US3754827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating equipment with a movable grid
Assignee: Fujifilm Holdings Corp
•
Filing: 1971-11-15
•
Granted: 1973-08-28
•
Expires: 1991-11-15
Abstract
Abstract In duplicating equipment having a light source radiating scattered light such as fluorescent lamp, a grid made of fine partition plates is provided to decrease the scattered light. To prevent the shadow of the grid from appearing in the duplicating image, the grid is shifted during the time of exposure. As a specific example, therefore, the grid can be supported by pin members, each of which is provided eccentrically on supporting disks rotated by a motor, so that the grid is circularly shifted.
Inventors
- 👤 T Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:57
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
In duplicating equipment having a source of radiating energy and mounting means for holding material sensitive to said radiating energy, the improvement comprising: an open grid for decreasing the scattering of said radiating energy between said source and said sensitive material, and means for shifting said grid relative to said source of radiating energy during the exposure of said sensitive material, said shifting means including a plurality of rotatable supporting members, said supporting members comprised of circular discs eccentrically supported for rotation, a connecting member connecting said grid to each of said supporting members, an endless belt contacting said discs, and a motor for driving said belt, whereby said sensitive material will not be adversely affected by the presence of said grid during the exposure to said radiating energy.
Claim 2
Dependent Claim
129 words
In duplicating equipment having a source of radiating energy and mounting means for holding material sensitive to said radiating energy, the improvement comprising: an open grid for decreasing the scattering of said radiating energy between said source and said sensitive material, and means for shifting said grid relative to said source of radiating energy during the exposure of said sensitive material, said shifting means including a plurality of rotatable supporting members, said supporting members comprised of circular discs eccentrically supported for rotation, a connecting member connecting said grid to each of said supporting members, an endless belt contacting said discs, and a motor for driving said belt, whereby said sensitive material will not be adversely affected by the presence of said grid during the exposure to said radiating energy.
Claim 3
Dependent Claim
13 words
Duplicating equipment as defined in claim 1, where the radiating energy is light.
Claim 4
Dependent Claim
17 words
Duplicating equipment as defined in claim 1, where said grid is a honeycomb structure of rectangular configuration.
Claim 5
Dependent Claim
31 words
Duplicating equipment as defined in claim 1, further including a glass plate for supporting said sensitive members and a cover plate having a cushion member for bearing against said sensitive material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |