Patent US3790266A successfully refreshed from Google Patents.
US3790266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfiche projecting apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1971-10-12
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Granted: 1974-02-05
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Expires: 1991-10-12
Abstract
Abstract In an apparatus for projecting a microfiche, a microfiche holder is demountably mounted on a stage which is movable in a horizontal plane. The microfiche holder is formed with a notch and positioned on the stage, with said notch being engaged by a stopper pin provided on said stage. In changing the microfiche holder, the stage is fixed and a focal plane determining member for retaining the microfiche on the focal plane is moved out of contact with the microfiche.
Inventors
- 👤 H Ueda
- 👤 Y Sawano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:27
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115; G03B21/116
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
170 words
A microfiche projecting apparatus including an optical projecting system for projecting an image from the microfiche onto a screen, comprising a microfiche holder for retaining the microfiche therein, a slidable member having a portion to receive said holder, means for demountably fixing said holder to said slidable member, means for moving said slidable member in a plane to selectively bring different frames of said microfiche into alignment with the optical axis of said optical projecting system, a focal plane determining member, means for moving the focal plane determining member toward contact with the microfiche to maintain it there at the time of projection and for moving said focal plane determining member away from the microfiche when the microfiche is to be exchanged, a friction member and means for urging said friction member into contact with a portion of said slidable member moving means for holding said slidable member immovably when the microfiche is exchanged and means for conjointly operating said focal plane determining member and said friction member urging means.
Claim 2
Dependent Claim
170 words
A microfiche projecting apparatus including an optical projecting system for projecting an image from the microfiche onto a screen, comprising a microfiche holder for retaining the microfiche therein, a slidable member having a portion to receive said holder, means for demountably fixing said holder to said slidable member, means for moving said slidable member in a plane to selectively bring different frames of said microfiche into alignment with the optical axis of said optical projecting system, a focal plane determining member, means for moving the focal plane determining member toward contact with the microfiche to maintain it there at the time of projection and for moving said focal plane determining member away from the microfiche when the microfiche is to be exchanged, a friction member and means for urging said friction member into contact with a portion of said slidable member moving means for holding said slidable member immovably when the microfiche is exchanged and means for conjointly operating said focal plane determining member and said friction member urging means.
Claim 3
Dependent Claim
20 words
A microfiche projecting apparatus as defined in claim 1, wherein the means for conjoint operation is actuated by a solenoid.
Claim 4
Dependent Claim
35 words
A microfiche projecting apparatus as defined in claim 1, wherein said means for conjoint operation is a shaft vertically moved by a solenoid which is linked by a lever pivotably supported at the center thereof.
Claim 5
Dependent Claim
77 words
A microfiche projecting apparatus as defined in claim 1, wherein said holder has at least one notch formed in one end face thereof, while said slidable member has at least two stopper pins provided thereon, at least one of said stopper pins being engaged by said notch and the other one thereof being engaged by a portion of said end face of the holder remote from said notch, whereby said holder is positioned on said slidable member.
Claim 6
Dependent Claim
113 words
A microfiche projecting apparatus as defined in claim 4, which further comprises electric contacts provided at least at a portion of said notch and at said portion of the end face of the holder which is contacted by said stopper pin, respectively, a conductor electrically connecting said electric contacts with each other, and signaling means including a power source and electrically connected with the stopper pin to be brought into contact with said notch and the stopper pin to be brought into contact with said portion of the end face of the holder, whereby the positioning of the holder on said slidable member by said stopper pins is signaled by said signaling means.
Claim 7
Dependent Claim
27 words
The apparatus of claim 1 including means for moving the microfiche into contact with the focal plane determining member after said member is moved toward the microfiche.
Claim 8
Dependent Claim
23 words
The apparatus of claim 6 in which the microfiche moving means is at least one suction passage in the focal plane determining member.
Claim 9
Dependent Claim
18 words
The apparatus of claim 1 in which the focal plane determining member is made of thermally conductive material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |