CN1116214C - Paper-feeding device - Google Patents

Paper-feeding device Download PDF

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Publication number
CN1116214C
CN1116214C CN98101489A CN98101489A CN1116214C CN 1116214 C CN1116214 C CN 1116214C CN 98101489 A CN98101489 A CN 98101489A CN 98101489 A CN98101489 A CN 98101489A CN 1116214 C CN1116214 C CN 1116214C
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CN
China
Prior art keywords
paper
roller
developing
paper feed
feed roller
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Expired - Fee Related
Application number
CN98101489A
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Chinese (zh)
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CN1200989A (en
Inventor
高桥洋
菊地忠美
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
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Publication of CN1200989A publication Critical patent/CN1200989A/en
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Publication of CN1116214C publication Critical patent/CN1116214C/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/02—Rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/0009—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material
    • B41J13/0018—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material in the sheet input section of automatic paper handling systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0607—Rollers or like rotary separators cooperating with means for automatically separating the pile from roller or rotary separator after a separation step
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

The invention provides a feeding device to suppress the slip caused between a paper feed roller and a recording paper sheet, and feed and convey the recording paper sheets one by one, cause the rotation of the paper feed roller arranged on the paper feeding direction side of the bottom recording paper sheet guide to switch alternately to high-speed rotation or low-speed rotation or, to switch alternately to the state of feeding roller to rotation state or pause state.

Description

Paper feed
The present invention relates to paper feed, particularly the foot log sheet in the some log sheets that are placed in the accommodation structure is supplied with successively the paper feed of recording device.
In recent years, in the prior art, the log sheet of card sizes such as phonecard, IC-card or business card is implemented colored record with color copy machine.The surface applied of this log sheet resin etc., be commonly referred to developing-out paper.Below, the existing paper feed of the developing-out paper of this card sizes being supplied with recording device is described.
In the existing paper feed, setting support developing-out paper and with it toward the bottom log sheet guide member of paper supply direction guiding, stacked several developing-out papers on this bottom log sheet guide member.Width both ends at above-mentioned bottom log sheet guide member, setting the sidepiece log sheet guide member of guiding the developing-out paper side surface part, from bottom log sheet guide member, along the paper supply direction predetermined space of being separated by, setting the leading section that supports developing-out paper and with its leading section log sheet guide member toward below guiding.The bottom by developing-out paper one side of this leading section log sheet guide member obliquely is cut off the burbling area that when being formed on paper supply developing-out paper is separated one by one.Below gap between bottom log sheet guide member and the leading section log sheet guide member, setting paper feed roller, this paper feed roller utilizes the friction force between it and developing-out paper bottom surface, supplies with successively from undermost log sheet.
Paper supply direction the place ahead at above-mentioned paper feed roller is setting the paper supply guide member.This paper supply guide member is supporting the bottom surface of the developing-out paper of being supplied with by above-mentioned paper feed roller, to the paper supply direction guiding.In paper supply the place ahead of this paper supply guide member, setting and transporting roller and the driven voller of external and driven rotation with it.Developing-out paper is seized on both sides by the arms to transport between roller and the driven voller at this and is transported.In the place ahead of transporting of transporting roller, setting the transport guide member of developing-out paper toward the recording device guiding, in this place ahead of transporting guide member, setting the feeding-in roll in the recording device.Delivered to recording portion in the recording device by the developing-out paper that transports guide member guiding by this feeding-in roll.
Position, front transporting roller and driven voller is setting the 1st feed in sensor, and the position, front at feeding-in roll is setting the 2nd feed in sensor.The 1st feed in sensor, the 2nd feed in sensor detect developing-out paper respectively and have passed through the desired location.
In an end of the S. A. of paper feed roller, connecting stepper motor with the power transmission tooth wheels as CD-ROM drive motor by the paper supply that constitutes by plurality of gears.On the other hand, in an end of the S. A. that transports roller, by transporting of constituting by plurality of gears with a power transmission tooth wheels connection stepper motor identical with above-mentioned paper feed roller.That is, above-mentioned paper feed roller and transport roller, respectively by paper supply with the power transmission tooth wheels or transport and use the power transmission tooth wheels, by mono-stepper motor driven in rotation.On this stepper motor, connecting the control mechanism that just changes and reverse control.
Above-mentioned paper supply is used on the power transmission tooth wheels with transporting with the power transmission tooth wheels, is setting just to change to reverse to use engaging and disengaging gear, and by switching the just commentaries on classics or the reverse of above-mentioned stepper motor, engaging and disengaging gear is switched.Just changeing the switching that reverses with engaging and disengaging gear by this, the bang path of the above-mentioned stepper motor propulsive effort of conversion makes paper feed roller and either party's rotation of transporting in the roller.
Below, with reference to diagram of circuit shown in Figure 5, paper feed roller that carries out with above-mentioned existing control mechanism and the driving method that transports roller are described.
Among Fig. 5, when paper feed begins paper supply, enter step ST21, stepper motor drove towards positive veer with maximum 2000 steps.Because the just commentaries on classics of this stepper motor, above-mentioned just the commentaries on classics reversed engaging and disengaging gear and just is switched to and changes one's position, and with the power transmission tooth wheels paper feed roller rotated by above-mentioned paper supply to the paper supply direction.
Then, at step ST22, judge the 1st feed in sensor whether because of developing-out paper pass through connect, when "Yes", enter step ST23, stepper motor was just changeing for 80 steps, supplied with developing-out paper, the leading section of this developing-out paper with transport roller and join.When "No", though promptly stepper motor rotated for 2000 steps, the 1st feed in sensor then is judged as and fault occurred when connecting, and enters step ST24, carries out fault handling.
Then, at step ST23, stepper motor drove for 80 steps, developing-out paper with transport roller and join, become the state that can transport between roller and the driven voller of seizing on both sides by the arms transporting.Therefore, enter step ST25, above-mentioned control mechanism to transport the roller driven in rotation and stepper motor reverse to be driven in order to make.Reverse by this stepper motor drives, and is above-mentionedly just changeing reverse and is switched to the reverse side with engaging and disengaging gear, use the power transmission tooth wheels by transporting, and makes to transport roller and begin to rotate towards the paper supply direction.This rotation driving of transporting roller was carried out with maximum 2000 steps.
Then, enter step ST26, judge whether the 2nd feed in sensor is connection, when "Yes", enters step ST27, make 80 steps of stepper motor rotation again, after being provided in feeding-in roll in the recording device and joining, the supply of this developing-out paper finishes.Then, feeding-in roll drives, and the operation of recording of recording device begins.
When "No", that is,, when the 2nd feed in sensor is not connection, then is judged as fault has taken place though stepper motor drove for 2000 steps, enter step ST28, carry out fault handling.
The driving method that above-mentioned existing control mechanism carries out adopts mono-stepper motor driving paper feed roller and transports the roller rotation.
Below, with reference to Fig. 6 the method that above-mentioned existing control mechanism is controlled paper feed roller and the speed of transporting roller is described.
As shown in Figure 6, existing control mechanism makes stepper motor with certain speed drive, and paper feed roller and transport roller along with this speed is with certain speed rotation.That is, when stepper motor with certain speed when positive veer drives, paper feed roller towards the direction rotation of supplying with developing-out paper, enters step ST25 with certain speed.When stepper motor with certain speed when reverse direction drives, transport roller with certain speed towards the direction rotation of transporting developing-out paper.
Below, the effect of above-mentioned existing paper feed is described.
Existing paper feed utilizes the deadweight of stacked developing-out paper, makes orlop developing-out paper and paper feed roller crimping, makes to produce friction force between this paper feed roller and developing-out paper.Like this, when paper feed roller rotated because of the driving of stepper motor, by the paper supply power that this friction force produces, the friction force of opposing orlop developing-out paper and second from the bottom log sheet was confessed the orlop developing-out paper.At this moment, bottom log sheet guide member and sidepiece log sheet guide member, respectively with the bottom surface sections of developing-out paper and side surface part toward the paper supply direction guiding, simultaneously, be formed on the burbling area on the leading section log sheet guide member, the orlop developing-out paper is separated with second from the bottom developing-out paper.Like this, by the developing-out paper that paper feed roller is supplied with, guided by the paper supply guide member, delivering to when transporting in front of the roller, the 1st feed in sensor detects passing through of developing-out paper.In the time of should being delivered to control mechanism by information, control mechanism makes stepper motor drive for 80 steps, makes developing-out paper and transports roller and join.
Then, control mechanism reverse to drive stepper motor, will just change reverse and switch to engaging and disengaging gear and transport with power transmission tooth wheels one side, makes and transports the roller rotation.Therefore, transport roller and driven voller is being seized developing-out paper on both sides by the arms, transport to the recording device direction along transporting roller.When developing-out paper was transported to the feeding-in roll front, the 2nd feed in sensor detected passing through of developing-out paper, and should pass to control mechanism by information.Control mechanism makes and transports 80 steps of roller driving according to this information, and developing-out paper and feeding-in roll are joined.Then, feeding-in roll is sent into developing-out paper in the recording device, carries out required record.
Above-mentioned existing paper feed is supplied with recording device one by one to stacked log sheet.
But, in the above-mentioned paper feed, in the supply of developing-out paper or transporting, when paper feed roller or transport roller and developing-out paper between friction force reduce, paper feed roller or transport roller and on developing-out paper, skid, and can not supply with this developing-out paper the time, the driving that can only stop paper feed roller or transport roller.That is, paper feed roller and transport roller is based on the friction force of its outer peripheral face and developing-out paper and brings into play paper supply, transport force, the supply developing-out paper.But, in the existing paper feed, because control mechanism makes stepper motor rotate with constant speed, so, paper feed roller or transport roller and also rotate with constant speed.In case paper feed roller or transport roller and developing-out paper between produce and skid, just can not make again and developing-out paper between friction force increase, thereby can not carry out developing-out paper supply, transport.
Especially, owing to drive paper feed roller and transport the roller rotation with the mono-stepper motor, transporting the initial moment that roller transports developing-out paper, the rearward end of developing-out paper is also seized on both sides by the arms between paper feed roller and second from the bottom developing-out paper, is subjected to than common big load.Therefore, skid transporting to be easy to generate between roller and the developing-out paper, can not transport normally.
The purpose of this invention is to provide a kind of paper feed, this paper feed can suppress paper feed roller or transport roller and log sheet between skid, increase friction force by the low speed rotation of paper feed roller, can effectively log sheet be confessed one by one and transport.
Another object of the present invention provides a kind of paper feed, this paper feed can suppress paper feed roller or transport roller and log sheet between skid, by paper feed roller stop to produce friction of rest power again, can transport log sheet, eliminate slipping state.
Another object of the present invention provides a kind of paper feed, this paper feed, with paper feed roller with transport roller and be connected with single CD-ROM drive motor with engaging and disengaging gear by just changeing to reverse, the inhibition paper feed roller or transport roller and log sheet between skid, can supply with log sheet effectively, and reduce the CD-ROM drive motor number.
Fig. 1 is the lateral plan of expression one embodiment of the invention paper feed.
Fig. 2 is paper feed roller in the present embodiment and the driving diagram of circuit that transports roller.
Fig. 3 is the control method of stepper motor rotative speed in the expression present embodiment.
Fig. 4 be expression in the present embodiment paper feed roller and transport roller and log sheet between friction force and the instruction diagram of rotative speed relation.
Fig. 5 is existing paper feed roller and transports the diagram of circuit of the driving of roller.
Fig. 6 is the control method of the existing stepper motor rotative speed of expression.
Below, the paper feed of one embodiment of the invention is described with reference to Fig. 1.
In the paper feed of present embodiment, on base station 1, setting bogie side frame 2, accommodation structure 4 and paper-feeding mechanism 5 at these bogie side frame 2 upper supports.Stacked several log sheets are developing-out paper 3 in the accommodation structure 4.Paper-feeding mechanism 5 is supplied with recording device 34 from accommodation structure 4 one by one with developing-out paper 3.Bottom log sheet guide member 6, sidepiece log sheet guide member 7 and leading section log sheet guide member 8 that accommodation structure 4 has supporting developing-out paper 3 and its past paper supply direction (right of Fig. 1) is guided.
Bottom log sheet guide member 6 is provided in the bottom surface sections of accommodation structure 4, from below supporting developing-out paper, with undermost developing-out paper 3 toward the paper supply direction guidings.Sidepiece log sheet guiding part 7 is in the position that separates predetermined space with respect to bottom log sheet guide member 6, and direction is stretched out on the right angle, the Width both sides face of supporting developing-out paper 3, with it to the paper supply direction guiding.
Leading section log sheet guide member 8 is provided in the paper supply direction with respect to bottom log sheet guide member 6 with meeting at right angles, and the paper supply direction leading section of supporting developing-out paper 3 is also guided it.Being cut sth. askew with respect to developing-out paper 3 in the lower end of leading section log sheet guide member 8, forms the burbling area 9 that stacked developing-out paper 3 is separated one by one.Developing-out paper 3 is advanced along this burbling area 9 towards below paper supply direction or is static.When paper supply, the marginal portion 9a by the lower surface of burbling area 9 and leading section log sheet guide member 8 can supply with paper effectively one by one discretely from the below.
Near the rearward end of bottom log sheet guide member 6, rearward end anvil roll 10 broad wayss are bearing on the bogie side frame 2 with extending.This rearward end anvil roll 10 when orlop developing-out paper 3 is supplied to, is supporting the rearward end of developing-out paper 3 more than the 2nd reciprocal, to alleviate the load that acts on from the top on the orlop developing-out paper 3.Like this, the friction force of orlop developing-out paper 3 and stacked the 2nd developing-out paper 3 of inverse thereon and reduce with the friction force of bottom log sheet guide member 6 can easily be supplied with developing-out paper 3, and prevent from once to confess two pieces of paper.
The shape of rearward end anvil roll 10 is not limit, as long as the rearward end of developing-out paper 3 is floated.But, when making the roller shape as rear end anvil roll 10, the friction force in the time of reducing orlop developing-out paper 3 more and be supplied to.
Above bottom log sheet guide member 6, developing-out paper 3 is pressed against pushing roller 11 on the aftermentioned paper feed roller 14, the top position that rotatable earth's axis Zhi Zaiyu paper feed roller 14 is relative.This pushing roller 11 utilizes its deadweight to play the effect of weight, from top pushing developing-out paper 3, so, make with heavier metals such as brass.Whole Width above developing-out paper 3 leading section sides acts on downwards.The outer peripheral face of this pushing roller 11 is processed to not damage the rugosity of developing-out paper 3 finish coats.
The bolster of pushing roller 11 is bearing near its both ends on the supporting arm 12,12 that omits the L font.These supporting arms 12,12 supported by the roller supporting guide member 13 that sets along leading section log sheet guide member 8 above-below directions, but above-below direction are guided with moving freely.Therefore, when developing-out paper 3 has reduced, pushing roller 11 by its deadweight by 13 guidings of roller supporting guide member move down, always be crimped on the superiors' developing-out paper 3 above, push down developing-out paper 3 from the top.
Therefore, even when developing-out paper 3 becomes last, owing to this developing-out paper 3 can be crimped on the paper feed roller 14, so can prevent the supply fault of developing-out paper 3.
In the upper surface of supporting arm 12, setting and to push the holding member 12a that roller 11 remains on the top position.This holding member 12a constitutes with magnet 12a, with this magnet 12a be adsorbed on supporting arm 12 on the 2a of metal rim portion of the outstanding bogie side frame 2 in top, just can when additional developing-out paper 3, will push roller 11 and remain on the top position.
It is single cylindrical object that pushing roller 11 is not limited to, and also can set several rollers with predetermined space along the Width of developing-out paper 3.In addition, also being not limited to is the shape of roller, as long as have the curved face part of not damaging developing-out paper 3 surfaces.
Above-mentioned pushing roller 11 is to utilize its deadweight to developing-out paper 3 applied pressures, but also can utilize the elastic force of elastomeric element such as spring, exerts pressure.For example, can be installed in pushing roller 11 leading section of leaf spring (figure do not show), it is first-class that this leaf spring is fixed on bogie side frame 2, utilizes the elastic force towards the below of leaf spring, and developing-out paper 3 is pressed on the paper feed roller 14 always.
Above-mentioned accommodation structure 4 integral body tilt towards the paper supply direction.This be for the supply that makes developing-out paper 3 more smooth.But if leaning angle is excessive, then center of gravity moves on to the leading section of developing-out paper 3, can cause the problem of once supplying with several developing-out papers 3.Therefore, according to experimental result, the inclination of accommodation structure 4 is set like this in the present embodiment: making the weight that acts on the developing-out paper 3 on paper feed roller 14 and the rearward end anvil roll 10 is 4: 3 ratio.
Paper-feeding mechanism 5 will be positioned in the developing-out paper 3 in the accommodation structure 4, supply with to recording device 34 one by one successively from undermost developing-out paper 3.That is, be provided in the gap portion between bottom log sheet guide member 6 front and the leading section log sheet guide member 8, paper feed roller 14 can be rotated to support on the bogie side frame 2 and with the bottom surface of developing-out paper 3 and contacts.Paper supply direction front side (right side of Fig. 1) at this paper feed roller 14 is extending paper supply guide member 15, the developing-out paper of supplying with from accommodation structure 4 by paper feed roller 14 3 to the paper supply direction guiding.
In paper supply the place ahead of paper supply guide member 15, setting the driven voller 17 that transports roller 16 and external and driven rotation with it.Developing-out paper 3 is transported roller 16 and driven voller 17 by these and is seizing on both sides by the arms and transport.Distance from the S. A. 14a of paper feed roller 14 to the S. A. 16a that transports roller 16, the length of the developing-out paper of supplying with than paper feed roller 14 3 is short, as described later, with mono-CD-ROM drive motor 22, developing-out paper 3 is moved to from paper feed roller 14 transport roller 16.
In the place ahead of transporting of transporting roller 16, setting with developing-out paper 3 toward recording devices 34 guidings transport guide member 18, in this place ahead of transporting of transporting guide member 18, setting the feeding-in roll 19 in the recording device 34.By the developing-out paper 3 that transports guide member 18 guiding, sent into recording portion in the recording device 34 by this feeding-in roll 19.
In the position, front of transporting roller 16 and driven voller 17, setting the 1st feed in sensor 20a, in the position, front of feeding-in roll 19, setting the 2nd feed in sensor 20b.The 1st feed in sensor 20a and the 2nd feed in sensor 20b detect developing-out paper 3 respectively and pass through the desired location.In the present embodiment, the elastic force that does not show spring with figure pushes away the 1st feed in sensor 20a and the 2nd feed in sensor 20b toward the top, makes it from paper supply guide member 15 or to transport guide member 18 outstanding slightly.Like this, when developing-out paper 3 by the 1st feed in sensor 20a and the 2nd feed in sensor 20b above the time, resist above-mentioned elastic force and make each sensor 20a, 20b move and detect passing through of developing-out paper 3 downwards.
Also can utilize reflection of light speed etc. to make the 1st feed in sensor 20a and the 2nd feed in sensor 20b detect passing through of developing-out paper 3.In addition, paper feed roller 14, transport roller 16 and feeding-in roll 19, utilize friction force that developing-out paper 3 is supplied with toward the paper supply directions, so, adopt High molecular material such as rubber to make, so that improve the friction force with developing-out paper 3.
In the end of the S. A. 14a of paper feed roller 14, with power transmission tooth wheels 21, connecting stepper motor 22 as CD-ROM drive motor by the paper supply that constitutes by plurality of gears.On the other hand, in the end of the S. A. 16a that transports roller 16, with power transmission tooth wheels 23, connecting a stepper motor 22 identical with paper feed roller 14 by transporting of constituting by plurality of gears.That is, above-mentioned paper feed roller 14 and transport roller 16, respectively by paper supply with power transmission tooth wheels 21 or transport usefulness power transmission tooth wheels 23 by same stepper motor 22 driven in rotation.
Paper supply power transmission tooth wheels 21, by being entrenched in driven wheel 24 on the motor drive shaft 22a, just changeing and reverse with engaging and disengaging gear 25, paper supply with center tooth wheels 26 be entrenched in paper supply gear 27 on the S. A. 14a of paper feed roller 14, the propulsive effort of stepper motor 22 is passed to paper feed roller 14.On the other hand, transport with power transmission tooth wheels 23, by above-mentioned driven wheel 24, just change and reverse with engaging and disengaging gear 25, transport with center tooth wheels 28 and be entrenched in and transport gear 29 on the S. A. 16a that transports roller 16, the propulsive effort of stepper motor 22 passed to transport roller 16.
Just changeing and reversing, constituting by the clutch plate 32 of the 1st clutch gear the 30, the 2nd clutch gear 31 and two bolsters that are connected this gear with engaging and disengaging gear 25.The 1st clutch gear 30 can be rotated to support on the bogie side frame 2, and meshes with driven wheel 24.The 2nd clutch gear 31 can move freely, and its bolster 31a is not fixed on the bogie side frame 2.But, the 2nd clutch gear 31 and 30 engagements of the 1st clutch gear, connect two bolster 30a, 31a by clutch plate 32, and, on the bolster 31a of the 2nd clutch gear 31, coil spring (figure does not show) in the trip embedding, and the side of these helical spring both ends and the 2nd clutch gear 31 and the side of clutch plate 32 join, and makes in generation friction between the two.Therefore, the 2nd clutch gear 31 is swung towards its hand of rotation along with the rotation of the 1st clutch gear 30.
More particularly, when driven wheel 24 was just changeing (right-hand revolution among Fig. 1), the 1st clutch gear 30 conter clockwises were to rotation, and with its servo-actuated ground, the 2nd clutch gear 31 moves and meshes with center tooth wheels 26 with paper supply towards anticlockwise direction.When driven wheel 24 reversed (anticlockwise direction rotation among Fig. 1), the 1st clutch gear 30 was to right-hand revolution, with its servo-actuated ground, the 2nd clutch gear 31 move toward the clockwise direction and with transport with 28 engagements of center tooth wheels.Therefore, in the time of driving paper feed roller 14 drivings, stepper motor 22 is just being changeed; Drive when transporting roller 16 rotations, stepper motor 22 is reversed.
The switching of just changeing and reversing of this stepper motor 22 is by controlling with stepper motor 22 bonded assembly control mechanisms 33.Its switching time is according to the information of the passing through decision from the developing-out paper 3 of the 1st feed in sensor 20a.
That is, before the 1st feed in sensor 20a detected passing through of developing-out paper 3, stepper motor 22 was just changeing, and drove paper feed roller 14 rotations.Then, because of the rotation of this paper feed roller 14, developing-out paper 3 is supplied to, above the 1st feed in sensor 20a, when the 1st feed in sensor 20a detected passing through of developing-out paper 3 and information passed to control mechanism 33, this control mechanism 33 made its reverse after stepper motor 22 is driven with predetermined step number.Because the reverse of this stepper motor 22, just changeing the 2nd clutch gear 31 that reverses with engaging and disengaging gear 25 moves to clockwise direction, remove with paper supply with the engagement of center tooth wheels 26 when transporting with 28 engagements of center tooth wheels, transport roller 16 and rotate by transporting gear 29.Therefore, the rotation of paper feed roller 14 is stopped, and only transports roller 16 and transports developing-out paper 3.
Developing-out paper 3 is transported roller 16 on one side and transports by transporting guide member 18 guidings on one side, by above the 2nd feed in sensor 20b time, transmit by information to control mechanism 33 from the 2nd feed in sensor 20b, control mechanism 33 drives feeding-in roll 19, and developing-out paper 3 is sent in the recording device 34.
Below, with reference to diagram of circuit shown in Figure 2,33 pairs of paper feed rollers of above-mentioned control mechanism 14 and the driving method that transports roller 16 are described.
Among Fig. 2, when paper feed begins paper supply, enter step ST1, stepper motor 22 drives towards positive veer.Because the just commentaries on classics of this stepper motor, above-mentioned just the commentaries on classics reversed engaging and disengaging gear 25 and just is switched to and changes one's position, and the 2nd clutch gear 31 and paper supply are with 26 engagements of center tooth wheels, simultaneously, because paper supply is with the rotation of center tooth wheels 26 and paper supply gear 27, paper feed roller 14 right-hand revolution in Fig. 1.
Then, at step ST2, stepper motor 22 is just changeing when driving for 150 steps, enters step ST3, judge the 1st feed in sensor 20a whether because of developing-out paper 3 pass through connect.This step ST3 be judged as "Yes" the time, enter step ST4, during for "No", enter step ST5.
When entering step ST4, that is, the 1st feed in sensor 20a is when connecting, and stepper motor 22 is just changeing and drove for 80 steps, supplies with developing-out paper 3, the leading section of developing-out paper 3 with transport roller 16 and join.At this moment, the distance from the S. A. 14a of paper feed roller 14 to the S. A. 16a that transports roller 16, shorter than the length of 14 developing-out papers 3 that can supply with of paper feed roller, so, promptly use mono-CD-ROM drive motor 22, also developing-out paper can be moved to from paper feed roller 14 and transport roller 16.
On the other hand, when entering step ST5, that is, when the 1st feed in sensor 20a is not connection, judge whether stepper motor 22 rotated for 2000 steps.
This 2000 step is to make developing-out paper 3 move to the required step number of the 1st feed in sensor 20a from the positive turn-off beginning of stepper motor 22, if non-slip between paper feed roller 14 and the developing-out paper 3, then regular step number was 1000 steps.That is to say that stepper motor 22 is with 2 times of regular step number i.e. above drivings of 2000 steps, and if the 1st feed in sensor 20a when connecting, then should consider to have taken place fault.Therefore, at step ST5, when "Yes", promptly stepper motor 22 drove for 2000 steps when above, entered step ST6, carried out fault handling.When being "No", promptly stepper motor 22 did not drive for 2000 steps when above, returned step ST2, stepper motor is just being changeed drove for 150 steps.At this moment, before the rotation of 150 steps drives, when the 1st feed in sensor 20a is connection, enter step ST4.
Then, at step ST4, make stepper motor 22 just change for 80 steps after, enter step ST7, to transport roller 16 and stepper motor 22 reversed drive in order to drive.The reverse of this stepper motor 22 drives, make that just changeing reverse engaging and disengaging gear 25 switches to the reverse side, the 2nd clutch gear 31 with transport with 28 engagements of center tooth wheels, transport roller 16 and transport with the center tooth wheels 28 and the rotation of transporting gear 29 by these, begin right-hand revolution towards Fig. 1.
After the reverse of stepper motor 22 drives beginning in step ST7, enter step ST8, stepper motor 22 reverses and drove for 150 steps, enters step ST9.
At step ST9, judge whether the 2nd feed in sensor 20b is connection, when "Yes", enters step ST10, make 80 steps of stepper motor 22 rotation, after being provided in feeding-in roll 19 in the recording device 34 and joining, the supply of this developing-out paper 3 finishes.Then, feeding-in roll 19 is driven, and the operation of recording of recording device 34 begins.When being "No", when promptly the 2nd feed in sensor 20b is not for connection, enter step ST11, judge whether stepper motor 22 drove for 2000 steps, during for "Yes", entered step ST12, carried out fault handling.During for "No", return step ST8, make stepper motor 22 reverse for 150 steps once more.Reverse in the way at it, when the 2nd feed in sensor 20b is connection, enter next step ST9.
The driving method of above-mentioned control mechanism 33, available mono-stepper motor 22 drive paper feed roller 14 and transport roller 16 rotations.
Below, 33 pairs of paper feed rollers of control mechanism 14 and the method for control speed that transports roller 16 are described.
In the present embodiment, in order to improve between developing-out paper 3 and the paper feed roller 14, and developing-out paper 3 and transport friction force between the roller 16, the rotative speed of stepper motor 22 is temporarily lowered.That is, in each step of the driving method of stepper motor 22 shown in Figure 2,, as illustrated in fig. 3, stepper motor 22 is alternately switched to high speed revolution and low speed rotation at step ST2 and step ST8.
Below, the principle that concerns between friction force and the rotative speed is described with reference to Fig. 4.
Suppose, orlop developing-out paper 3 is μ 1 with the friction coefficient of the 2nd developing-out paper 3 reciprocal, paper feed roller 14 (or transporting roller 16) is μ 2 with the friction coefficient of developing-out paper 3, the transport force of developing-out paper 3 is in the torque of F, stepper motor 22, torque when the torque during high speed revolution is T1, low speed rotation is T2, torque based on the paper feed roller 14 (or transporting roller 16) of this torque is T3, the radius of paper feed roller 14 (or transporting roller 16) is r, is P with respect to the crimp force of the developing-out paper 3 of paper feed roller 14 (or transporting roller 16).In addition, μ 2＞μ 1, according to the characteristic of stepper motor 22, T2＞T1.
According to above prerequisite, the shipping conditions of developing-out paper 3 is F＞P μ 1, in addition, transport force F at this moment has the relation of F=T3/r.
Therefore, paper feed roller 14 or to transport the torque T3 of roller 16 big more, the transport force F of developing-out paper 3 and P μ 1Difference big more, transport force increases.For the torque that increases this paper feed roller 14 or transport roller 16, as long as increase the torque of stepper motor 22.The stepper motor low speed rotation can be realized that this rotating speed increases.
According to this principle, in the present embodiment, when paper feed roller 14 is supplied with developing-out papers 3 and when transporting roller 16 and transport developing-out paper 3, after making stepper motor 22 at high speeds drive predetermined step number, temporarily switch to low speed, increase paper feed roller 14 and the torque T3 that transports roller 16, increase friction force, that is, increase transport force F, to supply with developing-out paper 3 effectively.Then, return high speed revolution again, continue the supply of developing-out paper 3 and transport.
In the method for control speed of the stepper motor 22 that above-mentioned control mechanism 33 carries out, be alternately to switch high speed revolution and low speed rotation, just be not limited thereto.For example, when paper feed roller 14 and transport roller 16 and developing-out paper 3 between produce when skidding, also can make paper feed roller 14 and transport roller 16 temporarily to stop, friction force is transformed to friction of rest from friction of motion, increase the transport force of developing-out paper 3 with this.In addition, also can at certain intervals stepper motor 22 alternately be switched to slew mode and halted state.
Friction of motion described here is the resistance when instigating object of which movement, and described friction of rest is meant the resistance when object is about to setting in motion, and friction of rest is bigger than friction of motion.
In addition, in the present embodiment, in order to supply with and transport developing-out paper 3 one by one, in the supply of developing-out paper 3 with transport in the way, be conceived to increase and decrease off and on the friction drag this point, also paper feed roller 14 alternately can be formed the different face of surface roughness with the outer peripheral face that transports roller 16 at hand of rotation.With such paper feed roller 14 with transport roller 16,, also can increase the friction force in the paper supply way even the rotative speed that control mechanism 33 does not make paper feed roller 14 or transports roller 16 has special variation.
Below, the effect of paper feed of the present invention is described.
Paper supply in the present embodiment is that the instruction by control mechanism 33 begins.According to the instruction of control mechanism 33, stepper motor 22 beginning is just being changeed when driving, just changeing to reverse engaging and disengaging gear 25 and move by driven wheel 24 anticlockwise direction in Fig. 1, with paper supply with 26 engagements of center tooth wheels.The propulsive effort of stepper motor 22 is transmitted with center tooth wheels 26 successively by these paper supplies, when 27 rotations of paper supply gear, is bearing in the right-hand revolution of coaxial paper feed roller 14 towards Fig. 1 with it.Paper feed roller 14 moves developing-out paper 3 with the friction force of orlop developing-out paper 3 toward the paper supply direction.At this moment, the leading section of orlop developing-out paper 3 is separated with other developing-out paper 3 by the burbling area 9 that is formed on leading section log sheet guide member 18 lower ends, by bottom log sheet guide member 6 and 7 guidings of sidepiece log sheet guide member, supplies with one by one.
When paper supply, be provided in the rearward end anvil roll 10 of bottom log sheet guide member 6 back square ends, the rear end side bottom surface of the developing-out paper 3 more than the 2nd reciprocal is being supported with lifting, so, orlop developing-out paper 3 reduces with the friction force of the 2nd developing-out paper 3 reciprocal, can prevent that orlop developing-out paper 3 and the developing-out paper 3 of inverse more than the 2nd are sent together overlappingly.
From stacked developing-out paper 3 tops pushing developing-out paper 3, even the number of developing-out paper 3 reduces, even during only remaining last developing-out paper 3, this developing-out paper 3 also is urged on paper feed roller 14 pushing roller 11 by its deadweight, produces friction force and can be supplied to.
Developing-out paper 3 by 15 guidings of paper supply guide member, is supplied with towards transporting roller 16 after being supplied with from bottom log sheet guide member 6 by paper feed roller 14.Be provided in the 1st feed in sensor 20a that transports roller 16 front sides, when detecting the passing through of developing-out paper 3, this information passed to control 33.Receive the control mechanism 33 of this information, make stepper motor 80 steps of 22 rotations, make developing-out paper 3 and transport roller 16 and join.
Then, control mechanism 33 reverses stepper motor 22, makes just to change to reverse engaging and disengaging gear 25 clockwise direction in Fig. 1 and move, and transports with 28 engagements of center tooth wheels.Like this, transport gear 29, make and transport gear 29 with this and be bearing in coaxial roller 16 right-hand revolution in Fig. 1 that transports by transporting propulsive effort to be passed to center tooth wheels 28.Along with this transports the rotation of roller 16, driven voller 17 also rotates, and developing-out paper 3 is being seized on both sides by the arms by them and transported.
This developing-out paper 3 is guided by being provided in the guide member 18 that transports that transports the place ahead that transports roller 16, direction towards recording device 34 is advanced, when being transported to feeding-in roll 19 fronts in the recording device 34, the 2nd feed in sensor 20b detects it, and it is passed to control mechanism 33 by information.This control mechanism 33 receives this by after the information, makes stepper motor 22 reverse for 80 steps, and developing-out paper 3 and feeding-in roll 19 are joined.
After above-mentioned joining, the action of recording device 34 opening entries.Like this, the supply of a developing-out paper 3 and transport end, when then carrying out the supply of next developing-out paper 3, control mechanism 33 makes stepper motor 22 just change again, drives paper feed roller 14 rotations.
Therefore, according to embodiments of the invention since pushing roller 11 by deadweight from top pushing stacked developing-out paper 3, so, can supply with developing-out paper 3 effectively until last.Simultaneously, pushing roller 11 can suppress the friction with the superiors developing-out paper 3, prevents this developing-out paper 3 damages.
In addition, though paper feed roller 14 or transport roller 16 and developing-out paper 3 between produce and skid because control mechanism 33 can make paper feed roller 14 and transport roller 16 low speed rotation or stop, increase friction force with this, thereby increase transport force, so, can eliminate slipping state immediately, supply with, transport developing-out paper 3 effectively.
The invention is not restricted to the embodiments described, can do various changes as required.
For example, in the present embodiment,, describe with developing-out paper 3, but be not limited to this, also be applicable to common paper, OHP paper, postcard, ground paper etc. as log sheet.
As mentioned above, according to paper feed of the present invention, can be suppressed at paper feed roller or transport roller and log sheet between produce and skid, can effectively log sheet be supplied with one by one and transport.

Claims (4)

1. paper feed, have supporting log sheet from the below and with it to the bottom of paper supply direction guiding log sheet guide member, paper supply direction front side at this bottom log sheet guide member, setting paper feed roller, also has control mechanism, this control mechanism makes the paper feed roller rotation, and mounting several log sheets on the log sheet guide member of bottom are in turn supplied with recording device from the below; It is characterized in that above-mentioned control setup makes the rotation of paper feed roller alternately switch to high speed revolution and low speed rotation.
2. paper feed as claimed in claim 1, it is characterized in that, paper supply direction front side at paper feed roller, setting and transporting roller, by just change reverse with engaging and disengaging gear with paper feed roller with transport roller and be connected with the mono-stepper motor, above-mentioned control mechanism is just changeing the clutch that reverses with engaging and disengaging gear by switching, and makes paper feed roller and transports roller and rotate successively.
3. paper feed, have supporting log sheet from the below and with it to the bottom of paper supply direction guiding log sheet guide member, paper supply direction front side at this bottom log sheet guide member, setting paper feed roller, also has control mechanism, this control mechanism makes the paper feed roller rotation, and mounting several log sheets on the log sheet guide member of bottom are in turn supplied with recording device from the below; It is characterized in that above-mentioned control setup alternately switches to slew mode and halted state with paper feed roller.
4. paper feed as claimed in claim 3, it is characterized in that, paper supply direction front side at paper feed roller, setting and transporting roller, by just change reverse with engaging and disengaging gear with paper feed roller with transport roller and be connected with the mono-stepper motor, above-mentioned control mechanism is just changeing the clutch that reverses with engaging and disengaging gear by switching, and makes paper feed roller and transports roller and rotate successively.
CN98101489A 1997-06-03 1998-06-03 Paper-feeding device Expired - Fee Related CN1116214C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP145423/1997 1997-06-03
JP145423/97 1997-06-03
JP9145423A JPH10329965A (en) 1997-06-03 1997-06-03 Paper feeder

Publications (2)

Publication Number Publication Date
CN1200989A CN1200989A (en) 1998-12-09
CN1116214C true CN1116214C (en) 2003-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN98101489A Expired - Fee Related CN1116214C (en) 1997-06-03 1998-06-03 Paper-feeding device

Country Status (4)

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JP (1) JPH10329965A (en)
KR (1) KR100265497B1 (en)
CN (1) CN1116214C (en)
TW (1) TW543550U (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2709169Y (en) 2002-03-29 2005-07-13 精工爱普生株式会社 Recording equipment
JP4944445B2 (en) * 2006-01-05 2012-05-30 株式会社リコー Image forming apparatus, conveyance method, and program
JP2008044708A (en) * 2006-08-14 2008-02-28 Oki Electric Ind Co Ltd Paper sheet separation and delivery mechanism

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TW543550U (en) 2003-07-21
CN1200989A (en) 1998-12-09
KR100265497B1 (en) 2000-09-15
KR19990006521A (en) 1999-01-25
JPH10329965A (en) 1998-12-15

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