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Gray Resolution Enhancement Anti-aliasing Technology (GRET) for High Speed Printing

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In order to improve the output image quality of binary text and graphics (even for binary information that are buried within a document which also has gray level information), a gray level resolution enhancement anti-aliasing method (GRET) that uses feature extraction and a rule-based decision matrix for edge enhancement (anti-aliasing) with multi-level (LED) output printing capability in a electrophotographic system is described. A pipelined architecture (with a conflict resolution priority-sorting scheme in the decision matrix) was used to enable all the decision operations to be performed at the same time (for efficient high-speed operation) and was implemented in an ASIC. Further, a scalable multiple chip architecture with overlapping pixels at the end of the image segments was created to enable enhancement operation for wider width and higher speed printing.

Document Type: Research Article

Publication date: January 1, 2000

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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