CN1704252A - Cleaning device and ink-jet printer - Google Patents

Abstract

The invention provides a cleaning device for a ink-jet printer. The device comprises a cleaner rod of a flexible scraper for wiping a nozzle surface of an ink-jet head, a locking rod for locking the ink-jet head 2 and a clutch lever. While converting the rotary motion of the clutch lever into the reciprocating motion of the cleaner rod and the locking rod through a cam mechanism, the rotary force is transmitted to the clutch lever through a friction transmission route and a gear meshing transmission route. The gear meshing transmission route is formed under the condition of wiping the flexible scraper arranged on the front end of the cleaner scraper by an auxiliary flexible scraper and moving at the same time. Because under the condition of wiping the flexible scraper by the auxiliary flexible scraper, through the meshing type transmission route, the driving force can be transmitted to the cleaner scraper, the flexible scraper can be moved smoothly.

Description

Cleaning device and ink-jet printer

Invention field

The present invention relates to a kind of cleaning device of the nozzle face that is used for wiping ink-jet printer ink gun and have the ink-jet printer of this cleaning device.

Background technology

Ink-jet printer is to discharge ink droplets from each nozzle of ink gun, thus the device of on record-paper, typewriting, and in case stop up in each ink nozzle, then print quality descends, even can not typewrite.When the ink dried in the ink nozzle, when its viscosity increases, or arrange by ink nozzle when being stained with the paper powder on the nozzle face that constitutes etc. under the situation, the ink nozzle phenomenon of blocking can take place.

Therefore, generally be loaded with cleaning device on the ink-jet printer, the balladeur train that is loaded with ink gun regularly moves to and is arranged on print range locational this cleaning device place in addition, this cleaning device wiping nozzle face, and the ink that viscosity is raise ejects from nozzle.

General cleaning device has following parts: by moving of balladeur train, with ink gun be locked in securing rod on the cleaning position, be used to cover the ink-jet skull of the nozzle face of blocked ink gun, under the state that covers the ink-jet skull, the Wiper plate of from each ink nozzle, forcing the ink suction pump of sucking-off ink, constituting by the rubber slab that is used for the wiping nozzle face etc.Because Wiper plate only just moves to the position of possibility contact nozzle face when the wiping nozzle face, therefore can avoid this Wiper plate is carried out unnecessary abrasion.And, from the miniaturization of device, the viewpoint of densification, can utilize the revolving force of the CD-ROM drive motor of ink suction pump to drive securing rod and Wiper plate.

As the Wiper plate in the cleaning device of ink-jet printer, open in the clear 62-251145 communique for example spy and to disclose.In the disclosure communique, this Wiper plate has mainboard free to rotate, be fixed on the subplate in its moving area, owing to can be wiped by subplate attached to the ink on the mainboard etc., can prevent that therefore the attachment on the mainboard from transferring on the nozzle face.

Wherein, from preventing the angle of ink nozzle obstruction etc., proposing ink-jet printer, to be set to the nozzle face of ink gun downward.At this moment, under the prone state of nozzle, with respect to reciprocating ink gun in the horizontal direction, Wiper plate rises the wiping nozzle face from its below.

But, the cleaning device that adopts Wiper plate to move up and down, because ink gun flatly passes through the top of this cleaning device, foreign matters such as the paper powder that adheres on its nozzle face fall to the peristome of the moving area of Wiper plate, thereby attached on the Wiper plate.Adhere again on the nozzle face when the wiping nozzle face attached to the foreign matters such as paper powder on the Wiper plate, thereby produce bad effect.

Therefore,, on the mobile alignment of Wiper plate, subplate is set, comes the wiping Wiper plate with this subplate in order to wipe with subplate attached to the foreign matter on the Wiper plate.But,, then will produce the rough sledding that two plates are worn jointly at short notice if suitably do not adjust both sides' contact condition.Much less, can mobile subplate, reduce the friction of it and Wiper plate, but conversely, the problem of necessary number of components can appear again increasing because of the needs of the corresponding component that is used for mobile subplate etc.

Secondly, the quantity of the parts from reduce device of cleaning device in the past, the angle of small compactization are utilized the drive source of the CD-ROM drive motor of ink suction pump as Wiper plate and securing rod.General, the revolving force of the CD-ROM drive motor of ink suction pump passes to Wiper plate and securing rod by the power transfer path of friction-type.

As mentioned above, when when contacting, moving Wiper plate,, need bigger driving force because the frictional force between them is compared during with mobile Wiper plate only with subplate.But in the existing driving mechanism of frictionally transferring power only, the driving force deficiency of Wiper plate probably can cause Wiper plate to move.And, in the moving process of Wiper plate,, both made the effect of external force probably can cause Wiper plate to move owing to any reason.

Wherein, because by the ink suction pump, the friction-type power transfer path of Wiper plate and securing rod is common, therefore in a single day increase the driving force of transmitting, so that Wiper plate is moved really, the driving force that then is used for mobile securing rod has also increased.Increased in case be used for the driving force of mobile securing rod, then will produce following problems:

That is, because the Position Control of ink gun carries out accurately, so require on ink gun can be positioned accurately with cleaning device stands facing each other mutually the position.But in case apply the external force of not expecting in advance, then ink gun will stop at the position with securing rod locking, i.e. place of staggering certain distance with the position that cleaning device stands facing each other mutually.At this moment, if it is excessive to be used for the driving force of mobile securing rod, securing rod will damage ink gun.

On the other hand, the friction-type power transfer path to securing rod and Wiper plate transmission of drive force can be made of following mechanism: transmit the ink suction pump CD-ROM drive motor revolving force rotary friction clutch, rotatablely moving of this friction clutch be converted into the reciprocating cam mechanism of Wiper plate and securing rod.

At this moment, corresponding to the rotation amount of friction clutch, Wiper plate and securing rod are made reverse rectilinear motion.That is, in case but cleaner rod moves to the wiping position of contact nozzle face, and then securing rod moves to not latched position, and is opposite, in case Wiper plate moves to the direction of leaving from nozzle face, securing rod then arrives the latched position with the ink gun locking.

Wherein, because the wiping position of Wiper plate and the latched position of securing rod determine, be benchmark therefore with these positions, determine the path increment of each bar again.Its result and compares with the situation that power source moves two bars by power transfer path separately, is necessary to make path increment to be increased to more than the necessary amounts, and this miniaturization to cleaning device self is disadvantageous.

Summary of the invention

The purpose of this invention is to provide a kind of cleaning device with secondary cleaning member of wiped clean parts, wherein above-mentioned cleaning member is used for the nozzle face of wiping ink gun, and this cleaning device can reduce the wearing and tearing of above-mentioned these cleaning members.

In addition, another object of the present invention provides a kind of cleaning device with secondary cleaning member of wiped clean parts, wherein above-mentioned cleaning member is used for the nozzle face of wiping ink gun, and the foreign matters such as paper powder that this cleaning device can prevent to fall from ink gun are attached on the cleaning member.

A further object of the present invention provides a kind of cleaning device of cleaning member of the nozzle face with wiping ink gun, and this cleaning device can make cleaning member move between wiping position and retreating position really.

A further object of the present invention provides a kind of cleaning device, this device will be from the revolving force of common rotary driving source by the friction clutch acquisition, be converted to the rectilinear motion of the securing rod that locks ink gun and the rectilinear motion of the cleaner rod of the cleaning member of the nozzle face that the wiping ink gun is installed by cam mechanism again, and this cleaning device can be limited in the path increment of securing rod and cleaner rod minimum degree.

On the other hand, the object of the present invention is to provide a kind of ink-jet printer that adopts new cleaning device.

In order to realize above-mentioned and other purpose, the invention provides a kind of cleaning device that is used to clean the nozzle face of ink gun, this device has first wiper member that is used for the aforementioned nozzle face of wiping; Support the cleaner rod of this first wiper member; By this cleaner rod is moved, the bar driving mechanism of the retreating position that aforementioned first wiper member is moved to leave from aforementioned nozzle face and the wiping position of the aforementioned nozzle face of erasable; It is characterized in that in the mobile route of aforementioned first wiper member, dispose and contact flat second wiper member that constitutes by elastomer that is provided with like that with this first wiper member.

In the cleaning device of the present invention,, therefore shortened the time of contact between them between wiping position and retreating position owing to contact with second wiper member in the way that first wiper member moves, thereby, two wiper member excessive wears can be avoided.

At this, aforementioned first wiper member is when moving up and down between the aforementioned retreating position of downside and the wiping position at upside, and preferably aforementioned second wiper member is arranged on than aforementioned retreating position more by on the position of upside.

If adopt this structure, first wiper member is in when keeping out of the way state, and second wiper member is positioned at its top, has sealed the mobile route of first wiper member.Therefore, both made from the ink gun that moves in the top position of first wiper member and fallen foreign matters such as paper powder, this foreign matter can be attached on first wiper member yet.

Best, aforementioned cleaner rod has when it moves, the 3rd wiper member that can contact with aforementioned second wiper member.If do like this,, therefore can prevent that the foreign matter that adheres on second wiper member from adhering again on first wiper member because the foreign matter that adheres on second wiper member is wiped by the 3rd wiper member.

And then, preferably the side of the retreating position side of aforementioned second wiper member in aforementioned first wiper member is by first supporting units support, the side of the wiping position side in aforementioned first wiper member is by second supporting units support, and is shorter than the length from the part of outstanding aforementioned second wiper member of aforementioned second support component from the length of the part of outstanding aforementioned second wiper member of aforementioned first support component.

Like this, make the length difference of the support component of the both sides of supporting second wiper member, compare when this length with support component is identical, first wiper member contact on one side one side when mobile with second wiper member, can be reduced in the frictional force that produces on this second wiper member.Thereby, reduce wearing and tearing to second wiper member, it can be used for a long time.

In addition, preferably the front end face of aforementioned first wiper member is in respect to the side of aforementioned second wiper member under the state of inclination and is in contact with it.If do like this, second wiper member can contact the ora terminalis part of first wiper member really, and, can make second wiper member crooked on the ora terminalis part of first wiper member.Thus, can remove fully attached to the foreign matter on the ora terminalis part of first wiper member.

Secondly, the aforementioned rod driving mechanism of best cleaning device of the present invention has rotary driving source, gear train by this rotary driving source rotation, with respect to one in the gear that constitutes this gear train, connect with the thrust friction of setting, and the slip clutch control stick that becomes concentric to be provided with this gear, the rotation of this clutch operating lever is converted to first cam part that moves of aforementioned cleaner rod, be formed on the aforementioned clutch control stick, this clutch operating lever is remained in the rotation angle range of setting, and form the engaging piece of engagement with aforesaid gears.

Adopt the bar driving mechanism that so constitutes, when can transmit the revolving force of rotary driving source, also can transmit revolving force by engagement by frictional force.Therefore,, both made external force act on cleaner rod, also can positively finish mobile by suitably setting the scope that engagement is transmitted.

Wherein, touch at aforementioned first wiper member during the moving under the state of aforementioned second wiper member, preferably keep engagement between the aforementioned engaging piece of aforesaid gears group and aforementioned clutch control stick.

In case first wiper member contacts with second wiper member, the cleaner rod that supports this first wiper member is subjected to the bigger resistance from second wiper member.And, because friction is transmitted, worry that driving force can not positively mobile cleaner rod.But, among the present invention, when first and second wiper members are in contact condition, driving force is passed to cleaner rod owing to adopt engagement to transmit, therefore, both made under the effect of the resistance of second wiper member, also can positively mobile cleaner rod.

Herein, preferably aforementioned first cam part have first cam follower that is formed on the aforementioned cleaner rod, when the aforementioned wiping position of aforementioned cleaner rod moves, first cam surface that contacts with aforementioned first cam follower, when the aforementioned retreating position of aforementioned cleaner rod moves, second cam surface that contacts with aforementioned first cam follower, in addition, aforementioned first and second cam surface forms the angle of setting.

Like this, make cleaner rod move, therefore can positively move to the direction that with the cleaner rod is target by the different cam surface of angle.

In addition, best cleaning device of the present invention has aforementioned ink gun is fixed on securing rod on the desired location, and the aforementioned rod driving mechanism has second cam part, and this second cam part is converted to the revolving force of aforementioned rotary driving source the driving force that is used to make aforementioned securing rod to move between the latched position of fixing aforementioned ink gun and the unlocked position that leaves from this ink gun.

At this moment, be preferably used in aforementioned first cam part that moves aforementioned cleaner rod and comprise the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned cleaner rod reciprocating first cam region and both made aforementioned clutch control stick rotation between aforementioned wiping position and aforementioned retreating position, aforementioned cleaner rod still stops at second cam region on the aforementioned retreating position.Similarly, preferably aforementioned second cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned securing rod reciprocating the 3rd cam region and both made aforementioned clutch control stick rotation between aforementioned latched position and aforementioned unlocked position, aforementioned securing rod still stops at the four-cam zone on the aforementioned unlocked position.

If adopt above-mentioned formation, owing to can make cleaner rod and securing rod only move necessary path increment, therefore can make their path increment be limited in necessary Min., can help the miniaturization of device.

Particularly, preferably working as aforementioned first cam part is in during aforementioned first cam region, aforementioned second cam part is in aforementioned four-cam zone, in case aforementioned first cam part moves to aforementioned second cam region, aforementioned second cam part moves to aforementioned the 3rd cam region.

Utilize this typical structure, aforementioned second cam region in aforementioned first cam part can be that the circular-arc cam path at center defines by the pivot with aforementioned clutch operating lever, similarly, the aforementioned four-cam zone in aforementioned second cam part can be that the circular-arc cam path at center defines by the pivot with aforementioned clutch operating lever.

In addition, in the suitable example of the present invention, cleaning device has the ink pump device that is used for from the ink nozzle of aforementioned ink gun suction ink, and the motor that is used to drive this ink pump device is used as aforementioned rotary driving source.

Moreover, the invention provides a kind of cleaning device that is used to clean the nozzle face of ink gun, wherein, this device has first wiper member that is used for the aforementioned nozzle face of wiping; Support the cleaner rod of this first wiper member; By this cleaner rod is moved, the bar driving mechanism of the retreating position that aforementioned first wiper member is moved to leave from aforementioned nozzle face and the wiping position of the aforementioned nozzle face of erasable; It is characterized in that the aforementioned rod driving mechanism has rotary driving source; Gear train by this rotary driving source rotation; With respect to one in the gear that constitutes this gear train, connect with the thrust friction of setting, and the slip clutch control stick that becomes concentric to be provided with this gear; The rotation of this clutch operating lever is converted to the cam part that moves of aforementioned cleaner rod; Be formed on the aforementioned clutch control stick, this clutch operating lever is remained in the rotation angle range of setting, and form the engaging piece of engagement with the aforesaid gears group.

Herein, best aforementioned cam part has the cam follower that is formed on the aforementioned cleaner rod; When the aforementioned wiping position of aforementioned cleaner rod moves, first cam surface that contacts with aforementioned cam follower; When moving with aforementioned retreating position to aforementioned cleaner rod, second cam surface that contacts with aforementioned cam follower, in addition, aforementioned first and second cam surface forms the angle of setting.

And, best aforementioned cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned cleaner rod reciprocating first cam region and both made aforementioned clutch control stick rotation between aforementioned wiping position and aforementioned retreating position, aforementioned cleaner rod still stops at second cam region on the aforementioned retreating position.

Herein, aforementioned second cam region of best aforementioned cam part can be that the circular-arc cam path at center defines by the pivot with aforementioned clutch operating lever.

Moreover, the invention provides a kind of cleaning device that is used to clean the nozzle face of ink gun, this device has aforementioned ink gun is fixed on securing rod on the desired location; The bar driving mechanism of latched position that this securing rod is moved to be fixed on the aforementioned ink gun and the unlocked position that leaves from this ink gun is characterized in that the aforementioned rod driving mechanism has rotary driving source; Gear train by this rotary driving source rotation; With respect to one in the gear that constitutes this gear train, connect with the thrust friction of setting, and the slip clutch control stick that becomes concentric to be provided with this gear; The rotation of this clutch operating lever is converted to the cam part that moves of aforementioned securing rod; Be formed on the aforementioned clutch control stick, this clutch operating lever is remained in the rotation angle range of setting, and form the engaging piece of engagement with the aforesaid gears group.

Herein, best aforementioned cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned securing rod reciprocating the 3rd cam region and both made aforementioned clutch control stick rotation between aforementioned latched position and aforementioned unlocked position, aforementioned securing rod still stops at the four-cam zone on the aforementioned unlocked position.

At this moment, the aforementioned four-cam zone of aforementioned cam part can be that the circular-arc cam path at center defines by the pivot with aforementioned clutch operating lever.

Have, the invention provides a kind of cleaning device that is used to clean the nozzle face of ink gun, this device has first wiper member that is used for the aforementioned nozzle face of wiping; Support the cleaner rod of this first wiper member; Aforementioned ink gun is fixed on securing rod on the desired location; By aforementioned cleaner rod is moved, in the time of the retreating position that aforementioned first wiper member is moved to leave from aforementioned nozzle face and the wiping position of the aforementioned nozzle face of erasable, the bar driving mechanism of the unlocked position that makes aforementioned securing rod move to the latched position of fixing aforementioned ink gun and leave from this ink gun, it is characterized in that the aforementioned rod driving mechanism has rotary driving source; Gear train by this rotary driving source rotation; With respect to one in the gear that constitutes this gear train, connect with the thrust friction of setting, and the slip clutch control stick that becomes concentric to be provided with this gear; The rotation of this clutch operating lever is converted to first cam part that moves of aforementioned cleaner rod; The rotation of aforementioned clutch control stick is converted to second cam part that moves of aforementioned securing rod.

Herein, preferably aforementioned first cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned cleaner rod reciprocating first cam region between aforementioned wiping position and aforementioned retreating position, both made the rotation of aforementioned clutch control stick, aforementioned cleaner rod still stops at second cam region on the aforementioned retreating position, aforementioned second cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned securing rod reciprocating the 3rd cam region between aforementioned latched position and aforementioned unlocked position, both made the rotation of aforementioned clutch control stick, aforementioned securing rod still stops at the four-cam zone on the aforementioned unlocked position.

At this moment, when preferably aforementioned first cam part is in aforementioned first cam region, aforementioned second cam part then is in aforementioned four-cam zone, in case aforementioned first cam part moves to aforementioned second cam region, aforementioned second cam part moves to aforementioned the 3rd cam region.

On the other hand, the present invention relates to a kind of ink-jet printer, it is characterized in that this printer have ink gun, be arranged on the locational structure as mentioned above beyond the zone of typewriting with this ink gun cleaning device, make aforementioned ink gun along the reciprocating balladeur train of mobile route that comprises aforementioned typewriting zone and the position relative with aforementioned cleaning device.

Adopt ink-jet printer of the present invention,, can not produce when therefore typewriting because the quality badness that spray nozzle clogging etc. cause owing to adopt cleaning device can clean the nozzle face of ink gun really.In addition, owing to saved the space that is provided with of cleaning device, therefore can realize the miniaturization of ink-jet printer.

Description of drawings

Fig. 1 is that expression has the cleaning device that is applicable in the ink-jet printer that is provided with cleaning device of the present invention and the stereogram of ink gun.

Fig. 2 is the exploded perspective view of major part of the cleaning device of presentation graphs 1.

Fig. 3 is the cleaning device of Fig. 1 and the general positive map of ink gun, and the expression elastic scraper is in the state of retreating position.

Fig. 4 is the cleaning device of Fig. 1 and the general positive map of ink gun, and the expression elastic scraper is in the state of wiping position.

Fig. 5 A and Fig. 5 B are that expression is installed in the cleaner rod on the cleaning device of Fig. 1 and the stereogram of elastic scraper.

Fig. 6 A, 6B, 6C are the key diagrams of the wiping action of the secondary scraper plate in the cleaning device of presentation graphs 1.

Fig. 7 is the figure of position relation between first cam part, second cam part and the tooth portion of clutch operating lever of cleaning device of presentation graphs 1.

Fig. 8 is the figure of the position relation between the tooth portion of cleaner rod, securing rod, clutch operating lever of the cleaning device of presentation graphs 1, and expression has only cleaner rod to be in to keep out of the way state.

Fig. 9 is the figure of the position relation between the tooth portion of cleaner rod, securing rod, clutch operating lever of the cleaning device of presentation graphs 1, and expression cleaner rod and securing rod are in keeps out of the way state.

Figure 10 is the figure of the position relation between the tooth portion of cleaner rod, securing rod, clutch operating lever of the cleaning device of presentation graphs 1, and expression has only securing rod to be in to keep out of the way state.

Figure 11 is the figure of the position relation between the tooth portion of cleaner rod, securing rod, clutch operating lever of the cleaning device of presentation graphs 1, the state that the expression cleaner rod begins keeping out of the way from wiping position.

Figure 12 is the figure of the position relation between the tooth portion of cleaner rod, securing rod, clutch operating lever of the cleaning device of presentation graphs 1, the expression securing rod before arriving latched position, the state of contact ink gun side.

The specific embodiment

With reference to the accompanying drawings, the embodiment that is loaded with the ink-jet printer that is applicable to cleaning device of the present invention is described.

Because the integral body of ink-jet printer constitutes with general known continuous type ink-jet printer was identical in the past, so this specification omits this part diagram and explanation.Only illustrate and illustrate the balladeur train that is loaded with cleaning device and ink gun below.

Fig. 1 be expression in this routine ink-jet printer cleaning device and be in locational balladeur train that this cleaning device stands facing each other mutually on the stereogram of the ink gun that carries, Fig. 2 is the exploded perspective view of the major part of expression cleaning device.

At first with reference to these figure, illustrate that the ink gun 2 in this routine ink-jet printer 1 and the integral body of cleaning device 10 constitute.The nozzle face 3 of ink gun 2 is carried down on balladeur train 82, can move back and forth on the horizontal direction shown in arrow A, the B in Fig. 1.

Cleaning device 10 is arranged on on the position outside the zone of ink gun 2 typewritings, it has ink-jet skull 12, is used for first wiper member of the nozzle face 3 of wiping ink gun 2, be elastic scraper 26, be used for second wiper member of this elastic scraper 26 of wiping, promptly secondary elastic scraper 51, be used for absorbing the securing rod 61 that the pump unit 14 of ink, the balladeur train 82 that is used for being loaded with ink gun 2 are locked in the position shown in Fig. 1,2 (cleaning position) from the ink nozzle (not shown) that the nozzle face 3 of ink gun 2 is being arranged.

In a single day ink gun 2 moves to the cleaning position shown in Fig. 1,2, and along with moving of ink gun 2, along the cam path 11b that is formed among the housing 11a, ink-jet skull 12 is moved upward, and covers the nozzle face 3 of ink gun 2.Under this state, securing rod 61 is moved upward, locking balladeur train 82.Under this state, by driving pump unit 14, can be from the ink nozzle on being arranged in nozzle face 3 the sucking-off ink.Then, make securing rod 61 be in the state of unlocking, first wiper member, be that elastic scraper 26 moves to the height that can touch nozzle face 3, under this state, in case ink gun 2 is moved back and forth, promptly available this elastic scraper 26 wipes out attached to the foreign matters such as paper powder on the nozzle face 3.And then secondary elastic scraper 51 is in the attitude of basic horizontal, places in the middle of the mobile route of elastic scraper 26, touches the elastic scraper 26 through here, wipes out attached to the foreign matter on this elastic scraper 26.

Below, Fig. 3 and Fig. 4 are the general positive maps of cleaning device 10, and Fig. 3 represents first wiper member, and promptly elastic scraper 26 is in the state of retreating position, and Fig. 4 represents that this elastic scraper 26 is in the state of the wiping position of erasable nozzle face 3.And Fig. 5 A, 5B are the stereograms that the cleaner rod of elastic scraper 26 is equipped with in expression, and Fig. 6 A, 6B, 6C are the part side views of the position relation between expression elastic scraper and the secondary elastic scraper.

Referring to figs. 1 through Fig. 6, the detailed construction of this routine cleaning device 10 is described.This routine cleaning device 10 for example has the housing 11 of the flat case shape that is made of resin, and this housing 11 is vertically mounted on the device frame (not shown) of ink-jet printer 1.Form the outstanding horizontal frame 11a of level from the upper part of housing 11 to the rear side of housing, 12 courts up are installed in here with the ink-jet skull, make that the ink-jet skull 12 of box-shaped can be in the position that covers nozzle face 3 with from moving between the retreating position downwards of this position along with the moving of balladeur train 82.

Be formed with on the centre position of housing 11 in the outstanding circular depression 13 of its rear side, be roughly columnar pump unit 14 (ink suction pump) and just be installed in this depressed part 13 places.The driving of this pump unit 14 support axial region 15 can along shown in arrow C or the D just, reverse rotational direction (with reference to Fig. 2) rotates.

Lower position place in pump unit 14, CD-ROM drive motor 71 (rotary driving source) is installed in the housing 11, and the output shaft 71b of this CD-ROM drive motor 71 and the driving of pump unit 14 support axial region 15 extend abreast, and its front end is fixed with double helical spurgear 71a.Two rank gear 72 can be installed in the housing 11 with rotating freely, and this pair rank gear 72 is made of gear wheel 72a and the pinion 72b that coaxial state forms, gear wheel 72a and double helical spurgear 71a engagement.And the pump gear 16 that is in coaxial state inserts in the driving support axial region 15 of pump unit 14, and its pump gear 16 meshes with the pinion 72b of two rank gear 72.Thereby the revolving force of CD-ROM drive motor 71 is delivered to pump gear 16 through double helical spurgear 71a and two rank gear 72.

Thus, pump unit 14 forms connecting portion 14a on its circular end face, with the side of its pump gear that stands facing each other mutually 16 on form connecting portion 16a.Thereby in case pump gear 16 rotations, its connecting portion 16a is connected with the connecting portion 14a of pump unit 14, then these pump gear 16 driving pump unit, 14 rotations.

(clutch operating lever)

Under the state that the face side with pump gear 16 overlaps, the clutch operating lever 17 of friction interconnection system can be installed in the driving of pump unit 14 with rotating freely and support on the axial region 15.Clutch operating lever 17 has basic the same with the pump gear 16 size discoideus 17b of clutch portion that slightly is, and is formed extended at both sides the 17c of bar portion of fan-shaped to radial direction from the 17b of this clutch portion.

Because compression disc spring 81 is pressed on the 17b of clutch portion of clutch operating lever 17 on the side of pump gear 16, utilize the frictional force that produces between 17b of clutch portion and the pump gear 16, as long as non-slip on the rubbing surface, clutch operating lever 17 will rotate together with pump gear 16.That is, pass through the friction bang path of the gear train of double helical spurgear 71a, two rank gear 72 and pump gear 16 compositions successively, CD-ROM drive motor 71 drives clutch operating levers 17.

Shown in Fig. 2,3, on the excircle end face of the 17b of clutch portion of clutch operating lever 17, form the 17m of tooth portion (engaging piece) that can become set angle scope ground and the pinion 72b engagement of two rank gear 72.In the setting rotating range of clutch operating lever 17, the 17m of tooth portion is in the state with pinion 72b engagement.Under this state, clutch operating lever 17 is driven by CD-ROM drive motor 71 by being connected with a joggle of the 17m of tooth portion when friction connects.

As shown in Figure 1 to Figure 3, in the upper part of housing 11 and end portion, be formed with first retainer 21 that rotates boundary up and down and second retainer 22 of the 17c of bar portion that is used to limit clutch operating lever 17.

(elastic scraper and secondary elastic scraper)

With the partly overlapping state of the 17c of this bar portion under, be provided with cleaner rod 25 in the face side of the 17c of bar portion of the clutch operating lever 17 of above-mentioned formation, elastic scraper 26 is installed in the upper end of this cleaner rod 25.Shown in Fig. 5 (a) and (b), cleaner rod 25 have make with resin for example etc., be the tabular main part 25a of L font slightly, this main part 25a has the 25b of bar portion that extends to length direction and from the wrist 25c of the 25b of bar portion to the bending of approximate vertical direction.

Elastic scraper 26 (first wiper member) is installed on the wrist 25c of cleaner rod 25.Elastic scraper 26 is to be fitted with elastomeric material 26a that sets thickness (for example 0.8mm) and the plate that roughly is rectangle of setting the felt materials 26b of thickness (for example 0.7mm).The front end face of this elastic scraper 26 is called the first scraping plate part 26c.Elastomeric material 26a has the so-called cleaning function of the ink on the wiping nozzle face 3, and felt materials 26b has for ink on the absorption nozzle face 3 etc. and the what is called friction function of wiping.

The lower end edge portion branch of elastic scraper 26 is installed on this wrist 25c to set the equitant state of width at the wrist 25c with cleaner rod 25, and this lap is covered by cockscomb 27 (the 3rd wiper member).Cockscomb 27 is thin plates bigger than the wrist 25c of cleaner rod 25, and close attachment is on the elastomeric material 26a of elastic scraper 26.

The following ora terminalis of cockscomb 27 stretches out slightly from the following ora terminalis of the wrist 25c of cleaner rod 25, has the function of the 3rd scraping plate part 27a herein.The 3rd scraping plate part 27a is parallel with the first scraping plate part 26c of elastic scraper 26.

So the cleaner rod 25 that constitutes can move along first and second gathering sills, 41,42 easy on and off that are formed on the housing 11.First gathering sill 41 extends to the upper section of housing 11 always to vertical direction from the centre position of housing 11.The chamfered groove portion 43 that always extends to first retainer 21 to horizontal direction is connected on the upper part of this gathering sill 41.

Second gathering sill 42 is positioned at the downside of first gathering sill 41, extends to the below part of housing 11 to vertical direction from the centre position of housing 11 always.Be arranged in parallel the interval d1 that above-mentioned first and second gathering sills 41,42 are separated by certain.

Cleaner rod 25 1 sides, the end of the wrist 25c side of the 25b of its bar portion and the end of opposite side are formed with respectively and can support projection 31 and can support projection 32 along second of second gathering sill, 42 slips along first of first gathering sill 41 and 43 slips of chamfered groove portion.When first supports that projection 31 and second supports that projection 32 is inserted first gathering sill 41 and second gathering sill 42 respectively, keep under the state of vertical attitude at elastic scraper 26, cleaner rod 25 can move up and down along above-mentioned gathering sill 41,42, its position under is a retreating position, and its position of going up most is the wiping position of erasable nozzle face 3.

Herein, as Fig. 1, shown in Figure 4, first of cleaner rod 25 supports projection 31 to insert in the chamfered groove portion 43, and elastic scraper 26 is upwards side-prominent from the ink-jet skull 12 of housing 11, and its first scraping plate part 26c is positioned at the top of the nozzle face 3 of ink gun 2.In case entering angle slot part 43, move to horizontal direction the upper part of cleaner rod 25, is arranged in the embeded slot 44 that laterally embeds the top that is arranged on chamfered groove portion 43 on the extension line of its wrist 25c, from the outstanding protuberance 25d of the 25b of bar portion.

As shown in Figure 3, first gathering sill 41 of housing 11 and second gathering sill 42 interval d1 in the horizontal direction is than supporting jut 31 and second to support that the interval d2 of bearing of trend quadrature of wrist 25c of jut 32 is little with first of cleaner rod.Therefore, support the elastic scraper 26 of this cleaner rod 25, make the minute angle α (for example 5 degree) that its first scraping plate part 26c only tilt to set with respect to horizontal direction.

And the lateral location of first gathering sill 41 in the housing 11 promptly is formed with the scraper plate container 45 of the elastic scraper 26 that can hold cleaner rod 25 on the lower position of ink-jet skull 12.This scraper plate container 45 roughly is the case shape, and the big I of its upper face side opening is come in and gone out for elasticity scraper plate 26.

Secondary elastic scraper 51 (second wiper member) is supported in scraper plate support portion 46 (support component), and blocks above-mentioned opening portion (in other words, stopping up the mobile route of elastic scraper 26).Secondary elastic scraper 51 is to be rectangular slightly tabular by what elastomeric material was made, is formed on the length of the length of the second scraping plate part 51a on the ora terminalis of its length direction greater than the first scraping plate part 26c of elastic scraper 26.

Scraper plate support portion 46 is made of second support component 47 and first support component 48, and above-mentioned support component 47,48 is formed with the narrow slit that can insert secondary elastic scraper 51 with the thickness spaced and parallel setting of some greatly than secondary elastic scraper 51 between them.The claw 49 that secondary elastic scraper 51 is positioned at the narrow slit inboard blocks, thereby is installed on the scraper plate support portion 46.

Herein, shown in Fig. 6 (a), the outstanding only length L 1 (for example 5mm) of top front end from second support component 47 of secondary elastic scraper 51, below it from first support component, 48 outstanding only length L 2 (for example 7mm).

(securing rod)

On the other hand, the upper portion office of housing 11, with the adjacent position of cleaner rod 25 on securing rod 61 is set.This securing rod 61 is a clava, and its leading section has the connecting portion 61a that can be connected with the balladeur train 82 that carries ink gun 2.

Be provided with in the housing 11 and be used for securing rod 61 the 3rd gathering sill (not shown) of direction guiding up and down.The connection projection 61b that is arranged on securing rod 61 bellies slides along the 3rd gathering sill, and securing rod 61 can be moved up and down.

(driving of clutch operating lever and securing rod with cam part and tooth portion)

At first explanation is used for rotatablely moving of clutch operating lever 17 is converted to reciprocating first cam part of cleaner rod 25.Be formed with the inscape that is used to make first cam part that cleaner rod 25 moves up and down on the excircle of the 17c of bar portion of clutch operating lever 17 part, i.e. the first cam path 17d.This first cam path 17d is made of the cam path 17f of the first circular-arc cam path 17e and triangle, the above-mentioned first circular-arc cam path 17e is that the support axial region 17a with the 17b of clutch portion is the center, the central angle that becomes to set by same radius forms, and the cam path 17f of triangle forms to the zone that support axial region 17a side expands to general triangular from this first circular-arc cam path 17e.Be provided with the first cam surface 17fl and the second cam surface 17f2 among the triangular cam groove 17f, the first cam surface 17f1 is used to make the cleaner rod 25 that has elastic scraper 26 to move to the wiping position of erasable nozzle face 3, the second cam surface 17f2 be used to make cleaner rod 25 from nozzle face 3 to away from direction move, the first cam surface 17f1 and the second cam surface 17f2 form set angle.On the other hand, form at the belly of the 25b of bar portion of cleaner rod 25 and insert the first gathering sill 17d and first cam follower 33 slidably.

The following describes second cam part that moves up and down that is used for rotatablely moving of clutch operating lever 17 is converted to securing rod 61.Be formed with on the excircle of the 17b of clutch portion in the clutch operating lever 17 part and be used to the second cam path 17g that securing rod 61 is moved.This second cam path 17g is made of the second circular-arc cam path 17g1, action cam path 17g2 and locking groove 17g3.

The second circular-arc cam path 17g1 is the center with the support axial region 17a of the 17b of clutch portion, forms the central angle of setting by same radius.And action cam path 17g2 to be a end radius from the second circular-arc cam path 17g1 enlarge gradually, in the scope of the central angle of setting, form.The radius recruitment of this action cam path 17g2 is equivalent to the haul distance L1 (with reference to Fig. 8) of the connecting portion 61a of securing rod 61.And then locking groove 17g3 is that end from action cam path 17g2 is to extending and form with the direction of radial direction approximate vertical.On the other hand, be formed with on the bottom of securing rod 61 and insert among the second gathering sill 17g and the second cam follower 61c slidably.

The mutual alignment relation of clutch operating lever 17, cleaner rod 25 and securing rod 61 is described with reference to Fig. 7 to Figure 12 herein.

In above-mentioned figure, Fig. 7 is expression first cam part that makes clutch operating lever 17 rotation of cleaning device 10 in this example, second cam part that makes the securing rod advance and retreat, and the figure of the position relation of the 17m of tooth portion.Fig. 8,9,10,11, the 12nd, the figure of the position relation of expression cleaner rod 25 and securing rod 61, Fig. 8 represents that cleaner rod 25 is in retreating position, securing rod 61 is in the state of latched position, Fig. 9 represents that cleaner rod 25 and securing rod 61 are in the state of retreating position together, Figure 10 represents to have only securing rod to be in the state of retreating position, Figure 11 represents the state of cleaner rod 25 when the wiping position of erasable nozzle face begins to keep out of the way, and Figure 12 represents that securing rod 61 begins state when mobile from its retreating position to latched position.

Among the above-mentioned figure, the central angle of the locking groove 17g3 among the second cam path 17g is α 01, and the central angle of action cam path 17g2 is α 02, and central angle central angle alpha 01 and central angle alpha 02 and that be anglec of rotation α 1, the first cam path 17d is β 1.

In this example, the anglec of rotation α 1 of central angle β 1 to the second cam path 17g of the first cam path 17d is big.When the second cam follower 61c of securing rod 61 was arranged in the intersection point part P place of the action cam path 17g2 of the second cam path 17g and the second circular-arc cam path 17g1, the first cam path 17d made first cam follower 33 of cleaner rod 25 contact with the first cam surface 17f1 of triangular cam 17f (with reference to Fig. 9).

And then, if the wiper member 26 of cleaner rod shown in Figure 8 25 is shift motion length L 2 only, and the anglec of rotation of the first cam surface 17f1 of the first cam path 17d is when being β 2, then should make the central angle alpha 2 of the second circular-arc cam path 17g1 of the second cam path 17g bigger than anglec of rotation β 2.

In addition, be formed on the 17m of tooth portion on the outer circumference surface of the 17b of clutch portion of clutch operating lever 17 and keep the angle intervals θ o (with reference to Fig. 7) that sets apart from the first cam surface 17f1 of triangular cam groove 17f.The angle of above-mentioned setting and cleaner rod 25 or securing rod 61 are provided with explicitly, preferably are set in 0 ° to about 90 ° scope, for example 70 °.

The angular range, theta 1 (with reference to Fig. 7) that the 17m of tooth portion forms also has relation with various quantity such as the displacement of cleaner rod 25 or securing rod 61 and profiles of tooth, for example, is set and is about 54 °.

(action of cleaning device)

The following describes the action of the cleaning device 10 of this routine ink-jet printer 1.

Non-typewriting state (lock-out state)

At first, under non-typewriting (stopping) state, as shown in Figure 8, clutch operating lever 17 is parked on second retainer, the 22 contacted positions with housing 11 downsides.Under this state, cleaner rod 25 is in its retreating position from wiping position descending stroke length L 2.And first cam follower 33 of cleaner rod 25 is positioned at the upper end of the first circular-arc cam path 17e on the excircle part of the 17c of bar portion that is formed on clutch operating lever 17.

Under non-typewriting state, securing rod 61 is from its retreating position upward stroke length L 1, arrive its latched position, be meshed with the lock slots (not shown) that is provided with on the balladeur train 82 that carries ink jet-print head 2, ink jet-print head 2 pinnings (in this example, are pinned the balladeur train 82 that is equipped with ink jet-print head 2.)。At this moment, the second cam follower 61c of securing rod 61 is arranged in the locking groove 17g3 of the second cam path 17g on the excircle part of the 17b of clutch portion that is formed on clutch operating lever 17.

Under this non-typewriting state, be formed on the outer circumference surface of the 17b of clutch portion of clutch operating lever 17 the 17m of tooth portion not with two rank gear 72 in pinion 72b engagement.Therefore, transmit by the 17b of clutch portion of the clutch operating lever 17 that forms by the pressure that is arranged on the compression disc spring 81 on the pump gear 16 and the frictional force between the pump gear 16 from the power of CD-ROM drive motor 71.

But, under this state,, therefore make clutch operating lever 17 also can only between clutch operating lever 17 and pump gear 16, produce slip to the effect of the power of this direction rotation because clutch operating lever 17 is blocked in the second retainer place of downside.Therefore, only the rotary pump gear 16, and driving pump unit 14 can form the action that suction is arranged in ink that the nozzle on the nozzle face 3 of ink jet-print head 2 discharges, bubble etc.

Then, in this non-typewriting state (lock-out state), if CD-ROM drive motor 71 rotates clutch operating lever 17 upward, then securing rod 61 unlocks.As shown in Figure 9, clutch operating lever 17 begins only to rotate anglec of rotation α 1 along the direction shown in the arrow C from the position of second retainer 22 that props up housing 11.

By above-mentioned rotation, the securing rod 61 that is in latched position is descending stroke length L 1 only, arrives its retreating position.Promptly, be accompanied by the rotation of the 17b of clutch portion of clutch operating lever 17, the action cam path 17g2 of the second cam path 17g that the second cam follower 61c of securing rod 61 is formed is herein pressed to the below, arrives the intersection of this action cam path 17g2 and the second circular-arc cam path 17g1.

Relative therewith, cleaner rod 25 is the same during with non-typewriting (stopping) state, from the wiping position only haul distance L2 that descends, rests on the retreating position place of below.That is, because first cam follower 33 of cleaner rod 25 slides along the first circular-arc cam path 17e on the excircle part of the 17c of bar portion that is formed on clutch operating lever 17, so clutch operating lever 17 neither rotate also mobile.Clutch operating lever 17 is after anglec of rotation α 1 only, and first cam follower 33 of this cleaner rod 25 arrives the intersection of the first cam surface 17f1 of circular-arc cam path 17e and triangular cam groove 17f.

On the other hand, if clutch operating lever 17 anglec of rotation α 1 only then is formed on the 17m of tooth portion on the outer circumference surface of the 17b of clutch portion of clutch operating lever 17 and enters the state that is meshed with pinion 72b in two rank gear 72.

Under the state of removing above-mentioned engagement, balladeur train 82 makes ink jet-print head 2 move back and forth along arrow A, B direction (with reference to Fig. 1), can typewrite on the record-paper that transports.

The wiping state of nozzle face

During with the nozzle face 3 of elastic scraper 26 wiping ink jet-print heads 2, as shown in figure 10, clutch operating lever 17 only begins along the direction anglec of rotation shown in the arrow C (α 1+ β 2) from the position of second retainer 22 that props up housing 11.Its result, clutch operating lever 17 is in the state of first retainer 21 that props up upside.

During these clutch operating lever 17 rotations, the revolving force of CD-ROM drive motor 71 is delivered to clutch operating lever by means of the frictional force between pump gear 16 and the clutch operating lever 17, meanwhile, by means of 17m of tooth portion on the outer circumference surface that is formed on clutch operating lever 17 and the engagement between the pinion 72b, can directly transmit without pump gear 16.Therefore, the effect of external force also can make clutch operating lever 17 rotate really.

During 17 rotations of this clutch operating lever, the first cam surface 17f1 that is formed on the first cam path 17d on the excircle part of the 17c of bar portion of clutch operating lever 17 with first cam follower 33 of cleaner rod 25 along the direction hoist travel length L2 that makes progress shown in the arrow E.

Thus, the 17m of tooth portion that is positioned on the outer circumference surface of the 17b of clutch portion of clutch operating lever 17 only rotates (α 1+ β 2) moment before at clutch operating lever 17, just removed the engagement with pinion 72b.Therefore after this, clutch operating lever 17 by means of and pump gear 16 between frictional force transmit revolving force, lift cleaner rod 25 by this revolving force.

Thus, cleaner rod 25 arrives the wiping position of erasable nozzle face 3.Under this state, first of cleaner rod 25 supports jut 31 and second to support jut 32 to lay respectively at from chamfered groove portion 43 that the upper end edge horizontal direction of first gathering sill 41 of housing 11 is provided with, and the upper end of second gathering sill 42, from the outstanding protuberance 25d of the 25b of bar portion of cleaner rod 25 from the laterally inserted embeded slot 44 that is arranged on chamfered groove portion 43 tops.Its result, cleaner rod 25 can keep stable status at its wiping position.

Thus, cleaner rod 25 is lifted to wiping position, with respect to the elastic scraper 26 of end mounted thereto, ink gun 2 can move back and forth on the direction of arrow A shown in Figure 1 or B.Its result, the ink on the available elastic scraper 26 wiping nozzle face 3, paper powder etc.

On the other hand, when cleaner rod 25 rose, the second cam follower 61c of securing rod 61 slided along the second circular-arc cam path 17g1 of the second cam path 17g on the excircle part of the 17b of clutch portion that is formed on clutch operating lever 17.Thereby, both having made clutch operating lever 17 rotations, securing rod 61 can not move yet, but is still on its retreating position.

Cleaner rod keep out of the way action

Then, after the cleaning nozzle face 3, when typewriting, cleaner rod 25 must be kept out of the way along the direction shown in the arrow F from wiping position.Figure 11 is the figure of the state after expression cleaner rod 25 descends.

At this moment, first cam follower 33 of cleaner rod 25 second cam surface of triangular cam groove 17f of excircle part that is positioned at the 17c of bar portion of clutch operating lever 17 is pushed down.

The first cam surface 17f1 of this triangular cam groove 17f and the second cam surface 17f2 keep the angle γ 0 of setting.Thus, clutch operating lever 17 from the position of first retainer of contact housing 11 to the direction shown in the arrow D only during anglec of rotation γ 1, first cam follower 33 of cleaner rod 25 touches the second cam surface 17f2 of clutch operating lever 17, after this, push down cleaner rod 25 and begin to move.

This angle γ 0 is related to the configuration of cleaner rod 25 and clutch operating lever 17, can be in 0 ° (cam surface 17f1 becomes the state of parallel interval with cam surface 17f2) above scope with angle initialization, for example can be 55 °.

Herein, if clutch operating lever 17 only rotates γ 1, then be formed on the 17m of tooth portion on the outer circumference surface of the 17b of clutch portion of clutch operating lever 17 and be in state with the pinion 72b engagement of two rank gear 72.In case form engagement, the frictional force that produces between the 17b of clutch portion of the power of CD-ROM drive motor 71 by clutch operating lever 17 and the pump gear 16 obtains transmission, meanwhile, is directly delivered to clutch operating lever 17 by engaging piece.Therefore, can guarantee transferring power.In addition, securing rod 61 can be still on its retreating position.Thus, clutch operating lever 17 retreats into position shown in Figure 9 once more.

Action in the time of can not locking

Thus, to control the position of ink gun 2 in order typewriting,, therefore will to adopt the high control method of precision because print quality is had very big influence.But when being subjected to the external force of beyong contemplation, securing rod 61 can not make ink gun 2 stop on the lockable position.

At this moment, securing rod 61 was risen in order to lock ink gun 2, as shown in figure 12, the front end of securing rod 61 touches the part of the lock slots (not shown) that is different from ink gun 2, therefore can not rise.

In this example, when securing rod 61 rose, the second cam follower 61c of securing rod 61 slided along the action cam path 17g2 of the second cam path 17g on the excircle part of the 17b of clutch portion that is arranged in clutch operating lever 17.Therefore, securing rod 61 can not embed in the lock slots of ink gun 2 sides, and when the part that touches in addition, cam follower 61c is arranged in the way of this action cam path 17g2.

Under this state, as shown in figure 12, the 17m of tooth portion that is provided with on the outer circumference surface of the 17b of clutch portion of clutch operating lever 17 not with the pinion 72b of two rank gear 72 engagement, its power is produced by the thrust that is arranged on the compression disc spring 81 on the pump gear 16, the frictional force transmission of generation between the 17b of clutch portion that only depends on clutch operating lever 17 and the pump gear 16.Therefore, securing rod 61 arrives before the latched positions, when touching ink gun 2 surperficial, produces slip between these pump gears 16 and the clutch operating lever 17, and securing rod 61 does not rise.Thus, can prevent that ink gun 2 grades from sustaining damage.

As mentioned above, in this routine cleaning device 10, the first cam surface 17f1 that is formed on the triangular cam groove 17f on the excircle part of the 17c of bar portion of clutch operating lever 17 forms the angle of setting with the second cam surface 17f2, thereby can increase the angle of this second cam surface 17f2 and chamfered groove portion 43.Its result, as long as rotary clutch control stick 17, first gathering sill 41 that can extend along the above-below direction that is arranged on the housing 11 with from the upper end of first gathering sill 41 to the chamfered groove portion 43 that horizontal direction is extended, mobile smoothly cleaner rod 25.

In this routine cleaning device 10, to the path of clutch operating lever 17 transferring power is two systems, one is the bang path by the frictional force between gear pump 16 and the clutch operating lever 17, and another 17m of tooth portion that is arranged on the setting position on the outer circumference surface of the 17b of clutch portion of clutch operating lever 17 meshes and the bang path of formation with the pinion 72b that transmits from two rank gear 72 of the power of CD-ROM drive motor 71.

The power transfer path that engagement forms only limits in the setting rotation angle range of clutch operating lever 17.In other words, only limit to cleaner rod 25 in lifting way when mobile.

Therefore, ink gun 2 can not be stopped at owing to being connected on the position of setting with securing rod 61, in case securing rod 61 contacts with ink gun 2, both made to CD-ROM drive motor 71 and sent the driving control signal that exceeds necessity, also just on the 17b of clutch portion of clutch operating lever 17 and the rubbing surface between the pump gear 16, produce slip, can not damage each parts.Thereby when such abnormal conditions take place, can simplify control and handle.

When the pinion 72b engagement of the 17m of tooth portion and two rank gear 72 is in the setting range, because gear transferring power and frictional force simultaneously, therefore transferring power positively.For example, when in cleaner rod 25 is being kept out of the way the way of state, temporarily stopping, having only the transmission of power of frictional force also can make it to stop on certain position, also can obtain not enough power simply by frictional force simultaneously.

Particularly, in this example, the elastic scraper 26 that is installed on the cleaner rod 25 touches during the secondary elastic scraper 51, and the mode that driving force is transmitted by engagement is passed to cleaner rod 25 places.Thus, both made because the CONTACT WITH FRICTION of two scraper plates has bigger masterpiece to be used on the cleaner rod 25, this cleaner rod 25 also can positively move.(wiping action of secondary elastic scraper 51 will be described in detail later.)

And then, in this routine cleaning device 10, clutch operating lever 17 makes when securing rod 61 is mobile in the second cam path 17g, cleaner rod 25 is motionless in the first circular-arc cam path 17e of the first cam path 17d, and when cleaner rod 25 was mobile in the first cam path 17d, securing rod 61 was motionless in the second circular-arc cam path 17gl of the second cam path 17g.Thus,, can only there be any one to move, therefore can makes the haul distance L2 of cleaner rod 25 and the haul distance L1 of securing rod 61 drop to necessary minimum degree owing to can make in cleaner rod 25 or the securing rod 61 by means of the rotation of clutch operating lever 17.

Thereby, because in housing 11,, therefore help the miniaturization of cleaning device 10 own as long as the haul distance L1 of the haul distance L2 of cleaner rod 25 and securing rod 61 can guarantee that necessary space is just passable.

In addition, be corresponding to the direction of rotation of clutch operating lever 17, mobile respectively cleaner rod 25 and securing rod 61, thus can simplify the controlling organization of rotation of control CD-ROM drive motor 71.

Particularly, in this example, when securing rod 61 is positioned at zone that securing rod 61 is moved (action cam path 17g2) and make boundary member P place between its motionless zone (the second circular-arc cam path 17g1), cleaner rod 25 is in make the motionless zone (the first circular-arc cam path 17e) of cleaner rod 25 and the zone (cam surface 17f1) that moves it between boundary member on.Thus, because the rotation of clutch operating lever 17 must be attended by moving of any one party in securing rod 61 or the cleaner rod 25, therefore the rotation amount of clutch operating lever 17 can be reduced to minimum.Its result can more simplify the driving controlling organization of securing rod and clutch operating lever.

In addition, in this example,, therefore have and shorten the advantage of elastic scraper 26 near the time of the nozzle face 3 of ink gun 2 owing under the state that securing rod 61 is not moved, the elastic scraper 26 of cleaner rod 25 is kept out of the way near the downside of secondary elastic scraper 51.

(wiping action of secondary elastic scraper 51)

Below mainly with reference to Fig. 6, when elastic scraper 26 liftings that are installed on the cleaner rod 25 are described, the action of secondary elastic scraper 51.

As previously mentioned, under the state in elastic scraper 26 is arranged on the scraper plate container 45 of housing 11, the opening of its upside is covered by secondary elastic scraper 51.Thus, both made foreign matters such as paper powder from the top position that the nozzle face 3 of reciprocating ink gun 2 is fallen secondary elastic scraper 51, this pair elastic scraper 51 also can be caught it, and can be attached on the elastic scraper 26.

In case being installed in the elastic scraper 26 of the upper end of cleaner rod 25 rises, shown in Fig. 6 (a), the first scraping plate part 26c is close with respect to secondary elastic scraper 51 limit inclined sides, at first, the end of the side of the first scraping plate part 26c (Fig. 3 left side) touch secondary elastic scraper 51 below, after this, the contact portion of the wire of the first scraping plate part 26c and secondary elastic scraper 51 expands to the end of the opposite side of the first scraping plate part 26c gradually.

On the other hand, after elastic scraper 26 makes the left part projection of secondary elastic scraper 51, go up crooked to the first scraping plate part 26c of elastic scraper 26 gradually.Thus, shown in Fig. 6 (b), wipe below secondary elastic scraper 51 attached to the thing on the first scraping plate part 26c of elastic scraper 26, on the other hand, the length that second support component 47 from its scraper plate support portion 46 of secondary elastic scraper 51 stretches out is that the part of L1 is stuck up to upside.

Along with moving of cleaner rod 25, it is R1 ground case of bending that the above-mentioned extension of secondary elastic scraper 51 keeps radius of curvature substantially, and on the elastomeric material 26a of the elastic scraper of wiping simultaneously 26 and on the cockscomb 27.Thus, not only attached to the thing on the first scraping plate part 26c of elastic scraper 26, and also wiped attached to the thing on the elastomeric material 26a of elastic scraper 26 with attached to the thing on the cockscomb 27.

With respect to the elastic scraper 26 of being wiped attachment by secondary elastic scraper 51, as previously mentioned, ink gun 2 is moved back and forth in the direction (with reference to Fig. 1) of arrow A or B.Thus, elastic scraper 26 ink that the quilt that adheres on the nozzle face 3 is adhered and paper powder etc. have all been removed.Promptly, when ink gun 2 from cleaning position shown in Figure 1 to the typewriting zone when mobile in the direction of arrow B, with elastomeric material 26a side wiping nozzle face 3, when ink gun 2 from the zone of typewriting to cleaning position when the arrow A direction moves, with felt materials 26b side friction nozzle face 3.

Cleaned after the nozzle face 3 of ink gun 2, when cleaner rod 25 was descended, the 3rd scraping plate part 27a of cockscomb 27 was in contact with it under the state that tilts with respect to secondary elastic scraper 51.Its result, the foreign matter that adheres on top or its second scraping plate part 51a of secondary elastic scraper 51 is wiped by scraper plate container 45 sides.

On the other hand, shown in Fig. 6 (c), secondary elastic scraper 51 is along with the decline of cleaner rod 25, the length of stretching out from first support component 48 of scraper plate support portion 46 is that the part of L2 is bent downwardly, with elastic scraper 26 period of contact, the basic state bending that continues to keep with the radius of curvature R 2 bigger than above-mentioned radius of curvature R 1.

At this moment, because what elastic scraper 26 was subjected to is that the resistance of the secondary elastic scraper 51 of R2 is that the resistance of secondary elastic scraper 51 of R1 is little than what be subjected to from radius of curvature from radius of curvature, when therefore cleaner rod 25 descended, the frictional force that the frictional force that produces on elastic scraper 26 produces on elastic scraper 26 when rising than cleaner rod 25 was little.On the other hand, the resistance from elastic scraper 26 that secondary elastic scraper 51 is subjected to is also same as described above, owing to compare when rising with cleaner rod 25, resistance during decline is less, when therefore cleaner rod 25 descended, the frictional force that the frictional force that produces on secondary elastic scraper 51 produces on secondary elastic scraper 51 when rising than cleaner rod 25 was little.

Thus, if adopt this example, because the upper side of elastic scraper 26 is covered by secondary elastic scraper 51, therefore can prevent that foreign matter such as paper powder etc. is attached on the elastic scraper 26, its result during cleaning ink gun 2, can prevent that attachment from shifting to nozzle face 3 from elastic scraper 26.

Secondary elastic scraper 51 is during with the attachment on the bigger frictional force wiping elastic scraper 26, because wishing secondary elastic scraper 51 avoids from elastic scraper 26 with less frictional force, therefore compare during with fixed joint elastic scraper 51 simply, can reduce the wearing and tearing of elastic scraper 26 and secondary elastic scraper 51.And, need not change elastic scraper 26 grades and just can use such cleaning device 10 for a long time.

Particularly, in this example,, with the size of support component (47,48), can realize some effect respectively as long as change the upper face side and the following side of secondary elastic scraper 51 simply.Because these support components 47,48th, therefore single part is not easy to increase number of components, and advantage is to realize some effect.

At this, a feature of this example is when cleaner rod 25 rises and when decline, the crooked torque M difference that on secondary elastic scraper 51, produces, thus according to the crooked moment of torsion M of secondary elastic scraper 51, thus the frictional force that produces on the elastic scraper 26 and and the effect of resistance under, the frictional force that produces on the secondary elastic scraper 51 is also different.

The crooked moment of torsion M of secondary elastic scraper 51 is defined as be shown below such.In this example, when cleaner rod 25 rises and when descending, its radius of curvature R difference, but, replace above-mentioned situation also can change the cross sectional shape of secondary elastic scraper 51 itself (according to the difference of the configuration of secondary elastic scraper 51, comprise its cross sectional shape) and material, when making secondary elastic scraper 51 upwards lateral bending is bent and when lateral bending is bent downwards, 2 moment of torsion I are different with longitudinal elastic coefficient E in its cross section.

M＝-(E*I)/R

But, M: crooked moment of torsion

E: longitudinal elastic coefficient

I: 2 moments of torsion in cross section

R: radius of curvature

Below, in this example, owing to will wipe attachment on the secondary elastic scraper 51, can prevent that therefore the attachment on the secondary elastic scraper 51 from transferring on the elastic scraper 26 once more, and can keep the original function of elastic scraper 26 for a long time with the 3rd scraping plate part 27a of cockscomb 27.

In this example, owing to want the first scraping plate part 26c of elastic scraper 26 to tilt and contact with it with respect to secondary elastic scraper 51, when being contacted abreast with respect to secondary elastic scraper 51, the first scraping plate part 26c compares, the time that can make secondary elastic scraper 51 touch the first scraping plate part 26c keeps longlyer, and, by making secondary elastic scraper 51 crooked on the first scraping plate part 26c, can make the first scraping plate part 26c produce bigger frictional force, can remove the attachment on the first scraping plate part 26c of elastic scraper 26 thus fully.

About the 3rd scraping plate part 27a of cockscomb 27 and the relation of secondary elastic scraper 51, because compared with the above case, therefore the effect that situation is taken a turn for the worse is same, can remove fully by the attachment that the zone that contact with the 3rd scraping plate part 27a in secondary elastic scraper 51 top is interior.

As mentioned above, cleaning device of the present invention can be wiped the foreign matter that adheres on the nozzle face of ink gun really, and the structure small compact of this device.Therefore, the foreign matter that the ink-jet printer that is equipped with cleaning device of the present invention adheres on can the nozzle face owing to ink gun makes spray nozzle clogging, therefore can carry out high-quality printing.Therefore therefore, the space that is provided with of cleaning device needs only less just enoughly, can realize the ink-jet printer of small-sized compact conformation.

Claims (7)

1, a kind of cleaning device that is used to clean the nozzle face of ink gun, this device has aforementioned ink gun is fixed on securing rod on the desired location, the bar driving mechanism of latched position that this securing rod is moved to be fixed on the aforementioned ink gun and the unlocked position that leaves from this ink gun, it is characterized in that, the aforementioned rod driving mechanism has rotary driving source, gear train by this rotary driving source rotation, with respect to one in the gear that constitutes this gear train, connect with the thrust friction of setting, and the slip clutch control stick that becomes concentric to be provided with this gear, the rotation of this clutch operating lever is converted to second cam part that moves of aforementioned securing rod, be formed on the aforementioned clutch control stick, this clutch operating lever is remained in the rotation angle range of setting, and form the engaging piece of engagement with the aforesaid gears group.

2, a kind of cleaning device as claimed in claim 1, it is characterized in that, aforementioned second cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned securing rod reciprocating the 3rd cam region and both made aforementioned clutch control stick rotation between aforementioned latched position and aforementioned unlocked position, aforementioned securing rod still stops at the four-cam zone on the aforementioned unlocked position.

3, a kind of cleaning device as claimed in claim 2 is characterized in that, the aforementioned four-cam zone of aforementioned second cam part is that the circular-arc cam path at center defines by the pivot with aforementioned clutch operating lever.

4, a kind of cleaning device as claimed in claim 1, it is characterized in that, also have the wiper member that is used for the aforementioned nozzle face of wiping, support the cleaner rod of this wiper member, the aforementioned rod driving mechanism has first cam part that moves that the rotation of this clutch operating lever is converted to aforementioned cleaner rod, the rotation of aforementioned clutch control stick is converted to second cam part that moves of aforementioned securing rod, by this cleaner rod is moved, in the time of the retreating position that aforementioned wiper member is moved to leave from aforementioned nozzle face and the wiping position of the aforementioned nozzle face of erasable, make aforementioned securing rod move to the latched position of fixing aforementioned ink gun and the unlocked position that leaves from this ink gun.

5, a kind of cleaning device as claimed in claim 4, it is characterized in that, aforementioned first cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned cleaner rod reciprocating first cam region between aforementioned wiping position and aforementioned retreating position, both made the rotation of aforementioned clutch control stick, aforementioned cleaner rod still stops at second cam region on the aforementioned retreating position, aforementioned second cam part comprises the rotation that is accompanied by the aforementioned clutch control stick, make aforementioned securing rod reciprocating the 3rd cam region between aforementioned latched position and aforementioned unlocked position, both made the rotation of aforementioned clutch control stick, aforementioned securing rod still stops at the four-cam zone on the aforementioned unlocked position.

6, a kind of cleaning device as claimed in claim 5, it is characterized in that, during aforementioned first cam part is in aforementioned first cam region, aforementioned second cam part is in aforementioned four-cam zone, in case aforementioned first cam part moves to aforementioned second cam region, aforementioned second cam part moves to aforementioned the 3rd cam region.

7, a kind of ink-jet printer, it is characterized in that, have ink gun, be arranged on cleaning device locational as claimed in claim 1 beyond the zone of typewriting, make aforementioned ink gun along the reciprocating balladeur train of mobile route that comprises aforementioned typewriting zone and the position relative with aforementioned cleaning device with this ink gun.

Images