US3841752A — Light source for copying machine

Claim 1

Independent Claim 119 words

In a copying machine for reproducing an original comprising a light sensitive material having a predetermined sensitivity over a given wavelength range, means for uniformly charging said light sensitive material, means including a light source for image exposing the uniformly charged light sensitive material to form a latent image thereon, and means for developing said latent image, said light source comprising: a plurality of lamps where each of said lamps produces light within a different range of wavelengths and simultaneously illuminates said original, the intensity of the light produced by each said lamp being such that the total response distribution of said light sensitive material to said light source is substantially uniform over the entire range of visible light.

Claim 2

Dependent Claim 119 words

In a copying machine for reproducing an original comprising a light sensitive material having a predetermined sensitivity over a given wavelength range, means for uniformly charging said light sensitive material, means including a light source for image exposing the uniformly charged light sensitive material to form a latent image thereon, and means for developing said latent image, said light source comprising: a plurality of lamps where each of said lamps produces light within a different range of wavelengths and simultaneously illuminates said original, the intensity of the light produced by each said lamp being such that the total response distribution of said light sensitive material to said light source is substantially uniform over the entire range of visible light.

Claim 3

Dependent Claim 14 words

A light source as in claim 1 where said original is black and white.

Claim 4

Dependent Claim 25 words

A light source as in claim 2 where one of said lamps is a white light source and a second is a green light source.

Claim 5

Dependent Claim 15 words

A light source as in claim 1 where said original has at least two colors.

Claim 6

Dependent Claim 70 words

A light source as in claim 1 where one of said light sources extends over a first wavelength range of the visible light region, a second of said light sources extends over a second wavelength region of the visible light region having wavelengths shorter than said first wavelength region, and a third of said light sources extends over a third wavelength region having wavelengths shorter than said second wavelength region.

Claim 7

Dependent Claim 14 words

Apparatus as in claim 1 including means for adjusting the intensity of each lamp.

Claim 8

Dependent Claim 45 words

Apparatus as in claim 1 where a first pair of said plurality of lamps are disposed in opposing relationship a first distance from said original and a second pair of said plurality of lamps are disposed in opposing relationship a second distance from said original.

Claim 9

Dependent Claim 36 words

Apparatus as in claim 7 where said first pair of lamps are closer to said original than said second pair and where said second pair of lamps are closer to one another than said first pair.

Claim 10

Dependent Claim 132 words

In a color electrophotographic copying apparatus comprising a photosensitive material having a predetermined sensitivity over a given wavelength image, means for charging the photosensitive material, means including a light source For image exposing the photosensitive material to an original and filters for color separating the original and a plurality of means for developing the latent image thus formed on the photosensitive material with different colored toners, said light source comprising a plurality of lamps where each said lamp produces light with a different range of wavelengths, means for simultaneously activating the lamps to expose the original, and means for adjusting the intensity of each lamp so that the total response distribution of the photosensitive material to the light source and the filters is substantially uniform over the entire range of visible light.

Claim 11

Dependent Claim 132 words

In a color electrophotographic copying apparatus comprising a photosensitive material having a predetermined sensitivity over a given wavelength image, means for charging the photosensitive material, means including a light source For image exposing the photosensitive material to an original and filters for color separating the original and a plurality of means for developing the latent image thus formed on the photosensitive material with different colored toners, said light source comprising a plurality of lamps where each said lamp produces light with a different range of wavelengths, means for simultaneously activating the lamps to expose the original, and means for adjusting the intensity of each lamp so that the total response distribution of the photosensitive material to the light source and the filters is substantially uniform over the entire range of visible light.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-10-14	1978-04-15	1978-10-15	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-10-14	1982-04-15	1982-10-15	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-10-14	1986-04-15	1986-10-15	$7700.00	Window Closed / Lapsed

Light source for copying machine

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