CN100391813C - Feeding device and recording device - Google Patents
Feeding device and recording device Download PDFInfo
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- CN100391813C CN100391813C CNB2004800018620A CN200480001862A CN100391813C CN 100391813 C CN100391813 C CN 100391813C CN B2004800018620 A CNB2004800018620 A CN B2004800018620A CN 200480001862 A CN200480001862 A CN 200480001862A CN 100391813 C CN100391813 C CN 100391813C
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Abstract
A feeding device, comprising a guide part guiding medium partly in contact with one side of the medium when the medium is fed. Since a frictional resistance occurring between one side of the medium and the guide part can be reduced, defective feeding such as bending and jamming of paper can be prevented from occurring. Accordingly, paper of various sizes can be fed securely.
Description
Technical field
The present invention relates to be used for the feedway of feeding medium and recording device and the liquid injection apparatus that each all comprises described feedway.
Background technology
Ink jet printer is can be in one of large-scale recording device of for example printing to the paper of the large-sizes such as A2 size of for example JIS as the A4 size of the JIS of medium, and it is available.But, because paper is heavier, thus identical with small-sized ink jet printer, utilize this large-scale ink jet printer, be difficult to supply with paper and injection (eject) paper to anterior from the rear portion.In other words, sheet feed stacker and walking on the front portion that paper disc is arranged on ink jet printer.The paper that is stored in the sheet feed stacker takes out by paper feed roller, and supplies with the both sides by the paper of edge guiding device guiding.
Edge guiding device on one side of paper can slide on the Width of paper, and is connected to the load that make to slide and changes according to the direction of slip of edge guiding device.In other words, when edge guiding device from the slide outside to the paper side and during the adjacent sheet side, the slip of edge guiding device load reduces, so that the edge guiding device slides smoothly.When supplying with paper, the slip of edge guiding device load increases, even make the lateral pressure that causes owing to paper side, the edge guiding device can not slide into the outside from paper side yet.Therefore, paper can be adjusted reliably by the edge guiding device, thereby can prevent from the skew to supply with paper (referring to JP-A-9-86676).
Above-mentioned ink jet printer of the prior art can print on the paper of large-size.Yet, if under the state of the entire portion of two edge guiding devices, guide such paper in the paper both sides, then between the paper both sides, friction drag occurs, and two edge guiding devices will become excessive, and for example paper break or paper obstruction etc. probably may take place supply with fault.
An object of the present invention is to supply with reliably the paper of various sizes.
Summary of the invention
To achieve these goals, provide a kind of feedway that is used for feeding medium, comprising: targeting part, be used for boot media, simultaneously in feeding medium part in abutting connection with a side of medium; Be used to supply the supply of media stored; Be used for only separating the disconnector of the top medium of the medium of being supplied; With the feeder that is used to supply with the medium after separating, wherein said targeting part so forms, make along with medium is proceeded to supply with by feeder after supply is finished supply, when being shifted in the gap of medium between disconnector and supply, the supply load that produces when medium and described targeting part contact with each other reduces, described targeting part forms and makes along with feeder continues feeding medium, part in abutting connection with medium reduces gradually, described targeting part be arranged on feeder near, and form the part that makes in abutting connection with medium and little by little reduce towards feeder.Therefore, can reduce the friction drag that between medium one side and targeting part, occurs, thereby can prevent that fault such as supply such as for example paper break or paper obstruction etc. from occurring.
Further, targeting part forms the step (step) in the guide piece of sliding block joint on the direction of the direction of the supply that is orthogonal to medium.Therefore, do not need targeting part as the separating part setting, thereby the quantity of parts does not increase, and can reduce the cost such as manufacturing, assembling of parts.
Further, described feedway comprises the supply that is used to supply media stored, be used for only separating the medium of being supplied top medium disconnector and be used to supply with the feeder of separating medium, and described targeting part so forms, make along with the continuation of feeder after the supply that discharges supply is supplied with, when being shifted in the gap of medium between disconnector and supply, the supply load that produces when medium and described targeting part contact with each other reduces.Therefore, if make medium away from supply, and only supplied with by feedway, then the contact resistance between medium and the targeting part reduces gradually, thereby can prevent that feedway and targeting part from causing the supply precision of medium to reduce.
And targeting part forms the continuation that makes along with the feedway feeding medium, reduces gradually near the part of medium.Therefore, can be easy to form targeting part, make to make where necessary the space to be set and the cost minimum is set.
Further, disconnector comprises the rough surface that is used for only separating top medium.Wherein, disconnector comprises the roller that is used for only separating top medium.Wherein, disconnector comprises the pawl that is used for only separating top medium.Therefore, comprise that the feedway of various disconnectors is provided with targeting part, and can improve the supply precision.
To achieve these goals, the recording device that a kind of feedway is provided is the recording device that is used at the enterprising line item of medium, and wherein, it comprises above-mentioned each feedway.Therefore, can be provided for providing the recording device of above-mentioned various advantages.
To achieve these goals, provide a kind of liquid injection apparatus, it is a kind of liquid injection apparatus that is used for atomizing of liquids to liquid jet medium, and wherein, it comprises above-mentioned each feedway.Therefore, can be provided for providing the liquid injection apparatus of above-mentioned various advantages.
Description of drawings
Fig. 1 is a transparent view, and the whole outward appearance of ink jet printer is shown from the front portion that tilts, and wherein said ink jet printer is one of them of recording device according to an embodiment of the invention.
Fig. 2 is the transparent view that the paper supply of the chopping machine among Fig. 1 is walked paper disc.
Fig. 3 is a transparent view, and the use pattern that paper supply among Fig. 2 is walked paper disc is shown.
Fig. 4 is a transparent view, and another use pattern that paper supply among Fig. 2 is walked paper disc is shown.
Fig. 5 is a side sectional view, and the in-built profile of the chopping machine among Fig. 1 is shown.
Fig. 6 illustrates the paper that is placed on the accumulator and the diagram of the contact condition between the paper feed roller.
Fig. 7 is a transparent view, and the details of paper supply paper feed part according to an embodiment of the invention is shown.
Fig. 8 is a transparent view, and the details of the principal part of the paper supply paper feed part among Fig. 7 is shown.
Fig. 9 is the front elevation of the part among Fig. 8.
Figure 10 is the lateral plan of the part among Fig. 8.
Figure 11 is a section drawing, and the inner structure of ink jet printer is shown, and wherein said ink jet printer comprises the separation member with roller, and realizes the rear portion automatic paper feeding.
Figure 12 is a transparent view, and the periphery of the reduction roll among Figure 11 is shown.
Figure 13 is the lateral plan of Figure 12.
Figure 14 is the back perspective view of Figure 12.
Figure 15 is a section drawing, and the inner structure of ink jet printer is shown, and wherein said ink jet printer comprises the separation member with roller, and realizes anterior automatic paper feeding.
Figure 16 is a section drawing, and the sheet feed cassette that comprises the separation member that has pawl is shown.
Figure 17 is the planar view of the sheet feed cassette among Figure 16.
Figure 18 is the application drawing of sheet feed cassette separation device when being placed in the ink jet printer.
Figure 19 is the planar view of Figure 18.
Figure 20 is the planar view that is placed on the sheet feed cassette in the ink jet printer.
Figure 21 is first diagram that the defeated paper state of the chopping machine among Fig. 1 is shown.
Figure 22 is second diagram that the defeated paper state of the chopping machine among Fig. 1 is shown.
The specific embodiment
To describe embodiments of the invention with reference to the accompanying drawings in detail.
Fig. 1 is a transparent view, and the whole outward appearance of ink jet printer is shown from the front portion that tilts, and wherein said ink jet printer is one of them of recording device according to an embodiment of the invention.Ink jet printer 100 is desk-top large-scale chopping machines, can print on the so-called cut paper of the large-sizes such as A2 size of for example JIS and coil paper in the A4 size that for example has JIS, and cover with the whole housing 101 that extends long cuboid at Width that roughly resembles.
Rectangular window 102 forms on the top of housing 101.The transparent or semitransparent window envelope 103 of window 102 usefulness covers.Window envelope 103 is connected to it is being rotated on direction of arrow shown in the figure in rotating shaft of top.By raising window envelope 103 and opening window 102, the user can pass through the handling labor of window 102 execution internal mechanisms etc.
The box storage compartment 104 that inserts and extract print cartridge forms on each side of the front portion of housing 101.Each print cartridge stores the stamping ink of every kind of color.The transparent or semitransparent lid of each box storage compartment 104 usefulness covers.Lid 105 is connected to it can be rotated on arrow b direction shown in the figure in the rotating shaft of bottom.Come separately retaining part by applying light lid 105, and open box storage compartment 104, the user can carry out more changing jobs of print cartridge etc.
The function part 110 that is used to send the printer operation order is arranged on the top of the box storage compartment on the right front portion of housing 101.Function part 110 comprises button 110, for example be used for opening/closing electric power power knob, be used for locating paper sheets top etc. and make China ink flow out the action button of (flush) etc. and carries out image processing etc. treatment button, be used for the liquid crystal panel 112 of show state etc.User's energy action button 111 is checked liquid crystal panel 112 simultaneously.
The tank stores part 106 of wherein inserting and extracting waste liquid tank 120 forms below the box storage compartment 104 on the right front portion of housing 101.When waste liquid tank 120 is stored in the clean of head unit 162 (referring to Fig. 5) and the useless China ink that when replacing ink cartridge, abandons.By extracting useless China ink jar 120 out, the user can carry out the work that abandons that accumulates in the useless China ink in useless black jar 120.
The paper-supply section 130 that is used to supply with coil paper is arranged on the rear portion of housing 101, so that upwards protrude backward.The coil paper retainer (not shown) that can put a coil paper above is arranged in the paper-supply section 130, and the lifting type coil paper that can the open and close lid 131 coil paper retainer (not shown) that are connected on the front portion that covers paper-supply section 130.By raising coil paper lid 131 and opening paper-supply section 130, the user can carry out the connection/separately work of coil paper.The end face of coil paper lid 131 forms the paper supply spigot surface, is used to realize the manual paper supply guiding of cut paper.
Paper supply paper feed part 140 is in the front, center of housing 101, that is, form between the double-type box storage compartment 104, wherein from described paper supply paper feed partly insert and extract the cut paper that is used to pile up before printing, cut paper after printing or the paper supply of coil paper walk paper disc 200.Paper supply paper feed part 140 also forms and is implemented in the manual paper supply that when transportation can not backfolding ground paper.
Paper supply is walked the front portion of paper disc 200 and is inserted in the paper supply paper feed part 140, and fixes so that paper supply is walked the mode of protruding at the back of paper disc 200.Paper supply is walked paper disc 200 and is formed box-like; Cut paper before printing is stacked on inside and stores, and the cut paper or the coil paper that spray after printing are stacked in the top.To the detailed structure that paper supply is walked paper disc 200 be described referring to Fig. 2 to 4.
Fig. 2 is a transparent view, from the bevelled front portion overall appearance that paper supply is walked paper disc 200 is shown.Paper supply walk paper disc 200 comprise form box-like sheet feed stacker 210 and form lid be used to cover sheet feed stacker 210 end face walk paper disc 230.Paper supply is walked paper disc 200 and is formed and make it to open and to shrink on paper supply and page orientation; When not using paper supply to walk paper disc 200, it can be stored compactly, using at that time, can use it for the cut paper of handling various sizes.
Fig. 3 and 4 is transparents view, illustrates and wherein places the paper supply paper feed part 140 that paper supply is walked paper disc 200.In order to pile up cut paper, coil paper targeting part 240 is stored on the end face of paper feed spare 239a, that is, make that the end face of paper feed spare 239a is the plane, as shown in Figure 3.Therefore, to be stacked on by the cross section smoothly be on the paper feed receiving plane that forms of the end face of the side of the L shaped targeting part 145 of letter and bottom surface and paper feed spare 239a to 239d to the cut paper that sprays by transport roller 155 (referring to Fig. 5).
Foam-rubber cushion 145a is placed on the bottom of targeting part 145.After placing first cut paper, when spraying second cut paper, foam-rubber cushion 145a has antiskid function, is used to prevent that the front end of second cut paper from promoting (prompt) first cut paper and promoting first cut paper to leave the paper feed receiving plane.
On the other hand, in order to pile up coil paper, the user is placed on its finger on the long relatively side of first guide plate 241 of the coil paper targeting part 240 on the end face that is stored in paper feed spare 239a, and makes first guide plate 241 towards posterior rotation, as shown in Figure 4.Then, second guide plate 242 is spurred by first guide plate 241, distolateral being picked up on the length direction, and the groove 239aa that the distolateral relatively edge on the length direction forms on the end face of paper feed spare 239a slides backward.The user rotates first guide plate 241, and the angle between first guide plate 241 and second guide plate 242 becomes acute angle.
Therefore, second guide plate 242 becomes as a slide plate (slide), the distolateral summit near targeting part one side on the length direction.Like this, if the paper that sprays by transport roller curls, then front end can not be stuck in the targeting part side, and slides being similar on second guide plate 242 of slide plate, and is directed to the top surface side of paper feed spare 239a to 239d.Therefore, coil paper is stacked on the end face of the paper feed receiving plane that formed by second guide plate 242 and paper feed spare 239a to 239d smoothly.
Fig. 5 is a side sectional view, and the in-built profile of the ink jet printer 100 among Fig. 1 is shown.Paper supply paper feed part 140, transport section 150, recording section 160 etc. are arranged in the housing 101.Accumulator 141, paper feed roller 142, separation member 143 that is used for supplying with cut paper etc. is arranged on paper supply paper feed part 140.Can place the plane of cut paper above accumulator 141 forms, and be arranged so that contiguous paper feed roller 142 of an end and separation member 143, opposite end next-door neighbour's paper supply is walked the bottom of the sheet feed stacker 210 of paper disc 200.The opposite end that one end is connected to the compression spring 144 of housing 101 bottoms is connected to accumulator 141 back sides on one is distolateral, and when compression spring 144 launches and shrink, and this is distolateral to rotate on distolateral.
The cross section of paper feed roller 142 forms alphabetical D shape, and a part disconnects, and intermittently rotates, and transports cut paper on accumulator 141 with friction.Separation member 143 has the end face that forms rough surface, and when many cut papers transmitted by paper feed roller 142, separation member 143 separated the bottom cut paper with friction with the top cut paper.Here, will be placed on cut paper on the accumulator 141 and the relation between the paper feed roller 142 referring to the accompanying drawing discussion.
Fig. 6 illustrates the paper that is placed on the accumulator 141 and the diagram of the contact condition between the paper feed roller 142.Fig. 6 (A) illustrates the maximum cut paper P of number and is placed on situation on the accumulator 141.In this case, adjust, make when accumulator 141 moves up, top cut paper P and does not contact with the breaking part of paper feed roller 142 at least on circular arc starting point 142a and afterwards and circumferential contact.
Fig. 6 (B) illustrates the minimum cut paper P1 of number () and is placed on the situation on the accumulator 141.In this case, adjust, make when accumulator 141 moves up, cut paper P contacts with the some 142b that rotates a little from paper feed roller 142.Contact point 142b is the point that makes that girth a from contact point 142b to circular arc terminal point 142c becomes and equates with spacing from the front end ps of paper P1 to the contact point 151a its secondary roller 151 and the driven voller 152a.
When making above-mentioned adjustment, be equal to or less than maximum number if be placed on the number of cut paper P on the accumulator 141, then arrive at contact point 151a between its secondary roller 151 and the driven voller 152a up to top cut paper P1, cut paper P1 just discharges from paper feed roller 142, thereby cut paper P1 can be sent to secondary roller 151 reliably, and can eliminate the paper supply mistake.
Be used for transmitting secondary roller 151 and driven voller 152a, 152b, 152c, feeding-in roll 153 and driven voller 154 thereof, transport roller 155, the serrated roller 156 of paper, the acquisition sensor 157a that is used to survey paper and 157b etc. and be arranged on transporting part 150.In order to be ejected into away paper disc 230 from the cut paper that sheet feed stacker 210 is supplied with, secondary roller 151 is similar to letter U shape reverse transfer cut paper, and cut paper is clipped between secondary roller 151 and driven voller 152a, 152b, the 152c simultaneously.
The cut paper of feeding-in roll 153 transmission reverse transfer or the coil paper of supply are to platen 163, and paper clamp is between feeding-in roll 153 and driven voller 154 simultaneously.Transport roller 153 sprays paper by platen 163 to walking on the paper disc 230, and paper clamp is between transport roller 155 and serrated roller 156 simultaneously.Acquisition sensor 157a surveys the crooked removal transmission quantity of the cut paper of supplying with.Transmission quantity in the top of the cut paper of acquisition sensor 157b detection location reverse transfer or the coil paper of transmission.
Fig. 7 is a transparent view, and the detailed structure of the above-mentioned paper supply paper feed part 140 that comprises characteristic of the present invention is shown.Accumulator 141 comprises smooth bearing surface 141a and right hand edge guides 141b and left hand edge guides (guide piece) 141c that is used to support the cut paper face, wherein in right hand edge guides and the left hand edge guides each all to resemble letter L shaped, be used for the both sides of the cut paper of guide support on bearing surface 141a.See that from the front portion right hand edge guides 141b that goes up on the right is fixedly connected to the right side of bearing surface 141a, and see that from the front portion left hand edge guides 141c on the on the left side is connected to the right side slidably from the left side of bearing surface 141a.When left hand edge guides 141c slided, the A4 size of JIS can be supported reliably to the paper of A2 size, and can accurately guide the both sides of paper.
And, the entire portion of the sweep of right hand edge guides 141b is carried out in abutting connection with the right side of the cut paper that will be directed, and edge guiding device (targeting part) 141d, form step with the degree of depth of the sweep of left hand edge guides 141c characteristic of the present invention partly in abutting connection with the left side of the cut paper that will be directed.In other words, edge guiding device 141d has and makes the left side of cut paper away from the function of the sweep of left hand edge guides 141c, so that prevent the entire portion of cut paper left side in abutting connection with the sweep of left hand edge guides 141c.
When cut paper is supplied with by paper feed roller 142, if cut paper is directed to its both sides in the state of the entire portion of the sweep of two edge guiding device 141b and 141c, then the friction drag that occurs between the sweep of the both sides of cut paper and two edge guiding device 141b and 141c will become excessive, and may take place probably that for example paper breaks or paper obstruction etc. supplied with fault.Yet, be provided with edge guiding device 141d, thus cut paper is directed to the state of entire portion of the sweep of its right side joining edge guides 141b, cut paper is directed to the state of its left part joining edge guides 141d, thereby friction drag reduces, and can prevent that for example paper breaks or paper obstruction etc. supplied with fault.
And when transmission cut paper and cut paper were clipped between secondary roller 151 and driven voller 152a, 152b and the 152c in proper order, cut paper was reverse gradually as letter U.Therefore, be arranged on the cut paper partial floating (float) under the paper feed roller 142, move closer to the breaking part of paper feed roller 142; Simultaneously, the cut paper of joining edge guides 141d part is also floated.As shown in Figure 7, because that edge guiding device 141d roughly forms triangle is tabular, so along with described partial floating, the length of the cut paper of joining edge guides 141d part shortens gradually.
Therefore, when the transmission cut paper while, cut paper was clipped between secondary roller 151 and driven voller 152a, 152b and the 152c in proper order, the friction drag of the cut paper part of joining edge guides 141d reduces gradually, thereby can keep high supply precision, also can keep high registration accuracy.The shape of edge guiding device 141d is not limited to the general triangular formula, if its shape allows the length of the part of joining edge guides 141d when cut paper floats to shorten gradually, for example fan-shaped form or tapered in form etc. roughly also can provide similar advantage.
The paper feed roller 142 and the separation member 143 that are arranged among the right hand edge guides 141b are fixedly connected to the right side of bearing surface 141a, and are arranged on paper feed roller 142 among the left hand edge guides 141c and separation member 143 and are connected to the right side slidably from the left side of bearing surface 141a.Paper feed roller of the prior art is set to only supply with cut paper one side, and has less width, but paper feed roller 142 is set to supply with the both sides of cut paper, and has the width of broad.Therefore, when the contact pressure that applies per unit area on paper from paper feed roller 142 when paper is supplied with reduces, whole pressure increases, thereby the cut paper of broad, A2 size of JIS etc. for example, can supply with as the crow flies, and especially, can suppress the damage that causes by paper feed roller 142 the printing dedicated paper.
Two help rolls 147 are arranged so that between two paper feed rollers 142 that preset space length is arranged.At least in three spaces that the identical compression spring on both sides 148 inserts between the roller 142 and 147.Because help roll 147 can be pushed down the centre portion of the cut paper of supply, thus for example cut paper deflection of the broads such as paper of the A2 size of JIS can be prevented, and can supply with paper as the crow flies.
Because 148 of compression springs promote roller 142 and 147 together, so if left hand edge guides 141c slides on bearing surface 141a, to move left paper feed roller 142, then 147 pages of help rolls are corresponding mobile, simultaneously the spaces between the linear change roller 142 and 147.Therefore, can push down the centre portion of the paper of various sizes reliably, and can prevent deflection.
Fig. 8 to 10 is transparent view, front elevation and lateral plan, and the details of paper feed roller 142 and separation member 143 is shown.The end face 143a of separation member 143 forms the inclined-plane, places separating pad 149 on described inclined-plane.Separates walls 143c forms in the end face 143a of separation member 143 and the border between the anterior 143b.When multilayer (multiply) was supplied with the cut paper of being extracted out by paper feed roller 142, separates walls 143c or separating pad 149 were that thickness separates top sheet according to paper type.
Yet, find that the more easily curved cut paper of number is the problem that thick cut paper enters above-mentioned gap, therefore this gap is set at narrower (about 1mm).Therefore, can prevent that the more thick cut paper of number from entering the gap, but in thinly-sliced paper, a problem occur.That is, because thinly-sliced paper is easy to break, both sides K/UP usually, although therefore the center of thinly-sliced paper can enter above-mentioned gap, because the obstruction of paper feed roller 142, both sides can not enter the gap.In this case, only spur the center of cut paper, thus the accidental situation that bends or cut both sides.
Then, separates walls 143c forms and makes the height on the summit on a little higher than central side of height on the summit on the left end side of separates walls 143c of height, left separating pad 147 on the summit on the right-hand member side of separates walls 143c of right separating pad 147, the right-hand member side of separates walls 143c and left end side stop the more thick cut paper of number to enter the gap thus, if and the both sides K/UP, then thinly-sliced paper can enter the gap smoothly.
In this embodiment, such situation has been described, wherein the edge guiding device 141d of characteristic of the present invention be applied to comprise have rough surface separation member 143 (promptly, separating pad 149 is placed on the separation member 143 on the end face 143a) anterior automatic paper feeding type ink jet printer 100, but the invention is not restricted to this.For example, edge guiding device 141d can be applicable to the front side and the rear side of ink jet printer, and wherein said ink jet printer comprises the separation member with roller, and realizes anterior automatic paper feeding and rear portion automatic paper feeding; Or can be applicable to anterior automatic paper feeding type ink jet printer, wherein said ink jet printer uses the sheet feed cassette that comprises the separation member with pawl, below described referring to accompanying drawing:
Figure 11 is a section drawing, and the inner structure of ink jet printer is shown, and wherein said ink jet printer comprises the separation member with roller, and realizes anterior automatic paper feeding and rear portion automatic paper feeding.In ink jet printer 300, paper-supply section 320 is arranged on the back top of chopping machine main part 310, and paper feed part 330 is to chopping machine main part 310 anterior settings.The sheet feed stacker 321 that can pile up a plurality of paper P above is arranged in the paper-supply section 320.The paper carriage 322 that is used for supporting a plurality of paper P is removably disposed in sheet feed stacker 321.Above-mentioned edge guiding device 141d forms on the lower wall of sheet feed stacker 321.Paper feed roller 323 is arranged on sheet feed stacker 321 belows with the reduction roll 324 relative with paper feed roller 323.
Figure 12 is a transparent view, and the periphery of the reduction roll 324 among Figure 11 is shown, and Figure 13 is the lateral plan of Figure 12, and Figure 14 is the back perspective view of Figure 12.As shown in Figure 12 and 13, paper feed roller 323 is that the cross section is the roller of D type, and comprises: outer surface 323a, can form sandwich portion, that is, and the drawing-in point N that cooperates with the outer surface of reduction roll 324; The flat 323b of the fracture as the plane, and do not form drawing-in point between the outer surface of described partial sum reduction roll 324.
As shown in Figure 12 and 13, reduction roll 324 is the cylindrical rollers with horizontal rotating shaft, and be supported on the reduction roll support frame 328 that is used to rotate, receive because the action of wind spring 329 during at reduction roll support frame 328 in the thrust of rotating around the pivot shaft 328a, shift onto on paper feed roller 323 1 sides, as shown in Figure 14 always.When only supplying with a piece of paper P, reduction roll 324 is along with it is driven and rotate by paper feed roller 323; Supply with two or more during plurality of sheets of paper P in multilayer, reduction roll 324 rotates on the direction identical with paper feed roller 323, along paper supply direction upstream paper P is turned back under the top sheet P.
As shown in Figure 12, reduction roll 324 forms on the both sides with two vertical parts 341, wherein said vertical part is formed by the framework that supports paper feed roller 323, and paper P makes from the paper injection passage L of sheet feed stacker 321 1 sides by the part directly over the vertical part 341 by forming, and supplies with paper feed roller 323 1 sides.Recessed gulf (bay) part 342 that is used to make paper P enter the space between roller 323 and 324 is in the midpoint of paper injection passage L and just formed before the drawing-in point N between paper feed roller 323 and the reduction roll 324.Relative with both sides and form from both sides towards two recessed gulf adjustment part 343 upper ends that recessed gulf part 342 is extended by two vertical parts 341, and each recessed gulf regulating part 343 all comprise the number that is used for adjusting the paper P that is directed to recessed gulf part 342 in abutting connection with adjustment member 344 and extend to the seal paper 345 of drawing-in point N one side from the upper end of adjacency adjustment member 344.
As shown in Figure 13, almost form, and make gap 346 that several paper P pass through between the outer surface 323a of the upper end of adjacency adjustment member 344 and paper feed roller 323, form perpendicular to direction along paper injection passage L transmission paper in abutting connection with adjustment member 344.According to this structure, if transmission plurality of sheets of paper P, the paper P that then is arranged on several paper P belows that can be by gap 346 in abutting connection with adjacency adjustment member 344, so prevents that paper P is moved further at front end.Therefore, the number of the paper P in the space between supply paper feed roller 323 and the reduction roll 324 is restricted.
As shown in Figure 13, paper injection face 345 forms and makes form convex surface on upside, and along with it moves forward, the distance between paper feed roller 323 and outer surface 323a and the paper injection face 345 becomes narrower.Therefore, before the action by paper feed roller 323 and reduction roll 324 separates paper, the leading section of paper P that can be by the mobile multilayer transmission of the action of convex surface, thus can be provided at the preparation separation function that carries out the paper separation in the reduction roll 324.
When forming paper injection face 345, the front end that can prevent several paper P by gap 346 is by gap 346 back downwards, contact and be bent with the outer surface of reduction roll 324.Therefore, paper injection face 345 extends abundant length and forms in the paper transmission direction, enter this unfavoured state so that prevent the front end of paper P.
In this structure, when the outer surface engaging friction of the paper feed roller 323 that is arranged on sheet feed stacker 321 belows contacts, take out the paper P in the sheet feed stacker 321.When the plurality of sheets of paper P that supply with to take out, only separate top sheet P, and reduction roll 324 cooperations relative with paper feed roller 323 are transmitted.The paper P that is transmitted arrives at the feeding-in roll of being made up of paper feeding drive roll 325 and paper feeding driven voller 326 on the other side on the upside 327, and send into the platen 311 that is arranged in paper feed roller 327 downstreams, carry out at record by drive system simultaneously and carry out accurate paper supply operation in the technology.When the paper P that supplies with passes through platen 311 tops smoothly, carry out the high quality records by the head unit 313 that is placed on the carriage 312.
When supplying with paper P as mentioned above, be arranged on the paper partial floating under the paper feed roller 323, move closer to the flat 323b of paper feed roller 323; Simultaneously, the paper of joining edge guides 141d part is also floated.Because it is tabular that edge guiding device 141d roughly forms triangle, so along with described partial floating, the length of the paper of joining edge guides 141d part shortens gradually.Therefore, when supplying with paper, the friction drag of the paper of joining edge guides 141d part reduces gradually, thereby can keep high supply precision, also can keep high registration accuracy.The paper P of record is drawn out of, and sprays by the transport roller of being made up of paper feed drive roll 331 and paper feed serrated roller 332 on the other side on the upside 333.
Figure 15 is a section drawing, and the inner structure of ink jet printer is shown, and wherein said ink jet printer comprises the separation member with roller, and realizes anterior automatic paper feeding.In ink jet printer 400, the sheet feed cassette 401 that wherein can pile up a large amount of paper P is removably disposed on the following front portion of chopping machine main part 410, and the paper feed piler (stacker) 402 that the paper P behind the record is injected into is arranged on the rear portion of chopping machine main part 410.In sheet feed cassette 401, be used for promoting the paper P that is stacked on sheet feed cassette 401 and be introduced into accumulator 403 in the feed path and can swingingly be provided with oscillating axle as the swing strong point.Above-mentioned edge guiding device 141d forms on the sidewall of the chopping machine main part 410 on the margin side of the front end of the paper P that is promoted by accumulator 403.
In this structure and since on push away spring 405 thrust upwards the accumulator 403 of the swing top sheet P that will pile up be pressed on the pick-up roller 406 on the degree of depth that is arranged on sheet feed cassette 401.Top sheet P extracts out in sheet feed cassette 401 by the rotation of pick-up roller 406, and is sent to paper feed roller 411 and the reduction roll 412 that is arranged in the chopping machine main part 410 in the paper transmission direction.High friction material is placed on the part that is arranged on the accumulator 403 under the pick-up roller 406, moves to prevent the paper P that is stacked on the top sheet below.
Here, the rotating drive power of unshowned drive motor is transferred to paper feed roller 411, then drives paper feed roller 411 on the paper supply rotation direction.On the other hand, reduction roll 412 is connected to and makes it be actuated to rotate in the state that gives rotary resistance, and may be pressed on the paper feed roller 411 when the thrust that receives from thrust unit.The rotary resistance of reduction roll 412 is set to littler than the friction drag of the peripheral surface of paper feed roller 411, and is bigger than the friction drag between the paper P of multilayer supply.
Therefore, if only a piece of paper P is supplied with the space between paper feed roller 411 and the reduction roll 412, then reduction roll 412 receptions are from the pressure and the rotational force of paper feed roller 411, and be actuated on the paper supply rotation direction, rotate, and the paper P that will be clipped between paper feed roller 411 and the reduction roll 412 supplies with feeding-in roll 413.On the other hand, if plurality of sheets of paper P multilayer is supplied in the space between paper feed roller 411 and the reduction roll 412, then reduction roll 412 can not rotate, thereby along with the rotation of paper feed roller 411, only supply with top sheet P, and the paper P under the top sheet remains on this position.Unshowned back bar begins return, and remaining paper P is returned the inside of sheet feed cassette 401.
When supplying with paper P as mentioned above, be arranged on the paper partial floating under the paper feed roller 411, and move closer to the flat 411b of paper feed roller 411; Simultaneously, the paper of joining edge guides 141d part is also floated.Because it is tabular that edge guiding device 141d roughly forms triangle, so along with described partial floating, the length of the paper of joining edge guides 141d part shortens gradually.Therefore, when supplying with paper, the friction drag of the paper of joining edge guides 141d part reduces gradually, thereby can keep high supply precision, also can keep high registration accuracy.Utilize above-mentioned ink jet printer 100 and 300 executive loggings and paper to spray.
Figure 16 is a side cross-sectional view, and the sheet feed cassette that comprises the separation member that has pawl is shown.Figure 17 is the planar view of sheet feed cassette.In sheet feed cassette 1, pair of separated claw-plate 2 is arranged on the Width of paper, so that by all mobile on the direction of A on the shoulders with the integrated disengaging pawl fulcrum 4 in the side plate of sheet feed cassette 1 inside.Each disengaging pawl drive plate 7 all is placed on the side plate in-to-in disengaging pawl drive plate fulcrum 8 that is formed on sheet feed cassette 1 rotationally.Disengaging pawl drive plate 7 by the disengaging pawl pilot pin 3 integrated with separating claw-plate 2 with separate claw-plate 2 and be connected.When disengaging pawl drive plate 7 rotates on disengaging pawl drive plate fulcrum 8, separate claw-plate 2 and on the direction of A on the shoulders, move.
When sheet feed cassette 1 is not placed in the ink jet printer, disengaging pawl drive plate 7 is set in position among Figure 16 by screw twisted wind spring 9.Therefore, separate claw-plate 2 and on the anterior direction of sheet feed cassette 1, move, and disengaging pawl 2-a is stored on the front portion of sheet feed cassette 1.When sheet feed cassette 1 is not placed in the ink jet printer, pushes away spring 6 on the push pedal 5 compression paper supplies on the paper supply, and be set in the position among Figure 16.
Under this state, this to about separate claw-plate 2 disengaging pawl part 2-a be stored in the front portion of sheet feed cassette 1, as shown in Figure 17.Simultaneously, when inserting paper, the user stop the assembly of insertion not in the paper setting position that limits by paper injection spare 10.Therefore, may insert paper from each direction, and be not limited to the paper that inserts from sheet feed cassette 1 rear portion of the prior art, and the insertion of paper also is level and smooth, thereby, then can place paper reliably if the user easily replenishes into sheet feed cassette 1 with paper.When additional, paper can not hinder disengaging pawl part 2-a, and paper distortion is also less; Not only improve transmittability, and can greatly improve the paper quality behind the record.
Figure 18 is the application drawing of sheet feed cassette separation device when being placed in the ink jet printer, and Figure 19 is a planar view, and Figure 20 is the planar view that is placed on the sheet feed cassette 1 in the ink jet printer.When on the direction of arrow shown in Figure 18 sheet feed cassette 1 being put into ink jet printer 400, the main part connecting bridge 7-a of disengaging pawl drive plate 7 at first places disengaging pawl adjusting lever 11 in the opening in abutting connection with the sheet feed cassette that is installed in ink jet printer 400.Simultaneously, push pedal on the paper supply 5 is arranged among the figure in the position, on paper feed roller 12 and paper supply, pushes away spring 6 with setting pressure.
Under this state, this passes through main part connecting bridge 7-a in abutting connection with disengaging pawl adjusting lever 11 to left and right sides disengaging pawl drive plate 7.If the user so firmly with sheet feed cassette 1 from then on state push in the ink jet printer 400, then disengaging pawl adjusting lever 11 rotates disengaging pawl drive plates 7 under the power of screw twisted wind spring 9, thereby, separate claw-plate 2 and also slide into the rear portion of sheet feed cassette 1, and be fixed.Under this state, as shown in Figure 20, separate claw-plate 2 and move to the rear portion, and its disengaging pawl 2-a enters the paper placement location of being represented by arrow among the figure, and be fixed in the state of the both sides of pushing down the paper forward position from the state that they are arranged in sheet feed cassette 1 front portion.Therefore, be placed on the appropriate location of at every turn only transmitting a piece of paper, just supply with paper reliably thereby may need not the multilayer supply with separating claw-plate 2.
To the operation of printing be discussed on cut paper in the ink jet printer 100 with this structure.When cut paper P is stacked on the paper supply that is placed in the paper supply paper feed part 140 and walks in the sheet feed stacker 210 of paper disc 200, because the machinery of compression spring 144 recovers the rotational synchronization with paper feed roller 142, so along with moving on the accumulator 141, the paper bundle is pressed on the paper feed roller 142, and only cut paper P in top is separated by separation member 143, and sends in the transporting part 150.
As shown in Figure 21 (A), when the cut paper P that supplies with arrives at contact point 151a between secondary roller 151 and the driven voller 152a thereof, carry out the crooked removal of cut paper P.Also can be according to paper sheet thickness, with diverse ways as crooked removal method.In other words, to the same thin or cut paper thinner than common paper with common paper, adopt following method: the forward position of cut paper only has any to be engaged in the space between secondary roller 151 and the driven voller 152a thereof, follow roller 151 and 152a backward rotation, so that cut paper is lax, thereby feasible forward position of carrying out the cut paper of crooked removal flattens.
On the other hand, the cut paper for thicker than common paper adopts following method: make the cut paper front end in abutting connection with the contact point 151a between secondary roller 151 and the driven voller 152a thereof, paper feed roller 142 is slided, flatten so that carry out the forward position of the cut paper of crooked removal.Mesh volume and adjacency amount are surveyed by acquisition sensor 157a, and control crooked removal according to the detection amount.
Adopt the reason of distinct methods to be like this according to paper sheet thickness, thinly-sliced paper is not hard, thereby probably paper feed roller 142 transmits cut paper, and does not slide on cut paper, provide thick cut paper by thinly-sliced paper is sticked together, thereby probably when roller 151 and 152a backward rotation, may peel off.
The cut paper P that finishes crooked removal is clipped between the secondary roller 151 that driven by unshowned paper pushing motor and its driven voller 152a, 152b, the 152c, and on the U-shaped passage oppositely, that is, and with paper supply side in the opposite direction on transmission.As shown in Figure 21 (B), when the front end of cut paper P arrives at the detecting location DP of acquisition sensor 157b, carry out the top of cut paper P, the location of printing initiating position.
In other words, transmission quantity is surveyed by acquisition sensor 157b, up to the front end of cut paper P from detecting location DP by the space between feeding-in roll 153 and its driven voller 154, and arrive at position location, the top HP shown in Figure 22 (A), and according to location, detection amount control top.Carry out by the acquisition sensor 157a that is arranged on secondary roller 151 upstreams the location, top in the prior art.Yet carry out by the acquisition sensor 157b that is arranged on secondary roller 151 downstreams the location, top, thereby the detection amount can be very little, particularly can eliminate the top position error that is caused by paper sheet thickness, and can improve the top accuracy of positioning.
Then, the cut paper P that finishes the location, top is transferred to record part 160, and cut paper is clipped between the feeding-in roll 153 and driven voller 154 thereof that is driven by unshowned paper pushing motor simultaneously.Therefore, cut paper P is clipped between secondary roller 151 and driven voller 152a, 152b and the 152c causes the transmission precision variation, thereby as shown in Figure 22 (B), discharge driven voller 152a, 152b and 152c from secondary roller 151.
The cut paper P of transmission is drawn onto on the platen 163 by unshowned aspirating pump, makes to flatten, and prints by the head unit 162 that is installed on the carriage 161, and wherein said carriage 161 is by unshowned tray motor and synchronous belt scanning.Simultaneously, the control part of ink-jet recording apparatus 100 is supplied with head unit 162 with the China ink of every kind of color from the print cartridge that for example yellow, pale yellow, deep red red, purple light, cyan, shallow green grass or young crops and black are total up to seven kinds of colors, control the injection timing of the China ink of every kind of color, and driven bracket 161 and feeding-in roll 153, to carry out point-device ink dot control, halftone process etc.The cut paper P that finishes printing is ejected into paper supply paper feed part 140, and simultaneously cut paper P is clipped between the transport roller 155 and serrated roller 156 that is driven by unshowned paper pushing motor, and is stacked on paper supply and walks walking on the paper disc 230 of paper disc 200.
As mentioned above, edge guiding device 141d is arranged in the paper supply paper feed part 140 of present embodiment, and wherein said edge guiding device 141d is used for when supplying with cut paper part channeling conduct during the left side of cut paper.Therefore, can reduce the friction drag that appearing between cut paper left side and the edge guiding device 141d, thereby can prevent that for example paper breaks or paper supply fault such as paper obstruction takes place.Edge guiding device 141d is integrally formed as the step and the left hand edge guides 141c that protrude into paper one side, left hand edge guides 141c sliding block joint on the direction that is orthogonal to the paper supply direction wherein, thereby do not need to reduce parts manufacturing, assembly cost as the separating part setting.Edge guiding device 141d can form on the right hand edge guides 141b on the fixation side, or can form on two edge guiding device 141b and 141c.
The present invention also can be applicable to facsimile apparatus, duplicator etc., as long as it is the recording device that comprises medium transmission equipment.Be not limited to recording device, as be used for from jet head liquid spray the liquid be suitable for replacing the ink purpose to the liquid jet medium with the liquid injection apparatus of liquid deposition on liquid jet medium, the present invention also can be applicable to such equipment, the colorant that comprises the colour filter that is used to make LCDs sprays first-class, electrode material (conductive paste) injector head that is used for the electrode formation of organic el panel, face light emission display screen (FED) etc., be used for the biological organic substance injector head that biochip is made, the sample that is used for accurate suction pipe sprays first-class.
Claims (6)
1. feedway that is used for feeding medium comprises:
Targeting part is used for boot media, and while part adjoining farmland neighbour in the process of feeding medium connects a side of medium;
Be used to supply the supply of media stored;
Be used for only separating the disconnector of the top medium of the medium of being supplied; With
Be used to supply with the feeder of the medium after the separation, wherein
Described targeting part so forms, make along with medium is proceeded to supply with by feeder after supply is finished supply, when being shifted in the gap of medium between disconnector and supply, the supply load that produces when medium and described targeting part contact with each other reduces
Described targeting part forms and makes along with feeder continues feeding medium, reduces gradually in abutting connection with the part of medium,
Described targeting part be arranged on feeder near, and form the part that makes in abutting connection with medium and little by little reduce towards feeder.
2. feedway according to claim 1 is characterized in that, described targeting part forms the step in the guide piece of sliding block joint on the direction of the direction of the supply that is orthogonal to medium.
3. feedway according to claim 1 is characterized in that described disconnector comprises the rough surface that is used for only separating top medium.
4. feedway according to claim 1 is characterized in that described disconnector comprises the roller that is used for only separating top medium.
5. a recording device is characterized in that, described recording device comprises according to arbitrary described feedway in the claim 1 to 4.
6. a liquid injection apparatus is characterized in that, described liquid injection apparatus comprises according to arbitrary described feedway in the claim 1 to 4.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003126181 | 2003-05-01 | ||
| JP126181/2003 | 2003-05-01 | ||
| JP132620/2004 | 2004-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1723163A CN1723163A (en) | 2006-01-18 |
| CN100391813C true CN100391813C (en) | 2008-06-04 |
Family
ID=35912821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800018620A Expired - Fee Related CN100391813C (en) | 2003-05-01 | 2004-04-30 | Feeding device and recording device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100391813C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030204A (en) * | 2009-10-08 | 2011-04-27 | 精工爱普生株式会社 | Medium feeding device and recording apparatus |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4950014B2 (en) * | 2007-12-09 | 2012-06-13 | 株式会社リコー | Sheet conveying apparatus, image forming apparatus equipped with the same, electrophotographic copying machine, printer, facsimile, digital multifunction machine |
| JP2011190001A (en) * | 2010-03-12 | 2011-09-29 | Seiko Epson Corp | Feeding device and recording device |
| US10549937B2 (en) * | 2016-01-29 | 2020-02-04 | Hewlett-Packard Development Company, L.P. | Device including separator |
| CN117863734B (en) * | 2024-03-11 | 2024-05-07 | 安徽力宇电脑设备制造有限责任公司 | Spray painting machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0392370A (en) * | 1989-09-04 | 1991-04-17 | Oki Electric Ind Co Ltd | Method for controlling ticket printing apparatus |
| JPH06156750A (en) * | 1992-11-27 | 1994-06-03 | Minolta Camera Co Ltd | Paper feeding device |
| JP2000007161A (en) * | 1998-04-24 | 2000-01-11 | Ricoh Co Ltd | Sheet feed tray |
| JP2001335160A (en) * | 2000-05-25 | 2001-12-04 | Seiko Epson Corp | Paper guide, paper feeder and recorder |
| JP2002128288A (en) * | 2000-09-21 | 2002-05-09 | Hewlett Packard Co <Hp> | Medium loader insert and printer |
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2004
- 2004-04-30 CN CNB2004800018620A patent/CN100391813C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0392370A (en) * | 1989-09-04 | 1991-04-17 | Oki Electric Ind Co Ltd | Method for controlling ticket printing apparatus |
| JPH06156750A (en) * | 1992-11-27 | 1994-06-03 | Minolta Camera Co Ltd | Paper feeding device |
| JP2000007161A (en) * | 1998-04-24 | 2000-01-11 | Ricoh Co Ltd | Sheet feed tray |
| JP2001335160A (en) * | 2000-05-25 | 2001-12-04 | Seiko Epson Corp | Paper guide, paper feeder and recorder |
| JP2002128288A (en) * | 2000-09-21 | 2002-05-09 | Hewlett Packard Co <Hp> | Medium loader insert and printer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030204A (en) * | 2009-10-08 | 2011-04-27 | 精工爱普生株式会社 | Medium feeding device and recording apparatus |
| CN102030204B (en) * | 2009-10-08 | 2014-07-23 | 精工爱普生株式会社 | Medium feeding device and recording apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1723163A (en) | 2006-01-18 |
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