Electrographic tactile image printing system
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United States of America Patent
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Jul 8, 2014
Grant Date -
Feb 27, 2014
app pub date -
Aug 22, 2012
filing date -
Aug 22, 2012
priority date (Note) -
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Abstract
An electrographic printing system for forming a tactile printed image on a receiver medium, comprising an image processing path, one or more printing modules and a fixing subsystem. The image processing path provides a sequence of image patterns including a plurality of annular shapes having associated inner and outer sizes, the inner and outer sizes of the annular shapes varying in a monotonic sequence. The printing modules are controlled to form a sequence of toner particle images corresponding to the sequence of image patterns, and to sequentially transfer the sequence of toner particle images in register onto the receiver medium such that the annular shapes in the toner particle images overlap to form a tactile image feature having a hollow core. The fixing subsystem is used to permanently attach the transferred toner particle images to the receiver medium.
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