JP2003089211A - Ink jet recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink jet recorder which can surely move a wiping means for a recording head. SOLUTION: A wiper blade 81 for wiping a nozzle face 3a of the recording head 3 moves in accordance with the movement of a gear holder 84. The gear holder 84 is moved by a pressing force received from a first cam face 65b and a second cam face 65d of a cam 65.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus having a recording head wiping means capable of ejecting ink.

[0002]

2. Description of the Related Art As a recording method for a printer or the like, an ink jet recording method for recording on a recording paper (recording medium) by ejecting ink from an ejection port constituting a nozzle is a low noise non-impact recording method. In addition, since it has a high density and a high speed recording operation, it has been widely adopted in recent years.

A general serial scan type ink jet recording apparatus is a means for driving a carriage carrying a recording head, a conveying means for conveying recording paper, and
A control unit for controlling these is provided. Further, as the ejection method for ejecting the ink from the ejection port of the recording head, a method of pressurizing the ink by using an electromechanical transducer such as a piezo element, or an electromagnetic wave such as a laser is radiated to the ink to generate heat, There is a method of utilizing the bubbling energy of heat generation, or a method of heating the ink by an electrothermal converter element such as a heating resistor to utilize the bubbling energy of the ink. In these systems, the ink jet recording apparatus of the type that ejects ink droplets by using thermal energy can arrange ejection ports at a high density, and thus can perform high resolution recording.
In particular, a recording head using an electrothermal converter element as an energy generating element can be easily miniaturized, and in the recent semiconductor manufacturing field, technological progress and reliability are remarkably improved.
By applying C technology and micro processing technology and making full use of their advantages, high density mounting is easy,
Moreover, the manufacturing cost can be kept low.

In such an ink jet recording apparatus, in order to prevent recording failure due to clogging of the ejection port of the recording head, a recovery means for maintaining a good ink ejection state in the recording head is provided. As one of the recovery means, a means for sucking and discharging the ink from the discharge opening into the cap by introducing a negative pressure into the cap while the discharge opening is covered with the cap (“suction recovery means”). Also called).
By this means, high-viscosity ink, fine dust, and bubbles in the ink can be sucked and discharged from the ejection port together with the ink from the inside of the recording head and the ink supply flow path. As another recovery means, the surface of the recording head on which the ejection openings are formed (hereinafter also referred to as the “ejection opening surface”) is wiped with a flexible wiper blade, and fine dust or residual ink adhered to the surface of the recording head. By removing
There is a means for cleaning the surface of the recording head (also called "wiping means"). Further, as another recovery means, the ink ejection state is stabilized by ejecting ink, which does not contribute to image recording, from the ejection port of the recording head into the cap or the like as needed just before starting the recording. There is a means (also referred to as "preliminary ejection means") for causing the discharge.

As a method for driving the wiper blade in the wiping means, there is a method in which a pressing means such as a cam rotated by a rotary drive source such as a rotation motor is provided and the wiper blade is driven by the pressing force from the pressing means. is there. This drive method is widely used because it has the advantage that the pressing force of the wiper blade by the pressing means can be controlled by simply rotating the rotary drive source to accurately realize a complicated operation of the wiper blade.

Conventionally, as a method for driving such a wiper blade, the following method has been adopted when the moving range of the wiper blade is large. That is, when the wiper blade is moved in the forward direction away from the rotary drive source and the ejection port surface of the recording head is wiped by the wiper blade, the cam surface provided on the wiper blade side by the arm directly connected to the rotary drive source. Is pressed to move the wiper blade in the forward direction together with the cam surface forming member and the like. On the other hand, when the wiper blade is moved in the opposite direction to approach the rotary drive source and returned to the original position, the elastic restoring force of the elastic member such as a spring is used. That is, in order to prevent the wiper blade from coming into contact with the ejection port surface of the recording head, the recording head is retracted out of the moving range of the wiper blade, and the elastic restoring force of an elastic member such as a spring causes the wiper blade to move to the cam surface. It is moved in the opposite direction together with the forming member. Therefore, the wiper blade is returned in the opposite direction only by the elastic restoring force of the elastic member.

[0007]

However, the conventional method of returning the wiper blade in the opposite direction only by the elastic restoring force of the elastic member has the following problems.

That is, when the wiper blade is returned in the reverse direction, if the recording head cannot be retracted out of the movement range of the wiper blade due to a jam of the recording paper in the recording apparatus, an excessive load is applied to the wiper blade. There is a risk that the wiper blade cannot be moved to the regular return position only by the elastic restoring force of the elastic member. If the cap or the like constituting the recovery means operates without the wiper blade returning to the normal return position, they may interfere with each other, resulting in a failure of the recording apparatus.

It is an object of the present invention to provide an ink jet recording apparatus capable of reliably moving the wiping means of the recording head.

[0010]

The ink jet recording apparatus of the present invention is an ink jet recording apparatus provided with a wiping means for performing recording by using a recording head capable of ejecting ink and wiping the recording head by moving the recording head. As a drive unit for moving the wiping unit, two or more sets of drive units for pressing the wiping unit in the same moving direction are provided.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Note that the same reference numerals denote the same or corresponding parts throughout the drawings.

FIG. 1 is a schematic perspective view showing a structural example of an ink jet recording apparatus to which the present invention is applied.

In the ink jet recording apparatus 1 of FIG. 1, a recording head 3 as a recording means has ejection ports arranged on a surface facing a recording paper (recording medium) 11 in a direction substantially orthogonal to an arrow A main scanning direction. A plurality of rows (also referred to as “nozzle rows”) are formed, and ink of different colors is ejected for each nozzle row. The recording head 3 is supplied with ink of each color from the ink tank 4 to each nozzle row via each supply tube 5. The recording head 3 is mounted on a carriage 2, and the carriage 2 has a frame 6 at both ends.
It is supported by a guide shaft 7 and a guide rail 8 which are fixed to each other and arranged parallel to each other so as to be reciprocally movable in the main scanning direction. The carriage 2 is reciprocally driven in the main scanning direction by a belt driving mechanism including a motor (not shown).

A transport roller 9 and a pinch roller (not shown) which is in pressure contact with the transport roller 9 are provided in the vicinity of the moving range of the carriage 2. A cassette 10 that is attachable to and detachable from the frame 6 is attached to the front part of the inkjet recording apparatus 1. The recording paper 11 is supplied from the cassette 10 to reach a recording position facing the recording head 3,
Then, the sheet is conveyed in the sub-scanning direction indicated by arrow B, which is substantially orthogonal to the main scanning direction. That is, the recording paper 11 is conveyed in the sub-scanning direction by the rotation of the conveying roller 9 and the pinch roller while being sandwiched by the conveying roller 9 and the pinch roller. The inkjet recording apparatus 1 moves the recording head 3 together with the carriage 2 in the main scanning direction, and ejects ink from the ejection ports of the recording head 3, and conveys the recording paper 11 by a predetermined amount in the sub scanning direction. By repeating the operation, the image is recorded on the recording paper 11. The recording paper 11 after the recording of the image is discharged onto the paper discharge stacker 13.

At the home position, which is set near one side of the moving range of the carriage 2, a recovery means 50 capable of facing the recording head 3 is provided. The recovery means 50 is
The recovery process is performed during the recording standby, before and after the recording operation, or between the recording of the image for each line to prevent clogging of the ejection port of the recording head 3 and to maintain good ink ejection performance. (Capping, suction recovery processing, wiping processing, etc.) are performed.

Next, referring to FIGS. 2, 3 and 4,
The head recovery means 50 will be described.

FIG. 2 is a schematic cross-sectional view of the head recovery means 50 and the main part in the peripheral portion thereof.

In the recording head 3, 3a is an ejection port surface (hereinafter also referred to as "nozzle surface") on which ink ejection ports are formed. The recording head 3 is reciprocally moved together with the carriage 2 in the main scanning direction on the front and back sides of the paper surface in FIG. The head recovery means 50 is provided with a cap 52 at a position facing the nozzle surface 3 a of the recording head 3 when the carriage 2 moves to the home position. The structure of the recording head 3 and the cap 52 will be described with reference to FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

The inside of the recording head 3 is of black (Bk), cyan (C), magenta (M), and yellow (Y) as in a typical recording head provided in an ink jet recording apparatus capable of recording a color image. It is divided into ink chambers that contain ink. A filter 3b for preventing foreign matter from entering is attached to each ink chamber so as not to clog the ejection port forming the nozzle.
An ink layer and an air layer are formed in the spaces above and below b. Cyan (C), Magenta (M), Yellow (Y)
Nozzle arrays for ejecting the ink are reduced as much as possible in order to reduce the size of the recording apparatus, improve the accuracy of ink landing on the recording paper 11, and shorten the recording time by reducing the moving distance of the carriage 2. And black (B
k) The nozzle rows for ejecting ink are slightly separated from the nozzle rows for ejecting other ink.

A cap 52a for black (Bk) ink and a cap 52b for color (C, M, Y) ink are formed on the cap 52, and a nozzle row having a different frequency of use is selected by suction selection described later. It is possible to reduce the amount of waste ink by separately performing the suction recovery process. The cap 52 is integrally formed on the upper surface of the cap base 60, and the absorber 14 is provided inside each of the caps 52a and 52b. The cap base 60 is provided with a claw 60a having a mounting hole, and the boss 61a provided on the cap holder 61 is fitted into the mounting hole of the claw 60a, so that the cap base 60 is mounted on the cap holder 61. It is swingably attached to. The cap base 60 is a cap spring 15
Is urged upward by.

An ink supply port 3c (see FIG. 2) is formed in each ink chamber of the recording head 3, and these ink supply ports 3c are supplied to the respective ink colors by the supply tube 5 for each ink color. It is connected to the tank 4. The ink tank 4 is configured and arranged so as to maintain a predetermined water head difference H with respect to the recording head 3 so that ink does not drip from the recording head 3 except during recording. When the ink in the recording head 3 has decreased due to the ejection or suction and discharge of the ink from the recording head 3, the recording head 3
Due to the negative pressure inside, ink is automatically supplied from the ink tank 4 through the supply tube 5. A valve 12 is provided in the ink supply path including the supply tube 5, and the valve 12 can open and close the ink supply path.

In FIG. 2, the recovery base 51 supports and fixes the components of the recovery means 50 at a position facing the recording head 3 and the valve 12.

In each of the black (Bk) ink cap 52a and the color (C, M, Y) ink cap 52b of the cap 52, the atmosphere communication is made to the right side in FIG. 2 from the longitudinal center of the nozzle row. One end of the tube 71 is attached, and the other end thereof is connected to each atmosphere communication valve 72. Also, the cap 52
In each of a and 52b, a suction tube 53 into which ink or the like can flow is attached to the left side in FIG. 2 with respect to the longitudinal center of the nozzle row.
Is passed between the tube frame 54 and the pump frame 55. In FIG. 2, caps 52a and 52b
Each peripheral configuration of is shown by the same cross section.

A pump roller holder 56 is rotatably supported on the pump frame 55, and on the pump roller holder 56, pump rollers 57 for black ink and color ink are symmetrically arranged about a pump frame rotation shaft 55a. Two are provided. The pump spring 58 moves the pump roller 57 in the direction of pressing the tube frame 54.
Energize. A tube pump 59 is configured by the tube 53, the tube frame 54, the pump frame 55, the pump roller holder 56, and the pump roller 57.

A cam 65 is rotatably supported on one side (right side in FIG. 2) of the recovery base 51. The cam 65 has the cam plates 65a, 65 necessary for the operation of the recovery means 50.
b, 65c, 65d and 65e are integrally formed.

On the shaft 73 fixed to the recovery base 51,
A total of two atmosphere communication arms 74 for black ink and color ink, a cap arm 62, and a single-opening arm 111 are pivotally supported. The atmosphere communication spring 75 is
A total of two air-communicating arms 74 are provided so as to urge each of them in a counterclockwise direction, and the urging force of the two valve arms 74b formed at the other end of the air-communicating arm.
The atmosphere communication valves 72 for black ink and color ink are closed via. When the cam plate 65a rotates, the two atmosphere communicating arms 74 simultaneously rotate in accordance with the protrusion 65aa of the cam plate 65a, and the valve arm 74b formed on the other end of the atmosphere communicating arm operates. The two atmospheric communication valves 72 are opened and closed at the same time.

The cap holder 61 has a guide portion 61.
Since a is engaged with the slide rib 51a of the recovery base 51 and its guide hole 61b is engaged with the slide shaft 51b of the recovery base 51, it is slidably supported in the vertical direction. The cap arm 62 is rotatably supported by a shaft 73. The cap arm 62 has a cam plate 65 to which the cam follower portions 62a and 62b correspond.
It is swung by following the rotation of b and 65c. At the other end of the cap arm 62, a cap drive roller portion 62c that engages with the groove portion 61c of the cap holder 61 is formed, and the cap arm 62 slides up and down as the cap arm 62 swings.

Reference numeral 81 is a wiper blade made of a flexible material such as urethane, and the wiper holder 8
2 is fixed and supported. The wiper holder 82 is supported by a portion (not shown) so as to be slidable in the left-right direction in FIG. 2 with respect to the recovery base 51. The wiper cleaner 83 cleans the wiper blade 81 by coming into contact with the tip portion 81 a of the wiper blade 81 as the wiper blade 81 moves.

Reference numeral 66 denotes a valve shaft, which is slidably supported at a portion (not shown) with respect to the recovery base 51 in the right direction in FIG. 2 and can be slid by a cam plate 65e (not shown). The valve 12 is opened and closed by. 10
Reference numeral 1 is a selection cam, which is provided with cam portions 101a and 101b. The selection cam 101 is rotatable about a shaft 102, a portion (not shown) is biased counterclockwise by a spring, and the cam portion 101a comes into contact with a stopper 51c provided on the recovery base, whereby the selection cam 101 is rotated. The clockwise rotation is stopped. By selectively swinging the two atmosphere communication arms 74 by a selection operation described later, the atmosphere communication valves 7 for black ink and color ink
Each of the two can be selectively brought into the atmosphere communication state.

FIG. 4 is a view of the drive unit of the recovery means 50 as seen from the front side of FIG.

In FIG. 4, the recovery means 50 is provided with a stepping motor 91 which is a drive source,
The pinion gear 91a of the stepping motor 91 is
It is connected to a pendulum gear transmission mechanism 93 via a reduction gear 92. The pendulum gear transmission mechanism 93 includes a base gear 93a connected to the reduction gear 92, and a pendulum arm 93 swingably attached to the base gear 93a.
b and a planetary gear 93c attached to the tip of the pendulum arm 93b. The planetary gear 93c meshes with the cam gear 94 when it is located on the right side as shown in FIG. The cam gear 94 and the above-mentioned cam 65 rotate together. A cam gear flag 95 is provided on the outer circumference of the cam gear 94. The cam gear flag 95 is a light shield plate that shields the light from the optical sensor 96, and the phase of the cam gear 94 can be known by detecting whether or not the light is shielded by the optical sensor 96. .

When the stepping motor 91 rotates normally (counterclockwise in FIG. 5), the reduction gear 92 and the base gear 93a of the pendulum gear transmission mechanism 93 rotate in conjunction with each other, and the pendulum arm 93b moves. As shown in FIG. 4, the planetary gear 93c is inclined to the right side and meshes with the cam gear 94. As a result, the cam gear 94 rotates counterclockwise. This time,
The cam plates 65a to 65e integrated with the cam 65 are also the cam gear 94.
And rotates counterclockwise integrally with.

When the stepping motor 91 rotates in the reverse direction (clockwise in FIG. 5), the reduction gear 92 and the base gear 93a rotate in conjunction with each other, the pendulum arm 93b tilts to the left in FIG. 4, and the planetary gear 93c moves. The selection cam 101 meshed with the selection gear 103 and integrally connected to the selection gear 103 is rotated.

In this way, the pendulum-like transmission mechanism 93 functions as a one-way drive transmission means, and drives the cam gear 94 counterclockwise when the stepping motor 91 rotates normally.
When the stepping motor 91 rotates in the reverse direction, the selection cam 101 is driven clockwise.

A stepping motor 97 is attached to the recovery means 50 as another drive source, and the pinion gear 97a of the stepping motor 97 is a reduction gear 9a.
8 is connected to the pump gear 99. The tube pump 59 described above rotates integrally with the pump gear 99.

When the stepping motor 97 rotates normally (counterclockwise in FIG. 4), the reduction gear 98 and the pump gear 99 rotate in association with each other. As a result, the pump frame 55 rotates counterclockwise in FIG.
Between the tube frame 54 and the suction tube 53.
Move while crushing. By this pump operation,
The pressure in the cap 52 becomes lower than the atmospheric pressure, and high-viscosity ink is ejected from the ejection port of the capped recording head 3.
Fine dust and air bubbles in the ink liquid can be sucked and discharged. As a result, it is possible to prevent clogging of the ejection port and the like, and maintain good ink ejection performance in the recording head 3.

FIG. 5 is an explanatory view of the drive mechanism of the wiper blade 81.

The cam 65 is provided with a cylindrical first cam surface 65b via a first arm 65a. The two guide dowels 84a formed integrally with the gear holder 84 are
A guide hole 51x formed in the recovery base 51 is held so as to be slidable in the horizontal direction. The gear holder 84 is constantly urged rightward in FIG. 5 by the elastic force of the spring 85. The first speed increasing gear 86, the idler gear 87, and the second speed increasing gear 88 are rotatably supported by shafts 84x, 84y, and 84z formed integrally with the gear holder 84, respectively. A rack 51y formed on the recovery base 51,
The small gear 86a of the first speed increasing gear 86 meshes with the small gear 86a. The small gear 86a of the first speed increasing gear 86 rotates with the movement of the gear holder 84 in the left-right direction in FIG. 5, and the rotation thereof is
The large gear 86b of the first speed increasing gear 86, the idler gear 87,
It is amplified by the small gear 88a of the second speed increasing gear 88 and transmitted to the large gear 88b of the second speed increasing gear 88. The large gear 88b of the second speed increasing gear 88 meshes with the rack 82a formed integrally with the blade holder 82.

Next, the operation when the wiper blade 81 is driven in the forward direction (to the left of the arrow C1 in FIG. 5) will be described.

As the cam 65 rotates counterclockwise, the cam surfaces 84b, 84c formed on the gear holder 84.
Then, the cylindrical first cam surface 65b formed on the cam 65 sequentially abuts and is guided, whereby the gear holder 84 moves to the left of the arrow C1. As the gear holder 84 moves leftward, the blade holder 82 moves leftward more than the amount of movement of the gear holder 84 due to the speed increasing function of the gear train. As the blade holder 82 moves, the wiper blade 81 fixed thereto wipes the face surface 3 a of the recording head 3.

Next, the operation when the wiper blade 81 is driven in the reverse direction (to the left in the arrow C2 in FIG. 5) will be described.

By further rotation of the cam 65 in the counterclockwise direction, a cylindrical first cam surface 65b integrally formed with the cam 65 is formed.
Is from the cam surface 84c on the gear holder 84 to the cam surface 84d.
Move to. Since the gear holder 84 is biased to the right by the elastic force of the spring 85, the cylindrical first cam surface 65b moves onto the cam surface 84d, so that the gear holder 84 moves to the right of the arrow C2 as shown in FIG. Move horizontally. During normal operation, the cam surface 84c of the gear holder 84 moves to a position where it abuts the outer peripheral surface 65f of the cam 65 as the cam 65 rotates. When the cam surface 84c of the gear holder 84 hits the outer peripheral surface 65f of the cam, the wiper blade 81 moves to a position where the wiper blade 81 has passed the face surface 3a of the recording head 3 as shown in FIG. Therefore, even if the cap 52 moves upward to cap the recording head 3 thereafter, the movement of the cap 52 is not hindered.

If the recording head 3 remains in the moving area of the wiper blade 81 as shown in FIG. 6 due to a jam of the recording paper 11 in the recording apparatus, etc. , Wiper blade 8
1 and the face surface 3a of the recording head 3 have a strong frictional resistance, and there is a possibility that the gear holder 84 cannot be returned to the right of the arrow C2 only by the urging force of the spring 85. However, in this case, the first cam surface 65b of the cam 65 is not attached to the gear holder 84.
It hits the cam surface 84f formed in the above and pushes the gear holder 84 to the right of the arrow C2. Therefore, the gear holder 84 is moved in the right direction of the arrow C2 until the first cam surface 65b moves to the apex of the cam surface 84f of the gear holder 84. Then, the first cam surface 65b moves on the cam surface 84g of the gear holder 84. At this time, the gear holder 84 is not driven.

In FIG. 6, the first cam surface 65b has the gear holder 8
4 shows a state in which the cam surface 84f has moved to the apex of the cam surface 84f, and even if the cam 65 further rotates counterclockwise from this state,
Depending on the first cam surface 65b of the cam 65, the gear holder 84
Is not driven. Therefore, if the gear holder 84 is not returned to the right in the state of FIG. 6,
The wiper blade 81 is the face surface 3a of the recording head 3.
The gear holder 84 remains below the recording head 3 without passing through a position facing the recording head 3. Therefore, when the cap 52 moves upward to cap the recording head 3 in the state of FIG.
May interfere with the movement of the.

In order to cope with such a situation, in this example, the gear holder 84 is formed with the guide dowel 84h, and the cam 65 is integrally formed with the second cam surface 65d. That is, as the cam 65 rotates, the second cam surface 65d of the cam 65 abuts the guide dowel 84h, thereby forcibly returning the gear holder 84 to the right. FIG. 7 shows a state in which the cam 65 has rotated until the apex portion 65e of the second cam surface 65d hits the guide dowel 84g.

As described above, the cam surface 65d formed on the cam 65 hits the guide dowel 84h to forcibly drive the gear holder 84 to the right. Therefore,
The gear holder 84 is returned to the position where the cam surface 84c of the gear holder 84 abuts the outer peripheral surface 65f of the cam 65, and the wiper blade 81 causes the recording head to move, as in the normal case where the friction load when returning to the right is small. 3 will pass below the face surface 3a. After that, when the cap 52 moves upward due to the capping of the recording head 3, the cap 52 moves to the wiper blade 8
It operates normally without interfering with 1.

In this example, the gear holder 84 is reciprocated to reciprocate the wiper blade 81,
The first cam surface 65b of the cam 65 is attached to the gear holder 84.
Composes a first drive means for pressing and moving, and the second cam surface 65d of the cam 65 composes a second driving means for pressing and moving the gear holder 84.

(Other Embodiments) The drive means for moving the wiper blade 81 is the first cam surface 6 of the cam 65.
5b and the second driving means constituted by the second cam surface 65d of the cam 65 are not limited only to the configuration, and three or more driving means are also provided. It is also possible to have a different configuration. The point is that the wiping means can be moved by the cooperation of two or more driving means. In addition, the wiper blade 81
The recording head 3 may be wiped at least in one of the forward movement and the backward movement.

[0050]

As described above, the present invention is provided with two or more sets of driving means for pressing the wiping means in the same movement direction as the driving means for moving the wiping means of the recording head. The wiping means of the recording head can be reliably moved by cooperating these driving means.

As a result, even when an excessive load is applied to the movement of the wiping means due to the occurrence of a jam of the recording medium in the recording device, for example, the wiping means is forcibly returned to the regular standby position. It is possible to reliably move it, and it is possible to prevent the failure of the recording device due to an abnormal stop in the moving range of the wiping means.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an inkjet recording apparatus to which the present invention is applied.

2 is a schematic cross-sectional view of a peripheral portion of a recovery unit in the inkjet recording apparatus of FIG.

3 is a cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a schematic side view of a drive unit in the recovery means of FIG.

5 is a side view of the wiping mechanism unit included in the recovery means of FIG. 2 when the wiping mechanism unit moves in the forward direction.

FIG. 6 is a side view of the wiping mechanism unit included in the recovery means of FIG. 2 when moving in the reverse direction.

7 is a side view of the wiping mechanism unit included in the recovery means of FIG. 2 when the wiping mechanism unit is moved in the reverse direction.

[Explanation of symbols]

1 Inkjet recording device 2 carriage 3 recording head 4 ink tank 5 supply tubes 6 frames 7 Guide shaft 8 guide rails 9 Conveyor rollers 10 cassettes 11 Recording paper (recording medium) 50 Recovery means 51 Recovery base 52 cap 53 tubes 65 cam 81 wiper blade 82 blade holder 84 gear holder 85 spring 86 1st speed increasing gear 87 Idler Gear 88 Second speed increasing gear

Claims (14)

[Claims] 1. An inkjet recording apparatus comprising a wiping means for wiping the recording head by performing recording by using a recording head capable of ejecting ink, and as a driving means for moving the wiping means. An ink jet recording apparatus comprising two or more sets of driving means for pressing the wiping means in the same moving direction. 2. At least one of said two or more sets of driving means
2. The ink jet recording apparatus according to claim 1, wherein the wiping means is pressed in the moving direction by being rotationally driven. 3. The ink jet recording apparatus according to claim 1, wherein the two or more sets of drive units have different drive ranges for moving the wiping unit. 4. The two or more sets of drive means include first and second drive means, and the first drive means sets a drive range in which the wiping means is moved to a total forward movement range and 7. A partial moving range in the backward direction, wherein the second driving means sets a driving range for moving the wiping means to a moving range in the backward direction excluding the partial moving range. 4. The inkjet recording device according to any one of 1 to 3. 5. The ink jet recording apparatus according to claim 1, further comprising a biasing unit that biases the wiping unit in a forward direction or a backward direction. 6. The wiping unit comprises a wiper blade for wiping a surface of the recording head on which an ink ejection port is formed by at least one of forward and backward movements. The ink jet recording apparatus according to any one of claims. 7. The wiping unit returns to the standby position by moving in a forward direction from a predetermined standby position and then moving in a backward direction.
The inkjet recording device according to any one of 1. 8. The wiping means is provided with an urging means for applying an urging force for returning the wiping means to the standby position, and at least one of the two or more sets of driving means moves the wiping means in a backward direction. The inkjet recording apparatus according to claim 7, wherein the inkjet recording apparatus is moved from a midway position to the standby position. 9. At least one of said two or more sets of drive means
9. The ink jet recording apparatus according to claim 1, further comprising a cam that is rotationally driven about a predetermined axis and that presses the wiping means in a moving direction according to a rotational position. . 10. The drive means of each of the two or more sets includes a cam that is rotationally driven about the same axis and that presses the wiping means in a moving direction according to a rotational position. 9. The inkjet recording device according to any one of 1 to 8. 11. The ink jet recording apparatus according to claim 1, wherein the two or more sets of driving means are driven by the same driving source. 12. The ink jet recording apparatus according to claim 1, further comprising a cap capable of capping an ink ejection port of the recording head. 13. A first moving unit that relatively moves the recording head and the recording medium in a main scanning direction, and relatively moves the recording head and the recording medium in a sub-scanning direction intersecting with the main scanning direction. The inkjet recording apparatus according to claim 1, further comprising: a second moving unit. 14. The inkjet recording apparatus according to claim 1, wherein the recording head includes an electrothermal converter that generates thermal energy used for ejecting ink.