Method of typewriting or printing

Claim 1

A method of reproducing a selected symbol on a writing surface from electrically stored information which is used to control deflection in X and Y directions of a transducer capable of applying ink successively to different locations of said surface whereby to build up said symbol, said method comprising defining a limited number of key datum points within a matrix representing an area within which said symbol is to be formed, said key points lying on fixed points of said matrix, electrically storing information characteristic of said datum points by the co-ordinates thereof, electrically storing information representing a plurality of directions of movement within the plane of said matrix, said directions including at least the X and Y directions and inclined directions intermediate said X and Y directions, electrically storing information representing a plurality of different radii of curvature, including an infinite radius, providing means for controlling movement of said transducer in X and Y directions and selecting items of said stored information and feeding said items successively to said controlling means, said items comprising successively information on a starting key point, on the initial direction and, separately, the radius of curvature of the path to be followed to a second key point, then information of the initial direction and, separately, the radius of curvature of the path to be followed from said second key point, and so forth until completion of the formation of said symbol by said transducer by the resulting succession of smooth lines of various radii of curvature.

Claim 2

A method of reproducing a selected symbol on a writing surface from electrically stored information which is used to control deflection in X and Y directions of a transducer capable of applying ink successively to different locations of said surface whereby to build up said symbol, said method comprising defining a limited number of key datum points within a matrix representing an area within which said symbol is to be formed, said key points lying on fixed points of said matrix, electrically storing information characteristic of said datum points by the co-ordinates thereof, electrically storing information representing a plurality of directions of movement within the plane of said matrix, said directions including at least the X and Y directions and inclined directions intermediate said X and Y directions, electrically storing information representing a plurality of different radii of curvature, including an infinite radius, providing means for controlling movement of said transducer in X and Y directions and selecting items of said stored information and feeding said items successively to said controlling means, said items comprising successively information on a starting key point, on the initial direction and, separately, the radius of curvature of the path to be followed to a second key point, then information of the initial direction and, separately, the radius of curvature of the path to be followed from said second key point, and so forth until completion of the formation of said symbol by said transducer by the resulting succession of smooth lines of various radii of curvature.