Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
214 words
In a method for controlling an optical scanning exposure system for exposing a photosensitive layer on a faceplate of a cathode ray tube wherein the electrical control system includes an angle of incidence and scan rate memory storage means, scanning means, and an angle of incidence control means and the method for controlling the optical scanning exposure system includes the steps of activating the scan rate means to cause light beam scanning of the faceplate of the cathode ray tube, applying signals representative of the positional location of a light beam to the angle of incidence and scan rate memory means to derive signals representative of the angle of incidence of an electron beam, coupling the signals representative of the angle of incidence of an electron beam to said angle of incidence control means, and coupling signals representative of said desired rate of scan to said means for effecting horizontal and vertical scanning, the improvement comprising the added step of: retrieving from said angle of incidence and scan rate memory means signals for altering the operation of said scan rate means to cause said horizontal and vertical light beam scanning means to provide overlapping adjacent horizontal scan lines and more uniform illumination of the photosensitive layer on the faceplate of the cathode ray tube.
Claim 2
Dependent Claim
214 words
In a method for controlling an optical scanning exposure system for exposing a photosensitive layer on a faceplate of a cathode ray tube wherein the electrical control system includes an angle of incidence and scan rate memory storage means, scanning means, and an angle of incidence control means and the method for controlling the optical scanning exposure system includes the steps of activating the scan rate means to cause light beam scanning of the faceplate of the cathode ray tube, applying signals representative of the positional location of a light beam to the angle of incidence and scan rate memory means to derive signals representative of the angle of incidence of an electron beam, coupling the signals representative of the angle of incidence of an electron beam to said angle of incidence control means, and coupling signals representative of said desired rate of scan to said means for effecting horizontal and vertical scanning, the improvement comprising the added step of: retrieving from said angle of incidence and scan rate memory means signals for altering the operation of said scan rate means to cause said horizontal and vertical light beam scanning means to provide overlapping adjacent horizontal scan lines and more uniform illumination of the photosensitive layer on the faceplate of the cathode ray tube.
Claim 3
Dependent Claim
25 words
The improvement of claim 1 including the steps of overlapping said adjacent horizontal scan lines at least 50% of the width of the scan line.
Claim 4
Dependent Claim
24 words
The improvement of claim 1 including the steps of overlapping said adjacent horizontal scan lines about 70% of the width of the scan line.
Claim 5
Dependent Claim
67 words
The improvement of claim 1 including the step of retrieving from said angle of incidence scan rate memory means signals for altering the operation of said scan rate means to cause said horizontal and vertical light beam scanning means to scan beyond the end of the operable region of the faceplate of the cathode ray tube to insure uniform exposure of the photosensitive material on the faceplate.
Claim 6
Dependent Claim
56 words
The improvement of claim 1 including the step of retrieving from said angle of incidence scan rate memory means signals for altering the operation of said scan rate means to cause said horizontal and vertical light beam scanning means to horizontally overscan the ends of the operable region of the faceplate of the cathode ray tube.
Claim 7
Dependent Claim
80 words
The improvement of claim 1 wherein said scan rate means includes a vertical stepping motor and including the step of retrieving a signal from said angle of incidence and scan rate memory means to cause the stepping motor of said scan rate means to alter the horizontal and vertical light beam scanning means to move the light beam vertically a distance of not more than 50% of the width of a horizontal scan line for each line of horizontal scan.