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High Image Quality achieved through High Precision Measurements

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The high image quality of recent xerographic and direct marking products are achieved in part by accurately placing marks on the paper to microns precision at substrate speeds of up to 500 mm/sec. Accurate measurement techniques are required to develop products with this capability. Measurements of the positions of marks on paper to sub-micron precision can be achieved by printing and scanning specific test patterns. Even though scanner resolutions are tens of microns, the measurement precision is increased orders of magnitude by using various signal processing techniques and massive statistical averaging on the hundreds of megabytes of information. Examples include (1) measurement and adjustment of an LED bar imager to achieve uniform images, (2) measurement of beam positions and intensities due to imperfections in motor polygon assemblies and multiple beam images, and (3) signal processing techniques to compensate for imperfections in contact image sensors.
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Document Type: Research Article

Publication date: 2006-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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