CN105818536A - Print head and ink-jet printing device - Google Patents
Print head and ink-jet printing device Download PDFInfo
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- CN105818536A CN105818536A CN201610174389.0A CN201610174389A CN105818536A CN 105818536 A CN105818536 A CN 105818536A CN 201610174389 A CN201610174389 A CN 201610174389A CN 105818536 A CN105818536 A CN 105818536A
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- ink
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- printhead
- ink nozzle
- injection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/24—Case-shift mechanisms; Fount-change arrangements
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Ink Jet (AREA)
Abstract
The present invention provides a print head. A first ink nozzle array and a second ink nozzle array are arranged at the print head along a second direction perpendicular to a first direction, each ink nozzle array jets ink with at least two colors, and the color of the ink jetted by the first ink nozzle array is lighter than the color of the ink jetted by the second ink nozzle array. The print head jets a plurality of kinds of ink, and when a plurality of kinds of ink is employed to perform bidirectional printing, the print head and ink-jet printing devices are able to eliminate the color spots generated by different superposed sequence of the bidirectional printing ink whatever the printing is performed for odd-number times or even-number times while the printing speed is not reduced.
Description
Technical field
The present invention relates to inkjet printing field, in particular relate to a kind of printhead that can reduce bi-directional printing mottle and use the inkjet-printing device of this printhead.
Background technology
Inkjet-printing device by printhead injection ink droplet on print media to form image or word, due to its low cost image that high-quality can be printed, be widely used in recent years.For pursuing higher print performance, the typical performance of print performance is image quality and print speed.The principal element of decision image quality is the color category number of ink, usually, the most image qualities of color category of ink the highest, prior art common are, including four color ink-jet printers of cyan, magenta, yellow and black with include the six color ink jet printer of cyan, nattierblue, magenta, light magenta, yellow and black.The raising prior art of the print speed in print performance is to be improved by bi-directional printing.That is, printed by the scanning in the past direction of printhead, then carry out the paper feeding of scheduled volume, the movement of the printhead going back to direction behind is also carried out print scanned.According to this printing type, with carry out printing in the scanning in direction and compared with not carrying out the unidirectional printing that prints in the movement return the printhead of return in direction, it is achieved that the print speed of twice or production capacity.On the other hand, size about the region that the scanning of printhead is completed, it is known that completed to be equivalent to the so-called Multiple-Scan printing that the so-called single pass of the scanning area of the outlet arrangement width of printhead prints, prints to carry out the Multiple-Scan of paper feeding to complete therebetween by single pass.Above-mentioned single pass prints and Multiple-Scan is printed and can also be performed by above-mentioned bi-directional printing mode, when performing single pass printing by bi-directional printing mode, it is possible to maximally improve print speed or production capacity.
Bi-directional printing mode is an effective manner for the raising of print speed etc..But, on the other hand, it is known that: producing color distortion in each scanning area, image occurs mottle or registration deviation on the whole.This phenomenon be because of bi-directional printing toward direction the most different with the offer of each color ink returned in direction order caused by.That is, in printing equipment, printhead ink nozzle row are generally aligned on its scanning direction.In this case, owing to it arranges, in the relation toward the offer order changeabout between scanning and multiple scanning.
When pixel overlap is sprayed the point that multiple ink forms predetermined color, in injection order, the mass colour being first injected into print media carries out stronger colour developing.This is because, the material closer to surface of print media is dyeed by the ink being first injected into print media, and the most injected ink is difficult to the material on the surface to print media and dyes, and deeper permeates on the thickness direction of print media and fix.
Japanese patent application JP2000318189 discloses and a kind of eliminates owing to the injection order of ink results in the structure of mottle, that is: the ink to each color arranges 2 ink nozzle row, and the axle orthogonal with scanning direction configures every 2 ink nozzles row symmetrically, as described in Figure 1, the ink nozzle row of cyan ink c1 and c2, the ink nozzle row of magenta ink m1 and m2, the ink nozzle row of yellow ink y1 and y2 orthogonal in the scanning direction of printhead axis of symmetry lateral symmetry it are respectively configured.In this structure, carry out ink-jet in the past direction of scanning by the order of c1, m1, y1, y2, m2, c2, carry out ink-jet going back to direction by the order of c2, m2, y2, y1, m1, c1.Thus, it is possible to injection order or the overlapped sequential of ink are set as that identical order is to reduce bi-directional printing due to the mottle of the inconsistent generation of overlay order of ink in each shuttle-scanning.In addition, somebody proposes such structure, that is: the ink nozzle with the cyan shown in Fig. 1, magenta and yellow arranges the ink nozzle similarly, for black ink and arranges the configuration being also carried out symmetry, such as configures according to the order of k1, c1, m1, y1, y2, m2, c2, k2.This structure must be provided for, respectively to the confession liquid chamber of ink nozzle row k1, k2 supply ink, thus causing the increase of the size of printhead.
Summary of the invention
The problem existed for prior art, it is an object of the invention to provide a kind of in the structure using multiple ink to carry out bi-directional printing, it is possible to reduce the size of printhead, carries out reducing printhead and the inkjet-printing device that bi-directional printing mottle phenomenon produces.
For achieving the above object, the present invention proposes a kind of printhead, it is characterized in that: described printhead arranges along the second direction arrangement first row ink nozzle row and second row ink nozzle being perpendicular to first direction, and often row's ink nozzle arranges the ink of injection at least two color, the color of the ink of described first row ink nozzle row injection sprays the of light color of ink than described second row ink nozzle row.
In above-mentioned printhead, along the direction of feed of print media, namely the most described first row ink nozzle row are arranged on the front end of described second row ink nozzle row.
In above-mentioned printhead, described first row ink nozzle row and described second row ink nozzle row are arranged along the second direction predetermined amounts interval being perpendicular to described first direction.
Another object of the present invention is to propose a kind of printhead, it is characterized in that: described printhead includes two groups of symmetrically arranged ink nozzle arrays, described print head array arranges along the second direction arrangement first row ink nozzle row and second row ink nozzle being perpendicular to first direction, and often row's ink nozzle arranges the ink of injection at least two color, the color of the ink of described first row ink nozzle row injection sprays the of light color of ink than described second row ink nozzle row.
In above-mentioned printhead, described first row ink nozzle row and described second row ink nozzle row are arranged along the second direction predetermined amounts interval being perpendicular to described first direction.
In above-mentioned printhead, described first row ink nozzle row and described second row ink nozzle row are spaced the integral multiple of printhead ink nozzle spacing along the second direction being perpendicular to described first direction.
In above-mentioned printhead, along the direction of feed of print media, namely the most described first row ink nozzle row are arranged on the front end of described second row ink nozzle row.
In above-mentioned printhead, ink nozzle row on described printhead are configured to, wherein first row ink nozzle arranges along described first direction configuration injection the first yellow ink, the first cyan ink and the second cyan ink, the ink nozzle row of the second yellow ink, and second row ink nozzle arranges along described first direction configuration injection the first magenta ink, the first black ink and the second black ink, the ink nozzle row of the second magenta ink.
In above-mentioned printhead, ink nozzle row on described printhead are configured to, wherein first row ink nozzle arranges along described first direction configuration injection yellow ink, the first light greenish blue color ink, the first cyan ink and the second cyan ink, the second light greenish blue color ink, the ink nozzle row of the second yellow ink, and second row ink nozzle arranges along described first direction configuration injection the first light magenta ink, the first magenta ink, the first black ink and the second black ink, the second magenta ink, the ink nozzle row of the second light magenta ink.
The a further object of the present invention is to propose a kind of inkjet-printing device, including printing dolly, print dolly to move reciprocatingly in the first direction, on dolly, the printhead for spraying ink droplet is installed printing, print dolly and during moving back and forth, from the ink nozzle of printhead, spray ink droplet on print media to form image or word, it is characterised in that: described printhead is above-mentioned printhead.
Accompanying drawing explanation
Fig. 1 is that the ink-jet of printhead spraying multiple ink of prior art is arranged in order figure；
The structural representation of the inkjet-printing device of Fig. 2 one embodiment of the present of invention；
Fig. 3 is another structural representation of the inkjet-printing device of one embodiment of the present of invention；
Fig. 4 is the precedence diagram of the ink nozzle array in the printhead in one embodiment of the present of invention；
Fig. 5 is the structural representation of the ink nozzle row of the printhead in one embodiment of the present of invention；
Fig. 6 is the injection order figure that printhead shown in Fig. 4 carries out ink droplet during bi-directional printing；
Fig. 7 is the precedence diagram of the ink nozzle array in the printhead in an alternative embodiment of the invention；
Fig. 8 is the precedence diagram of the ink nozzle array in the printhead in another embodiment of the present invention；
Fig. 9 is the structural representation of the ink nozzle row of the printhead in another embodiment of the present invention；
Figure 10 is that printhead shown in Fig. 8 carries out odd number injection order figure of ink droplet in time printing；
Figure 11 is that printhead shown in Fig. 8 carries out the injection order figure of ink droplet when even passes prints；
Figure 12 be the present invention a further embodiment in the configuration figure of printhead ink nozzle.
Detailed description of the invention
Embodiments of the present invention are explained below by the structure etc. that the inkjet-printing device in one embodiment of the present of invention and printhead are combined.
As shown in Figures 2 and 3, the inkjet-printing device of the present invention includes printing dolly 2, arranges on dolly 2 one for installing the base plate 2 of printhead printing, and installs the printhead of ink for spraying at least one color on a base plate 2.Print dolly 2 to be arranged on guide rail beam 3, under the driving driving motor 6, print dolly 2 move reciprocatingly along the guide rail 4 being arranged on guide rail beam 3 (main scanning direction) in the first direction, printing dolly 2 to be connected with driving motor 6 by the combination of belt belt wheel, the driving motor 6 in the present invention selects servomotor.Print dolly 2, at rear side, one slide block (not shown) is installed, realize printing the reciprocating motion of dolly 2 by slide block and track combination.Also installing a grating scale 5 on guide rail beam 3, be provided with grating read head printing on dolly 2, grating read head coordinates with grating scale 5, determines printhead ink jetting position in a first direction by grating scale 5.Also setting up on dolly 2 for the assistant print cartridges 8 of printhead ink supply printing, wherein the quantity of assistant print cartridges 8 is consistent with needing the number of colours spraying ink, and an assistant print cartridges 8 can be at least one printhead ink supply of injection same color ink.Print media 7 is arranged on the underface printing dolly 2, and the inkjet-printing device in the present invention can be Reel-to-reel type inkjet-printing device, and print media 7 does step motion in the driving (sub scanning direction) in a second direction of pressure roller 9.
The inkjet-printing device of the present invention can also be flatbed inkjet printing equipment, the movement relation printing dolly and print media in flatbed inkjet printing equipment can have two kinds, it is respectively, print dolly to move reciprocatingly in the first direction, print dolly simultaneously and do step motion in a second direction, print media moves the most up and down, and print media keeps transfixion in horizontal plane；Another way is, prints dolly and moves reciprocatingly in the first direction, and print media does step motion in a second direction, and print media vertically moves up and down.
The ink of the four kinds of colors of use in the inkjet-printing device of an embodiment of the invention, is magenta, cyan, yellow and black respectively.
Fig. 4 is the figure that puts in order of the printhead being loaded in inkjet-printing device of the present invention from the viewing of print media side.As shown in the drawing, the printhead of present embodiment includes first row ink nozzle row and the second row ink nozzle row of injection dark colour ink spraying light colour ink, and first row ink nozzle row and second row ink nozzle row (ink nozzle row) are arranged at sub scanning direction with staggering scheduled volume.As shown in Figure 4, in the first direction, first row ink nozzle row are configured to spray the printhead 11Y of yellow ink1Printhead 12C with injection cyan1；Second row ink nozzle row are configured to spray the printhead 13M of magenta ink1Printhead 14K with injection black ink1.In the first direction, be arrangeding in parallel between the ink nozzle row in the printhead in the present invention, the spacing between ink nozzle row is equal, and the spacing between ink nozzle row is preferably the integral multiple of printhead ink nozzle spacing.
Fig. 5 is the schematic diagram of the ink nozzle of the printhead in one embodiment of the invention, and the printhead of the present invention is provided with multiple ink nozzle, and the distance between each ink nozzle is equal.As sprayed the printhead 11Y of yellow ink1On be provided with injection yellow ink ink nozzle 110, injection cyan printhead 12C1On be provided with injection cyan ink nozzle 120, injection magenta ink printhead 13M1On be provided with injection magenta ink ink nozzle 130, injection black ink printhead 14K1On be provided with injection black ink ink nozzle 140.First row ink nozzle row and second row ink nozzle in the present invention arrange the integral multiple that distance is printhead ink nozzle spacing gone up in a second direction and (assume that printhead ink nozzle spacing is d, then last ink nozzle distance first ink nozzle of second row ink nozzle row of first row ink nozzle row is nd in the distance of second direction, and wherein n is integer).
As shown in Figure 6, the printhead of the present invention ink-jet order in bi-directional printing, as the blueness (C+M) obtained by use cyan ink and the combination of magenta ink, in forward prints and reversely prints, use ink nozzle row C and ink nozzle row M, owing to ink nozzle row M is arranged on the front end of ink nozzle row C, therefore when using cyan ink and magenta ink to form blueness (C+M), print and in reverse print procedure at forward, the injection order of ink droplet is all first to spray injection cyan ink (M-> C) after magenta ink, ink droplet overlay order is identical without producing mottle phenomenon.The printhead combination of the present invention may be used for single pass printing model and changeable printing model.
Similarly, as the redness (Y+M) obtained by use yellow ink and the combination of magenta ink, in forward prints and reversely prints, use ink nozzle row Y and ink nozzle row M, owing to ink nozzle row M is arranged on the front end of ink nozzle row Y, therefore when using yellow ink and magenta ink to form blueness (Y+M), print and in reverse print procedure at forward, the injection order of ink droplet is all first to spray injection yellow ink (M-> Y) after magenta ink, and ink droplet overlay order is identical without producing mottle phenomenon.
Same, as by use obtained by the combination of cyan ink and yellow ink green (C+Y), use ink nozzle row C and ink nozzle row Y, when forward prints, injection order be that first shower nozzle yellow is black, then sprays cyan ink；When reversely printing, injection order is for first spraying cyan ink, and then injection yellow is black.It addition, when being formed color by three kinds of ink droplet superpositions of cyan ink, magenta ink and yellow ink, the overlay order of ink droplet is, forward first sprays magenta ink, then superposition yellow ink, last superposition cyan ink when printing；Magenta ink, then superposition cyan ink, last superposition yellow ink is first sprayed when reversely printing.Owing to cyan ink and yellow ink are light color ink, the mottle printing generations different with reverse printed dot overlay order at forward is inconspicuous, and the overlay order of other color ink droplet is identical during forward prints and reversely prints, therefore when the printhead combination using the present invention carries out two-way inkjet printing, the aberration that forward prints and reversely prints is inconspicuous, and the vision of people is the most easy to identify.
As it is shown in fig. 7, the printhead of the present invention can also spray the ink of six kinds of colors, i.e. increase the ink of light magenta and the ink of nattierblue, i.e. first row ink nozzle row are configured to first row ink nozzle row and are configured to spray the printhead Y of yellow ink1, injection light cyan ink printhead Lc1、The printhead C of injection cyan1, second row ink nozzle row are configured to spray the printhead Lm of light magenta ink1, injection magenta ink printhead M1, injection black ink printhead K1。
Fig. 8 be another detailed description of the invention of the present invention printhead in ink nozzle row the figure that puts in order.As shown in the drawing, the printhead of present embodiment includes first row ink nozzle row and the second row ink nozzle row of injection dark colour ink spraying light colour ink, and first row ink nozzle row and second row ink nozzle arrange in spray the color sequences of ink droplet and be symmetrical arranged.First row ink nozzle row and second row ink nozzle row (ink nozzle row) are arranged at sub scanning direction with staggering scheduled volume.As it is shown in fig. 7, in the first direction, first row ink nozzle row are configured to spray the printhead 11Y of yellow ink1Printhead 12C with injection cyan1, and the printhead 21C of symmetrically arranged injection cyan2Printhead 22Y with injection yellow ink2；Second row ink nozzle row are configured to spray the printhead 13M of magenta ink1Printhead 14K with injection black ink1Printhead 23K with symmetrically arranged injection black ink2Printhead 24M with injection magenta ink2.In the first direction, all be arrangeding in parallel between the ink nozzle row in the printhead in the present invention, the spacing between ink nozzle row is equal, and the spacing between ink nozzle row is preferably the integral multiple of printhead ink nozzle spacing.
Fig. 9 is the schematic diagram of the ink nozzle of the printhead in another embodiment of the present invention, and the printhead of the present invention is provided with multiple ink nozzle, and the distance between each ink nozzle is equal.As sprayed the printhead 11Y of yellow ink1And 22Y2On be provided with injection yellow ink ink nozzle 110 and 220, injection cyan printhead 11C1And 21C2On be provided with injection cyan ink nozzle 120 and 210, injection magenta ink printhead 13M1And 24M2On be provided with injection magenta ink ink nozzle 130 and 240, injection black ink printhead 14K1And 23K2On be provided with injection black ink ink nozzle 140 and 230.First row ink nozzle row and second row ink nozzle in the present invention arrange the integral multiple that distance is printhead ink nozzle spacing gone up in a second direction and (assume that printhead ink nozzle spacing is d, then last ink nozzle distance first ink nozzle of second row ink nozzle row of first row ink nozzle row is nd in the distance of second direction, and wherein n is integer).As can be seen from Figure 10 when the printhead combination using the present invention carries out odd number all over printing, each overlay order all over (PASS) ink droplet is MKKMYCCY, it is possible to eliminate the mottle phenomenon produced due to bi-directional printing due to ink droplet overlay order difference.As can be seen from Figure 11 when the printhead combination using the present invention carries out even passes printing, each overlay order all over (PASS) ink droplet is MKKMMKKMYCCYYCCY, it is possible to eliminate the mottle phenomenon produced due to bi-directional printing due to ink droplet overlay order difference.
As shown in figure 12, the printhead of the present invention can also spray the ink of six kinds of colors, i.e. increases the ink of light magenta and the ink of nattierblue, i.e. first row ink nozzle row are configured to first row ink nozzle row and are configured to spray the printhead Y of yellow ink1, injection light cyan ink printhead Lc1、The printhead C of injection cyan1Printhead C with the injection cyan of balanced configuration2, injection light cyan ink printhead Lc2, injection yellow ink printhead Y1；Second row ink nozzle row are configured to spray the printhead Lm of light magenta ink1, injection magenta ink printhead M1, injection black ink printhead K1Printhead K with the injection black ink of balanced configuration2, injection magenta ink printhead M2, spray the printhead Lm of light magenta ink2。
Printhead in the present invention is it can also be provided that the printhead that is made up of two row ink nozzles, two row ink nozzles can spray same chromatic ink can be to spray different inks respectively, when two row ink nozzles spray same chromatic ink, 1/2nd ink nozzle spacing that misplace between two row ink nozzles are to improve ink droplet coverage rate on the print medium；Use four printheads to be respectively used to spray cyan ink, yellow ink, magenta ink and black ink when four colors print.When row ink nozzle is respectively used to spray different color ink, two row ink nozzle parallel alignment are arranged, and use two printheads, one of them printhead to be used for spraying cyan ink and yellow ink when four colors print, and another printhead is used for spraying magenta ink and black ink.
The printhead of the present invention can spray multiple ink, when using multiple ink to carry out bi-directional printing, no matter use odd number all over printing or using even passes printing can well eliminate the mottle produced due to bi-directional printing ink overlay order difference while not reducing print speed.
Preferred implementation has been described in detail by the present invention.Without departing from the scope of the present invention, in terms of its range, can change and revise, this is apparent to those of ordinary skill in the art.Therefore, in all above-mentioned changes and amendment each fall within the scope of the claims of the present invention.
Claims (8)
1. a printhead, it is characterized in that: described printhead arranges along the second direction arrangement first row ink nozzle row and second row ink nozzle being perpendicular to first direction, and often row's ink nozzle arranges the ink of injection at least two color, the color of the ink of described first row ink nozzle row injection sprays the of light color of ink than described second row ink nozzle row.
Printhead the most according to claim 1, it is characterised in that: along the direction of feed of print media, namely the most described first row ink nozzle row are arranged on the front end of described second row ink nozzle row.
Printhead the most according to claim 1, it is characterised in that: described first row ink nozzle row and described second row ink nozzle row are arranged along the second direction predetermined amounts interval being perpendicular to described first direction.
Printhead the most according to claim 1, it is characterised in that: described first row ink nozzle row and described second row ink nozzle row are spaced the integral multiple of printhead ink nozzle spacing along the second direction being perpendicular to described first direction.
Printhead the most according to claim 1, it is characterised in that: the color of the first row ink nozzle row injection ink in described printhead is symmetrical arranged, and the color of described second row ink nozzle row injection ink is symmetrical arranged.
Printhead the most according to claim 1, it is characterized in that: the ink nozzle row on described printhead are configured to, wherein first row ink nozzle arranges along described first direction configuration injection the first yellow ink, the first cyan ink and the second cyan ink, the ink nozzle row of the second yellow ink, and second row ink nozzle arranges along described first direction configuration injection the first magenta ink, the first black ink and the second black ink, the ink nozzle row of the second magenta ink.
Printhead the most according to claim 1, it is characterized in that: the ink nozzle row on described printhead are configured to, wherein first row ink nozzle arranges along described first direction configuration injection yellow ink, the first light greenish blue color ink, the first cyan ink and the second cyan ink, the second light greenish blue color ink, the ink nozzle row of the second yellow ink, and second row ink nozzle arranges along described first direction configuration injection the first light magenta ink, the first magenta ink, the first black ink and the second black ink, the second magenta ink, the ink nozzle row of the second light magenta ink.
8. an inkjet-printing device, including printing dolly, print dolly to move reciprocatingly in the first direction, on dolly, the printhead for spraying ink droplet is installed printing, print dolly and during moving back and forth, from the ink nozzle of printhead, spray ink droplet on print media to form image or word, it is characterised in that: described printhead is the printhead described in claim 1 to 7 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610174389.0A CN105818536A (en) | 2016-03-25 | 2016-03-25 | Print head and ink-jet printing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610174389.0A CN105818536A (en) | 2016-03-25 | 2016-03-25 | Print head and ink-jet printing device |
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| CN105818536A true CN105818536A (en) | 2016-08-03 |
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| CN201610174389.0A Pending CN105818536A (en) | 2016-03-25 | 2016-03-25 | Print head and ink-jet printing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114080322A (en) * | 2019-07-17 | 2022-02-22 | 东伸工业株式会社 | Printing apparatus and printing method |
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