CN113199868A - Wiper mechanism - Google Patents
Wiper mechanism Download PDFInfo
- Publication number
- CN113199868A CN113199868A CN202011510774.0A CN202011510774A CN113199868A CN 113199868 A CN113199868 A CN 113199868A CN 202011510774 A CN202011510774 A CN 202011510774A CN 113199868 A CN113199868 A CN 113199868A
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- Prior art keywords
- wiper
- ink
- wiping
- unit
- traveling direction
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- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 238000004140 cleaning Methods 0.000 description 20
- 238000007639 printing Methods 0.000 description 17
- 238000007641 inkjet printing Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007790 scraping Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
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
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/16535—Cleaning of print head nozzles using wiping constructions
Landscapes
- Ink Jet (AREA)
Abstract
The invention provides a wiper mechanism which improves the wiping performance of ink. A wiper mechanism (1) is provided with: a first wiper (11) that wipes the nozzle surfaces (112a-1) of the inkjet heads (111, 112) (head modules (111a, 112 a)); and a second wiper (12) which is arranged on the front side of the first wiper (11) in the traveling direction (D1), is offset from the first wiper (11) in the width direction (D3) orthogonal to the traveling direction (D1), and moves parallel to the first wiper (11). The first wiper (11) and the second wiper (12) are arranged so as to overlap only partially in the direction of travel (D1).
Description
Technical Field
The present invention relates to a wiper mechanism including a wiper for wiping a nozzle surface of an inkjet head.
Background
Conventionally, a wiper (wiper blade) is sometimes used to clean the nozzle surface of an inkjet head. Among such wipers, a wiper formed of a plurality of flexible blades arranged in the traveling direction of the wiper at intervals at which ink can be absorbed by capillary action has been proposed (for example, see patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2001 and 199076
Disclosure of Invention
Problems to be solved by the invention
However, the wiper may be made of a rubber material that does not absorb ink but scrapes ink, or a porous material such as sponge that absorbs and wipes ink.
A wiper made of a porous material is easy to clean the nozzle surface without wiping residue by absorbing ink, but has disadvantages such as being used as a consumable by absorbing ink, and requiring a mechanism for squeezing out the absorbed ink.
Wipers made of rubber material are suitable for repeated wiping (wipe, wiping). However, the rubber material hardly absorbs the ink. Since the vicinity of the tip of the wiper that contacts the nozzle surface of the head of the inkjet head is elastically deformed into an R shape, the wiped ink accumulates in the bent region. In this way, the accumulated ink adheres to the side surface of the inkjet head and remains on the side surface, or is not completely wiped off, and a wiping failure such as wiping residue occurs on the nozzle surface, and further, there is a concern that an ejection failure of the inkjet head, image contamination due to contact between paper and the remaining ink, and the like occur.
In the wiper including the plurality of blades, a wiping failure such as ink deposited on the blade in front of the wiper in the traveling direction adhering to the side surface of the inkjet head remains. Therefore, there is a concern that ejection failure of the inkjet head, image contamination due to contact of the paper with the remaining ink, and the like may occur.
The invention aims to provide a wiper mechanism capable of improving wiping performance of ink.
Means for solving the problems
In one aspect, a wiper mechanism includes: a first wiper that wipes a nozzle surface of the inkjet head; and a second wiper that is disposed on a front side in a traveling direction of the first wiper, is shifted from the first wiper in a width direction orthogonal to the traveling direction, and moves in parallel with the first wiper, wherein the first wiper and the second wiper are disposed so as to overlap only partially in the traveling direction.
Effects of the invention
According to this aspect, the wiping performance of the ink can be improved.
Drawings
Fig. 1 is a block diagram showing an ink jet printing apparatus according to an embodiment.
Fig. 2 is a control configuration diagram showing an ink jet printing apparatus according to an embodiment.
Fig. 3 is a plan view showing a wiper mechanism according to an embodiment.
Fig. 4 is a perspective view showing the IV-IV section of fig. 3 with the head module omitted.
Fig. 5 is a V-V sectional view of fig. 3.
Fig. 6 is a front view showing a wiper mechanism in a wiping position according to an embodiment.
Fig. 7 is a perspective view showing the first wiper and the second wiper at the time of wiping in one embodiment.
Fig. 8 is a front view showing the first wiper and the second wiper at the time of wiping in one embodiment.
Fig. 9 is a left side view showing the first wiper and the second wiper at the time of wiping in one embodiment.
Fig. 10 is an enlarged perspective view (one of) for explaining the flow of the cleaning ink at the time of wiping in one embodiment.
Fig. 11 is an enlarged perspective view (two) for explaining the flow of the cleaning ink at the time of wiping in one embodiment.
Fig. 12 is an enlarged front view for explaining the flow of the cleaning ink at the time of wiping in one embodiment.
Fig. 13 is an enlarged front view for explaining the cleansing ink attached to the bottom surface of the cover plate in one embodiment.
Fig. 14 is (one of) a left side view for explaining a gap between the first wiper and the second wiper in one embodiment.
Fig. 15 is a left side view (two) for explaining a gap between the first wiper and the second wiper in one embodiment.
Description of the reference numerals
1: a wiper mechanism; 10: a wiper unit; 11: a first wiper; 11 a: wiping the surface; 12: a second wiper; 12 a: wiping the surface; 12 b: a side surface; 12 c: a fixed part; 13: a wiper support member; 13 a: a threaded hole; 20: a guide section; 30: an ink receiving portion; 30 a: an ink receiving surface; 30 b: a discharge unit; 40: a wiper drive section; 41: a motor; 100: an inkjet printing device; 110: a printing section; 111. 112, 112: an ink jet head; 111a, 112 a: a head module; 112 a-1: a nozzle face; 112a-1 a: a nozzle; 112 a-2: a cover plate; 120: an adsorption conveying part; 130: an external paper supply unit; 131: a paper supply tray; 132: a paper scraping roller; 133: a paper rubbing roller; 141. 142, 143: an internal paper feeding section; 141a, 142a, 143 a: a paper supply tray; 141b, 142b, 143 b: a paper scraping roller; 141c, 142c, 143 c: a paper rubbing roller; 151-155: a pair of conveying rollers; 156: a pair of positioning rollers; 161: a control unit; 162: a storage unit; 163: an operation panel section; 164: a scanner; 165: a paper discharge section; d1: a direction of travel; d2: a direction of extension; d3: a width direction; g1, G2: a gap; l: an overlap length; p: paper; PI: the ink is purged.
Detailed Description
Hereinafter, a wiper mechanism and a wiper according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a block diagram showing a configuration of an inkjet printing apparatus 100 according to an embodiment.
Fig. 2 is a control configuration diagram of the inkjet printing apparatus 100.
Note that the respective directions of the front-back direction, the up-down direction, and the left-right direction shown in fig. 1 and fig. 3 to 15 described later are merely an example of a case where the transport direction of the sheet P as an example of the print medium is the right direction, and for example, the front-back direction and the left-right direction are horizontal directions, and the up-down direction is a vertical direction.
As shown in fig. 1, the inkjet printing apparatus 100 includes a wiper mechanism 1, a printing unit 110, an adsorption conveying unit 120, an external paper feed unit 130, internal paper feed units 141 to 143, conveying roller pairs 151 to 155, and a registration roller pair 156. As shown in fig. 2, the inkjet printing apparatus 100 includes a control unit 161, a storage unit 162, an operation panel unit 163, a scanner 164, and a paper discharge unit 165. In fig. 1, the conveyance path continuing from the external paper feed unit 130 and the internal paper feed units 141 to 143 to the printing unit 110 is shown by a thick solid line.
The printing unit 110 includes, for example, two inkjet heads 111 and 112. As shown in fig. 3, the inkjet heads 111 and 112 respectively include six (a plurality of) head modules 111a and 112a arranged in a staggered manner along a main scanning direction (front-rear direction) orthogonal to a conveying direction (right direction) of the sheet P. That is, in the ink jet heads 111 and 112, the six head modules 111a and 112a arranged along the front-rear direction are arranged so that the positions in the left-right direction are alternately shifted. In one example, the six head modules 111a of one inkjet head 111 discharge two colors of ink (e.g., black (K) and cyan (C)), and the six head modules 112a of the other inkjet head 112 discharge two colors of ink (e.g., magenta (M) and yellow (Y)) different from the inkjet head 111.
The suction conveyance unit 120 is disposed to face the printing unit 110. The conveying unit 120 conveys the paper P by a conveyor belt while attracting the paper P, for example. The suction transport unit 120 may be movable to a printing position shown in fig. 1, a wiping position shown in fig. 6 below the printing position, and a standby position, not shown, below the wiping position. The wiper mechanism 1 shown in fig. 1 is located at a position retracted from below the printing unit 110 during printing.
The external sheet feeding unit 130 and the internal sheet feeding units 141 to 143 include sheet feeding trays 131, 141a, 142a, and 143a, squeegee rollers 132, 141b, 142b, and 143b, and Pickup rollers (Pickup rollers) 133, 141c, 142c, and 143 c.
A plurality of sheets P are loaded on the sheet feed trays 131, 141a, 142a, and 143 a.
The scraping rollers 132, 141b, 142b, and 143b are delivery rollers that deliver and convey the uppermost paper P of the plurality of paper P loaded on the paper feed trays 131, 141a, 142a, and 143 a.
The pickup rollers 133, 141c, 142c, and 143c convey the sheet P drawn by the blade rollers 132, 141b, 142b, and 143 b.
The conveying roller pairs 151 to 155 are disposed on a conveying path from the internal paper feeding portions 141 to 143 to the registration roller pair 156.
The sheets P fed from the external sheet feeding unit 130 and the internal sheet feeding units 141 to 143 are in contact with the registration roller pairs 156. Thereby, skew of the sheet P is corrected.
The control Unit 161 shown in fig. 2 includes a processor (e.g., a Central Processing Unit (CPU)) functioning as an arithmetic Processing Unit that controls the operation of the entire inkjet printing apparatus 100, and controls the operation of each Unit of the inkjet printing apparatus 100, such as the wiper driving Unit 40, the printing Unit 110, and the suction/transport Unit 120.
The storage unit 162 is, for example, a ROM (Read Only Memory) which is a Read-Only semiconductor Memory in which a predetermined control program is recorded in advance, a RAM (Random Access Memory) which is a semiconductor Memory that can be Read and written as needed and is used as a work Memory area by a processor when executing various control programs, a hard disk device, or the like.
The operation panel section 163 includes operation keys for performing various operations, a touch panel, a display for displaying various information, and the like, and functions as an example of an input section and a display section of the inkjet printing apparatus 100.
The scanner 164 reads image data from an original.
The paper discharge section 165 includes a paper discharge tray on which the paper P printed by the printing section 110 is loaded, and discharge rollers that discharge the paper P to the paper discharge tray.
Fig. 3 is a plan view showing the wiper mechanism 1.
Fig. 4 is a perspective view showing the IV-IV section of fig. 3 with the head modules 111a, 112a omitted.
Fig. 5 is a V-V sectional view of fig. 3.
Fig. 6 is a front view showing the wiper mechanism 1 in the wiping position.
Fig. 7 to 9 are perspective, front, and left views showing the first wiper 11 and the second wiper 12 during wiping.
The respective directions of the front-back, the up-down, and the left-right shown in fig. 3 to 9 and fig. 10 to 15 described later are directions in which the wiper mechanism 1 is located at a wiping position between the printing portion 110 and the suction conveying portion 120 as shown in fig. 6.
The wiper mechanism 1 shown in fig. 3 includes a wiper unit 10, two guide portions 20, an ink receiving portion 30, and a wiper driving portion 40.
The wiper unit 10 includes, for example, four first wipers 11 and four second wipers 12, and a wiper support member 13 that supports the first wipers 11 and the second wipers 12.
As described above, the head modules 111a and 112a of the two ink jet heads 111 and 112 are arranged in a staggered manner and arranged in four rows in the left-right direction. Therefore, in order to cause one set of the first wiper 11 and the second wiper 12 to wipe one row (three) of the head modules 111a and 112a, four sets of the first wiper 11 and the second wiper 12 are arranged in total.
As shown in fig. 5, the first wiper 11 and the second wiper 12 extend in an upward extending direction D2. The first wiper 11 and the second wiper 12 are, for example, wiper blades. As shown in fig. 7 and 9, the first wiper 11 and the second wiper 12 are elastic bodies that elastically deform by coming into contact with the head modules 111a and 112a (the nozzle surface 112a-1 or the cover plate 112 a-2). The first wiper 11 and the second wiper 12 may be made of a material such as rubber.
As shown in fig. 4, the second wiper 12 is disposed on the front side in the traveling direction D1 with respect to the first wiper 11, and is shifted from the first wiper 11 to the right side in the width direction D3 orthogonal to the traveling direction D1 of the first wiper 11 and the extending direction D2 of the first wiper 11. The first wiper 11 and the second wiper 12 are arranged so that only a part (the overlapping length L in the width direction D3 shown in fig. 8) overlaps in the traveling direction D1. The region thus arranged to overlap does not overlap the nozzles 112a-1a (nozzle rows) on the nozzle surface 112a-1 in the traveling direction D1.
The second wiper 12 moves in parallel with the first wiper 11 on the front side in the traveling direction D1 of the first wiper 11, and transfers the cleaning ink PI (an example of ink) wiped by the first wiper 11 as shown in fig. 10 to 12, which will be described later in detail.
As shown in fig. 7, the second wiper 12 wipes the bottom surface of the cover plate 112a-2, which is an example of a surface of the head module 112a (inkjet heads 111 and 112) located below the nozzle surface 112 a-1. In addition, the second wiper 12 may wipe the nozzle surface 112a-1 in a mode in which the cover plate 112a-2 is omitted. Further, there may be no step on the nozzle face 112a-1 wiped by the first wiper 11 and the face wiped by the second wiper 12 (for example, the bottom face of the cover plate 112 a-2). The second wiper 12 is disposed on the right side in the width direction D3 of the first wiper 11, but may be disposed on both the left and right sides in the width direction D3. The nozzle row may be disposed on the nozzle surface 112a-1 wiped by the second wiper 12.
The first wiper 11 wipes the nozzle surface 112a-1 (only the nozzle surface 112a-1 of the head module 112a is shown in fig. 7 to 9). The second wiper 12 wipes the bottom surface of a cover plate 112a-2 (only the cover plate 112a-2 of the head module 112a is illustrated in fig. 7 to 9) for preventing the sheet P from contacting the nozzle surface 112a-1, for example. The cover plate 112a-2 is a metal plate that is perpendicular to a portion of the nozzle surface 112a-1 (e.g., a portion covered with a Micro Electro Mechanical System (MEMS) that controls the ejection of the nozzle 112a-1 a) and a portion covered with a side surface of the head module 112a, and has an L shape, for example, when viewed from the rear. Further, the nozzle surface 112a-1 is coated with, for example, an ink repellent film. In addition, the wetting property of the cover plate 112a-2 is higher than that of the nozzle face 112 a-1.
As shown in fig. 7 and 9, the first wiper 11 wipes the nozzle surface 112a-1 in a state where a part of the front end side (upper end side) is bent at the time of wiping, and the second wiper 12 wipes the bottom surface of the cover plate 112a-2 in a state where a part of the front end side (upper end side) is bent at the time of wiping. The wiping surfaces 11a and 12a, which are the surfaces of the first wiper 11 and the second wiper 12 on the downstream side in the traveling direction D1, have a rectangular shape, for example, as shown in fig. 8.
As shown in fig. 4, four first wipers 11 and four second wipers 12 are attached to the wiper support member 13. The second wiper 12 may be fixed to the wiper support member 13 so that the position in the traveling direction D1 can be adjusted according to, for example, the degree of insertion of the fixing portion 12c that fixes the second wiper 12 to the wiper support member 13 into the wiper support member 13. The fixing portion 12c is an example of a gap adjusting portion that adjusts the gap between the first wiper 11 and the second wiper 12 in the traveling direction D1. The gap adjustment portion may be formed by adjusting the gap between the first wiper 11 and the second wiper 12 in the traveling direction D1 by moving the position of at least one of the first wiper 11 and the second wiper 12.
As shown in fig. 3 and 5, the wiper support member 13 is provided with a pair of left and right screw holes 13a, for example, extending through in the front-rear direction.
The two guide portions 20 are, for example, screw shafts extending in the front-rear direction, and are disposed so as to penetrate through the screw holes 13a and 13a of the wiper support member 13. Therefore, the wiper unit 10 can be moved in the front-rear direction by rotating the guide 20.
The ink receiving unit 30 receives ink that falls from the nozzle surfaces 112a-1 of the head modules 111a and 112a together with paper dust, and the like. The ink thus dropped includes the cleaning ink PI dropped by the wiping of the first wiper 11 and the second wiper 12.
The ink in the ink receiving portion 30 can flow from the discharge portion 30b of the ink receiving portion 30 shown in fig. 3 to the waste liquid accommodating portion via a waste liquid path not shown by tilting the wiper mechanism 1 at the retracted position shown in fig. 1. The ink receiving portion 30 has, for example, a rectangular parallelepiped shape that opens upward. Therefore, the inner bottom surface of the ink receiving portion 30 becomes the ink receiving surface 30 a. The ink receiving portion 30 rotatably supports the distal end of the guide portion 20.
The wiper drive unit 40 includes, for example, two motors 41.
The motor 41 is an example of a driving device (actuator) that drives the wiper unit 10 (the first wiper 11 and the second wiper 12), and is coupled to the guide 20 by, for example, adhesion. The motor 41 rotates the guide 20 to move the wiper unit 10 forward and backward as described above. Further, for example, a single motor 41 may rotate a drive belt to rotate the two guide portions 20 via pulleys in the drive belt. Alternatively, only a single motor 41 and a single guide 20 may be arranged, and the wiper unit 10 may be moved in the front-rear direction by the single guide 20.
The wiping of the nozzle surface 112a-1 by the first wiper 11 and the wiping of the bottom surface of the shroud 112a-2 by the second wiper 12 will be described below.
Fig. 10 and 11 are enlarged perspective views for explaining the flow of the cleaning ink PI at the time of wiping.
Fig. 12 is an enlarged front view for explaining the flow of the cleaning ink PI at the time of wiping.
Fig. 13 is an enlarged front view for explaining the cleansing ink PI attached to the bottom surface of the masking plate 112 a-2.
Fig. 14 and 15 are left side views for explaining gaps G1 and G2 between the first wiper 11 and the second wiper 12.
Before the first wiper 11 and the second wiper 12 perform wiping, first, as shown in fig. 6, the suction conveyance unit 120 is moved to a position below the printing position shown in fig. 1, and the wiper mechanism 1 is moved between the printing unit 110 and the suction conveyance unit 120. As shown in fig. 10 and 12, the head modules 111a and 112a discharge the cleaning ink PI. Thereby, the cleaning ink PI discharged from the plurality of nozzles 112a-1a shown in fig. 7 is intensively spread at a plurality of locations.
Then, the first wiper 11 and the second wiper 12 move in the traveling direction D1 with their front ends overlapping the nozzle surfaces 112a-1 of the head modules 111a and 112a and the bottom surface of the cover plate 112a-2 upward in the extending direction D2. Therefore, the first wiper 11 and the second wiper 12 perform wiping while moving in the traveling direction D1 in a state where the front ends are warped and bent rearward in the traveling direction D1.
As a result, as shown in fig. 10 and 11, the cleaning ink PI wiped by the first wiper 11 is transferred along the wiping surface 11a of the first wiper 11 and the side surface 12b (left side surface) of the second wiper 12, and drops in the direction of gravity together with paper dust, dirt, and the like onto the ink receiving surface 30a of the ink receiving portion 30.
Here, as shown in fig. 13, even if the cleansing ink PI is attached to the bottom surface of the mask 112a-2, the bottom surface of the mask 112a-2 has higher wettability than the nozzle surface 112a-1 and is located below, and therefore, the cleansing ink PI is difficult to return from the bottom surface of the mask 112a-2 to the nozzle surface 112 a-1.
Incidentally, in order to transfer the cleaning ink PI wiped by the first wiper 11 along the side surface 12b of the second wiper 12, for example, the fixing portion 12c of the second wiper 12 shown in fig. 4 and 5 may be used and the gap G1 between the first wiper 11 and the second wiper 12 may be adjusted as shown in fig. 14 so that the cleaning ink PI is easily dropped by capillary force. For example, the first wiper 11 and the second wiper 12 have a thickness of 0.5mm in the traveling direction D1 and a gap G1 of 2mm or 3 mm.
As shown in fig. 15, if the gap G2 between the first wiper 11 and the second wiper 12 is too large, the cleaning ink PI wiped by the first wiper 11 does not pass along the side surface 12b of the second wiper 12. On the other hand, if the first wiper 11 and the second wiper 12 are arranged in contact, the contact pressure with respect to the nozzle surface 112a-1 becomes uneven in the width direction D3 of the first wiper 11.
The gaps G1 and G2 between the first wiper 11 and the second wiper 12 can be adjusted according to the physical properties (e.g., viscosity and wettability) of the cleaning ink PI, the cleaning amount (e.g., a change in the dischargeability due to a change in the physical properties of the ink with time), and the like, and the materials of the first wiper 11 and the second wiper 12. In order to facilitate the transfer of the cleaning ink PI wiped by the first wiper 11 along the side surface 12b of the second wiper 12, the first wiper 11 may be inclined such that the right end portion of the first wiper 11 on the side of the second wiper 12 is located behind the left end portion of the first wiper 11 in the traveling direction D1.
After the first wiper 11 and the second wiper 12 wipe all the head modules 111a and 112a (the nozzle surfaces 112a-1 and the masking plates 112a-2), the head modules 111a and 112a drive the piezoelectric elements, and the color mixture of the ink in the nozzles 121a-1a can be improved by the flushing operation of ejecting the ink from the nozzles 121a-1 a. Thereafter, the suction conveying unit 120 shown in fig. 6 moves downward, and the wiper mechanism 1 moves to the retracted position shown in fig. 1. In the retracted position, the wiper unit 10 preferably returns to the rear in the traveling direction D1. The suction conveyance unit 120 is raised to a position close to the printing unit 110 when printing is performed, and is further moved to a lower standby position when printing is not performed.
In the present embodiment described above, the wiper mechanism 1 includes: a first wiper 11 that wipes the nozzle surfaces 112a-1 of the inkjet heads 111, 112 ( head modules 111a, 112 a); and a second wiper 12 that is disposed on the front side in the traveling direction D1 of the first wiper 11 so as to be shifted from the first wiper 11 in the width direction D3 orthogonal to the traveling direction D1 and that moves parallel to the first wiper 11.
Thus, even if the cleaning ink PI wiped off by the first wiper 11 is deposited on the first wiper 11, the cleaning ink PI can be transferred along, for example, the side surface 12b of the second wiper 12 and dropped into the ink receiving portion 30. Therefore, the following can be suppressed: the ink deposited on the first wiper 11 adheres to and remains on the side surfaces of the inkjet heads 111 and 112 ( head modules 111a and 112a), or cannot be completely wiped off, and causes wiping residue on the nozzle surface 112 a-1. Therefore, according to the present embodiment, the wiping performance of the ink (for example, the cleaning ink PI) can be improved.
In the present embodiment, the wiper mechanism 1 includes the second wiper 12 which is disposed on the front side in the traveling direction D1 of the first wiper 11 so as to be shifted from the first wiper 11 in the width direction D3 and to move parallel to the first wiper 11, and the first wiper 11 and the second wiper 12 are disposed so as to overlap only partially in the traveling direction D1 of the first wiper 11, so that a capillary force acts between the end of the first wiper 11 and the end of the second wiper 12, and the cleaning ink PI can be easily guided downward.
In the present embodiment, the overlapping region is disposed in a region of the nozzle surface 112a-1 that does not overlap with the nozzle 112a-1a in the traveling direction D1 of the first wiper 11. This can prevent the wash ink PI from remaining on the nozzles 112a-1 a. Thus, the wiping performance can be further improved.
The present invention is not limited to the above-described embodiments, and can be embodied by modifying the components in the implementation stage without departing from the gist thereof. In addition, various inventions can be formed by appropriate combinations of a plurality of constituent elements disclosed in the above embodiments. For example, all the components described in the embodiments may be appropriately combined. Of course, various modifications and applications can be made without departing from the spirit and scope of the invention. Hereinafter, the invention described in the claims at the beginning of the present application will be described in addition.
[ additional notes 1]
A wiper mechanism, characterized in that,
the wiper mechanism includes:
a first wiper that wipes a nozzle surface of the inkjet head; and
a second wiper that is disposed on a front side in a traveling direction of the first wiper, is shifted from the first wiper in a width direction orthogonal to the traveling direction, and moves in parallel with the first wiper,
the first wiper and the second wiper are configured to overlap only partially in the direction of travel.
[ appendix 2]
The wiper mechanism according to supplementary note 1, wherein,
the overlapped region does not overlap with the nozzles of the nozzle face in the traveling direction.
Claims (2)
1. A wiper mechanism, characterized in that,
the wiper mechanism includes:
a first wiper that wipes a nozzle surface of the inkjet head; and
a second wiper that is disposed on a front side in a traveling direction of the first wiper, is shifted from the first wiper in a width direction orthogonal to the traveling direction, and moves in parallel with the first wiper,
the first wiper and the second wiper are configured to overlap only partially in the direction of travel.
2. Wiper mechanism according to claim 1,
the overlapped region does not overlap with the nozzles of the nozzle face in the traveling direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-016169 | 2020-02-03 | ||
| JP2020016169A JP7420575B2 (en) | 2020-02-03 | 2020-02-03 | wiper mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113199868A true CN113199868A (en) | 2021-08-03 |
| CN113199868B CN113199868B (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011510774.0A Active CN113199868B (en) | 2020-02-03 | 2020-12-18 | Wiper mechanism |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7420575B2 (en) |
| CN (1) | CN113199868B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001199076A (en) * | 2000-01-19 | 2001-07-24 | Canon Inc | Ink jet recorder |
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| Publication number | Publication date |
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| JP7420575B2 (en) | 2024-01-23 |
| JP2021122976A (en) | 2021-08-30 |
| CN113199868B (en) | 2022-10-14 |
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