Color xerographic recording method

Claim 2

A RECORDING SHEET FOR COLOR XEROGRAPHY COMPRISING A BASE SHEET AND A PHOTOCONDUCTIVE LAYER APPLIED TO SAID BASE SHEET, SAID PHOTOCONDUCTIVE LAYER COMPRISING A PHOTOCONDUCTIVE EMULSION COMPOSITION, SAID PHOTOCONDUCTIVE EMULSION COMPOSITION BEING SPECTRALLY SENSITIVE TO AT LEAST THREE COLORS SO AS TO BE SUBSTANTIALLY WHITE TAKEN AS A WHOLE, AND A PLURALITY OF PHOTOCONDUCTIVE AREAS WITH RESPECTIVE ONES OF SAID PHOTOCONDUCTIVE AREAS HAVING DIFFERENT SPECTRAL SENSITIVITIES CORRESPONDING TO SAID AT LEAST THREE COLORS, SAID PLURALITY OF PHOTOCONDUCTIVE AREAS BEING RANDOMLY DENSELY EMBEDDED IN SAID PHOTOCONDUCTIVE EMULSION COMPOSITION IN NON-OVERLAPPING RELATIONSHIP SUCH THAT EACH RESPECTIVE PHOTOCONDUCTIVE AREA HAS A GRADATION OF SPECTRAL SENSITIVITY IN THE PERIPHERY THEREOF, SO THAT THE SPECTRAL SENSITIVITIES OVER THE LAYER ARE GRADUALLY VARIED BETWEEN ADJACENT AREAS, THEREBY FORMING SAID LAYER.

Claim 3

A recording sheet according to claim 1, wherein each of said plurality of photoconductive areas having different spectral sensitivities have a diametrical dimension of from 1 to 1/3 times the thickness of said photoconductive layer.

Claim 4

A recording sheet according to claim 1, wherein each of said plurality of photoconductive areas having different spectral sensitivities have a diametrical dimension of from 5 to 50 microns.

Claim 5

A recording sheet according to claim 3, wherein said photoconductive layer has a thickness of about 15 microns.

Claim 6

A recording sheet according to claim 1, wherein said base sheet has a resistance in the range of 106 to 1011 ohms.

Claim 7

A color xerographic recording process using a recording sheet comprising a base sheet and a photoconductive layer applied to said base sheet, said photoconductive layer comprising a photoconductive emulsion composition, said photoconductive emulsion composition being spectrally sensitive to at least three colors so as to be substantially white taken as a whole, and a plurality of photoconductive areas having different spectral sensitivities corresponding to said at least three colors, said plurality of photoconductive areas being randomly densely embedded in saiD photoconductive emulsion composition in non-overlapping relationship such that each respective photoconductive area has a gradation of spectral sensitivity in the periphery thereof, so that the spectral sensitivities over the layer are gradually varied between adjacent areas, comprising the steps of uniformly charging said recording sheet; exposing the charged recording sheet to an original image through a first color filter to produce a latent charge image on said recording sheet; developing said latent charge image on said recording sheet with a developing agent having charged color toners of the same polarity as that of said latent charge image, said color toners being in corresponding relationship to said first color filter; and repeating said steps of charging, exposing and developing for a predetermined number of different color filters, thereby producing a color image record of said original image.

Claim 8

A color xerographic recording process using a recording sheet comprising a base sheet and a photoconductive layer applied to said base sheet, said photoconductive layer comprising a photoconductive emulsion composition, said photoconductive emulsion composition being spectrally sensitive to at least three colors so as to be substantially white taken as a whole, and a plurality of photoconductive areas having different spectral sensitivities corresponding to said at least three colors, said plurality of photoconductive areas being randomly densely embedded in saiD photoconductive emulsion composition in non-overlapping relationship such that each respective photoconductive area has a gradation of spectral sensitivity in the periphery thereof, so that the spectral sensitivities over the layer are gradually varied between adjacent areas, comprising the steps of uniformly charging said recording sheet; exposing the charged recording sheet to an original image through a first color filter to produce a latent charge image on said recording sheet; developing said latent charge image on said recording sheet with a developing agent having charged color toners of the same polarity as that of said latent charge image, said color toners being in corresponding relationship to said first color filter; and repeating said steps of charging, exposing and developing for a predetermined number of different color filters, thereby producing a color image record of said original image.