Time domain printing for electric paper
AssigneePalo Alto Research Center Incorporated
InventorRaj Apte
Life of this patent
Estimating the term…
Abstract
An improved method and system for printing electric paper is described. The method utilizes a system for keeping a writing characteristic, such as an electric charge or an electric current, constant with each pixel of an electric paper as the electric paper moves through a system. By keeping the electrical characteristic constant at each pixel, as the electric paper moves, the throughput of an electric paper printing system is significantly enhanced.
Claims23
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 a sheet of electric paper;
- an apparatus to create a relative motion between a sheet of electric paper and the two dimensional array of electric paper printing elements;
- 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.
A method of printing electric paper comprising:
- creating a relative motion between a sheet of electric paper and a two dimensional array of electric paper printing elements such that the electric paper moves at a predetermined velocity with respect to the two dimensional array of electric paper printing elements;
- and,
- adjusting the electrical characteristic across the two dimensional array of electric printer elements such that a particular electrical write characteristic that determines the color of a pixel on the electric paper approximately tracks a corresponding electric paper pixel for the duration of time that the corresponding electric paper pixel remains approximately adjacent the two dimensional array of electric paper printing element.
An electric paper printer to print on a piece of electric paper, the electric paper printer comprising:
- a two dimension array of electric paper writing elements to output a two dimensional array of electrical write characteristics;
- and,
- moving the two dimensional array of electric paper writing elements at the same speed as the electric paper.
Dependencies are inferred from the claim text.