US3784304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocopying machine
Assignee: SCM Corp
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Filing: 1972-01-26
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Granted: 1974-01-08
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Expires: 1992-01-26
Abstract
Abstract A photocopying machine produces a copy of a page of a bound book placed on a stationary window by moving an optical projection system past the window for projecting the images of successive elongated strip portions of the page onto a light-sensitive copy material. The portion of the page placed flat against the window is maximized by providing a downwardly extending wall adjacent an edge of the window to minimize the portion of the page adjacent the binding being pulled out of focus by the binding of the book. Movable past the window with the optical projection system is an illumination system for illuminating an elongated strip portion of the page for projection onto the light-sensitive copy material. The illumination system has a physical configuration substantially coextensive with the illuminated strip portion being projected onto the copy paper, and one end of the illumination system is substantially coextensive with the edge of the window adjacent the downwardly extending wall. The illumination system includes an elongated elliptical reflector having two single-ended tubular-shaped lamps extending obliquely through suitable openings in the reflector with two transverse reflectors at the opposite ends of the elongated elliptical reflector which extend transversely to the obliquely positioned lamps.
Inventors
- 👤 F Babin
- 👤 K Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:54
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526; G03B27/527
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
An illumination system for producing a non-uniform distribution of illumination intensity onto a window at an object plane comprising light source means for illuminating said window at said object plane, an elongated light reflector for reflecting light from said light source means onto the object plane, said light reflector having a longitudinally extending concave reflecting surface with a cross-sectional configuration in the form of the surface of a cylinder generated by translating a conic section along a line normal to said section, said section having a vertex and at least one focal point, said light source means having an elongated configuration whose longitudinal axis intersects the locus of the focus and locus of the vertex of said conic section as it is so translated at an oblique angle, said illumination system producing a non-uniform distribution of illumination onto said window at said object plane with the illumination intensity being produced at the marginal portions of said window corresponding to the ends of said light reflector being substantially greater than the illumination intensity being produced at the central portions of said window.
Claim 2
Dependent Claim
181 words
An illumination system for producing a non-uniform distribution of illumination intensity onto a window at an object plane comprising light source means for illuminating said window at said object plane, an elongated light reflector for reflecting light from said light source means onto the object plane, said light reflector having a longitudinally extending concave reflecting surface with a cross-sectional configuration in the form of the surface of a cylinder generated by translating a conic section along a line normal to said section, said section having a vertex and at least one focal point, said light source means having an elongated configuration whose longitudinal axis intersects the locus of the focus and locus of the vertex of said conic section as it is so translated at an oblique angle, said illumination system producing a non-uniform distribution of illumination onto said window at said object plane with the illumination intensity being produced at the marginal portions of said window corresponding to the ends of said light reflector being substantially greater than the illumination intensity being produced at the central portions of said window.
Claim 3
Dependent Claim
66 words
An illumination system according to claim 1, and further comprising a transverse reflector having a substantially planar reflecting surface for reflecting light from said elongated light source means onto the object plane, said planar reflecting surface being transverse to the plane extending through the vertex and the focal point of said elongated light reflector, and said planar reflecting surface obliquely intersecting said longitudinally extending focal point.
Claim 4
Dependent Claim
91 words
An illumination system according to claim 1, and further comprising a transverse reflector having a substantially planar light reflecting surface for reflecting light from said light source means onto the object plane, said transverse reflector being mounted on said elongated light reflector with said planar light reflecting surface being transverse to the plane extending through the vertex and the focal point of said elongated light reflector, and said planar light reflecting surface obliquely intersecting said longitudinally extending focal point transversely to the direction of elongation of said elongated light source means.
Claim 5
Dependent Claim
103 words
An illumination system according to claim 3, and further comprising a second transverse reflector having a substantially planar light reflecting surface for reflecting light from said light source means onto the object plane, said second transverse light reflector being mounted on said elongated light reflector in spaced relation from said other transverse reflector, said second planar light reflecting surface being transverse to the plane extending through said vertex and said focal point, and said second planar light reflecting surface obliquely intersecting the longitudinally extending focal point at substantially the same angle as said elongated light source means intersects said longitudinally extending focal point.
Claim 6
Dependent Claim
77 words
An illumination system according to claim 1, and further comprising a second light source means for illuminating the object plane, said second light source means having an elongated configuration lying in the plane extending through said vertex and said focal point of said elongated light reflector, and said second elongated light source means obliquely intersecting said longitudinally extending focal point at an angle substantially transverse to the direction of elongation of said other elongated light source means.
Claim 7
Dependent Claim
174 words
An illumination system according to claim 5, and further comprising a transverse reflector having a substantially planar light reflecting surface for reflecting light from said elongated light source means onto the object plane, said planar light reflecting surface being mounted adjacent said elongated light source means and transverse to the plane extending through the vertex and the focal point of said elongated light reflector, said planar light reflecting surface obliquely intersecting said longitudinally extending focal point transversely to the direction of elongation of said elongated light source means, a second transverse reflector having a substantially planar reflecting surface for reflecting light from said second elongated light source means onto the object plane, said second planar light reflecting surface being mounted adjacent said second elongated light source means and transverse to the plane extending through the vertex and the focal point of said second elongated light reflector, and said second planar light reflecting surface obliquely intersecting said longitudinally extending focal point transversely to the direction of elongation of the said second elongated light source means.
Claim 8
Dependent Claim
118 words
An illumination system according to claim 1, and further comprising electrical terminal means mounted on an end of said elongated light source means, said elongated light reflector having an opening formed therethrough extending from the vertex of said light reflecting surface to a backside of said elongated light reflector, electrical contact means mounted on the backside of said elongated light reflector and adjacent said opening formed therethrough for receiving said electrical terminal means in electrical contact therewith, and said elongated light source means being partially received through the opening formed in said elongated light reflector and being supported therein by said electrical contact means engaging said electrical terminal means on the end of said elongated light source means.
Claim 9
Dependent Claim
211 words
In a photocopying mAchine, the combination comprising a window for supporting an object to be copied, an exposure station where copy paper is exposed to the image of the object to be copied, an illumination system for illuminating the object supported by the window, a projection system for projecting the image of the illuminated object onto the copy paper at the exposure station, said illumination system including light source means for illuminating the object supported by said window, an elongated light reflector for reflecting light from said light source means onto the object supported by said window, said light reflector having a longitudinally extending concave reflecting surface with a cross-sectional configuration in the form of the surface of a cylinder generated by translating a conic section along a line normal to said section; said light source means having an elongated configuration whose longitudinal axis intersects the locus of the focus and locus of the vertex of said conic section as it is so translated at an oblique angle, said projection system including an elongated planar reflecting surface adjacent said elongated light reflector and obliquely positioned beneath said window, and said elongated light reflector shielding said elongated planar reflecting surface of said projection system from direct illumination by said light source means.
Claim 10
Dependent Claim
211 words
In a photocopying mAchine, the combination comprising a window for supporting an object to be copied, an exposure station where copy paper is exposed to the image of the object to be copied, an illumination system for illuminating the object supported by the window, a projection system for projecting the image of the illuminated object onto the copy paper at the exposure station, said illumination system including light source means for illuminating the object supported by said window, an elongated light reflector for reflecting light from said light source means onto the object supported by said window, said light reflector having a longitudinally extending concave reflecting surface with a cross-sectional configuration in the form of the surface of a cylinder generated by translating a conic section along a line normal to said section; said light source means having an elongated configuration whose longitudinal axis intersects the locus of the focus and locus of the vertex of said conic section as it is so translated at an oblique angle, said projection system including an elongated planar reflecting surface adjacent said elongated light reflector and obliquely positioned beneath said window, and said elongated light reflector shielding said elongated planar reflecting surface of said projection system from direct illumination by said light source means.
Claim 11
Dependent Claim
114 words
In a photocopying machine according to claim 8, the combination further comprising a carriage for movement past said window, said carriage supporting said illuminating system and said projection system for movement therewith, said projection system including an aperture through which the image of the object is projected onto the copy paper at said exposure station, said illumination system producing an imperfect distribution of illumination intensity over said window, said aperture controlling the quantity of light passing therethrough, and means located adjacent said aperture and extending into said path of light passing through said aperture for blocking a portion of the light to compensate for the imperfect illumination of said window by said illumination system.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |