CN1029218C

CN1029218C - Automatic paper feeding device

Info

Publication number: CN1029218C
Application number: CN 91101484
Authority: CN
Inventors: 清原武彦
Original assignee: Canon Inc
Current assignee: Canon Inc
Priority date: 1990-03-12
Filing date: 1991-03-12
Publication date: 1995-07-05
Anticipated expiration: 2006-03-12
Also published as: CN1054751A

Abstract

An automatic paper feed apparatus includes a sheet stacking device for stacking and storing a plurality of sheets, a rotary paper feed device brought into contact with the sheet to feed it, a biasing device for biasing the sheets stacked toward the rotary paper feed device, a separator having an inclined surface for bringing the sheet fed into contact with the inclined surface to separate only one sheet and supply the separated one sheet to the downstream side, and a maintaining device, brought into contact with the uppermost surface for maintaining the uppermost sheet at a position corresponding to the inclined surface against a biasing force of the biasing device.

Description

Automatic paper feeding device

The present invention relates to a kind of with many separation of cargo-carring log sheet (cut paper), be sent to the automatic paper feeding device of handling parts such as recording portion.

The recording device of chopping machine, manifolder, facsimile apparatus etc. is the information that adopts according to record, by the energy generation body of activation record head, picture record is upward constituted at log sheets such as paper and sheet plastic (recording materials).Above-mentioned recording device can be divided into ink jet type, line formula dot type, hot type, laser beam formula or the like according to recording mode.In addition, the log sheet that uses in the recording device except that common paper, also has ground paper such as postcard and envelope, special paper such as sheet plastic.

The supply of log sheet also can automatically be sent into by automatic paper feeding device except inserting by hand.Above-mentioned automatic paper feeding device generally has the donor rollers of making revolution, sends the paper supply drive division of log sheet and the paper loading device that keeps loading log sheet.With the system synchronization of transporting of recording device,, realize more than of log sheets are separated paper supply by driving above-mentioned paper supply drive division.In addition, in automatic paper feeding device, the built-in in the recording device of being contained in is arranged and load and unload the outer-installed type that is installed with freely.

As above such automatic paper feeding device, comprising with supply-roll rotating donor rollers simultaneously; The paper that can load many log sheets loads plate; Compose gesture by this paper is loaded plate to above-mentioned donor rollers, the spring that above-mentioned log sheet can be pressed on this donor rollers is composed the gesture device; With by constitutors such as the disengagement gears with the inclined-plane that climbs in the direction of the supply the place ahead that is arranged on above-mentioned donor rollers and known.

, state in the use in the automatic paper feeding device of disengagement gear, different during with the use disengaging pawl, usually loaded paper must be pressed on the donor rollers.Its reason is, if contact force is not enough or when not having, then the paper below second can float and climbs up the inclined-plane, is difficult to many separation.Furtherly,, draw the paper below second easily owing to a piece of paper of introducing with the conveyer of recording device, as reason, overlapping the sending of meeting occurrence record paper.

On the one hand, really log sheet is introduced for the roller that transports with recording device, the friction drag (braking) when above-mentioned donor rollers is stopped not to have or is very slight.

Therefore, in the conventional version of this automatic paper feeding device,, in the Power train of donor rollers, be provided with mono-directional overrun clutch in order to satisfy above-mentioned condition.Disclose the special public clear 58-6633. spy of having of this prior art and open clear 60-25776, special public clear 63-67477 or the like.

But because of complex structure, there is the problem that volume is big, cost is high in the structure of this set mono-directional overrun clutch.

The present invention puts forward in view of such technical task.The object of the present invention is to provide a kind of like this automatic paper feeding device: even when using the inclined-plane disengagement gear, also there is no need in the donor rollers drive system, to adopt labyrinths such as mono-directional overrun clutch, with simple and small-sized, inexpensive structure, just can be really with more than separation of loaded paper.Simultaneously, even when donor rollers stops, also can pull out log sheet smoothly.

According to the present invention, such automatic paper feeding device can be provided: use the cross section for the semicircle roller that waits edge grain and radius unequal face as donor rollers, with this donor rollers adjacency, be provided with to have and wait the little some minor radius of edge grain and can turn round freely free revolving roll than above-mentioned.Therefore, in the donor rollers drive system, there is no need to adopt labyrinths such as mono-directional overrun clutch,, just can separate cargo-carring paper in certain many ground with simple, small-sized, low-cost structure.Simultaneously, even when donor rollers stops, also can draw log sheet smoothly.

Can provide such automatic paper feeding device according to the present invention: use the cross section for the semicircle roller that waits edge grain and radius unequal face as donor rollers.Near above-mentioned donor rollers, configuration is hanged down than above-mentioned edge grain such as grade and can be loaded the guiding parts that the log sheet on the plate contacts with paper.Therefore, in the donor rollers drive system, there is no need to adopt labyrinths such as mono-directional overrun clutch,, just can separate cargo-carring paper in certain many ground with simple, small-sized, low-cost structure.Simultaneously, even when donor rollers stops, also can draw log sheet smoothly.

Accompanying drawing has been represented embodiments of the invention.

Fig. 1 is the partial cutaway front elevation according to the automatic paper feeding device of the embodiment of the invention 1;

Fig. 2 is the cutaway view along Fig. 1 center line II-II;

Fig. 3 is the cutaway view that expression is installed to the automatic paper feeding device of Fig. 1 the state in the recording device;

Fig. 4 is the planar view of Fig. 3;

Fig. 5 is the longitudinal diagram of donor rollers and free revolving roll detailed structure in the presentation graphs 1;

Fig. 6 is the section-drawing along Fig. 5 center line VI-VI;

Fig. 7 is the cutaway view along Fig. 5 center line VII-VII;

Fig. 8 is that expression is with the strabismus mode figure under the recording device traverse running condition among Fig. 3;

Fig. 9 is the detailed longitudinal diagram of the single-revolution spring clutch in the presentation graphs 1;

Figure 10 is the front elevation of control loop and control stalk in the presentation graphs 9;

Figure 11 is the lateral plan that arrow XI direction is seen from Figure 10;

Figure 12 is the lateral plan of the control loop that arrow XII direction is seen from Figure 10;

Figure 13 is the lateral plan of the control loop that arrow X III direction is seen from Figure 10;

Figure 14 is the back view of the automatic paper feeding device fitting surface of recording device in the presentation graphs 3;

Figure 15 is the oblique drawing of seeing from the fitting surface of recording device that the automatic paper feeding device of Fig. 1 is packed into;

Figure 16 is the main portion section-drawing of lock-out state of the joint portion of the recording device of presentation graphs 3 and automatic paper feeding device;

Figure 17 is the main portion section-drawing that lock-out state is removed among expression Figure 16;

Figure 18 is the planar view that the paper of the automatic paper feeding device of presentation graphs 1 loads plate and paper guide;

Figure 19 is the cutaway view along Figure 18 center line X IX-X IX;

Figure 20 is the partial cutaway front elevation according to the automatic paper feeding device of the embodiment of the invention 2;

Figure 21 is the cutaway view along Figure 20 center line X XI-X XI;

Figure 22 is the planar view of Figure 20;

Figure 23 is the level-of-detail section-drawing of donor rollers and free revolving roll among expression Figure 20;

Figure 24 is the section-drawing along XX IV among Figure 23-XX IV line;

Figure 25 is the cutaway view along XX V among Figure 23-XX V line;

Figure 26 is the oblique drawing of seeing from fitting surface when the automatic paper feeding device with Figure 20 is installed to recording device;

Figure 27 is the partial cutaway front elevation according to the automatic paper feeding device of embodiments of the invention 3;

Figure 28 is the cutaway view along XX VIII among Figure 27-XX VIII line;

Figure 29 is the planar view of Figure 27;

Figure 30 is the local horizontal section-drawing of donor rollers and free revolving roll among expression Figure 27;

Figure 31 is the cutaway view along XXX I among Figure 30-XXX I line;

Figure 32 is the cutaway view along XXX II among Figure 30-XXX II line;

Figure 33 is the oblique drawing of seeing from fitting surface when the automatic paper feeding device with Figure 27 is installed in the recording device;

Figure 34 is the partial cutaway front elevation according to the automatic paper feeding device of embodiments of the invention 4;

Figure 35 is the cutaway view along XXX V among Figure 34-XXX V line;

Figure 36 is the planar view of Figure 34;

Figure 37 is the partial cutaway front elevation according to the automatic paper feeding device of embodiments of the invention 5;

Figure 38 is the cutaway view along XXX VIII among Figure 37-XXX VIII line;

Figure 39 is the planar view along Figure 37;

Figure 40 cuts open front elevation according to the office of the automatic paper feeding device of embodiments of the invention 6;

Figure 41 is that expression uses the paper feed of other paper supply way to replace automatic paper feeding device of the present invention, is installed to the cutaway view of the example of image recording;

Figure 42 is the STRUCTURE DECOMPOSITION instruction diagram that is illustrated in a routine header record that uses in the recording device of ink-jetting style;

Figure 43 (a)～(g) is the venting by producing bubble, the instruction diagram of the ink mist recording principle that writes down.

Below, specify the present invention with reference to accompanying drawing.With Fig. 1～Figure 19 embodiment 1 is described.

Fig. 1 is that I from Fig. 2-I line is seen the front elevation according to an embodiment of automatic paper feeding device of the present invention; Fig. 2 is the cutaway view along II among Fig. 1-II line; Fig. 3 is the cutaway view of the automatic paper feeding device with Fig. 1 when being installed to recording device; Fig. 4 is the planar view of Fig. 3.

Among Fig. 1～Fig. 4, the framework 51 of automatic paper feeding device 50 is whole formation, and its left part is the 51A of gear case portion, and centre portion is that paper loads plate support 51B, and the right side is divided into cap 51C.

The top that supply-roll 52 loads plate support 51B by paper, its two ends respectively the 51A of gear case portion and cap 51C with freely rotating axle propping up.Two

donor rollers

53A and 53B are installed on the supply-roll 52, make them form the one revolution.In legend, the donor rollers 53A of a side is mounted to and can moves along the paper Width along axle 52., and the donor rollers 53B of opposite side is fixed on the axle 52.

Paper in said frame 51 loads on the plate support 51B, and the paper that can adorn many log sheets 54 loads plate 55, stablizes keeping and can move at above-below direction.This paper loads plate 55 and sees Fig. 2 by the crimping of itself and 51 installations of framework with spring 56(), composed gesture to above-mentioned

donor rollers

53A, 53B direction.Therefore, be loaded in above-mentioned paper and load log sheet 54 on the plate 55, by above-mentioned spring 56, constantly composed gesture to above-mentioned

donor rollers

53A, 53B direction.

When using the different paper of size, even but perhaps same size will indulge is sent or during horizontal sending, can regulate the position of above-mentioned donor rollers 53A with paper guide piece 65 described later as above-mentioned log sheet 54.

In direction of the supply the place ahead of above-mentioned

donor rollers

53A, 53B, just load the front end adjoining position of plate 55 with above-mentioned paper, be provided with by climbing that the inclined-plane constituted, can make climb disengagement gear 57 on it of the superiors' log sheet 54.In the present embodiment, above-mentioned disengagement gear 57 forms the part of framework 51.

As above-mentioned

donor rollers

53A, 53B, use the semicircle roller be semicircle shape (perhaps D shape), the cross section of this shape such as has at edge grain and radius unequal face.Above-mentioned edge grain such as grade is the side face that contacts, makes this form skip with log sheet 54; Above-mentioned radius unequal face is to set in the revolution range in the front and back of paper supply position of readiness (reference position or primary position), leaves the side face of log sheet 54.

The above-mentioned automatic paper feeding device 50 of present embodiment be a kind of beyond the dress mode be installed in the recording device 10, be used to that the power that transports roller drive source etc. from this recording device 10 drives.

Fig. 5 is the partial longitudinal section of the above-mentioned donor rollers 53A on the above-mentioned supply-roll 52; Fig. 6 is the section-drawing along VI among Fig. 5-VI line; Fig. 7 is the cutaway view along VII among Fig. 5-VII line.

In Fig. 5～Fig. 7, donor rollers 53A is by making with rigid plastic etc., is entrenched in the hub portion 58 on the above-mentioned supply-roll 52 and the rubber layer 59 that is cemented in lining cement etc. on the outer peripheral face of this hub portion is constituted.

Above-mentioned rubber layer 59 parts as previously mentioned, have edge grain such as grade that produces centripetal force and the radius unequal face that leaves log sheet 54, and its cross sectional shape is with flat-cut and goes formed semicircle of a part of circular arc or D shape as shown in the figure.

The axial groove 61 that forms on the axial projection 60 that above-mentioned hub portion 58 forms by diametric plane within it and the supply-roll 52 cooperates, be mounted to can with supply-roll 52 whole revolutions, the while can slide in axial setting range.Above-mentioned hub portion 58 integrally formed have diameter than donor rollers portion little and with supply-roll 52 cylindrical portion 62 concentric, that extend vertically and be positioned at these cylindrical portion 62 ends prevent come off with flange 63.

On the outer peripheral face of above-mentioned cylindrical portion 62, chimeric with freely rotating with one heart, the free revolving roll 64 of circle just.The external diameter of this free revolving roll 64 is more smaller than the paper supply face external diameter (waiting edge grain) of above-mentioned donor rollers 53A, than this donor rollers to clip part (radius unequal face) big.Above-mentioned free revolving roll 64 be with the smaller material of friction coefficient for example rigid plastic etc. make.

In addition, on the above-mentioned cylindrical portion 62 of the hub portion 58 of above-mentioned donor rollers 53A, the end 113(of the paper guide piece 65 that the side of log sheet 54 is led sees Figure 18,19), by working in coordination between the end face of above-mentioned flange part 63 and above-mentioned free revolving roll 64, can be adjusted in the position of paper cross direction simultaneously.This paper guide piece 65 as described later, with reference to Figure 18,19, can be mounted to respect to above-mentioned paper and load plate 55, moves in paper cross direction setting range (slip).In addition, above-mentioned paper guide piece 65 loads plate 55 with above-mentioned paper, can move near the direction (illustrated embodiment is an above-below direction) of leaving away relative to above-mentioned donor rollers 53.Therefore, the end 113 that cooperates with above-mentioned flange part 63 is irrelevant with the upper-lower position (loading height of log sheet 54) that paper loads plate 55, roughly forms the upright position so that no-float.

The donor rollers 53B on right side and free revolving roll 64 are installed in the certain position of supply-roll 52 among Fig. 1, in fact become symmetrical structure with the donor rollers 53A of above explanation.But, because donor rollers 53B is fixed on the supply-roll 52, therefore in the illustrated embodiment, omitted above-mentioned flange part 63 and above-mentioned paper guide piece 65, use the same function of interior sidewall surface performance of the cap 51C of framework 51.

In addition, make the right side donor rollers 53B can adjusting position,, free revolving roll 64 and paper guide piece 65 or cooresponding therewith parts also are set, on the right side so can accomplish left-right symmetric with this donor rollers 53B.

And the top of paper 54 is usually located in the scope on inclined-plane of disengagement gear 57.

Automatic paper feeding device 50 loading and unloading of the invention described above embodiment are installed in the recording device 10 freely, and utilize the drive source (for example, driving the motor of paper transferrer etc.) of this recording device 10, transport the roller driven in synchronism with paper.In addition, when recording device 10 is installed in automatic paper feeding device 50, as shown in Figure 3, use with perpendicular configuration state; When automatic paper feeding device 50 independent uses are not installed, as shown in Figure 8, even horizontal state also can use.

Now use Fig. 3 and Fig. 8, the general arrangement of above-mentioned recording device 10 is described.

In Fig. 3 and Fig. 8, top (erecting when putting posture is the front) of recording device 10 is formed with paper and inserts mouth 11 and paper delivery 12.Insert the log sheets of mouth 11 insertions and the side face closed contact of the pleten roller 14 that double as paper transports roller from paper, transport the path along the log sheet that slightly is the U font and transport along the arrow A direction.And, carry out record during the recording portion of log sheet by header record 15 opposites, the record back is sent to top when putting posture (perpendicular be the front) from paper delivery 12.

Here, paper supply support 16 can open and close the ground pivot and prop up on recording device 10, and (during record) opened during use, has the function as the paper supply support; When not using when keeping (collection or the like), shown in solid line among Fig. 3, make it in the closed position, cover and be provided with that paper inserts mouthfuls 11, the recording device 10 of paper delivery 12 and other shape class, telltale or the like above, as lid 16, have defencive function.

In Fig. 3, header record 15 carries along on the axis of guide 21, the 21 reciprocating balladeur trains 22 parallel with pleten roller 14.In addition, graphic header record 15 is that ink gun is made illustration, constitutes with the storage ink container is whole.At the carriage direction upstream side of header record 15, be provided for log sheet is pressed onto platen parts 23 on the pleten roller 14.These platen parts 23 rely on spring (not shown) to be pressed on the periphery of paper web roller 14.In addition, the pressure of above-mentioned platen parts 23 can be removed by the operation control stalk.In paper delivery 12 positions, auxiliary afterburning roller 26 and the exit roller 27 of sending log sheet is set.

Figure 14 is bottom surface (if erect when putting, being the back side that the automatic paper feeding device 50 is installed) figure of expression recording device 10.

At the back side of recording device 10, form the 2nd paper and insert mouth 28.By header record 15 with transport recording portion between the roller (pleten roller) 14, transport the path, roughly along continuous straight runs extension from this insertion mouthfuls 28 up to the 2nd slightly linearly log sheet of above-mentioned paper delivery 12.The 2nd log sheet transports the path and uses when recording device 10 is perpendicular puts when making, owing to there is not bending, therefore following advantage is arranged: even as special paper such as ground paper such as postcard and envelope or plastic papers, thick tough log sheet also can easily be realized paper feeding.

With this perpendicular configuration state, as shown in Figure 3 and Figure 4, loading and unloading are installed with above-mentioned automatic paper feeding device 50 freely, and the paper of (during perpendicular putting) inserts mouth 28 from the back side, and log sheet 54 is supplied with on many ground automatically.Therefore, the installation site of automatic paper feeding device 50 will make from inlet (paper insert mouthful) 28 log sheet 54 is sent into along the path of transporting of this linearity, and loading and unloading are installed in the back side (opening surface of inlet 28) of recording device 10 freely.When being installed to automatic paper feeding device 50 in the recording device 10, in the illustrated embodiment, above-mentioned paper supply support 16 places the release position shown in Fig. 3 two point locking wire, and this occasion is used as row's paper support.

From the log sheet 54 of automatic paper feeding device 50 by above-mentioned paper patchhole 28 supplies, at first, send into above-mentioned transporting between roller 14 and the above-mentioned platen parts 23,, be fed into paper supply position (being generally the logger position) always by with rotating roller 14 and the donor rollers 53 of transporting synchronously of same peripheral speed roughly.

Semicircle donor rollers 53 is got back to primary position, and after the paper centripetal force was removed, operation of recording began, Yi Bian rely on the above-mentioned roller 14 that transports to transport, Yi Bian log sheet 54 is carried out record.

Transporting log sheet 54 that roller 14 sends is admitted between near the feeding-in roll 27 and afterburning roller 26 that is arranged on the paper delivery 12.After, rely on and synchronously drivenly transport roller 14 and feeding-in roll 27 transports.This feeding-in roll 27 is also shown same peripheral speed greatly and is driven synchronously with the above-mentioned roller 14 that transports, and in the operation of recording thereafter, log sheet 54 is by transporting roller 14 and feeding-in roll 27 is transported, and the log sheet 54 of the record that is through with is sent on the paper supply support 16 of double as row paper support.

In addition, maybe this transports roller and exit roller 27 by transporting roller 14, draw or when transporting log sheet 54, even in automatic paper feeding device 50, there is log sheet 54, the log sheet 54 of this moment only with freely above-mentioned free revolving roll 64 crimping of revolution, owing to break away from from donor rollers 53, so log sheet 54 can not drawn the brake action disappearance when log sheet is transported with almost being subjected to resistance.In addition, also can prevent overlapping sending below the 2nd.

Automatic paper feeding device 50 is installed under the state of recording device 10, transport gear 71(on the axle of roller 14 from the output gear of recording device 10 owing to be fixed on paper) and be located at the gear case 51A of automatic paper feeding device 50) on input gear 72 intermesh (with reference to Fig. 1 and Fig. 3), therefore, input gear 72 transports synchronously and quilt revolution driving with the paper of recording device 10.The revolution of this input gear is passed to gear 74(clutch gear on the supply-roll 52 by gear 73).

Here, be provided with one between gear 74 and the supply-roll 52 and change spring clutch 75.This commentaries on classics spring clutch 75, action as described below: promptly, a small amount of contrary revolution (revolution opposite with carriage direction) interlock of transporting roller (pleten roller) 14 with the paper that produces according to the paper supply signal, one changes spring clutch 75 reverses in reference position that donor rollers 53 and log sheet 54 break away from or during primary position.Because the action when this reverses, the control setup of control stalk etc. is left prevent to write down the rotating position of direction, 75 of spring clutchs switch to from disengagement and close.In addition, even be in the state that donor rollers 53 and log sheet 54 break away from, the cross section be orbicular above-mentioned free revolving roll 64 also with log sheet 54 crimping.

Under the state that power-transfer clutch closes, with the set amount record direction revolution interlock of transporting roller (pleten roller) 14, make donor rollers (D forming roll or semicircle roller) 53 do a roughly commentaries on classics rotation, log sheet 54 only separates one, and paper supply is up to the position of the paper introducing portion of crossing pleten roller 14.When roller 53 is got back to primary position (producing the position in gap between donor rollers 53 and log sheet 54), above-mentioned control setup is positioned at again prevents to write down the rotating position of direction, make power-transfer clutch 75 be disengaged position, cut off the interlock of pleten roller 14 and donor rollers 53, this donor rollers 53 is stopped.So, at donor rollers 53(supply-roll 52) a refunding between, log sheet 54 only has separated sending.

Fig. 9 is that the longitudinal diagram of spring clutch 75 structures, Figure 10～13rd, the instruction diagram of control stalk in the presentation graphs 9 (control setup) and control loop are changeed in expression above-mentioned.

Being installed in one on the above-mentioned supply-roll 52 changes spring clutch 75, has the hub portion (reel portion) 76, screw-shaped clutch spring 77, clutch drum 78 and the control loop 79 that become one with above-mentioned clutch gear (input gear) 74.Shown in Figure 10～13, on above-mentioned control loop 79, the control setup (control stalk) 80 of control clutch action relies on controlling spring 81 to be pressed towards radius centripetal direction and axial.Above-mentioned clutch drum 78 is fixed on the supply-roll 52, is integral revolution.

On the one hand, the clutch gear 74 with hub portion 76 is entrenched on the supply-roll 52 with freely rotating.On the side face of above-mentioned hub portion 76 and above-mentioned clutch drum 78 the clutch spring cradle portion is set, spiral fashion clutch spring 77 is across adorning at two Fang Shanghuan.The hole 82 that forms on one end of clutch spring 77 and the clutch drum 78 is to close, and often is being connected with this clutch drum 78.The other end of clutch spring 77 is hooked on the otch 83 that forms on the control loop 79 of the periphery that is entrenched in above-mentioned clutch spring 77 pivotally.

Control loop 79 is the shape shown in Figure 10～13, and the left side revolution in the planar view of Figure 10 is corresponding with the paper supply direction of donor rollers 53.

Control stalk 80 reverses on the interior axle 84 that is provided with of the 51A of gear case portion that is entrenched in framework 51 comfortablely, as shown in Figure 10 and Figure 11, by above-mentioned controlling spring 81, control stalk 80 is with respect to control loop 79, to axially (right among Figure 11) and radius are composed gesture to center position.

When paper supply readiness for action (the benchmark non-contacting position of donor rollers 53), control stalk 80 is hooked on the otch 85 of control loop 79 and is stopping.At this moment, log sheet 54 by above-mentioned free revolving

roll

64,64 crimping.

One has the paper supply instruction from control part, at first transports roller 14 by the contrary revolution of set amount.Synchronous therewith, by driving device (clutch gear) 74 and clutch spring 77, control loop 79 only turns round the space-number of setting to contrary gyratory directions (being the right-hand rotation direction).At this moment revolution makes the above-mentioned roller 14 contrary revolutions of transporting, and above-mentioned clutch gear 74 is turned round to the clutch spring 77 lax directions that are wrapped on its hub portion (reel) 76; ; in fact supply-roll 52 is because little with the contact load of log sheet 54; therefore the rolling-in moment of torsion the during initial stage of clutch spring 77 works; the revolution of clutch gear (driving device) 74 is by transmission, and the control loop 79 that is hooked on the spring terminal of clutch spring 77 only rotates the space-number of setting at contrary gyratory directions.

By the reverse revolution of this control loop 79, control stalk 80 is along the inclined plane part 86 of the otch 85 of control loop 79, side shifting outside the control loop radial direction, and one is cross on the face 88, by controlling spring 81, is urged on face 87, becomes along

face

87,88 sliding modes.

Subsequently, control loop 79 is roughly returned turns around to positive dirction.Promptly, synchronous with the revolution of transporting roller 14, clutch gear 74 is turned round to positive dirction, the clutch spring 77 that is wrapped on its hub portion 76 forms to tight direction revolution, so this hub portion 76, this clutch spring 77 and clutch drum 78 are integral revolution, moment of torsion transmits to supply-roll 52 and donor rollers 53, drives it and turns round towards positive dirction.Meanwhile, be that the control loop 79 that closes is also turned round to identical direction with above-mentioned clutch spring 77 1 ends.

By the revolution of this moment and the tax force of above-mentioned controlling spring 81, control stalk 80 moves on face 88, simultaneously, compresses to face 87, slides along face 87 and face 88.Because this positive dirction revolution, donor rollers 53 is driven, log sheet 54 beginning feedings.

After just turning round with set angle, then control stalk 80 93 descends to face 89 from the inclined-plane earlier, continues to be directed to join with face 89, if further just turn round by face 94 then, then the top of control stalk 80 is hooked on the otch 85 of control loop 79, and the revolution of this control loop 79 stops.That is, just turn round by set angle, then control stalk 80 falls to face 89 by inclined-plane 93 earlier, presses set angle along

face

87,89 and slides.

If further with the positive dirction revolution, after then control stalk 80 lifts along inclined-plane 94, slide along face 89,90.If further just turn round, return and go around, then from

face

89,90, be embedded in and bump against the above-mentioned otch 85 that falls into position formation, tying is in this otch 85, and the revolution of control loop 79 stops.Because this control loop 79 stops revolution, above-mentioned one changes spring clutch 75 becomes disengaged condition once more.

Blanket above action, by the control loop reverse at 79 initial stages (pulse count of setting), for the paper supply binary pair that donor rollers 53 is rotated a circle hangs up, control loop 79 is turned round between one-period along positive dirction, donor rollers 53 is driven revolution, and donor rollers 53 and control loop 79 revolutions were got back to the primary position place in one week, and above-mentioned control stalk 80 embeds otch 85 once more, power-transfer clutch becomes disengaged condition, and donor rollers 53 stops in the reference position.So roller 14 is synchronous with transporting, donor rollers 53 rotates a circle, and the paper supply action is finished.

The pulse count of above-mentioned reverse binary pair, make when transporting motor rotation that roller uses by the driving of recording device 10 when making donor rollers 53 contrary revolutions, control stalk 80 moves along the inclined plane part 86 of control loop 79, break away from fully from otch 85, and on

face

87,88, move, and, with donor rollers 53 and other parts for example log sheet 54 grades do not produce and interfere and bring bad influence such as paper displacement for well.

By an above commentaries on classics spring clutch 75, just can control donor rollers 53 certain returning and circle.Therefore, in the paper supply readiness for action, log sheet 54 becomes and is directed into than the primary position of setting also to the outstanding position of the direction of the supply, promptly becomes the state that is brought into the position that surmounts disengagement gear 57, can prevent to reduce the amount of feeding essential in recording device 10.

Promptly, according to the setting range that waits edge grain of log sheet 54 crimping, even paper supply is finished in the process that donor rollers 53 does not also have back to circle, get back to primary position at control loop 79 thereafter, and then after the revolution of donor rollers 53 stopped, drive source was in order to draw log sheet 54 still in revolution.Therefore, can not take place because of the revolution of control loop 79 inadequately with control stalk 80 be to close untrue problem.So control loop 79 often is controlled in and can turns back to primary position (notch of semicircle or D tee section and log sheet 54 non-contiguously facing to, only be crimped on position on the log sheet 54 by above-mentioned free revolving roll 64).In addition because like this, even misplace, when paper supply such as slip is slipped up, also can be positively paper supply once more.

Below, explain with regard to the loading and unloading combined structure freely of recording device 10 and automatic paper feeding device 50.

Figure 14 is the back view of the automatic paper feeding device attachment face of expression recording device 10; Figure 15 is the oblique drawing of the fitting surface (front) of expression automatic paper feeding device 50; Figure 16 is the horizontal sectional drawing of the bonding state of expression recording device 10 and automatic paper feeding device 50; State after Figure 17 represents to unlock from the state of Figure 16.

At first, at the back side of recording device 10, shown in Figure 14,16 and 17, propped up by axle with pleten roller 14 synchronously rotating above-mentioned output gears 71.On the one hand, fitting surface one side at automatic paper feeding device 50, shown in Figure 15～17, can be to donor rollers 53(supply-roll 52) the above-mentioned input gear 72 that transmits turning force propped up by axle, during connection, by making these

gear

71,72 engagements, the propulsive effort of donor rollers 53 transmits to the automatic paper feeding device side.

In the recording device 10, be provided with the frame parts 35 that supporting pleten roller 14 and paper transport the bearing portion of motor 34 etc., housing parts is installed on this frame parts 35.Bar 101 and the hook part that top hook 102 is arranged 103 that can swing are installed on the automatic paper feeding device 50, and can move by set amount at fore-and-aft direction, this hook part 103 is composed gesture to the inside by extension spring 104.

On the one hand, with the above-mentioned hook 102 corresponding positions of the said frame parts 35 of recording device 10 on, be formed with opening 201, this hook 102 enters by the opening of housing, hook 102 engages with the circumference of this opening 201.As Figure 16 and shown in Figure 17, form the bead shape on the circumference of this opening 201, so that it can carry out smoothly with engaging of above-mentioned hook 102.

Under the state of hook 102 engaging that makes Figure 16, make extension spring 104 elongations (for example 1～2mm) because this spring force, automatic paper feeding device 50 be crimped in the recording device 10 in conjunction with.Catch bar 101 that it is reversed by hook part 103, as shown in figure 17, locking is disengaged, and automatic paper feeding device 50 is broken away from from recording device 10.The crimp force total of this bonding state is born by 3 place's contact surfaces.

Shown in Figure 14～16, be formed with as the 1st contact surface 105 and the 2. 3rd contact surface 106,107 that contact reference plane in automatic paper feeding device 50 1 sides.As shown in the figure, above-mentioned contact reference plane 105 is located near the above-mentioned input gear 72.Contact the benchmark contact surface 202 of reference plane 105 opposite faces with this, be formed on the frame parts 35 of above-mentioned intensity height, good rigidly, its position is selected in the engaging piece near gear 71,72.In addition, investing the active line of the above-mentioned hook part 103 of connecting portion crimp force, as shown in the figure, is the position of considering contact surface 105,106,107, is selected in the position that can obtain stable bond.

In addition, the 2nd, the 3rd contact surface 106,107 also can directly contact with the back side of recording device 10.And, be formed with locating dowel pin 203.204 on the fitting surface of automatic paper feeding device 50, cooperate with knock hole 205,206 by making these pins 203.204 in the formation of the back side of recording device 10, carry out the location of automatic paper feeding device 50 with respect to recording device 10.In addition, as shown in figure 14, the hole 205 in the knock hole 205,206 is a slotted hole.

Figure 18 is the planar view that the above-mentioned paper of expression loads plate 55 and above-mentioned paper guide piece 65, and Figure 19 is the section-drawing along X IX among Figure 18-X IX line.

In Figure 18 and Figure 19, paper loads in the paper cross direction setting range of plate 55 and is formed with guide groove 111, and it is the portion of closing 112 that the bottom of paper guide piece 65 is formed with what can slide along above-mentioned guide groove 111.As shown in figure 19, above-mentioned system close portion 112 above, be formed with the top identical face that loads plate 55 with paper, can be loaded in on the one side loading log sheet 54.

The leading section 113 of paper guide piece 65 and flange part 63(Fig. 5 and Fig. 7 of above-mentioned donor rollers 53A) engage.Therefore, make this paper guide piece 65 according to paper when wide and mobile, above-mentioned donor rollers 53A and the free revolving roll 64 that is adjacent also simultaneously can carry out position adjustments.

Below, with Figure 20～Figure 26 embodiment 2 is described.And the place that main explanation and embodiment 1 are different.

Figure 20 is the front elevation of present embodiment; Figure 21 is the section-drawing along X XI among Figure 20-X XI line; Figure 22 is the planar view of Figure 20.

At the paper direction of feed rear side of supply-roll 52, be provided with the bolster 301 parallel with this supply-roll 52, is supporting at the gear case 51A and the cap 51C of framework 51 at the two ends of this bolster 301, and this bolster 301 is mounted to stationary state usually.On the above-mentioned bolster respectively with the corresponding position of above-mentioned

donor rollers

53A, 53B on, pivot is propping up free revolving roll 302A, the 302B with these donor rollers adjacency with freely rotating.

The free revolving roll 302A of one side is the same with cooresponding donor rollers 53A, can move at the paper cross direction along axle 301; The free revolving roll 302B of opposite side, axle 301 turns round freely relatively, but is installed with at the certain position of paper cross direction.

Figure 23 is above-mentioned donor rollers 53A on the above-mentioned supply-roll 52 and the horizontal cross-sectional view of the free revolving roll 302A on the above-mentioned bolster 301; Figure 24 is the section-drawing of XX IV among Figure 23-XX IV line; Figure 25 is from end view drawing that the XX V-XX V line is seen among Figure 23.

In Figure 23～Figure 25, paper feed roller 53A is with formation such as rigid plastic, by being entrenched in the hub portion 58 on the above-mentioned supply-roll 52 and constituting with the rubber layer 59 that lining cement etc. is fixed on this hub portion outer peripheral face.The donor rollers side face that comprises above-mentioned rubber layer 59 parts as previously mentioned, has the radius unequal face that waits edge grain and break away from log sheet 54 that produces centripetal force.Its cross sectional shape as shown in the figure, is the semicircle or the D shape of going a circular arc part with flat-cut.

Above-mentioned hub portion 58 is engaged to the axial groove 61 that forms by making the axial projection 60 that forms on the diametric plane within it on supply-roll 52, be integral revolution with supply-roll 52, simultaneously, axially can slide in the setting range.Above-mentioned hub portion 58 is provided with the axially extended cylindrical portion 62 littler and concentric with supply-roll 52 than donor rollers portion diameter, the whole circumferential groove 63 that is movably engaging up and down with paper guide piece 65 that is formed with on this cylindrical portion 62.

On the one hand, with the bolster 301 of supply-roll 52 configured in parallel on freely rotating axle propping up free revolving roll 302A with above-mentioned donor rollers 53A adjacency.Also be formed with axially extended hub portion 303 on this free revolving roll 302A, the above-below direction breach 304 that is formed with above-mentioned paper guide piece 65 on this hub portion 303 is the circumferential groove 305 that prevents to throw off usefulness that is closing sliding freely.In addition, above-mentioned paper guide piece 65 is to lead for the side of loading the log sheet 54 on the plate 55 along paper, loads plate 55 for this paper, in paper cross direction adjustable position.

So above-mentioned donor rollers 53A and above-mentioned free revolving roll 302A move along the paper cross direction with certain position relation usually by above-mentioned paper guide piece 65.

Position and the external diameter of selected above-mentioned free revolving

roll

302A and 302B, should be able to form for cargo-carring log sheet 54, the paper supply face external diameter (waiting edge grain) of above-mentioned

donor rollers

53A and 53B leaves some (drawing back some), from the notch (radius unequal face) of this donor rollers more near the side face of (giving prominence to).Above-mentioned free revolving roll 302 is with the friction coefficient materials with smaller, for example manufacturing such as rigid plastic.

In addition, paper guide piece 65 should be same with the foregoing description 1, loads plate 55 for above-mentioned paper, is mounted to and can moves (slip) in paper cross direction setting range.The leading section 113 of paper guide piece 65 is seen Figure 23 with the circumferential groove 63(of above-mentioned donor rollers 53A) engage, in addition, roughly in vertical direction the otch 304 that on this paper guide piece 65, forms, then be fastened on 305 li of the circumferential grooves of above-mentioned free revolving roll 302A sliding freely, for this reason, make this paper guide piece 65 wide when mobile according to paper, above-mentioned donor rollers 53A and the free revolving roll 302A that is adjacent also move simultaneously, can adjust to the position of setting usually.

The donor rollers 53B on right side and free revolving roll 302B are installed in the certain position of supply-roll 52 among Figure 22, are essentially symmetrical structure with donor rollers 53A described above and free revolving roll 302A.But, donor rollers 53B is fixed on the supply-roll 52, though free revolving roll 302B can turn round freely on bolster 301, but be defined at axial location, therefore in the illustrated embodiment, their

circumferential groove

63 and 305 is omitted, and this part is cut down with

hub portion

58 and 303 corresponding parts.In addition, with above-mentioned paper guide piece 65 cooresponding functions, work by the interior sidewall surface of the cap 51C of framework 51.

And, make the donor rollers 53B on right side and free revolving roll 302B can adjusting position the time, paper guide piece 65 or cooresponding therewith parts also are set on the right side, can constitute symmetrical structure certainly.

In addition, identical with Fig. 3 of embodiment 1 in the automatic paper feeding device of present embodiment, can be installed in the recording device 10.

Below, with Figure 27～Figure 33, embodiment 3 is described.

Figure 27 is the front elevation of present embodiment; Figure 28 is the cutaway view along XX VIII among Figure 27-XX VIII line; Figure 29 is the planar view of Figure 27.

In Figure 27～Figure 29,51 one-tenth unitary constructions of the framework of automatic paper feeding device 50, its left part formative gear case 51A of portion, centre portion form paper and load plate support 51B, and formation cap 51C is divided in the right side.The top that supply-roll 52 loads plate support 51B by paper, its two ends are being propped up by axle with freely rotating at 51A of gear case portion and cap 51C.

On above-mentioned supply-roll 52 each is set three places at interval, the whole donor rollers 53 that forms.That is, above-mentioned supply-roll 52 and above-mentioned three donor rollers, 53 usefulness plastic injected dies etc. are one-body molded.In addition, the part beyond the two end axles branch of above-mentioned supply-roll 52 is star section as shown in the figure, to keep rigidity and lightweight.

Paper in said frame 51 loads on the plate support 51B, the paper that can load many log sheets 54 loads plate 55 above-below directions and can stablize movably and keeping, this paper loads crimping that plate 55 is installed with by itself and 51 of frameworks with spring (Fig. 2), to above-mentioned three donor rollers 53 by the tax gesture.Therefore, load cargo-carring log sheet 54 on the plate 55, rely on above-mentioned spring 56, constantly composed gesture towards above-mentioned donor rollers 53 at above-mentioned paper.

Load on the plate 55 at above-mentioned paper, contact with the side of cargo-carring log sheet 54, the above-mentioned paper guide piece 65 that limits its position is mounted to and can moves along the paper cross direction.This paper guide piece 65, in the illustrated embodiment, with inner vertical walls surface 66 synergies of the lid 51C of framework 51, two side positions of boot-loader paper 54.When using the different paper of size, even or same size and vertical send or during horizontal sending, this paper guide piece 65 can be regulated as log sheet.In addition, the position of above-mentioned three donor rollers 53 relation is to be provided with like this: when vertical paper supply, for example use the occasion of shaping size paper, carry out the feeding of paper 54 with two donor rollers 53 on right side among Figure 27; When horizontal paper supply, carry out paper supply with whole three rollers 53.

Load on the front end adjoining position of plate 55 in direction of feed the place ahead of above-mentioned donor rollers 53 or with above-mentioned paper, the disengagement gear of being made up of the inclined-plane that climbs 57 is set, the log sheet 54 of the superiors can climb on it.

The semicircle roller of edge grain and radius unequal face, semicircular in shape (or D shape) such as use that the cross section comprises is as above-mentioned donor rollers 53.The above-mentioned edge grain that waits is with log sheet 54 crimping, makes the side face of this form skip; Above-mentioned radius unequal face is in the revolution range that the front and back of paper supply position of readiness (reference position or primary position) set, from the side face of log sheet disengaging.

Present embodiment is the paper direction of feed front side of donor rollers 53, with the loading plate 55 of above-mentioned disengagement gear 57 adjacency on the position, disposing free revolving roll 302.Promptly in the paper direction of feed front side of above-mentioned supply-roll 52, the bolster 301 parallel with this supply-roll 52 propped up by axle with freely rotating.On each donor rollers 53 pairing position (three places) on this bolster 301, wholely form free revolving roll 302.

The position of each free revolving roll 302 and radius are so selected: promptly with respect to cargo-carring log sheet 54, should have than each donor rollers 53 above-mentioned wait edge grain leave some (drawing back some), than above-mentioned radius unequal face more near the side face of (giving prominence to).Therefore above-mentioned free revolving roll 302 is not when the edge grain such as grade of donor rollers 53 contacts with loaded paper 54, replace this donor rollers to contact with paper 54, making often has pressure to exist on the cargo-carring log sheet 54, simultaneously, for from the drawing of recording device side, there is resistance (braking) hardly.

The two ends of above-mentioned bolster 301 are being propped up by axle with freely rotating at the 51A of gear case portion and the cap 51C of framework 51.

In the present embodiment, above-mentioned bolster 301 and free revolving roll 302 are also with global formations such as plastic injected dies, and bolster 301 is the same with supply-roll 52 in addition, except both ends, all is star section, to keep its rigidity and to seek lightweight.

And above-mentioned free revolving roll 302 is configured in the front side of donor rollers 53, and at the leading section that loads plate 55.Therefore, be in usually very, can limit the levitating of cargo-carring log sheet 54, have the effect separatory of log sheet 54 in the time of further improving paper supply near the position of disengagement gear 57.

According to the occasion difference, above-mentioned free revolving roll 302 also can be configured in the rear side of above-mentioned donor rollers 53.In addition, the configuration of above-mentioned donor rollers 53 and free revolving roll 302 also can be arranged to more than 4 places, be provided with 3 places as shown in the figure, for example that postcard and cut paper is such typing paper is during from longitudinal and transverse either direction paper supply, at least also can contact with two rollers, the distortion and the diagonal of log sheet 54 can be prevented, stable paper supply action can be realized.

Figure 30 is the above-mentioned donor rollers 53 on the above-mentioned supply-roll 52 and the horizontal cross-sectional view of the free revolving roll 302 on the above-mentioned bolster 301; Figure 31 is along the cutaway view of XX XI-XX XI line among Figure 30; Figure 32 is the end view drawing that XX XII from Figure 30-XX XII line is seen.

In Figure 30～Figure 32,3 donor rollers 53 are with above-mentioned supply-roll 52, with global formations such as rigid plastic, in the outer peripheral face of each donor rollers 53 (in the illustrated example for waiting edge grain scope), are fixing rubber layer 59 with lining cement etc.The side face of above-mentioned donor rollers 53 (also comprising rubber layer) as previously mentioned, comprises the radius unequal face that waits edge grain and break away from log sheet 54 that produces centripetal force, and its cross sectional shape as shown in the figure, is with flat-cut fall a part circular semicircle or D shape.

On the one hand, with bolster 301 and three free revolving rolls 302 of above-mentioned supply-roll 52 configured in parallel, with (the preferably little material of friction coefficient) global formations such as rigid plastic.Prop up on framework 51 at the both ends of this bolster 301 axle with freely rotating.Therefore, three free revolving rolls 302 become one and freely turn round with bolster 301.

The position of above-mentioned each free revolving roll 302 and external diameter are selected like this: promptly with respect to cargo-carring log sheet 54, the paper supply face external diameter (waiting edge grain) that should have than above-mentioned donor rollers 53 will leave some (low), than the notch (radius unequal face) of this donor rollers side face (with the contact part of log sheet 54) near some (height).Therefore, when above-mentioned free revolving roll 302 does not contact with log sheet 54 at the edge grain such as grade of donor rollers 53, can contact with log sheet for donor rollers 53.

On the one hand, above-mentioned paper guide piece 65 is the sides of loading the log sheet 54 on the plate 55 for guiding paper, with reference to Figure 18 and Figure 19 as described later, can be mounted to and can load plate 55 with respect to above-mentioned paper, moves in paper cross direction setting range (slip).

In addition, therefore above-mentioned paper guide piece 65, is set at and these donor rollers 53 and free revolving roll 302 discontiguous positions owing to can move (being above-below direction in the illustrated example) relative to donor rollers 53 and free revolving roll 302.And in the present embodiment, above-mentioned paper guide piece 65 only is located at the left side, works the function that is equivalent to the right side paper guide piece by the interior sidewall surface of the cap 51C of framework 51.

But, also can dispose the paper guide piece of adjustable position as required in the left and right sides.

As above-mentioned embodiment, free revolving roll 302 is configured in the structure of the rear side of donor rollers 53, though fine aspect the platen effect that prevents to load log sheet 54 levitatings on the plate 55.; as present embodiment; free revolving roll 302 is configured in the structure of the front side of donor rollers 53; usually because very near the levitating of the cargo-carring log sheet 54 of position regulation of disengagement gear 57, so have the effect that the separation property of the log sheet 54 when paper supply is begun is further enhanced.

In addition, even in the automatic paper feeding device of present embodiment, also can as Fig. 3 of embodiment 1, be installed in the recording device 10.

Figure 34 is the front elevation of expression according to the embodiment 4 of automatic paper feeding device of the present invention; Figure 35 is the cutaway view along XXX V among Figure 34-XXX V line; Figure 36 is the planar view of Figure 34.

Present embodiment, replace freedom among the embodiment 2 by revolving roll 302, be provided with and can load the guiding parts 311 that the log sheet 54 on the plate 55 contact with above-mentioned paper.Donor rollers 53 is configured in three places of the setting of paper cross direction regularly.But in the present embodiment, each donor rollers 53 is relative.Can transmit rotary driving force, the supply-roll 52 that propping up of axle, at gyratory directions with axially all can not be fixed with relatively moving.

Above-mentioned guiding parts 311 is the position near the paper cross direction of each donor rollers 53, is the tabular of approximate vertical.In addition, each guiding parts 311 forms integral body with the framework 51 of automatic paper feeding device 50, in illustrated example, for connection gear case 51A of portion and cap 51C, formed support plate 312 between them, each guiding parts 311 rearward extends integrally formed from support plate 312 exactly.

And the axle of donor rollers 53 (supply-roll) 52 is in the position that connects each guiding parts 311, therefore, is formed with opening 313(Figure 35 on each guiding parts 311) so that supply-roll 52 passes.Above-mentioned each guiding parts 311 have than above-mentioned each donor rollers 53 wait the edge grain side face of feeding (contact) low some (leaving log sheet 54) with log sheet 54, than geomery radius unequal face (half-round) high (side-prominent), that can contact with log sheet 54 on the above-mentioned paper loading plate 55 to log sheet 54.

Furtherly, because the position of donor rollers 53 and guiding parts 311 fixes, so paper guide piece 65 and these parts deviate from, and this paper guide piece 65 is mounted to load on the plate 55 at paper and moves along the paper cross direction individually.

Present embodiment is different with aforementioned each embodiment on this point in the above, and other parts have same configuration in fact, and each counterpart represents that with prosign their detailed description is omitted.

According to present embodiment, compare with the various embodiments described above, can omit free revolving roll 302 and its bolster, in addition, cooresponding therewith guiding parts 311 can with framework 51 global formations, therefore, can obtain the miniaturization and and the cost-cutting of paper feed.

In addition, the configuration of above-mentioned donor rollers 53 and guiding parts 311 also can be made as more than 4 places, be configuration 3 places as shown in the figure, so for example make the such typing paper of postcard or cut paper no matter from vertically still during horizontal paper supply, two roll-ins are connect, the distortion and the diagonal of log sheet 54 can be prevented, stable paper supply action can be carried out.

Figure 37 is the front elevation of expression according to the embodiment 5 of automatic paper feeding device of the present invention; Figure 38 is the cutaway view along XXX VIII among Figure 37-XXX VIII line; Figure 39 is the planar view of Figure 37.

Present embodiment is roughly to be vertical tabular guiding parts 311 among the embodiment 4, changes to spoon shape or the below flat guiding parts for the setting width (being the overall with of paper supply width in the illustrated embodiment) of the cross sectional shape of outstanding arcuation.

In the illustrated embodiment, the field in the donor rollers 53 of this guiding parts 311 is formed with opening 314.

Donor rollers 53 is the same with embodiment 3, is fixedly installed on 3 places of the paper cross direction of supply-roll 52.That is, three donor rollers 53 are fixed respectively, with respect to can transmit rotary driving force, the supply-roll 52 that propping up of axle, at gyratory directions with axially all can not relatively move.

Each guiding parts 311 of present embodiment as shown in the figure, is the shape that can be crimped onto on the log sheet 54 that loads on the plate 55 in the paper supply direction position identical haply with each donor rollers 53.The below curve of each guiding parts 311 has and waits edge grain (with the side face of log sheet 54 crimping, feeding) geomery low slightly, higher than radius unequal face (half-round), that can contact with log sheet 54 on the above-mentioned paper loading plate 55 than above-mentioned each donor rollers 53.

In addition, each guiding parts 311 forms with framework 51 integral body of automatic paper feeding device 50, and in the illustrated embodiment, support plate 312 is connected between 51A of gear case portion and the cap 51C and forms, and each guiding parts rearward extends integrally formed from this support plate.

The described in the above aspect of present embodiment is different with each embodiment noted earlier, and other parts have identical structure in fact, and its counterpart is represented with prosign respectively, describes in detail and omits.

In addition, in the present embodiment, because whole stationkeeping of donor rollers 53 and guiding parts 311, so paper guide piece 65 and these parts deviate from, and this paper guide piece 65 is mounted to load on the plate 55 at paper along the paper cross direction individually and moves.

In addition, though the configuration of above-mentioned donor rollers 53 and guiding parts 311 also can be provided with more than 4, but if as shown in the figure, be provided with 3, then will be for example postcard and the such typing paper of cut paper no matter during from vertical or horizontal paper supply, 2 roll-ins are connect, can prevent the distortion and the diagonal of log sheet 54, carry out paper supply action stably.

If each embodiment according to above explanation, when the crimping of donor rollers 53 and cargo-carring log sheet 54 is removed in the reference position, in this reference position, push down the free revolving roll 302 or the guiding parts 311 of log sheet, be located on another bolster 301 different or separately and be provided with supply-roll 52.For this reason, load (crimp force etc.) to supply-roll 52 when this reference position can disappear, drive efficiency in the time of making by these supply-roll 52 revolutions of drivings such as spring clutch improves, and then reducing as the miniaturization of the motor of drive source, the electric power that economizes in consumption, the light weight miniaturization that causes owing to simplifying the structure and cost becomes possibility.

Furtherly, because paper guide piece 65 adopts and does not engage with donor rollers 53 grades, the structure of adjusting position individually, therefore, load (power) on the slide mechanism that is added in this paper guide piece 65 is disappeared, make when this paper guide piece 65 of operation, the disappearance of beating of log sheet lateral margin contact force, can be with certain power leader record paper, the diagonal of log sheet 54 and the automatic paper feeding device of distortion in the time of therefore obtaining preventing paper supply really.

Figure 40 represents embodiments of the invention 6.

Present embodiment can contact, break away from, can swing paper feed roller freely, be arranged on cargo-carring paper above, replace the semicircle roller of representing in the various embodiments described above.That is, paper feed roller 53C is supported on the 52A with freely rotating, and axle 52A is being provided with for a spot wobble with axle 53B freely by bar 52C.In addition, paper feed roller 53C is transmitted revolution by there not being graphic drive transmission device.

According to this structure, shown in dotted line if paper feed roller 53C sends log sheet 54 and rotates a circle, the position swing that above log sheet 54, breaks away from.At this moment, free roller 302A contacts with the top of log sheet 54, because uppermost log sheet is maintained and 57 corresponding positions, inclined-plane, so can separate supply log sheet 54 in certain many ground.

Below, just the situation that another kind of automatic paper feeding device 400 is connected in the recording device 10 is explained with Figure 41.

Automatic paper feeding device 400 is formed by the paper supply case portion 401 of taking in log sheet 402 with from the sheet feed section 403 that paper supply case portion 401 supplies with recording device 10 with log sheet 402.Paper supply case portion 401 comprise the pressing plate 404 that loads log sheet 402, with pressing plate 404 to sheet feed section 403 directions compose gesture spring 405, can push the disengaging pawl 406 in front end two bights of log sheet 402.Sheet feed section 403 is provided with semi-round paper feed roller 407 and feeding help roll 408.

Being connected of this automatic paper feeding device 400 and recording device 10, using with the same way of the foregoing description and carry out.In addition, the driving and the previous embodiment of paper feed roller 407 and feeding help roll 408 are same, are not transmitted by there being graphic gear cluster from the recording device side.

According to this structure, paper feed roller 407 revolutions, log sheet 402 is sent from paper supply case portion 401, and at this moment, by disengaging pawl 406, log sheet 402 is by many separation.Separated log sheet 402 is sent to recording device 10 by feeding help roll 408.Thereafter operation of recording is identical with previous embodiment.

In addition, the automatic paper feeding device 50 of previous embodiment can be fit to supply with thick log sheet and solid log sheet, and above-mentioned automatic paper feeding device 400 is fit to the supply of normally used log sheet.

Below, explain with regard to the ink-jet recording that is fit to do above-mentioned recording device 10.

Ink-jet recording comprise be used for recording black liquid as the drop that circles in the air make its liquid outlet, the liquid flow path that is communicated with this discharge orifice and part that is located at this liquid flow path of discharge spraying, in order to make the discharge energy generating means that the discharge energy is provided that black liquid circles in the air in the stream.And according to picture intelligence, drive above-mentioned discharge energy generating means, discharge black drop, recording picture.

As above-mentioned discharge the method that for example pressure of piezoelectric element can generating means such as electric apparatus conversion body of using can generating means be arranged, use with electromagnetic wave irradiations such as laser on black liquid, make its absorb heating, under heating functioin, make the method for the electromagnetic energy generating means that China ink discharges, perhaps use by electrothermal transformationer heated ink liquid, make the method for the thermal energy generating device that China ink discharges.Wherein, use is by the thermal energy generating device of electrothermal transformationer.The mode that China ink is discharged because assortment liquid outlet to high-density, therefore can obtain the record of high-resolution, and, can make the header record miniaturization, be very suitable therefore.

Specify the ink-jet recording of the serial type of one of ink-jet recording below.

Figure 42 is the decomposition texture instruction diagram that constitutes the header record 501 of recording device; Figure 43 (a)～(g) is the instruction diagram of bubble jet recording principle.Its representational structure and principle are number open by U.S.No.4723129 number, U.S.No.4740796.

In Figure 42,501a is a heating plate, electrothermal transformationer on silicon substrate (discharge heat) 501b and disposed by film forming to the electrode 501c of the aluminium of its supply capability etc.For this heating plate 501a, constitute by being bonded with for the top board 501e that separates the partition wall that record uses with liquid road (jet pipe) 501d of liquid.And the desired location at device is installed with print cartridge convertibly, so that provide ink to above-mentioned header record 501.

By the conduit ink supplied, be filled to common liquid chamber 501g in the header record 501 from above-mentioned print cartridge, lead in each jet pipe 501d from this common liquid chamber 501g from the supply port 501f that is located at top board 501e.On these jet pipes 501d, be formed with discharging opening for permitting discharging of the toner 501h, and above-mentioned discharge orifice 501h is relative with the log sheet of above-mentioned header record 501, forms to set spacing along the paper carriage direction.

In the present embodiment, the header record 501 of said structure carries on the balladeur train that can move back and forth, and moves synchronously with balladeur train, makes ink discharge, circle in the air from above-mentioned header record 501, carries out record.

Here, with reference to the principle of circling in the air of the ink in Figure 43 (a)～(g) explanation ink-jet recording.

Under normal conditions, shown in Figure 43 (a), be filled in the interior ink 502 of jet pipe 501d in the surface tension and the external pressure balance of discharging actinal surface.When ink 502 being circled in the air with this state, the electrothermal transformationer 501b energising in jet pipe 501d, the ink in this jet pipe 501d surmounts the vaporization of nuclear shape, rapid temperature takes place rise.So, shown in Figure 43 (b), be heated the ink that produces this heating part of micro-bubble (foamings) with the ink of electrothermal transformationer 501b adjacency and gasify, produce membranaceous vaporization, shown in Figure 43 (c), above-mentioned bubble 503 shoots up.

Shown in Figure 43 (d), when above-mentioned bubble 503 was grown into maximum, the black drop just discharge orifice in the jet pipe 501d was forced out.So the energising one toward electric heating conversion 501b finishes, shown in Figure 43 (e), the bubble 503 of growth is owing to the ink 502 in the jet pipe 501d cools off, shrinks, and by growth, the contraction of this bubble, black drop circles in the air from discharge orifice.And then shown in Figure 43 (f), ink contact electrothermal transformationer 501b is cooled sharp, and then bubble 503 disappears or is shrunk to the volume that almost can ignore degree.And above-mentioned bubble 503 1 shrinks, and is just shown in Figure 43 (g), because capillary phenomenon is supplied with ink from common liquid chamber 501g, standby during for energising later in jet pipe 501d.Therefore, balladeur train is moved back and forth simultaneously, moves synchronously, switch on toward above-mentioned electrothermal transformationer 501b according to picture intelligence with this, with picture record on log sheet.

In addition, in above-mentioned ink-jet recording, preferably return mechanism is located at balladeur train moving range end.Above-mentioned return mechanism is discharged face by the ink that covers above-mentioned header record 501 in non-when record etc., has near the drying of the ink the discharge orifice that prevents header record 501 and the function of the curing followed therewith.And, pump is connected on this return mechanism, bad in order to remove or prevent ink to discharge, preferably driving pump because its suction attracts ink from discharge orifice, is replied processing.

Claims

1, a kind of automatic paper feeding device, it comprises:

The paper loading device (55) of plurality of sheets of paper (54) is permitted in carrying;

Can contact, be provided with separatably with the top of paper on being loaded in above-mentioned paper loading device, contact the revolution feedway (64) that carries out paper supply with this paper;

The above-mentioned revolution feedway of principal direction that is loaded on the above-mentioned paper loading device is composed gesture device (56);

Be used for many ground separating the disengagement gear (57) of the paper of sending here by said revolution feedway from said paper loading device;

When said revolution feedway is not supplied with paper, be used for uppermost paper is maintained the spacer assembly of a position of separating with said revolution feedway;

It is characterized in that: said spacer assembly comprises that a free roller (302,302A), be located at freely rotating on the axle (301) with axle drive shaft (52) configured in parallel of said revolution feedway by this roller.

2, according to the automatic paper feeding device described in the claim 1, it is characterized in that: said disengagement gear comprises an inclined-plane (57) in the paper direction of the supply downstream that is formed on said revolution feedway, said revolution feedway makes paper contact with said inclined-plane, so that only a piece of paper is separated.

3, according to the automatic paper feeding device described in the claim 1, it is characterized in that: above-mentioned revolution feedway, the donor rollers that is had cut sides by the part of outer peripheral face constitutes.

4, according to the automatic paper feeding device described in the claim 3, it is characterized in that: above-mentioned spacer assembly is the free roller that is located at freely rotating on the axle drive shaft of above-mentioned donor rollers, the external diameter of this free roller is set at littler than the external diameter of above-mentioned donor rollers, and is bigger than the size of above-mentioned cut sides.

5, according to the automatic paper feeding device described in the claim 3, it is characterized in that: when the outer peripheral face of above-mentioned donor rollers is relative with paper on being loaded in above-mentioned paper loading device, said free roller does not contact with this paper, and when the cut sides of above-mentioned donor rollers is relative with above-mentioned paper, free roller contacts with the top of above-mentioned paper, and topmost paper maintains and corresponding position, above-mentioned inclined-plane.

6, according to the automatic paper feeding device described in the claim 5, it is characterized in that: above-mentioned free roller forms one with the axle of this free roller of supporting.

7, according to the automatic paper feeding device described in the claim 3, it is characterized in that: several above-mentioned donor rollers are installed on the axle drive shaft, and at least one donor rollers moves axially freely this axle drive shaft.

8, according to the automatic paper feeding device described in the claim 7, it is characterized in that: above-mentioned paper loading device is provided with the paper guide piece of the width position of the cargo-carring paper of regulation, can move freely this paper guide piece and the above-mentioned donor rollers interlock that moves freely according to the size of paper.

9, according to the automatic paper feeding device described in the claim 3, it is characterized in that: above-mentioned donor rollers and above-mentioned axle drive shaft are mounted to one.

10, according to the automatic paper feeding device described in the claim 9, it is characterized in that: above-mentioned donor rollers is located at 3 places with the interval of setting, and when supplying with small size paper, uses two rollers; When supplying with large scale paper, use 3 rollers.

11, according to the automatic paper feeding device described in the claim 1, it is characterized in that: above-mentioned spacer assembly is when above-mentioned revolution feedway when cargo-carring paper leaves from above-mentioned paper loading device, the guiding parts that contacts with the top of above-mentioned paper.

12, according to the automatic paper feeding device described in the claim 11, it is characterized in that: in the above-mentioned guiding parts with the paper contact portion, form the shape little with the friction of paper.