US3877807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image scanning device in a photocopying apparatus
Assignee: Minolta Co Ltd
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Filing: 1974-03-12
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Granted: 1975-04-15
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Expires: 1994-03-12
Abstract
Abstract An image scanning device in a photocopying apparatus is disclosed wherein first and second mirrors are each supported in front and rear bearings slidably mounted on common shafts. The front and rear bearings of the first mirror lie between the front and rear bearings of the second mirror, and the distance between the second mirror front and rear bearings is equal to the sum of the distance between the first mirror front and rear bearings and half the distance the first mirror is required to be moved in order to scan the entirety of a document to be copied, whereby shorter guide shafts may be used and a more compact apparatus is obtained.
Inventors
- 👤 Takaji Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:44
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
195 words
An image scanning device for directing images of successive portions of an original document onto a moving photosensitive material in a photocopying apparatus comprising a first mirror assembly supporting member, a second mirror assembly supporting member, a plurality of bearing members, at least one shaft, said first and second mirror assembly supporting members being individually supported by respective bearing members on said at least one shaft, and moved in the same direction parallel to said document, said second mirror assembly supporting member being moved at a half speed of said first mirror assembly supporting member, whereby the length of the optical path from said document to said photosensitive material is maintained constant during scanning of said original document, said bearing members of the first mirror assembly supporting member positioned between said bearing members of the second mirror assembly supporting member on said at least one shaft, and the distance between said bearing members of the second mirror assembly supporting member being at least equal to the sum of the distance between said bearing members of the first mirror assemBly supporting member and a half of a movable distance of said first mirror assembly supporting member.
Claim 2
Dependent Claim
195 words
An image scanning device for directing images of successive portions of an original document onto a moving photosensitive material in a photocopying apparatus comprising a first mirror assembly supporting member, a second mirror assembly supporting member, a plurality of bearing members, at least one shaft, said first and second mirror assembly supporting members being individually supported by respective bearing members on said at least one shaft, and moved in the same direction parallel to said document, said second mirror assembly supporting member being moved at a half speed of said first mirror assembly supporting member, whereby the length of the optical path from said document to said photosensitive material is maintained constant during scanning of said original document, said bearing members of the first mirror assembly supporting member positioned between said bearing members of the second mirror assembly supporting member on said at least one shaft, and the distance between said bearing members of the second mirror assembly supporting member being at least equal to the sum of the distance between said bearing members of the first mirror assemBly supporting member and a half of a movable distance of said first mirror assembly supporting member.
Claim 3
Dependent Claim
116 words
An image scanning device in a photocopying apparatus as defined in claim 1 further comprising a cable line connecting said first mirror assembly supporting member to the second mirror assembly supporting member, one end of said cable being fixedly attached to the first mirror assembly supporting member, and a pulley rotatably provided on the second mirror assembly supporting member, said cable line being led around the pulley and the other end thereof being fixedly attached to a certain position, said first mirror assembly supporting member having a first engage member, and a chain having a second engage member and adapted to be driven parallel to said document, said first engage member contacting said second engage member.
Claim 4
Dependent Claim
69 words
An image scanning device in a photocopying apparatus as defined in claim 2 further comprising sprocket wheels about which said chain travels and said first engage member being adapted to contact the second engage member when the second engage member travels around one of said sprocket wheels, whereby the first mirror assembly supporting member is driven by the chain through the medium of the first and second engage members.
Claim 5
Dependent Claim
49 words
An image scanning device in a photocopying apparatus as defined in claim 3 wherein said first engage member is movably mounted on the first mirror assembly supporting member and moves by contact with an actuating member mounted at a certain position in said device for disengaging said engage members.
Claim 6
Dependent Claim
54 words
An image scanning device in a photocopying apparatus as defined in claim 4 further comprising spring means coupled to said second mirror assembly supporting member, said spring means pulling said second mirror assembly supporting member for returning the mirror assembly supporting members to initial positions when the contact between said engage members is released.
References Cited (Backward Citations)
US3330181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |