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Application of Ink Jet Printer Model to Evaluate the Sharpness of Printed Images

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Image sharpness is an important factor for image quality evaluation. This paper investigates the effect of dot misregistration to the sharpness of ink jet image on various type of papers. The printed one-pixel line images are simulated using the proposed ink jet printer model. The model simulates each digital halftone dot in a high resolution grid using ink spread function and optical point spread function of paper. The variables in the experiment are the degree of dot misregistration and optical point spread function of paper. Fourier analysis is applied to those simulated images and the sharpness parameter is evaluated and compared. The results show that when dot misregistration is about 1/3 of dot diameter off its intent location, the MTF at 6 cy/mm is lower than 0.5 therefore poor sharpness is observed.
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Document Type: Research Article

Publication date: January 1, 2003

More about this publication?
  • 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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