CN100421950C - Device for cleaning ink-jet head - Google Patents
Device for cleaning ink-jet head Download PDFInfo
- Publication number
- CN100421950C CN100421950C CNB200510113791XA CN200510113791A CN100421950C CN 100421950 C CN100421950 C CN 100421950C CN B200510113791X A CNB200510113791X A CN B200510113791XA CN 200510113791 A CN200510113791 A CN 200510113791A CN 100421950 C CN100421950 C CN 100421950C
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- cleaning
- pedestal
- ink
- printer
- jet head
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- Accessory Devices And Overall Control Thereof (AREA)
Abstract
A cleaning unit for the ink-jet head of a printer is composed of a base with a supporting part, a cleaning part with a slot and sleeving on said supporting part, and an axle rod linked with a drive module and with a couple unit arranged in said slot on cleaning part. When said axle rod is driven by drive module, the cleaning part is driven to move along said supporting part for removing the residual ink from ink-jet head.
Description
Technical field
The relevant a kind of device for cleaning ink-jet head of the present invention refers to a kind of device for cleaning ink-jet head that is applicable to printer especially.
Background technology
Along with the fast development with world-wide web popularized of PC, ink-jet printer has become product indispensable in the personal computer equipment in recent years.For general user, the ink-jet printer of a basic model just is enough to deal with the demand of various file printouts.Wherein, the structural design of the ink gun of ink cartridges is the important factor in order of printing of inkjet printer quality of concerning.In general inkjet technology, its be utilize ink gun with the ink spray printing in the ink-jet medium, paper and finishing for example, yet in ink jet printing process, can pile up easily around the nozzle of ink gun and use the remaining ink droplet in back and covered by dust or paper dirt, so will cause the ink gun spray orifice to block, and then have influence on print quality, cause that ink-jet is inhomogeneous, ink gun blocks or problem such as ink-jet color misalignment, greatly reduces the life-span of ink gun.Therefore for the cleaning that keeps ink gun prolonging the service life of ink gun, and keep print quality, what device for cleaning ink-jet head was natural is indispensable in an ink-jet printer device.
Though had device for cleaning ink-jet head in the existing printer, yet, most mechanism action complexity of existing device for cleaning ink-jet head and structure are meticulous, cause assembling to be difficult for, and production cost improves relatively, does not also have buffering effect in addition, makes contraposition inaccuracy when ink cartridges moves to device for cleaning ink-jet head, and influence cleaning effect, also may be because bump causes the damage of device for cleaning ink-jet head or printer.
Therefore, how to develop a kind of residual ink that cleans after the China ink head uses, block chance, increase a China ink life-span and promote the printing image quality to reduce a black spray orifice, and have Cushioning Design to help the device for cleaning ink-jet head of ink cartridges contraposition, real in pressing for the problem of solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of device for cleaning ink-jet head, can clean the residual ink after the China ink head uses, and blocks chance to reduce a black spray orifice, increases a China ink life-span and promotes the printing image quality, and have buffering to help the ink cartridges contraposition.
For reaching above-mentioned purpose, a kind of device for cleaning ink-jet head according to an aspect of the present invention, in order to clean an ink gun of a printer, this cleaning device comprises: a pedestal, it has a support component; One cleaning assemblies, it is placed on this support component of this pedestal and has a groove; And an axostylus axostyle, its interlock is in a driven unit and have a holding section, and this holding section is placed in this groove of this cleaning assemblies; When this driven unit drives this axostylus axostyle, drive this cleaning assemblies and on this support component of this pedestal, move.
According to conception of the present invention, wherein this pedestal also comprises a buffer element, and this buffer element is positioned at a side of this pedestal.
According to conception of the present invention, wherein this pedestal also comprises a fixed part, and this fixed part is the hook part that is extended out and had in outermost end an axostylus axostyle clamping by this pedestal.
According to conception of the present invention, this fixed part that wherein this pedestal and its comprised and this support component can be formed in one or be constituted in the mode of assembling.
According to conception of the present invention, wherein this support component is two stocks, in order to support this cleaning assemblies.
According to conception of the present invention, wherein this pedestal also comprises a projecting member, and this projecting member is to be positioned at a side of this pedestal and is a projection, with so that this pedestal be fixed on this printer.
According to conception of the present invention, wherein this cleaning assemblies also comprises plurality of fixed portion, and this plurality of fixed portion has the part of scraping storage tank respectively, in order to hold a plurality of parts of scraping.
According to conception of the present invention, wherein to scrape part made by rubber or plastic cement material for this of this cleaning assemblies.
According to conception of the present invention, wherein this cleaning assemblies also comprises a plurality of lugs, and these a plurality of lugs are positioned at the below of this cleaning assemblies, is stretched out and formed this groove between these a plurality of lugs by the bottom of this cleaning assemblies.
According to conception of the present invention, wherein this cleaning assemblies also comprises a wedge portion, and this wedge portion can be the concave surface funnel of a polygon cammed surface kenel, and by tilting to the center on every side, and there is a leadout hole this wedge portion concave surface center.
According to conception of the present invention, wherein this axostylus axostyle also comprises a fixed part, and it is positioned at the both sides of this axostylus axostyle, with this hook part clamping.
According to conception of the present invention, wherein this holding section of this axostylus axostyle is a ㄇ font crank.
According to conception of the present invention, wherein this driven unit comprises a driver part, a gear train and a stepper motor, moves in order to drive this cleaning device.
A kind of printer according to a further aspect of the invention, it comprises: an ink cartridges, it has an ink gun; One cleaning device is attached to the foreign material of this ink gun in order to cleaning, and this cleaning device comprises: a pedestal, and it has a support component; One cleaning assemblies, it is placed on this support component of this pedestal and has a groove; One axostylus axostyle, its interlock is in a driven unit and have a holding section, and this holding section is placed in this groove of this cleaning assemblies; When this driven unit drives this axostylus axostyle, drive this cleaning assemblies and on this support component of this pedestal, move.
Device for cleaning ink-jet head of the present invention is worked in coordination by the set groove of the holding section of axostylus axostyle and cleaning assemblies, after making that axostylus axostyle is driven by driven unit, can allow cleaning assemblies on the support component of pedestal, move back and forth back and forth, after cleaning assemblies moves to the ink cartridges below, each element that can effectively utilize cleaning assemblies is removed ink and dust remaining on the ink cartridges, is arranged at Buffer Unit on the pedestal in addition and can prevents that ink cartridges from being clashed into and clean contraposition.Composition the number of components of device for cleaning ink-jet head of the present invention is few, simple in structure, volume is little and contraposition is accurate and have suitable pooling feature.
Description of drawings
Fig. 1 is the structural representation of the device for cleaning ink-jet head of preferred embodiment of the present invention.
Fig. 2 is the structural representation that device for cleaning ink-jet head shown in Figure 1 is arranged at printer.
Fig. 3 (a) is the part-structure enlarged drawing of Fig. 2.
Fig. 3 (b) is the part-structure enlarged drawing of Fig. 2.
Fig. 4 (a) is the side view of Fig. 3 (b).
Fig. 4 (b) is the side view of Fig. 3 (b).
Fig. 4 (c) is the side view of Fig. 3 (b).
The structural representation of Fig. 5 when to be ink cartridges of the present invention carry out the preheating action before printing.
The specific embodiment
Some exemplary embodiments that embody feature of the present invention and advantage will be described in detail in the explanation of back segment.Be understood that the present invention can have various variations on different aspects, its neither departing from the scope of the present invention, and explanation wherein and to be shown in be when the usefulness that explain in essence, but not in order to restriction the present invention.
The present invention is a kind of device for cleaning ink-jet head, and it is applicable to the ink cartridges of printer, is attached to the foreign material of the ink gun under the ink cartridges in order to cleaning, for example: remaining ink droplet, dust or paper dirt etc.
See also Fig. 1, it is the structural representation of the device for cleaning ink-jet head of preferred embodiment of the present invention.As shown in Figure 1, device for cleaning ink-jet head 1 of the present invention comprises a pedestal 2, an axostylus axostyle 3 and a cleaning assemblies 4.Pedestal 2 has one first end points 21, one second end points 22, a buffer element 23, a fixed part 25, a support component 26 and a projecting member 27, wherein, first end points 21 is the places, the lower right corner that are positioned at pedestal 2, second end points 22 is positioned at the lower right-hand corner of pedestal 2, the profile of pedestal 2 can be designed to arc structure, being pedestal 2 in the side of first end points 21 for lower, then is higher in the side of second end points 22.Projecting member 27 is contiguous first end points 21, make pedestal 2 be fixed in (as shown in Figure 2) on the printer 6, wherein second end points 22 of pedestal 2 is unfixing with printer 6 (shown in Fig. 3 (a)), but and have a difference in height h between the printer, therefore, when ink cartridges 8 (as shown in Figure 2) when not starting as yet, pedestal 2 slightly is the state of inclination, buffer element 23 then is to be placed on the pedestal 2, mainly in order to prevent that ink cartridges 8 is subjected to the bump injury when moving to device for cleaning ink-jet head 1.
In embodiments of the invention, fixed part 25 is extended out by first end points 21 and second end points 22 respectively and has hook part 251 respectively in outermost end, in order to axostylus axostyle 3 trips thereon.Wherein, support component 26 can be two stocks, extends out from pedestal 2 in the same manner with fixed part 25, to support cleaning assemblies 4, makes cleaning assemblies 4 carry out the reciprocal action of level in the side thereon simultaneously.Certainly, in embodiment, pedestal 2 can be one-body molded or assemble with fixed part 25 and support component 26.
In addition, cleaning assemblies 4 comprises plurality of fixed portion 46, a plurality of part 41, wedge portion 42, leadout hole 43 and a plurality of lug 44 scraped.Wherein, the plurality of fixed portion 46 of cleaning assemblies 4 has the part of scraping storage tank 461 respectively, in order to hold a plurality of parts 41 of scraping, scraping part 41 can be in order to carry out cleaning action to ink gun 81 (seeing Fig. 4 (a)), fixed part 46 also can allow support component 26 pass wherein simultaneously, so that cleaning assemblies 4 is placed on the support component 26, and can makes at cleaning assemblies 4 and on support component 26, carry out reciprocal the moving of level.Wedge portion 42 can be the concave surface funnel of a polygon cammed surface kenel, and by tilting to the center on every side, and there is a leadout hole 43 wedge portion 42 concave surface centers.A plurality of lugs 44 then are the belows that is positioned at cleaning assemblies 4, stretched out and formed a ㄇ font groove 45 between lug 44 by the bottom of cleaning assemblies 4.Wherein, cleaning device 4 and fixed part 46 and lug 44 can be formed in one or constituted in the mode of assembling, part 41 can be rubber or plastic cement material is made and scrape.
In addition, driver part 51 can be a driven gear, the center is to articulate with the end points of axostylus axostyle 3, driver part 51 can drive axostylus axostyle 3 rotations, so that driving cleaning assemblies 4, the holding section 31 of axostylus axostyle 3 on the support component of pedestal 2, carries out reciprocal the moving of level, and in time the ink gun 81 of ink cartridges 8 is struck off cleaning, to reach the cleaning effect of ink cartridges 8.
See also Fig. 2, it is the structural representation that the embodiment of device for cleaning ink-jet head shown in Figure 1 is arranged at printer, as shown in the figure, printer 6 comprises an ink box holder 7, be mainly used to carry a plurality of ink cartridges 8, and the bottom of ink cartridges 8 is respectively arranged with an ink gun 81, and device for cleaning ink-jet head 1 then is arranged at a side of printer 6, and it is that projecting member 27 (as shown in Figure 1) by first end points 21 of contiguous pedestal 2 fixes on printer 6.Driven unit comprises fixed part 51, printer gear train 52 and stepper motor 53, wherein fixed part 51 intermeshes with the gear train 52 of printer 6, and drive running by the stepper motor 53 of printer 6, therefore, when the ink gun 81 of ink cartridges 8 moves to the top of pedestal 2 and after finish Buffer Unit 23 bufferings and location, device for cleaning ink-jet head 1 rotates the stepper motor 53 driven gear groups 52 of corresponding printer 6 and fixed part 51, and then the ink gun 81 that drives the 4 pairs of ink cartridges 8 of cleaning assemblies on the holding section 31 that is sticked in axostylus axostyle 3 is implemented the cleaning effect that strikes off.
See also Fig. 3 (a), it is the part-structure enlarged drawing of Fig. 2.As shown in the figure, owing to have a difference in height h between second end points 22 of pedestal 2 and the bottom of printer 6, therefore do not locate when finishing when the ink gun 81 of ink cartridges 8 moves to the top of pedestal 2 and cushion without Buffer Unit 3, whole device for cleaning ink-jet head 1 is the state that presents an inclination.Otherwise; when ink cartridges 8 under the protection of the guiding of pedestal 2 and buffer element 23 anticollision measures; to make the bottom of second end points 22 and printer 6 of pedestal 2 become with the bottom of printer 6 and contact by having difference in height h; even pedestal 2 is ajusted and is made whole device for cleaning ink-jet head 1 keep a level (shown in Fig. 3 (b)); at this moment; stepper motor 53 can be under the driving of the microcontroller (not shown) of printer 6 inside driven gear group 52 and driver part 51 rotate; and then make the holding section 31 of axostylus axostyle 3 rotate; thus; just can drive cleaning assemblies 4 moves horizontally towards pedestal 2 directions on the support component 26 of pedestal 2; carry out cleaning action with ink gun 81, and can come back rotation repeatedly to strengthen cleaning to ink gun 81 to ink cartridges 8.
Please consult Fig. 4 (a) again, it is the side view that shows Fig. 3 (b), when the ink gun 81 of ink cartridges 8 moves to the top of pedestal 2, driver part 51 can drive axostylus axostyle 3 and rotate, and the holding section 31 that is sticked in the groove 45 of cleaning assemblies 4 also can be subjected to the drive of axostylus axostyle 3 and rotation in groove 45, and then make cleaning assemblies 4 be able on the support component 26 of pedestal 2, move horizontally.Not not hard to imaginely, when holding section 31 turns to peak by intermediate point, cleaning assemblies 4 will be driven and move towards the direction of pedestal 2 and be positioned at the below (shown in Fig. 4 (b)) of ink gun 81, and when turning to intermediate point again by peak in the holding section 31, cleaning assemblies 4 just can be driven and be left the below (shown in Fig. 4 (c)) of ink gun 81, so rotation of 31 and moving up and down by the holding section, cleaning assemblies 4 just can level move on the support component 26 of pedestal 2 back and forth repeatedly, and cleaning assemblies 4 just can in time strike off the foreign material that are adhered on the ink gun 81, and removed residual ink after ink gun 81 uses, reduce ink gun 81 spray orifices and block, just can promote print quality and prolong effect such as 81 service lifes of ink gun.
Please consult Fig. 5 again, it is the structural representation that shows when ink cartridges 8 of the present invention is carried out the preheating action before printing, when ink cartridges 8 is carried out the preheating action before printing, the wedge portion 42 that its ink gun 81 can correspond to cleaning device carries out the action (as shown in Figure 5) of the pre-ink droplets of a trace, and ejection drip can be along the incline direction of wedge portion 42 in the ink droplet of wedge portion 42, by compiling to the center on every side, discharge via the leadout hole at wedge portion 42 centers.The bottom of wedge portion also can comprise a blotting paper (not shown), in order to the ink droplet of absorb discharging, so can prevent the residual ink after ink gun 81 uses to block spray orifice, causes problems such as print quality is not good.
In sum, device for cleaning ink-jet head of the present invention is working in coordination by the set groove of the holding section of axostylus axostyle and cleaning assemblies, after making that axostylus axostyle is driven by driven unit, can allow cleaning assemblies on the support component of pedestal, move back and forth back and forth, after cleaning assemblies moves to the ink cartridges below, utilize each element of cleaning assemblies to remove ink and dust remaining on the ink cartridges again.In addition, also can be provided with buffer element in the embodiments of the invention ordinatedly and prevent that ink cartridges from being clashed into and clean contraposition, also has the function of buffering ink cartridges bump and accurately with the ink cartridges contraposition, simultaneously can utilize the existing gear drive of printer to drive cleaning assemblies again and move, not only form the effect that member is simple and can reach the reduction manufacturing cost and promote product competitiveness.By above explanation as can be known, the designed device for cleaning ink-jet head of the present invention is to make with the designing institute that simply and not takes cost, and the efficient residual ink of reaching after the cleaning ink gun uses, reduce a China ink spray orifice and block chance, also can prolong simultaneously the service life of ink gun, promote and print image quality.Therefore, device for cleaning ink-jet head of the present invention has the value of industry.
Claims (26)
1. device for cleaning ink-jet head, in order to clean the ink gun of a printer, this cleaning device comprises:
One pedestal, it has a support component;
One cleaning assemblies, it is placed on this support component of this pedestal and has a groove; And
One axostylus axostyle, its interlock is in a driven unit and have a holding section, and this holding section is placed in this groove of this cleaning assemblies;
When this driven unit drives this axostylus axostyle, drive this cleaning assemblies and on this support component of this pedestal, move.
2. device for cleaning ink-jet head as claimed in claim 1 is characterized in that this pedestal also comprises a buffer element, and this buffer element is a side that is positioned at this pedestal.
3. device for cleaning ink-jet head as claimed in claim 1 is characterized in that this pedestal also comprises a fixed part, this fixed part be by this pedestal extend out and in outermost end have one with the hook part of this axostylus axostyle clamping.
4. device for cleaning ink-jet head as claimed in claim 3, it is characterized in that this fixed part that this pedestal and its comprises and this support component can be formed in one or with the assembling mode constituted.
5. device for cleaning ink-jet head as claimed in claim 1 is characterized in that this support component is two stocks, in order to support this cleaning assemblies.
6. device for cleaning ink-jet head as claimed in claim 1 is characterized in that this pedestal also comprises a projecting member, and this projecting member is to be positioned at a side of this pedestal and is a projection, with so that this pedestal be fixed on this printer.
7. device for cleaning ink-jet head as claimed in claim 1 is characterized in that this cleaning assemblies also comprises plurality of fixed portion, and this plurality of fixed portion has the part of scraping storage tank respectively, in order to hold a plurality of parts of scraping.
8. device for cleaning ink-jet head as claimed in claim 7, this that it is characterized in that this cleaning assemblies scraped part can be made by rubber or plastic cement material.
9. device for cleaning ink-jet head as claimed in claim 1, it is characterized in that this cleaning assemblies also comprises a plurality of lugs, these a plurality of lugs are positioned at the below of this cleaning assemblies, stretched out and formed this groove between these a plurality of lugs by the bottom of this cleaning assemblies.
10. device for cleaning ink-jet head as claimed in claim 1, it is characterized in that this cleaning assemblies also comprises a wedge portion, this wedge portion can be the concave surface funnel of a polygon cammed surface kenel, and by tilting to the center on every side, and there is a leadout hole this wedge portion concave surface center.
11. device for cleaning ink-jet head as claimed in claim 3 is characterized in that this axostylus axostyle more can comprise a fixed part, it is the both sides that are positioned at this axostylus axostyle, with this hook part clamping.
12. device for cleaning ink-jet head as claimed in claim 1, this holding section that it is characterized in that this axostylus axostyle are ㄇ font cranks.
13. device for cleaning ink-jet head as claimed in claim 1, it is characterized in that this driven unit comprise a driver part, a gear train with and/or a stepper motor, move in order to drive this cleaning device.
14. a printer, it comprises:
One ink cartridges, it has an ink gun;
One cleaning device is attached to the foreign material of this ink gun in order to cleaning, and this cleaning device comprises:
One pedestal, it has a support component;
One cleaning assemblies, it is placed on this support component of this pedestal and has a groove;
One axostylus axostyle, its interlock is in a driven unit and have a holding section, and this holding section is placed in this groove of this cleaning assemblies;
When this driven unit drives this axostylus axostyle, drive this cleaning assemblies and on this support component of this pedestal, move.
15. printer as claimed in claim 14 is characterized in that this pedestal also comprises a buffer element, this buffer element is a side that is positioned at this pedestal.
16. printer as claimed in claim 14 is characterized in that this pedestal also comprises a fixed part, this fixed part be by this pedestal extend out and in outermost end have one with the hook part of this axostylus axostyle clamping.
17. printer as claimed in claim 16, it is characterized in that this fixed part that this pedestal and its comprises and this support component can be formed in one or with the assembling mode constituted.
18. printer as claimed in claim 14 is characterized in that this support component is two stocks, in order to support this cleaning assemblies.
19. printer as claimed in claim 14 is characterized in that this pedestal also comprises a projecting member, this projecting member is to be positioned at a side of this pedestal and is a projection, with so that this pedestal be fixed on this printer.
20. printer as claimed in claim 14 is characterized in that this cleaning assemblies also comprises plurality of fixed portion, this plurality of fixed portion has the part of scraping storage tank respectively, in order to hold a plurality of parts of scraping.
Part can be rubber or plastic cement material is made 21. printer as claimed in claim 20, this that it is characterized in that this cleaning assemblies are scraped.
22. printer as claimed in claim 14 is characterized in that this cleaning assemblies also comprises a plurality of lugs, these a plurality of lugs are positioned at the below of this cleaning assemblies, stretched out and formed this groove between these a plurality of lugs by the bottom of this cleaning assemblies.
23. printer as claimed in claim 14 is characterized in that this cleaning assemblies also comprises a wedge portion, this wedge portion can be the concave surface funnel of a polygon cammed surface kenel, and by tilting to the center on every side, and there is a leadout hole this wedge portion concave surface center.
24. printer as claimed in claim 16 is characterized in that this axostylus axostyle more can comprise a fixed part, it is the both sides that are positioned at this axostylus axostyle, with this hook part clamping.
25. printer as claimed in claim 14, this holding section that it is characterized in that this axostylus axostyle are ㄇ font cranks.
26. printer as claimed in claim 14, it is characterized in that this driven unit comprise a driver part, a gear train with and/or a stepper motor, move in order to drive this cleaning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510113791XA CN100421950C (en) | 2005-10-10 | 2005-10-10 | Device for cleaning ink-jet head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510113791XA CN100421950C (en) | 2005-10-10 | 2005-10-10 | Device for cleaning ink-jet head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1948011A CN1948011A (en) | 2007-04-18 |
| CN100421950C true CN100421950C (en) | 2008-10-01 |
Family
ID=38017676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510113791XA Expired - Fee Related CN100421950C (en) | 2005-10-10 | 2005-10-10 | Device for cleaning ink-jet head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100421950C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857000B (en) * | 2018-08-23 | 2021-03-09 | 东友科技股份有限公司 | Printer cleaning system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4571601A (en) * | 1984-02-03 | 1986-02-18 | Nec Corporation | Ink jet printer having an eccentric head guide shaft for cleaning and sealing nozzle surface |
| CN1241490A (en) * | 1998-07-15 | 2000-01-19 | 精工爱普生株式会社 | Ink jet recording apparatus |
| JP2001138545A (en) * | 1999-11-17 | 2001-05-22 | Seiko Epson Corp | Ink jet recording apparatus and cleaning control method of recording head therein |
| CN1517217A (en) * | 2003-01-17 | 2004-08-04 | ���ǵ�����ʽ���� | Maintaining equipment for ink-jet printer |
-
2005
- 2005-10-10 CN CNB200510113791XA patent/CN100421950C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4571601A (en) * | 1984-02-03 | 1986-02-18 | Nec Corporation | Ink jet printer having an eccentric head guide shaft for cleaning and sealing nozzle surface |
| CN1241490A (en) * | 1998-07-15 | 2000-01-19 | 精工爱普生株式会社 | Ink jet recording apparatus |
| JP2001138545A (en) * | 1999-11-17 | 2001-05-22 | Seiko Epson Corp | Ink jet recording apparatus and cleaning control method of recording head therein |
| CN1517217A (en) * | 2003-01-17 | 2004-08-04 | ���ǵ�����ʽ���� | Maintaining equipment for ink-jet printer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1948011A (en) | 2007-04-18 |
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