JP2007185868A - Inkjet apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inkjet apparatus wherein a resin filling a gap between a head cover and an inkjet head, or an inkjet head is restrained from being damaged. <P>SOLUTION: The inkjet apparatus is provided with: an inkjet head 1; a supporting member 2 for supporting the inkjet head 1; a head cover 3 having an opening 3a; and a resin reservoir member 5 for filling the gap between the opening 3a and the inkjet head 1 with the resin 11. The resin reservoir member 5 has a U-shaped cross-section, and the U-shaped opening is arranged so as to face the outside, so that the inside of the U-shape is filled with the resin 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an inkjet apparatus.

  Some printers that print images and videos on a substrate and industrial printers that place pigments on a substrate to be processed include an inkjet head. The ink jet head is formed so as to eject ink in a predetermined amount from an ink ejection port. The ink jet head includes a pressurizing mechanism for pressurizing ink inside, and is formed so that ink is ejected from an ink discharge port when the ink is pressurized.

  In an ink jet apparatus, an ink jet head is supported by a support member. Further, a head cover fixed to a support member may be disposed around the ink discharge port of the inkjet head. In this case, resin is filled between the head cover and the inkjet head so that the ink does not flow into the inkjet apparatus.

  A conventional ink jet apparatus will be described with reference to FIGS. 17 to 19. FIG. 17 is a schematic cross-sectional view of a main part of an ink jet apparatus based on a conventional technique. The inkjet head 1 is supported by a support member 2. The support member 2 includes an ink supply member 21 and a head base 22.

  A head cover 3 is disposed on the upper side of the support member 2. The head cover 3 has an opening 3a. The inkjet head 1 has an ink discharge port on the upper surface. The opening 3a is formed so as to expose the surface where the ink discharge port of the inkjet head 1 is formed.

  FIG. 18 shows a schematic plan view of the main part of an ink jet apparatus based on the conventional technology. A plurality of ink ejection openings 1 a are formed on the surface of the inkjet head 1. A resin 10 is disposed to fill a gap between the inkjet head 1 and the opening 3 a of the head cover 3. That is, the resin 10 is disposed to seal the gap.

  FIG. 19 is a schematic cross-sectional view for explaining a manufacturing process of an ink jet device based on a conventional technique. The inkjet head 1 is fixed to the support member 2. Next, the head cover 3 is disposed above the support member 2 so that the inkjet head 1 is disposed inside the opening 3 a of the head cover 3. Next, as shown by an arrow 57, the opening 3a and the inkjet head 1 are filled with resin in the gap. In this way, the ink jet head can be fixed to the support member and the head cover.

In Japanese Patent Application Laid-Open No. 10-44419, when providing a sealing resin portion for sealing an electrical connection portion, one end of the sealing resin portion located between the plurality of discharge ports and the electrical connection portion and the discharge portion are provided. There is disclosed a liquid discharge head that is between the outlet and has a recess that defines the position of one end of the sealing resin portion.
JP-A-10-44419

  Referring to FIG. 19, after the inkjet head 1 and the head cover 3 are arranged on the support member 2, in the step of filling the resin inside the opening 3 a, as shown by an arrow 56, the injected resin is the support member 2. Between the head cover 3 and the head cover 3, which requires a lot of resin.

  That is, when the members around the inkjet head 1 are composed of a plurality of members, the resin flows through the gaps between the plurality of members. For this reason, when the resin is injected into the gap between the inkjet head and the head cover, there is a problem that the amount of the resin to be used is larger than the volume of the gap between the inkjet head and the head cover. In addition, since the resin penetrates into the gaps between the members, the amount of resin to be filled differs depending on each inkjet apparatus, and there is a problem that it is difficult to manage the resin amount.

  Referring to FIGS. 17 and 18, there is a further problem that a residual stress is generated when the resin filled in the opening 3 a of the head cover 3 is cured and a crack 46 is generated in the resin 10. Alternatively, there is a problem that peeling occurs between the resin 10 and the inkjet head 1.

  For example, when the epoxy resin as the resin 10 is filled inside the opening 3a, the curing yield of the epoxy resin is 1% to 2%, so that residual stress is generated in the resin itself. The residual stress of the resin itself may cause peeling at the connection interface between the inkjet head and the resin. There is a possibility that an adverse effect such as a short circuit occurs in an electrical component for driving the ink jet head due to ink flowing into the inside of the peeling.

  Similarly, in the case of a crack, when the crack 46 or the like generated in the resin 10 reaches the surface of the support member, there is a problem that ink that enters the crack 46 may cause a malfunction of the apparatus. .

  Or if the surface of the inkjet head 1 is rough, the anchor effect with respect to the resin 10 will arise, and the connection of the inkjet head 1 and the resin 10 will become strong. In such a case, there is a problem that a force is applied to the ink jet head 1 due to the residual stress of the resin 10 to cause a crack 45 in the ink jet head 1. When the crack 45 occurs in the inkjet head 1, there is a problem that the driving of the inkjet head 1 becomes abnormal.

  An object of the present invention is to provide an ink jet apparatus that suppresses breakage of a resin or an ink jet head that fills a gap between a head cover and an ink jet head.

  An inkjet apparatus according to the present invention includes an inkjet head, a support member for supporting the inkjet head, and a head cover that is disposed on the upper surface of the support member and has an opening. A resin reservoir member is provided for storing resin that closes a gap between the opening and the inkjet head. The ink jet head is disposed such that the ink discharge port is exposed from the opening. The resin reservoir member is disposed between the opening and the inkjet head. The resin reservoir member is formed in a frame shape having a closed planar shape. The resin reservoir member has a U-shaped cross section having one bottom and two walls. The resin reservoir member is disposed such that the U-shaped opening faces outward. The resin is filled inside the U-shape.

  Preferably, in the above invention, the resin reservoir member is made of a material having a Young's modulus smaller than that of the inkjet head or the head cover.

  Preferably, in the above invention, a blade for wiping off ink remaining on the surface of the ink jet head where the ink discharge port is formed is provided. The resin reservoir member is formed such that the end surface of one wall portion is lower than the surface of the inkjet head. The resin reservoir member is formed so that the end surface of the other wall portion is lower than the surface of the head cover. The resin is filled so that the surface is substantially flush with the surface of the inkjet head and the surface of the head cover.

  In the above invention, preferably, the resin reservoir member is formed of an elastic member. When the resin reservoir member is pressed against the head cover, one of the wall portions is in pressure contact with the head cover.

  An ink jet apparatus according to another aspect of the present invention includes an ink jet head, a support member for supporting the ink jet head, a head cover disposed on an upper surface of the support member, having an opening, and a frame having a planar shape closed. With a shaped packing. The ink jet head is disposed such that the ink discharge port is exposed from the opening. The packing is disposed between the opening and the inkjet head. The packing is in close contact with the opening and the inkjet head.

  In the above invention, the packing is preferably made of an elastic material.

  ADVANTAGE OF THE INVENTION According to this invention, the inkjet apparatus which suppressed that the resin or inkjet head which fills the clearance gap between a head cover and an inkjet head was suppressed can be provided.

(Embodiment 1)
With reference to FIGS. 1 to 8, an ink jet apparatus according to a first embodiment of the present invention will be described.

  FIG. 1 is a schematic cross-sectional view of the main part of the ink jet apparatus according to the present embodiment. FIG. 2 is a schematic plan view of the main part of the ink jet apparatus according to the present embodiment. The ink jet apparatus includes an ink jet head 1. An ink discharge port 1 a is formed on one end face of the inkjet head 1. The ink jet head 1 is arranged so that the end surface on which the ink discharge port 1a is formed faces the substrate.

  The ink jet apparatus includes a support member 2 for supporting the ink jet head 1. The support member 2 in the present embodiment includes an ink supply member 21 and a head base 22. The support member 2 has a recess 2 b formed by joining the ink supply member 21 and the head member 22.

  The ink supply member 21 has an ink supply tube 2a. The ink supply pipe 2 a is formed so that each color ink can be supplied to the inkjet head 1. That is, the support member 2 in the present embodiment has a function of supplying ink.

  The inkjet head 1 is disposed in the recess 2b. The ink supply tube 2a is formed so as to penetrate the side surface of the recess 2b. The ink jet head 1 has an ink flow path formed therein. The ink supply tube 2a is formed so as to face the ink inlet formed on the side surface of the inkjet head 1 when the inkjet head 1 is disposed in the recess 2b.

  An O-ring 15 is disposed between the inkjet head 1 and the side surface of the recess 2b. The O-ring 15 is disposed around a path where the ink inlet of the inkjet head 1 communicates with the ink supply pipe 2a. The O-ring 15 is arranged so that ink does not leak outside.

  In the present embodiment, an electrode (not shown) is formed on the surface of the inkjet head 1. A wiring is disposed on the bottom surface of the recess 2 b of the support member 2 and is electrically connected to the electrode of the inkjet head 1. The inkjet head 1 is formed so as to be electrically controlled by an external circuit (not shown). The inkjet head 1 is formed so that the type of ink and the amount of ink discharged can be controlled by the received electrical signal.

  The ink jet apparatus includes a head cover 3 disposed on the upper surface of the support member 2. The head cover 3 is fixed to the support member 2. The head cover 3 has an opening 3a. The opening 3a is formed so that the inkjet head 1 can be disposed inside. The ink jet head 1 is disposed so that the ink discharge port is exposed from the opening 3a.

  The ink jet apparatus according to the present embodiment includes a resin reservoir member 5 disposed between the opening 3 a of the head cover 3 and the ink jet head 1. The resin reservoir member 5 is formed in a frame shape when viewed in plan. The resin reservoir member 5 is formed in a shape in which the planar shape is closed. The resin reservoir member 5 is formed so as to have a U-shaped cross section. The resin reservoir member 5 is disposed such that the U-shaped opening having a cross-sectional shape faces the outside. The resin reservoir member 5 is formed so as to fill a gap between the opening 3 a and the inkjet head 1.

  The resin reservoir member 5 in the present embodiment is formed of a material having a smaller Young's modulus than the inkjet head 1 and the head cover 3. That is, the resin reservoir member 5 is formed of a softer material than the inkjet head 1 and the head cover 3. Resin reservoir member 5 in the present embodiment is formed of a silicon-based resin.

  FIG. 3 shows an enlarged schematic cross-sectional view of the resin reservoir member. The resin reservoir member 5 has a bottom portion 5a. The bottom 5 a is in contact with the upper surface of the support member 2. The resin reservoir member 5 has a wall portion 5b. The wall 5 b is in contact with the side surface of the inkjet head 1. The wall 5b is formed so as to be substantially the same as the height of the surface of the inkjet head 1. The resin reservoir member 5 has a wall portion 5c. The wall 5 c is in contact with the opening 3 a of the head cover 3. The wall 5c is formed to be substantially the same as the height of the surface of the head cover 3.

  The surface of the head cover 3 is formed in a flat shape. The surface of the head cover 3 is formed so as to be substantially flush with the surface of the inkjet head 1 where the ink discharge ports 1a are formed. Further, the resin 11 is filled so that the surface is substantially flush with the surface of the head cover 3. The resin 11 is filled so that the surface is substantially flush with the surface on which the ink discharge ports 1a of the inkjet head 1 are formed.

  Next, with reference to FIGS. 4 to 8, a method for manufacturing the ink jet apparatus according to the present embodiment will be described.

  FIG. 4 is a first process explanatory diagram of the method of manufacturing the ink jet device according to the present embodiment. First, as shown by an arrow 51, the inkjet head 1 is fixed to the upper surface of the head base 22 with an adhesive or the like.

  Next, the ink supply member 21 is fixed to the head base 22 as indicated by an arrow 57. At this time, the ink supply port formed on the side surface of the inkjet head 1 and the ink supply pipe 2a formed on the ink supply member 21 are arranged to face each other. An O-ring 15 is disposed so as to surround the ink supply pipe 2a.

  FIG. 5 is an explanatory diagram of a second step of the method of manufacturing the ink jet device according to the present embodiment. By disposing the inkjet head 1 in the recess 2b of the support member 2, the ink flow path 1b formed inside the inkjet head 1 and the ink supply pipe 2a communicate with each other. In addition, an electrode formed on the inkjet head 1 (not shown) and a wiring arranged on the support member 2 come into contact with each other and are electrically connected.

  FIG. 6 is an explanatory diagram of a third step of the method of manufacturing the ink jet device according to the present embodiment. Next, as shown by the arrow 52, the head cover 3 is arranged on the upper side of the support member 2 and fixed. The head cover 3 is fixed with an adhesive, for example. The inkjet head 1 is fixed so as to be disposed inside the opening 3 a formed in the head cover 3.

  FIG. 7 illustrates a fourth process explanatory diagram of the method of manufacturing the ink jet device according to the present embodiment. A resin reservoir member 5 is disposed in the gap between the opening 3 a of the head cover 3 and the inkjet head 1 as indicated by an arrow 53. The resin reservoir member 5 is disposed so that the U-shaped opening having a cross-sectional shape faces upward.

  FIG. 8 is an explanatory diagram of a fifth step of the method of manufacturing the ink jet device according to the present embodiment. Next, the resin 11 is filled inside the U-shaped portion of the resin reservoir member. In the present embodiment, the resin 11 is filled so that the surface of the resin 11 is substantially flush with the surface of the head cover 3 and the surface of the inkjet head 1 on which the ink discharge ports 1a are formed.

  In this resin filling step, since the resin reservoir member 5 is disposed between the inkjet head 1 and the opening 3 a of the head cover 3, the resin 11 is prevented from flowing into the gap between the head cover 3 and the support member 2. it can. Further, the amount of the resin 11 to be filled can be easily managed. That is, the resin 11 corresponding to the volume inside the U-shape of the resin reservoir member may be filled.

  Even if a large crack occurs in the resin 11, the ink that penetrates along the crack reaches the resin reservoir member 5 and is blocked. That is, it is possible to prevent the ink from flowing into the ink jet apparatus through the crack. As a result, it is possible to prevent the electric circuit inside the printing press from being damaged or causing a short circuit.

  In the ink jet apparatus according to the present embodiment, the resin reservoir member is formed of a member having a Young's modulus smaller than that of the ink jet head or the head cover, so that the residual stress generated when the resin is cured and contracted is reduced by the resin reservoir member. can do. As a result, the occurrence of cracks in the inkjet head can be suppressed. The resin reservoir member is preferably formed of a material having a Young's modulus smaller than that when the resin is cured. With this configuration, it is possible to suppress the occurrence of cracks in the resin itself. Examples of materials having a small Young's modulus include silicon resins and epoxy resins among organic materials.

  The resin reservoir member is preferably formed of a material having a Young's modulus that can absorb 1 to 2% of the strain generated by the curing shrinkage of the resin. With this configuration, the occurrence of cracks in the resin itself can be suppressed. Examples of materials that can absorb curing shrinkage include silicon resins and epoxy resins that are organic materials.

  As the resin reservoir member, it is preferable that two wall portions facing each other are formed so as to have elasticity in directions away from each other. With this configuration, one wall portion is in close contact with the inkjet head, and the other wall portion is in close contact with the head cover. For this reason, it is possible to more reliably prevent ink from entering from the contact portion between the resin reservoir member and the head cover or the contact portion between the resin reservoir member and the ink jet head.

  In the present embodiment, the resin is disposed inside the U-shape of the resin reservoir member. However, the present invention is not limited to this, and the resin is disposed on a part of the surface of the inkjet head and a part of the surface of the head cover. It does not matter. That is, the resin may be arranged so that the resin reservoir member is completely hidden by the resin when viewed in plan.

  The support member in the present embodiment includes an ink supply member and a head base and has a function as an ink supply member for supplying ink. However, the support member is not limited to this form, and the support member supports the inkjet head. It does not matter as long as it is formed as described above.

  In this embodiment, the resin reservoir member is fitted between the inkjet head and the head cover. However, the present invention is not limited to this configuration, and at least one of the inkjet head and the resin reservoir member, and the head cover and the resin reservoir member are bonded. It may be fixed by an agent.

  In this embodiment, one type of resin is used as the resin that fills the gap between the opening of the head cover and the inkjet head. However, the present invention is not limited to this, and a plurality of resins may be used. . For example, another resin may be filled after a soft resin such as a silicon-based resin is disposed on the surface of the resin reservoir member. With this configuration, the silicon-based resin is disposed at a portion along the U-shape of the cross-sectional shape of the resin reservoir member. Therefore, elasticity is generated in the silicon-based resin portion, and the resin reservoir member can be pressed against the head cover and the inkjet head. Alternatively, the curing shrinkage of the resin can be absorbed by the resin itself.

  The resin reservoir member in the present embodiment is formed of silicon resin, but is not limited to this form, and any material can be used. For example, another resin such as an epoxy resin, metal, or the like can be used.

  The resin reservoir member in the present embodiment is formed of a material having a Young's modulus smaller than that of the inkjet head or the head cover, but is not limited to this form. For example, the Young's modulus is smaller than that of either the inkjet head or the head cover. It may be made of a material.

(Embodiment 2)
With reference to FIG. 9 and FIG. 10, the ink jet apparatus according to the second embodiment of the present invention will be described. The ink jet apparatus according to the present embodiment is different from the first embodiment in the configuration of the resin reservoir member.

  FIG. 9 is an enlarged schematic cross-sectional view of a resin reservoir member portion of the ink jet apparatus according to the present embodiment. The ink jet apparatus in the present embodiment includes a resin reservoir member 6. The resin reservoir member 6 has a bottom 6a. The resin reservoir member 6 has a wall portion 6b and a wall portion 6c.

  The wall 6b is formed to be lower than the height of the surface of the inkjet head 1. The wall 6c is formed to be lower than the surface of the head cover 3.

  A resin reservoir member 6 is disposed in the gap between the inkjet head 1 and the head cover 3. Resin 13 is filled inside and above the resin reservoir member 6. The resin 13 is filled so that the upper surface is substantially flush with the surface of the head cover 3. The resin 13 is filled so that the surface is substantially flush with the surface of the inkjet head 1.

  The ink jet apparatus according to the present embodiment includes a blade 41 for removing ink remaining on the surfaces of the ink jet head 1 and the head cover 3. The blade 41 is formed so as to be in pressure contact with the head cover 3 and the surface of the inkjet head 1. The blade 41 has elasticity. The blade 41 is formed to be movable as indicated by an arrow 54.

  FIG. 10 shows an enlarged schematic cross-sectional view of a resin reservoir member portion of an ink jet apparatus as a comparative example in the present embodiment. The ink jet device as a comparative example includes a resin reservoir member 7. The resin reservoir member 7 has a bottom portion 7a, a wall portion 7b, and a wall portion 7c.

  The wall 7b is formed to be higher than the surface of the inkjet head 1. The wall 7c is formed to be higher than the surface of the head cover 3. A resin 12 is disposed inside the resin reservoir member 7.

  In an inkjet apparatus as a comparative example, wiping for removing ink is performed by a blade 41. When the blade 41 is moved in the direction shown by the arrow 54, the wall portion 7c is higher than the surface of the head cover 3, so that the ink 31 remains as shown by the A portion. If the wiping is continued, the wall portion 7b is higher than the surface of the inkjet head 1, so that the ink 31 remains as indicated by the B portion.

  There is a possibility that the remaining ink moves to the nozzle outlet of the inkjet head 1. When the remaining ink reaches the ink discharge port, it may adversely affect the landing accuracy of the ink discharged from the inkjet head and the amount of ink discharged. Alternatively, the remaining ink may fall during the movement of the inkjet head and fall on the substrate.

  Referring to FIG. 9, the ink jet apparatus according to the present embodiment is formed such that wall portion 6 c is lower than the surface of head cover 3, so that ink remains at the end of opening 3 a of head cover 3. Can be prevented. Further, since the wall 6b is formed to be lower than the surface of the inkjet head 1, it is possible to prevent ink from remaining at the end of the inkjet head 1.

  Since other configurations, operations, and effects are the same as those in the first embodiment, description thereof will not be repeated here.

(Embodiment 3)
With reference to FIGS. 11 to 13, an ink jet apparatus according to Embodiment 3 based on the present invention will be described. The ink jet apparatus according to the present embodiment is different from the first embodiment in the configuration of the resin reservoir member.

  FIG. 11 is a schematic cross-sectional view of the main part of the ink jet apparatus according to the present embodiment. The ink jet apparatus in the present embodiment includes a resin reservoir member 8. The resin 14 is filled inside the resin reservoir member 8. The ink jet apparatus includes a head cover 4.

  FIG. 12 shows an enlarged schematic cross-sectional view of a resin reservoir member portion of the ink jet apparatus according to the present embodiment. The resin reservoir member 8 in the present embodiment is formed of an elastic member. The resin reservoir member 8 has a bottom 8a. The resin reservoir member 8 has a wall portion 8b and a wall portion 8c.

  The resin reservoir member 8 has a wall portion 8 c in contact with the back surface of the head cover 4. The wall 8c is not in contact with the opening 4a. The resin reservoir member 8 is in close contact with the head cover 4 when the wall 8 c is pressed against the head cover 4. The wall portion 8 c is in pressure contact with the head cover 4. The end of the wall 8c is curved outward. The wall 8b is formed so as to be lower than the surface of the inkjet head 1.

  FIG. 13 is a process diagram for explaining the method of manufacturing the ink jet device according to the present embodiment. The resin reservoir member 8 has a U-shaped cross section. The outer diameter L2 between the wall portions 8c is formed to be larger than the diameter L1 of the opening 4a formed in the head cover 4. The opening 4 a is formed so as to expose all of the ink discharge ports formed in the inkjet head 1.

  As indicated by an arrow 55, the head cover 4 is moved toward the support member 2. The wall portion 8 b comes into contact with the outside of the opening portion 4 a of the head cover 4. By pressing the head cover 4 in the direction indicated by the arrow 55, the wall portion 8b can be curved outward and the wall portion 8b can be pressed against the head cover 4. In this state, the head cover 4 is fixed to the support member 2.

  Thereafter, the resin 14 is filled into the resin reservoir member 8. The resin 14 is filled so that the surface is substantially flush with the surface of the head cover 4. Further, the resin 14 is filled so that the surface is substantially flush with the surface of the inkjet head 1.

  In the ink jet apparatus according to the present embodiment, since one wall portion of the resin reservoir member is in pressure contact with the head cover 4, a gap is generated between the head cover 4 and the resin reservoir member 8, and the resin 14 is discharged from the gap. Inflow can be prevented more reliably.

  Since other configurations, operations, and effects are the same as those in the first and second embodiments, description thereof will not be repeated here.

(Embodiment 4)
With reference to FIGS. 14 to 16, an ink jet apparatus according to Embodiment 4 of the present invention will be described.

  FIG. 14 is a schematic cross-sectional view of the main part of the ink jet apparatus according to the present embodiment. FIG. 15 is a schematic plan view of the main part of the ink jet apparatus according to the present embodiment. The ink jet apparatus in the present embodiment includes an ink jet head 1 and a head cover 3. In addition, the ink jet apparatus according to the present embodiment includes a blade for wiping the surface of the ink jet head where the ink discharge ports are formed.

  In the present embodiment, a packing is disposed instead of the resin reservoir member. A packing 16 is disposed in the gap between the opening 3 a of the head cover 3 and the inkjet head 1.

  The packing 16 in the present embodiment is formed of a member having elasticity. The packing 16 in the present embodiment is formed so that the cross-sectional shape is a quadrangle. The packing 16 is formed so that the planar shape is a closed frame shape. The packing 16 is formed so that the planar shape is substantially rectangular. The packing 16 is formed so as to fill a gap between the inkjet head 1 and the opening 3a.

  FIG. 16 shows an enlarged schematic cross-sectional view of the packing portion of the ink jet apparatus according to the present embodiment. One surface of the packing 16 is in close contact with the inkjet head 1. The other surface of the packing 16 is in close contact with the opening 3 a of the head cover 3.

  The packing 16 in the present embodiment is formed so that the surface thereof is substantially flush with the head cover 3. The packing 16 is formed so that the surface thereof is substantially flush with the surface of the inkjet head 1.

  The ink jet apparatus according to the present embodiment does not require a resin disposed in the gap between the head cover and the ink jet head. Further, since the packing is in close contact with the opening of the head cover and the ink jet head, it is possible to prevent ink from flowing in between the head cover and the packing and between the ink jet head and the packing.

  Moreover, the packing in this Embodiment is formed with the material which has elasticity. With this configuration, the packing 16 can be pressed against the inkjet head 1 and the head cover 3, and ink can be prevented from flowing into the inkjet apparatus more reliably.

  Further, when the surface of the packing 16 is formed in substantially the same plane as the surface of the head cover 3 and the surface of the inkjet head 1, when wiping is performed in an inkjet apparatus having a blade for removing residual ink. Ink remaining can be prevented.

  Other configurations, operations, and effects are the same as those in the first to third embodiments, and thus description thereof will not be repeated here.

  In each drawing according to the above embodiment, the same or corresponding parts are denoted by the same reference numerals. Further, the term “upper” or “lower” in the embodiments does not indicate the vertical direction in the vertical direction but indicates the relative positional relationship between the members.

  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

2 is a schematic cross-sectional view of a main part of the ink jet apparatus according to Embodiment 1. FIG. 2 is a schematic plan view of a main part of the ink jet apparatus according to Embodiment 1. FIG. 3 is an enlarged schematic cross-sectional view of a resin reservoir member portion of the ink jet apparatus according to Embodiment 1. FIG. 5 is a schematic cross-sectional view illustrating a first step of the method for manufacturing the ink jet device according to Embodiment 1. FIG. 6 is a schematic cross-sectional view illustrating a second step of the method for manufacturing the ink jet device according to Embodiment 1. FIG. 6 is a schematic cross-sectional view illustrating a third step of the method for manufacturing the ink jet device according to Embodiment 1. FIG. 5 is a schematic cross-sectional view illustrating a fourth step of the method for manufacturing the ink jet device according to Embodiment 1. FIG. 6 is a schematic cross-sectional view illustrating a fifth step of the method of manufacturing the ink jet device according to Embodiment 1. FIG. 6 is an enlarged schematic cross-sectional view of a portion of a resin reservoir member of an ink jet device according to Embodiment 2. FIG. 6 is an enlarged schematic cross-sectional view of a portion of a resin reservoir member of a comparative example in Embodiment 2. FIG. 5 is a schematic cross-sectional view of a main part of an ink jet device according to Embodiment 3. FIG. 6 is an enlarged schematic cross-sectional view of a resin reservoir member portion of an ink jet apparatus according to Embodiment 3. FIG. 6 is a schematic cross-sectional view illustrating a method for manufacturing the ink jet device according to Embodiment 3. FIG. 6 is a schematic cross-sectional view of a main part of an ink jet device according to Embodiment 4. FIG. 6 is a schematic plan view of a main part of an ink jet apparatus according to Embodiment 4. FIG. 6 is an enlarged schematic cross-sectional view of a packing portion of an ink jet device according to Embodiment 4. FIG. It is a schematic sectional drawing of the principal part of the inkjet apparatus based on a prior art. It is a schematic plan view of the principal part of the inkjet apparatus based on a prior art. It is a schematic sectional drawing explaining the manufacturing method of the inkjet apparatus based on a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Inkjet head, 1a Ink discharge port, 1b Ink flow path, 2 Support member, 2a Ink supply pipe, 2b Recessed part, 3, 4 Head cover, 3a, 4a Opening part, 5-8 Resin reservoir member, 5a-8a Bottom part, 5b -8b, 5c-8c Wall, 10-14 resin, 15 O-ring, 16 packing, 21 ink supply member, 22 head base, 31 ink, 41 blade, 45, 46 crack, 51-57 arrow.

Claims (6)

An inkjet head;
A support member for supporting the inkjet head;
A head cover disposed on an upper surface of the support member and having an opening;
A resin reservoir member for storing resin that closes the gap between the opening and the inkjet head;
The inkjet head is disposed such that an ink discharge port is exposed from the opening,
The resin reservoir member is disposed between the opening and the inkjet head,
The resin reservoir member is formed in a frame shape with a closed planar shape,
The resin reservoir member is formed in a U shape having a cross-sectional shape having one bottom portion and two wall portions,
The resin reservoir member is arranged so that the U-shaped opening faces outward,
An ink jet apparatus in which the resin is filled inside the U-shape.   The inkjet apparatus according to claim 1, wherein the resin reservoir member is formed of a material having a Young's modulus smaller than that of the inkjet head or the head cover. A blade for wiping the ink remaining on the surface of the ink jet head where the ink discharge port is formed;
The resin reservoir member is formed such that the end surface of one wall portion is lower than the surface of the inkjet head,
The resin reservoir member is formed so that the end surface of the other wall portion is lower than the surface of the head cover,
The inkjet apparatus according to claim 1, wherein the resin is filled so that a surface thereof is substantially flush with a surface of the inkjet head and a surface of the head cover. The resin reservoir member is formed of an elastic member,
The inkjet apparatus according to claim 1, wherein the resin reservoir member is pressed against the head cover so that one of the wall portions is in pressure contact with the head cover. An inkjet head;
A support member for supporting the inkjet head;
A head cover disposed on an upper surface of the support member and having an opening;
It has a frame-shaped packing with a closed planar shape,
The inkjet head is disposed such that an ink discharge port is exposed from the opening,
The packing is disposed between the opening and the inkjet head,
The packing is an ink jet apparatus in close contact with the opening and the ink jet head.   The inkjet device according to claim 5, wherein the packing is made of an elastic material.

Images