Electrostatic charge information reproducing method

Details Electrostatic charge information reproducing method Electrostatic charge information reproducing method

1994-09-12

1998-04-14

Fuller, Benjamin R.

Incremental printing of symbolic information

Electric marking apparatus or processes

347139, 347140, B41J 2385, G01D 1506, G03G 1304

Patent

active

057398348

ABSTRACT:
A master electric charge retaining medium 2 having electrostatic charge information recorded thereon is disposed face-to-face with a reproductive electric charge retaining medium 3, and a voltage is applied between the respective electrodes of the two electric charge retaining media to induce an electric discharge, thereby inversely reproducing the electrostatic charge information on the reproductive electric charge retaining medium, as shown in FIG. 2(b). It is possible to effect the reproduction any number of times while preventing the lowering in the contrast of the master electric charge retaining medium by making the electrostatic capacity of the master electric charge retaining medium adequately larger than the electrostatic capacity of the reproductive electric charge retaining medium. In addition, a master electric charge retaining medium 2 having an insulating layer with a relatively high softening point and a reproductive electric charge retaining medium 4 having a thermosoftening resin layer 4a are disposed face-to-face with each other to induce electric charge on the thermosoftening resin layer in correspondence to the electrostatic charge image on the master electric charge retaining medium 2, and the thermosoftening resin layer is softened by heating to form a dimple pattern thereon, thereby enabling transfer development to be effected any number of times without leaking the electrostatic charge.

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