WO2023276416A1 - ヘッドユニットおよびインクジェットプリンタ - Google Patents
ヘッドユニットおよびインクジェットプリンタ Download PDFInfo
- Publication number
- WO2023276416A1 WO2023276416A1 PCT/JP2022/017989 JP2022017989W WO2023276416A1 WO 2023276416 A1 WO2023276416 A1 WO 2023276416A1 JP 2022017989 W JP2022017989 W JP 2022017989W WO 2023276416 A1 WO2023276416 A1 WO 2023276416A1
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- WIPO (PCT)
- Prior art keywords
- head
- inkjet
- opening
- base member
- heads
- Prior art date
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- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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Classifications
-
- 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
Definitions
- the present invention relates to a head unit having a plurality of inkjet heads.
- the present invention also relates to an inkjet printer having such a head unit.
- an inkjet printer that prints by ejecting ink onto a print medium is known (see, for example, Patent Document 1).
- the inkjet printer described in Patent Document 1 includes two inkjet heads, a head holding mechanism that holds the two inkjet heads, and a carriage on which the two inkjet heads and the head holding mechanism are mounted.
- the two inkjet heads are arranged at positions shifted from each other in the main scanning direction.
- the inkjet head ejects ink downward.
- the lower surface of the inkjet head serves as a nozzle surface on which a plurality of nozzles for ejecting ink are formed.
- the head holding mechanism has a base member fixed to the carriage.
- the base member is formed with openings (through holes) for exposing the nozzle surface of the inkjet head.
- two inkjet heads are arranged at the same position in the sub-scanning direction. That is, in FIG. 4 and the like of Patent Document 1, two inkjet heads are arranged in-line.
- two inkjet heads are arranged at positions shifted from each other in the sub-scanning direction. That is, in FIG. 10 and the like of Patent Document 1, two inkjet heads are arranged in a staggered manner.
- the position of the opening formed in the base member changes depending on whether the two inkjet heads are arranged inline or staggered. Therefore, in the case of performing the inline arrangement and the staggered arrangement of the inkjet heads in this inkjet printer, a base member for inline arrangement having openings formed at positions corresponding to the ink jet heads to be arranged inline and a staggered arrangement are required. A staggered base member having openings formed at positions corresponding to the ink jet heads is required. Therefore, the versatility of the base member is reduced.
- an object of the present invention is to provide a head unit having a plurality of inkjet heads and a base member to which the plurality of inkjet heads are attached.
- a head unit capable of enhancing versatility and easily switching from in-line arrangement to staggered arrangement and from staggered arrangement to in-line arrangement.
- Another object of the present invention is to provide an inkjet printer having such a head unit.
- the head unit of the present invention includes a plurality of inkjet heads having a nozzle surface formed with a plurality of nozzles for ejecting ink, a carriage on which the plurality of inkjet heads are mounted, and a head unit fixed to the carriage. and a base member to which the plurality of inkjet heads are attached, the base member having the nozzle surface side portions of the plurality of inkjet heads attached thereto, and for exposing the nozzle surfaces of the plurality of inkjet heads.
- a plurality of openings are formed, a predetermined inkjet head among the plurality of inkjet heads is called a first inkjet head, an inkjet head other than the first inkjet head among the plurality of inkjet heads is called a second inkjet head, and a first inkjet head is called a first inkjet head.
- the opening for exposing the nozzle surface of the inkjet head is the first opening
- the width of the first opening in the sub-scanning direction perpendicular to the main scanning direction, which is the movement direction of the carriage, and the vertical direction is the first opening in the sub-scanning direction.
- the width is set so that the inkjet head can be arranged.
- the first opening for exposing the nozzle surface of the first inkjet head is formed in the base member.
- the first inkjet head is arranged at a first position where the head and the second inkjet head are arranged at the same position, and a second position where the first inkjet head and the second inkjet head are arranged at positions shifted in the sub-scanning direction. is set to a width that can be placed.
- the first inkjet head and the second inkjet head are arranged at the same position in the sub-scanning direction using a common base member, and the first inkjet head and the second inkjet head are arranged in the sub-scanning direction. It becomes possible to arrange them at positions shifted in the scanning direction. That is, according to the present invention, it is possible to use a common base member for in-line arrangement and staggered arrangement of the first inkjet head and the second inkjet head. Therefore, in the present invention, it is possible to increase the versatility of the base member even when the inkjet heads are arranged in-line or staggered.
- the first inkjet head and the second inkjet head can be arranged in-line and staggered using a common base member. There is no need to replace the base member when switching the arrangement of the heads and when switching the arrangement of the inkjet heads from the staggered arrangement to the in-line arrangement. Therefore, in the present invention, even when the inline arrangement and the staggered arrangement of the inkjet heads are performed, it is possible to easily switch from the inline arrangement to the staggered arrangement and from the staggered arrangement to the inline arrangement.
- the head unit preferably has a closing member for closing the portion of the first opening where the first inkjet head is not arranged.
- two inkjet heads, a first inkjet head and a second inkjet head are attached to the base member, and two openings are formed.
- the width of the first opening, which is an opening, in the sub-scanning direction is wider than the width of the other opening in the sub-scanning direction.
- the head unit preferably includes a first adjustment member for finely adjusting the position of at least one of the plurality of inkjet heads in the sub-scanning direction with respect to the base member. Further, in the present invention, the head unit finely adjusts the position of at least one of the plurality of inkjet heads relative to the base member in the rotation direction with the vertical direction as the rotation axis direction. Preferably, a second adjustment member is provided for. With this configuration, it is possible to suppress misalignment of the inkjet head with respect to the base member and misalignment between the plurality of inkjet heads. Therefore, it is possible to improve the print quality of the inkjet printer.
- the head unit of the present invention can be used in an inkjet printer equipped with a carriage drive mechanism that moves the carriage in the main scanning direction.
- this inkjet printer it is possible to increase the versatility of the base member even when the inkjet heads are arranged in-line or in a staggered arrangement. It is possible to easily switch to
- the inkjet printer performs printing on a print medium (that is, performs two-dimensional printing) while the first inkjet head is arranged at the first position or the second position, and the first inkjet head A three-dimensional structure is manufactured in a state of being arranged at the first position.
- a print medium that is, performs two-dimensional printing
- the first inkjet head is arranged at the first position or the second position
- the first inkjet head A three-dimensional structure is manufactured in a state of being arranged at the first position.
- the primary colors such as CMYK
- special colors such as light color and orange
- Printing on print media with ink is facilitated.
- the inkjet printer prints on the print medium while the first inkjet head is located at the second position, so that it is possible to enjoy the benefits of the staggered arrangement.
- an inkjet printer manufactures three-dimensional modeling, in addition to color ink, it is necessary to use more types of ink than two-dimensional printing, such as model materials and support materials.
- three-dimensional modeled object By manufacturing a three-dimensional modeled object in a state of being arranged at one position, it becomes possible to eject many types of ink in-line. That is, in this case, it can be a suitable configuration as an inkjet printer that performs both printing on a printing medium and manufacturing of three-dimensional modeling.
- an inkjet head that ejects color ink and an inkjet head that ejects support material are staggered when manufacturing three-dimensional modeling, the meaning of the support material is lost.
- the present invention it is possible to increase the versatility of the base member to which a plurality of inkjet heads are attached, even when the inkjet heads are arranged in-line or in a staggered arrangement. Switching to a staggered arrangement and switching from a staggered arrangement to an in-line arrangement can be easily performed.
- FIG. 1 is a perspective view of an inkjet printer according to an embodiment of the invention
- FIG. 2 is a schematic diagram for explaining the configuration of the inkjet printer shown in FIG. 1
- FIG. 3 is a plan view for explaining the configuration of the head unit shown in FIG. 2
- FIG. 3 is a plan view for explaining the configuration of the head unit shown in FIG. 2
- FIG. 4 is a plan view of the base member shown in FIG. 3
- FIG. 8 is a plan view for explaining the configuration of a head unit according to another embodiment of the invention
- FIG. 8 is a plan view for explaining the configuration of a head unit according to another embodiment of the invention
- FIG. 1 is a perspective view of an inkjet printer 1 according to an embodiment of the invention.
- FIG. 2 is a schematic diagram for explaining the configuration of the inkjet printer 1 shown in FIG.
- the inkjet printer 1 of the present embodiment (hereinafter referred to as "printer 1") is, for example, an inkjet printer for business use, and prints on the print medium 2. That is, the printer 1 performs two-dimensional printing.
- the printing medium 2 is, for example, printing paper, cloth, resin film, or the like.
- a printer 1 includes a plurality of inkjet heads 3 and 4 that eject ink toward a print medium 2 .
- a printer 1 of this embodiment includes two inkjet heads 3 and 4, an inkjet head 3 as a first inkjet head and an inkjet head 4 as a second inkjet head.
- the inkjet head 3 will be referred to as "head 3" and the inkjet head 4 will be referred to as "head 4".
- the printer 1 also includes a carriage 5 on which two heads 3 and 4 are mounted, a carriage driving mechanism 6 that moves the carriage 5 in the main scanning direction (the Y direction in FIG. 1, etc.), and the carriage 5 in the main scanning direction. a platen 8 on which the print medium 2 is placed during printing; and a vertical direction (Z direction in FIG. 1 etc.) and a sub-scanning direction (X ), and a plurality of ink tanks 10 containing ink to be supplied to the heads 3 and 4 .
- the carriage drive mechanism 6 includes, for example, two pulleys, a belt that is stretched over the two pulleys and partially fixed to the carriage 5, and a motor that rotates the pulleys.
- the medium feeding mechanism 9 includes, for example, a drive roller that contacts one surface of the print medium 2, a driven roller that is arranged to face the drive roller and contacts the other surface of the print medium 2, and a motor that rotates the drive roller. etc.
- the heads 3 and 4 mounted on the carriage 5 are arranged at positions shifted from each other in the main scanning direction.
- the head 3 and the head 4 are formed in the same shape.
- the heads 3 and 4 mounted on the carriage 5 eject ink toward the upper surface of the print medium 2 mounted on the platen 8 . That is, the heads 3 and 4 eject ink downward.
- a plurality of nozzles for ejecting ink are formed on the lower surface of the head 3 .
- a lower surface of the head 3 serves as a nozzle surface 3a on which a plurality of nozzles are formed.
- a plurality of nozzles for ejecting ink are formed on the lower surface of the head 4, and the lower surface of the head 4 serves as a nozzle surface 4a on which a plurality of nozzles are formed.
- the nozzle surfaces 3a and 4a are formed, for example, in a rectangular shape. Further, for example, the long-side direction of the rectangular nozzle surfaces 3a and 4a coincides with the sub-scanning direction, and the short-side direction of the nozzle surfaces 3a and 4a coincides with the main scanning direction.
- the nozzle surfaces 3a and 4a are formed with a nozzle row composed of a plurality of nozzles arranged in the sub-scanning direction. For example, four nozzle rows arranged in the main scanning direction are formed on the nozzle surfaces 3a and 4a.
- the printer 1 also includes a base member 14 fixed to the carriage 5 and to which the two heads 3 and 4 are attached.
- a head unit 15 is composed of the heads 3 and 4, the carriage 5, the base member 14, and the like. The configuration of the head unit 15 will be described below.
- FIG. 3 and 4 are plan views for explaining the configuration of the head unit 15 shown in FIG. 2.
- FIG. 5 is a plan view of the base member 14 shown in FIG. 3.
- the main scanning direction (Y direction) will be referred to as the "horizontal direction”
- the sub-scanning direction (X direction) will be referred to as the "front-to-back direction.”
- the X1 direction side in FIG. 3 etc. which is one side in the front-rear direction, is the "front" side
- the opposite side, the X2 direction side in FIG. 3 etc. is the "rear" side.
- the head unit 15 includes the base member 14 as described above.
- the base member 14 is fixed to the lower end of the carriage 5 and constitutes the lower end of the head unit 15 .
- the head unit 15 includes a head holding member 16 to which the lower end portion of the head 3 is fixed, a head holding member 17 to which the lower end portion of the head 4 is fixed, and a front-rear direction (secondary direction) of the head 4 with respect to the base member 14 .
- the eccentric cam 18 for finely adjusting the position (scanning direction) and the position (rotational angle) of the head 3 relative to the base member 14 in the rotational direction with the vertical direction as the axial direction of rotation is finely adjusted.
- an eccentric cam 19 for The eccentric cam 18 of this embodiment is the first adjusting member, and the eccentric cam 19 is the second adjusting member.
- the head holding members 16 and 17 are, for example, rectangular flat plates.
- the head holding member 16 and the head holding member 17 are formed in the same shape, for example.
- the outer shape of the head holding members 16 and 17 when viewed from above and below is larger than the outer shape of the heads 3 and 4 .
- the head holding members 16 and 17 are fixed to the upper surface side of the base member 14 by screws (not shown).
- the head holding members 16, 17 are fixed to the base member 14 by two, three or four screws.
- the head holding member 16 rotates vertically with respect to the base member 14. becomes rotatable. Further, when the screw for fixing the head holding member 17 to the base member 14 is loosened (or the screw is removed), the head holding member 17 becomes movable in the front-rear direction with respect to the base member 14 .
- the lower end of the head 3 is fixed to the head holding member 16 , and the lower end of the head 3 is attached to the base member 14 via the head holding member 16 .
- the lower end of the head 4 is fixed to the head holding member 17 , and the lower end of the head 4 is attached to the base member 14 via the head holding member 17 . That is, to the base member 14, a portion of the head 3 on the side of the nozzle surface 3a is attached via a head holding member 16, and a portion of the head 4 on the side of the nozzle surface 4a is attached via a head holding member 17. .
- the head holding member 16 is formed with an opening (not shown) for exposing the nozzle surface 3 a of the head 3 on the lower surface side of the head unit 15 .
- the head holding member 17 is formed with an opening (not shown) for exposing the nozzle surface 4 a of the head 4 on the lower surface side of the head unit 15 .
- the openings of the head holding members 16 and 17 pass through the head holding members 16 and 17 in the vertical direction.
- the openings of the head holding members 16 and 17 are, for example, rectangular.
- the width of the openings of the head holding members 16 and 17 in the front-rear direction is slightly wider than the width of the nozzle surfaces 3a and 4a in the front-rear direction. It is slightly wider than the lateral width of 3a and 4a.
- the base member 14 has an opening 14a for exposing the nozzle surface 3a of the head 3 on the lower surface side of the head unit 15 and an opening 14b for exposing the nozzle surface 4a of the head 4 on the lower surface side of the head unit 15. formed. That is, the base member 14 is formed with two openings 14a and 14b for exposing the nozzle surfaces 3a and 4a of the two heads 3 and 4, respectively.
- the opening 14a of this embodiment is a first opening for exposing the nozzle surface 3a of the head 3, which is the first inkjet head.
- the openings 14a and 14b pass through the base member 14 in the vertical direction.
- the openings 14a and 14b are formed in a rectangular shape.
- the opening 14a and the opening 14b are formed adjacent to each other in the left-right direction.
- the width of the opening 14a in the left-right direction is equal to the width of the opening 14b in the left-right direction.
- the lateral width of the openings 14a and 14b is slightly wider than the lateral width of the nozzle surfaces 3a and 4a.
- the width of the opening 14b in the front-rear direction is slightly wider than the width of the nozzle surface 4a in the front-rear direction.
- the width of the opening 14a in the front-rear direction is the first position 3A (see FIG. 3) at which the heads 3 and 4 are arranged at the same position in the front-rear direction (that is, the heads 3 and 4 are arranged inline), and the width at the front-rear direction.
- the width is set so that the head 3 can be arranged at the second position 3B (see FIG. 4) where the heads 3 and 4 are arranged at positions shifted in the direction (that is, the heads 3 and 4 are staggered). It is That is, the width of the opening 14a in the front-rear direction is wider than the width of the opening 14b in the front-rear direction.
- the width of the opening 14a in the front-rear direction is approximately 1.5 times the width of the opening 14b in the front-rear direction.
- the printer 1 prints on the print medium 2 with the head 3 positioned at the first position 3A or the head 3 positioned at the second position 3B.
- the rear end of the opening 14a and the rear end of the opening 14b are arranged at the same position in the front-rear direction. That is, the front end of the opening 14a is located forward of the front end of the opening 14b. Therefore, the head 3 arranged at the second position 3B is shifted forward with respect to the head 4 .
- a portion of the opening 14 a where the head 3 is not arranged is covered with a closing member 21 .
- the head unit 15 includes a closing member 21 for closing a portion of the opening 14a where the head 3 is not arranged.
- the closing member 21 is formed in, for example, a rectangular flat plate shape.
- the closing member 21 is fixed to the upper surface of the base member 14 by screws (not shown).
- the closing member 21 closes the front portion of the opening 14a when the head 3 is arranged at the first position 3A (see FIG. 3), and closes the rear portion of the opening 14a when the head 3 is arranged at the second position 3B. Cover the side parts (see Figure 4).
- the eccentric cam 18 is attached to the base member 14.
- the eccentric cam 18 is rotatable with respect to the base member 14 with the vertical direction being the axial direction of rotation.
- the eccentric cam 18 is arranged on the front side of the head holding member 17 .
- the eccentric cam 18 is urged toward the head holding member 17 in the rotational direction of the eccentric cam 18 with respect to the base member 14 by a spring member (not shown). is in contact with the front end face of the with a predetermined contact pressure. 4, illustration of the eccentric cam 18 is omitted.
- the head holding member 17 is biased forward by a spring member (not shown).
- a spring member not shown.
- the eccentric cam 18 When the eccentric cam 18 is rotated with the screw for fixing the head holding member 17 to the base member 14 loosened (or unscrewed), the head holding member 17 moves back and forth with respect to the base member 14 . move in the direction That is, when the eccentric cam 18 is rotated with the screw for fixing the head holding member 17 to the base member 14 loosened (or unscrewed), the head 4 is moved together with the head holding member 17. It moves in the front-rear direction with respect to the base member 14 .
- the eccentric cam 19 is attached to the base member 14.
- the eccentric cam 19 is rotatable with respect to the base member 14 with the vertical direction being the axial direction of rotation.
- the eccentric cam 19 is arranged, for example, on one side of the head holding member 16 in the left-right direction.
- the eccentric cam 19 is urged toward the head holding member 16 in the rotational direction of the eccentric cam 19 with respect to the base member 14 by a spring member (not shown). is in contact with one end surface in the left-right direction with a predetermined contact pressure.
- the head holding member 16 is urged toward the eccentric cam 19 in the rotational direction of the head holding member 16 with respect to the base member 14 by a spring member (not shown).
- a spring member not shown.
- the eccentric cam 19 is rotated with the screw for fixing the head holding member 16 to the base member 14 loosened (or unscrewed)
- the head holding member 16 moves up and down with respect to the base member 14 . It rotates with the direction as the axial direction of rotation. That is, when the eccentric cam 19 is rotated with the screw for fixing the head holding member 16 to the base member 14 loosened (or unscrewed), the head 3 is moved together with the head holding member 16. It rotates with respect to the base member 14 with the vertical direction as the axial direction of rotation.
- the fulcrum shaft 22 that rotatably supports the rear end of the head holding member 16 is the center of rotation.
- the head holding member 16 and the head 3 rotate with respect to the base member 14 .
- the head unit 15 also includes an eccentric cam 19 that rotates the head 3 together with the head holding member 16 when the head 3 is placed at the second position 3B (not shown in FIGS. 3 and 4). omit). That is, the head unit 15 includes an eccentric cam 19 that rotates the head holding member 16 when the head 3 is arranged at the first position 3A, and a head holding member 19 when the head 3 is arranged at the second position 3B. It has two eccentric cams 19 with one eccentric cam 19 for rotating the member 16 . The two eccentric cams 19 are arranged at positions shifted from each other in the front-rear direction.
- the width of the opening 14a formed in the base member 14 in the front-rear direction is such that the heads 3 and 4 are arranged at the same position in the front-rear direction (that is, the heads 3 and 4 are arranged at the same position in the front-rear direction).
- the head 3 is placed at a first position 3A where the heads 3 and 4 are arranged in-line) and a second position 3B where the heads 3 and 4 are arranged at positions shifted in the front-rear direction (that is, the heads 3 and 4 are staggered). It is set to a width that allows placement. Therefore, in this embodiment, using the common base member 14, the heads 3 and 4 can be arranged in-line and staggered. Therefore, in this embodiment, the versatility of the base member 14 can be enhanced even when the heads 3 and 4 are arranged in-line or staggered.
- the heads 3 and 4 can be arranged in-line and staggered by using the common base member 14. Therefore, it is possible to arrange the heads 3 and 4 from the in-line arrangement to the staggered arrangement. and when switching the arrangement of the heads 3, 4 from the staggered arrangement to the in-line arrangement, the base member 14 need not be replaced. Therefore, in this embodiment, even when the heads 3 and 4 are arranged in-line and staggered, it is possible to easily switch from the in-line arrangement to the staggered arrangement and from the staggered arrangement to the in-line arrangement. Become.
- the printer 1 prints on the print medium 2 while the head 3 is located at the first position 3A. It becomes easy to print on the print medium 2 using the . Further, by printing on the print medium 2 with the printer 1 in a state where the head 3 is arranged at the second position 3B, it is possible to enjoy the advantage of the staggered arrangement.
- the portion of the opening 14a where the head 3 is not arranged is closed by the closing member 21. Therefore, in this embodiment, even if the width of the opening 14a in the front-rear direction is widened in order to enable the in-line arrangement and the staggered arrangement of the heads 3 and 4, it is possible to prevent dust and ink mist from entering the carriage 5 from the opening 14a. intrusion can be prevented.
- the head unit 15 includes an eccentric cam 18 for finely adjusting the position of the head 4 in the front-rear direction with respect to the base member 14 and an eccentric cam 18 for finely adjusting the rotational angle of the head 3 with respect to the base member 14 . and an eccentric cam 19 of . Therefore, in this embodiment, it is possible to suppress positional deviation of the heads 3 and 4 with respect to the base member 14 and positional deviation between the heads 3 and 4 . Therefore, in this embodiment, it is possible to improve the print quality of the printer 1 .
- the width of the opening 14a in the front-rear direction may be wider.
- the rear end of the head 3 arranged at the second position 3B can be arranged behind the front end of the head 4, and FIG. As shown in B), the rear end of the head 3 placed at the second position 3B can be placed forward of the front end of the head 4 . That is, in the example shown in FIG. 6, the head 3 can be arranged more flexibly.
- the head unit 15 includes a closing member 21 for closing a portion of the opening 14a on the front side of the head holding member 16, and a closing member 21 for closing a portion of the opening 14a on the rear side of the head holding member 16. and may be provided.
- the front end of the opening 14a and the front end of the opening 14b may be arranged at the same position in the front-rear direction, and the rear end of the opening 14a may be arranged behind the rear end of the opening 14b.
- the head 3 arranged at the second position 3B is shifted rearward with respect to the head 4 .
- the width of the opening 14b in the front-rear direction may be substantially the same as the width of the opening 14a in the front-rear direction.
- the head 3 arranged at the second position 3B may be shifted forward or backward with respect to the head 4 .
- the number of inkjet heads mounted on the carriage 5 may be three or more.
- three or more inkjet heads are attached to the base member 14
- the base member 14 has an opening for exposing the nozzle surfaces of the plurality of inkjet heads on the lower surface side of the head unit 15 .
- a plurality of apertures are formed.
- four inkjet heads are attached to the base member 14.
- the base member 14 has four openings 14a for exposing nozzles of the four inkjet heads. 14b, 14c and 14d are formed.
- the opening 14b, the opening 14a, the opening 14d, and the opening 14c are formed in this order from one side to the other side in the left-right direction.
- the opening 14c is formed in the same shape as the opening 14a
- the opening 14d is formed in the same shape as the opening 14b.
- the widths of the openings 14a and 14c in the front-rear direction are wider than the widths of the openings 14b and 14d in the front-rear direction.
- the openings 14a and 14c are the first openings
- the inkjet head whose nozzle surface is exposed through the openings 14a and 14c is the first inkjet head.
- the inkjet head whose nozzle surface is exposed through the openings 14b and 14d is the second inkjet head.
- the opening 14b, the opening 14a, the opening 14c, and the opening 14d may be formed in this order from one side to the other side in the left-right direction.
- the head unit 15 may include an adjustment member for adjusting the height of the heads 3 and 4 with respect to the base member 14, and the horizontal rotation of the heads 3 and 4 with respect to the base member 14.
- An adjustment member may be provided for adjusting the position in the rotational direction, which is the axial direction of movement.
- the adjustment member in these cases is, for example, a screw that engages the base member 14 .
- the head unit 15 may not include the eccentric cam 18 or may not include the eccentric cam 19 .
- the portion of the opening 14a where the head 3 is not arranged may not be covered with the closing member 21. That is, the head unit 15 does not have to include the closing member 21 .
- the lower ends of the heads 3 and 4 may be directly attached to the base member 14 .
- the printer 1 includes a table on which the print medium 2 is placed, and a table drive mechanism for moving the table in at least one of the front-back direction and the up-down direction instead of the platen 8 and the medium feeding mechanism 9. mechanism.
- the printer 1 may be a 3D printer that manufactures three-dimensional objects.
- the printer 1 has a table on which the three-dimensional model is placed.
- the printer 1 manufactures a three-dimensional modeled object in a state in which the head 3 is arranged at the first position 3A.
- the printer 1 manufactures three-dimensional modeling, in addition to color ink, it is necessary to use more types of ink than two-dimensional printing, such as model materials and support materials.
- the printer 1 having the head unit 15 can have a suitable configuration as a printer that performs both printing on the printing medium 2 and manufacturing of three-dimensional modeling.
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- Ink Jet (AREA)
Abstract
Description
図1は、本発明の実施の形態にかかるインクジェットプリンタ1の斜視図である。図2は、図1に示すインクジェットプリンタ1の構成を説明するための概略図である。
図3、図4は、図2に示すヘッドユニット15の構成を説明するための平面図である。図5は、図3に示すベース部材14の平面図である。以下の説明では、主走査方向(Y方向)を「左右方向」とし、副走査方向(X方向)を「前後方向」とする。また、前後方向の一方側である図3等のX1方向側を「前」側とし、その反対側である図3等のX2方向側を「後ろ」側とする。
以上説明したように、本形態では、ベース部材14に形成される開口14aの前後方向の幅は、前後方向においてヘッド3とヘッド4とが同じ位置に配置される(すなわち、ヘッド3、4がインライン配置される)第1位置3Aと、前後方向においてヘッド3とヘッド4とがずれた位置に配置される(すなわち、ヘッド3、4がスタガ配置される)第2位置3Bとにヘッド3が配置可能となる幅に設定されている。そのため、本形態では、共通のベース部材14を用いて、ヘッド3、4をインライン配置すること、および、スタガ配置することが可能になる。したがって、本形態では、ヘッド3、4のインライン配置とスタガ配置とを行う場合であっても、ベース部材14の汎用性を高めることが可能になる。
上述した形態は、本発明の好適な形態の一例ではあるが、これに限定されるものではなく本発明の要旨を変更しない範囲において種々変形実施が可能である。
3 ヘッド(インクジェットヘッド、第1インクジェットヘッド)
3A 第1位置
3B 第2位置
3a ノズル面
4 ヘッド(インクジェットヘッド、第2インクジェットヘッド)
4a ノズル面
5 キャリッジ
6 キャリッジ駆動機構
14 ベース部材
14a、14c 開口(第1開口)
14b、14d 開口
15 ヘッドユニット
18 偏心カム(第1調整部材)
19 偏心カム(第2調整部材)
21 閉塞部材
X 副走査方向
Y 主走査方向
Z 上下方向
Claims (7)
- インクを吐出する複数のノズルが形成されるノズル面を有する複数のインクジェットヘッドと、複数の前記インクジェットヘッドが搭載されるキャリッジと、前記キャリッジに固定されるとともに複数の前記インクジェットヘッドが取り付けられるベース部材とを備え、
前記ベース部材には、複数の前記インクジェットヘッドの前記ノズル面側の部分が取り付けられるとともに、複数の前記インクジェットヘッドのそれぞれの前記ノズル面を露出させるための複数の開口が形成され、
複数の前記インクジェットヘッドのうちの所定の前記インクジェットヘッドを第1インクジェットヘッドとし、複数の前記インクジェットヘッドのうちの前記第1インクジェットヘッドを除いた前記インクジェットヘッドを第2インクジェットヘッドとし、前記第1インクジェットヘッドの前記ノズル面を露出させるための前記開口を第1開口とすると、
前記キャリッジの移動方向となる主走査方向と上下方向とに直交する副走査方向における前記第1開口の幅は、副走査方向において前記第1インクジェットヘッドと前記第2インクジェットヘッドとが同じ位置に配置される第1位置と、副走査方向において前記第1インクジェットヘッドと前記第2インクジェットヘッドとがずれた位置に配置される第2位置とに前記第1インクジェットヘッドが配置可能となる幅に設定されていることを特徴とするヘッドユニット。 - 前記第1開口の、前記第1インクジェットヘッドが配置されていない部分を塞ぐための閉塞部材を備えることを特徴とする請求項1記載のヘッドユニット。
- 前記ベース部材には、前記第1インクジェットヘッドと前記第2インクジェットヘッドとの2個の前記インクジェットヘッドが取り付けられるとともに、2個の前記開口が形成され、
2個の前記開口のうちの、一方の前記開口である前記第1開口の副走査方向の幅は、他方の前記開口の副走査方向の幅よりも広くなっていることを特徴とする請求項1記載のヘッドユニット。 - 前記ベース部材に対して、複数の前記インクジェットヘッドのうちの少なくとも1個の前記インクジェットヘッドの副走査方向における位置を微調整するための第1調整部材を備えることを特徴とする請求項1記載のヘッドユニット。
- 前記ベース部材に対して、複数の前記インクジェットヘッドのうちの少なくとも1個の前記インクジェットヘッドの、上下方向を回動の軸方向とする回動方向における位置を微調整するための第2調整部材を備えることを特徴とする請求項1記載のヘッドユニット。
- 請求項1記載のヘッドユニットと、前記キャリッジを主走査方向に移動させるキャリッジ駆動機構とを備えることを特徴とするインクジェットプリンタ。
- 前記第1インクジェットヘッドが前記第1位置または前記第2位置に配置されている状態で印刷媒体に印刷を行い、前記第1インクジェットヘッドが前記第1位置に配置されている状態で三次元造形物を製造することを特徴とする請求項6記載のインクジェットプリンタ。
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JP2006231802A (ja) * | 2005-02-28 | 2006-09-07 | Seiko Instruments Inc | ヘッド支持構造体、記録装置およびその製造方法 |
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JP2018176433A (ja) * | 2017-04-03 | 2018-11-15 | 株式会社ミマキエンジニアリング | 画像形成装置 |
JP2020163583A (ja) * | 2019-03-28 | 2020-10-08 | ブラザー工業株式会社 | 液体吐出装置 |
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