US3824013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light source alignment device
Assignee: Xerox Corp
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Filing: 1972-12-07
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Granted: 1974-07-16
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Expires: 1992-12-07
Abstract
Abstract A device in which an apertured, substantially cylindrical light source is aligned relative to the support thereof for providing a substantially optimum illumination profile therefrom. The foregoing abstract is neither intended to define the invention disclosed in the specification, nor is it intended to be limiting as to the scope of the invention in any way.
Inventors
- 👤 W Kidd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:56
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; G03G15/04036; G03G15/043; G03G15/0435
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
238 words
A device for aligning an illumination system employed in an electrophotographic printing machine of the type including an original document disposed on a transparent viewing platen, the illumination system having a movable support carriage with a first reference surface thereon and an apertured, substantially cylindrical light source mounted on the carriage, the carriage being arranged to move so that the light source illuminates incremental areas of the original document positioned on the viewing platen of the printing machine, said alignment device including: an elongated plate comprising a second reference surface substantially complementary to the first reference surface of the carriage and a surface substantially normal to the second reference surface, said plate having an arcuate portion extending inwardly into said plate from the normal surface with an oblique surface extending substantially in a transverse direction from one end of the second reference surface to one end of the arcuate portion, and a calibration mark being disposed on the arcuate portion, said plate being mounted on the carriage with the second reference surface thereof contacting the first reference surface of the carriage and the arcuate portion arranged to encompass a portion of the circumferential surface of the light source with the oblique surface contacting tangentially a portion of the circumferential surface thereof so that the light source may be rotated to align one edge of the aperture thereof with the calibration mark providing a substantially optimum illumination profile therefrom.
Claim 2
Independent Claim
238 words
A device for aligning an illumination system employed in an electrophotographic printing machine of the type including an original document disposed on a transparent viewing platen, the illumination system having a movable support carriage with a first reference surface thereon and an apertured, substantially cylindrical light source mounted on the carriage, the carriage being arranged to move so that the light source illuminates incremental areas of the original document positioned on the viewing platen of the printing machine, said alignment device including: an elongated plate comprising a second reference surface substantially complementary to the first reference surface of the carriage and a surface substantially normal to the second reference surface, said plate having an arcuate portion extending inwardly into said plate from the normal surface with an oblique surface extending substantially in a transverse direction from one end of the second reference surface to one end of the arcuate portion, and a calibration mark being disposed on the arcuate portion, said plate being mounted on the carriage with the second reference surface thereof contacting the first reference surface of the carriage and the arcuate portion arranged to encompass a portion of the circumferential surface of the light source with the oblique surface contacting tangentially a portion of the circumferential surface thereof so that the light source may be rotated to align one edge of the aperture thereof with the calibration mark providing a substantially optimum illumination profile therefrom.
Claim 3
Dependent Claim
20 words
A device as recited in claim 1, wherein said elongated plate is made preferably from a substantially transparent plastic material.
Claim 4
Dependent Claim
18 words
A device as recited in claim 2, wherein said elongated plate is preferably of a substantially rectangular configuration.
Claim 5
Dependent Claim
22 words
A device as recited in claim 3, wherein the arcuate portion of said plate includes a calibrated scale graduated preferably in degrees.
References Cited (Backward Citations)
US1356656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |