JP3151328B2 - Recovery device for inkjet printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recovery device for an ink jet printer.

[0002]

2. Description of the Related Art Conventionally, many ink jet printers have been commercialized because of their advantages such as low noise and excellent print quality. However, an ink jet head that discharges ink in an ink jet printer tends to be unable or incomplete to discharge ink due to clogging of nozzles due to drying of ink, dirt of nozzles, mixing of bubbles into nozzles, and the like. Therefore, a recovery device having a nozzle cap, a wiping blade, and the like has been conventionally used in an ink jet printer.

FIGS. 9 (a) and 9 (b) show, for example,
1 is a plan view showing the structure of a conventional recovery device as described in JP-A-87268. In FIG. 9, reference numeral 5 denotes an ink jet head, which is mounted on the carriage 4.
The carriage 4 is slidably mounted on a carriage shaft 3 arranged in parallel with the printing paper 2 and reciprocates while driving the carriage motor (not shown) while facing the recording paper 2 wound around the platen 1 on the carriage shaft 3. I do. At the left end of the ink jet head, a pin that is engaged with an arm 7b of a second cap holder 7 described later is arranged.

The wiping blade 8 is made of a soft elastic material and is attached to the blade holder 8b. The wiping blade 8 is disposed at a position where the wiping blade 8 interferes with the nozzle surface 5b of the ink jet head, and wipes the nozzle surface when the ink jet head passes. The cap 6 is made of a soft elastic material and is directly supported by the first cap holder 9. The second cap holder 7 is slidably mounted on the left side of the platen 1 on a holder shaft 12 arranged in parallel with the carriage shaft 3, and the arm portion 7 b engages with the pin 13, whereby the carriage 4 is moved. And can reciprocate on the holder shaft integrally. Part of the first cap holder 9 is the second cap holder 7.
The second cap holder 7 so as to project
Is mounted slidably in a direction perpendicular to the moving direction. A slit 9 is provided at the rear of the first cap holder 9.
b, which is a guide rail 10 having an inclined portion.
9A, the first cap holder 9 is moved back and forth with the movement of the second cap holder 7b, and FIG.
As shown in FIG. 9, the cap 6 may be separated from the nozzle surface 5b of the inkjet head, or as shown in FIG. 9B, the cap 6 may be brought into contact with the nozzle surface 5b of the inkjet head. In this abutted state, the suction pump 11 communicating with the cap 6 is operated to lower the pressure in the cap 6 and perform capping.

[0005]

As described above, in the recovery device of the prior art ink jet printer, the carriage must be moved during the wiping operation. In addition, in order for the cap to contact the nozzle surface for capping, it is necessary to move the carriage by a considerable distance. Therefore, there are the following problems. (1) The stroke of the carriage becomes long, which is not preferable in terms of the volumetric efficiency of the printer. (2) The carriage must be reciprocated many times in order to sufficiently perform wiping, which is not preferable because it generates noise and the wiping time becomes long.

The present invention solves such a problem in the conventional recovery apparatus, and has a short carriage stroke for the recovery operation, and is capable of performing a high-speed and smooth recovery of an ink-jet printer without generating repeated wiping noises. It is intended to provide a device.

[0007]

According to the present invention, there is provided an ink jet head which moves relative to a recording sheet, a cap for capping the ink jet head, and a wiping for wiping the ink jet head. In a recovery device for an ink jet printer having a blade, the ink jet head can be moved to a position opposite to the cap and the wiping blade, and the cap is moved by the first movable holding member, and the wiping blade is moved by the second movable holding member. In the stopped state, the nozzle surface of the ink jet head is held so as to be able to contact and separate therefrom, and the wiping blade is moved while rubbing the nozzle surface by blade driving means attached to the first movable holding member. .

[0008]

[Action]

(1) According to the present invention, in a state where the ink jet heads are stopped at the corresponding positions, the first or the second
Wiping or capping operation can be performed by bringing the wiping blade or cap into contact with the nozzle surface of the inkjet head by the operation of the movable member, so that there is no need to move the inkjet head specially for the wiping or capping operation. .
Therefore, the stroke of the carriage of the ink jet head required for the recovery operation can be significantly shortened as compared with the related art. (2) Further, according to the present invention, the wiping operation is smoothly performed by continuously driving the wiping blade in one direction by the blade driving means in a state where the carriage is stopped without depending on the reciprocating operation of the carriage. So that you can
The wiping operation can be repeated at high speed. (3) Further, according to the present invention, the wiping blade and the cap are moved back and forth through the one-way clutch by the forward rotation of the common drive shaft as described later, and the wiping and the suction operation of the cap are performed by the reverse rotation of the drive shaft. Since it can be performed, the configuration of the apparatus is simplified. (4) Further, according to the present invention, the meshing of the sliding gears rotated by the common drive source is automatically switched between the gears for driving the recovery device and the gears for driving the platen. Can be driven by a common drive source, and the volumetric efficiency of the printer can be increased.

[0009]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a first embodiment of the present invention, respectively.
3A and 3B are a perspective view and a plan view showing the structure of the embodiment. FIG.
FIG. 2 is a perspective view showing a part of the first embodiment of the present invention. 1
Reference numeral 01 denotes a substrate, and the first side plate 10 is perpendicular to the substrate 101.
The third and second side plates 105 are mounted facing each other. Stepping motor 1 serving as a driving source of the apparatus such that motor shaft 107b projects from the inside to the outside of the first side plate
07. A first drive gear 109 is attached to the motor shaft 107b. The first side plate 103 further includes a first side plate 103.
The rotation shaft 111d of the reduction gear 111 having the driven gear 111b and the second drive gear 111c is rotatably held such that the reduction gear is protruded outside. The first side plate 103 and the second side plate 105 rotatably hold the drive shaft 115.

The drive shaft 115 protrudes outside the first side plate 103, and a second driven gear 113 is attached to the protrusion. The first drive gear 109 meshes with a first driven gear 111b having five times the number of teeth, for example, and the second drive gear 111
c meshes with a second drive gear having, for example, twice the number of teeth. As a result, the rotation of the motor shaft 107b is reduced to, for example, 1/10 and transmitted as the rotation of the drive shaft 115. Drive shaft 1
The second cam 121, the first cam 119, and the photo interrupter shielding plate 123 are fixed to the outer periphery of the one-way clutch 117 from a portion closer to the first side plate on a part of the one-way clutch 117. Have been. When the drive shaft 115 rotates forward (clockwise in FIG. 1), the one-way clutch 117 rotates integrally with the drive shaft because the frictional force between the drive shaft 115 and the drive shaft increases.
When the motor 15 rotates in reverse, no frictional force acts and only the drive shaft rotates and the one-way clutch does not rotate. The first and second cams rotate integrally when the one-way clutch rotates, and each of the blade drive levers 12 and
9 and the cap drive lever 131 are driven. At this time, the photointerrupter shielding plate 123 also rotates integrally, and the photointerrupter holding member 1 attached to the second side plate is rotated.
An optical signal is generated at a slit portion of the photo interrupter 126 supported by 24, and the rotation angle of the cam (or the rotation angle of the one-way clutch 117) is detected.

The third drive gear 125 is directly fixed between the drive shaft 115 and the second side plate 105 by approaching the one-way clutch. First side plate 103 and second side plate 10
5 holds a drive lever support shaft 127 on the opposite side of the stepping motor 107 with respect to the drive shaft 115, in parallel with the drive shaft. The drive lever support shaft 127 is provided with the blade drive lever 12.
9. Bearing hole 129 provided in cap drive lever 131
b, 131b, and holds the blade drive lever 129 and the cap drive lever 131 rotatably. The blade drive lever 129 and the cap drive lever 131 are both L-shaped, and hold the first and second cam rollers 133 and 135 rotatably at the ends of their lateral arms. Also, first and second coil springs 137 and 139 are attached to the horizontal arms of these drive levers 129 and 131 so that tension acts between the first and second coil springs 137 and 139 to bias the horizontal arms upward. The cam rollers 133 and 135 are always pressed against the first and second cams 119 and 121, respectively.

Thus, the first and second cams 119,
The change in the radius along with the rotation of 121 is the first and the second, respectively.
Of the blade drive lever 129 and the cap drive lever 131 around the drive lever support shaft 127 via the cam rollers 133 and 135. The spring fixing member 141 is located above the horizontal arm of the drive lever.
And the second side plate. The blade cover 143 is attached to the end of the vertical arm of the blade drive lever 129. The rotation shafts of the first and second belt rollers 145 and 147 are rotatably held inside the blade cover. A blade belt 153 surrounding the first and second belt rollers 145 and 147 and having a protruding wiping blade 151 on the outside is attached as a belt hook. As shown in FIG. 3, the blade cover 143 has an opening 143b on a surface facing an ink jet head described later. The wiping blade 151 protrudes from the opening, and moves up and down with the rotation of the blade belt 153. A rotation shaft 145b of the first belt roller protrudes outside the surface of the blade cover 143 facing the second side plate 105, and an idle gear shaft 157b is fixed in parallel with the rotation shaft. The drive gear 155 is fixed, and the idle gear 157 is rotatably held on the idle gear shaft 157b.

A cylindrical cap joint 171 is held above the vertical arm of the cap driving lever 131 so as to extend through the arm and parallel to the first side plate 103. Cap joint 17
Reference numeral 1 denotes a vent hole 173 (not shown) provided on the bottom wall of the cap 6 on the side protruding toward the inkjet head 5.
The cap 6 is attached to the cap driving lever 131 at a position facing the nozzle surface 5b of the ink jet head 5 and opens toward the nozzle surface. A portion of the cap joint 171 protruding on the side opposite to the inkjet head is inserted into and attached to an end of a suction tube 175 communicating with the pump 11 described later. The second drive shaft 1 is also provided on the second side plate 105 so as to protrude also outside the side plate.
59 is rotatably mounted via a bearing (not shown). First, a third driven gear 161 is provided between the blade driving lever 129 and the second side plate 105 on the second driving shaft 159.
Is fixed to a shaft, and a bearing of a moving arm 163 that guides the planetary gear 165 close to the shaft is mounted. The moving arm 163 is loosely held with respect to the second drive shaft 159, so that a small rotational torque is generated. It is formed to be transmitted.

The third driven gear 161 meshes with the third drive gear 125 to rotate the drive shaft 115 to the second drive shaft 1.
Tell 59. A planetary gear shaft 163b is fixed to an end of the moving arm opposite to the bearing, and holds the planetary gear rotatably. The planetary gear 165 is the third driven gear 16
1 and can always move around it.
Then, when the stepping motor 107 rotates forward and the third driving gear 125 rotates clockwise, and the third driven gear 161 meshing with the third driving gear 125 rotates counterclockwise, the moving arm 163 also rotates as shown in FIG. Since the planetary gear 165 is rotated counterclockwise and is at a position away from the idle gear 157, the driving mechanism of the blade belt 153 after the idle gear 157 is not driven, but the stepping motor 107 rotates in the reverse direction and the third driven gear 161 is rotated. When the gear rotates clockwise, the moving arm 163 also rotates clockwise as shown in FIG. 1, and the planetary gear 165 meshes with the idle gear 157 to rotate the third driven gear 161 as described later. Mediate to the rotation operation of 153.

A pump drive gear 167 is fixed to a portion of the second drive shaft 159 protruding outward from the second side plate 105. A pump gear body shaft 16 is provided on the outside of the second side plate 105.
9b is fixed and holds the pump gear body 169 rotatably. The pump gear 169 is a pump driven gear 16.
An eccentric shaft holder 169d and an eccentric shaft 169f are integrally provided so as to overlap 9c and a part thereof. The center axis of the eccentric shaft 169f is parallel to the center axis of the pump gear shaft 169b but is eccentric. The pump arm 168 can freely move in and out of the center of the pump 11 mounted on the outer surface of the second side plate and rotate around the central axis.
9f so as to be rotatable. Drive gear 1 for pump
67 meshes with the pump driven gear 169, converts the rotation of the second drive shaft 159 into the rotation of the pump gear 169, rotates the eccentric bearing 169d around its rotation center, and makes the pump arm 168 perform a piston movement. Thus, the pump 11 is driven to perform the suction operation. The pump 11 includes a suction joint 11b and a discharge joint 11c,
Suction tube 175 and waste tube 176, respectively
To communicate with the cap 6 and a waste liquid box (not shown).

The carriage 4 has an ink-jet head 5 mounted thereon, and is guided by first and second guide shafts 185 and 186, and is driven by a carriage motor (not shown) so that the recording paper 2 or the wiping blade 151 and the cap 6 are moved on the guide shaft. Reciprocate while facing. The recording paper 2 is guided by the platen 1. First and second guide shafts 185, 186
Is held parallel to the platen 1 and the drive lever support shaft 127 by holding means (not shown). A flexible cable 187 is attached to the carriage 4. The flexible cable 187 is connected to a print driving circuit via a connection terminal 187b in which the electrode of the inkjet head 5 is attached to the substrate 101.

Next, the recovery operation in this embodiment will be described with reference to FIGS. 1, 2 and 5. FIG. FIG. 5 is a timing chart showing the recovery operation. When the stepping motor 107 rotates forward and the first drive gear rotates clockwise as indicated by the solid arrow in FIG. 1, the drive shaft 115 rotates integrally with the one-way clutch 117 in the clockwise direction and the one-way clutch 117 Fixed first cam 119
And the second cam 121 is rotated and the first and second cam rollers 133, 13
5, the blade drive lever 129 and the cap drive lever 131 are rotated. If the radius of the first cam 119 (the distance from the cam rotation axis to the contact point with the roller) decreases, the blade belt 153 moves toward the ink jet head 5, and if the radius of the cam increases, it moves in the opposite direction. . The relationship between the change in the moving radius of the second cam 121 and the moving direction of the cap 6 is exactly the same.

In this manner, the positions of the blade belt 153 and the cap 6 are determined by the moving diameters of the corresponding cams. The moving diameters of the first cam 119 and the second cam 121 are determined by the rotation of the one-way clutch 117 with respect to the reference. Determined by the angle. Then, at the rotation angle at which the moving radius of the first cam becomes maximum, the moving radius of the second cam becomes minimum,
The moving radius of the second cam becomes maximum at the rotation angle at which the moving radius of the cam becomes minimum, and the moving radius of the second cam takes an intermediate value at the rotation angle at which the moving radius of the first cam becomes an intermediate value. A cam is formed and arranged. The rotation angle of the one-way clutch 117 can be set to a desired rotation angle by detecting a signal with respect to the reference angle by the photointerrupter 126 and applying a necessary number of drive pulses to rotate the stepping motor 107 forward.

Now, with the carriage 4 facing the recording paper 2, the stepping motor 107 is rotated in the forward direction so that the one-way clutch 117 is set at an angle at which the moving diameters of the first cam 119 and the second cam 121 are both intermediate values. When the rotation angle has reached, the rotation is stopped and the rotation angle is maintained. At this time, the wiping blade 151 and the cap 6 are retracted to an intermediate position apart from a position corresponding to the nozzle surface 5b of the inkjet head 5. Next, the carriage motor is driven to move the carriage 4 to stop the nozzle surface 5b at a position facing the cap 6, and then a predetermined drive pulse is further applied to the stepping motor to perform normal rotation so that the radius of the first cam 119 is changed. Is stopped when the rotation angle of the one-way clutch 117 reaches the angle at which the moving radius of the second cam 121 becomes the minimum and the moving radius of the second cam 121 becomes the minimum. At this time, the cap 6 advances most and presses the nozzle surface 5b,
On the other hand, the wiping blade 151 is located farthest away from the position corresponding to the nozzle surface. In this state, when the stepping motor 107 rotates in the reverse direction, the one-way clutch 1
17 is stopped, and only the drive shaft 115 rotates counterclockwise.

Thus, the second drive shaft 159 is rotated clockwise by the third drive gear 125 and the third driven gear 161 in a state where the cap 6 is in pressure contact with the nozzle surface 5b. Pump Drive Gear 167 Directly Connected to Drive Shaft and Pump Driven Gear 169 Meshing Therewith
By rotating the pump gear body 169 counterclockwise by c, the pump 11 communicating with the cap 6 performs the suction operation as described above, and performs the capping operation. At the same time, the wiping blade 151 is finally driven via the planetary gear 165 as will be described later, but idles and the actual wiping operation is not performed. After the capping operation is completed, a predetermined drive pulse is applied to the stepping motor 107 to perform normal rotation, and the rotation angle of the one-way clutch 117 reaches the angle at which the moving diameters of the first cam 119 and the second cam 121 are both intermediate values again. In this state, the rotation angle is maintained. At this time, the wiping blade 151 and the cap 6 are retracted to an intermediate position as described above.

Next, the carriage motor is driven to move the carriage 4 to stop the nozzle surface 5b at a position facing the blade cover 143. After that, a predetermined drive pulse is further applied to the stepping motor 107 to perform normal rotation to perform the first rotation. Cam 11
When the rotation angle of the one-way clutch 117 reaches an angle at which the moving radius of the second cam 121 becomes the minimum and the moving radius of the second cam 121 becomes the maximum, the rotation is stopped and the rotation angle is maintained. At this time, the blade cover 143 is in the most advanced state, and the wiping blade 151 made of a soft elastic material is in a state of being pressed against the nozzle surface 5b and flexing and rubbing it. On the other hand cap 6
Is located farthest away from the position corresponding to the nozzle surface 5b. When the stepping motor 107 is rotated reversely in this state, only the drive shaft 115 rotates counterclockwise while the one-way clutch 117 remains stopped.

Thus, the second drive shaft 159 is rotated clockwise by the third drive gear 125 and the third driven gear 161 in a state where the position of the blade cover 143 does not change. The planetary gear 165 meshing with the driven gear 161 also turns clockwise around it, and meshes with the idle gear 157 attached to the blade cover 143. As a result, the rotation of the second drive shaft is controlled by the third driven gear 1.
61, the planetary gear 165, the idle gear 157, and the belt drive gear 155 are transmitted to the first belt roller drive shaft 145b to rotate the first belt roller 145 in the counterclockwise direction and rotate the blade belt 153 in the counterclockwise direction. The wiping operation is performed by rubbing the nozzle surface 5b from top to bottom by rotating the wiping blade 151. After the wiping operation is completed, a predetermined drive pulse is applied to the stepping motor 107 to further rotate forward and rotate the rotation angle of the one-way clutch 117 by 360 degrees from the initially set angle.
After moving the carriage 51 and the cap 6 to the same intermediate position as the beginning, the carriage motor is driven to move the carriage 4 to a position facing the recording paper 2 and the recovery operation is completed.

As described above, according to the present embodiment, the stepping motor 107 is stopped when the carriage 4 is stopped.
By performing the one-way rotation, wiping and capping of the nozzle surface 5b of the inkjet head are performed.
The carriage stroke for the recovery operation is shortened, and the recovery operation is performed smoothly and at high speed without generating noise.
Further, by using the one-way clutch 117 to selectively use the common stepping motor 107 to perform forward and backward movements of the wiping blade and the cap by performing forward rotation, and to perform wiping and suction operations by performing reverse rotation, the structure can be simplified and the volume efficiency can be improved.

(Embodiment 2) FIG. 6 is a plan view showing a second embodiment of the present invention, and FIGS. 7 and 8 are perspective views showing the operation of this embodiment. This embodiment will be described with reference to FIGS. 203 is the second side plate 10
5 is a third side plate mounted on the substrate 101 on the opposite side of the first side plate 103 in parallel with 5. In the present embodiment, the structure on the side opposite to the third side plate with respect to the second side plate 105 is the same as that of the first embodiment, and the description is omitted. Second drive shaft 1
59 is rotatably supported by the second side plate 105 and the third side plate 203. A vertical groove 159b is provided in a portion between the second side plate and the third side plate of the second drive shaft, and the sliding gear 205 is mounted so that the sliding gear 205 can slide in the axial direction but cannot slide. Switching sliding member 207
Is slidably held by a third guide shaft 217 held by the second and third side plates on the side of the second drive shaft and the first guide shaft 185 in parallel with the second drive shaft. The switching sliding member 207 includes two arms 207c sandwiching a slit portion 207b at a portion corresponding to the second drive shaft 159.
Can move in the axial direction while sandwiching the sliding gear 205 while loosely engaging with the second drive shaft 159.

A hexagonal prism-shaped positioning pin 209 is fixed upright to the end of the switching sliding member 207 near the first guide shaft 185. The positioning pin 209 is stabilized at one of a position close to the second side plate 105 and a position close to the third side plate 203 by a plate-shaped positioning spring 211 attached to the third side plate 203. A switching blade 213 made of a plate-like elastic member protrudes below the carriage 4 at a position where the switching blade 213 interferes with the positioning pin 209. When the carriage 4 moves from the printing position to a position facing the cap 6 or the blade belt 153 for the recovery operation, the switching blade 213 is moved to the third side plate 203.
Is driven until the positioning pin 209 is stopped by the second side plate 105 by removing the restraint of the positioning spring 211, and then the positioning pin 209 is rubbed and passed. Thereafter, at the time of the recovery operation, the switching sliding member 20 is used.
7 is restrained by the positioning spring 211 in the vicinity of the second side plate even if it is subjected to disturbance.

At this time, as shown in FIG. 7, the sliding gear 205 is guided by the switching sliding member 207, and is driven by the pump driving gear body 169 disposed near the second side plate 105. Meshes with the gear 169c,
With the rotation of the second drive shaft 159, the pump driving gear body 16
9 is rotated to drive the pump 11 in the same manner as in the first embodiment. The third side plate 203 and a fourth side plate (not shown) rotatably hold the drive shaft 1b of the platen 1. One end of the drive shaft 1b of the platen penetrates through the third side plate 203 and protrudes inward. A platen drive gear 215 that can mesh with the sliding gear 205 is fixed to the protruding portion near the third side plate 203. When the carriage 4 returns from the recovery operation position to the printing position, the switching blade 213 attached to the carriage 4 drives the positioning pins 209 in the direction of the third side plate 203 as shown in FIG. Eliminate the third side plate 2
03 until it stops, and then passes by rubbing the positioning pin 209. Thereafter, even if the switching sliding member 207 receives a disturbance, the switching spring
In the vicinity of the side plate.

At this time, the sliding gear 205 is guided by the switching sliding member 207 so that the third side plate 203
Meshes with a platen drive gear 215 disposed in the vicinity of
The platen 1 rotates with the rotation of the second drive shaft 159 to drive the recording paper. Here, when the stepping motor 107 rotates forward, the platen 1 rotates in the reverse direction and the recording sheet 2 is returned. When the stepping motor 107 rotates in the reverse direction, the platen 1 rotates forward and the recording sheet is fed. As described above, in the present embodiment, the recovery operation similar to that of the first embodiment is performed by using the stepping motor 107 which is a common driving source by adding the switching means for the recovery operation and the platen driving operation. During printing, the platen can be freely rotated forward and backward.

[0028]

As described above, according to the present invention, (1) the wiping and capping of the nozzle surface of the ink jet head are performed by the unidirectional rotation of the stepping motor in a state where the carriage is stopped. , The recovery stroke can be performed smoothly and at high speed without generating noise. (2) The structure of the recovery device can be simplified by using the one-way clutch 117 to selectively use the common stepping motor 107 to perform forward and backward movements of the wiping blade and the cap by forward rotation and perform wiping and suction operations by reverse rotation. (3) The simple switching means can perform the recovery operation of the nozzle surface and the rotation operation of the platen for moving the recording paper using a single step motor as a common driving source, thereby simplifying the printer device. And the volumetric efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a first embodiment of the present invention.

FIG. 3 is a perspective view showing a part of the first embodiment of the present invention.

FIG. 4 is a perspective view showing the operation of the first embodiment of the present invention.

FIG. 5 is a time chart showing the operation of the first embodiment of the present invention.

FIG. 6 is a plan view showing a second embodiment of the present invention.

FIG. 7 is a perspective view showing a switching operation according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing another switching operation according to the second embodiment of the present invention.

FIGS. 9A and 9B are plan views showing a conventional recovery device in an ink jet printer, wherein FIG. 9A shows a state in which a nozzle surface is separated from a cap, and FIG. 9B shows a state in which the cap is pressed against the nozzle surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Platen 1b Platen rotation axis 2 Recording paper 3 Carriage shaft 4 Carriage 5 Ink jet head 5b Nozzle surface 6 Cap 7 Second cap holder 7b Arm part of second cap holder 8 Wiping blade 8b Blade holder 9 First cap holder 9b Slit part of first cap holder 10 Guide rail 11 Pump 12 Holder shaft 101 Substrate 103 First side plate 105 Second side plate 107 Stepping motor 107b Motor shaft 109 First drive gear 111 Reduction gear 111b First driven gear 111c 2nd drive gear 113 2nd driven gear 115 drive shaft 117 one-way clutch 119 1st cam 121 2nd cam 123 photo interrupter shielding plate 124 photo interrupt Holding member 125 Third drive gear 126 Photointerrupter 127 Drive lever support shaft 129 Blade drive lever 129b Blade drive lever guide hole 131 Cap drive lever 131b Cap drive lever guide hole 133 First cam roller 135 Second cam roller 137 First Coil spring 139 Second coil spring 141 Spring fixing member 143 Blade cover 143b Blade cover opening 145 First belt roller 145b First belt roller rotation shaft 147 Second belt roller 153 Blade belt 155 Belt drive gear 157 Play gear 157b Play Gear shaft 159 Second drive shaft 161 Third driven gear 163 Moving arm 163b Planetary gear shaft 165 Planetary gear 167 Pump drive gear 168 Pump arm 169 Pump gear 169b Pump gear shaft 169c Pump driven gear 169d Eccentric shaft holder 169f Eccentric shaft 185 First guide shaft 186 Second guide shaft 187 Flexible cable 187b Connection terminal 203 Third side plate 205 Sliding gear 207 Switching sliding member 207b Slit 207c Arm 209 Positioning pin 211 Positioning spring 215 Platen drive gear 217 Third guide shaft

Claims (2)

(57) [Claims] 1. A recovery device for an ink jet printer having an ink jet head moving relative to recording paper, a cap for capping the ink jet head, and a wiping blade for wiping the ink jet head. and it is movable to the respective position corresponding to the wiping blade, preparative first cam and the second cam
A one-way clutch is provided, and the wiping
The blade is connected to the blade drive lever via the first cam.
The cap is connected to the cap via the second cam.
The drive lever, respectively in contact with the ink jet head is held so that it can leave, the wiping operation of the wiping blade is carried by the rotation of the belt means attached to said blade drive lever, the forward rotation of the motor which is a drive source of the recovery device The first cam and the second
Rotate the cam to move the cap drive lever and
The cap drive lever and the blade drive are driven by reversing the motor.
A recovery device for an ink jet printer, wherein a wiping operation is performed by driving the belt means by a train of wheels that transmits rotation of a drive shaft while a lever is stopped, and a suction pump is driven to suck a cap. 2. The recovery device for an ink jet printer according to claim 1, wherein said recovery device comprises a switching device, said switching device having a sliding gear and a guide member thereof, and said sliding gear being moved through said guide member. When the inkjet head is at the recovery operation position, it is engaged with a gear for recovery operation, and when the inkjet head is at the printing position, it is engaged with a gear for driving a platen. A recovery device for an ink jet head, wherein rotation of a gear is performed by a common motor which is a drive source of the recovery device.