Method for reading deformation images on electrophotographic media
AssigneeMatrix Instruments Inc.
InventorN. Balasubramanian
Life of this patent
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Abstract
A method for reading deformation images recorded on electrophotographic media involving scanning of an image surface and measuring microscopic surface tilt in a reflected beam. In one embodiment, the deformation image is scanned telecentrically and in another embodiment the surface is scanned with a beam at angles to the surface. By intercepting the retroflected beam and measuring the deviation of the reflected beam from the scanning center, a number of proportional-to-surface tilt is found. By then electrically integrating over neighboring regions, an electrical or optical pattern, reimaging the deformation image, may be constructed.
Claims10
A method of reading deformation images recorded on electrophotographic media comprising,
- scanning a deformation image on an electrophotographic medium with a radiation beam,
- detecting the optical slope from a plurality of microscopic regions,
- forming an electrical signal representing the surface slope for said plurality of microscopic regions, and
- integrating said electrical signal to obtain a signal representing the image intensity at said plurality of microscopic regions.
A method of reading deformation images recorded on electrophotographic media comprising,
- scanning a deformation image recorded on an electrophotographic medium with a light beam,
- optically detecting the slopes of the reflected beam at a plurality of microscopic regions extending over the area of the image and producing a signal proportional to said slopes,
- integrating said signals from said plurality of microscopic regions to obtain a signal representing image intensity at said plurality of microscoic regions.
A method of reading deformation images recorded on electrophotographic media comprising,
- scanning a deformation image recorded on an electrophotographic medium with a light beam,
- optically detecting the reflected beam slopes at a plurality of microscopic regions on the image,
- forming an electrical signal representing the optical slopes for said plurality of microscopic regions,
- integrating said electrical signal over areas about said plurality of microscopic regions, and
- displaying said integrated electrical signal.
Dependencies are inferred from the claim text.