Patent US5074537A successfully refreshed from Google Patents.
US5074537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recirculating document feeder for copying both simplex and duplex documents
Assignee: Canon Production Printing Netherlands BV
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Filing: 1990-07-18
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Granted: 1991-12-24
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Expires: 2010-07-18
Abstract
Abstract An apparatus for feeding originals from a stack thereof provided in a cassette to an exposure platen within an exposure zone of a copying machine and returning the originals from the exposure zone to the stack, either via a discharge path extending from a feed side of the exposure platen to the stack for returning simplex originals without reversal, via discharge path extending from the discharge side of the exposure platen to the stack for directly returning duplex originals to the stack with reversal, or via a reversing path which combines both of these two discharge paths for returning duplex originals to the exposure platen with reversal and then to the stack. The reversing path includes a reversible conveyor member disposed at a common portion of the two discharge paths just before the stack of originals in the copy machine cassette.
Inventors
- 👤 Gerardus L. J. van Rijn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:24
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/60; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; G03B27/6257; G03G15/22; G03G15/23; G03G2215/00; G03G2215/00172; G03G2215/00177; G03G2215/00181; G03G2215/00185; Y; Y10; Y10S; Y10S271/00; Y10S271/902
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
330 words
The apparatus for recirculating originals from a stack thereof to and from an exposure zone of a copying machine capable of simplex and duplex copying, comprising in combination: a cassette for stacking originals; a feed path extending from a bottom of said cassette to a first side of an exposure platen for feeding an original from said bottom of said cassette to said exposure platen without reversal of said original, a reversible sheet conveying means for conveying said original in a first conveyor path above said exposure platen to either discharge said original from a second side of said exposure platen or discharge said original by way of a second conveyor path from said first side of said exposure platen, a discharge path extending from said second side of said exposure platen to said top of said cassette for discharging said original from said exposure platen to said top of said cassette, with reversal of said original, said second conveyor path extending from said first side of said exposure platen to coincide with a terminal portion of said discharge path near said top of said cassette, for returning said original without reversal to said top of said cassette, and a reversible sheet conveyor member positioned in said discharge path, juxtapositioned to where said second conveyor path coincides with said terminal portion of said discharge path at said top of said cassette, said second conveyor path together with said reversible sheet conveyor member functioning to convey said original to said exposure platen after the original has been reversed in the case when said original is discharged from said second side of said exposure platen or to convey said original to said exposure platen without reversal of said original in the case when said original is discharged from said first side of said exposure platen and, in turn, to convey said respective original from said first side of said exposure platen to said top of said cassette without reversal of said original.
Claim 2
Independent Claim
330 words
The apparatus for recirculating originals from a stack thereof to and from an exposure zone of a copying machine capable of simplex and duplex copying, comprising in combination: a cassette for stacking originals; a feed path extending from a bottom of said cassette to a first side of an exposure platen for feeding an original from said bottom of said cassette to said exposure platen without reversal of said original, a reversible sheet conveying means for conveying said original in a first conveyor path above said exposure platen to either discharge said original from a second side of said exposure platen or discharge said original by way of a second conveyor path from said first side of said exposure platen, a discharge path extending from said second side of said exposure platen to said top of said cassette for discharging said original from said exposure platen to said top of said cassette, with reversal of said original, said second conveyor path extending from said first side of said exposure platen to coincide with a terminal portion of said discharge path near said top of said cassette, for returning said original without reversal to said top of said cassette, and a reversible sheet conveyor member positioned in said discharge path, juxtapositioned to where said second conveyor path coincides with said terminal portion of said discharge path at said top of said cassette, said second conveyor path together with said reversible sheet conveyor member functioning to convey said original to said exposure platen after the original has been reversed in the case when said original is discharged from said second side of said exposure platen or to convey said original to said exposure platen without reversal of said original in the case when said original is discharged from said first side of said exposure platen and, in turn, to convey said respective original from said first side of said exposure platen to said top of said cassette without reversal of said original.
Claim 3
Dependent Claim
63 words
The apparatus according to claim 1, wherein said second conveyor path is in a common plane with said first conveyor path and said terminal portion of said discharge path, and said second conveyor path forms an acute angle with said feed path and with said discharge path prior to where said terminal portion of said discharge path coincides with said second conveyor path.
Claim 4
Dependent Claim
18 words
The apparatus of claim 2, wherein said common plane is situated immediately above said reversible sheet conveyor member.
Claim 5
Dependent Claim
14 words
The apparatus of claim 1, wherein said reversible conveying means comprises an endless belt.
Claim 6
Dependent Claim
14 words
The apparatus of claim 1, wherein said reversible sheet conveyor member comprises a roller.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |