US3741646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying apparatus
Assignee: Canon Inc
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Filing: 1972-02-11
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Granted: 1973-06-26
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Expires: 1992-02-11
Abstract
Abstract A copying apparatus in which thin or thick originals such as individual sheets or thick books are selectively driven over an illumination slit aperture, characterized by a transparent book support such as a glass plate connected to a known transport mechanism for individual sheets such as a pair of transport rolls. The book support is located on the extension of the transport mechanism, and the transport mechanism and the book support are selectively movable together.
Inventors
- 👤 W Knechtel
- 👤 G Petersdorf
- 👤 W Sandner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:26
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221; G03B27/6235
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
197 words
Photocopying apparatus comprising a housing, exposure slit means fixedly mounted on said housing, a transparent support member for receiving thereon a thick original to be copied, sheet original transporting means including at least one pair of opposed rollers operable to move a sheet original past said exposure slit means, a casing movably mounted on said housing and having said support member and sheet original fixedly connected thereto wherein said support member can be moved past said exposure slit means, means for releasably holding said casing in a fixed position while said sheet original transporting means operates to move a sheet original past said exposure slit means and for releasing said casing for said movement on said housing when a thick original is to be copied, driving means coupled to one of said opposed rollers to impart rotational movement thereto, and clutch means mounted on said casing and coupled to said driving means for allowing said casing to remain in said fixed position while a sheet original is being copied and to maintain the speed of movement of said casing in synchronism with the speed of movement of said driving means when a thick original is being copied.
Claim 2
Dependent Claim
197 words
Photocopying apparatus comprising a housing, exposure slit means fixedly mounted on said housing, a transparent support member for receiving thereon a thick original to be copied, sheet original transporting means including at least one pair of opposed rollers operable to move a sheet original past said exposure slit means, a casing movably mounted on said housing and having said support member and sheet original fixedly connected thereto wherein said support member can be moved past said exposure slit means, means for releasably holding said casing in a fixed position while said sheet original transporting means operates to move a sheet original past said exposure slit means and for releasing said casing for said movement on said housing when a thick original is to be copied, driving means coupled to one of said opposed rollers to impart rotational movement thereto, and clutch means mounted on said casing and coupled to said driving means for allowing said casing to remain in said fixed position while a sheet original is being copied and to maintain the speed of movement of said casing in synchronism with the speed of movement of said driving means when a thick original is being copied.
Claim 3
Dependent Claim
59 words
Photocopying apparatus according to claim 1, wherein said clutch means comprises a shaft fixedly mounted to said casing and means engaging said driving means for free rotation only in one direction with respect to said shaft and being fixed with respect to said shaft to stop the rotation thereof when said casing is moved to copy a thick original.
Claim 4
Dependent Claim
98 words
Photocopying apparatus according to claim 2, wherein said driving means includes a chain, and wherein said engaging means comprises a wheel provided to be rotatable around said fixed shaft and having teeth for engaging said chain, said wheel having a plurality of circumferentially extending openings communicating with said shaft and each said opening being tapereD at its outer periphery to provide a wide portion and a narrow portion, and a plurality of balls respectively received in said openings to be rotatable at said wide portion while confined to fix said wheel to said shaft at said narrow portion.
Claim 5
Dependent Claim
35 words
Photocopying apparatus according to claim 2, wherein said engaging means includes a wheel mounted on said shaft and provided with a gear, and wherein said driving means comprises a chain in mesh with said gear.
Claim 6
Dependent Claim
25 words
Photocopying apparatus according to claim 1, wherein said casing is mounted for being manually returned to its said fixed position after completion of its movement.
Claim 7
Dependent Claim
33 words
Photocopying apparatus according to claim 1, wherein said transparent support member for said thick original is mounted to provide a guide member for a sheet original inserted into said sheet original transporting means.
Claim 8
Dependent Claim
37 words
Photocopying apparatus according to claim 1, wherein said means for releasably holding said casing comprises a projecting member resiliently mounted on said housing, and wherein said casing defines a recessed area for releasably receiving said projecting member.
References Cited (Backward Citations)
US3510218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |