JP2004230842A - Recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording device which can drive a mechanism for maintaining the recording characteristics of a recording head, by a compact and simple constitution. <P>SOLUTION: A suction pump part, a cap part and a wiper part are set at a recovery part for maintaining the recording performance of the recording head. The suction pump part operates via a spring clutch mechanism while an LF motor of a transfer part for transferring a recording sheet is used as a drive source, and the cap part and the wiper part operate with an AP motor being used as a drive source within a rotation dead zone set to a paper feed part for feeding the recording sheet to the transfer part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording apparatus that records an image including characters and the like on a recording medium such as a recording sheet to be conveyed using a recording head, and more particularly, for maintaining the recording performance of the recording head. The present invention relates to a recording apparatus that also serves as a drive source for transporting a recording medium as a drive source for a recovery operation.
[0002]
[Prior art]
In recent years, with the spread of personal computers, word processors, facsimiles, and the like in offices and the like, various recording devices have been provided as information output devices for these devices. Among them, a recording device such as an ink jet printer (ink jet recording device) that discharges ink onto a recording medium to record an image including characters and the like has an excellent balance of image quality, printing speed, device size, price, and the like. Since recording images can be easily colored, they are widely used and are used as recording devices in various fields.
[0003]
FIG. 40 is a perspective view illustrating a configuration of a conventional inkjet printer.
[0004]
The recording device is generally realized by a combination of a plurality of classifiable mechanisms. In the ink jet recording apparatus of FIG. 40, a mechanism for feeding and transporting the recording medium is an automatic mechanism for storing a plurality of recording media such as recording sheets and separating and feeding them one by one. It comprises a paper feed unit 100 and a transport unit 200 which is located downstream of the paper feed direction of the recording medium and transports the recording medium in synchronization with image recording. The automatic paper feeding unit 100 includes a paper feed roller and the like for separating and feeding the uppermost recording medium by pressing and rotating the top of the stacked recording media. In addition, the transport unit 200 includes an LF roller 201 that rotates by obtaining a driving force from a driving source, a pinch roller 202 that is driven between the LF roller 201 with the recording medium interposed therebetween, and the like.
[0005]
The recording unit 400 includes a carriage 401 that reciprocates along a guide member in a direction orthogonal to the transport direction of the recording medium, and the carriage 401 has an inkjet recording head 500 that faces the recording medium in a non-contact manner. Is done. The recording head 500 discharges ink from discharge ports based on image data.
[0006]
The recovery unit 600 maintains a stable ink ejection function of the recording head 500 by removing thickened ink, dust, and the like attached to the ejection openings of the recording head 500. In the recovery unit 600, in order to prevent drying and evaporation of ink from the ejection ports of the recording head 500, the surface of the recording head 500 where the ejection ports are formed (hereinafter, referred to as “ejection port surface”) is subjected to non-recording operation. A capping portion 601 having a cap for occasionally covering, a wiping mechanism for removing ink attached to the ejection opening surface of the recording head 500 using a blade or the like, and an ejection opening of the recording head 500 via the cap of the capping portion 601. And a suction mechanism for suctioning the thickened ink or the like from the vicinity thereof. This suction mechanism sucks and discharges ink that does not contribute to image recording from the discharge port or the like into the cap by introducing a negative pressure from the pump into the cap covering the discharge port surface.
[0007]
Conventionally, as described in Patent Document 1 and Patent Document 2, such a recording apparatus includes a plurality of driving apparatuses driven by a second driving source different from a driving source of a carriage on which a recording head is mounted. There is known a configuration in which a driving mechanism is provided, and a driving force from a second driving source is switched and output to the plurality of driving mechanisms according to a moving position of a carriage. For example, in a configuration in which the recovery mechanism and the paper feed mechanism are driven by the second drive source, the drive output from the second drive source to these mechanisms is switched according to the moving position of the carriage, Is switched according to the moving position of the carriage. Patent Document 3 discloses a configuration in which a cap in a recovery unit is slid and opened / closed in accordance with movement of a carriage.
[0008]
Patent Document 4 discloses a configuration in which a wiping operation, a suction operation, and a paper feeding operation in a recovery unit are performed by a third driving source different from a driving source of a carriage and a driving source of a transport mechanism of a recording medium. It has been disclosed. Further, Patent Document 4 discloses that a wiping operation and a suction operation in a recovery unit are selectively executed according to a position of a carriage on which a recording head is mounted and a rotation direction and a rotation amount of a third drive source. It is disclosed that one of the paper feeding mechanisms is selectively driven.
[0009]
[Patent Document 1]
JP 2001-058731 A
[0010]
[Patent Document 2]
JP 2001-058742 A
[0011]
[Patent Document 3]
JP 2000-135794 A
[0012]
[Patent Document 4]
JP-A-11-138782
[0013]
[Problems to be solved by the invention]
However, the configurations disclosed in Patent Literatures 1 to 4 essentially switch the output destination of the driving force in accordance with the operation of the carriage and the like, and thus have the following problems.
[0014]
In the configurations disclosed in Patent Documents 1 and 2, a relatively complicated mechanism is required to switch the output destination of the driving force, and extra time is required for the movement of the carriage to the switching operation position and the switching operation. Take it. In addition, since the switching operation position needs to be provided outside the normal movement range of the carriage, there arises a problem that the size of the apparatus main body increases particularly in the movement direction of the carriage. These problems also apply to the configuration disclosed in Patent Document 3.
[0015]
Further, in Patent Document 4, a complicated mechanism is required to switch the output destination of the driving force of the third driving source for each of the wiping operation, the suction operation, and the sheet feeding operation, and furthermore, the mechanism depends on the movement position of the carriage. The problem that extra time is required for the switching operation and that the miniaturization, simplification and cost reduction of the device are impaired still remain.
[0016]
An object of the present invention is to provide a recording apparatus capable of driving a mechanism for maintaining the recording performance of a recording head with a small and simple configuration.
[0017]
[Means for Solving the Problems]
The recording apparatus according to the present invention is a recording apparatus for recording an image on a recording medium using a recording head, wherein a conveying unit that conveys the recording medium by a driving force of a first driving source, and a driving force of a second driving source. Feeding means for feeding the recording medium to the transport means, and recovery means for performing a recovery operation for maintaining the printing performance of the print head by a first drive mechanism and a second drive mechanism. The first driving mechanism uses the first driving source as a driving source, and according to a driving force generation direction of the first driving source via a clutch mechanism that transmits only one-directional rotation of the first driving source. Operating, having a dead zone that does not transmit a predetermined amount of rotational force when the rotational direction of the second drive source changes to the feeding means, and wherein the second drive mechanism uses the second drive source as a drive source. And within the dead zone of the feeding means. There are, characterized in that it operates in accordance with the generating direction of the driving force of the second driving source.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
FIG. 1 is a perspective view illustrating the entire recording apparatus of the present embodiment excluding an exterior. The recording operation mechanism in the recording apparatus of the present embodiment is roughly classified into an automatic paper feeding unit 100 that automatically feeds a recording sheet as a recording medium to a conveyance unit 200 in the apparatus main body, and an automatic paper feeding unit 100. A transport unit 200 that guides the recording sheets sent one by one to a desired recording position and discharges the recording sheets from the recording position; a discharge unit 300 located downstream of the transport unit 200 in the transport direction; The recording unit 400 performs desired recording on the recording sheet conveyed to the recording unit 400, and a recovery unit 600 that performs a recovery process on the recording unit 400 and the like. These mechanisms are substantially integrally formed around the chassis 701. The recording sheet conveyance direction (sub-scanning direction) is the direction of arrow A, and the reciprocating operation direction (main scanning direction) of the recording unit 400 is the direction of arrow B.
[0020]
Next, the configuration of each mechanism will be described separately.
(Automatic paper feed unit 100)
FIG. 2 is a perspective view showing only the components of the automatic sheet feeding unit 100.
[0021]
The automatic sheet feeding unit 100 according to the present embodiment sends out the recording sheets stacked at an angle of about 30 ° to 60 ° with respect to a horizontal plane in a horizontal direction, while maintaining a substantially horizontal posture of the recording sheets. It is fed to the transport unit 200 from a feed port (not shown).
[0022]
The automatic paper feed unit 100 includes a paper feed roller 101, a movable side guide 102, a pressure plate 103, a separation sheet 104, and the like. The pressure plate 103 supporting the recording sheet is attached to the chassis 701 (see FIG. 1) so as to form an angle of about 30 ° to 60 ° with respect to a horizontal plane. At both ends of the pressure plate 103, a sheet guide portion 106 and a movable side guide 102 projecting to guide both ends of the recording sheet are arranged. The movable side guide 102 is horizontally movable along the pressure plate 103 so as to correspond to the horizontal size (width) of the recording sheet.
[0023]
A feed roller shaft 108 is rotatably supported in front of the pressure plate 103. The feed roller shaft 108 is rotated by an AP motor 107 via an AP gear a116, an AP gear b117, and a feed roller gear 115 as a plurality of transmission gears. It is turned. Two paper feed rollers 101 having a D-shaped cross section are fixed to the paper feed roller shaft 108. Then, the recording sheets stacked on the pressure plate 103 are fed one by one from the top one by rotating the paper feed roller 101 in conjunction with the rotation of the AP motor 107. That is, the uppermost sheet located at the highest position among the stacked recording sheets is sequentially separated one by one by a frictional separation action when it passes over the separation sheet 104, and is sent out in the conveyance direction of arrow A to be conveyed. It is fed to the unit 200. The pressure plate 103 is elastically supported by the chassis 701 by two pressure plate springs 105 at both ends interposed between the pressure plate 103 and the chassis 701 (see FIG. 1). Therefore, the number of recording sheets can be kept optimally within the range of the possible number.
[0024]
3 and 4 are side views in which only the components of the automatic paper feed unit 100 and the transport unit 200 are extracted.
[0025]
A PE lever 110 extending from the PE sensor switch 109 is arranged in the conveyance path of the recording sheet P from the automatic paper feeding unit 100 to the conveyance unit 200. The recording sheets P separated and conveyed one by one from the automatic sheet feeding unit 100 pass through a passage between the upper conveyance guide 210 and the lower conveyance guide 215. When one end of the recording sheet P operates the PE lever 110, the PE sensor switch 109 detects the operation of the PE lever 110, and detects that the recording sheet P has entered the transport path. Then, after the entry of the recording sheet P into the transport path is detected, the recording sheet P is fed by the feed roller 101 to the downstream side in the transport direction by a predetermined distance. The feeding operation by the paper feed roller 101 is performed by the leading end of the recording sheet P contacting the nip portion N between the LF roller 201 and the pinch roller 202 in the stopped state in the conveying section 200, and the recording sheet P is conveyed. The operation is reliably performed until the sheet can be conveyed by the unit 200.
[0026]
FIG. 5 is a perspective view in which only parts of the automatic sheet feeding unit 100 are extracted.
[0027]
After the feeding operation by the automatic sheet feeding unit 100 is completed, the flat portion X of the sheet feeding roller 101 having a D-shaped cross section is substantially parallel to the pressure plate 103, and the pressure plate 103 is provided on the sheet feeding roller shaft 108. It is separated from the paper feed roller 101 by the two pressure plate cams 111. An ASF sensor cam 112 is provided on the feed roller shaft 108, and the direction of the flat portion X of the feed roller 101 having a D-shaped cross section can be controlled by detecting the phase of the ASF sensor cam 113 by the ASF sensor switch 113. It depends.
[0028]
(Transport section 200)
6 and 7 are perspective views in which parts of the transport unit 200 are extracted.
[0029]
The transport unit 200 includes an LF roller 201, a pinch roller 202, a platen 203, and the like. The LF roller 201 is rotatably supported by a chassis 701 (see FIG. 1) or the like via an LF bearing 204, and an LF gear 205 is mounted on one end thereof. The LF gear 205 is connected to an LF drive gear 207 provided on a drive shaft of the LF motor 206 via an LF two-stage gear 208, and is rotated by a driving force of the motor 206. The pinch roller 202 is rotatably mounted on the pinch roller holder 209. The pinch roller holder 209 extends upward from the conveyance guide 210 (see FIG. 4) fixed to the flat portion of the chassis 701 (see FIG. 1), and the pinch roller 202 is moved by the urging force of the pinch roller spring 211. It comes into pressure contact with the LF roller 201. When the LF roller 201 rotates, and the pinch roller 202 rotates following the rotation, the recording sheet fed from the automatic sheet feeding unit 100 is sandwiched between the rollers 201 and 202 as described above. It is transported forward along the upper surface of the platen 203.
[0030]
After the feeding operation by the paper feeding roller 101 of the automatic paper feeding unit 100 progresses and the leading end of the recording sheet P reaches the nip N between the LF roller 201 and the pinch roller 202, The LF roller 201 rotates via the LF two-stage gear 208 and the LF gear 205 by the driving force of the LF motor 206. Thus, the recording sheet P is conveyed to a recording start position on the platen 203. The recording start position differs depending on the recorded contents.
[0031]
The paper feed roller 101 may rotate simultaneously with the LF roller 201 by a margin of the feed amount. In this case, the recording sheet P is conveyed to the downstream side in the conveying direction by the cooperation of the sheet feeding roller 101 and the LF roller 201 for a predetermined time. Then, after the rotation of the paper feed roller 101 is completed, the recording sheet P is conveyed to the recording start position by rotating the LF roller 201 forward or backward as necessary. Then, after the image is recorded by the recording unit 400 described later, the recording sheet P is conveyed by a predetermined amount by the rotation of the LF roller 201, and after the conveyance operation is completed, the image is recorded again by the recording unit 400 described later. By repeating such an image recording operation and the operation of transporting the recording sheet P by a predetermined amount, an image is recorded on the recording sheet P located on the platen 203.
[0032]
(Ejection unit 300)
8 to 10 are perspective views in which parts of the discharge unit 300 and the transport unit 200 are extracted.
[0033]
The discharge unit 300 includes a paper discharge roller 301, a spur 304, and the like. A discharge pulley 303 attached to the discharge roller 301 transmits the driving force of the LF motor 206 to the discharge roller 301 via a discharge belt 302. The spur 304 is held by a spur holder 306 mounted on a guide rail 305. The spur 304 is pressed by the discharge roller 301 by the urging force of the spur spring 307 and rotates following the rotation of the discharge roller 301 to convey the recording sheet P while nipping the recording sheet P between the spur 304 and the discharge roller 301. I do.
[0034]
FIG. 11 is a side view in which the components of the automatic paper feed unit 100, the transport unit 200, and the discharge unit 300 are extracted.
[0035]
The recording of the image on the recording sheet P sent from the automatic sheet feeding unit 100 to the conveying unit 200 and further to the discharge unit 300 is completed, and the trailing edge of the recording sheet P is moved from between the LF roller 201 and the pinch roller 202. Is pulled out, the recording sheet P is conveyed only by the discharge roller 301 and the spur 304, and the discharge of the recording sheet P is completed.
[0036]
(Recording unit 400)
FIG. 12 is a perspective view in which only the components of the recording unit 400 are extracted.
[0037]
The recording unit 400 includes a carriage 401 movably supported by a carriage shaft 402, and a recording head cartridge 501 is detachably mounted on the carriage 401. The print head cartridge 501 according to the present embodiment includes an ink jet print head capable of discharging ink from discharge ports in accordance with print information, and an ink tank storing ink to be supplied to the print head. It is detachable with respect to.
[0038]
As the ink jet recording head, a recording head that discharges ink from discharge ports using an electrothermal transducer (heater), a piezo element, or the like can be employed. When an electrothermal converter is used, the ink can be boiled by the heat generated by the electrothermal converter, and the ink droplets can be ejected from the ejection port using the bubbling energy.
[0039]
The carriage 401 is provided with a head connector (not shown) that is electrically connected to a carriage FPC (flexible substrate) 404. By fitting and electrically connecting the head connector and an external input signal terminal provided on the printhead cartridge 501, various kinds of information for printing and supply of power to the printhead are performed. . The carriage FPC 404 is drawn out of the carriage 401 and is electrically connected to a main board (not shown) provided in the apparatus main body. The carriage FPC 404 arranged on the carriage 401 is further provided with an encoder sensor 407.
[0040]
FIG. 13 is a perspective view of the carriage 401 and components of a scanning unit for scanning the carriage 401.
[0041]
An encoder scale 408 is stretched between both side surfaces of the chassis 701 in parallel with the guide shaft 402. When the information on the encoder scale 408 is detected by the encoder sensor 407 on the carriage 401, the moving position of the carriage 401, the scanning speed, and the like can be detected. In the case of the present embodiment, the encoder sensor 407 is an optical transmission type sensor, and the encoder scale 408 blocks detection light from the encoder sensor 407 on a resin film such as polyester by a method such as photoengraving. The light-shielding portion and the light-transmitting portion that transmits the detection light are alternately printed at a predetermined pitch. The position of the carriage 401 moving along the guide shaft 402 is detected by abutting the carriage 401 against one side plate of the chassis 701 located at the end of the carriage 401 on the movement track, and using the abutted position as a reference. . That is, after the carriage 401 abuts against one of the side plates of the chassis 701, the number of patterns of the encoder scale 408 (the pattern of forming the light shielding portion and the light transmitting portion) detected by the encoder sensor 407 as the carriage 401 moves is determined. By counting, the movement position of the carriage can be detected at any time.
[0042]
The carriage 401 is movably guided by a guide shaft 402 and a rail portion provided on a guide rail 305, which are installed between both side surfaces of the chassis 701 in parallel with each other. Accordingly, the carriage 401 moves in a main scanning direction orthogonal to the transport direction of the recording medium (recording medium including a recordable flexible sheet such as a plastic sheet) and parallel to the recording surface of the recording medium. It is freely supported.
[0043]
FIG. 14 is a perspective view in which components of a driving unit of the carriage 401 are extracted.
[0044]
A carriage belt 412 is stretched between the idler pulley 409 and the CR motor pulley 411 substantially in parallel with the guide shaft 402, and the carriage belt 412 is connected to the carriage 401. Therefore, the CR motor pulley 411 is rotated by the driving force of the CR motor 410 and the carriage belt 412 moves in the forward or backward direction, so that the carriage 401 reciprocates along the guide shaft 402. The CR motor pulley 411 is held at a fixed position by the chassis 701. On the other hand, the idler pulley 409 is rotatably held by a pulley holder 415, and the pulley holder 415 is slidably held in a direction parallel to the guide shaft 402 with respect to the chassis 701. The idler pulley 409 is urged by a tension spring 413 in a direction away from the CR motor pulley 411. Appropriate tension is always applied to the carriage belt 412 bridged between the pulleys 409 and 411, and a favorable erection state without slack is maintained.
[0045]
(Recovery unit 600)
FIG. 15 is a perspective view of the entire recovery unit 600 that performs a recovery process on the recording head cartridge 501.
[0046]
The recovery unit 600 according to the present embodiment includes a cleaning unit for removing foreign matter attached to the periphery of the ejection port surface of the recording head in the recording head cartridge 501, and a flow of ink from the ink tank to the ejection port surface of the recording head. In order to normalize the road, there is provided a recovery means for removing the fixation of foreign matter and the like, removing the mixed air, and the like. The recovery section 600 is roughly composed of a cap section, a wiper section, and a suction pump section described later. As a driving source for driving the cap unit and the wiper unit, an AP motor 107 (see FIG. 27) which is a driving source for the automatic paper feeding unit 100 is used. As a driving source for driving the suction pump unit, An LF motor 206 (see FIG. 6), which is a drive source of the transport unit 200, is used.
[0047]
FIG. 16 is a perspective view of the cap unit and its operation mechanism.
[0048]
The cap 601 is made of a rubber material, and is attached to a surface of the rigid cap holder 603. The cap holder 603 is attached to the PG base 604 so as to be able to move up and down along the guide groove in a vertical direction. Being energized. When lowering the cap holder 603, the cap lever 606 pushes down the cap holder 603. The cap lever 606 is attached to the PG base 604 so as to be rotatable about the axis, and one end of the cap lever 606 moves following the curved surface of the rotating cap cam 607. Therefore, the vertical position of the cap 601 is determined according to the rotational position of the cap cam 607 via the cap lever 606.
[0049]
The cap 601 in the cap portion has a shape in which the suction cap 601A and the protection cap 601B are integrated. To protect the ejection openings of the recording head when the power of the recording apparatus is turned off, the suction cap 601A is capped so as to cover a color ink ejection nozzle (hereinafter, referred to as a "color nozzle"), and the protection cap 601B is protected. Cover the nozzles for discharging black ink (hereinafter, referred to as “Bk nozzles”). The cap absorber 608 provided in the suction cap 601A faces the discharge port surface of the recording head at a predetermined interval when the suction cap 601A is capped. The suction cap 601A can perform a recovery process (suction recovery) for suctioning and discharging ink not contributing to image printing from the color nozzle by introducing a negative pressure during capping of the color nozzle. When performing suction recovery on the Bk nozzle, the stop position of the carriage 401 is changed, and the Bk nozzle is capped by the suction cap 601A.
[0050]
FIG. 17 is a perspective view of the wiper unit and its operation mechanism.
[0051]
The wiper 602 in the wiper portion is made of a flexible material such as rubber, and is erected on the blade holder 613 so that its edge protrudes upward. The wiper lead screw 614 is inserted into one end of the blade holder 613, and the other end is guided by a blade rail 615 arranged in parallel with the ejection port surface of the recording head. A protrusion formed on the blade holder 613 is fitted in a groove formed in the wiper lead screw 614. Therefore, the blade holder 613 moves in the WF and WR directions along the wiper lead screw 614 and the blade rail 615 in accordance with the rotation direction of the wiper lead screw 614.
[0052]
A blade screw gear 617 is attached to one end of the wiper lead screw 614, and a driving force is transmitted to the blade screw gear 617 from a cap cam gear 619 via a blade idler gear 618. The cap cam gear 619 is attached to the PG base 604 so as to rotate integrally with the above-described cap cam 607 (see FIG. 16). A gear portion for transmitting the drive from the cap cam gear 619 to the wiper 602 limits the operating range of the wiper 602 by a notch 619 a provided at a position related to the operation of the cap cam 607. The wiper 602 comes into contact with the wiper cleaner 616 when the wiper 602 moves to the maximum in the WF direction.
[0053]
FIG. 18 is a perspective view showing the wiper cleaner 616 attached to the guide rail 305.
[0054]
The wiper cleaner 616 is rotatably attached to the guide rail 305 and is pressed downward by a wiper cleaner spring 650. The spring force of the wiper cleaner spring 650 is set to be extremely weak. The wiper cleaner 616 is installed in parallel with the wiping edge of the wiper 602, and forms a rib supported by the wiper cleaner spring 650 so as to be tiltable in only one rotation direction.
[0055]
FIG. 19 is a side view of the wiper unit and the recording head cartridge 501.
[0056]
The wiper 602 performs cleaning by wiping foreign substances around the ejection port surface 512 by moving in parallel with the ejection port surface 512 of the recording head in the recording head cartridge 501.
[0057]
In the present embodiment, the cleaning is performed when the wiper 602 moves in the WF direction (from the rear to the front), and the wiper 602 wipes the discharge port surface 512 of the recording head cartridge 501 and the discharge port is moved. After disengaging from the surface 512, the wiper 602 reaches the position of the wiper cleaner 616. After the wiper 602 moves from the rear to the front and wipes the discharge port surface 512, the tip of the wiper 602 crosses over the rib ridge line 616a of the wiper cleaner 616, so that the ink and foreign matter attached to the wiper 602 are removed. When the wiper 602 moves from the front to the rear, the rib ridge line 616a of the wiper cleaner 616 is pushed up by the wiper 602 and lifted, and the wiper 602 moves with a small load without bending, so that the wiper 602 moves rearward from the wiper 602. Unnecessary scattering of ink is prevented.
[0058]
FIG. 20 is a cam chart showing the operation of the wiper 602 and the operation of the cap 601. FIG. 21 is a perspective view showing the positions of the wiper 602 and the cap 601 at the CU position of the cam chart of FIG. 20, and FIG. 22 is a perspective view showing the positions of the wiper 602 and the cap 601 at the CD position of the cam chart of FIG. FIG. 23 is a perspective view showing the positions of the wiper 602 and the cap 601 at the WF position of the cam chart in FIG.
[0059]
The cap cam gear 619 moves in the rotation direction (CCW, CW) of the AP motor 107 (see FIG. 2) in a range starting from the end position WF of wiping by the wiper 602 and ending at the end position CU of capping by the cap 601. It only reciprocates accordingly. The cap 601 moves up and down by the rotation of the cap cam gear 619, and performs capping by moving upward. When the cap cam gear 619 rotates from the wiping end position WF toward the capping completion position CU, the wiper 602 moves from the front to the back on the cap 601 located below, and the wiper 602 moves to the vicinity of the position CD. After that, the cap 601 moves upward and stops at the position CU where the ejection port surface 512 of the recording head is capped. Conversely, when the cap cam gear 619 rotates from the capping completion position CU to the wiping end position WF, the cap 601 moves downward and stops near the position CD, and then the wiper 602 moves on the cap 601. Moves from back to front and stops at position WF.
[0060]
FIG. 24 is a front view of a drive input unit that inputs a drive force to cap gear 619 when AP motor 107 (see FIG. 2) rotates in CCW.
[0061]
Driving force is transmitted to the sun gear 620 on the PG base 604 from the AP motor 107 as a driving source via a plurality of gears. The driving force is transmitted to the cap cam gear 619 from the sun gear 620 via the planetary gear A621 or the planetary gear B622. The planetary gear A 621 and the planetary gear B 622 are rotatably disposed on a pendulum arm 623 that is rotatable with respect to the rotation axis of the sun gear 620, and the planetary gear A 621 and the planetary gear according to the rotation direction of the sun gear 620. One or the other of the B 622 transmits the driving force to the cap cam gear 619. For the operation of lowering the cap 601 and moving the wiper 602 forward from behind, the AP motor 107 is rotated in the CCW direction to transmit the driving force from the planetary gear B 622 to the cap cam gear 619. When the wiper 602 finishes moving from the rear to the front and stops at the position WF, the notch 619b is located at the gear portion of the cap cam gear 619 with which the planetary gear B 622 abuts. Therefore, at this time, even if the planetary gear B 622 is rotated by the AP motor 107 or more, the driving force is not transmitted to the cap cam gear 619.
[0062]
FIG. 25 is a perspective view of the cap cam gear 619.
[0063]
In the cap cam gear 619, the notch 619a is for stopping the transmission of the driving force to the blade idler gear 618, and the notch 619b is for stopping the transmission of the driving force from the planetary gear B622. Things.
[0064]
FIG. 26 is a front view of a drive input unit that inputs a driving force to the cap gear 619 when the AP motor 107 rotates in the CW direction.
[0065]
By reversing the rotation direction of the AP motor 107, the planetary gear A621 transmits driving force to the cap cam gear 619 instead of the planetary gear B622. When the driving force is transmitted to the cap cam gear 619 by the planetary gear A621, the cap 601 is moved upward after the wiper 602 is moved backward from the front.
[0066]
As described above, by switching the rotation direction of the AP motor 107, the operations of the cap 601 and the wiper 602 can be changed.
[0067]
FIG. 27 is a perspective view in which components of a driving force transmission mechanism for transmitting a driving force to the automatic sheet feeding unit 100 and the recovery unit 600 are extracted.
[0068]
The driving force to the recovery unit 600 is transmitted from the AP motor 107 to the sun gear 120 via the AP gear a116, the AP gear b117, the AP gear c118, the AP bevel gear 119, and the PG bevel gear 620. Drive is transmitted from the AP motor 107 to the paper feed roller 101 of the automatic paper feed unit 100 via an AP gear a116, an AP gear b117, and a paper feed roller gear 115. For the transmission of the driving force to the paper feeding roller 101, a dead zone in which the driving force is not transmitted is set by a paper feeding delay collar 114 rotatably arranged on the paper feeding roller shaft 108.
[0069]
FIG. 28 is a perspective view of the feed delay collar 114. FIG.
[0070]
The feed delay collar 114 has a ring shape with a projection provided on a part thereof, and two of the feed delay collars 114 are rotatably attached to the feed roller shaft 108.
[0071]
FIG. 29 is a perspective view of the end of the paper feed roller shaft 108 to which the paper feed delay collar 114 is attached.
[0072]
The rotation direction of the AP motor 107 during execution of the sheet feeding operation is defined as CCW. The driving force during the CCW rotation of the AP motor 107 is first transmitted to the paper feed roller gear 115 via a plurality of gears. The feed roller gear 115 is rotatably attached to the feed roller shaft 108, and the feed roller shaft 108 does not immediately rotate even when the feed roller gear 115 rotates. The sheet feeding roller gear 115 rotates by a predetermined amount, and the projection 115a provided at one end thereof contacts the projection of the sheet feeding delay collar 114 on the right side in FIG. 29, so that the sheet feeding delay collar 114 rotates. Similarly, when the paper feed delay collar 114 rotates by a predetermined amount, the rotational force is transmitted to the paper feed delay collar 114 on the left side in FIG. Finally, the projection of the feed delay collar 114 on the left side in FIG. 29 hits the projection of the pressure plate cam 111 fixed on the feed roller shaft 108, so that the feed roller shaft 108 starts rotating. The dead range of the feed delay collar 114 provided on the feed roller shaft 108 (the amount of rotation from receiving the driving force to transmitting it) is from the position CU to the position WF in the cam chart of FIG. The driving amount is set to be larger than the driving amount of the AP motor 107.
[0073]
FIG. 30 is a chart showing the operations of the cap 601, the wiper 602, and the paper feed roller 101.
[0074]
When the AP motor 107 continues to rotate in the CCW direction, that is, when paper feeding is continuously performed, the planetary gear B 622 idles at the notch 619 b of the cap cam gear 619 with the cap 601 lowered. Therefore, the driving force is not transmitted to the recovery unit 600, and the normal rotation of only the paper feed roller 101 continues. When the AP motor 107 rotates reversely and rotates CW from this state, the driving force is not transmitted to the paper feed roller 101 by the action of the paper feed delay collar 114, and the cap cam gear 619 is rotated by the planetary gear A621. By the CW rotation (A in FIG. 30) of the AP motor 107 at this time, the wiper 602 moves from the front (WF) to the rear (WR), and the cap 601 moves upward. By detecting the positions of the cap cam gear 619 and the cap cam 607 with a sensor (not shown), it is possible to prevent unnecessary rotation of the AP motor 107 and to detect the positions of the cap 601 and the wiper 602.
[0075]
Even if the AP motor 107 turns to CCW rotation at an arbitrary position during the CW rotation of the AP motor 107 as indicated by A in FIG. 30, the wiper 602 is The paper feed roller 101 does not rotate until the cap cam gear 619 returns from the front (WF) to the rear (WR), returns to the notch 619b, and cuts off the driving force.
[0076]
When initializing the automatic sheet feeding unit 100 and the recovery unit 600, the AP motor 107 may be rotated by the specified amount CCW as shown in B in FIG. As a result, the cap 601 is lowered, and the wiper 602 stops at the front (WF). Thereafter, the CCW rotation of the paper feed roller 101 is continued, and the position of the paper feed roller 101 may be determined by the ASF sensor switch 113.
[0077]
FIG. 31 is a perspective view in which the suction pump unit is partially sectioned.
[0078]
The suction pump unit is a piston pump that generates pressure by moving a piston 625 in a cylindrical cylinder 624. In the cylinder 624, a piston shaft 626 is provided for reciprocation in the directions indicated by arrows PA and PB. FIG. 31 shows a state of the top dead center where the piston shaft 626 is moved most in the direction indicated by arrows PB. ing. The piston shaft 626 moves with sliding contact between the outer peripheral surface thereof and a cylinder seal 627 which is a rubber member disposed and fixed inside the cylinder 624. The cylinder 624 is provided with a suction port 630 for sucking ink not contributing to image printing from the discharge port of the print head. The suction port 630 is connected to the inside of the cap 601 by a tube 612. The cylinder 624 is provided with a discharge port 631 for discharging ink from inside the pump. A piston 625, which is a rubber member, is attached to the piston shaft 626. The outer peripheral surface of the piston 625 is slidably movable with respect to the inner peripheral surface of the corresponding cylinder 624. Further, the inner diameter of the piston 625 is set to a size that produces a predetermined amount of gap with respect to the outer diameter portion of the piston shaft 626, and these portions are loosely fitted to each other.
[0079]
The space inside the cylinder 624 divided by the piston 625 is a first chamber 628 and a second chamber 629. A closed flange 632 is integrally formed with the piston shaft 626, and the outer diameter of the closed flange 632 is smaller than the inner diameter of the corresponding cylinder 624 and larger than the inner diameter of the piston 625. A piston stopper 634 corresponding to the piston 625 is integrally formed on the open flange 633 of the piston shaft 626 on the side opposite to the closed flange 632 with the piston 625 interposed therebetween. The outer diameter of the piston stopper 634 is smaller than the inner diameter of the cylinder 624 and larger than the inner diameter of the piston 625. Further, the piston stopper 634 is provided with a plurality of communication grooves that communicate the space between the inner diameter of the piston 625 and the space between the piston shaft 626 and the space of the first chamber 628.
[0080]
Next, the operation of the suction pump unit will be described.
[0081]
FIG. 32 is a partially cutaway cross-sectional view showing a state where the piston shaft 626 has moved in the direction of arrow PA from the state of FIG. 31 and the piston 625 has passed the position of the suction port 630. When the piston shaft 626 moves in the direction of the arrow PA, the piston 625 comes into close contact with the closed flange portion 632, and the first chamber 628 and the second chamber 629 are separated. Then, a positive pressure is generated by the compression of the second chamber 629, and the ink (not shown) and the like inside the second chamber 629 are discharged from the discharge port 631. Further, since the second chamber 629 expands, a negative pressure is generated inside the second chamber 629, and ink is sucked from the suction port 630.
[0082]
FIG. 33 is a partially cutaway sectional view showing a state where the piston shaft 626 has further moved in the direction of arrow PA from the state of FIG. 32 and the piston 625 has reached the bottom dead center. In the state shown in FIG. 33, the volume of the first chamber 628 is minimized and the volume of the second chamber 629 is maximized, and the suction and discharge operations are completed.
[0083]
FIG. 34 is a partially cutaway sectional view showing a state where the piston shaft 626 has slightly moved in the direction of arrow PB from the state of the bottom dead center in FIG. When the piston shaft 626 moves in the direction of the arrow PB, the piston 625 comes into close contact with the piston stopper 634, and the first chamber 628 and the second chamber 629 move between the outer peripheral surface of the piston shaft 626 and the inner peripheral surface of the piston 625. A communication state is established by the gap therebetween and the communication groove. In this state, when the piston shaft 626 moves in the direction of arrow PB, the first chamber 628 expands to generate a negative pressure, and the second chamber 629 is compressed to generate a positive pressure. At this time, by setting the flow resistance of the suction port 630 to be larger than the flow resistance of the space communicating with the communication groove from the gap between the outer peripheral surface of the piston shaft 626 and the inner peripheral surface of the piston 625, Due to the pressure difference between the chamber 628 and the second chamber 629, the suctioned ink in the second chamber 629 passes through the communication groove from the gap between the outer peripheral surface of the piston shaft 626 and the inner peripheral surface of the piston 625. It flows into one chamber 628.
[0084]
As described above, the piston shaft 626 reciprocates in the directions of arrows PA and PB, thereby sucking ink from the suction port 630 into the first chamber 628 and passing the ink from the first chamber 628 through the second chamber 629. Can be discharged from the discharge port 631.
[0085]
FIG. 35 is a perspective view of a main part showing a connection state when the suction pump unit is arranged in the printer body.
[0086]
The suction pump unit is disposed in series at the end of the discharge roller 301 opposite to the end where the discharge pulley 303 is mounted, with the center of the discharge roller 301 and the center of the piston shaft 626. The driving force is transmitted via the paper discharge roller 301. The transmission portion of the driving force to the suction pump portion includes a clutch spring 635 wound around the paper discharge roller 301, a pump delay collar 636 rotatably mounted on the shaft, and a rotation on the piston shaft 626, as described later. It is composed of a control ring 637 that is freely attached, a boat 638 that is pressed on the control ring 637 by a boat-shaped stopper 646, and is rotatably attached.
[0087]
FIG. 36 is a cross-sectional perspective view of a main part showing a connection state when the suction pump unit is arranged in the printer main body.
[0088]
A clutch spring 635 is wound around the end of the discharge roller 301, the LF motor 206 rotates forward, and the discharge roller 301 moves the recording sheet P from the conveyance unit 200 to the discharge unit 300 in the direction of arrow a. When rotating, the rotation direction is the direction in which the clutch spring 635 is loosened. Therefore, the driving force of the paper discharge roller 301 in the direction of arrow a is not transmitted to the suction pump unit. The auxiliary clutch spring 648 functions as an adjustment load for surely loosening the clutch spring 635. The winding directions of the auxiliary clutch spring 648 and the clutch spring 635 are opposite, the loosening torque of the clutch spring 635 is smaller than the tightening torque of the auxiliary clutch spring 648, and the loosening torque of the clutch spring 635 is the loosening torque of the auxiliary clutch spring 648. And the driving torque of the suction pump unit are set to be larger than the sum of the driving torque and the driving torque.
[0089]
When the LF motor 206 rotates in the reverse direction and the discharge roller 301 rotates in the direction of the arrow b, the rotation direction is the direction in which the clutch spring 635 is closed, that is, the direction in which the driving force is transmitted to the piston pump 640. However, the arm portion of the clutch spring 635 hits the protrusion at one end of the pump delay collar 636, and the pump delay collar 636 rotates. Further, the protrusion at the other end of the pump delay collar 636 hits the protrusion of the control ring 637, thereby controlling the pump. The suction pump unit does not operate until the ring 637 rotates. As described above, in the transport unit 200, the LF roller 201 may be reversed in order to transport the recording sheet P to the recording start position when performing the recording operation. Therefore, the rotation dead zone due to the pump delay collar 636 is set with a margin so as not to operate the suction pump unit when performing the recording operation.
[0090]
FIGS. 37 and 38 are perspective views in which a portion of the piston 625 is extracted.
[0091]
A continuous groove is formed at the end of the piston shaft 626 opposite to the end at which the piston 625 is mounted, and a boat shape 638 mounted on the control ring 637 moves in the continuous groove. Mating is possible. Further, the piston shaft 626 is capable of only reciprocating operation without rotating itself. That is, the piston pin 651 provided on the piston shaft 626 is guided by the groove provided on the sleeve 639 and reciprocates along the cylinder 624. Therefore, when the control ring 637 rotates, the piston shaft 626 is pushed by the boat 638 fitted in the continuous groove and reciprocates. At this time, by detecting the position of the piston shaft 626 with a sensor, it is possible to control the amount of ink suction and the like.
[0092]
Next, the suction operation of the suction pump unit and a series of recovery operations including wiping will be described.
[0093]
FIG. 39 is a flowchart for explaining the recovery operation. First, when the cap cam gear 619 is at the position WF and the carriage 401 is at the position retracted from the recovery section 600 (step S1), the AP motor 107 is rotated by a predetermined amount CW, so that the cap 601 is lowered. The wiper 602 moves from the front (WF) to the rear (WR) (Step S2). Next, the carriage 401 is moved, and the carriage 401 is moved to the capping position so that the ejection port surface 512 of the recording head of the recording head cartridge 501 faces the cap 601 (step S3). Thereafter, the cap 601 is moved upward by further rotating the AP motor 107 by the specified amount CW, and the cap 601 is brought into close contact with the discharge port surface 512 of the recording head to perform capping (step S4).
[0094]
Thereafter, the LF motor 206 is rotated in the reverse direction to operate the piston pump 640 to generate a negative pressure, and the negative pressure is introduced into the cap 601 so that ink or bubbles that are no longer suitable for printing are discharged from the discharge port of the print head. Are forcibly sucked and discharged (step S5). Then, by rotating the AP motor 107 CCW and operating the cap lever 606, the cap 601 is moved downward and separated from the recording head (capping is released), and the wiper 602 is moved rearward (WR) above the cap 601. ) To the front (WF) to wipe the periphery of the discharge port surface 512 (step S6).
[0095]
(Other embodiments)
The recovery process for maintaining the print performance of the print head is not limited to only the capping of the print head, the suction recovery process of sucking and discharging ink not contributing to image printing from the discharge port of the print head, and the wiping of the print head. . Other recovery processes include, for example, a pressure recovery process in which ink not contributing to image printing is discharged from an ejection port by pressurizing ink in the recording head, or recording an image from an ejection port of the recording head. And a preliminary ejection for ejecting ink that does not contribute to the image formation. When performing the pressure recovery process, a pump unit for generating a positive pressure may be provided instead of or together with the suction pump unit, and the positive pressure may be applied to the inside of the recording head.
[0096]
Hereinafter, embodiments of the present invention will be listed.
Embodiment 1 In a recording apparatus that records an image on a recording medium using a recording head,
Conveying means for conveying the recording medium by a driving force of a first driving source;
Feeding means for feeding the recording medium to the conveying means by a driving force of a second driving source;
Recovery means for performing a recovery operation for maintaining the recording performance of the recording head by a first drive mechanism and a second drive mechanism;
With
The first driving mechanism uses the first driving source as a driving source, and according to a driving force generation direction of the first driving source via a clutch mechanism that transmits only one-directional rotation of the first driving source. Work
The second driving mechanism has a dead zone that does not transmit a predetermined amount of rotation force when the rotation direction of the second driving source changes with respect to the feeding unit, and the second driving mechanism uses the second driving source as a driving source, and It operates according to the direction of generation of the driving force of the second driving source within the dead zone of the feeding means.
A recording device characterized by the above-mentioned.
[0097]
[Embodiment 2] The recording head is an inkjet recording head capable of discharging ink from a discharge port,
Either the first drive mechanism or the second drive mechanism is a pump mechanism that generates a pressure for discharging ink that does not contribute to image printing from an ejection port of the inkjet recording head.
The recording apparatus according to the first embodiment, wherein:
[0098]
[Embodiment 3] The recording apparatus according to Embodiment 2, wherein the pump mechanism generates a negative pressure for sucking and discharging ink not contributing to image recording from an ejection port of the inkjet recording head.
[0099]
[Embodiment 4] A discharging unit for discharging the recording medium conveyed by the conveying unit is provided,
The transport unit transports the recording medium toward the discharge unit by a driving force of the first drive source in one direction, and transports the recording medium by a driving force of the first drive source in another direction. Conveyed from the discharging means toward the feeding means,
The pump mechanism is the first driving mechanism, and is not driven by a driving force in one direction of the first driving source, and is driven by a driving force in another direction of the first driving source.
4. The recording apparatus according to claim 2, wherein
[0100]
[Embodiment 5] The recording apparatus according to any one of Embodiments 2 to 4, wherein the pump mechanism constitutes a piston pump in which a piston moves in a cylinder.
[0101]
[Embodiment 6] The recording head is an inkjet recording head capable of discharging ink from a discharge port,
One of the first drive mechanism and the second drive mechanism is at least one of a capping mechanism for capping the ink jet recording head and a wiping mechanism for wiping the surface on which the ejection openings are formed.
The recording apparatus according to any one of embodiments 1 to 5, characterized in that:
[0102]
[Embodiment 7] The second driving mechanism starts operating when the driving force of the second driving source changes from one direction to another direction,
The feeding means is not driven when the second drive mechanism is operating, feeds the recording medium to the transport means by a driving force in one direction of the second drive source, and The recording medium is sent in a direction to return from the transport unit by the driving force of the driving source in the other direction.
The recording apparatus according to any one of embodiments 1 to 6, wherein
[0103]
[Eighth Embodiment] The feeding means has a dead zone that is not driven by the driving force of the second driving source from the start of the operation of the second driving mechanism to the completion thereof. The recording device according to aspect 7.
[0104]
[Embodiment 9] When the operation of the second drive mechanism is completed by the one-way driving force of the second drive source, the second drive mechanism is driven by the one-way drive force of the second drive source continuously generated thereafter. The recording apparatus according to embodiment 7 or 8, wherein the recording apparatus is not driven.
[0105]
[Embodiment 10] A gear train for transmitting a driving force in one direction of the second drive source to the second drive mechanism is provided.
When the operation of the second drive mechanism is completed by the driving force in one direction of the second drive source, a cutout portion provided in a part of the gear train causes the second drive source to be driven by the second drive mechanism. Block transmission of driving force in one direction
The recording apparatus according to embodiment 9, wherein:
[0106]
[Embodiment 11] The feeding means has a dead zone that is not immediately driven by the driving force of the second driving source,
The second driving mechanism is driven by a driving force in one direction and the other direction of the second driving source within a dead zone of the feeding unit.
The recording apparatus according to any one of the first to tenth aspects, wherein:
[0107]
[Twelfth Embodiment] The second driving mechanism according to any one of the first to eleventh embodiments, wherein an operation amount is limited based on a detection result of a position detection unit that detects a position of a movable portion thereof. The recording device according to the above.
[0108]
[Thirteenth Embodiment] In a printhead recovery processing apparatus for performing a recovery operation for maintaining print performance on a printhead that prints an image on a recording medium,
A first drive mechanism and a second drive mechanism for performing the recovery operation;
The first drive mechanism includes a first drive source that drives a transport unit for transporting the recording medium as a drive source, and a clutch mechanism that transmits only one-directional rotation of the first drive source. Operate according to the direction of generation of the driving force of the first driving source,
The second drive mechanism uses a second drive source that drives a feeding unit for feeding the recording medium to the transport unit as a drive source, and rotates the second drive source with respect to the feed unit. It has a dead zone that does not transmit a predetermined amount of rotational force when the direction changes, and operates according to the direction of generation of the driving force of the second drive source within the dead zone.
A recording head recovery processing device, characterized in that:
[0109]
[Embodiment 14] In a recording head recovery processing method for performing a recovery operation for maintaining recording performance on a recording head for recording an image on a recording medium,
Using a first drive mechanism and a second drive mechanism for performing the recovery operation,
The first drive mechanism includes a first drive source that drives a transport unit for transporting the recording medium as a drive source, and a clutch mechanism that transmits only one-directional rotation of the first drive source. Operate according to the direction of generation of the driving force of the first driving source,
The second drive mechanism uses a second drive source that drives a feeding unit for feeding the recording medium to the transport unit as a drive source, and rotates the second drive source with respect to the feed unit. A dead zone that does not transmit a predetermined amount of rotational force when the direction changes, and operates within a range of the dead zone in accordance with the direction of generation of the driving force of the second drive source;
A recording head recovery processing method.
[0110]
【The invention's effect】
As described above, according to the present invention, the recovery operation for maintaining the recording performance of the recording head is performed using the first driving mechanism and the second driving mechanism, and the first driving mechanism transports the recording medium. The first driving source for driving the conveying means for driving the first driving source is operated as a driving source via a clutch mechanism that transmits only one-directional rotation of the first driving source in accordance with the direction of generation of the driving force of the first driving source. The second driving mechanism uses the second driving source that drives the feeding unit for feeding the recording medium to the feeding unit as a driving source, and when the rotation direction provided for the feeding unit changes. By operating according to the direction of generation of the driving force of the second driving source within a dead zone in which a predetermined amount of rotational force is not transmitted to the feeding means, the driving force of the first driving source and the second driving source is reduced. Only by switching the generation direction, the first driving mechanism and the second driving mechanism It can be easily driven and controlled.
[0111]
As a result, a complicated drive transmission switching mechanism for performing the recovery operation becomes unnecessary, and the device can be reduced in size, simplified, and reduced in cost.
[Brief description of the drawings]
FIG. 1 is a perspective view of a recording operation mechanism of a recording apparatus according to an embodiment of the present invention, from which an exterior is removed.
FIG. 2 is a perspective view showing only parts of an automatic sheet feeding unit in FIG. 1;
FIG. 3 is a side view illustrating only parts of an automatic sheet feeding unit and a conveyance unit in FIG. 1;
FIG. 4 is a side view showing only parts of an automatic sheet feeding unit and a conveying unit in FIG. 1;
FIG. 5 is a perspective view showing only parts of an automatic sheet feeding unit in FIG. 1;
FIG. 6 is a perspective view in which parts of a transport unit in FIG. 1 are extracted.
FIG. 7 is a perspective view in which parts of a transport unit in FIG. 1 are extracted.
FIG. 8 is a perspective view in which parts of a discharge unit and a transfer unit in FIG. 1 are extracted.
FIG. 9 is a perspective view in which parts of a discharge unit and a transfer unit in FIG. 1 are extracted.
FIG. 10 is a perspective view in which parts of a discharge unit and a transfer unit in FIG. 1 are extracted.
FIG. 11 is a side view in which parts of an automatic sheet feeding unit, a conveying unit, and a discharging unit in FIG. 1 are extracted.
FIG. 12 is a perspective view illustrating only components of a recording unit in FIG. 1;
FIG. 13 is a perspective view in which parts of a carriage and its scanning unit in FIG. 12 are extracted.
FIG. 14 is a perspective view in which components of a driving unit of the carriage in FIG. 13 are extracted.
FIG. 15 is a perspective view of the entire recovery unit in FIG. 1;
FIG. 16 is a perspective view of the cap unit and its operation mechanism in FIG.
17 is a perspective view of the wiper unit and its operating mechanism in FIG.
18 is a perspective view of a wiper cleaner attached to a guide rail in FIG.
19 is a side view of the wiper unit and the recording head cartridge in FIG.
FIG. 20 is a cam chart for explaining the operation of the wiper and the cap in FIG.
21 is a perspective view of the wiper and the cap at a position CU of the cam chart in FIG. 20.
FIG. 22 is a perspective view of the wiper and the cap at the position CD of the cam chart in FIG. 20.
FIG. 23 is a perspective view of the wiper and the cap at the position WF of the cam chart in FIG. 20;
24 is a front view of a drive input unit for a cap gear during CCW rotation of the AP motor in FIG. 2;
FIG. 25 is a perspective view of the cap cam gear in FIG. 23;
26 is a front view of a drive input unit for a cap gear when the AP motor of FIG. 2 rotates in the CW direction.
FIG. 27 is a perspective view in which components of a drive transmission mechanism to an automatic sheet feeding unit and a recovery unit in FIG. 1 are extracted.
FIG. 28 is a perspective view of a paper feed delay collar disposed on the paper feed roller of FIG. 27;
FIG. 29 is a perspective view of an end of a paper feed roller shaft to which the paper feed delay collar of FIG. 28 is attached.
30 is an explanatory diagram of operations of a cap, a wiper, and a paper feed roller in FIG.
FIG. 31 is a perspective view in which a part of the suction pump section in FIG. 15 is sectioned.
FIG. 32 is a cross-sectional view of the suction pump section when the piston shaft of FIG. 31 moves in the direction of arrow PA.
FIG. 33 is a cross-sectional view of the suction pump section when the piston shaft of FIG. 32 further moves most in the direction of arrow PA.
FIG. 34 is a cross-sectional view of the suction pump section when the piston shaft of FIG. 33 has moved slightly in the direction of arrow PB.
FIG. 35 is a perspective view of a connection portion between the suction pump unit of FIG. 31 and a printer main body.
FIG. 36 is a sectional perspective view of a connection portion between the suction pump unit and the printer main body in FIG. 35;
FIG. 37 is a perspective view in which a piston portion of FIG. 36 is extracted.
FIG. 38 is a perspective view in which a piston portion of FIG. 36 is extracted.
FIG. 39 is a flowchart illustrating a recovery operation in the recording apparatus of FIG. 1;
FIG. 40 is a perspective view of a conventional ink jet printer.
[Explanation of symbols]
100 Automatic paper feeder
101 Paper feed roller
102 Movable side guide
103 pressure plate
104 separation sheet
105 pressure plate spring
106 Sheet guide section
107 AP motor
108 Feed roller shaft
109 PE sensor switch
110 PE lever
111 pressure plate cam
112 ASF sensor cam
113 ASF sensor switch
114 Feed Delay Color
115 Feed roller gear
116 AP gear a
117 AP gear b
118 AP gear c
119 AP bevel gear
120 PG bevel gear
200 conveyor
201 LF roller
202 pinch roller
203 Platen
204 LF bearing
205 LF gear
206 LF motor
207 LF drive gear
208 LF two-stage gear
209 Pinch roller holder
210 Guide for transport
211 Pinch roller spring
215 Lower transport guide
300 discharge section
301 discharge roller
302 Paper ejection belt
303 Output pulley
304 spur
305 guide rail
306 spur holder
307 spur spring
400 Recorder
401 carriage
402 carriage shaft
404 Carriage FPC
407 Encoder sensor
408 Encoder scale
409 idler pulley
410 CR motor
411 CR motor pulley
412 Carriage belt
413 tension spring
500 recording head
501 head cartridge
512 Discharge port surface
600 Recovery Unit
601 Cap part
601A Suction cap
601B Protection cap
602 wiper
603 cap holder
604 PG base
605 cap spring
606 cap lever
607 cap cam
608 cap absorber
612 tubes
613 blade holder
614 Wiper lead screw
615 blade rail
616 Wiper Cleaner
617 blade screw gear
618 blade idler gear
619 cap cam gear
619a, 619b Notch
620 sun gear
621 planetary gear A
622 planetary gear B
623 Pendulum arm
624 cylinder
625 piston
626 piston shaft
627 Cylinder seal
628 First chamber
629 Second chamber
630 suction port
631 outlet
632 Closed flange
633 Open flange
634 Piston stopper
635 clutch spring
636 pump delay collar
637 control ring
638 boat-shaped
639 sleeve
640 piston pump
646 Boat type stopper
648 Auxiliary clutch spring
650 Wiper Cleaner Spring
651 Piston pin
701 chassis

Claims (1)

In a recording apparatus that records an image on a recording medium using a recording head,
Conveying means for conveying the recording medium by a driving force of a first driving source;
Feeding means for feeding the recording medium to the conveying means by a driving force of a second driving source;
Recovery means for performing a recovery operation for maintaining the recording performance of the recording head by a first drive mechanism and a second drive mechanism;
With
The first driving mechanism uses the first driving source as a driving source, and according to a driving force generation direction of the first driving source via a clutch mechanism that transmits only one-directional rotation of the first driving source. Work
A dead zone that does not transmit a predetermined amount of rotational force when the rotational direction of the second drive source changes with respect to the feeding unit;
The second driving mechanism uses the second driving source as a driving source, and operates according to a direction in which the driving force of the second driving source is generated within a dead zone of the feeding unit. Recording device.

Images