balancing gate pit 210 by the company's micropore 252 that forms on substrate 223.Micropore 212 is suitably adjusted the quantity of ink of supply pressure chamber 210, works to prevent that the quantity of ink from ink jet exit 208 ejections is excessive or too small.Supplying with the company's of offering micropore 253 on the plate 225, be connected with manifold stream 205 with the other end of micropore 212.
Any one in 9 blocks of plates 222～230 of formation channel unit 204 all is metal, uses mask graph, selects etching formation balancing gate pit 210, micropore 212 and connect micropore 251,252,253 on each metallic plate.Then, 9 blocks of plates 222～230 are aligned with each other location and stacked bonding formation stream shown in Figure 15.
As shown in figure 16, performance element 221 has the piezoelectric patches 241～245 that 5 thickness are 15 μ m, form with same form.These piezoelectric patches 241～245th, continuous flat layer, performance element 221 are arranged to cross over a plurality of balancing gate pits 210 of formation in the ink ejection region R 1 in ink gun main body 201.Therefore, can be in performance element 221 arranged in high density individual electrode 235a, 235b.The material of piezoelectric patches 241～245 uses lead zirconate titanate (PZT) series ceramic material with forceful electric power Jie property.
Be the common electrode 234a of 2 μ m from accompanying the thickness that is formed on whole between number ground floor and two piezoelectric patches of the second layer 241,242.Equally, also accompany the common electrode 234b that thickness is 2 μ m between the 3rd layer and the 4th layer of piezoelectric patches 243,244.On ground floor piezoelectric patches 241, it is the individual electrode 235a of 1 μ m that each balancing gate pit 210 is formed thickness, the flat shape of individual electrode 235a as shown in figure 14, keep roughly similar to the shape of balancing gate pit 210, and dwindle a little, and it is roughly consistent with the center of balancing gate pit 210 to be arranged to its center.And also accompanying between the second layer and the 3rd layer of piezoelectric patches 243,244 and forming the thickness identical with individual electrode 235a is the individual electrode 235b of 2 μ m.The part of these individual electrode 235a, 235b configuration is equivalent to the pressure generating unit A that the ink in balancing gate pit 210 is exerted pressure.And, between the 4th layer and the layer 5 piezoelectric patches 244,245 and the following electrode that is not provided with of layer 5 piezoelectric patches 245.These electrodes 234a, 234b, 235a, 235b are made of metal materials such as Ag-Pd systems.
Because ground connection in the not shown in the drawings zone of common electrode 234a, 234b, common electrode 234a, 234b are corresponding to keeping earthing potential in the zone of all balancing gate pits 210 without exception.In order independently to control the current potential corresponding to each balancing gate pit 210, individual electrode 235a, 235b are connected on the suitable drive IC by for each individual electrode 235a, 235b lead independently.
In ink gun main body 201, the polarised direction of piezoelectric patches 241～245 is its thickness direction.Promptly, performance element 221 by 3 piezoelectric patches 241～243 of upside (side promptly far away) apart from balancing gate pit 210 as the layer that contains active layer, and 2 piezoelectric patches 244,245 of downside (promptly near apart from balancing gate pit 210 side) constitute so-called single surface wave type as non-active layer.
In this structure, if individual electrode 235a, 235b for regulation just or negative potential, electric field and being polarized on the same direction for example, in the piezoelectric patches 241～243 by the part of electrode clamping (active layer, be the pressure generating unit), on the direction vertical, shrink with polarised direction.On the one hand, because non-active layer piezoelectric patches 244,245 is not subjected to electric field effects, unautogenous contraction.As a result, produce the poor of distortion between the piezoelectric patches 241～243 on upper strata and the piezoelectric patches of lower floor 244,245 on polarised direction, all piezoelectric patches 241～245 is to non-active layer one side bulging deformation (single areal deformation).Because the lower surface of undermost piezoelectric patches 245 is fixed on the next door upper surface that a plurality of balancing gate pits 210 are separated each other, the pressure generating unit A part of piezoelectric patches 241～245 is to balancing gate pit's 210 1 side bulging deformations, and the volume of balancing gate pit 210 reduces.As a result, ink pressure raises, from ink jet exit 208 ejection inks.Then, if stop to apply driving voltage to individual electrode 235a, 235b, piezoelectric patches 241～245 becomes original shape, and the volume of balancing gate pit 210 returns original volume, sucks ink from manifold stream 205.
Below, the shape of two performance element 221a and the configuration of individual electrode 235a, 235b (in other words being the configuration of pressure generating unit A) are described.Figure 17 illustrates the shape of performance element 221a and the figure of pressure generating unit configuration.Figure 18 illustrates performance element 221a and performance element 221b seam portion and append the figure that concerns between the pressure generating unit in the zone each other.
As previously mentioned, though have two performance element 221a and performance element 221b in ink gun main body 201, among two performance element 221a and the 221b, the configuration of its shape and pressure generating unit A is identical.
As Figure 11 and shown in Figure 17, performance element 221a forms parallelogram shape, is arranged on the channel unit 204, makes its one side B parallel with the length direction of channel unit 204, and another side C tilts with respect to the length direction of channel unit 204.Therefore as shown in figure 17, performance element 221a quilt is cut apart on the width of channel unit along the straight line of the length direction of channel unit 204, promptly is set in two regional P1, P2 adjacent on the width of channel unit 204.
In the fundamental region P1 therein, a plurality of pressure generating unit A1 are adjacent to each other, and are rectangular configuration on the another side C direction of the length direction of channel unit 204 and above-mentioned parallelogram.
Therefore, in all the other zones of removing fundamental region P1 (appending regional P2), only near the acute angle part D near the parallelogram shape of performance element 221b one side, A2 is adjoining for the pressure generating unit, is rectangular configuration.
When two performance element 221a, 221b constituting are like this placed side by side configuration as shown in figure 11 on the length direction of channel unit 204, as shown in figure 18, because seaming position between performance element 221a and the performance element 221b, the place of pressure generating unit A (regional G shown in the shade among Figure 18) can not be set in being equivalent to fundamental region P1, and the pressure generating unit A2 that appends regional P2 set among the performance element 221a is positioned at this place.Promptly, because the described pressure generating unit A2 that appends regional P2 is configured to corresponding to the gap portion G between the pressure generating unit A1 of fundamental region P1 set among the pressure generating unit A1 of fundamental region P1 set among the performance element 221a and the adjacent performance element 221b, do not need configuration in addition to be used for to be provided at the ink gun main body 201 that does not have ground, slit to print on the overall flow paths element length direction from the performance element of gap portion G ejection ink.
In other words and since can not be between performance element 221a and performance element 221b in the seam portion near zone (regional G) the pressure generating unit is set, therefore can not balancing gate pit 210 and ink jet exit 208 be set in this part.Therefore, suppose that the part that is equivalent to gap portion G can not be printed in or not set appending under the situation that disposes pressure generating unit A2 in the regional P2 in the performance element 221a, seam portion produces the part that can not spray ink between performance element 221a, 221b., owing to, therefore do not have to spray the part of ink appending configuration pressure generating unit A2 in the regional P2 with the overlapping place of described regional G is set in performance element 221a on the channel unit width.As a result, with respect to paper, can form the image that does not have the slit.
As mentioned above, in the present embodiment, the row of configuration a plurality of pressure generating unit A1, A2 are provided with multiple row in performance element 221 on the length direction of channel unit 204.These length that are listed on the length direction of channel unit 204 are long in the P1 of fundamental region, and are short in appending regional P2.And, consideration is during along the columns of the width of channel unit 204, it is identical to append the columns that is had in columns and the length on the width of corresponding regional G channel unit 204 partly in the regional P2, therefore, if when the width of channel unit 204 is drawn imaginary line, the columns that intersects in the columns of described imaginary line intersection in the overlapped zone of adjacent performance element 221a, 221b and the overlapping region not is identical.
Therefore,, therefore simplify modular construction, can reduce by two performance element 221a, 221b designs, make needed cost and man-hour because structure can realize that two performance element 221a, 221b of same structure are arranged side by side as mentioned above.
And the configuration of the pressure generating unit A in the performance element 221 that illustrates in the present embodiment is an example, also can constitute performance element for example shown in Figure 19 255.Figure 19 is another example of the pressure generating unit configuration of this real performance element.Figure 20 is a seam portion and append the figure that concerns between the pressure generating unit in the zone between the performance element 221 in the configuration of Figure 19.
As shown in figure 19, performance element 255a is provided with three regional P11, P12, the P13 of cutting apart along the channel unit width.Therefore, be the fundamental region with regional P11 in channel unit width central authorities, all the other regional P12, P13 are for appending the zone.
Therefore identical with configuring condition shown in Figure 17, promptly in the P11 of fundamental region, a plurality of pressure generating unit A11 are adjacent to each other, and are rectangular arrangement on the another side C direction of the length direction of channel unit and above-mentioned parallelogram.On the one hand, in appending regional P12, near the acute angle part D near the parallelogram shape of performance element 255b one side, pressure generating unit A12 is contiguous mutually, is matrix configuration.In appending regional P13, near the acute angle part D away from the parallelogram shape of performance element 255b one side, pressure generating unit A13 is contiguous mutually, is rectangular arrangement.
Therefore, as shown in figure 20, the corresponding configuration of gap portion G between the pressure generating unit A11 of set fundamental region P11 among the pressure generating unit A11 that appends fundamental region P11 set among pressure generating unit A13 and the performance element 255a in the regional P13 that appends pressure generating unit A12 in the regional P12 and performance element 255b of performance element 255a and the adjacent performance element 255b.Therefore, can be provided at the ink gun main body 201 that does not have ejection ink in ground, slit on the overall flow paths element length direction.
In addition, according to present embodiment, can obtain identical effect with above-mentioned first embodiment.Specifically, arrange along the length direction of channel unit 204 by two performance element 255a, 255b, even channel unit 204 is elongated, also can hi-Fix between performance element 255a, 255b and the channel unit 204, good ink discharge performance can be obtained, the fabrication yield of ink gun 201 can be significantly improved simultaneously.And, by common electrode 234a, 234b and individual electrode 235a, 235b clamping piezoelectric patches 241～243, can utilize piezo-electric effect easily to change the volume of balancing gate pit 210.And owing to contain the piezoelectric patches 241～243rd of active layer, continuous flat layer can easily be made.And, owing to have the performance element 221 of surface wave structures, with near the piezoelectric patches 244,245 of balancing gate pit 210 as non-active layer, with away from the piezoelectric patches 241～243 of balancing gate pit's 210 1 sides as the layer that contains active layer, therefore can utilize the piezoelectricity transversal effect that the volume-variation amount of balancing gate pit 210 is increased, can realize being applied to voltage low pressureization and/or balancing gate pit's 210 Highgrade integrations on individual electrode 235a, the 235b.And, because mutually contiguous a plurality of balancing gate pits 210 are matrix configuration in the channel unit 204, therefore can be in smaller zone a plurality of balancing gate pits 210 of arranged in high density.
And, constitute two performance elements arranged side by side in the present embodiment, but can certainly use the structure more than 3 arranged side by side.Can make long ink gun side by side by a plurality of, described ink gun have on the large scale paper also can flying print advantage.
In Figure 21 (a) and Figure 21 (b), ink gun main body 271,272 according to variation is shown respectively, and described variation is respectively to be the straight line shape with 4 performance elements 261 (from left to right representing with label 261a, 261b, 261c, 261d respectively) of performance element 221 or performance element 255 same structures near the channel unit 274 that has ink supply port 273 two ends to engage side by side in these figure.Performance element 261 is identical with performance element 221 or performance element 255, since for from the short a little channel unit as shown in figure 11 of length direction to the long channel unit shown in Figure 21 (a), can be shared for the channel unit of different length, therefore the parts versatility improves, and can reduce manufacturing cost.
And shown in Figure 11 and Figure 21 (a), it is arranged side by side point-blank that ink gun main body 201,271 constitutes performance element, and the state configuration consistent with the width of channel unit is in channel unit.Therefore, as the ink gun main body 272 shown in Figure 21 (b), a plurality of performance element 261a, 261b, 261c, 261d are interconnected, and also it doesn't matter.Just, from the viewpoint of ink gun miniaturization, best a plurality of performance elements 261 are neat and consistent on the width of channel unit, are the straight line configuration on the length direction of channel unit, form the structure shown in Figure 11 or Figure 21 (a).Particularly because the structure of Figure 11 or Figure 21 (a) can reduce the width of ink gun, therefore configuration side by side on the width of a plurality of ink guns at it, when the mutually different ink of supply color carries out colour print, can dispose a plurality of ink guns with the space of compactness, even therefore have the advantage of paper inclination also can reducing image color distortion when printing.
Below, the 3rd embodiment of the present invention is described.Figure 22 is the plane according to the ink gun main body of present embodiment.And, in ink gun and ink-jet printer,, therefore omit detailed description here because the part beyond the ink gun main body is similar with above-mentioned first embodiment according to this embodiment.
As shown in figure 22, the ink gun main body 301 according to the ink gun of present embodiment constitutes along a rectangular flat shape of direction.Ink gun main body 301 has the channel unit 304 that a plurality of balancing gate pit 310 described later and ink jet exit 308 forms, and its upper surface has four and roughly is hexagonal performance element 321 (right side is represented with label 321a, 321b, 321c, 321d respectively to the right side from Figure 22) and is staggered to 2 row and joint.Each performance element 321 is configured to, and its parallel opposite side (bottom and upper segment) is along the length direction of ink gun main body 301.Adjacent performance element 321 is arranged in, and its hypotenuse is near each other, and forms lap at the width of channel unit.
Figure 24 illustrates the sectional view of the internal structure of channel unit 304.As shown in figure 24, channel unit 304 inside are formed with a plurality of manifold streams 305 as the providing ink source.Each manifold stream 305 forms opening 305a by channel unit 304 upper surfaces in correspondence and is communicated with inkwell 303.And, be preferably among the opening 305a and be provided with filter, the dust that the filtering ink contains etc.
Therefore, the ink jet exit 308 that is positioned at half zone of channel unit width one side is communicated with by the inkwell 303 of manifold stream 305 with all paired one of them that dispose.And be positioned at ink gun width opposite side half the zone ink jet exit 308 be communicated with another inkwell 303.Like this, by constituting manifold stream 305, opening 305a and inkwell 303, can adopt following two kinds of print states: (1) carries out the state that monochromatic fine definition is printed to the ink of a pair of inkwell 303 supply same colors; (2) supply with the mutually different ink of color to a pair of inkwell 303, the state by an ink gun main body 301 is carried out double-colored printing forms the high structure of versatility.
Each ink jet exit 308 forms the thin nozzle of front end as shown in figure 26, and balancing gate pit 310 and micropore 312 by flat shape roughly assumes diamond in shape are communicated with manifold stream 305.By this structure, ink arrives manifold stream 305 from ink container through inkwell 303, passes through micropore supply pressure chambers 310 312 from described manifold stream 305.Then,, apply the injection energy for the ink in the balancing gate pit 310, from ink jet exit 308 ejection inks by driving performance element 321 described later.
The detailed structure in zone shown in the label E is shown in Figure 25 among Figure 24.As what from Figure 25, seen, in the scope of channel unit 304 upper surfaces corresponding to ink ejection region R 2, a plurality of balancing gate pits 310 matrixes that are configured to adjacent to each other.And, as shown in figure 26, go up at various height with micropore 312 designs owing to constituting balancing gate pit 310, therefore can be configured to connect the micropore 312 and another balancing gate pit's 310 repetitions of a balancing gate pit 310.As a result, can realize arranged in high density balancing gate pit 310, and can realize 301 miniaturizations of ink gun main body and form visual fine definition.
Begin to arrive from manifold stream 305 ink jet exit 308 the path concrete structure as shown in figure 26, the channel unit 304 shown in this figure be by cavity plate 322, substrate 323, microwell plate 324, supplying with plate 325, manifold plate 326,327,328, cover plate 329, nozzle plate 330, to amount to 9 blocks of sheet material stacked and constitute.Therefore, above-mentioned performance element 321 is bonded on channel unit 304 upper surfaces, constitutes ink gun main body 301.The detailed structure of performance element 321 is described in the back.
Any one in 9 blocks of plates 22～30 of formation channel unit 304 all is metal, and balancing gate pit 310, micropore 312 and company's micropore 351,352,353 use mask graphs, forms selecting etching on each metallic plate.Then, 9 blocks of plates 22～30 be aligned with each other the location and stacked joint form stream shown in Figure 26.
Below, the structure of performance element 321 is described.As shown in figure 27, performance element 321 has the piezoelectric patches 341～345 that 5 thickness are 15 μ m, form with same form.These piezoelectric patches 341～345th, continuous flat layer, performance element 321 are configured to cross over a plurality of balancing gate pits 310 of formation in the ink ejection region R 2 in ink gun main body 301.Therefore, can arranged in high density individual electrode 335a, 335b.The material of piezoelectric patches 341～345 uses cobalt titanate lead plumbate (PZT) series ceramic material with forceful electric power Jie property.
Be the common electrode 334a of 2 μ m from accompanying the thickness that is formed on whole between number ground floor and two piezoelectric patches of the second layer 341,342.Equally, also accompany the common electrode 334b that thickness is 2 μ m between the 3rd layer and the 4th layer of piezoelectric patches 343,344.On ground floor piezoelectric patches 341, it is the individual electrode 335a of 1 μ m that each balancing gate pit 310 is formed thickness, the flat shape of individual electrode 335a as shown in figure 14, keep roughly similar to the shape of balancing gate pit 310, and dwindle a little, and it is roughly consistent with the center of balancing gate pit 310 to be arranged to its center.And also accompanying between the second layer and the 3rd layer of piezoelectric patches 343,344 and forming the thickness identical with individual electrode 335a is the individual electrode 335b of 2 μ m.And, between the 4th layer and the layer 5 piezoelectric patches 344,345 and the following electrode that is not provided with of layer 5 piezoelectric patches 345.These electrodes 334a, 334b, 335a, 335b are made of metal materials such as Ag-Pd systems.
Because ground connection in the not shown in the drawings zone of common electrode 334a, 334b, common electrode 334a, 334b are corresponding to keeping earthing potential in the zone of all balancing gate pits 310 without exception.In order independently to control the current potential corresponding to each balancing gate pit 310, individual electrode 335a, 335b are connected on the suitable drive IC (not shown) by for each individual electrode 335a, 335b lead independently.
In ink gun main body 301, the polarised direction of piezoelectric patches 341～345 is its thickness direction.Promptly, performance element 321 by 3 piezoelectric patches 341～343 of upside (side promptly far away) apart from balancing gate pit 310 as the layer that contains active layer, and 2 piezoelectric patches 344,345 of downside (promptly near apart from balancing gate pit 310 side) constitute so-called single surface wave type as non-active layer.
In this structure, if individual electrode 335a, 335b for regulation just or negative potential, electric field and being polarized on the same direction for example, in the piezoelectric patches 341～343 by the part of electrode clamping (active layer, be the pressure generating unit), on the direction vertical, shrink with polarised direction.On the one hand, because non-active layer piezoelectric patches 344,345 is not subjected to electric field effects, unautogenous contraction.As a result, produce the poor of distortion between the piezoelectric patches 341～343 on upper strata and the piezoelectric patches of lower floor 344,345 on the vertical direction of polarised direction, all piezoelectric patches 341～345 are to non-active layer one side bulging deformation (single areal deformation).Because the lower surface of undermost piezoelectric patches 345 is fixed on the next door upper surface that a plurality of balancing gate pits 310 are separated each other, piezoelectric patches 341～345 is to balancing gate pit's 310 1 side bulging deformations, and the volume of balancing gate pit 310 reduces.As a result, ink pressure raises, from ink jet exit 308 ejection inks.Then, if stop to apply driving voltage to individual electrode 335a, 335b, piezoelectric patches 341～345 becomes original shape, and the volume of balancing gate pit 310 returns original volume, sucks ink from manifold stream 305.
When making performance element 321, the raw material plate of the ceramic material of at first stacked formation piezoelectric patches 341～345 also burns till.At this moment, printing curve on the metal material that is constituting individual electrode 335b, common electrode 334a, 334b on the raw material plate of each ceramic material as required.Then, on ground floor piezoelectric patches 341, all electroplate after the metal material that constitutes individual electrode 335a, remove part not by the laser composition, perhaps use the mask that has opening in the part corresponding to individual electrode 335a, evaporation constitutes the metal material of individual electrode 335a on piezoelectric patches 341.
The performance element of making like this 321 is owing to made by pottery, so character is very crisp.Particularly since the bight of performance element 321 damage easily, in order not collide miscellaneous part in the bight that makes it, must very careful operation when requiring to install.
Shown in Figure 28 (a) shown in the plane of performance element 321, form the contour shape that roughly is regular hexagon according to performance element 321 in the ink gun of present embodiment, any one among six roots of sensation straight line portion (limit) L1～L6 of described contour shape becomes about 120 ° to be connected with its adjacent straight line partial L.The result, among the θ 1～θ 6 of six bights of performance element 321 (two adjacent straight line portion L intersections) any one is not acute angle, be not easy to damage, reduce the breakage in the technology of the performance element 321 of making the expensive precise part of conduct, can reduce manufacturing cost.
Above-mentioned effect is not that only to make any one angle among bight θ 1～θ 6 all be that 120 ° structure just realizes, as long as the angle of some bight θ n is more than 90 ° (right angles), just can plays and is difficult for the effect that causes that this bight is damaged.Therefore, in order to constitute the structure that is difficult for causing whole six bights, any one among six roots of sensation straight line portion L1～L6 meets at right angles with its adjacent straight line partial L or the obtuse angle is connected with regard to (minimum of a value among the angle θ 1～θ 6 of coupling part is 90 °) much of that, in satisfying the scope of this condition, hexagonal contour shape can Free Transform.Shown in Figure 28 (b),, the performance element 355 that contour shape satisfies above-mentioned condition is shown as an example.
In addition, according to present embodiment, also can obtain identical effect with above-mentioned first embodiment.Specifically, arrange along the length direction of channel unit 304 by four performance elements 321, even channel unit 304 is elongated, also can hi-Fix between performance element 321 and the channel unit 304, good ink discharge performance can be obtained, the fabrication yield of ink gun 301 can be significantly improved simultaneously.And, by common electrode 334a, 334b and individual electrode 335a, 335b clamping piezoelectric patches 341～343, can utilize piezo-electric effect easily to change the volume of balancing gate pit 310.And owing to contain the piezoelectric patches 341～343rd of active layer, continuous flat layer can easily be made.And, owing to have the performance element 321 of single surface wave structures, with near the piezoelectric patches 344,345 of balancing gate pit 310 as non-active layer, with away from the piezoelectric patches 341～343 of balancing gate pit's 310 1 sides layer as active layer, therefore can utilize the piezoelectricity transversal effect that the volume-variation amount of balancing gate pit 310 is increased, can realize being applied to voltage low pressureization and/or balancing gate pit's 310 Highgrade integrations on individual electrode 335a, the 335b.And, because mutually contiguous a plurality of balancing gate pits 310 are rectangular configuration and arrange in the channel unit 304, therefore can be in smaller zone a plurality of balancing gate pits 310 of arranged in high density.
And in the present invention, the contour shape of performance element is not limited to hexagon.That is, the number of straight line portion L is not limited to the six roots of sensation, and it is also passable to constitute the situation with five or seven or eight or more straight line portioies.Below, with reference to Figure 29 to Figure 31, the variation of the contour shape of performance element is described.And in the variation below, the parts identical with above-mentioned the 3rd embodiment are marked with identical label.
Figure 29 (a) is that performance element is made the ink gun main body plane under the hexagon situation.Figure 29 (b) is the plane of the performance element that comprises in the ink gun main body shown in Figure 29 (a).From these drawings as can be seen, ink gun main body 361 in this variation is except performance element 362 (beginning to represent with label 362a, 362b, 362c, 362d respectively from the right side in Figure 29), and structure is identical with ink gun main body 301 according to the 3rd embodiment.
Can see that from Figure 29 (b) performance element 362 is made the hexagonal contour shape that the angle linearity downcuts the foregoing description.As a result, straight line portion L has seven (L8～L14), the angle θ 8～θ 12 in bight is roughly 120 °, and θ 13, θ 14 are roughly 150 °.
Figure 30 (a) is that performance element is the plane of ink gun main body under the octagonal situation.Figure 30 (b) is the plane of the performance element that comprises in the ink gun main body shown in Figure 30 (a).From these drawings as can be seen, the ink gun main body 371 in this variation is except performance element 372 (beginning to represent with label 372a, 372b, 372c, 372d respectively from the right side in Figure 30), and structure is identical with the ink gun main body 301 of the 3rd embodiment.
Can see that from Figure 30 (b) performance element 372 is made hexagonal two contour shapes that the angle linearity downcuts the foregoing description.As a result, straight line portion L has eight (L15～L22), the angle θ 15 in bight, θ 16, θ 19, θ 20 is roughly 120 °, θ 17, θ 18, θ 21, θ 22, are roughly 150 °.Two modified configuration according to the above description compare with above-mentioned hexagon performance element 321, and the bight of downcutting part becomes big, become 150 °, so this bight is more difficult damaged.
Figure 31 (a) is the plane that forms the ink gun under the situation of circular shape part F in above-mentioned the 3rd embodiment at two places of the junction of the straight line portion L of the mutual vicinity of performance element.Figure 31 (b) is the plane of the performance element that comprises in the ink gun main body shown in Figure 31 (a).From these drawings as can be seen, the ink gun main body 381 in this variation is except performance element 382 (beginning to represent with label 382a, 382b, 382c, 382d respectively from the right side in Figure 31), and structure is identical with the ink gun main body 301 of the 3rd embodiment.
From 31 (b) as can be seen, performance element 382 has six roots of sensation straight line portion L23～L28.And two places of the junction of the straight line portion L of the mutual vicinity of performance element 382 (L23 and L28, L25 and L26) forms circular shape part F, the mutual smooth connection of straight line portion L.Therefore, be not easy very to cause that circular shape part F is damaged.And this moment, one between adjacent straight line partial L is mutual in the angulation (θ 23～θ 27) all greater than 90 ° (being approximately 120 °) owing to contain two straight line portioies that clamping circular shape part F connects.
Below, with reference to Figure 32 the fourth embodiment of the present invention is described.And, in ink gun and ink-jet printer,, therefore omit detailed description here because the part beyond the ink gun main body is similar with above-mentioned first embodiment according to this embodiment.
Ink gun main body 401 shown in Figure 32 is same as the previously described embodiments, have by a plurality of balancing gate pits and the formed channel unit 404 of ink jet exit, its upper surface has 2 parallelogram performance elements 421 (the representing with label 421a of right side among Figure 32, left side represent with label 421b) and engages side by side.One side B of each performance element 421 is along the length direction configuration of ink gun main body 401.The hypotenuse C configuration near each other of adjacent performance element 421, and with the width consistent state of ink gun main body 401.Two performance elements 421 mutually between part overlapping on the width of channel unit 404.Offer ink supply port 402 on channel unit 404, described ink supply port 402 is connected to the providing ink source by not shown path.
Individual electrode and common electrode that performance element 421 upper surfaces are bonded with respectively in performance element 421 provide the FPC 436 that drives signal.The drive IC 432 of the drive circuit of the driving signal that provides as the individual electrode that produces in performance element 421 is provided on each FPC 436.Each FPC 436 is connected electrically on the control module 440 that comprises CPU, RAM and ROM.Control module 440 provides print data to drive IC 432.Drive IC 432 produces the driving signal of individual electrode according to print data.
On performance element 421, be provided with two regional P21, P22.Wherein, fundamental region P21 is each limit parallelogram parallel with each limit of performance element 421, and width is shorter a little than the limit B of performance element 421, and length is approximately 3/4 of limit C, in Figure 32, is arranged on the upper portion in the performance element 421.Appending regional P22 is each limit parallelogram parallel with each limit of performance element 421, and width is identical with fundamental region P21, is arranged on the below of fundamental region P21 in the performance element 421.Appending that regional P22 is divided into is the parallelogram parallel with each limit of performance element 421 zone, two each limits P22a, P22b.The zone P22a width approximately be performance element 421 limit B 1/5, length is approximately 1/5 of limit C, is positioned in Figure 32 near the lower-left acute angle part of performance element 421.The zone P22b width approximately be performance element 421 limit B 3/5, length is approximately 1/5 of limit C, is positioned at the right side of the underside area P22a of performance element 421 in Figure 32.
At fundamental region P21 and append in two regional P22a, the P22b of regional P22, a plurality of pressure generating units are adjacent to each other, along the length direction of channel unit 404 and be configured to rectangular along the another side C direction of above-mentioned parallelogram.Therefore, corresponding to each pressure generating unit, in channel unit 404, form the ink flow path that comprises balancing gate pit and nozzle respectively.
When two performance element 421a, 421b constituting are like this disposed on the length direction of channel unit 404 shown in figure 32 side by side, owing to there is the zone (regional G shown in the shade among Figure 23) that does not have the pressure generating unit between performance element 421a and the performance element 421b near the seaming position, when only considering the pressure generating unit in the P11 of fundamental region, near the seaming position along the pressure generating unit number of the width of channel unit 404 than seaming position near beyond the place lack.
Therefore, in the present embodiment, on the width of regional P22a utilization that appends regional P22 set below the P21 of fundamental region corresponding to channel unit 404, there is not the design of the regional G of pressure generating unit near the seam, when printing, control module 440 control drive IC 432, the interior pressure generating unit work of regional P22a that makes the pressure generating unit in the P21 of fundamental region and append regional P22, and the pressure generating unit in the regional P22b that appends regional P22 is not worked.Like this, since the pressure generating units in the performance element 421 be configured in fact with the identical shaped scope of performance element 221 as shown in figure 18 in, so the number of the pressure generating unit on the width of channel unit 404 is identical with other places near the seam.Promptly, owing to the pressure generating unit A2 of the regional P22a that appends regional P22 disposes corresponding to the gap portion between the pressure generating unit of fundamental region P1 set among the pressure generating unit of fundamental region P21 set among the performance element 421a and the adjacent performance element 421b, do not need configuration in addition to be used for to be provided at the ink gun main body 401 that does not have ground, slit to print on the overall flow paths element length direction from the performance element of gap portion ejection ink.And, because the formation of the pressure generating unit in the performance element 421 scope is similar to the shape of performance element 421, therefore is not easy to take place performance element 421 inclinations or adorns problems such as anti-.
And, as mentioned above as can be seen, in the present embodiment, also can not form ink flow path in channel unit 404 parts corresponding to the regional P22b that appends regional P22.
Piezoelectric patches of Shi Yonging or electrode material are not limited to recited abovely in the above-described embodiments, also can be transformed to other material known.And, the flat shape of balancing gate pit or cross sectional shape, configuration status and contain the piezoelectric patches number of active layer, the number of non-active layer etc. also can proper transformation.And it is also passable that the bed thickness that contains the piezoelectric patches of active layer and non-active layer forms different-thickness.
And, in the above-described embodiments, though form performance element, needn't be bonded on performance element on the channel unit like this by configuration individual electrode and common electrode on piezoelectric patches, as long as performance element can change the volume of each balancing gate pit separately, also can use other forms.And, in the above-described embodiments, be the situation of rectangular configuration although understand the balancing gate pit, but being arranged to the situation of row or multiple row, the balancing gate pit also goes for the present invention.And in the above-described embodiments, though non-active layer all is a piezoelectric patches, non-active layer also can use the insulating trip beyond the piezoelectric patches.
Though described the present invention in conjunction with above-mentioned specific embodiment, obviously for the those of ordinary skill of one's respective area, can carry out many middle distortion, improve and change.Therefore, most preferred embodiment of the present invention as previously described is illustrative, is not restrictive.Do not break away from claims the spirit and scope of the present invention that limit more and can carry out various variations.
Claims (8)
1. ink gun has:
Channel unit comprises that an end is connected a plurality of balancing gate pits that nozzle, the other end are connected the providing ink source, the configuration adjacent to each other along the plane of above-mentioned a plurality of balancing gate pits; With
A plurality of lip-deep performance elements that are fixed on above-mentioned channel unit, be used to make the volume of above-mentioned balancing gate pit to change, each performance element has a plurality of pressure generating units corresponding with each balancing gate pit, form by the size of crossing over a plurality of above-mentioned balancing gate pits simultaneously, the above-mentioned performance element that is arranged in adjacency along the length direction of above-mentioned channel unit is being overlapped between mutually on the width of above-mentioned channel unit;
Each performance element has:
The fundamental region that a plurality of above-mentioned pressure generating units form with matrix form; With
Append the zone, be corresponding to above-mentioned fundamental region, on the width of above-mentioned channel unit adjacency append the zone, forming above-mentioned pressure generating unit corresponding to the gap portion between the above-mentioned pressure generating unit in the above-mentioned fundamental region of the above-mentioned pressure generating unit in the above-mentioned fundamental region and adjacent another performance element.
2. ink gun according to claim 1, above-mentioned performance element comes down to the quadrangle flat board, and the above-mentioned zone of appending is set near its acute angle portion.
3. ink gun according to claim 2, above-mentioned performance element comes down to the parallelogram flat board,
A plurality of above-mentioned performance elements are state adjacent to each other and arrange along the length direction of above-mentioned performance element, make two opposite side of each performance element be parallel to the length direction of above-mentioned channel unit, and two other opposite side tilt with respect to the length direction of above-mentioned channel unit.
4. ink gun according to claim 1, with respect to above-mentioned append on the length direction of zone at above-mentioned channel unit in abutting connection with and also with respect to the width of above-mentioned fundamental region at above-mentioned channel unit in the zone of adjacency, do not form above-mentioned pressure generating unit.
5. ink gun according to claim 4 is provided with the row of above-mentioned a plurality of pressure generating units that a plurality of length directions along above-mentioned channel unit arrange in above-mentioned performance element;
The columns that intersects in the zone that above-mentioned adjacent performance element overlaps each other with imaginary line on the length direction vertical direction of above-mentioned channel unit is identical with the columns that intersects in the zero lap zone.
6. ink gun according to claim 1, plural above-mentioned performance element is arranged in straight line on the length direction of above-mentioned channel unit.
7. an ink-jet printer comprises a kind of ink gun, and this ink gun has:
Channel unit comprises that an end is connected a plurality of balancing gate pits that nozzle, the other end are connected the providing ink source, the arrangement adjacent to each other along the plane of above-mentioned a plurality of balancing gate pits; With
A plurality of lip-deep performance elements that are fixed on above-mentioned channel unit, be used to make the volume of above-mentioned balancing gate pit to change, each performance element has a plurality of pressure generating units corresponding with each balancing gate pit, form by the size of crossing over a plurality of above-mentioned balancing gate pits simultaneously, the above-mentioned performance element that is arranged in adjacency along the length direction of above-mentioned channel unit is being overlapped between mutually on the width of above-mentioned channel unit;
Each performance element has:
The fundamental region that a plurality of above-mentioned pressure generating units form with matrix form; With
Append the zone, be corresponding to above-mentioned fundamental region, on the width of above-mentioned channel unit adjacency append the zone, forming above-mentioned pressure generating unit corresponding to the gap portion between the above-mentioned pressure generating unit in the above-mentioned fundamental region of the above-mentioned pressure generating unit in the above-mentioned fundamental region and adjacent another performance element.
8. ink-jet printer comprises:
Channel unit comprises that an end is connected a plurality of balancing gate pits that nozzle, the other end are connected the providing ink source, the configuration adjacent to each other along the plane of above-mentioned a plurality of balancing gate pits; With
A plurality of lip-deep performance elements that are fixed on above-mentioned channel unit, be used to make the volume of above-mentioned balancing gate pit to change, each performance element has a plurality of pressure generating units corresponding with each balancing gate pit, form by the size of crossing over a plurality of above-mentioned balancing gate pits simultaneously, the above-mentioned performance element that is arranged in adjacency along the length direction of above-mentioned channel unit is being overlapped between mutually on the width of above-mentioned channel unit;
Each performance element has:
Ink gun, this ink gun have the fundamental region that a plurality of above-mentioned pressure generating units form with matrix form; With
With respect to above-mentioned fundamental region, adjacency on the width of above-mentioned channel unit is formed with the zone of appending of above-mentioned pressure generating unit;
Drive above-mentioned ink-jet head driving circuit;
Control module, control above-mentioned drive circuit, when driving above-mentioned ink gun, append in the zone above-mentioned, only make above-mentioned pressure generating unit work corresponding to the gap portion between the above-mentioned pressure generating unit in the above-mentioned fundamental region of the above-mentioned pressure generating unit in the above-mentioned fundamental region and adjacent another performance element.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP042651/2002 | 2002-02-20 | ||
| JP2002043010 | 2002-02-20 | ||
| JP2002042651 | 2002-02-20 | ||
| JP043010/2002 | 2002-02-20 | ||
| JP045290/2002 | 2002-02-21 | ||
| JP2002045290 | 2002-02-21 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100976537A Division CN100542817C (en) | 2002-02-20 | 2003-02-20 | Ink gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1442302A CN1442302A (en) | 2003-09-17 |
| CN1275771C true CN1275771C (en) | 2006-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03106164 Expired - Lifetime CN1275771C (en) | 2002-02-20 | 2003-02-20 | Ink jet head and ink jet printer having ink jet head |
Country Status (4)
| Country | Link |
|---|---|
| EP (2) | EP1510343B1 (en) |
| JP (1) | JP4147969B2 (en) |
| CN (1) | CN1275771C (en) |
| DE (2) | DE60320403T2 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7044591B2 (en) | 2002-09-25 | 2006-05-16 | Brother Kogya Kabushiki Kaisha | Ink-jet head, filter assembly used for manufacturing the ink-jet head, and method for manufacturing the ink-jet head using the filter assembly |
| US7448734B2 (en) * | 2004-01-21 | 2008-11-11 | Silverbrook Research Pty Ltd | Inkjet printer cartridge with pagewidth printhead |
| JP4581709B2 (en) * | 2004-01-29 | 2010-11-17 | ブラザー工業株式会社 | Inkjet head |
| DE602005017440D1 (en) * | 2004-02-12 | 2009-12-17 | Brother Ind Ltd | Manufacturing method for an ink jet head |
| JP4639610B2 (en) * | 2004-03-09 | 2011-02-23 | ブラザー工業株式会社 | Inkjet head design method and inkjet head |
| JP4643162B2 (en) * | 2004-03-25 | 2011-03-02 | ブラザー工業株式会社 | Inkjet head control apparatus, inkjet head control method, and inkjet recording apparatus |
| JP4513379B2 (en) * | 2004-03-30 | 2010-07-28 | ブラザー工業株式会社 | Inkjet head |
| JP2005313629A (en) * | 2004-03-31 | 2005-11-10 | Kyocera Corp | Liquid ejection device |
| JP4715143B2 (en) * | 2004-09-21 | 2011-07-06 | 富士ゼロックス株式会社 | Ink jet recording head and ink jet recording apparatus |
| JP4591009B2 (en) * | 2004-09-24 | 2010-12-01 | 富士ゼロックス株式会社 | Ink jet recording head and ink jet recording apparatus |
| JP4587453B2 (en) * | 2004-09-27 | 2010-11-24 | キヤノン株式会社 | Ink jet recording head and ink jet recording apparatus |
| JP4774742B2 (en) * | 2005-01-11 | 2011-09-14 | 富士ゼロックス株式会社 | Ink jet recording head and ink jet recording apparatus |
| JP2006256315A (en) * | 2005-02-18 | 2006-09-28 | Brother Ind Ltd | Nozzle plate for ink jet head, ink jet head including it, and manufacturing method of nozzle plate for ink jet head |
| JP4539549B2 (en) | 2005-12-09 | 2010-09-08 | ブラザー工業株式会社 | Inkjet head, inkjet head sub-assembly, inkjet head assembly, and inkjet printer |
| JP5169599B2 (en) * | 2008-08-04 | 2013-03-27 | セイコーエプソン株式会社 | Liquid ejection device |
| JP6224791B2 (en) * | 2016-08-24 | 2017-11-01 | 京セラ株式会社 | Piezoelectric actuator substrate, liquid ejection head using the same, and recording apparatus |
| US10479075B2 (en) * | 2017-05-09 | 2019-11-19 | Canon Kabushiki Kaisha | Print head substrate and method of manufacturing the same, and semiconductor substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH03274159A (en) * | 1990-03-26 | 1991-12-05 | Brother Ind Ltd | Piezoelectric type ink jet printer head |
| US5455615A (en) * | 1992-06-04 | 1995-10-03 | Tektronix, Inc. | Multiple-orifice drop-on-demand ink jet print head having improved purging and jetting performance |
| DE4225799A1 (en) * | 1992-07-31 | 1994-02-03 | Francotyp Postalia Gmbh | Inkjet printhead and process for its manufacture |
| JPH06255098A (en) * | 1993-03-08 | 1994-09-13 | Ricoh Co Ltd | Ink jet recording apparatis and printing method |
| US5453777A (en) * | 1993-04-12 | 1995-09-26 | Presstek, Inc. | Method and apparatus for correcting and adjusting digital image output |
| JPH08187848A (en) * | 1995-01-12 | 1996-07-23 | Brother Ind Ltd | Laminated type piezoelectric element and its manufacture |
| US5757400A (en) * | 1996-02-01 | 1998-05-26 | Spectra, Inc. | High resolution matrix ink jet arrangement |
| JP3552011B2 (en) * | 1997-02-06 | 2004-08-11 | セイコーエプソン株式会社 | Ink jet recording head |
| JP3262078B2 (en) * | 1998-09-08 | 2002-03-04 | 日本電気株式会社 | Inkjet recording head |
| CN1143772C (en) * | 2000-03-21 | 2004-03-31 | 富士施乐株式会社 | Ink jet head |
| JP2001270155A (en) * | 2000-03-27 | 2001-10-02 | Brother Ind Ltd | Line printer |
-
2003
- 2003-02-19 JP JP2003040905A patent/JP4147969B2/en not_active Expired - Fee Related
- 2003-02-20 CN CN 03106164 patent/CN1275771C/en not_active Expired - Lifetime
- 2003-02-20 DE DE2003620403 patent/DE60320403T2/en not_active Expired - Lifetime
- 2003-02-20 DE DE2003606824 patent/DE60306824T2/en not_active Expired - Lifetime
- 2003-02-20 EP EP04023837A patent/EP1510343B1/en not_active Expired - Lifetime
- 2003-02-20 EP EP20030003847 patent/EP1338419B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1338419A1 (en) | 2003-08-27 |
| JP2003311959A (en) | 2003-11-06 |
| JP4147969B2 (en) | 2008-09-10 |
| DE60320403T2 (en) | 2008-07-31 |
| CN1442302A (en) | 2003-09-17 |
| EP1338419B1 (en) | 2006-07-19 |
| DE60306824T2 (en) | 2007-07-12 |
| DE60320403D1 (en) | 2008-05-29 |
| EP1510343A3 (en) | 2005-08-31 |
| DE60306824D1 (en) | 2006-08-31 |
| EP1510343B1 (en) | 2008-04-16 |
| EP1510343A2 (en) | 2005-03-02 |
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Granted publication date: 20060920 |