Xerographic fusing method and apparatus

Claim 2

Apparatus for xerographically reproducing information on materials such as film or the like comprising: a photoconductive member adapted to receive input information, drive means for advancing said photoconductive member through a series of processing stations, charging means for applying a uniform electrostatic charge on said photoconductive member, exposure means for exposing and forming electrostatic latent images on said photoconductive member in accordance with the input information, means for developing said latent electrostatic images, transport means for advancing a film web containing image frames thereon, means for actuating said exposure means in a timed relationship with the advancement of said film web, means for transferring developed electrostatic images from said photoconductive member to said film web, a source of electromagnetic radiation adapted when energized to direct high intensity short duration radiations toward said electrostatic images on said film web, circuit means for providing actuating signals to said source of electromagnetic radiation, cam actuated switch means for activating said circuit means in a timed relationship with the advancement of said photoconductive member, and means interposed between said source of electromagnetic radiation and said electrostatic images on said film web for filtering out wavelengths of radiation within a selected range emitted by said source.

Claim 3

The apparatus as set forth in claim 1 wherein said means interposed between said source and said film web includes an optical filter adapted to reflect wavelengths of radiation which produce excessive heating of said film web and to uniformly transmit wavelengths of radiation sufficient to fuse said electrostatic images to said film web without producing excessive heating of said film web.

Claim 4

Apparatus for flash fusing electroscopic powder images on photographically processed films or the like comprising: a source of electromagnetic radiation, a housing surrounding said source, means for advancing film material having electroscopic powder images thereon past said housing in close proximity to said source, means for intermittently activating said source to produce short duration high intensity electromagnetic radiations, means for exposing said film material to electromagnetic radiations emitted by said source, and means interposed between said source and said film material for selectively controlling the wavelengths of radiation to which the film material and powder images are subjected.

Claim 5

Apparatus for flash fusing electroscopic powder images on photographically processed films or the like comprising: a source of electromagnetic radiation, a housing surrounding said source, means for advancing film material having electroscopic powder images thereon past said housing in close proximity to said source, means for intermittently activating said source to produce short duration high intensity electromagnetic radiations, means for exposing said film material to electromagnetic radiations emitted by said source, and means interposed between said source and said film material for selectively controlling the wavelengths of radiation to which the film material and powder images are subjected.

Claim 6

Apparatus for xerographically reproducing information on materials such as film or the like comprising: a photoconductive member adapted to receive input information, drive means for advancing said photoconductive member through a sEries of processing stations, charging means for applying a uniform electrostatic charge on said photoconductive member, exposure means for exposing and forming electrostatic latent images on said photoconductive member in accordance with the input information, means for developing said latent electrostatic images, transport means for advancing a film web containing image frames thereon, means for actuating said exposure means in a timed relationship with the advancement of said film web, means for transferring developed electrostatic images from said photoconductive member to said film web, a source of electromagnetic radiation adapted when energized to direct high intensity short duration radiations toward said electrostatic images on said film web, circuit means for providing actuating signals to said source of electromagnetic radiation, cam actuated switch means for activating said circuit means in a timed relationship with the advancement of said photoconductive member, and means interposed between said source of electromagnetic radiation and said electrostatic images on said film web for filtering out wavelengths of radiation including an optical filter adapted to transmit wavelengths ranging from approximately 3,000 A to approximately 8,000 A.

Claim 7

Apparatus for xerographically reproducing information on materials such as film or the like comprising: a photoconductive member adapted to receive input information, drive means for advancing said photoconductive member through a sEries of processing stations, charging means for applying a uniform electrostatic charge on said photoconductive member, exposure means for exposing and forming electrostatic latent images on said photoconductive member in accordance with the input information, means for developing said latent electrostatic images, transport means for advancing a film web containing image frames thereon, means for actuating said exposure means in a timed relationship with the advancement of said film web, means for transferring developed electrostatic images from said photoconductive member to said film web, a source of electromagnetic radiation adapted when energized to direct high intensity short duration radiations toward said electrostatic images on said film web, circuit means for providing actuating signals to said source of electromagnetic radiation, cam actuated switch means for activating said circuit means in a timed relationship with the advancement of said photoconductive member, and means interposed between said source of electromagnetic radiation and said electrostatic images on said film web for filtering out wavelengths of radiation including an optical filter adapted to transmit wavelengths ranging from approximately 3,000 A to approximately 8,000 A.

Claim 8

Apparatus for flash fusing electroscopic powder images on photographically processed films or the like comprising: a source of electromagnetic radiation, a housing surrounding said source comprising means to expel excessive heat generated by said radiation source, means for advancing film material having electroscopic powder images thereon past said housing in close proximity to said source, means for intermittently activating said source to produce short duration high intensity electromagnetic radiations, means for exposing said film material to electromagnetic radiations emitted by said source, and means interposed between said source and said film material for selectively controlling the wavelengths of radiation to which the film material and powder images are subjected comprising an optical filter adapted to reflect wavelengths ranging from approximately 7,500 A to approximately 17,000 A.

Claim 9

Apparatus for flash fusing electroscopic powder images on photographically processed films or the like comprising: a source of electromagnetic radiation, a housing surrounding said source comprising means to expel excessive heat generated by said radiation source, means for advancing film material having electroscopic powder images thereon past said housing in close proximity to said source, means for intermittently activating said source to produce short duration high intensity electromagnetic radiations, means for exposing said film material to electromagnetic radiations emitted by said source, and means interposed between said source and said film material for selectively controlling the wavelengths of radiation to which the film material and powder images are subjected comprising an optical filter adapted to reflect wavelengths ranging from approximately 7,500 A to approximately 17,000 A.

Claim 10

Apparatus for flash fusing electroscopic powder images to a support means comprising: means adapted to intermittently generate a source of electromagnetic radiation, and means adapted to selectively control the wavelengths emanating from said source of electromagnetic radiation whereby said selected wavelength radiation fuses said powder images to said support means.

Claim 11

Apparatus for flash fusing electroscopic powder images to a support means comprising: means adapted to intermittently generate a source of electromagnetic radiation, and means adapted to selectively control the wavelengths emanating from said source of electromagnetic radiation whereby said selected wavelength radiation fuses said powder images to said support means.

Claim 12

Apparatus for flash fusing electroscopic powder images to a support means comprising: means adapted to intermittently generate a source of electromagnetic radiation having a short duration and high intensity, and means interposed between said source of electromagnetic radiation and said support means adapted to selectively control the wavelengths emanating from said source of electromagnetic radiation whereby said selected wavelength radiation fuses said powder images to said support means.

Claim 13

Apparatus for flash fusing electroscopic powder images to a support means comprising: means adapted to intermittently generate a source of electromagnetic radiation having a short duration and high intensity, and means interposed between said source of electromagnetic radiation and said support means adapted to selectively control the wavelengths emanating from said source of electromagnetic radiation whereby said selected wavelength radiation fuses said powder images to said support means.

Claim 14

Apparatus for flash fusing electroscopic powder images to a support means comprising: means adapted to generate a source of electromagnetic radiation having a short duration and high intensity, means for advancing said support means in close proximity to said source of electromagnetic radiation and in synchronism with the actuation thereof, and means adapted to selectively control the wavelength emanating from said source of electromagnetic radiation whereby said selected wavelength radiation fuses said powder images to said support means in predetermined areas.

Claim 15

Apparatus for flash fusing electroscopic powder images to a support means comprising: means adapted to generate a source of electromagnetic radiation having a short duration and high intensity, means for advancing said support means in close proximity to said source of electromagnetic radiation and in synchronism with the actuation thereof, and means adapted to selectively control the wavelength emanating from said source of electromagnetic radiation whereby said selected wavelength radiation fuses said powder images to said support means in predetermined areas.

Claim 16

Apparatus for flash fusing electroscopic powder images on photographically processed films or the like comprising: a source of electromagnetic radiation, a housing surrounding said electromagnetic radiation source, means for advancing film material having Electroscopic powder images thereon past said housing in close proximity to said electromagnetic radiation source, means for intermittently activating said electromagnetic radiation source to produce short duration high intensity electromagnetic radiations, means for exposing said film material to electromagnetic radiations emitted by said electromagnetic radiation source, and means interposed between said electromagnetic radiation source and said film material comprising an optical filter adapted to reflect wavelengths of radiation which produce excessive heating of said film material and to uniformly transmit wavelengths of radiation sufficient to fuse said electroscopic powder images to said film material without producing excessive heating of said film material.

Claim 17

Apparatus for flash fusing electroscopic powder images on photographically processed films or the like comprising: a source of electromagnetic radiation, a housing surrounding said electromagnetic radiation source, means for advancing film material having Electroscopic powder images thereon past said housing in close proximity to said electromagnetic radiation source, means for intermittently activating said electromagnetic radiation source to produce short duration high intensity electromagnetic radiations, means for exposing said film material to electromagnetic radiations emitted by said electromagnetic radiation source, and means interposed between said electromagnetic radiation source and said film material comprising an optical filter adapted to reflect wavelengths of radiation which produce excessive heating of said film material and to uniformly transmit wavelengths of radiation sufficient to fuse said electroscopic powder images to said film material without producing excessive heating of said film material.