Apparatus and method for producing an image on a sensitized surface
AssigneeTektronix, Inc.
InventorDan F. Denham
Life of this patent
Estimating the term…
Abstract
A system and method of same for converting an electrical signal defining a refreshed raster-scan image of n differentiable components, for example, colors, into a permanent hard-copy representation of such image in terms of the cumulative sum of such components. Successive segments of a raster-scan image are scrolled across the display screen of a cathode-ray tube whose target structure comprises n adjacent strips of different phosphor materials so as to successively expose a sensitized medium scrolled at the same rate adjacent the screen to each component of each segment of the image, thereby producing in such medium a copy of such image.
Claims22
A system for producing an image on a sensitized surface, comprising:
- (a) a cathode-ray tube having a faceplate defining a plurality of display areas;
- (b) means for generating a first preselected component of a first section of an image within a first one of said display areas and a second preselected component of a second image section within a second one of said display areas;
- and
- (c) means for causing said sections of said image to move across said display areas so as to successively generate in each said area the corresponding component of each said section.
An improved image-producing system of a type including a cathode-ray tube having a faceplate with a first phosphorescent material deposited thereon, means for sequentially generating different sections of an image at said faceplate by exciting said phosphorescent materials, means for exposing a sensitized surface to an image portion generated at said faceplate, and means for causing said image sections and said sensitized surface to move across said faceplate in mutual synchrony so as to sequentially expose said surface to each section of said image, wherein the improvement comprises:
- (a) a second phosphorescent material deposited on said faceplate adjacent first phosphorescent material, each of said materials being selected to produce upon excitation radiant energy having a wavelength different from that produced by the other of said materials;
- (b) means within said image-generating means for generating a preselected component of said image sections within said first phosphorescent material and a different preselected component of said image sections within said second phosphorescent material;
- and
- (c) means within said movement-causing means for causing said image portions and said sensitized surface to move across said faceplate in a direction traversing each of said phosphorescent materials.
A method of producing an image on a sensitized surface comprising the steps of:
- (a) providing a cathode-ray tube having a faceplate defining a plurality of display areas;
- (b) generating a first preselected component of a first section of an image within a first one of said display areas and a second preselected component of a second section within a second one of said display areas;
- and
- (c) causing said sections of said image to move across said display areas so as to successively generate in each said area the corresponding component of each said section.
In an image-producing method of a type wherein successive sections of an image are generated within a first phosphorescent material deposited on the faceplate of a cathode-ray tube, and a sensitized surface is exposed to said faceplate and said image sections generated thereat while said image sections and said sensitized surface are cuased to move across said faceplate in mutual synchrony so as to expose said surface to each said image section, the improvement comprising the steps of:
- (a) providing said cathode-ray tube with a second phosphorescent material deposited on said faceplate adjacent said first phosphorescent material, each of said materials being selected to produce upon excitation radiant energy having a wavelength different from that produced by the other of said materials;
- (b) generating a preselected component of a first image section within said first phosphorescent material and a different preselected component of a second image section within said second phosphorescent material;
- and
- (c) causing said image sections and said sensitized surface to move across said faceplace of said cathode-ray tube in a direction traversing each of said phosporescent materials so as to sequentially expose said surface to each said component of each said image sections.
Dependencies are inferred from the claim text.