WO2022158308A1 - インクジェットプリンタ - Google Patents
インクジェットプリンタ Download PDFInfo
- Publication number
- WO2022158308A1 WO2022158308A1 PCT/JP2022/000291 JP2022000291W WO2022158308A1 WO 2022158308 A1 WO2022158308 A1 WO 2022158308A1 JP 2022000291 W JP2022000291 W JP 2022000291W WO 2022158308 A1 WO2022158308 A1 WO 2022158308A1
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- WIPO (PCT)
- Prior art keywords
- carriage
- rotation
- head
- holding member
- lever member
- Prior art date
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- 230000007246 mechanism Effects 0.000 claims abstract description 116
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
- B41J25/316—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with tilting motion mechanisms relative to paper surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/14—Character- or line-spacing mechanisms with means for effecting line or character spacing in either direction
- B41J19/142—Character- or line-spacing mechanisms with means for effecting line or character spacing in either direction with a reciprocating print head printing in both directions across the paper width
Definitions
- the present invention relates to an inkjet printer that prints by ejecting ink.
- an inkjet printer (inkjet device) that prints by ejecting ink onto a medium
- the inkjet printer described in Patent Document 1 includes a plurality of inkjet heads that eject ink toward a medium, a carriage on which the plurality of inkjet heads are mounted, and a guide mechanism for moving the carriage in the main scanning direction.
- the carriage is composed of a rear portion forming the rear surface of the carriage, a bottom portion forming the bottom surface of the carriage, and two side portions forming side surfaces of the carriage in the main scanning direction.
- the back portion is fixed to the driving portion of the guide mechanism.
- Multiple inkjet printers are mounted on the bottom.
- the carriage has a bottom surface height for adjusting the inclination of the bottom surface portion in the rotational direction with the sub-scanning direction perpendicular to the main scanning direction and the vertical direction as the rotational axis direction.
- a position adjusting section and a ⁇ angle adjusting section for adjusting the inclination of the bottom portion in the rotation direction with the main scanning direction as the rotation axis direction are provided. Therefore, in this inkjet printer, the inclination of the plurality of inkjet heads mounted on the carriage in the rotation direction with the sub-scanning direction as the rotation axis direction, and the rotation with the main scanning direction as the rotation axis direction It is possible to adjust the tilt in the direction all at once.
- the main scanning direction of the plurality of inkjet heads can be It is impossible to adjust the tilt in the rotation direction with the scanning direction as the rotation axis direction for each inkjet head.
- the inclination of the plurality of inkjet heads mounted on the carriage in the rotation direction with the sub-scanning direction as the rotation axis direction varies from one inkjet head to another. If the inclination of the multiple inkjet heads in the rotation direction with the main scanning direction as the rotation axis varies for each inkjet head, the ink ejected from the inkjet heads and landing on the print medium (ink droplets) ) may vary greatly depending on the inkjet head. In addition, if the landing position of the ink that lands on the print medium varies greatly depending on the inkjet head, the print quality of the print medium will be degraded.
- an object of the present invention is to provide an inkjet printer capable of suppressing variations in the landing positions of ink ejected from a plurality of inkjet heads mounted on a carriage for each inkjet head.
- the inkjet printer of the present invention includes a plurality of inkjet heads that eject ink, a carriage on which the plurality of inkjet heads are mounted, and a carriage drive mechanism that moves the carriage in the main scanning direction.
- a first inclination adjusting mechanism for adjusting individual inclinations of the inkjet heads with respect to the carriage in the rotational direction with the sub-scanning direction orthogonal to the vertical direction and the main scanning direction being the rotational axis direction; It is characterized by comprising at least one of a second inclination adjustment mechanism for adjusting the individual inclination of the inkjet head with respect to the carriage in the rotation direction with the direction as the axis direction of rotation.
- the inkjet printer of the present invention includes a first inclination adjusting mechanism for adjusting the individual inclination of the inkjet head with respect to the carriage in the rotation direction with the sub-scanning direction as the rotation axis direction, and a first inclination adjustment mechanism for adjusting the inclination of each inkjet head relative to the carriage, At least one of the second tilt adjustment mechanisms is provided for adjusting the tilt of each of the inkjet heads with respect to the carriage in the rotational direction that is the axial direction.
- the inclination of each of the plurality of inkjet heads mounted on the carriage in the rotation direction with the sub-scanning direction as the rotation axis direction varies among the inkjet heads, and the plurality of inkjet heads mounted on the carriage. It is possible to suppress at least one of variations in inclination of the head in the rotation direction with the main scanning direction as the rotation axis direction for each inkjet head. Therefore, in the present invention, it is possible to suppress variations in the landing positions of the ink ejected from the plurality of inkjet heads mounted on the carriage for each inkjet head.
- the inclination of the plurality of inkjet heads mounted on the carriage in the rotation direction with the sub-scanning direction as the rotation axis direction varies from one inkjet head to another, and the inclination of the plurality of inkjet heads mounted on the carriage in the main scanning direction Even if the inclination in the rotation direction with the direction as the axis direction of rotation varies from one inkjet head to another, by adjusting the ink ejection timing for each inkjet head, the ink can be ejected from multiple inkjet heads mounted on the carriage. It is also possible to suppress variations in the landing position of the ink applied to each inkjet head.
- the present invention does not require readjustment when the thickness of the print medium on which printing is performed changes.
- the present invention does not require readjustment when the thickness of the print medium on which printing is performed changes.
- the surface of the print medium has unevenness, even if the ink ejection timing is adjusted for each inkjet head, variations in the landing positions of the ink ejected from multiple inkjet heads for each inkjet head can be minimized.
- it is difficult to suppress with the present invention, it is possible to suppress variations in the landing positions of ink ejected from multiple inkjet heads for each inkjet head, even if the surface of the print medium has unevenness. Become.
- the inkjet printer preferably has a first tilt adjustment mechanism and a second tilt adjustment mechanism.
- the inclination of the plurality of inkjet heads mounted on the carriage in the rotation direction with the sub-scanning direction as the rotation axis direction varies for each inkjet head, and the plurality of inkjet heads mounted on the carriage. It is possible to suppress both variations in inclination of the head in the rotation direction with the main scanning direction as the rotation axis direction for each inkjet head. Therefore, it is possible to effectively suppress variations in the landing positions of the ink ejected from the plurality of inkjet heads mounted on the carriage for each inkjet head.
- the first tilt adjustment mechanism includes a head fixing member to which the inkjet head is fixed
- the second tilt adjustment mechanism includes a holding member that holds the head fixing member
- the holding member is attached to the carriage.
- the head fixing member can rotate with respect to the holding member with the sub-scanning direction as the rotation axis direction. .
- the first tilt adjustment mechanism includes a first lever member rotatably held by the holding member and a second lever member that biases the first lever member toward one side in the rotation direction of the first lever member.
- the second tilt adjustment mechanism comprising: a second lever member rotatably held by the carriage; a second spring member biasing the second lever member toward one side in the rotation direction of the second lever member;
- a second micrometer head or a second adjustment screw is provided on the other side for rotating the second lever member, the first lever member engaging the head fixing member, the first lever member
- the inkjet printer includes a position adjusting mechanism for adjusting the position of each inkjet head relative to the carriage in the sub-scanning direction, and an individual inkjet head relative to the carriage in the rotation direction with the vertical direction as the rotation axis direction.
- the holding member constitutes a part of the position adjusting mechanism and is movable with respect to the carriage in the sub-scanning direction. It is preferable that the member configures a part of the third tilt adjusting mechanism and is rotatable with respect to the holding member with the vertical direction being the axial direction of rotation.
- the inkjet printer of the present invention it is possible to suppress variations in the landing positions of the ink ejected from the plurality of inkjet heads mounted on the carriage for each inkjet head.
- 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 perspective view of an inkjet head and an adjustment mechanism shown in FIG. 2
- FIG. FIG. 4 is a plan view of the adjusting mechanism shown in FIG. 3
- FIG. 4 is a perspective view of the adjustment mechanism shown in FIG. 3
- 6 is a perspective view showing the adjusting mechanism shown in FIG. 3 from a direction different from that in FIG. 5
- FIG. FIG. 7 is a perspective view showing the adjusting mechanism shown in FIG. 3 from a different direction from FIGS. 5 and 6
- 4 is a front view of the inkjet head and adjustment mechanism shown in FIG. 3
- FIG. FIG. 6 is an enlarged view of part E in FIG. 5
- FIG. 7 is an enlarged view of the F portion of FIG. 6
- 6 is an enlarged side view showing the adjustment mechanism from the direction GG of FIG
- 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.
- the printing medium 2 is, for example, printing paper or fabric.
- the printer 1 includes a plurality of inkjet heads 3 (hereinafter referred to as "heads 3") that eject ink toward a print medium 2, and a carriage 4 on which the plurality of heads 3 are mounted.
- the printer 1 of this embodiment has, for example, two heads 3 mounted on a carriage 4 .
- the printer 1 also includes a carriage driving mechanism 5 for moving the carriage 4 in the main scanning direction (the Y direction in FIG. 1, etc.), guide rails 6 for guiding the carriage 4 in the main scanning direction, and a print medium at the time of printing. 2, and a medium feed mechanism 8 that feeds the print medium 2 in the vertical direction (Z direction in FIG. 1 etc.) and the sub-scanning direction (X direction in FIG. 1 etc.) perpendicular to the main scanning direction. , and a plurality of ink tanks 9 in which ink to be supplied to the head 3 is stored.
- the platen 7 is arranged below the head 3 .
- the head 3 ejects ink downward.
- Nozzle rows are formed on the lower surface of the head 3 .
- a nozzle row is composed of a plurality of nozzles arranged in the sub-scanning direction.
- the carriage drive mechanism 5 includes, for example, two pulleys, a belt that is stretched over the two pulleys and partially fixed to the carriage 4, and a motor that rotates the pulleys.
- the medium feeding mechanism 8 includes, for example, a transport roller that contacts the print medium 2 to transport the print medium 2 and a motor that rotates the transport roller.
- the printer 1 also includes an adjustment mechanism 10 for adjusting the individual inclination and position of the head 3 with respect to the carriage 4.
- the printer 1 of this embodiment includes an adjustment mechanism 10 for adjusting the inclination and position of one of the two heads 3 mounted on the carriage 4, and an adjustment mechanism 10 for adjusting the inclination and position of the other of the two heads 3
- Two adjustment mechanisms 10 are mounted on the carriage 4 . The configuration of the adjusting mechanism 10 will be described below.
- FIG. 3 is a perspective view of the head 3 and the adjustment mechanism 10 shown in FIG. 2.
- FIG. 4 is a plan view of the adjusting mechanism 10 shown in FIG. 3.
- FIG. 5 is a perspective view of the adjusting mechanism 10 shown in FIG. 3.
- FIG. 6 is a perspective view showing the adjusting mechanism 10 shown in FIG. 3 from a direction different from that in FIG. 7 is a perspective view showing the adjusting mechanism 10 shown in FIG. 3 from a different direction from FIGS. 5 and 6.
- FIG. 8 is a front view of the head 3 and the adjustment mechanism 10 shown in FIG. 3.
- FIG. 9 is an enlarged view of the E section of FIG. 5.
- FIG. 10 is an enlarged view of the F portion of FIG. 6.
- FIG. 11 is an enlarged side view showing the adjusting mechanism 10 from the direction GG of FIG. 5.
- FIG. 10 is an enlarged view of the F portion of FIG. 6.
- FIG. 11 is an enlarged side view showing the adjusting mechanism 10 from the direction GG of FIG. 5.
- the main scanning direction (Y direction) will be referred to as the "left-right direction” and the sub-scanning direction (X direction) will be referred to as the "front-back direction.”
- the Y1 direction side in FIG. 3 etc. which is one side in the left-right direction, is the “right” side
- the Y2 direction side in FIG. 3 etc. which is the opposite side, is the “left” side.
- the X1 direction side of 3 and the like is defined as the "front” side
- the opposite X2 direction side of FIG. 3 etc. is defined as the "rear" side.
- the adjusting mechanism 10 includes a first tilt adjusting mechanism 13 for adjusting individual tilts of the head 3 with respect to the carriage 4 in the rotational direction with the front-rear direction (sub-scanning direction) as the rotational axis direction, and a left-right direction (main scanning direction). and a second inclination adjusting mechanism 14 for adjusting the individual inclination of the head 3 with respect to the carriage 4 in the rotation direction with the scanning direction as the rotation axis direction.
- the adjustment mechanism 10 also includes a position adjustment mechanism 15 for adjusting the position of each head 3 in the front-rear direction with respect to the carriage 4, and a position adjustment mechanism 15 for adjusting the position of the head 3 with respect to the carriage 4 in the rotation direction with the vertical direction as the rotation axis direction. and a third tilt adjustment mechanism 16 for adjusting individual tilts. Further, the adjustment mechanism 10 has a base member 17 fixed to the carriage 4 .
- the first tilt adjustment mechanism 13 has a head fixing member 20 to which the head 3 is fixed.
- the second tilt adjustment mechanism 14 has a holding member 21 that holds the head fixing member 20 .
- the holding member 21 is rotatable with respect to the base member 17 with the left-right direction as the axial direction of rotation. In other words, the holding member 21 can rotate with respect to the base member 17 fixed to the carriage 4 with the left-right direction as the rotation axis direction. It is possible to rotate in any direction.
- the head fixing member 20 is rotatable with respect to the holding member 21 with the front-rear direction as the axial direction of rotation.
- the holding member 21 constitutes part of the position adjusting mechanism 15 .
- the holding member 21 can move in the front-rear direction with respect to the base member 17 . That is, the holding member 21 can move in the front-rear direction with respect to the base member 17 fixed to the carriage 4 , and can move in the front-rear direction with respect to the carriage 4 .
- the head fixing member 20 forms part of the third tilt adjustment mechanism 16 .
- the head fixing member 20 is rotatable with respect to the holding member 21 with the vertical direction being the axial direction of rotation.
- the second tilt adjustment mechanism 14 includes, in addition to the holding member 21 , a leaf spring 22 that biases the holding member 21 toward one side in the rotation direction of the holding member 21 with respect to the base member 17 , and and a compression coil spring 24 that biases the fulcrum holding member 23 forward.
- the second tilt adjustment mechanism 14 includes a second lever member 25 rotatably held by the carriage 4 via the base member 17 and a second lever member 25 on one side of the second lever member 25 in the rotation direction. 25, and a second micrometer head 27 for rotating the second lever member 25 in the other side of the rotating direction of the second lever member 25 (hereinafter referred to as "second micro meter head 27").
- the fulcrum holding member 23 and the compression coil spring 24 constitute a part of the position adjusting mechanism 15.
- the position adjusting mechanism 15 includes a leaf spring 28 that biases the holding member 21 leftward, and the position of the holding member 21 in the front-rear direction with respect to the base member 17 . and an eccentric cam 29 for adjustment.
- the base member 17 includes a flat base plate portion 17a fixed to the carriage 4, a holding portion 17b holding the second lever member 25 and the second micrometer head 27, and a spring fixing portion to which the plate spring 26 is fixed. 17c, a spring fixing portion 17d to which the leaf spring 28 is fixed, and two regulating pins 17e for regulating the position of the holding member 21 in the left-right direction.
- the base plate portion 17a is formed in a substantially rectangular flat plate shape.
- the base plate portion 17a is formed in a substantially rectangular shape in a state in which the thickness direction and the vertical direction of the base plate portion 17a are aligned with each other, and the long side direction and the front-rear direction of the base plate portion 17a are formed in a substantially rectangular shape. are fixed to the carriage 4 in a state in which A rectangular opening 17f in which the lower end of the head 3 is arranged is formed in the base plate portion 17a.
- the holding portion 17b, the spring fixing portion 17c, and the spring fixing portion 17d are formed in a block shape rising upward from the upper surface of the base plate portion 17a.
- the holding portion 17 b and the spring fixing portion 17 c are formed at the front end portion of the base member 17 .
- the holding portion 17b is formed substantially at the center position of the base member 17 in the left-right direction, and the spring fixing portion 17c is formed at the left end portion of the base member 17. As shown in FIG.
- the spring fixing portion 17d is formed at the right end of the base member 17. Further, the spring fixing portion 17d is formed substantially at the center position of the base member 17 in the front-rear direction.
- Two regulating pins 17 e are formed at the left end of the base member 17 . Also, the two regulating pins 17e are arranged behind the spring fixing portion 17c. The two regulating pins 17e are arranged at the same position in the left-right direction and spaced apart in the front-rear direction.
- the holding member 21 is formed in a substantially rectangular frame shape as a whole.
- the holding member 21 is mounted on the base plate portion 17a.
- the long side direction of the holding member 21 formed in a substantially rectangular frame shape coincides with the front-rear direction.
- a lower end portion of the head 3 is arranged on the inner peripheral side of the holding member 21 .
- the holding member 21 has a front wall portion 21a forming a front surface of the holding member 21, a rear wall portion 21b forming a rear surface of the holding member 21, and a front wall portion 21a and a rear wall portion 21b on the right side of the holding member 21.
- a side wall portion 21c connecting the holding member 21 and a side wall portion 21d connecting the front wall portion 21a and the rear wall portion 21b on the left side of the holding member 21 are provided.
- the front wall portion 21 a is arranged behind the holding portion 17 b of the base member 17 .
- a protrusion 21e that protrudes rightward is formed on the side wall 21c, and a protrusion 21e that protrudes leftward is formed on the side wall 21d.
- the projecting portion 21e is arranged behind the spring fixing portion 17d.
- a rear end portion of the projecting portion 21e serves as a fulcrum portion 21f formed in a substantially cylindrical shape.
- the fulcrum portion 21f formed in a substantially columnar shape is arranged in a state in which the axial direction of the fulcrum portion 21f is aligned with the left-right direction.
- the fulcrum portion 21f formed on the side wall portion 21c and the fulcrum portion 21f formed on the side wall portion 21d are arranged at the same position in the front-rear direction.
- the two fulcrum portions 21f serve as fulcrums for rotation of the holding member 21 with respect to the carriage 4, and the holding member 21 rotates around an axis L1 passing through the axial centers of the two fulcrum portions 21f. It is rotatable with respect to the carriage 4 .
- the fulcrum holding member 23 is formed in a substantially rectangular parallelepiped block shape.
- the compression coil spring 24 is arranged behind the fulcrum holding member 23 and biases the fulcrum holding member 23 forward as described above.
- the fulcrum holding member 23 is linearly movable in the front-rear direction with respect to the base member 17 .
- the fulcrum portion holding member 23 and the compression coil spring 24 are arranged at two locations, one on the right side of the side wall portion 21c and the other on the left side of the side wall portion 21d.
- An inclined surface 23a with which the fulcrum portion 21f contacts is formed at the lower end portion of the front surface of the fulcrum portion holding member 23 (see FIG. 11).
- the inclined surface 23a is inclined upward toward the front side.
- the fulcrum portion 21f is restricted from moving upward and backward by the inclined surface 23a. That is, the holding member 21 is restricted from moving upward and rearward by the fulcrum holding member 23 .
- the compression coil spring 24 urges the holding member 21 forward through the fulcrum holding member 23 .
- the plate spring 22 is attached to the holding portion 17b of the base member 17. As shown in FIG. 9, the front wall portion 21a of the holding member 21 is formed with a projecting portion 21g projecting forward, and the spring portion 22a of the leaf spring 22 contacts the upper surface of the projecting portion 21g. ing. That is, the leaf spring 22 urges the front end portion of the holding member 21 downward.
- the second lever member 25 is formed in a substantially rectangular parallelepiped shape elongated in the left-right direction.
- a circular insertion hole 25a is formed in the central portion of the second lever member 25 so as to extend therethrough in the front-rear direction (see FIGS. 8 to 10).
- a cylindrical fixed shaft 17g formed in the holding portion 17b is inserted into the insertion hole 25a, and the central portion of the second lever member 25 is rotatably supported by the fixed shaft 17g. Therefore, the second lever member 25 is rotatable with respect to the base member 17 with the front-rear direction as the axial direction of rotation.
- a cylindrical engagement pin 32 projecting rearward is formed or fixed to the right end of the second lever member 25 (see FIG. 9). A rear end portion of the engaging pin 32 is inserted into an engaging hole formed in the projecting portion 21 g of the holding member 21 .
- the plate spring 26 is fixed to the spring fixing portion 17c.
- the leaf spring 26 has a second spring portion 26a that contacts the left end portion of the second lever member 25 from below (see FIGS. 8 and 10).
- the second spring portion 26a biases the left end portion of the second lever member 25 upward.
- the second spring portion 26a of this embodiment is a second spring member that biases the second lever member 25 toward one side in the rotation direction of the second lever member 25 .
- the leaf spring 26 also constitutes a part of the first tilt adjusting mechanism 13 .
- the second micrometer head 27 is attached to the holding portion 17b. Specifically, the second micrometer head 27 is attached to the holding portion 17b so that the spindle 33 of the second micrometer head 27 is arranged on the lower side (see FIG. 8). The lower end of the spindle 33 is in contact with the upper surface of the left end of the second lever member 25 .
- the spindle 33 moves up and down. Further, when the spindle 33 moves up and down, the second lever member 25 rotates around the fixed shaft 17g. When the second lever member 25 rotates, the engaging pin 32 moves up and down together with the right end portion of the second lever member 25, so that the front end portion of the holding member 21 moves up and down. When the front end portion of the holding member 21 moves up and down, the holding member 21 rotates around the axis L1. That is, the second lever member 25 is engaged with the holding member 21 via the engagement pin 32 , and when the second lever member 25 rotates, the holding member 21 rotates in the left-right direction with respect to the carriage 4 . It rotates along the axis of motion.
- the leaf spring 28 is fixed to the spring fixing portion 17d as described above.
- the leaf spring 28 is formed with a spring portion 28 a that contacts the holding member 21 .
- the spring portion 28a contacts the holding member 21 from the right side and biases the holding member 21 leftward.
- the left surface of the side wall portion 21d of the holding member 21 that is biased to the left is in contact with the two regulating pins 17e.
- the eccentric cam 29 is rotatably attached to the right front end of the base plate portion 17a.
- the eccentric cam 29 is rotatable with the vertical direction as the axial direction of rotation.
- the cam surface of the eccentric cam 29 is in contact with the front right end portion of the front wall portion 21 a of the holding member 21 .
- the leaf spring 26 constitutes a part of the first tilt adjustment mechanism 13.
- the first tilt adjustment mechanism 13 includes a first lever member 35 rotatably held by the holding member 21 in addition to the head fixing member 20 and the plate spring 26 .
- a first spring portion 26b which will be described later and constitutes a part of the leaf spring 26, biases the first lever member 35 toward one side in the rotation direction of the first lever member 35.
- the first tilt adjusting mechanism 13 also includes a first micrometer head 37 (hereinafter referred to as "first micrometer head 37”).
- the head fixing member 20 constitutes a part of the third tilt adjusting mechanism 16 .
- the third tilt adjustment mechanism 16 includes, in addition to the head fixing member 20, a leaf spring 38 that biases the head fixing member 20 toward one side in the rotation direction of the head fixing member 20 whose rotation axis direction is the vertical direction. and an eccentric cam 39 for adjusting the inclination of the head fixing member 20 with respect to the holding member 21 in the rotating direction with the vertical direction as the axial direction of rotation.
- the head fixing member 20 is composed of two members, a first fixing member 41 to which the front end of the head 3 is fixed, and a second fixing member 42 to which the rear end of the head 3 is fixed.
- the first fixing member 41 and the second fixing member 42 are integrated through the head 3 .
- a mounting portion on which the first fixing member 41 is mounted is formed behind the front wall portion 21a of the holding member 21, and the first fixing member 41 is mounted on the mounting portion.
- a mounting portion on which the second fixing member 42 is mounted is formed on the front side of the rear wall portion 21b of the holding member 21, and the second fixing member 42 is mounted on this mounting portion. ing.
- the first fixing member 41 is formed with a cylindrical fixed shaft 41a projecting forward.
- An insertion hole 21h into which the fixed shaft 41a is inserted is formed in the front wall portion 21a (see FIG. 9).
- 21 h of insertion holes are formed in the shape of an elongated hole which makes the left-right direction the longitudinal direction.
- the fixed shaft 41a is rotatably held by the front wall portion 21a.
- a plate spring 44 is fixed to the upper end surface of the front wall portion 21a.
- the leaf spring 44 is in contact with the upper end surface of the first fixing member 41 and biases the first fixing member 41 downward.
- a plate spring 45 is fixed to the upper end surface of the rear wall portion 21b.
- the leaf spring 45 is in contact with the upper end surface of the second fixing member 42 and biases the second fixing member 42 downward.
- a supported portion (not shown) projecting rearward is formed on the rear surface of the second fixing member 42 .
- This supported portion is formed, for example, in a hemispherical shape, and is supported by a spherical bearing (spherical sliding bearing) 46 fixed to the rear wall portion 21b.
- the rear end of the hemispherical supported portion and the fixed shaft 41a are arranged at substantially the same position in the left-right direction.
- the fixing shaft 41a and the supported portion serve as fulcrums for rotating the head fixing member 20 with respect to the holding member 21.
- the head fixing member 20 is rotatable with respect to holding member 21 about axis L2 passing through the center of fixed shaft 41a and the rear end of the supported portion. That is, the head fixing member 20 is rotatable with respect to the carriage 4 with the axis L2 as the center of rotation.
- the supported portion of the second fixing member 42 supported by the spherical bearing 46 is configured such that the head fixing member 20 rotates with respect to the holding member 21 in the rotating direction of the head fixing member 20 whose axial direction of rotation is the vertical direction.
- the head fixing member 20 rotates with respect to the holding member 21 with the supported portion of the second fixing member 42 as the center of rotation and with the vertical direction as the axial direction of rotation. It is possible. That is, the head fixing member 20 is rotatable with respect to the carriage 4 with the supported portion of the second fixing member 42 as the center of rotation.
- at least one of the head fixing member 20 and the holding member 21 is provided to prevent interference between the head fixing member 20 and the holding member 21 when the head fixing member 20 rotates with respect to the holding member 21.
- a notch is formed for
- the leaf spring 38 is attached to the front end portion of the side wall portion 21d of the holding member 21 .
- a spring portion 38a of the leaf spring 38 contacts the first fixing member 41 from the left side and biases the first fixing member 41 to the right side.
- the eccentric cam 39 is rotatably attached to the right front end of the holding member 21 .
- the eccentric cam 39 is rotatable with the vertical direction as the axial direction of rotation.
- a cam surface of the eccentric cam 39 is in contact with the left side surface of the first fixed member 41 .
- the first lever member 35 is formed in a substantially rectangular parallelepiped shape elongated in the left-right direction. As shown in FIG. 10, the right end of the first lever member 35 is formed with a circular insertion hole 35a penetrating in the front-rear direction. A fixed shaft 48 formed or fixed to the front wall portion 21a is inserted into the insertion hole 35a, and the right end portion of the first lever member 35 is rotatably supported by the fixed shaft 48. As shown in FIG. Therefore, the first lever member 35 is rotatable with respect to the holding member 21 with the front-rear direction as the axial direction of rotation.
- a cylindrical engagement pin 51 is formed or fixed to the left end of the first lever member 35 so as to protrude rearward.
- a rear end portion of the engaging pin 51 is inserted into an engaging hole 41 b formed in the left end portion of the first fixing member 41 .
- the engagement hole 41b penetrates the first fixing member 41 in the front-rear direction.
- the engaging hole 41b is formed in an elongated hole shape with the left-right direction as the longitudinal direction.
- the leaf spring 26 has a first spring portion 26b that contacts the left end portion of the first lever member 35 from below.
- the first spring portion 26b biases the left end portion of the first lever member 35 upward.
- the first spring portion 26b of this embodiment is a first spring member that biases the first lever member 35 toward one side in the rotation direction of the first lever member 35 .
- the first micrometer head 37 is attached to the left end of the front wall portion 21a. Specifically, the first micrometer head 37 is attached to the left end portion of the front wall portion 21a so that the spindle 53 of the first micrometer head 37 is arranged on the lower side (see FIG. 8). The lower end of the spindle 53 is in contact with the upper surface of the left end of the first lever member 35 .
- the spindle 53 moves up and down. Further, when the spindle 53 moves up and down, the first lever member 35 rotates around the fixed shaft 48 .
- the engaging pin 51 moves up and down together with the left end portion of the first lever member 35 , so that the left end portion of the first lever member 35 moves up and down, and the first fixing member 41 moves upward and downward. rotates. That is, when the first lever member 35 rotates, the head fixing member 20 rotates around the axis L2.
- the first lever member 35 is engaged with the head fixing member 20 via the engagement pin 51 , and when the first lever member 35 rotates, the head fixing member 20 moves toward the carriage 4 . It rotates with the front-rear direction as the axial direction of rotation.
- the holding member 21 rotates with respect to the carriage 4 with the horizontal direction as the rotation axis direction. Therefore, in this embodiment, by rotating the thimble 34, it is possible to adjust the inclination of each of the heads 3 with respect to the carriage 4 in the rotating direction with the left-right direction as the axial direction of rotation. Therefore, in this embodiment, it is possible to suppress variations in the inclination of the two heads 3 mounted on the carriage 4 in the rotation direction with the left-right direction as the rotation axis direction.
- the two heads 3 mounted on the carriage 4 have variations in tilt in the rotational direction with the front-rear direction as the axial direction of rotation, and the inclination of each head 3 mounted on the carriage 4 It is possible to suppress variations in the inclination of the two heads 3 in the rotation direction with the left-right direction as the rotation axis direction. Therefore, in the present embodiment, it is possible to suppress variations in the landing positions of the ink ejected from the two heads 3 mounted on the carriage 4 onto the printing medium 2 for each head 3 .
- the inclination of the two heads 3 mounted on the carriage 4 in the rotational direction with the front-rear direction as the axial direction of rotation varies between the heads 3, and the two heads 3 mounted on the carriage 4 Since it is possible to suppress the variation in the inclination of each head 3 in the rotation direction with the left-right direction as the rotation axis direction, even if the thickness of the print medium 2 changes, Even if the surface of the print medium 2 has unevenness, it is possible to suppress variations in the landing positions of the ink ejected from the two heads 3 mounted on the carriage 4 on the print medium 2 for each head 3. Become.
- the holding member 21 that forms part of the second tilt adjustment mechanism 14 forms part of the position adjustment mechanism 15 , and the holding member 21 is movable in the front-rear direction with respect to the carriage 4 .
- the head fixing member 20 that constitutes a part of the first tilt adjustment mechanism 13 constitutes a part of the third tilt adjustment mechanism 16 , and the head fixing member 20 is attached to the holding member 21 . Rotation with the vertical direction as the axial direction of rotation is possible. Therefore, in this embodiment, even if the adjustment mechanism 10 includes the position adjustment mechanism 15 and the third inclination adjustment mechanism 16 in addition to the first inclination adjustment mechanism 13 and the second inclination adjustment mechanism 14, the configuration of the printer 1 is can be simplified.
- the first tilt adjusting mechanism 13 includes, instead of the first micrometer head 37, a first micrometer for rotating the first lever member 35 in the other side of the rotating direction of the first lever member 35.
- An adjustment screw may be provided.
- the first adjusting screw is attached to the left end of the front wall portion 21 a , and the lower end of the first adjusting screw contacts the upper surface of the left end of the first lever member 35 .
- the front wall portion 21a is formed with a screw hole into which a first adjustment screw is screwed.
- the second tilt adjustment mechanism 14 includes a second micrometer head 27 for rotating the second lever member 25 in the other side of the rotation direction of the second lever member 25 instead of the second micrometer head 27 .
- 2 adjustment screws may be provided.
- the second adjusting screw is attached to the holding portion 17b, and the lower end of the second adjusting screw is in contact with the upper surface of the left end portion of the second lever member 25.
- the holding portion 17b is formed with a screw hole into which a second adjustment screw is screwed.
- the adjustment mechanism 10 does not have to include the second tilt adjustment mechanism 14 .
- the first tilt adjustment mechanism 13 adjusts the tilt of the two heads 3 mounted on the carriage 4 in the rotational direction with the front-rear direction as the rotational axis direction. Since this can be suppressed, it is possible to suppress variations in the landing positions of the ink ejected from the two heads 3 mounted on the carriage 4 on the print medium 2 for each head 3 .
- the adjustment mechanism 10 does not have to include the first tilt adjustment mechanism 13 .
- the second tilt adjustment mechanism 14 adjusts the tilt of the two heads 3 mounted on the carriage 4 in the rotational direction with the horizontal direction as the rotational axis direction. Since this can be suppressed, it is possible to suppress variations in the landing positions of the ink ejected from the two heads 3 mounted on the carriage 4 on the print medium 2 for each head 3 .
- the adjustment mechanism 10 preferably includes a first tilt adjustment mechanism 13 because it is possible to suppress variations in the landing positions of the ink ejected from the heads 3 onto the print medium 2 for each head 3 .
- the holding member 21 can rotate with respect to the carriage 4 in the front-rear direction, and the head fixing member 20 can rotate with respect to the holding member 21 in the left-right direction. Rotation in the axial direction of rotation may be possible.
- the holding member 21 does not need to constitute a part of the position adjusting mechanism 15 .
- the head fixing member 20 does not have to constitute a part of the third tilt adjusting mechanism 16 .
- the adjustment mechanism 10 may not include the position adjustment mechanism 15 and may not include the third tilt adjustment mechanism 16 .
- the printer 1 has the number of adjustment mechanisms 10 corresponding to the number of heads 3 mounted on the carriage 4 .
- the printer 1 instead of the platen 7 and the medium feeding mechanism 8, the printer 1 includes a table on which the printing medium 2 is placed and a table feeding mechanism that feeds the table in the sub-scanning direction (back and forth).
- a table on which the print medium 2 is placed and a Y bar feeding mechanism for feeding the Y bar to which the guide rail 6 is fixed in the sub-scanning direction (forward and backward direction) may be provided.
- the printer 1 may be a 3D printer.
Landscapes
- Ink Jet (AREA)
- Common Mechanisms (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は、図2に示すヘッド3および調整機構10の斜視図である。図4は、図3に示す調整機構10の平面図である。図5は、図3に示す調整機構10の斜視図である。図6は、図3に示す調整機構10を図5と異なる方向から示す斜視図である。図7は、図3に示す調整機構10を図5、図6と異なる方向から示す斜視図である。図8は、図3に示すヘッド3および調整機構10の正面図である。図9は、図5のE部の拡大図である。図10は、図6のF部の拡大図である。図11は、図5のG-G方向から調整機構10を示す拡大側面図である。
以上説明したように、本形態では、第1マイクロメータヘッド37のシンブル54を回動させると、ヘッド固定部材20がキャリッジ4に対して前後方向を回動の軸方向として回動する。そのため、本形態では、シンブル54を回動させることで、前後方向を回動の軸方向とする回動方向においてキャリッジ4に対するヘッド3の個々の傾きを調整することが可能になる。したがって、本形態では、キャリッジ4に搭載される2個のヘッド3の、前後方向を回動の軸方向とする回動方向における傾きのヘッド3ごとのばらつきを抑制す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)
4 キャリッジ
5 キャリッジ駆動機構
13 第1傾き調整機構
14 第2傾き調整機構
15 位置調整機構
16 第3傾き調整機構
20 ヘッド固定部材
21 保持部材
25 第2レバー部材
26a 第2バネ部(第2バネ部材)
26b 第1バネ部(第1バネ部材)
27 第2マイクロメータヘッド(第2のマイクロメータヘッド)
35 第1レバー部材
37 第1マイクロメータヘッド(第1のマイクロメータヘッド)
X 副走査方向
Y 主走査方向
Z 上下方向
Claims (5)
- インクを吐出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とともに、
上下方向と主走査方向とに直交する副走査方向を回動の軸方向とする回動方向において前記キャリッジに対する前記インクジェットヘッドの個々の傾きを調整するための第1傾き調整機構、および、主走査方向を回動の軸方向とする回動方向において前記キャリッジに対する前記インクジェットヘッドの個々の傾きを調整するための第2傾き調整機構の少なくともいずれか一方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傾き調整機構と前記第2傾き調整機構とを備えることを特徴とする請求項1記載のインクジェットプリンタ。
- 前記第1傾き調整機構は、前記インクジェットヘッドが固定されるヘッド固定部材を備え、
前記第2傾き調整機構は、前記ヘッド固定部材を保持する保持部材を備え、
前記保持部材は、前記キャリッジに対して主走査方向を回動の軸方向とする回動が可能になっており、
前記ヘッド固定部材は、前記保持部材に対して副走査方向を回動の軸方向とする回動が可能になっていることを特徴とする請求項2記載のインクジェットプリンタ。 - 前記第1傾き調整機構は、前記保持部材に回動可能に保持される第1レバー部材と、前記第1レバー部材の回動方向の一方側に前記第1レバー部材を付勢する第1バネ部材と、前記第1レバー部材の回動方向の他方側に前記第1レバー部材を回動させるための第1のマイクロメータヘッドまたは第1の調整ネジとを備え、
前記第2傾き調整機構は、前記キャリッジに回動可能に保持される第2レバー部材と、前記第2レバー部材の回動方向の一方側に前記第2レバー部材を付勢する第2バネ部材と、前記第2レバー部材の回動方向の他方側に前記第2レバー部材を回動させるための第2のマイクロメータヘッドまたは第2の調整ネジとを備え、
前記第1レバー部材は、前記ヘッド固定部材に係合しており、前記第1レバー部材が回動すると、前記ヘッド固定部材は、前記保持部材に対して副走査方向を回動の軸方向として回動し、
前記第2レバー部材は、前記保持部材に係合しており、前記第2レバー部材が回動すると、前記保持部材は、前記キャリッジに対して主走査方向を回動の軸方向として回動することを特徴とする請求項3記載のインクジェットプリンタ。 - 前記キャリッジに対する前記インクジェットヘッドの個々の副走査方向における位置を調整するための位置調整機構と、上下方向を回動の軸方向とする回動方向において前記キャリッジに対する前記インクジェットヘッドの個々の傾きを調整するための第3傾き調整機構とを備え、
前記保持部材は、前記位置調整機構の一部を構成するとともに、前記キャリッジに対して副走査方向への移動が可能になっており、
前記ヘッド固定部材は、前記第3傾き調整機構の一部を構成するとともに、前記保持部材に対して上下方向を回動の軸方向とする回動が可能になっていることを特徴とする請求項3または4記載のインクジェットプリンタ。
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US18/273,028 US20240059061A1 (en) | 2021-01-20 | 2022-01-07 | Inkjet printer |
CN202280010542.XA CN116802057A (zh) | 2021-01-20 | 2022-01-07 | 喷墨打印机 |
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CN116552142A (zh) * | 2023-06-26 | 2023-08-08 | 武汉国创科光电装备有限公司 | 一种拼接式喷头模组及显示面板喷印设备 |
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JP2024010373A (ja) | 2022-07-12 | 2024-01-24 | 株式会社シマノ | 人力駆動車用の制御装置、人力駆動車用のアシスト装置、人力駆動車用の電動装置、および、人力駆動車用の制御システム |
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