Source: http://www.google.com/patents/US5226639?ie=ISO-8859-1
Timestamp: 2014-03-13 15:56:08
Document Index: 753628970

Matched Legal Cases: ['art 21', 'art 13', 'art 22', 'art 16', 'art 22', 'art 22', 'art 16']

Patent US5226639 - Paper feeding device for facsimile apparatus - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe paper feeding device comprises a drive source having a shaft rotatable in forward or reverse direction and a drive gear mounted fixedly to the shaft, a sun gear engaging with the drive gear and being rotatable around a supporting point, first and second planetary arms mounted rotatably to the supporting...http://www.google.com/patents/US5226639?utm_source=gb-gplus-sharePatent US5226639 - Paper feeding device for facsimile apparatusAdvanced Patent SearchPublication numberUS5226639 APublication typeGrantApplication numberUS 07/859,586Publication dateJul 13, 1993Filing dateMar 27, 1992Priority dateMar 29, 1991Fee statusPaidAlso published asDE69208909D1, DE69208909T2, EP0505969A2, EP0505969A3, EP0505969B1Publication number07859586, 859586, US 5226639 A, US 5226639A, US-A-5226639, US5226639 A, US5226639AInventorsMotohiko Hayashi, Ryoichi Kawai, Shigeru KidaOriginal AssigneeSharp Kabushiki KaishaExport CitationBiBTeX, EndNote, RefManPatent Citations (6), Referenced by (17), Classifications (18), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetPaper feeding device for facsimile apparatusUS 5226639 AAbstract The paper feeding device comprises a drive source having a shaft rotatable in forward or reverse direction and a drive gear mounted fixedly to the shaft, a sun gear engaging with the drive gear and being rotatable around a supporting point, first and second planetary arms mounted rotatably to the supporting point of the sun gear, respectively, first and second planetary gears engaging with the sun gear and attached rotatably to the first and second planetary arms, respectively, and arm lock mechanism for positioning and fixing the first and second planetary arms, respectively. The rotation of the shaft of the drive source is transmitted through the first planetary gear to an original feeding roller in the transmission mode and to a platen roller in the reception mode. The driving force is transmitted to the original feeding roller via the second planetary gear and to the platen roller via the first planetary gear in the copy mode.
What is claimed is: 1. A paper feeding device, used for a facsimile apparatus, for feeding an original by rotating an original feeding roller and for feeding a recording paper by rotating a platen roller, said paper feeding device comprises:a drive source having a shaft rotatable in forward or reverse direction and a drive gear mounted fixedly to the shaft; a sun gear disposed rotatably around a supporting point and engaging with said drive gear; first and second planetary arms mounted rotatably to the supporting point of said sun gear, respectively; first and second planetary gears attached rotatably to said first and second planetary arms and engaging with said sun gear respectively; and arm lock means for positioning and fixing said first and second planetary arms, respectively, said drive gear, said sun gear, and at least one of said first and second planetary gears being adapted such that a rotation of said shaft of said drive source is transmitted to at least one of said original feeding roller and said platen roller when feeding at least one of an original and a recording paper. 2. A paper feeding device according to claim 1, wherein said arm lock means includes a first lock pawl attached rotatably around another supporting point and engaging with said first planetary arm, a second lock pawl attached rotatably around the other supporting point and engaging with said second planetary arm, a first spring connected to one side end of said first lock pawl at one end thereof, a second spring connected to one side end of said second pawl at one end thereof, and means for turning said second pawl around the other supporting point, said first pawl being urged to turn by said first spring and said second pawl being urged to turn by said second spring, said second pawl having a limiter for limiting the turn of said first pawl.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a paper feeding device, used for a facsimile apparatus, for feeding an original and a recording paper at the time of transmission, reception and copying with a single motor without one-way clutches.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic construction diagram showing a conventional paper feeding device;
DESCRIPTION OF THE EMBODIMENTS Referring to FIGS. 3 to 9, an embodiment of the present invention will be described in the following. FIGS. 4 to 9 are schematic construction diagrams showing a paper feeding device of a facsimile apparatus. For convenience of description, the clockwise direction in those figures is designated as the forward direction and the counter-clockwise direction as the reverse direction in the following description.
The first lock pawl 21 is supported in the device so as to be rotatable about a supporting point D. The other end of a first spring 23 fixed at one end thereof in the device is connected to one end of the first lock pawl 21, so that the first lock pawl 21 is urged to turn toward E.sub.1 about the supporting point D. The first lock pawl 21 includes at the other end thereof an engaging pawl part 21a which engages with the engaging part 13a of the first planetary arm 13.
Like the first lock pawl 21, the second lock pawl 22 is supported in the device so as to be rotatable about the supporting point D. The other end of the second spring 24 fixed at one end thereof in the device is connected to one end of the second lock pawl 22, so that the second lock pawl 22 is urged to turn toward E.sub.1 about the supporting point D. The second lock pawl 22 includes at the other end thereof an engaging part 22a which engages with the engaging part 16 of the second planetary arm in the similar manner as described above.
For the second lock pawl 22, there is provided a rotation limiting member 22b for limiting the rotation of the second lock pawl 22 toward E.sub.1 of the first lock pawl 21. The second lock pawl 22 is also provided with a connecting part 22c for connecting with the solenoid 25.
The solenoid 25 has a movable shaft 25a which moves in the direction of F.sub.1 and F.sub.2. The end portion of the movable shaft 25a is coupled to the connecting part 22c of the second lock pawl 22. So, when the movable shaft 25a advances toward F.sub.1, the second lock pawl 22 is turned in the direction of E.sub.1, and when the movable shaft 25a retracts toward F.sub.2, the second lock pawl 22 is turned in the direction of E.sub.2. As for the advance-retract motion of the movable shaft 25a, when a current is supplied to the solenoid 25, the movable shaft 25a retracts toward F.sub.2. Therefore, when the current supplied to the solenoid 25 is stopped, the movable shaft 25a is made to advance toward F.sub.1 by an elastic force of the second spring 24 through the intermediary of the second lock pawl 22. For convenience of description, a state in which the movable shaft 25a has been moved toward F.sub.1 and is forced toward F.sub.1 by the spring 24 is designated as OFF state of the solenoid 25, and a state in which the movable shaft 25a has been moved toward F.sub.2 is designated as ON state of the solenoid 25.
In the copy mode, from the operating condition of the paper feeding device 10 in the transmission mode mentioned above, the solenoid 25 is energized and in the ON state, and the movable shaft 25a of the solenoid 25 retracts in the direction of F.sub.2 as shown in FIG. 7. Therefore, the first lock pawl 21 and the second lock pawl 22 are turned in the direction of E.sub.2, so that the second planetary arm 16 and the second lock pawl 22 are disengaged. Under this condition, the rotating shaft of the motor 11 is rotated in reverse direction to cause the sun gear 12 to rotate in forward direction about the supporting point A. Simultaneously, the first planetary arm 13 is rotated in forward direction about the supporting point A, and the first planetary gear 14 is rotated in reverse direction about the supporting point B, so that the reverse rotation of the rotating shaft of the motor 11 is transmitted to the platen roller. At the same time, the second planetary arm 16 is rotated in forward direction about the supporting point A, and the second planetary gear 17 is rotated in reverse direction about the supporting point B, so that the reverse rotation of the rotating shaft of the motor 11 is transmitted to the original feeding roller 5. By the above-mentioned rotation of the platen roller 7, a recording paper 40 put between the platen roller 7 and the recording head 8 is transferred in the direction of H.sub.1, and by the rotation of the original feeding roller 5, the original 30 put between the original feeding roller 5 and the reading unit 6 is conveyed in the direction of G.
In the reception mode, from the operating condition of the paper feeding device 10 in the transmission mode described above, the rotating shaft of the motor 11 is rotated in reverse direction, and the sun gear 12 is rotated in forward direction about the supporting point A as shown in FIG. 8. Along with this, the first planetary arm 13 is rotated in forward direction about the supporting point A, and the first planetary gear 14 is rotated in reverse direction about the supporting point B, so that the reverse rotation of the rotating shaft of the motor 11 is transmitted to the platen roller 7. By the rotation of the platen roller 7 mentioned above, a recording paper 40 put between the platen roller 7 and the recording head 8 is fed in the direction of H.sub.1. In the reception mode mentioned above, the second planetary arm 16, by its forward rotation attending the forward rotation of the sun gear 12, has its engaging part 16a engaged by an engaging pawl 22a of the second lock pawl 22, and is positioned and fixed in the forward-rotating direction.
In the reverse rotation mode, from the operating condition of the paper feeding device 10 in the reception mode mentioned above, the rotating shaft of the motor 11 is rotated in forward direction, and the sun gear 12 is rotated in reverse direction about the supporting point A as shown in FIG. 9. In conjunction with this, the first planetary gear 14 is rotated in forward direction about the supporting point B, and the forward rotation of the motor 11 is transmitted to the platen roller 7. The recording paper 40 put between the platen roller 7 and the recording head 8 is conveyed in the direction of H.sub.2.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4691911 *Jul 30, 1986Sep 8, 1987Seiko Epson Kabushiki KaishaPaper feeding apparatus for printersUS4866531 *May 31, 1988Sep 12, 1989Tokyo Electric Co., Ltd.Recording medium feeding apparatusUS5141346 *Jun 24, 1991Aug 25, 1992Brother Kogyo Kabushiki KaishaSheet feeder having automatic cut-sheet feed, continuous-form feed, and manual sheet insertion modesJPS5457818A * Title not availableJPS61184248A * Title not availableJPS63155862A * Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS5523858 *Nov 4, 1993Jun 4, 1996Canon Kabushiki KaishaFacsimile apparatusUS5793399 *Dec 21, 1994Aug 11, 1998Canon Kabushiki KaishaSheet supplying apparatusUS5854696 *Oct 15, 1996Dec 29, 1998Samsung Electronics Co., Ltd.Single motor driving device of a facsimile systemUS6019363 *Jun 24, 1997Feb 1, 2000Samsung Electronics Co., Ltd.Document feeding device of a facsimile systemUS6029970 *May 13, 1998Feb 29, 2000Samsung Electronics Co., Ltd.Automatic paper feeding device in a multifunctional machineUS6178863Jul 21, 1997Jan 30, 2001Brother Kogyo Kabushiki KaishaPaper transfer assembly, and image reading and/or recording apparatus incorporating the sameUS6334042Nov 28, 2000Dec 25, 2001Xerox CorporationSide shifting cleaning apparatus and methodUS6948871 *Feb 4, 2000Sep 27, 2005Rohm Co., Ltd.Image processing deviceUS7123386 *Mar 1, 2002Oct 17, 2006Sharp Kabushiki KaishaImage reading apparatusUS7151622 *Sep 13, 2002Dec 19, 2006Canon Kabushiki KaishaImage reading and recording apparatusUS7227672Feb 28, 2002Jun 5, 2007Brother Kogyo Kabushiki KaishaGear changing device and communication apparatus including the sameUS7451975Mar 18, 2004Nov 18, 2008Lexmark International, Inc.Input tray and drive mechanism using a single motor for an image forming deviceUS7549626Sep 8, 2005Jun 23, 2009Lexmark International, Inc.Media timing based on stack height for use within an image forming deviceUS7708262 *Jan 25, 2005May 4, 2010Hewlett-Packard Development Company, L.P.Media handling systemUS7729020 *Oct 18, 2006Jun 1, 2010Chuwn-Jen ChienTransmission mechanism of image scanner with adjustable resolutionUS8434563Feb 24, 2011May 7, 2013Schiller Grounds Care, Inc.Device for cultivating soil or brushing debrisUS8496069 *Sep 14, 2012Jul 30, 2013Schiller Grounds Care, Inc.Device for cultivating soil or brushing debris having a drive shaft and plurality of gears* Cited by examinerClassifications U.S. Classification271/109, 271/264International ClassificationH04N1/00, B65H5/06, B41J23/02, H04N1/04, H04N1/12, B65H20/38Cooperative ClassificationH04N1/12, H04N1/0464, B41J23/025, H04N1/0057, H04N1/0461, H04N1/00602European ClassificationH04N1/00F2F2, H04N1/00F2, H04N1/04F, B41J23/02BLegal EventsDateCodeEventDescriptionDec 21, 2004FPAYFee paymentYear of fee payment: 12Dec 26, 2000FPAYFee paymentYear of fee payment: 8Dec 30, 1996FPAYFee paymentYear of fee payment: 4May 26, 1992ASAssignmentOwner name: SHARP KABUSHIKI KAISHA, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:KIDA, SHIGERU;HAYASHI, MOTOHIKO;KAWAI, RYOICHI;REEL/FRAME:006135/0611Effective date: 19920511RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google