JP2019119118A - Liquid discharge head, liquid discharge unit, liquid discharging device - Google Patents

Abstract

To make it possible to efficiently perform monitoring and positional alignment of an application state of an adhesive.SOLUTION: A liquid discharge head comprises a first component 101, and a second component 102 which is joined to the first component 101 by an adhesive 103. The first component 101 is provided with a through hole mark 111 as a mark for positional alignment, and the second component 102 is provided with a first mark 121 and a second mark 122 as a mark for positional alignment. The first mark 121 is a mark for positional alignment such that the adhesive 103 is applied in vicinity thereof located in a joint area 104, and the second mark 122 is a mark for positional alignment such that the adhesive 103 is not applied in vicinity thereof located outside the joint area 104.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a liquid discharge head, a liquid discharge unit, and a device for discharging a liquid.

  Some liquid discharge heads are provided with alignment marks (alignment marks) when bonding a plurality of head components with an adhesive.

  Then, for example, two kinds of adhesives are applied to at least one of the first part and the second part to be joined to each other, and the first holding means and the second holding means make the parts face each other. After holding the components in contact with each other, they are pressurized with a weak pressure, and the other component is brought into contact and pressurized with one component serving as a reference to maintain this posture with the components in close contact with each other. First, after performing relative positioning of each component based on the alignment mark provided on each component while keeping each component in contact, and releasing the contact state of each component once after positioning, The components are pressure-bonded under high pressure using each adhesive, and the members pressure-bonded under high pressure are temporarily fixed with a second UV-curable adhesive, and each component is first and second adhesives It is known to join in the state through the (patent Document 1).

Unexamined-Japanese-Patent No. 2012-254611

  By the way, when joining a head structural member with an adhesive agent while recognizing an alignment mark (alignment mark), there is a problem that the monitoring of the application state of the adhesive and the alignment must be performed efficiently.

  The present invention has been made in view of the above-mentioned problems, and an object thereof is to enable efficient monitoring and registration of the applied state of the adhesive.

In order to solve the above problems, a liquid discharge head according to the present invention is
A first member,
And a second member joined with the first member by an adhesive.
Alignment marks are provided on the first member and the second member,
The alignment mark provided on at least one of the first member and the second member has a first mark to which the adhesive is applied in the vicinity, and the adhesive is applied to the vicinity. And the second mark.

  According to the present invention, it is possible to efficiently perform the monitoring of the application state of the adhesive and the alignment.

FIG. 5 is a cross-sectional explanatory view taken along the direction orthogonal to the nozzle arrangement direction of the first embodiment of the liquid discharge head according to the present invention. It is principal part expanded sectional explanatory drawing of FIG. It is principal part cross-sectional explanatory drawing along the head nozzle sequence direction. It is a perspective explanatory view by which it uses for explanation of a mark for alignment in a 1st embodiment of the present invention. It is perspective explanatory drawing which is provided to description of an example of adhesive bonding of the 1st member and 2nd member in the same embodiment. FIG. 14 is a perspective view for explaining another example of adhesive bonding of the first member and the second member in the embodiment. It is plane | planar explanatory drawing of the flow-path board as a 2nd member in 2nd Embodiment of this invention. It is a plane explanatory view of the 2nd member in a 3rd embodiment of the present invention. It is expansion plane explanatory drawing of a 1st mark part similarly. It is a plane explanatory view in the case of adhesive application insufficient used for explanation of operation of the embodiment. It is a plane explanatory view in the case of adhesive application excess too similarly. It is a plane explanatory view of the 2nd member in a 4th embodiment of the present invention. It is a plane explanatory view of the 2nd member in a 5th embodiment of the present invention. It is a plane explanatory view of the 2nd member in a 6th embodiment of the present invention. It is principal part plane explanatory drawing of an example of the apparatus which discharges the liquid which concerns on this invention. It is principal part side explanatory drawing of the same apparatus. It is principal part plane explanatory drawing of the other example of the liquid discharge unit which concerns on this invention. It is front explanatory drawing of the further another example of the liquid discharge unit which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. A first embodiment of a liquid discharge head according to the present invention will be described with reference to FIG. 1 to FIG. FIG. 1 is a cross-sectional explanatory view taken along the direction orthogonal to the nozzle array direction of the head, FIG. 2 is an enlarged cross-sectional explanatory view of the main part of FIG.

  The liquid discharge head 100 includes a nozzle plate 1, a flow path plate 2, a diaphragm member 3 which is a wall surface member, a piezoelectric element 11 which is a pressure generating element, a holding substrate 50, and a wiring member 60 such as FPC. A common liquid chamber member 70 and a cover member 45 are provided.

  Here, a portion constituted by the flow path plate 2, the diaphragm member 3 and the piezoelectric element 11 becomes an actuator substrate 20.

  The nozzle plate 1 is provided with a plurality of nozzles 4 for discharging a liquid. Here, four nozzle rows in which the nozzles 4 are arranged are arranged.

  The flow channel plate 2 together with the nozzle plate 1 and the diaphragm member 3 forms an individual liquid chamber 6 to which the nozzle 4 communicates, a fluid resistance portion 7 communicating to the individual liquid chamber 6, and a liquid introduction portion 8 to which the fluid resistance portion 7 communicates. There is.

  The liquid introducing portion 8 communicates with the common liquid chamber 10 formed by the common liquid chamber member 70 through the opening 9 of the diaphragm member 3 and the opening 51 serving as a flow path of the holding substrate 50.

  The diaphragm member 3 forms a deformable vibration area 30 which forms a part of the wall surface of the individual liquid chamber 6. Then, a piezoelectric element 11 is provided integrally with the vibration area 30 on the surface of the vibration area 30 opposite to the individual liquid chamber 6 of the vibration plate member 3, and a piezoelectric actuator is formed by the vibration area 30 and the piezoelectric element 11. ing.

  The piezoelectric element 11 is configured by sequentially laminating the lower electrode 13, the piezoelectric layer (piezoelectric body) 12 and the upper electrode 14 from the vibration region 30 side. An insulating film 21 is formed on the piezoelectric element 11.

  The lower electrode 13 serving as a common electrode of the plurality of piezoelectric elements 11 is connected to the common electrode power supply wiring pattern 28 via the common wiring 15. The lower electrode 13 is one electrode layer formed across all the piezoelectric elements 11 in the nozzle arrangement direction.

  Further, the upper electrode 14 serving as an individual electrode of the piezoelectric element 11 is connected to a drive IC (hereinafter, referred to as a “driver IC”) 500 which is a drive circuit unit via an individual wire 16. The individual wires 16 and the like are covered with an insulating film 22.

  The driver IC 500 is mounted on the actuator substrate 20 by a method such as flip chip bonding so as to cover the region between the rows of piezoelectric elements.

  The driver IC 500 mounted on the actuator substrate 20 is connected to an individual electrode power supply wiring pattern 29 to which a drive waveform (drive signal) is supplied.

  The wiring provided in the wiring member 60 is electrically connected to the driver IC 500, and the other end side of the wiring member 60 is connected to the control unit on the apparatus main body side.

  Then, a holding substrate 50 covering the piezoelectric element 11 on the actuator substrate 20 is bonded to the side of the diaphragm member 3 of the actuator substrate 20 with an adhesive.

  The holding substrate 50 is provided with an opening 51 which is a part of a flow path communicating the common liquid chamber 10 and the individual liquid chamber 6 side, a recess 52 which accommodates the piezoelectric element 11, and an opening 53 which accommodates the driver IC 500. It is done. The opening 51 is a slit-like through hole extending in the nozzle arrangement direction, and constitutes a part of the common liquid chamber 10 here.

  The holding substrate 50 is interposed between the actuator substrate 20 and the common liquid chamber member 70, and forms a part of the wall surface of the common liquid chamber 10.

  The common liquid chamber member 70 forms a common liquid chamber 10 for supplying liquid to each individual liquid chamber 6. The common liquid chamber 10 is provided corresponding to each of the four nozzle rows, and a liquid of a required color is supplied from the outside.

  A damper member 90 is joined to the common liquid chamber member 70. The damper member 90 has a deformable damper 91 which forms a part of the wall surface of the common liquid chamber 10, and a damper plate 92 which reinforces the damper 91.

  The common liquid chamber member 70 is bonded to the outer peripheral portion of the nozzle plate 1 and the holding substrate 50 with an adhesive, accommodates the actuator substrate 20 and the holding substrate 50, and constitutes a frame of the head.

  A cover member 45 is provided to cover the peripheral portion of the nozzle plate 1 and a part of the outer peripheral surface of the common liquid chamber member 70.

  In the liquid discharge head 100, the piezoelectric layer 12 is stretched in the electrode laminating direction, that is, the electric field direction by applying a voltage between the upper electrode 14 and the lower electrode 13 of the piezoelectric element 11 from the driver IC 500. Shrink in parallel direction. As a result, a tensile stress is generated on the lower electrode 13 side of the vibration area 30, and the vibration area 30 is bent to the individual liquid chamber 6 side, and liquid is discharged from the nozzle 4 by pressurizing the liquid inside.

  Next, alignment marks and alignment in the first embodiment of the present invention will be described with reference to FIG. FIG. 4 is a perspective view for explaining the same.

  Here, an example in which the first member 101 and the second member 102 are joined by the adhesive 103 will be described. For example, one of the first member 101 and the second member 102 is the nozzle plate 1 and the other is the actuator substrate 20, one is the actuator substrate 20, the other is the holding substrate 50, and one is the nozzle plate 1 and the other. Although it is referred to as the flow channel plate 2, it is not limited to these examples.

  A through hole mark 111 is provided on the first member 101 as a positioning mark. The through hole marks 111 are respectively provided on both end sides in the nozzle array direction of the bonding area 104 bonded by the adhesive 103.

  The second member 102 is provided with a first mark 121 and a second mark 122 as alignment marks. The first mark 121 and the second mark 122 are patterns formed by etching or the like.

  Here, the first mark 121 is a positioning mark in which the adhesive 103 is applied in the vicinity disposed in the bonding area 104. The second mark 122 is a positioning mark in which the adhesive 103 is not applied in the vicinity located outside the bonding area 104.

  Further, the first marks 121 are respectively provided on both end sides of the bonding area 104 in the nozzle arrangement direction. The second mark 122 is provided outside the bonding area 104 and at one end side in the nozzle arrangement direction in line with the first mark 121.

  Here, by arranging the first marks 121 and the second marks 122 at one end in the nozzle arrangement direction, the layout of the marks becomes easy, and the application region of the adhesive 103 which becomes the bonding region 104 is not Control of the provision area 105 is facilitated.

  The adhesive 103 is applied to the second member 102 by thin film printing, spray coating, or the like.

  Next, an example of adhesive bonding of the first member and the second member in the present embodiment will be described with reference to FIG. FIG. 5 is a perspective view for explaining the same.

  In this example, while imaging the through hole mark 111 of the first member 101 and the first mark 121 of the second member 102 coaxially by the imaging device 200 and performing image recognition by image processing, the first member 101 and the first The two members 102 are moved relative to each other for alignment. Thereafter, the first member 101 and the second member 102 are bonded by the adhesive 103 by pressure or the like.

  Next, another example of adhesive bonding of the first member and the second member in the present embodiment will be described with reference to FIG. FIG. 6 is a perspective view for explaining the same.

  Here, the positional relationship between the imaging device 201 and the imaging device 202 is managed, the first member 101 is imaged by the imaging device 201 for image recognition, and the second member 102 is imaged by the imaging device 202. recognize.

  Then, by aligning the through hole mark 111 of the first member 101 and the first mark 121 of the second member 102 to a target position, the first member 101 and the second member 102 are indirectly aligned. Thereafter, the first member 101 and the second member 102 are bonded by the adhesive 103 by pressure or the like.

  In these examples, the first mark 121 is registered in advance as a reference mark as a reference mark including the application state of the adhesive 103 in the vicinity, in a bonding apparatus that performs alignment and bonding.

  Then, the application state of the adhesive 103 is determined by comparing the imaging result of the first mark 121 by the imaging device 200 or 202 with the registered reference mark, and the application failure such as the insufficient application of the adhesive 103 or the like. Error processing can be performed when a problem occurs.

  As described above, by having the first mark 121 to which the adhesive 103 is applied in the vicinity, the first mark 121 can be registered as a reference mark including the application state of the adhesive 103 in the vicinity. This makes it possible to recognize the adhesive application state as well as the alignment based on the recognition of the mark, so that it is possible to achieve both a stable yield and high productivity.

  Further, in the present embodiment, the second mark 122 to which the adhesive 103 is not applied is provided along with the first mark 121 to which the adhesive 103 is applied in the vicinity.

  Therefore, if the image of the normal mark can not be recognized, for example, if the shape of the first mark 121 is changed due to excessive adhesive application, the second mark 122 can be used for alignment. become.

  In this case, after the distance between the marks of the first mark 121 and the second mark 122 is managed in advance and alignment is performed using the second mark 122, the first member 101 or the second member 102 is used. The offset can be adjusted to the correct position by offsetting the distance between the marks.

  In this way, monitoring of the application state of the adhesive and alignment can be performed efficiently.

  Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a plan view of a flow path plate as a second member in the embodiment.

  The flow path plate 2 is provided with four rows of a plurality of individual flow paths 61 constituted by the individual liquid chambers 6, the fluid resistance portion 7, the liquid introduction portion 8 and the like. The first mark 121 is disposed adjacent to the row of the individual liquid chambers 61.

  Thereby, the head size in the nozzle arrangement direction can be shortened.

  Further, the first mark 121 and the second mark 122 have the same shape.

  As a result, mark registration in the case of image recognition can be easily performed, and management of positional deviation amount after bonding becomes easy. Furthermore, with the same shape, the process of forming the mark can be made the same, and the influence of process variations can be reduced.

  Next, a third embodiment of the present invention will be described with reference to FIGS. 8 and 9. FIG. 8 is a plan explanatory view of a second member in the embodiment, and FIG. 9 is an enlarged plan explanatory view of a first mark portion in the same manner.

  Also in the present embodiment, the first mark 121 and the second mark 122 are disposed on the second member 102.

  The first mark 121 is configured by concentrically arranging an area 121A to which the adhesive 103 is not applied, an area 121B to which the adhesive 103 is applied, and an area 121C to which the adhesive 103 is not applied. The adhesive 103 is also applied to the outer area of

  Therefore, as shown in FIG. 9, the area including the adhesive 103 in the outer area of the first mark 121 is registered in the bonding apparatus as a mark image (registration mark). Thus, not only the alignment but also the adhesive application state can be confirmed.

  In this case, since the color tone changes depending on the thickness of the applied state of the adhesive 103 (for example, the printing state), the sensitivity is relatively lowered when detecting the first mark 121 in the adhesive area, and when detecting the second mark 122. By increasing the sensitivity, appropriate inspection and confirmation can be made.

  Next, the operation of the present embodiment will be described with reference to FIGS. FIG. 10 is a plan explanatory view in the case where the adhesive application area is insufficient, and FIG. 11 is a plan explanatory view in the case where the adhesive application amount is excessive.

  As shown in FIG. 10, in the case where the adhesive application area is insufficient, a search error can be generated due to a mismatch with the registration mark, and the occurrence of a defect can be suppressed.

  Thereby, when the first member 101 is the nozzle plate 1 or the like, it is possible to prevent the occurrence of the liquid discharge head in which the liquid intrudes from the through hole mark 111 into the inside.

  Further, as shown in FIG. 11, when the adhesive application amount is excessive, the first mark 121 can not be recognized due to the change of the shape of the first mark 121, so that a search error occurs and the occurrence of defect is suppressed. Can. Moreover, in the case of adhesion | attachment with the tolerance with respect to adhesive application amount excess, as above-mentioned, recovery is performed using the 2nd mark 122 in which the adhesive agent 103 is not provided in the vicinity for alignment.

  In this case, as described above, the distance between marks of the first mark 121 and the second mark 122 is managed, and after the alignment with the second mark 122, the distance between marks is offset to correspond. At this time, by reducing the distance between marks, the distance for relatively moving the first member and the second member becomes short, and the enlargement of the bonding apparatus can be suppressed.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 12 is a plan view of the second member in the embodiment.

  In the present embodiment, the first marks 121 and the second marks 122 are arranged along the nozzle arrangement direction at both ends of the second member 102 in the nozzle arrangement direction. In this case, non-applied regions 105 to which the adhesive 103 is not applied are provided in the vicinity of the second marks 122 at both ends of the second member 102 in the nozzle arrangement direction.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 13 is a plan view of the second member in the embodiment.

  In the present embodiment, the first marks 121 and the second marks 122 are arranged along the nozzle arrangement direction at both ends of the second member 102 in the nozzle arrangement direction. Then, only the area in the vicinity of the second marks 122 at both ends in the nozzle arrangement direction of the second member 102 is the non-application area 105 where the adhesive 103 is not applied, and the application area (junction area ) Is provided.

  As a result, the bonding area between the first member 101 and the second member 102 can be wider than in the fourth embodiment, and the bonding strength can be improved.

  Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 14 is a plan view of the second member in the embodiment.

  In the present embodiment, the first marks 121 and the second marks 122 are arranged in a direction orthogonal to the nozzle arrangement direction. The second mark 122 is disposed at the corner of the second member 102.

  As a result, the area to which the adhesive 103 is applied is broadened to improve the bonding strength, and the size of the second member 102 in the nozzle arrangement direction can be shortened, so that the head size can be reduced and the bonding apparatus can be miniaturized. It can be done.

  In the above embodiments, the first mark and the second mark are provided in the second member, but the first member may be provided with the first mark and the second mark. The first mark and the second mark may be provided on both the one member and the second member.

  Next, an example of a device for discharging a liquid according to the present invention will be described with reference to FIGS. FIG. 15 is an explanatory plan view of the main part of the apparatus, and FIG. 16 is an explanatory side view of the main part of the apparatus.

  This apparatus is a serial type apparatus, and the carriage 403 reciprocally moves in the main scanning direction by the main scanning movement mechanism 493. The main scanning movement mechanism 493 includes a guide member 401, a main scanning motor 405, a timing belt 408, and the like. The guide member 401 is bridged by the left and right side plates 491A and 491B and holds the carriage 403 movably. Then, the carriage 403 is reciprocated in the main scanning direction via the timing belt 408 bridged between the drive pulley 406 and the driven pulley 407 by the main scanning motor 405.

  On the carriage 403, a liquid discharge unit 440 in which a liquid discharge head 404 and a head tank 441 according to the present invention are integrated is mounted. The liquid ejection head 404 of the liquid ejection unit 440 ejects, for example, liquid of each color of yellow (Y), cyan (C), magenta (M), and black (K). Further, the liquid discharge head 404 has a nozzle row consisting of a plurality of nozzles arranged in the sub-scanning direction orthogonal to the main scanning direction, and is mounted with the discharge direction downward.

  The liquid stored in the liquid cartridge 450 is supplied to the head tank 441 by the supply mechanism 494 for supplying the liquid stored in the outside of the liquid discharge head 404 to the liquid discharge head 404.

  The supply mechanism 494 includes a cartridge holder 451 as a filling unit for mounting the liquid cartridge 450, a tube 456, a liquid feeding unit 452 including a liquid feeding pump, and the like. The liquid cartridge 450 is detachably mounted to the cartridge holder 451. The liquid is fed from the liquid cartridge 450 to the head tank 441 by the liquid feeding unit 452 via the tube 456.

  The apparatus includes a transport mechanism 495 for transporting the sheet 410. The transport mechanism 495 includes a transport belt 412 which is transport means, and a sub scanning motor 416 for driving the transport belt 412.

  The conveyance belt 412 adsorbs the sheet 410 and conveys the sheet 410 at a position facing the liquid discharge head 404. The conveyance belt 412 is an endless belt and is stretched between the conveyance roller 413 and the tension roller 414. The adsorption can be performed by electrostatic adsorption or air suction.

  The conveyance belt 412 rotates in the sub-scanning direction as the conveyance roller 413 is rotationally driven by the sub-scanning motor 416 via the timing belt 417 and the timing pulley 418.

  Further, on one side of the carriage 403 in the main scanning direction, a maintenance recovery mechanism 420 for maintaining and recovering the liquid discharge head 404 is disposed on the side of the transport belt 412.

  The maintenance and recovery mechanism 420 includes, for example, a cap member 421 for capping the nozzle surface (surface on which the nozzle is formed) of the liquid discharge head 404, a wiper member 422 for wiping the nozzle surface, and the like.

  The main scanning movement mechanism 493, the supply mechanism 494, the maintenance recovery mechanism 420, and the transport mechanism 495 are attached to a housing including the side plates 491A and 491B and the back plate 491C.

  In this apparatus configured as described above, the sheet 410 is fed and adsorbed onto the conveyance belt 412, and the sheet 410 is conveyed in the sub-scanning direction by the circumferential movement of the conveyance belt 412.

Therefore, the liquid ejection head 404 is driven according to the image signal while moving the carriage 403 in the main scanning direction, thereby ejecting the liquid onto the stopped sheet 410 to form an image.

  As described above, in this apparatus, since the liquid discharge head according to the present invention is provided, a high quality image can be stably formed.

  Next, another example of the liquid discharge unit according to the present invention will be described with reference to FIG. FIG. 17 is an explanatory plan view of the main part of the unit.

  Among the members constituting the device for discharging the liquid, the liquid discharge unit includes a housing portion constituted by the side plates 491A and 491B and the back plate 491C, the main scanning movement mechanism 493, the carriage 403, and the liquid It comprises the discharge head 404.

  It is also possible to configure a liquid discharge unit in which at least one of the aforementioned maintenance and recovery mechanism 420 and the supply mechanism 494 is further attached to, for example, the side plate 491B of this liquid discharge unit.

  Next, still another example of the liquid discharge unit according to the present invention will be described with reference to FIG. FIG. 18 is a front view of the unit.

  The liquid discharge unit includes a liquid discharge head 404 to which a flow path component 444 as a liquid supply member is attached, and a tube 456 connected to the flow path component 444.

  The channel component 444 is disposed inside the cover 442. Instead of the flow path component 444, a head tank 441 can be included. Further, a connector 443 electrically connected to the liquid discharge head 404 is provided on the upper portion of the flow path component 444.

  In the present invention, the liquid to be discharged is not particularly limited as long as it has a viscosity and surface tension that can be discharged from the head, but the viscosity becomes 30 mPa · s or less at normal temperature or normal pressure, or by heating and cooling. It is preferred that More specifically, solvents such as water and organic solvents, colorants such as dyes and pigments, polymerizable compounds, functionalizing materials such as resins and surfactants, and biocompatible materials such as DNA, amino acids, proteins and calcium Solutions, suspensions, emulsions, etc. containing edible materials such as natural pigments, etc. These are, for example, ink jet inks, surface treatment liquids, components of electronic devices and light emitting devices, and formation of electronic circuit resist patterns It can be used in applications such as liquids for liquids, material liquids for three-dimensional modeling and the like.

  Use a piezoelectric actuator (laminated piezoelectric element and thin film piezoelectric element), a thermal actuator using an electrothermal transducer such as a heating resistor, an electrostatic actuator consisting of a diaphragm and a counter electrode, etc. as an energy source to discharge liquid It includes what you do.

  The “liquid discharge unit” is a liquid discharge head in which functional parts and mechanisms are integrated, and includes an assembly of parts related to the discharge of liquid. For example, the “liquid discharge unit” includes a combination of at least one of the configuration of a head tank, a carriage, a supply mechanism, a maintenance recovery mechanism, and a main scanning movement mechanism with a liquid discharge head.

  Here, integration means, for example, one in which the liquid discharge head and the functional component or mechanism are fixed to each other by fastening, bonding, engagement or the like, or one in which one is held movably with respect to the other. Including. In addition, the liquid discharge head, the functional components, and the mechanism may be configured to be removable from each other.

  For example, there is a liquid discharge unit in which a liquid discharge head and a head tank are integrated. In addition, there is one in which the liquid discharge head and the head tank are integrated by being connected to each other by a tube or the like. Here, it is possible to add a unit including a filter between the head tank of these liquid discharge units and the liquid discharge head.

  Further, as a liquid discharge unit, there is one in which a liquid discharge head and a carriage are integrated.

  Further, as a liquid discharge unit, there is one in which the liquid discharge head is movably held by a guide member constituting a part of the scanning movement mechanism, and the liquid discharge head and the scanning movement mechanism are integrated. In addition, there is one in which the liquid discharge head, the carriage, and the main scanning movement mechanism are integrated.

  Further, as a liquid discharge unit, there is one in which a cap member which is a part of a maintenance recovery mechanism is fixed to a carriage attached with a liquid discharge head, and the liquid discharge head, the carriage and the maintenance recovery mechanism are integrated. .

  Further, as a liquid discharge unit, there is one in which a tube is connected to a liquid discharge head to which a head tank or a flow path part is attached, and the liquid discharge head and the supply mechanism are integrated. The liquid of the liquid storage source is supplied to the liquid discharge head through the tube.

  The main scanning movement mechanism also includes a single guide member. The supply mechanism also includes a single tube and a single loading unit.

The “device for discharging liquid” includes a liquid discharge head or a liquid discharge unit, and includes a device which drives the liquid discharge head to discharge the liquid. The device for discharging the liquid includes not only a device capable of discharging the liquid to those to which the liquid can adhere, but also a device for discharging the liquid into the air or into the liquid.

  This "device for discharging liquid" can also include means related to feeding, transporting, and discharging of those to which the liquid can be attached, as well as a pre-processing device, a post-processing device, and the like.

  For example, as a “device for discharging a liquid”, an image forming device which is a device for discharging an ink to form an image on a sheet, and forming a powder in layers to form a three-dimensional object (three-dimensional object) There is a three-dimensional modeling apparatus (three-dimensional modeling apparatus) which discharges a modeling liquid to the powder layer.

  Further, the “device for discharging liquid” is not limited to a device in which a significant image such as characters and figures is visualized by the discharged liquid. For example, those which form patterns having no meaning per se and those which form three-dimensional images are included.

  The above-mentioned "thing to which liquid can be attached" means one to which liquid can be attached at least temporarily, which adheres and adheres, and adheres and penetrates. Specific examples include recording media such as paper, recording paper, recording paper, film, cloth, electronic substrates, electronic components such as piezoelectric elements, and media such as powder layers (powder layers), organ models, and inspection cells. Yes, and unless otherwise specified, all things to which the liquid adheres are included.

  The material of the above-mentioned "thing to which liquid can adhere" may be any liquid such as paper, yarn, fiber, fabric, leather, metal, plastic, glass, wood, ceramics, etc. as long as it temporarily adheres thereto.

  Further, as the “device for discharging the liquid”, there is a device in which the liquid discharge head and the device to which the liquid can be attached relatively move, but it is not limited to this. Specific examples include a serial type device that moves the liquid discharge head, a line type device that does not move the liquid discharge head, and the like.

  In addition, as the “apparatus for discharging liquid”, there is also provided a processing liquid application apparatus for discharging a processing liquid onto a sheet in order to apply the processing liquid to the surface of the sheet for the purpose of reforming the surface of the sheet. There is an injection granulator which granulates the fine particles of the raw material by injecting a composition liquid in which the raw material is dispersed in a solution through a nozzle.

  In the terms of the present application, image formation, recording, printing, printing, printing, modeling and the like are all synonymous.

DESCRIPTION OF SYMBOLS 1 nozzle plate 2 flow path plate 3 diaphragm member 4 nozzle 6 individual liquid chamber 10 common liquid chamber 20 actuator substrate 50 holding substrate 100 liquid discharge head 101 first member 102 second member 103 adhesive 104 bonding region (application region)
105 Unapplied area 403 Carriage 404 Liquid discharge head 440 Liquid discharge unit

Claims (9)

A first member,
And a second member joined with the first member by an adhesive.
Alignment marks are provided on the first member and the second member,
The alignment mark provided on at least one of the first member and the second member has a first mark to which the adhesive is applied in the vicinity, and the adhesive is applied to the vicinity. And a second mark. The liquid discharge head according to claim 1, wherein the first mark and the second mark are disposed on at least one end side in a nozzle arrangement direction. The liquid discharge head according to claim 1, wherein the first mark and the second mark are arranged side by side in the nozzle arrangement direction. The liquid discharge head according to claim 1, wherein the first mark and the second mark are arranged side by side in a direction orthogonal to the nozzle arrangement direction. The first mark and the second mark have the same shape.
The liquid discharge head according to any one of claims 1 to 4, characterized in that: The first mark is a mark in which a region to which the adhesive is not applied and a region to which the adhesive is applied are arranged concentrically. The liquid discharge head according to claim 1.   A liquid discharge unit comprising the liquid discharge head according to any one of claims 1 to 6. A head tank for storing liquid to be supplied to the liquid discharge head, a carriage for mounting the liquid discharge head, a supply mechanism for supplying liquid to the liquid discharge head, a maintenance recovery mechanism for maintaining and recovering the liquid discharge head, the liquid 8. The liquid discharge unit according to claim 7, wherein the liquid discharge head is integrated with at least one of a main scanning movement mechanism for moving the discharge head in the main scanning direction. An apparatus for discharging a liquid comprising the liquid discharge head according to any one of claims 1 to 6, and the liquid discharge unit according to claim 7 or 8.

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