US 7,321,356 B2
Time domain printing for electric paper
Raj B. Apte, Palo Alto, Calif. (US)
Assigned to Palo Alto Research Center Incorporated, Palo Alto, Calif. (US)
Filed on Dec. 15, 2004, as Appl. No. 11/12,970.
Prior Publication US 2006/0125778 A1, Jun. 15, 2006
Int. Cl. G09G 3/34 (2006.01)
U.S. Cl. 345—107  [399/130; 347/264; 355/400] 24 Claims
OG exemplary drawing
 
1. An electric paper printer comprising:
a two dimensional array of electric paper printing elements, each electrical paper printing element to output an electrical characteristic, the electric characteristic to set the color of a pixel on a sheet of electric paper;
an apparatus to create a relative motion at the time of marking between a sheet of electric paper and printing elements marking the electric paper; and,
circuitry to adjust the electrical characteristics of the two dimensional array of electric paper printer elements such that a particular electrical write characteristic approximately tracks a corresponding pixel of the electric paper for a duration of time that the corresponding pixel remains approximately adjacent the two dimensional array of electric paper printer elements.