Patent US584976A successfully refreshed from Google Patents.
Patent US3905697A successfully refreshed from Google Patents.
US3905697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex copying apparatus
Assignee: Canon Inc
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Filing: 1973-10-10
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Granted: 1975-09-16
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Expires: 1993-10-10
Abstract
Abstract A copying apparatus capable of imaging copying both sides of a transfer material copy sheet. The apparatus includes a pair of cassettes commonly usable as a feeding tray and a discharging tray, and a mechanism for detaching said cassettes. A transfer material fed from a cassette loaded in a feeding station is image transferred and fixed while passing through a conventional copy processing route, and said material is reversed onto an intermediate plate in a cassette loaded in the discharging tray station which is identical with the first mentioned cassette. The cassette which encases the image-transferred transfer materials and loaded in the discharging tray station is unloaded therefrom and loaded into the feeding station, and the opposite side of the reversed transfer material is imaged in a manner similar to the above described manner thereby producing a copy sheet having images on both sides thereof.
Inventors
- 👤 Shigehiro Komori
- 👤 Yoshitomo Goshima
- 👤 Hajime Katayama
- 👤 Koichi Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:03
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/22; G03G13/23
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
258 words
A duplex copying machine adapted to produce images of an original on both sides of a copy paper comprising a housing, an original holder, an exposure slit, optical means for exposing a photosensitive member to an original image through said slit, copying processing means for forming said original image on one side of said copy paper, driving means for driving said copying processing means, a first copy paper cassette detachably mounted at a copy paper feeding station and accommodating copy papers to be fed to said copying processing means, said first copy paper cassette being also detachably mountable at a copy paper discharging station, and a second copy paper cassette detachably mounted at said copy paper discharging station for receiving copy paper upside down, relative to the copy paper in said first copy paper cassette, after completion of a first copying process on one side thereof, said second copy paper cassette being also detachably mountable at said copy paper feeding station, wherein each of said first and second copy paper cassettes includes a movable side plate member which is movable to widen the inlet for receiving copy papers when mounted at said copy paper discharging station and which is movable to press the copy papers at a predetermined position when mounted at said copy paper feeding station, whereby after said copy paper is received in said second cassette the positions of said first and second copy paper cassettes are reversed and another copying process is conducted to thereby obtain a copy paper having original images on both sides.
Claim 2
Dependent Claim
258 words
A duplex copying machine adapted to produce images of an original on both sides of a copy paper comprising a housing, an original holder, an exposure slit, optical means for exposing a photosensitive member to an original image through said slit, copying processing means for forming said original image on one side of said copy paper, driving means for driving said copying processing means, a first copy paper cassette detachably mounted at a copy paper feeding station and accommodating copy papers to be fed to said copying processing means, said first copy paper cassette being also detachably mountable at a copy paper discharging station, and a second copy paper cassette detachably mounted at said copy paper discharging station for receiving copy paper upside down, relative to the copy paper in said first copy paper cassette, after completion of a first copying process on one side thereof, said second copy paper cassette being also detachably mountable at said copy paper feeding station, wherein each of said first and second copy paper cassettes includes a movable side plate member which is movable to widen the inlet for receiving copy papers when mounted at said copy paper discharging station and which is movable to press the copy papers at a predetermined position when mounted at said copy paper feeding station, whereby after said copy paper is received in said second cassette the positions of said first and second copy paper cassettes are reversed and another copying process is conducted to thereby obtain a copy paper having original images on both sides.
Claim 3
Dependent Claim
46 words
The duplex copying machine according to claim 1 wherein said machine further comprises a fixed side member and an arranging means movable toward said fixed side member to position the copy papers at a predetermined position before the copy papers are pressed by said plate member.
Claim 4
Dependent Claim
320 words
A duplex copying machine adapted to produce images of an original on both sides of a copy paper comprising a housing, an original holder, an exposure slit, optical means for exposing a photosensitive member to an original image through said slit, copying processing means for forming said original image on one side of said copy paper, driving means for driving said copying processing means, a first copy paper cassette detachably mounted at a copy paper feeding station and accommodating copy papers to be fed to said copying processing means, said first copy paper cassette being also detachably mountable at a copy paper discharging station, and a second copy paper cassette detachably mounted at said copy paper discharging station for receiving copy paper upside down, relative to the copy paper in said first copy paper cassette, after completion of a first copying process on one side thereof, said second copy paper cassette being also detachably mountable at said copy paper feeding station, wherein each of said first and second copy paper cassettes comprises an intermediate plate normally biased upwardly by spring means for imparting a predetermined upwardly pressing force on the copy papers contained therein and vertically movable separating pawl means resting on the topmost copy paper in said cassette for separating the copy papers one by one, wherein each of said first and second copy paper cassettes includes intermediate plate lock means for locking said intermediate plate in the vicinity of the bottom portion of the cassette, and wherein said machine further comprises intermediate plate lock releasing means for automatically releasing said intermediate plate lock means when either of said cassettes is mounted at said copy paper feeding station, whereby after said copy paper is received in said second cassette the positions of said first and second copy paper cassettes are reversed anD another copying process is conducted to thereby obtain a copy paper having original images on both sides.
Claim 5
Dependent Claim
320 words
A duplex copying machine adapted to produce images of an original on both sides of a copy paper comprising a housing, an original holder, an exposure slit, optical means for exposing a photosensitive member to an original image through said slit, copying processing means for forming said original image on one side of said copy paper, driving means for driving said copying processing means, a first copy paper cassette detachably mounted at a copy paper feeding station and accommodating copy papers to be fed to said copying processing means, said first copy paper cassette being also detachably mountable at a copy paper discharging station, and a second copy paper cassette detachably mounted at said copy paper discharging station for receiving copy paper upside down, relative to the copy paper in said first copy paper cassette, after completion of a first copying process on one side thereof, said second copy paper cassette being also detachably mountable at said copy paper feeding station, wherein each of said first and second copy paper cassettes comprises an intermediate plate normally biased upwardly by spring means for imparting a predetermined upwardly pressing force on the copy papers contained therein and vertically movable separating pawl means resting on the topmost copy paper in said cassette for separating the copy papers one by one, wherein each of said first and second copy paper cassettes includes intermediate plate lock means for locking said intermediate plate in the vicinity of the bottom portion of the cassette, and wherein said machine further comprises intermediate plate lock releasing means for automatically releasing said intermediate plate lock means when either of said cassettes is mounted at said copy paper feeding station, whereby after said copy paper is received in said second cassette the positions of said first and second copy paper cassettes are reversed anD another copying process is conducted to thereby obtain a copy paper having original images on both sides.
References Cited (Backward Citations)
US3506347A
Cited
US3645615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |