CN101396907A - Liqui ejection device - Google Patents
Liqui ejection device Download PDFInfo
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- CN101396907A CN101396907A CNA2008101657886A CN200810165788A CN101396907A CN 101396907 A CN101396907 A CN 101396907A CN A2008101657886 A CNA2008101657886 A CN A2008101657886A CN 200810165788 A CN200810165788 A CN 200810165788A CN 101396907 A CN101396907 A CN 101396907A
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- sheet material
- conveyer belt
- paper
- ejection head
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Abstract
A liquid ejecting apparatus is provided. A transport mechanism is that transports a sheet in a first direction. A liquid ejecting head is configured to eject liquid onto the sheet. The transport mechanism includes: a plurality of transport belts that transports the sheet and arranged in a second direction which is orthogonal to the first direction, each of the transport belts extending in the first direction and having a transport surface with which the transported sheet is brought into contact; a concave portion disposed between the transport belts adjacent to each other in the second direction; and a plurality of suction ports that sucks the sheet and disposed on both sides of the concave portion in the second direction. A distance between the liquid ejecting head and a suction surface of each of the suction ports is longer than a distance between the liquid ejecting head and the transport surface. A distance between the liquid ejecting head and a bottom of the concave portion is longer than the distance between the liquid ejecting head and the suction surface.
Description
Technical field
The present invention relates to from the liquid ejection apparatus of fluid ejection head drops such as sheet material ejection China inks.
Background technology
As liquid ejection apparatus in the past, known have be printed thing (being sheet material) by the fluid ejection head (ink gun) that makes the ejection ink droplet with respect to paper etc. and move, on sheet material, carry out the ink-jet printer of printing treatment.
When utilizing such ink-jet printer to print, the ink droplet that is ejected into sometimes on the sheet material can make paper swelling (wetting expansion) rise and fall, and the phenomenon that what is called is called " wrinkling " takes place.And if it is wrinkling to produce this kind, then paper contacts with print head, and fault is blocked in might make dirty paper or generation.
Therefore, known a kind of printing equipment, its connecting gear is adsorbed on paper on this vacuum band and transmits by attracting in the vacuum band that is formed with a plurality of attraction mouths, makes paper draw (for example with reference to patent documentation 1) to lettering pressing plate side draught.
In addition, also known a kind of printing equipment, it attracts a mouthful attraction air by many endless belts of arranging rectangular strip from the air that is located between the endless belt, paper is pressed on transmits (for example with reference to patent documentation 2) on the endless belt.
Patent documentation 1: No. 3195792 communique of Japan Patent
Patent documentation 2: No. 2902150 communique of Japan Patent
But wrinkling because of what produce on paper in the printing equipment that possesses the vacuum band, floating of paper takes place in the place beyond the attraction mouth of vacuum band.In such cases, can consider to increase the quantity that attracts mouthful or in configuration, work hard, but will suppress the wrinkling of paper, need very large attraction.If the increase attraction, then the frictional force between the seat part of vacuum band and band increases, and transmits load and strengthens, and not only is difficult to carry out smoothness and high-precision paper and transmits, and need large-scale, expensive suction device, causes cost to rise.In addition, under the thin situation of paper,, can produce wrinkle on the contrary, printing quality is descended because of attraction improves.
In addition, under the situation of the printing equipment on the lettering pressing plate that air is attracted between mouthful endless belt that is located at many rectangular strips, produce wrinkling paper, produce and rub, be difficult to carry out smoothness and the transmission of high-precision paper also by air attraction mouthful absorption.In such cases, consider the wrinkling of paper, as long as the surface with respect to conveyer belt makes the attraction mouth just passable away from paper, but in such cases, air attracts the attraction of mouth to be difficult to act on paper, the paper that can not fully further, what therefore can not fully prevent paper and print head contacts or blocks fault.
Summary of the invention
For this reason, the object of the present invention is to provide a kind of generation that contacts or block fault that can prevent sheet material and fluid ejection head, simultaneously can be smooth and transmit sheet material accurately, spray the liquid ejection apparatus of liquid well.
For addressing the above problem, liquid ejection apparatus of the present invention, possess connecting gear that on the 1st direction, transmits sheet material and the fluid ejection head that described sheet material is sprayed liquid, wherein, described connecting gear possesses: a plurality of conveyer belts, it is used to transmit described sheet material, be arranged in the 2nd direction with described the 1st direction quadrature, described a plurality of conveyer belt possesses the transmission plane to the described sheet material contact of described the 1st direction extension and transmission respectively, recess, it is configured in along between the adjacent described conveyer belt of described the 2nd direction, attracts mouth, it is configured in the both sides of described recess in described the 2nd direction, is used to attract described sheet material; Distance between the suction surface of described fluid ejection head and described attraction mouth is than the distance between described fluid ejection head and the described transmission plane; Distance between the bottom of described fluid ejection head and described recess is than the distance between described fluid ejection head and the described suction surface.
Liquid ejection apparatus according to this formation, because the attraction mouth of width (the 2nd direction) both sides by being located at conveyer belt attracts sheet material, therefore, even produce wrinkling relaxing on the sheet material, also sheet material is furthered and bending to the direction (being lettering pressing plate side) away from fluid ejection head by attracting mouth in the width both sides of conveyer belt because of drop is ejected in.Therefore, attract sheet material, can not make itself and fluid jetting head transmit sheet material contiguously simultaneously in the mode that compresses towards conveyer belt.
In addition owing to attract mouth to be in than the transmission plane of conveyer belt position away from fluid ejection head, therefore, by attract sheet material that mouth furthered with attract mouthful not contact.And between attraction mouth adjacent between conveyer belt, the bending that attraction forms strengthens easily, but owing to recess is in than a position that attracts mouth away from fluid ejection head, thereby can pass through the recess absorbent sheet.Therefore, the parts that can prevent formation transmission roads such as crooked sheet material and lettering pressing plate contact.So, can eliminate being attracted the sheet material that furthers of mouth and attracting mouthful and form that the parts that transmit the road contact and the bad phenomenon that increases the transmission resistance.And, by position, the degree ground that will attract mouth to be set in not influence attraction, can attract reliably to produce wrinkling sheet material near transmission plane, make it to gap enlargement portion bending away from the direction of fluid ejection head.
Thus, can prevent the generation that contacts or block fault of sheet material and fluid ejection head, simultaneously can be smooth and transmit sheet material accurately, thus carry out the liquid ejection well.
This liquid ejection apparatus can also possess and the opposed lettering pressing plate of described fluid ejection head, forms described attraction mouth and described recess on described lettering pressing plate.The described bottom of described recess also can have smooth planar base surface, and the distance between described fluid ejection head and the described planar base surface is than the distance between described fluid ejection head and the described suction surface.
In addition, the described both side ends that attracts mouth also can on described the 2nd direction, be located at described conveyer belt.Thereby sheet material is adsorbed on the transmission plane of conveyer belt.
In addition, described connecting gear, also can with respect to the downstream configuration of described fluid ejection head on described the 1st direction towards described recess push described sheet material by pressure roller.
Constitute according to this and since by the conveyer belt in the downstream of the direction of transfer (the 1st direction) of sheet material mutual press pressure roller pressing tablet material, between conveyer belt, push sheet material, so can prevent floating of sheet material more reliably to direction away from fluid ejection head.
In addition, described conveyer belt, also can: be configured near the mode the both side ends at least of the various sheet materials of this multiple sheet material according to the described conveyer belt that is used for transmitting described multiple sheet material when the different multiple sheet material of the size that transmits the 2nd direction, be arranged in the 2nd direction.And, being configured near the described conveyer belt that is used to transmit described multiple sheet material the described both side ends of various sheet materials in the described multiple sheet material, also can be configured on the impartial position with respect to the described both side ends of various sheet materials in the described multiple sheet material.
According to the liquid ejection apparatus of this kind formation, can make the load of end, the left and right sides of sheet material even, transmit various sheet materials very evenly.
Thus, can prevent the generation that contacts or block fault of sheet material and fluid ejection head, simultaneously can be smooth and transmit various sheet materials accurately, can print better etc.
In addition, also can transmit mutually different described multiple sheet material of size respectively, thereby make near the conveyer belt that disposes equably from the position of side end the side end of various sheet materials easily along shared contraposition reference thing.
In addition, form support on described recess, described support constitutes in the mode that supports the described sheet material that transmits along described the 1st direction setting.
Constitute according to this, because the conveyer belt in the ejection zone of fluid ejection head is provided with support each other at least, even therefore under the situation about strengthening in the wrinkling cycle of attaching liq sheet material, also can enough supports supporting sheet between conveyer belt.Thus, can shorten the wrinkling cycle of sheet material, can reduce the difference of height that the fluctuating of sheet surface causes, can guarantee good printing state.That is to say, can suppress the difference of height of the fluctuating of the generation that contacts or block fault of sheet material and fluid ejection head and wrinkling formation, can be smooth and transmit sheet material accurately, print well.
In addition, described support also can be by constituting towards the outstanding fin of described fluid ejection head.In addition, described support also can be made of a plurality of rollers by the axle rotatably support that extends along described the 2nd direction.
According to the liquid ejection apparatus of this kind formation, can be by the support that constitutes by fin or roller, be bearing in crooked sheet material between the conveyer belt in the ejection zone well, can reduce the difference of height that the fluctuating of sheet surface causes, guarantee good printing state.
In addition, one of described conveyer belt and the described distance that attracts between one of mouth also can be shorter than the distance between one of described support and described attraction mouth.
According to the liquid ejection apparatus of this kind formation, can bring into play attraction mouthful an attraction effect well to sheet material, can access simultaneously and utilize support to suppress the effect that rises and falls.
In addition, the distance between described fluid ejection head and the described support also can be than the distance between described fluid ejection head and the described transmission plane.
Liquid ejection apparatus according to this kind formation, since can make support than the sheet material transmission plane of conveyer belt away from print head, therefore can be suppressed at and almost do not produce wrinkling sheet material etc. before the adhering to of liquid and contact, can transmit sheet material well with the unwanted of support.
In order to address the above problem, another liquid ejection apparatus of the present invention, possess connecting gear that on the 1st direction, transmits sheet material and the fluid ejection head that described sheet material is sprayed liquid, wherein, described connecting gear possesses: a plurality of conveyer belts, it is used to transmit described sheet material, be arranged in the 2nd direction with described the 1st direction quadrature, described a plurality of conveyer belt possesses the transmission plane that extends and contact with the described sheet material that transmits along described the 1st direction respectively, opening, it is configured between the adjacent described conveyer belt of described the 2nd direction, attracts mouth, it is configured in described opening on described the 2nd direction both sides are used to attract described sheet material; Distance between the suction surface of described fluid ejection head and described attraction mouth is than the distance between described fluid ejection head and the described transmission plane.
In addition, in order to address the above problem, a liquid ejection apparatus more of the present invention, possesses the connecting gear that on the 1st direction, transmits sheet material, with fluid ejection head to described sheet material ejection liquid, wherein, described connecting gear possesses: a plurality of conveyer belts, it is used to transmit described sheet material, be arranged on the 2nd direction with described the 1st direction quadrature, described a plurality of conveyer belt possesses the transmission plane that extends and contact with the described sheet material that transmits along described the 1st direction respectively, recess, it is configured in along between the adjacent described conveyer belt of described the 2nd direction, attract the zone, it is configured in along between the adjacent described conveyer belt of described the 2nd direction to attract the mode of described sheet material towards described recess; Distance between the suction surface in described fluid ejection head and described attraction zone is than the distance between described fluid ejection head and the described transmission plane; Distance between the bottom of described fluid ejection head and described recess is than the distance between described fluid ejection head and the described suction surface.
Description of drawings
Fig. 1 is that the example of the embodiment of printing equipment of the present invention is the stereoscopic figure of printer.
Fig. 2 is the concise and to the point side sectional view that the inside of expression printer shown in Figure 1 constitutes.
Fig. 3 is the concise and to the point section plan that the inside of expression printer shown in Figure 1 constitutes.
Fig. 4 is that expression can be from the concise and to the point side sectional view of the printer of the state of main tray paper supply.
Fig. 5 is that expression can be from the concise and to the point section plan of the printer of the state of main tray paper supply.
Fig. 6 is the stereogram of printing treatment portion.
Fig. 7 is the cutaway view of the width of printing treatment portion.
Fig. 8 is the cutaway view of paper conveyance direction of the attraction notch portion at printing treatment portion place.
Fig. 9 is the cutaway view of the conveyer belt paper conveyance direction partly at printing treatment portion place.
Figure 10 is the vertical view of connecting gear.
Figure 11 is the enlarged side view of conveyer belt part.
Figure 12 is the cutaway view of width of printing treatment portion of the variation of expression connecting gear.
Figure 13 is the cutaway view of the width of printing treatment portion.
Figure 14 is the concise and to the point cutaway view of width of printing treatment portion of the undulating state of expression paper.
Figure 15 is the cutaway view of width of printing treatment portion of the variation of expression connecting gear.
Figure 16 is the cutaway view of the direction of transfer of the paper between the conveyer belt in the printing treatment portion of variation of expression connecting gear.
Figure 17 is the cutaway view of width of printing treatment portion of the variation of expression connecting gear.
Figure 18 is the cutaway view of width of printing treatment portion of the variation of expression connecting gear.
Symbol description
1-ink-jet printer (printing equipment), 22-ink gun (print head), 70,120,130-connecting gear, 80-conveyer belt, 80a-tooth, 85-press pressure roller, 102,102a-attraction mouth, 103-recess, 103a-bottom surface, 110-fin (support), 112-backing roll (roller, support), A, B-distance, C-contraposition reference, P-paper (sheet material, be printed thing), WO-size, W1～W5-width dimensions.
The specific embodiment
Below, describe with reference to the example of accompanying drawing the embodiment of liquid ejection apparatus of the present invention.
Having, in the present embodiment, is that example describes with the ink-jet printer as liquid ejection apparatus again.
Fig. 1 is the stereoscopic figure of the printer of present embodiment, Fig. 2 is the concise and to the point side sectional view that the inside of expression printer shown in Figure 1 constitutes, Fig. 3 is the concise and to the point section plan that the inside of expression printer shown in Figure 1 constitutes, Fig. 4 is that expression can be from the concise and to the point side sectional view of the printer of the state of main tray paper supply, Fig. 5 is that expression can be from the concise and to the point section plan of the printer of the state of main tray paper supply, Fig. 6 is the stereogram of printing treatment portion, Fig. 7 is the cutaway view of the width of printing treatment portion, Fig. 8 is the cutaway view of the paper conveyance direction of the attraction notch portion in the printing treatment portion, Fig. 9 is the cutaway view of the paper conveyance direction of the conveyer belt part in the printing treatment portion, Figure 10 is the vertical view of connecting gear, and Figure 11 is the enlarged side view of conveyer belt part.
The printer 1 of present embodiment is from the front paper supply, goes out the ink-jet printer of master mode from behind as an example, and as shown in Figure 1, the central authorities in the front of crust of the device 4 (left end face among Fig. 1) are formed with secondary carton filler 5.As shown in Figure 2, the thing that is printed of opening (large size) greatly that loading and unloading freely are filled with sheet in this pair carton filler 5 is that paper (sheet material) P is accommodated in the secondary carton 6 in the receiving space S.This pair carton 6, its latter half is loaded in the inside of crust of the device 4, and first half is outstanding from crust of the device 4.
In addition, as shown in Figure 1, be provided with window portion 8 in the side of crust of the device 4 (leading flank among Fig. 1), it has the switch door 7 of switch laterally, under the state of opening switch door 7, and main tray 42 can come in and go out (taking-up is put into).As shown in Figure 2, in this main tray 42, the thing of opening for a short time that is printed is that paper P is incorporated in the receiving space S with stacked state.In addition, be provided with paper delivery pallet 9, be used to receive the paper P that finishes printing in the back of crust of the device 4 (its right end face among Fig. 1).
As shown in Figures 2 and 3, in crust of the device 4, forwardly be provided with carton portion 40 is set, the downstream (being the rear) that portion 40 is set at carton is provided with sheet feed section 10.Be provided with printing treatment portion 20 in the downstream of sheet feed section 10, also be provided with paper delivery portion 50.
At carton portion 40 is set, be provided with the switch cover 5a that can turn to the inside at secondary carton filler 5, this switch cover 5a is by inserting secondary carton 6 to secondary carton filler 5, bump with secondary carton 6 and to connect, the open auxiliary that turns to the inside carton filler 5, by pulling out secondary carton 6 from secondary carton filler 5, rotate to secondary carton filler 5 sides, close secondary carton filler 5.
In addition, on secondary carton filler 5, be provided with the switch cover detecting sensor 5b that the switch according to switch cover 5a is switched on or switched off.
In addition, be provided with the secondary carton detecting sensor 5c that is switched on or switched off with respect to the loading and unloading of printer 1 according to secondary carton 6 on the position of the filling direction front side in the printer 1 that is filled with secondary carton 6.
In addition, in crust of the device 4, be provided with main tray portion 41 is set, be provided with at this main tray and releasably take in main tray 42 in the portion 41.
This takes in main tray 42, portion has and is used for the stacked receiving space S that opens paper P for a short time that takes within it, in this receiving space S, be provided with paper elevating mechanism 43, be accommodated in the height and position that the topmost of opening paper P for a short time in the receiving space S reaches regulation with stacked state by this paper elevating mechanism 43.
Main tray is provided with portion 41, possesses the lifter plate 44 of mounting main tray 42, and this lifter plate 44 can pass through elevating mechanism 44a lifting.
In addition, be provided with the main tray detecting sensor 46 that haunt (exposing disappearance) according to pin 45 is switched on or switched off on this lifter plate 44, this pin 45 is provided with the loading and unloading of portion 41 along with carton 42 with respect to main tray and haunts.
And, at this main tray portion 41 is set, to pull down the state of secondary carton 6, by rising with elevating mechanism 44a, as Fig. 4 and shown in Figure 5, the main tray 42 on the lifter plate 44 is configured on the paper feeding position, can utilize paper extraction roller 13 to extract paper P out with this state.
In addition,, then main tray 42 is configured in the position of readiness that breaks away from from the paper feeding position, under this state, can takes out main tray 42 from the window portion 8 of crust of the device 4 if fall lifter plate 44 by elevating mechanism 44a in contrast.And, be configured at main tray 42 under the state of position of readiness, can be from the secondary carton 6 of secondary carton filler 5 fillings.
And, be provided with in the portion 41 at main tray, be provided with and be used to detect main tray 42 and be configured in the locational paper feeding position-detection sensor 47 of paper feeding and be used to detect main tray 42 and be configured in position of readiness detecting sensor 48 on the position of readiness.
In sheet feed section 10, be provided with paper extraction roller 13, it is bearing in the front end of frame 12, this frame 12 is swung to be bearing in the crust of the device 4 freely, this paper extraction roller 13 connects by bumping with the paper P that is configured in the below, rearward one by one (in Fig. 2 and Fig. 3 to the right) extracts the uppermost paper of paper P out, sends into the printing treatment portion 20 of rear side.
In printing treatment portion 20, be provided with ink gun (print head) 22 movably along guide shaft 21,21 with the setting of paper feeding direction quadrature, it moved, sprays China ink on one side on one side to the width of paper P with respect to the paper P that supplies with drop (ink droplet) prints desirable image.
As shown in Figure 6, the rotating band 64 of on driving wheel 62 by drive motors 61 rotation and driven pulley 63, reeling, this ink gun 22 is fixed on rotating band 64 parts, by driven driving wheels 62 rotations by drive motors 61, rotating band 64 is moved, and ink gun 22 moves along guide shaft 21,21.Have again, the ink gun 22 of present embodiment, the length of paper conveyance direction that is formed with the zone of injection nozzle is 2 inches, is than relatively large ink gun as ink-jet printer.
In addition, being provided with connecting gear 70 below ink gun 22, is that paper P transmits on one side it is printed thing from the below supporting on one side.
As Fig. 6～shown in Figure 10, connecting gear 70 have with upper surface as the lettering pressing plate 71 of printing datum level and with ink gun 22 opposed attraction modules 72.This attraction module 72 is provided with the attraction blower fan 74 that is used for the air in the sucking-off spatial portion S1 for the inner case shape that has formed spatial portion S1 in the bottom.
In the end of the upstream side of the attraction module 72 that constitutes connecting gear 70, a plurality of regulating wheels 75 and guide wheel 73 (with reference to Figure 11) are supported in the compartment of terrain.In addition, attracting near the downstream of module 72, the whole width that attracts module 72 be formed with towards below the slot part 76 of opening, on this slot part 76, be provided with rotating shaft 78.On this rotating shaft 78 with regulating wheel 75 opposed positions on be provided with and the driving wheel 79 of regulating wheel 75 with quantity.And, the conveyer belt 80 of on these driving wheels 79 and regulating wheel 75 and guide wheel 73, reeling respectively, conveyer belt 80 is spaced at the width that attracts module 72.Have, driving wheel 79 and guide wheel 73 have tooth at outer peripheral face respectively, but on regulating wheel 75 tooth are not set again.
Here, printer 1 can print the different multiple paper P of width dimensions.For this reason, a plurality of conveyer belts 80 various paper Ps corresponding configuration different of disposing in the width compartment of terrain with width dimensions.
Below, the configuration of this conveyer belt 80 is described.
As shown in figure 10, the printing datum level of the upper surface of the attraction module 72 of connecting gear 70 is a lettering pressing plate 71, is provided with contraposition reference C in a lateral side (right side among Figure 10).And in this connecting gear 70, any paper P that width dimensions is different send into the state that contraposition reference C aligns with the one sidepiece, transmit along contraposition reference C.
As the paper P that prints is specific specification, and the name card size of width dimensions W1, the postcard size of width dimensions W2, the A4 size of width dimensions W3, the A3 size of width dimensions W4, the wide A3 size of width dimensions W5 etc. are for example arranged.
And in connecting gear 70, the position all disposes conveyer belt 80 near the both side ends of above-mentioned any paper P.
Have, be configured near the both side ends of various paper P conveyer belt 80 about being configured on the impartial position, the size WO from the both side ends of various paper P near conveyer belt 80 edge parts is set to about 10mm.And, dispose attraction mouth 102 described later near the conveyer belt 80 this both side ends to the below of the edge part of the outstanding paper P in side.
As shown in figure 11, conveyer belt 80 is that the side face side has the synchronous band of a plurality of tooth 80a within it, tooth 73a, the 79a engagement of the tooth 80a of this conveyer belt 80 and guide wheel 73 and driving wheel 79.Have, regulating wheel 75 is to direction (right side among Fig. 8, Fig. 9, Figure 11) the effect elastic force away from driving wheel 79, thus to the conveyer belt 80 additional tension force of stipulating again.
Top at the upstream side of conveyer belt 80 is provided with and guide wheel 73 opposed hold-down rollers 81.Hold-down roller 81 can be rotated to support on the frame 82, to guide wheel 73 side active forces.
In addition, be provided with on the top in the downstream of conveyer belt 80 many to the opposed locations that is configured in conveyer belt 80 along conveyer belt 80 compartment of terrains feed rolls 83,84 and be located at 80 of each conveyer belts by pressure roller 85.Feed rolls 83,84 reaches and can be rotated to support on the pallet 86 by pressure roller 85.Feed rolls 83 be configured in driving wheel 79 directly over, via conveyer belt 80 and driving wheel 79 between clamping paper P.Feed rolls 84 is configured in the upstream side of feed rolls 83, and the paper P's before preventing to arrive feed rolls 83 on the conveyer belt 80 floats.In addition, press the upstream side of pressure roller 85, be used for preventing floating of paper P each other at conveyer belt 80 at driving wheel 79.
End at the rotating shaft 78 that is provided with driving wheel 79 is provided with transfer wheel 91, is reeling to transmit on this transfer wheel 91 and is being with 94, and this transmission is wound onto on the swiveling wheel 93 that transmits motor 92 with 94.Have again, on rotating shaft 78, together be provided with discoideus encoding board 95, by detecting with detector 96 near the periphery of this encoding board 95, and can detect the position of rotation of rotating shaft 78 along a plurality of slits (diagram is omitted) that circumferencial direction forms with transfer wheel 91.
As shown in Figure 7, at the upper surface that attracts module 72, in the width both sides of conveyer belt 80, be the low slightly mode of transmission plane 80b of paper P with upper level position than conveyer belt 80, form than the suction surface 101 of transmission plane 80b along conveyer belt 80 away from ink gun 22.On this suction surface 101, on whole direction of transfer, form a plurality of attraction mouths 102 that are communicated with spatial portion S1.In addition, between the adjacent attraction mouth 102 of the width of conveyer belt 80, forming gap enlargement portion is recess 103.This recess 103 is configured in its bottom surface 103a than attracting mouth 101 on the lower position of ink gun 22.As shown in Figure 7, recess 103 is configured between the adjacent conveyer belt 80 of the width of conveyer belt 80 (and direction of conveyer belt 80 quadratures), attracts mouth 102 to be configured in the both sides of this recess 103.In other words, attract mouth 102 to be configured between the adjacent conveyer belt 80.But,, also can will attract mouth 102 to be formed on a side of recess 103 in direction with the direction of transfer quadrature in order to attract paper P towards recess 103.In addition, also can will form the both sides that the attraction zone that attracts mouth 102 is formed on recess 103, also can will attract the zone to be formed on a side of recess 103 at direction of transfer at direction of transfer.
In the present embodiment, as mentioned above since ink gun 22 than relatively large, therefore long at the interval (i.e. 79 the distance from guide wheel 73 to driving wheel) of the upstream side and the downstream clamping paper P of ink gun 22, if do not attract paper P just to cause that paper P floats easily downwards.
And, in above-mentioned connecting gear 70, transmit motor 72 if drive, just pass to transfer wheel 91 with 94 revolving forces, rotating shaft 78 rotations with swiveling wheel 93 by transmission.Thus, a plurality of conveyer belts 80 that are wound on driving wheel 79 and regulating wheel 75 and the guide wheel 73 move respectively.
So, send into the paper P between conveyer belt 80 and the hold-down roller 81, be transmitted and be with 80 and hold-down roller 81 clampings, rearward send, then by conveyer belt 80 downstream side transmit, during this period, carry out printing treatment by ink gun 22.
At this moment, paper P rises and falls because of the ink droplet swelling from ink gun 22 ejections sometimes, produces wrinkling.In the connecting gear 70 of present embodiment, if by the air that attracts blower fan 74 to attract in the spatial portion S1, just the attraction mouth 102 of the width both sides by being located at conveyer belt 80 attracts paper P downwards, even paper P produce wrinkling cause lax, paper P also because of the width both sides at conveyer belt 80 be pulled to below bending.Therefore, paper P on one side with from the width both sides of conveyer belt 80 towards the compacted mode of conveyer belt 80, be accompanied by the mobile of conveyer belt 80 and be transmitted, on one side suppress each other to float at conveyer belt 80, can prevent the bad phenomenon that contacts with ink gun 22.
In addition, because suction surface 101 is in the position that reduces a little with respect to transmission plane 80b, therefore can prevent and the contacting of paper P, shorten paper P simultaneously and attract mouthfuls 102 distance, need not increase the attraction that attracts blower fan 74 significantly and also can bring into play attraction effectively paper P.And, because paper P is a basic point with the two side ends of conveyer belt 80, towards near attraction mouth 102 oblique bendings its both sides, thereby at the mutual width central portion of conveyer belt 80, paper P is added macrobending with the mountain valley shape easily, but, thereby can prevent the contact of paper P reliably because the bottom surface 103a of the mutual recess 103 of conveyer belt 80 is configured in the position lower than suction surface 101.Therefore, the paper P that is pulled to the below can not contact with the bottom surface 103a that attracts mouth 102 and recess 103, thereby can not increase the transmission resistance yet.
Here, the printer 1 of present embodiment, because in the connecting gear 70, the position disposes conveyer belt 80 equably near the two side ends of the paper P of different width dimensions W1～W5, and with the end of paper P is that edge part is not positioned on the conveyer belt 80 or the edge part of paper P does not excessively leave the mode of conveyer belt 80, therefore the high smooth evenly paper P that transmits different width dimensions W1～W5 is difficult to produce because of what the balance difference took place and blocks fault etc.
Then, paper P is discharged to the paper delivery pallet by conveyer belt 80 and feed rolls 83,84 clampings.
In addition, at this moment, push paper P by pressure roller 85 downwards 80 of conveyer belts in the middle of the conveyer belt 80 by being configured in.Thus, can make the wrinkling paper P of generation crooked more reliably downwards 80 of conveyer belts.
As mentioned above, printer 1 according to present embodiment, the attraction mouth 102 lower slightly than the transmission plane 80b of the width both sides that are located at conveyer belt 80 attracts paper P because by the position is set, therefore promptly use more weak attraction also can attract paper P effectively, although ink gun 22 is large-scale, also can prevent floating of paper P, prevent contacting of paper P and ink gun 22, thereby can prevent to block the generation of fault at the whole transit area of conveyer belt 80.And, because the bottom surface 103a that is positioned at the recess 103 of 80 of conveyer belts is in than attracting mouthfuls 102 lower positions, therefore can with attract crooked paper P not with lettering pressing plate side contacts, do not increase the mode that transmits resistance, high accuracy transmits paper P.So, can carry out high-precision printing.
In addition, in connecting gear 70, because at the upstream side of the position of the clamping paper P in the downstream of direction of transfer, push paper P using by pressure roller 85, therefore can prevent floating of paper P more reliably 80 of conveyer belts with recess 103 opposed positions.
In addition, adopt band synchronously as conveyer belt 80, no matter but the thickness of conveyer belt 80 how all high accuracy control transmit, conveyer belt 80 does not dally yet, and can improve the transmission precision of paper P, can print accurately.
In addition, printer 1 according to present embodiment, because conveyer belt 80 is configured near the both side ends at least of the different various paper P of width dimensions, transmit paper P with a plurality of conveyer belts 80 that comprise near the conveyer belt the both side ends that is configured in these paper P, therefore can transmit the different various paper P of width dimensions very evenly.
Especially, owing to be configured near the locational conveyer belt 80 of both side ends of the paper P of transmission, be configured with respect to paper P on the impartial position of width, so can transmit the different various paper P of width dimensions more evenly.
Thus, can prevent the generation that contacts or block fault of paper P and ink gun 22, smooth simultaneously and transmit various paper P accurately, print well.
In addition, the present invention is not limited to above-mentioned embodiment, can carry out numerous variations.For example, in the above-described embodiment, the width of the multiple paper P different with width dimensions disposes a plurality of conveyer belts 80 equably as one man, but also can be by uniformly-spaced configuration.Even in such formation,,, can not transmit contiguously and be printed thing with print head because it is crooked away from the direction of print head by attracting mouth to be pulled in the width both sides of conveyer belt to be printed thing even be printed wrinkling the relaxing of deposits yields.
In addition, in the present embodiment, forming the attraction mouth 102 that is communicated with spatial portion S1 with conveyer belt 80 position adjacent along direction of transfer, but attracting the position of mouth to be not limited in this, specifically describing with reference to Figure 12.
As shown in figure 12, in this connecting gear 120, the lower position at the width central portion of conveyer belt 80 is formed with a plurality of intercommunicating pores 121 that are communicated with spatial portion S1.And this intercommunicating pore 121 is by the gap of the tooth 80a of conveyer belt 80, is communicated to the outside in the both side ends of conveyer belt 80.This is communicated to outside opening is the position attraction mouth 102a lower slightly than transmission plane 80b.
In this connecting gear 120, if the air by attracting blower fan 74 to attract in the spatial portion S1, the gap of tooth 80a that just can be by intercommunicating pore 121 and conveyer belt 80 is from the attraction mouth 102a attraction air of the both side ends of conveyer belt 80.
That is to say, in this connecting gear 120, be formed with, be easy on whole direction of transfer, obtain more uniform attraction effect at the continuous attraction mouth 102a of the direction of transfer of conveyer belt 80.
Like this, according to the printer that possesses above-mentioned connecting gear 120, owing to the gap of tooth 80a of the inner face of conveyer belt 80 is communicated with attracting a mouth 102a, thereby other attraction mouth need be set, can seek to reduce cost by the simplification of structure in the both sides of conveyer belt 80.
In Figure 12, the intercommunicating pore 121 that is communicated with spatial portion S1 of the lower position of the width central portion that is located at conveyer belt 80 is illustrated with 2 examples that attract mouthful 102a to be communicated with on the two end portions that is located at conveyer belt 80, but each of Figure 12 attracts a mouthful 102a also can directly be communicated with spatial portion S1, in such cases, because it is synchronous band that conveyer belt 80 there is no need, the stream of the air that attracts is that straight line does not have loss so efficient height because of attracting mouthful 102a and spatial portion S1 also.
In addition, recess 103 there is no need to have the shape of band bottom surface 103a, as shown in figure 18, also can be the recess that is made of single curved surface 103b.And, also can on lettering pressing plate 71, form the opening of no bottom surface 103a.But in such cases, for opening is not communicated with spatial portion S1, need be at other local spatial portion S1 that forms.
In addition, in the present embodiment, the recess 103 that is formed at 80 of conveyer belts is recess shapes merely, if but the expansion of the interval of this conveyer belt 80, then the wrinkling cycle of paper strengthens, and the difference of height of the fluctuating of paper surface is just easy to be increased.
If the difference of height of the fluctuating of this paper surface increases, then the drop point site from the ink droplet of print head ejection produces deviation, become the printing quality main reasons for decrease, therefore the present invention is as its countermeasure, another example that also can be used as present embodiment is provided with the support unit that supporting is printed thing, adopts Figure 13 and Figure 14 that this embodiment is described.About figure and explanation, for parts etc. with or same function identical with above-mentioned embodiment, additional same-sign, and omit its explanation.Figure 13 is the cutaway view of the width of printing treatment portion, and Figure 14 is the concise and to the point cutaway view of width of printing treatment portion of the undulating state of expression paper.
As shown in figure 13, with described Fig. 7 similarly, form suction surface 101 at the upper surface that attracts module 72 along conveyer belt 80, on this suction surface 101, form a plurality of attraction mouths 102 that are communicated with spatial portion S1 at whole direction of transfer.In addition, between the adjacent attraction mouth 102 of the width of conveyer belt 80, be formed with recess 103.
In this embodiment, mutual at conveyer belt 80, at least at the printing zone of ink gun 22, be formed with along the fin (support) 110 of the paper P direction of transfer of conveyer belt 80.This fin 110 is upright being located on the bottom surface 103a of recess 103 towards the top.
Here, the height and position of the upper end of fin 110 is lower than the transmission plane 80b of conveyer belt 80, and than suction surface 101 height.
In addition, fin 110 is formed at the mutual centre of conveyer belt 80, attracts center longer than the distance A at the center that attracts mouthfuls 102 center and conveyer belt 80 apart from B of mouthfuls 102 center and fin 110.
And, between conveyer belt 80 and fin 110, dispose by pressure roller 85.
When printing on paper P as mentioned above, paper P produces rise and fall wrinkling sometimes because of the ink droplet swelling from ink gun 22 ejections, but since paper P attract mouthfuls 102 by towards below attract, thereby can suppress to float from conveyer belt 80.When not having fin 110, if the fluctuating of paper P is big, then the difference of height on the surface of paper P increases, and produces deviation from the drop point site of the ink droplet of ink gun 22 ejections, becomes the printing quality main reasons for decrease.
, in the printer 1 of present embodiment, owing to fin 110 is set 80 of conveyer belts, the therefore fin 110 supporting paper P of 80 of available conveyer belts.
Figure 14 is the undulating state of expression paper P, the state of the paper P when dotted line is represented not have fin 110 among Figure 14, the state of the paper P when solid line is represented fin 110 is set among the figure.
As shown in figure 14, when not having fin 110, the wrinkling cycle of paper P is elongated, and the difference of height that the fluctuating on paper P surface forms increases, but when fin 110 was set, the wrinkling cycle of paper P shortened, and the difference of height that the fluctuating on paper P surface forms reduces.
Like this, when transmitting in the connecting gear that fin 110 is being set under the situation of paper P, because the conveyer belt in the printing zone of ink gun 22 80 is mutual at least, the support that constitutes by fin 110 along the direction of transfer setting of paper P, therefore even under elongated situation of the wrinkling cycle of the adhere papers P of Yin Mo, also can be with fin 110 at 80 supporting paper P of conveyer belt.Thus, can shorten the wrinkling cycle of paper P, can reduce the difference of height that the fluctuating on the surface of paper P forms, thereby can guarantee good printing state.
That is to say, can suppress the generation that contacts or block fault, and the difference of height of the fluctuating of wrinkling formation of paper P and ink gun 22, can be smooth and transmit paper P accurately, print well.
In addition, the bottom surface 103a of the recess 103 between conveyer belt 80 and fin 110 is in than drawing mouthfuls 102 lower positions, therefore can not increase the mode that transmits resistance not make, transmit paper P accurately because of attraction crooked paper P and lettering pressing plate side contacts.So, can carry out high-precision printing.
In addition, because the distance A that conveyer belt 80 and attraction mouth are 102 is than fin 110 and attract the short apart from B of 102 in mouth, therefore can bring into play the attraction effect that attracts mouth 102 well, can access simultaneously and utilize fin 110 to suppress the effect that paper P rise and fall paper P.
And, because the transmission plane 80b of the paper P of the aspect ratio conveyer belt 80 of fin 110 is low, does not almost produce wrinkling paper P etc. before therefore can being suppressed at China ink and adhering to and contact with the unwanted of fin 110, can transmit paper P well.
In addition, in connecting gear 70, because upstream side in the position of the clamping paper P in the downstream of direction of transfer, push paper P using by pressure roller 85 with recess 103 opposed positions, therefore can prevent paper P floating between conveyer belt 80 and fin 110 more reliably.
In addition, by adopting band synchronously as conveyer belt 80, no matter but the thickness of conveyer belt 80 how all high accuracy control transmit, conveyer belt 80 does not dally yet, and can improve the transmission precision of paper P, can print accurately.
Have again, in the above-described embodiment, in order to suppress the fluctuating of the wrinkling paper P that causes, formed fin 110 at 80 supports of conveyer belt as supporting paper P, but the support as paper P is not limited to fin, and also can arrange with the axis with the direction of transfer quadrature of paper P along the direction of transfer of paper P be the backing roll that rotate at the center, in addition, also can make up fin and backing roll.
In addition, be not limited to the above-mentioned embodiment that fin is set, can carry out numerous variations.With reference to Figure 15～Figure 17 the one example is described.Figure 15 is the cutaway view of width of printing treatment portion of the variation of expression connecting gear, and Figure 16 is the cutaway view of the direction of transfer of the paper between conveyer belt in the printing treatment portion of variation of expression connecting gear.
Figure 15 and Figure 16 represent to make up the example of fin and backing roll.
As Figure 15 and shown in Figure 16, in this connecting gear 130, form on the part of the formation position of fin 110 towards below sunk reception hole 111, being provided with the axis with the direction of transfer quadrature of paper P in this reception hole 111 is the backing roll 112 that rotate at the center.Have, the upper end of backing roll 112 is consistent with the upper end of fin 110 again.
And, possess the printer 1 of the connecting gear 130 of formation like this, by the mutual support that constitutes by backing roll 112 of the conveyer belt in the printing zone that is located at ink gun 22 at least 80, can be at 80 of conveyer belts supporting paper P well.Thus, can shorten the wrinkling cycle of paper P, can reduce the difference of height of the fluctuating formation on paper P surface, thereby can guarantee good printing state.
Figure 17 represents to be suitable for another example of the connecting gear of above-mentioned printer 1.
As shown in figure 17, in this connecting gear 120, on the lower position of the width central portion of conveyer belt 80, be formed with a plurality of intercommunicating pores 121 that are communicated with spatial portion S1.And this intercommunicating pore 121 is via the gap of the tooth 80a of conveyer belt 80, is communicated to the outside in the both side ends of conveyer belt 80.This is communicated to outside opening is the position attraction mouth 102a lower slightly than transmission plane 80b.
Claims (15)
1. liquid ejection apparatus possesses the connecting gear that transmits sheet material on the 1st direction and to the fluid ejection head of described sheet material ejection liquid, wherein,
Described connecting gear possesses:
A plurality of conveyer belts, it is used to transmit described sheet material, is arranged on the 2nd direction with described the 1st direction quadrature, and described a plurality of conveyer belts possess the transmission plane that extends and contact with the described sheet material that transmits along described the 1st direction respectively,
Recess, it is disposed at along between the adjacent described conveyer belt of described the 2nd direction,
Attract mouth, it is disposed at described recess on described the 2nd direction both sides are used to attract described sheet material;
Distance between the suction surface of described fluid ejection head and described attraction mouth is than the distance between described fluid ejection head and the described transmission plane;
Distance between the bottom of described fluid ejection head and described recess is than the distance between described fluid ejection head and the described suction surface.
2. liquid ejection apparatus as claimed in claim 1 wherein, also possesses and the opposed lettering pressing plate of described fluid ejection head,
On described lettering pressing plate, be formed with described attraction mouth and described recess.
3. liquid ejection apparatus as claimed in claim 1, wherein,
The described bottom of described recess has smooth planar base surface,
Distance between described fluid ejection head and the described planar base surface is than the distance between described fluid ejection head and the described suction surface.
4. liquid ejection apparatus as claimed in claim 1, wherein,
The described both side ends that attracts mouth on described the 2nd direction, to be located at described conveyer belt.
5. liquid ejection apparatus as claimed in claim 1, wherein,
Described connecting gear be provided with towards described recess push described sheet material by pressure roller, should on described the 1st direction, be configured in the downstream by pressure roller with respect to described fluid ejection head.
6. liquid ejection apparatus as claimed in claim 1, wherein,
Described conveyer belt is aligned on the 2nd direction, and during the different multiple sheet material of the size on transmitting the 2nd direction, the described conveyer belt that is used for transmitting described multiple sheet material is configured in respectively near the both side ends at least of the various sheet materials of described multiple sheet material.
7. liquid ejection apparatus as claimed in claim 6, wherein,
Be configured near the described conveyer belt that is used to transmit described multiple sheet material the described both side ends of various sheet materials in the described multiple sheet material, be configured on the impartial position with respect to the described both side ends of various sheet materials in the described multiple sheet material.
8. liquid ejection apparatus as claimed in claim 6, wherein,
The described multiple sheet material that size is different mutually transmits along shared contraposition reference thing respectively.
9. liquid ejection apparatus as claimed in claim 1, wherein,
Be formed with along described the 1st direction setting and be used to support the support of the described sheet material that is transmitted at described recess.
10. liquid ejection apparatus as claimed in claim 9, wherein,
Described support is by constituting towards the outstanding fin of described fluid ejection head.
11. liquid ejection apparatus as claimed in claim 9, wherein,
Described support is made of a plurality of rollers, and described a plurality of rollers are supported and can be rotated by the axle that extends along described the 2nd direction.
12. liquid ejection apparatus as claimed in claim 9, wherein,
Distance between one of one of described conveyer belt and described attraction mouth is shorter than the distance between one of described support and described attraction mouth.
13. liquid ejection apparatus as claimed in claim 9, wherein,
Distance between described fluid ejection head and the described support is than the distance between described fluid ejection head and the described transmission plane.
14. a liquid ejection apparatus possesses on the 1st direction the connecting gear that transmits sheet material and to the fluid ejection head of described sheet material ejection liquid, wherein,
Described connecting gear possesses:
A plurality of conveyer belts, it is used to transmit described sheet material, is arranged on the 2nd direction with described the 1st direction quadrature, and described a plurality of conveyer belts possess the transmission plane that extends and contact with the described sheet material that transmits along described the 1st direction respectively,
Opening, it is configured in along between the adjacent described conveyer belt of described the 2nd direction,
Attract mouth, it is disposed at described opening on described the 2nd direction both sides are used to attract described sheet material;
Distance between the suction surface of described fluid ejection head and described attraction mouth is than the distance between described fluid ejection head and the described transmission plane.
15. a liquid ejection apparatus possesses on the 1st direction the connecting gear that transmits sheet material and to the fluid ejection head of described sheet material ejection liquid, wherein,
Described connecting gear possesses:
A plurality of conveyer belts, it is used to transmit described sheet material, is arranged on the 2nd direction with described the 1st direction quadrature, and described a plurality of conveyer belts possess the transmission plane that extends and contact with the described sheet material that transmits along described the 1st direction respectively,
Recess, it is disposed at along between the adjacent described conveyer belt of described the 2nd direction,
Attract the zone, it is configured in along between the adjacent described conveyer belt of described the 2nd direction, attracts described sheet material towards described recess;
Distance between the suction surface in described fluid ejection head and described attraction zone is than the distance between described fluid ejection head and the described transmission plane;
Distance between the bottom of described fluid ejection head and described recess is than the distance between described fluid ejection head and the described suction surface.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007255160A JP4983517B2 (en) | 2007-09-28 | 2007-09-28 | Printing device |
| JP2007255160 | 2007-09-28 | ||
| JP2008021943 | 2008-01-31 | ||
| JP2008021942 | 2008-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101396907A true CN101396907A (en) | 2009-04-01 |
Family
ID=40515860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101657886A Pending CN101396907A (en) | 2007-09-28 | 2008-09-23 | Liqui ejection device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4983517B2 (en) |
| CN (1) | CN101396907A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103241012A (en) * | 2012-02-14 | 2013-08-14 | 精工爱普生株式会社 | Liquid ejection device |
| CN105150685A (en) * | 2015-06-15 | 2015-12-16 | 温州启昊激光科技有限公司 | High speed ink-jet digital printing machine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8550617B2 (en) | 2009-07-31 | 2013-10-08 | Zamtec Ltd | Printing system with scanner to align printhead assembly |
| JP5190614B2 (en) * | 2010-05-28 | 2013-04-24 | キヤノンファインテック株式会社 | Conveying apparatus and recording apparatus using the same |
| KR102030150B1 (en) * | 2017-06-22 | 2019-11-08 | 주식회사 포스코 | Apparatus of coating steel sheet using inkjet printing |
| JP7463709B2 (en) * | 2019-12-16 | 2024-04-09 | ブラザー工業株式会社 | Image Recording Device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56115285A (en) * | 1980-02-19 | 1981-09-10 | Ricoh Co Ltd | Ink-jet recorder |
| JPS5930606B2 (en) * | 1980-03-28 | 1984-07-27 | 株式会社リコー | Sheet conveyance device |
| JPH0237147U (en) * | 1988-09-02 | 1990-03-12 | ||
| JP2000191175A (en) * | 1998-12-25 | 2000-07-11 | Sharp Corp | Record medium carrying belt and recording device using it |
| JP2001316011A (en) * | 2000-05-11 | 2001-11-13 | Tohoku Ricoh Co Ltd | Paper suction conveying device and printing device on stencil printing plate |
| JP3978713B2 (en) * | 2002-02-22 | 2007-09-19 | セイコーエプソン株式会社 | RECORDING MEDIUM CONVEYING DEVICE AND RECORDING DEVICE USING THE CONVEYING DEVICE |
-
2007
- 2007-09-28 JP JP2007255160A patent/JP4983517B2/en not_active Expired - Fee Related
-
2008
- 2008-09-23 CN CNA2008101657886A patent/CN101396907A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103241012A (en) * | 2012-02-14 | 2013-08-14 | 精工爱普生株式会社 | Liquid ejection device |
| CN103241012B (en) * | 2012-02-14 | 2016-11-23 | 精工爱普生株式会社 | Liquid injection apparatus |
| CN105150685A (en) * | 2015-06-15 | 2015-12-16 | 温州启昊激光科技有限公司 | High speed ink-jet digital printing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4983517B2 (en) | 2012-07-25 |
| JP2009083250A (en) | 2009-04-23 |
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Open date: 20090401 |