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US 5,277,415 AGranted
Sheet feeding device
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsNaohisa Kinoshita, Mitsuyoshi Uehara, Eiji Tanaka
Life of this patent
Estimating the term…
Abstract
A sheet feeding device used for an image forming device which has a print part, such as the laser printer. A control part drives a separation roller installed under the print part and the paper supplying roller and supplies the printing paper to a resist roller individually. When a predetermined time passes afterwards, the control part drives the resist roller and transports the printing paper to the print part. In this case, a curve part enables miniaturization of the entire device as a result of being installed in a vertical part of the sheet guide.
Claims20
A sheet feeding device provided in an image recording apparatus having print means which is capable of printing an image on a sheet, comprising:
- sheet supplying means for supplying a sheet, said sheet supplying means being provided substantially beneath said print means;
- feeding means for feeding the sheet supplied from said sheet supplying means to said print means;
- guide means for cooperating with said sheet supplying means and for guiding the sheet to said feeding means;
- buffer means for storing a part of the sheet, said part of the sheet being a bent sheet part, said buffer means being provided in a portion of said guide means that is substantially perpendicular to a horizontal plane, said buffer means comprising a space formed by said guide means, said space having a narrow entrance portion and a middle portion according to a feeding direction of the sheet, said middle portion being wider than said entrance portion in the horizontal direction, said sheet supplying means feeding said sheet from a substantially horizontal position to said entrance portion of said buffer means, said sheet entering said entrance portion at a substantially vertical orientation, said narrow entrance portion being positioned adjacent said sheet supply means and so configured as to prevent bending of the sheet near the sheet supply means;
- and
- control means for driving said feeding means when a predetermined time has passed following driving of said sheet supplying means and for bumping the sheet against said feeding means.
3 more elements
An image recording apparatus, comprising:
- storing means for storing accumulated sheets;
- sheet supplying means for supplying a sheet from said storing means;
- print means for printing an image on the sheet, said print means being provided substantially above said storing means;
- feeding means for feeding the sheet supplied from said sheet supplying means to said print means;
- guide means for cooperating with said sheet supplying means and guiding the sheet to said feeding means;
- buffer means for storing a part of the sheet, said part of the sheet being a bent sheet part, said buffer means being provided in a portion of said guide means that is substantially perpendicular to a horizontal plane, said buffer means comprising a space formed by said guide means, said space having a narrow entrance portion and a middle portion according to a feeding direction of the sheet, said middle portion being wider than said entrance portion in the horizontal direction, said sheet supplying means feeding said sheet from a substantially horizontal position to said entrance portion of said buffer means, said sheet entering said entrance portion at a substantially vertical orientation said narrow entrance portion being positioned adjacent said sheet supply means and so configured as to prevent bending of the sheet near the sheet supply means;
- and
- control means for driving said feeding means when a predetermined time has passed following driving of said sheet supplying means and for bumping the sheet against said feeding means.
5 more elements
A sheet feeding device provided in an image recording apparatus having print means which is capable of printing an image on a sheet, comprising:
- sheet supplying means for supplying a sheet, said sheet supplying means being provided substantially beneath said print means;
- feeding means for feeding the sheet supplied from said sheet supplying means to said print means;
- guide means for cooperating with said sheet supplying means and for guiding the sheet to said feeding means;
- buffer means for storing a part of the sheet, said part of the sheet being a bent sheet part, said buffer means being provided in a portion of said guide means that is substantially perpendicular to a horizontal plane, said buffer means comprising a space formed by said guide means, said space having a narrow entrance portion and a middle portion according to a feeding direction of the sheet, said middle portion being wider than said entrance portion in the horizontal direction, said sheet supplying means feeding said sheet from a substantially horizontal position to said entrance portion of said buffer means, said sheet entering said entrance portion at a substantially vertical orientation, wherein said narrow entrance portion of said guide means being formed in part by a projection portion of said guide means and said guide means at said narrow entrance portion said projection having a convex shape and extending into said guide means said entrance portion and said middle portion of said buffer means;
- and
- control means for driving said feeding means when a predetermined time has passed following driving of said sheet supplying means and for bumping the sheet against said feeding means.
3 more elements
Dependencies are inferred from the claim text.