CN1220946A - Automatic sheet feeding device of printer - Google Patents
Automatic sheet feeding device of printer Download PDFInfo
- Publication number
- CN1220946A CN1220946A CN98123141A CN98123141A CN1220946A CN 1220946 A CN1220946 A CN 1220946A CN 98123141 A CN98123141 A CN 98123141A CN 98123141 A CN98123141 A CN 98123141A CN 1220946 A CN1220946 A CN 1220946A
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- Prior art keywords
- paper
- roller
- paper pick
- driven wheel
- pick
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- 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
- B65H3/0669—Driving devices therefor
Abstract
The present invention relates to an automatic sheet feeding device of a printer. After a motor is rotated in reverse, claws which engage with a ratch are removed by a bump formed on a hub to prevent rotation force of a pickup roller transfering to a single clutch which cut and transmits a driving force of transmitting motor to the pickup roller. Moreover, contrarotation of the pickup roller is prevented reliably when the motor is rotated in reverse even rotation force of the motor is transmited to a pickup shaft, in reason of sawteeth of the ratch member on the pickup shaft engaging with sawteeth of a stop lever which enables mount rotately on a sheet feeding stage.
Description
The present invention relates to connect the automatic paper feeding device that a ground continues paper to one in printing machine, be particularly related to, the automatic paper feeding device of ink-jet printer, when motor counter-rotating alignment paper, prevent the paper pick-up roller counter-rotating, simultaneously, prevent during otch on the engaged pawl ratchet that because the one-way clutch distortion that the rotation forward of motor causes, ratchet is mounted in prevents paper pick-up roller to change forward on the paper pick-up shaft.
In general, printing machine is an output device, accepts the signal of telecommunication from computer, and the data of monitor are printed on paper, and printing machine has at least one print head.
As shown in Figure 1, this class printing machine comprises: a feedboard for paper 120, to the printing machine paper supply; A paper transports platform 150, transports the paper of putting from feedboard for paper 120 towards color bits; A print station 140 is transporting printed data on the paper that platform 150 transports; With row's paper platform 160, output is by the paper of print station 140 printings, and print station 140 is mounted on the mainboard 112, and mainboard 112 is installed in the housing 111.
Feedboard for paper 120 comprises: a sheet feed stacker 122, be equipped with a stacker 100 in it; With a semicircular paper pick-up roller 124, pick up in sheet feed stacker 122 paper 100 of dress, and it is transported to paper transports platform 150.Will be when printing machine to be supplied with at the paper that installs on the sheet feed stacker 122, the elasticity of a paper supply spring 119 of establishing between the bottom by the top of framework 121 and sheet feed stacker 122 will compress on the principal direction of dress on the sheet feed stacker 122.Uppermost paper 100 contacts with paper pick-up roller 124, is picked up by paper pick-up roller 124 rotations.The paper of being picked up by paper pick-up roller 124 100 is by transporting friction roller 151 on the platform 150 and the route between the paper feed roller 152 at the paper along the paper supply route, and transported to the printing position by the rotation of friction roller 151 and paper feed roller 152.
Paper by under(-)chassis 161 row's of coming paper platforms 160 on the time, by the paper touch roll 160 on row's paper platform 160 and the rotation of paper distributing roller 163, from printing machine, paper is discharged.
The driving force of motor 125 is delivered to gear 129 by idler gear 132, and when motor 125 changeed forward, the rotation of gear 129 was delivered to paper pick-up roller 124, but when motor 125 oppositely changes, by an one-way clutch, is not delivered to paper pick-up roller 124.And sheet feed stacker 122 is driven by the cam 135 that is installed on the cam rollers 134.Cam rollers 134 is by the driving force rotation of the motor 125 that transmits by idler gear 132,133.
In the conventional feedboard for paper 120 of above-mentioned driving, when motor 125 forwards when driving (at this moment, paper 100 is picked up by paper pick-up roller 124), driving force is delivered to cam rollers 134 from pitch diameter gear 127 by idler gear 130-133, and the rotation of cam rollers 134 is worked cam sheet feed stacker 122 is promoted, make uppermost paper contact paper pick-up roller 124, and driven wheel 129 rotates forward and makes the paper pick-up roller 124 of semicircle can pick up uppermost paper, and it is transported to paper feed roller 152.
When as illustrated in fig. 2 paper pick-up roller 124 being set, when paper pick-up roller 124 is picked up paper and transport to paper feed roller 152, sensor 136 is measured the position of paper pick-up roller 124, and in signal motor 125 counter-rotatings of preset time according to sensor 136, paper feed roller 152 is reversed driving by the counter-rotating of motor 125.When motor 125 counter-rotatings, by the effect of one-way clutch, the driving force of motor 125 is interrupted, thereby prevents the counter-rotating of paper pick-up roller 124.Therefore, as shown in Figure 2, paper feed roller 152 counter-rotatings are curled paper 100.The purpose of this counter-rotating of paper feed roller 152 is with the front of paper 100 (towards the end of the paper of printing machine) alignment, with the printing error that prevents from can take place when paper 100 is unjustified.
When paper pick-up roller 124 rotated again after the counter-rotating of paper feed roller 152 finished, to paper feed roller 152 paper supplies, simultaneously, from the process end of picking up paper of paper pick-up roller 124, and paper can align exactly from paper pick-up roller 124.
As mentioned above, motor 125 can be owing to the measured signal counter-rotating of sensor 136; But be to use sensor 136 reverse motors 125 to require complicated apparatus, therefore in motor 125 counter-rotatings, utilized ratchet 252 and ratchet 248 already, and without sensor.
In Fig. 3, illustrate, prevent the one-way clutch of paper pick-up roller 124 counter-rotating, and the structure of reverse motor 125 in due course.
As shown in Figure 3, the driving force of motor 125 is mounted on the paper pick-up shaft 241 to the driven wheel 129 that paper pick-up roller 124 transmits by paper pick-up shaft 241, forms one first column part 291 on a side of driven wheel 129, it has big diameter; With one second column part 292, it has little diameter.First column part 291 has a groove 246a of circumferencial direction.In addition, thrust piece 247 has an annular, and at its protruding 247a of every end formation, thrust piece 247 is positioned among the groove 246a.Second column part 292 extends to the outside of paper pick-up shaft 241 from first column part 291.
As shown in Figure 3, a spring clutch 251 is installed on the periphery of second column part 292, and spring clutch 251 is to be made of the turn that twines in the reverse directions of paper pick-up shaft 241.One end 251a of spring clutch 251 is fixed on the gear 129, and its other end is fixed on the groove 257 that forms in hub 254, and hub 254, is fixed on the end surfaces of paper pick-up shaft 241 as a bolt by securing member 258.
One end of ratchet 252 separates by the end parts of hub 254 with the preset distance and first column part 291, and ratchet 252 is installed the feasible spring clutch 251 that is installed on second column part 292 that wraps up.As shown in Figure 3, ratchet 252 has the otch 253 on the one side, and the ratchet 248 of these otch 253 engagement pawl parts 250, pallet piece 250 rotatably are installed in the hole 244 that forms in feedboard for paper 120.
The structure of one-way clutch as mentioned above, when paper pick-up roller 124 is rotated forward by the rotation of driven wheel, spring clutch 257 draws hub 254, one end surface of ratchet 255 is closely contacted with the first column part 291a of driven wheel 129, and this moment, driven wheel 129 closely contacted paper pick-up roller 241, consequently, the driving force of driven wheel 129 is delivered to paper pick-up roller 124.When paper pick-up roller 124 continuation rotations and in place, and shown in Fig. 4 A, during otch 253 engagement pawl 248 of ratchet 252, motor 125 counter-rotating alignment paper 100, paper feed roller 152 is owing to the counter-rotating of motor 125 is reversed as shown in Figure 2.
The anti-driving force of motor 125 arrives driven wheel 129 by several gear transmission, thereby driven wheel 129 also reverses.Because the turn of spring clutch 251 is loose, paper pick-up roller 241 is urgent to be connected airtight to touch in the driven wheel 129 and throws off, and an end of turn 251 is connected to driven wheel 129, and other end 251b connects hub 254.When driven wheel 129 counter-rotatings, the converse rotating force of driven wheel 129 by above-mentioned spring clutch 251, is not passed to paper pick-up roller 124.Because the time of counter-rotating is very short, paper pick-up roller 124 counter-rotatings that caused by the distortion of spring clutch 251 do not take place.
In other words, because spring clutch 251 twines with driven wheel 129 reverse directions, when driven wheel 129 rotated forward, hub 254 compressed ratchet 251 to driven wheel 129.Thereby ratchet 252 and driven wheel 129 equidirectional rotations.But because when driven wheel 129 counter-rotatings, spring clutch 251 separates ratchet 252 and driven wheel 129, the driving force of driven wheel 129 is not delivered to ratchet 252.Ratchet 252 remains static.
Simultaneously, when driven wheel 129 counter-rotating, be installed in the thrust piece 247 on the groove 246a of first column part 291 of driven wheel 129, together rotate with driven wheel 129.Therefore, its protruding 248a is positioned at the ratchet 248 between the protruding 247a of thrust piece 247, and by the protruding 247a of thrust piece 247 direction of arrow rotation along Fig. 4 B, shown in Fig. 4 B, ratchet 248 is positioned in and breaks away from the position that engages with otch 253.
In the state shown in Fig. 4 B, when CD-ROM drive motor 125 rotated forward, the front of paper 100 was by the rotation alignment of paper pick-up roller 124, and paper pick-up roller 124 continuation rotations, transports the paper 100 of alignment to paper feed roller 152.In addition, shown in Fig. 4 C, the ratchet 252 that together rotates with paper pick-up roller 124 can with under the situation that ratchet 248 engages not rotate at otch 253.
At this moment, the cam 135 that is installed on the cam rollers 134 drives sheet feed stacker 122, and when the circular portion contact of cam 135 connects the movable piece 134 of sheet feed stacker 122, as shown in Figure 1, sheet feed stacker 122 is compressed to paper pick-up roller 124 by sheet feed stacker spring 119, make paper is fed to printing machine, and make paper pick-up roller 124 contact paper 100 like this.
As shown in Figure 2, paper 100 by paper pick-up roller 124 when printing machine is supplied with, sheet feed stacker 122 is left with paper pick-up roller on sheet feed stacker spring 119.Be in printing during this time, or wait for paper supply.
As mentioned above, the structure of the automatic paper feeding device of common printing machine is, utilize the paper feed roller counter-rotating, make ratchet leave preset distance from the position that engages with the otch of ratchet and drive paper pick-up roller, to prevent after the paper feed roller counter-rotating, when paper pick-up roller rotates forward, because the restriction that the paper pick-up roller that ratchet and engaging of ratchet are caused rotates.
But, in the automatic paper feeding device of above-mentioned common printing machine, ratchet is not sufficiently from the state that the position that engages with the otch of ratchet is left, when paper pick-up roller rotates paper supply forward, the revolving force of paper pick-up roller is passed to spring clutch, this makes the spring clutch distortion, and spring clutch is used for preventing that converse rotating force from transmitting to paper pick-up roller when paper feed roller reverses, so the distortion of spring clutch can make the paper supply operation accurately not finish.
And when paper feed roller reversed, because frictional force such as spring clutch, moment loading was to paper pick-up roller, and this moment also can make the paper pick-up roller counter-rotating.At this moment, because distance changes between ratchet and otch, when paper pick-up roller rotated paper supply forward, the ratchet otch became and engaged pawl, made paper pick-up roller not rotate.Therefore taking place can not be to the phenomenon of printing machine paper supply.
Therefore, in order to overcome these shortcomings of routine techniques, the purpose of this invention is to provide a kind of printing machine automatic paper feeding device, it can be in ratchet and otch engagement state, the revolving force forward that prevents paper pick-up shaft is delivered to spring clutch, thereby prevents because the paper supply obstacle that the distortion of spring clutch causes.
Another object of the present invention provides a kind of automatic paper feeding device of printing machine, it can, prevent paper pick-up roller counter-rotating reliably, thereby the paper supply obstacle that is caused by the paper pick-up roller counter-rotating can prevent.
When reaching these and other purposes, and according to purposes of the present invention, as embodiment represented with broad description, the automatic paper feeding device of the printing machine that provides comprises: a semicircle paper pick-up roller, by the rotation forward of driven wheel, pick up the paper of on sheet feed stacker, adorning; An one-way clutch has the turn clutch that twines in the direction of rotation of paper pick-up roller, and its end is fixed to driven wheel, the other end is fixed to paper pick-up shaft, and a mechanism that limits and discharge rotation, by the rotation forward of restriction paper pick-up roller, determine the reversing time of driven wheel; With a sheet feed stacker starter, the action of sheet feed stacker and paper pick-up roller is moved back and forth in combination.
The mechanism of restriction and relieving paper pick-up roller comprises: a ratchet, and it installs to such an extent that together rotate with paper pick-up roller; A ratchet, restriction ratchet rotation when driven wheel reverses engages with otch on the pawl wheel; With a hub, be provided with on a predetermined angular ground backward from otch by the paper pick-up roller counter-rotating, a projection that has on excircle is used for releasing ratchet to discharging the position that engages, and hub is installed on the paper pick-up shaft, so that compress ratchet to driven wheel.
And, a thrust piece, every end has a projection, when driven wheel reverses, with described ratchet from position that the otch of ratchet engages release, described thrust piece is installed on the described driven wheel.
Preferably, printing machine automatic paper feeding device of the present invention also comprises the device that stops the paper pick-up roller counter-rotating when driven wheel reverses.
The counter-rotating holdout device comprises: a ratchet member, be installed on the paper pick-up shaft, and paper pick-up shaft has a cam and is used to compress sheet feed stacker, and has several sawtooth, and ratchet member is provided with in paper pick-up roller leaves the angle of paper feed roller; A locking lever has several sawtooth that engage with the sawtooth that forms on the ratchet member, when it engages with ratchet member, stops the paper pick-up roller counter-rotating; With a spring, be used for locking lever is compressed to ratchet member.
Below with reference to the detailed description of accompanying drawing, will make the present invention and advantage thereof easier to be clear, the same or analogous assembly of identical digital representative among the figure.
Fig. 1 is a constructed profile, and the operation principle of common printing machine automatic paper feeding device to the printing machine paper supply is shown;
Fig. 2 is when paper feed roller reverses, the constructed profile of the automatic paper feeding device of Fig. 1 operation principle when the printing machine paper supply;
Fig. 3 is in order to cut off the one-way clutch STRUCTURE DECOMPOSITION perspective view of installing on driving force and the paper pick-up shaft that is connected driving force to paper pick-up roller when paper feed roller reverses;
Fig. 4 A-4C is in the one-way clutch shown in Figure 3, the working state figure of restriction and relieving paper pick-up roller rotating mechanism;
Fig. 5 is an one-way clutch structural representation decomposition diagram of the present invention;
Fig. 6 A-6C is in the one-way clutch shown in Figure 5, restriction and decontrol the working state figure of paper pick-up roller rotating mechanism;
Fig. 7 is the perspective illustration that the present invention stops the paper pick-up roller reversing device;
Fig. 8 is a diagrammatic side view, the mechanism that stops the paper pick-up roller counter-rotating is shown how stops the paper pick-up roller counter-rotating.
Following explanation in conjunction with the accompanying drawings will make the present invention understand.
As shown in Figure 5, driven wheel 2 is installed on the paper pick-up shaft 3, and paper pick-up roller 1 is installed on the paper pick-up shaft 3, as mentioned above, the motor (not shown) along forwards to driving make paper pick-up roller 1 along forwards to rotation.Forwards to rotation, paper pick-up roller 1 is picked up the paper that is contained on the sheet feed stacker by driven wheel 2 edges, and supplies with printing machine.
Driven wheel 2 has to short-range one first column part 2a of an end of paper pick-up shaft 3 extension.Similarly be arranged among the first column part 2a with conventional automatic paper feeding device with the spring clutch 4 that paper pick-up roller 1 reverse directions is twined.Spring clutch 4 is fixed to the groove 7a of hub 7, and its an end 4a is fixed to driven wheel 2, and the other end 4b is fixed to an end of paper pick-up shaft 3.
Simultaneously, as to the routine techniques explanation, the pin 13 hole 12a by ratchet 12 rotatably are inserted in the hole 15 that forms in feedboard for paper, and at the same time, a near bluff piece 14 that is provided with the hole 12a that pin 13 passes is inserted in the scallop hole 16 that forms in feedboard for paper.Therefore, when ratchet 12 is center rotation with pin 13, bluff piece 14 can be along scallop hole 16 rotations.When ratchet 12 is installed on the feedboard for paper, the pawl 14a that is formed on bluff piece 14 ends is stuck on the hole 16, makes ratchet 12 not separate from feedboard for paper.
In the mechanism that removes the rotation restriction, be formed on the draw back predetermined angular settings of about 3 degree of 1 direction of rotation forward of projection 8 on the hub 7 from otch 6 along paper pick-up roller, and the position that forms is than the height height of otch 5, so that ratchet 12 can be released, thereby can remove engaging of ratchet 12 and otch 6.
Therefore, shown in Fig. 6 A-6C, when paper pick-up roller 1 by driven wheel 2 along forwards to driving, the otch 6 of ratchet 12 engages ratchet 5, the rotation of paper pick-up roller 1 is restricted as shown in Figure 6A, then as shown in Figure 2, the motor counter-rotating makes paper registration by the paper feed roller counter-rotating.The structure that prevents paper pick-up roller 1 counter-rotating is illustrated in the above, in this omission.
If motor counter-rotating is at the fixed time finished the step of paper registration, as shown in Figure 6A, under the otch 6 that is installed in the ratchet 5 on the paper pick-up shaft 3 and the state that ratchet 12 engages, shown in Fig. 6 B, by motor forwards to driving, paper pick-up roller 1 is along forwards to rotation.At this moment, because the otch of ratchet 56 engagement pawl 12, the hub 7 that is installed on the paper pick-up shaft 3 rotates with paper pick-up shaft 3, and at this moment, power is applied on the spring clutch 4 along the lax direction of turn.
When hub 7 rotations one predetermined angular, promptly, according to the about 3 degree angles of paper pick-up shaft 3 rotations, the projection 8 contact ratchets 12 that on the periphery of hub 7, form, ratchet 12 since contact projection 8 be pushed out, make ratchet 12 from release otch 5 engages, thereby, ratchet 5 together rotates with paper pick-up shaft 3, promptly together rotates with paper pick-up roller 1.
At this moment, be applied on the spring clutch 4 along the lax direction power of turn according to hub 7 rotations.But because the loose amount of turn is very little, spring clutch 4 is indeformable, and the driving force of driven wheel 2 can continue to be delivered to paper pick-up roller 1.
And, in printing machine automatic paper feeding device of the present invention, as conventional technology, a thrust piece 17 can be installed on the driven wheel 2, every end at it is provided with protruding 17a and 17b, when driven wheel 2 counter-rotating, protruding 17a and 17b with ratchet 12 from position that the otch 5 of ratchet 7 engages release.
Before described thrust piece 17 in detail, will not repeat at this.Equally, because thrust piece 17 is set to driven wheel 2, the distortion of spring clutch 4 also can prevent.
In addition, shown in Fig. 7 and 8, if wish, printing machine automatic paper feeding device of the present invention also can have the device that stops paper pick-up roller 1 counter-rotating, prevents paper pick-up roller 1 rotation when reversing with convenient driven wheel 2.
See Fig. 7 and 8, prevent that the device of paper pick-up roller 1 counter-rotating can be described as follows.In the device that prevents paper pick-up roller 1 counter-rotating, a ratchet member 18 is located on the other end of paper pick-up shaft 3, in paper pick-up roller 1 leaves the angular range of sheet feed stacker a cam 23 is set.In ratchet member 18, it is the semicircle at center that external diameter forms with paper pick-up shaft 3, forms several sawtooth 20a on cylindrical.
Ratchet member 18 stops paper pick-up roller 1 counter-rotating with locking lever 20 cooperations, locking lever 20 is rotatably installed on the feedboard for paper 21, locking lever 20 has and the identical internal diameter of ratchet 18 external diameters, and interior round belt has several sawtooth 18a, and sawtooth 18a engages with sawtooth 20a on being formed on ratchet member 18.
Making that sawtooth 18a and 20a form prevents paper pick-up roller 1 counter-rotating when they are engaged with each other, and when ratchet member 18 was rotated contact locking lever 20, they engaged easily.Because spring 23 compresses locking lever 20 to ratchet member 18, because the rotation of paper pick-up shaft 3, during near locking lever 20, sawtooth 18a and 20a can easily reliably be engaged with each other in ratchet member 18.
As shown in Figure 8, motor is along reverse drive under sawtooth 18a and 20a are engaged with each other state, even the converse rotating force of motor passes to paper pick-up roller 1, the mechanism that the counter-rotating of paper pick-up roller 1 is prevented from reversing stops reliably.
As mentioned above, according to automatic paper feeding device of the present invention, finished the step of alignment paper in the motor counter-rotating after, in the state of engaged pawl otch, because the revolving force of the paper pick-up shaft that the counter-rotating of paper pick-up shaft produces, stoped reliably to be delivered to spring clutch, the paper supply obstacle that the distortion of the spring clutch that is caused by the rotation of paper pick-up shaft causes can be prevented from.
And even when motor reverses, the converse rotating force of motor passes to paper pick-up shaft, because the mechanism of above-mentioned prevention paper pick-up roller counter-rotating stops the counter-rotating of paper pick-up roller reliably, can prevent the paper supply obstacle that the paper pick-up roller counter-rotating causes.
Should be understood that and do not depart from spirit of the present invention, can carry out various modifications automatic paper feeding device of the present invention.The present invention intends being included in all modifications and the scheme in claim and its equivalents.
Claims (14)
1. automatic paper feeding device, described device comprises:
One paper pick-up roller rotates forward by driven wheel, picks up the paper that is contained on the sheet feed stacker;
One restriction and decontrol the mechanism of rotation, by the restriction paper pick-up roller forwards to rotation, determine time of driven wheel counter-rotating; With
One sheet feed stacker driver moves back and forth sheet feed stacker and matches with the operation of paper pick-up roller.
2. device according to claim 1, the mechanism that wherein limits and decontrol described paper pick-up roller comprises:
A revolving part is installed to such an extent that together rotate with paper pick-up roller;
A retainer engages with otch on being formed on revolving part, when driven wheel reverses, and the rotation of restriction revolving part; With
A thrust piece is arranged on the excircle of revolving part, is used for retainer is released the position of decontroling joint.
3. device according to claim 2, wherein thrust piece has a projection, and this projection is in the position of drawing back about 3 degree from otch.
4. device according to claim 1, wherein a bridgeware is installed on the described driven wheel, and each end of bridgeware has a projection, when driven wheel reverses, with the position turn-off of described retainer from engaging with the otch of revolving part.
5. device according to claim 1 is characterized in that, also comprises a device, stops paper pick-up roller counter-rotating when driven wheel reverses.
6. device according to claim 5, the device of wherein said prevention counter-rotating comprises:
A tooth spare is positioned on the paper pick-up shaft that has a cam that compresses sheet feed stacker, and has a plurality of sawtooth;
A locking lever has a plurality of sawtooth, and when locking lever engaged with tooth spare, described sawtooth engaged with sawtooth on the tooth spare, stops the paper pick-up roller counter-rotating; And
A spring compresses locking lever to tooth spare.
7. device according to claim 6 is characterized in that, described tooth spare is positioned at the angular range that paper pick-up roller and paper feed roller are separated.
8. automatic paper feeding device, described device comprises:
One paper pick-up roller rotates forward by driven wheel, picks up the paper that is contained on the sheet feed stacker;
One stops the device of paper pick-up roller counter-rotating when driven wheel reverses; With
One sheet feed stacker driver moves back and forth sheet feed stacker and matches with the operation of paper pick-up roller.
9. device according to claim 8 is characterized in that, the device of described prevention counter-rotating comprises:
A tooth spare is positioned on the paper pick-up shaft that has a cam that compresses sheet feed stacker, and has a plurality of sawtooth;
A locking lever has a plurality of sawtooth, and when locking lever engaged with tooth spare, described sawtooth engaged with sawtooth on the tooth spare, stops the paper pick-up roller counter-rotating; And
A spring compresses locking lever to tooth spare.
10. device according to claim 9 is characterized in that, described tooth spare is positioned at the angular range that paper pick-up roller and paper feed roller are separated.
11. device according to claim 8 is characterized in that, also comprise a restriction and decontrol the mechanism of rotation, by the restriction paper pick-up roller forwards to rotation, determine time of driven wheel counter-rotating.
12. device according to claim 8 is characterized in that, the mechanism that wherein limits and decontrol described paper pick-up roller comprises:
A revolving part is installed to such an extent that together rotate with paper pick-up roller;
A retainer engages with otch on being formed on revolving part, when driven wheel reverses, and the rotation of restriction revolving part; With
A thrust piece is arranged on the excircle of revolving part, is used for retainer is released the position of decontroling joint.
13. device according to claim 12, wherein thrust piece has a projection, and this projection is in the position of drawing back about 3 degree from otch.
14. device according to claim 12, wherein a bridgeware is installed on the described driven wheel, and each end of bridgeware has a projection, when driven wheel reverses, with the position turn-off of described retainer from engaging with the otch of revolving part.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR66683/97 | 1997-12-08 | ||
| KR1019970066683A KR100242849B1 (en) | 1997-12-08 | 1997-12-08 | The feeding mechanism of inkjet printer |
| KR66683/1997 | 1997-12-08 | ||
| KR40881/1997 | 1997-12-26 | ||
| KR40881/97 | 1997-12-26 | ||
| KR2019970040881U KR200162391Y1 (en) | 1997-12-26 | 1997-12-26 | The device preventing reverse rotation of pick-up roller for inkjet printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1220946A true CN1220946A (en) | 1999-06-30 |
| CN1165471C CN1165471C (en) | 2004-09-08 |
Family
ID=26633025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981231411A Expired - Fee Related CN1165471C (en) | 1997-12-08 | 1998-12-08 | Automatic sheet feeding device of printer |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0921082B1 (en) |
| JP (1) | JP3083509B2 (en) |
| CN (1) | CN1165471C (en) |
| DE (1) | DE69806220T2 (en) |
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| CN101114138B (en) * | 2006-07-27 | 2010-04-07 | 株式会社东芝 | Sheet feeder, image forming apparatus and sheet feeder control method |
| CN103121597A (en) * | 2011-11-18 | 2013-05-29 | 致伸科技股份有限公司 | Automatic paper advance device |
| CN103253004A (en) * | 2012-02-15 | 2013-08-21 | 致伸科技股份有限公司 | Thermal transfer printing device |
| CN103660618A (en) * | 2013-11-21 | 2014-03-26 | 浙江大学 | Convenience paper extractor |
| CN104044373A (en) * | 2014-06-20 | 2014-09-17 | 张晓玲 | Printer with automatic alarming function |
| CN104339896A (en) * | 2014-10-13 | 2015-02-11 | 徐广宇 | One-way driving mechanism for stepless stroke regulation |
| CN108175183A (en) * | 2018-01-30 | 2018-06-19 | 张运 | Paper apparatus for fast switching |
| CN109661313A (en) * | 2016-09-07 | 2019-04-19 | 惠普发展公司，有限责任合伙企业 | It is increased using the pick-up arm of one-way clutch and torque limiter |
| CN109715537A (en) * | 2016-07-05 | 2019-05-03 | 惠普打印机韩国有限公司 | Sheet supply apparatus, paper processing apparatus and imaging device using the sheet supply apparatus |
| CN109809218A (en) * | 2019-03-30 | 2019-05-28 | 浙江欧利特科技股份有限公司 | A kind of paper feeding transmission mechanism of printing machine |
| CN111252587A (en) * | 2018-11-30 | 2020-06-09 | 东友科技股份有限公司 | Separation claw and applicable clutch structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3635003B2 (en) * | 2000-05-17 | 2005-03-30 | 理想科学工業株式会社 | Paper feeding device and printing device using the same |
| KR100464091B1 (en) * | 2002-12-18 | 2005-01-03 | 삼성전자주식회사 | clutch apparatus |
| CN104014872B (en) * | 2014-05-19 | 2016-08-24 | 潍坊翰顿数控设备有限公司 | Character enclosing machine |
| US10301136B2 (en) | 2016-01-08 | 2019-05-28 | Hewlett-Packard Development Company, L.P. | Roller locks |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61226424A (en) * | 1985-03-29 | 1986-10-08 | Canon Inc | Sheet feeder |
| JP2607956B2 (en) * | 1989-06-08 | 1997-05-07 | キヤノン株式会社 | Driving force transmission mechanism |
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1998
- 1998-12-08 EP EP19980310035 patent/EP0921082B1/en not_active Expired - Lifetime
- 1998-12-08 DE DE1998606220 patent/DE69806220T2/en not_active Expired - Fee Related
- 1998-12-08 JP JP34917698A patent/JP3083509B2/en not_active Expired - Fee Related
- 1998-12-08 CN CNB981231411A patent/CN1165471C/en not_active Expired - Fee Related
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| CN108175183A (en) * | 2018-01-30 | 2018-06-19 | 张运 | Paper apparatus for fast switching |
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| CN111252587A (en) * | 2018-11-30 | 2020-06-09 | 东友科技股份有限公司 | Separation claw and applicable clutch structure thereof |
| CN111252587B (en) * | 2018-11-30 | 2021-07-09 | 东友科技股份有限公司 | Separation claw and applicable clutch structure thereof |
| CN109809218A (en) * | 2019-03-30 | 2019-05-28 | 浙江欧利特科技股份有限公司 | A kind of paper feeding transmission mechanism of printing machine |
| CN109809218B (en) * | 2019-03-30 | 2023-09-01 | 国望科技(浙江)有限公司 | Paper feeding transmission mechanism of printing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1165471C (en) | 2004-09-08 |
| JP3083509B2 (en) | 2000-09-04 |
| DE69806220T2 (en) | 2003-03-06 |
| EP0921082B1 (en) | 2002-06-26 |
| JPH11236133A (en) | 1999-08-31 |
| EP0921082A1 (en) | 1999-06-09 |
| DE69806220D1 (en) | 2002-08-01 |
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