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US5171006A Expired / Lapsed US ⏱️ 0.0 years remaining

Sheet material feeding device

Assignee: Canon Inc
•
Filing: 1992-04-28
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Granted: 1992-12-15
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Expires: 2012-04-28
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Abstract

Abstract A sheet material feeding device includes a first conveying path for feeding sheet material, a second conveying path for feeding the sheet material and which joins the first conveying path, an anchoring unit for anchoring and bending the leading end of the sheet material fed through the first conveying path or the second conveying path, and a guide member provided at the joining point of the first conveying path and the second conveying path for allowing the sheet material fed from an upstream side through the first conveying path to pass the joining point and for preventing the sheet material fed from a downstream side through the first conveying path from entering an upstream side from the joining point. The guide member presses a curved portion of the sheet material formed by the leading end of the sheet material fed through the first conveying path anchored by the anchoring unit in a direction to flatten that portion.

Inventors

  • 👤 Hisatsugu Naito

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 05:12
CPC Classifications
B; B41; B41J; B41J13/00; B41J13/009; B41J13/10; Y; Y10; Y10S; Y10S271/00; Y10S271/902

Claims Analysis

Total Claims: 23
Claim 1
Independent Claim 147 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; stop means for stopping the leading end of the sheet material fed through said first conveying path and bending the sheet material; and a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to pass said joining point, and for preventing the sheet material fed from a downstream side through said first conveying path from entering an upstream side of said joining point; said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said stop means in a direction to flatten said portion.
Claim 2
Dependent Claim 147 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; stop means for stopping the leading end of the sheet material fed through said first conveying path and bending the sheet material; and a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to pass said joining point, and for preventing the sheet material fed from a downstream side through said first conveying path from entering an upstream side of said joining point; said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said stop means in a direction to flatten said portion.
Claim 3
Dependent Claim 23 words
A sheet material feeding device according to claim 1, further including feeding means for feeding the sheet material through the first conveying path.
Claim 4
Dependent Claim 32 words
A sheet material feeding device according to claim 2, further including mounting means for mounting the sheet material, and wherein said feeding means feeds the sheet material mounted on said mounting means.
Claim 5
Dependent Claim 23 words
A sheet material feeding device according to claim 1, wherein said stop means includes a pair of rotating members rotatably contacting each other.
Claim 6
Dependent Claim 18 words
A sheet material feeding device according to claim 1, wherein said guide member is mounted for pivoted movement.
Claim 7
Dependent Claim 34 words
A sheet material feeding device according to claim 5, wherein said guide member is situated at a position to close said joining point in said first conveying path by the guide member's own weight.
Claim 8
Dependent Claim 40 words
A sheet material feeding device according to claim 6, wherein said guide member is pivoted by the sheet material fed through the first conveying path to allow the sheet material to pass said joining point in the first conveying path.
Claim 9
Dependent Claim 33 words
A sheet material feeding device according to claim 7, wherein said guide member presses the curved portion of the sheet material in a direction to flatten it by the guide member's own weight.
Claim 10
Dependent Claim 59 words
A sheet material feeding device according to claim 1, further including conveying means situated farther downstream than said joining point in said first conveying path, for conveying the sheet material fed through the first conveying path to a downstream side until the sheet material passes said joining point, and for subsequently conveying the sheet material to an upstream side.
Claim 11
Dependent Claim 36 words
A sheet material feeding device according to claim 9, wherein said guide member guides the sheet material conveyed through said first conveying path toward an upstream side by said conveying means to said second conveying path.
Claim 12
Dependent Claim 183 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; mounting means for mounting the sheet material; feeding means for feeding the sheet material mounted on said mounting means to said first conveying path; a pair of rotating members for grasping and conveying the sheet material fed through said first conveying path; and a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to enter a downstream side of said joining point, and for preventing the sheet material conveyed from a downstream side toward an upstream side through said first conveying path by said pair of rotating members from entering an upstream side of said joining point; said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said pair of rotating members in a direction to flatten said portion.
Claim 13
Dependent Claim 183 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; mounting means for mounting the sheet material; feeding means for feeding the sheet material mounted on said mounting means to said first conveying path; a pair of rotating members for grasping and conveying the sheet material fed through said first conveying path; and a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to enter a downstream side of said joining point, and for preventing the sheet material conveyed from a downstream side toward an upstream side through said first conveying path by said pair of rotating members from entering an upstream side of said joining point; said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said pair of rotating members in a direction to flatten said portion.
Claim 14
Dependent Claim 18 words
A sheet material feeding device according to claim 11, wherein said guide member is mounted for pivoted movement.
Claim 15
Dependent Claim 34 words
A sheet material feeding device according to claim 12, wherein said guide member is situated at a position to close said joining point in said first conveying path by the guide member's own weight.
Claim 16
Dependent Claim 41 words
A sheet material feeding device according to claim 13, wherein said guide member is pivoted by the sheet material fed through the first conveying path to allow the sheet material to pass through said joining point in the first conveying path.
Claim 17
Dependent Claim 33 words
A sheet material feeding device according to claim 14, wherein said guide member presses the curved portion of the sheet material in a direction to flatten it by the guide member's own weight.
Claim 18
Dependent Claim 22 words
A sheet material feeding device according to claim 12, further including detection means for detecting a pivoted movement of said guide member.
Claim 19
Dependent Claim 258 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; mounting means for mounting the sheet material; feeding means for feeding the sheet material mounted on said mounting means to said first conveying path; a pair of rotating members for grasping and conveying the sheet material fed through said first conveying path; a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to enter a downstream side of said joining point, and for preventing the sheet material conveyed from a downstream side toward an upstream side through said first conveying path by said pair of rotating members from entering an upstream side of said joining point; control means for controlling said pair of rotating members so that said pair of rotating members are held in an inactive state to stop the front end of the sheet material fed through said first conveying path, and to bend the sheet material and then rotated to convey the sheet material until the trailing end of the sheet material passes said joining point, and are subseqently rotated in the reverse direction by a predetermined amount; and said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said pair of rotating members in a direction to flatten said portion.
Claim 20
Dependent Claim 258 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; mounting means for mounting the sheet material; feeding means for feeding the sheet material mounted on said mounting means to said first conveying path; a pair of rotating members for grasping and conveying the sheet material fed through said first conveying path; a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to enter a downstream side of said joining point, and for preventing the sheet material conveyed from a downstream side toward an upstream side through said first conveying path by said pair of rotating members from entering an upstream side of said joining point; control means for controlling said pair of rotating members so that said pair of rotating members are held in an inactive state to stop the front end of the sheet material fed through said first conveying path, and to bend the sheet material and then rotated to convey the sheet material until the trailing end of the sheet material passes said joining point, and are subseqently rotated in the reverse direction by a predetermined amount; and said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said pair of rotating members in a direction to flatten said portion.
Claim 21
Dependent Claim 200 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; mounting means for mounting the sheet material; feeding means for feeding the sheet material mounted on said mounting means to said first conveying path; a pair of rotating members for grasping and conveying the sheet material fed through said first conveying path; recording means for recording an image on the sheet material conveyed by said pair of rotating members; a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to enter a downstream side of said joining point, and for preventing the sheet material conveyed from a downstream side toward an upstream side through said first conveying path by said pair of rotating members from entering an upstream side of said joining point; and said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said pair of rotating members in a direction to flatten said portion.
Claim 22
Dependent Claim 200 words
A sheet material feeding device comprising: a first conveying path for guiding a sheet material; a second conveying path for guiding the sheet material and which joins said first conveying path; mounting means for mounting the sheet material; feeding means for feeding the sheet material mounted on said mounting means to said first conveying path; a pair of rotating members for grasping and conveying the sheet material fed through said first conveying path; recording means for recording an image on the sheet material conveyed by said pair of rotating members; a guide member provided at the joining point of said first conveying path and said second conveying path, for allowing the sheet material fed from an upstream side through said first conveying path to enter a downstream side of said joining point, and for preventing the sheet material conveyed from a downstream side toward an upstream side through said first conveying path by said pair of rotating members from entering an upstream side of said joining point; and said guide member pressing a curved portion of the sheet material fed through said first conveying path and stopped by said pair of rotating members in a direction to flatten said portion.
Claim 23
Dependent Claim 25 words
A sheet material feeding device according to claim 18, wherein said recording means records the image by liquid drops of ink generated by thermal energy.

References Cited (Backward Citations)

US3963339A Cited
US4025187A Cited
US4223886A Cited
US4565462A Cited
JPS60204566A Cited
JPS61148081A Cited
US4913416A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-12-15 1996-06-15 1996-12-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-12-15 2000-06-15 2000-12-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-12-15 2004-06-15 2004-12-15 $7700.00 Window Closed / Lapsed

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