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Volume: 19 | Article ID: art00078_2
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Application of Ink Jet Printer Model to Evaluate the Sharpness of Printed Images
Chawan Koopipat
  DOI :  10.2352/ISSN.2169-4451.2003.19.1.art00078_2  Published Online :  January 2003
Abstract

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.

Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/ISSN.2169-4451.2003.19.1.art00078_2
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Chawan Koopipat, "Application of Ink Jet Printer Model to Evaluate the Sharpness of Printed Images"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP19),  2003,  pp 773 - 776,  https://doi.org/10.2352/ISSN.2169-4451.2003.19.1.art00078_2

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Copyright © Society for Imaging Science and Technology 2003
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NIP & Digital Fabrication Conference
nip digi fabric conf
2169-4451
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2169-4451(20030101)2003:2L.773;1-
nip_v2003n2/splitsection78.xml
/ist/nipdf/2003/00002003/00000002/art00078
Articles
Application of Ink Jet Printer Model to Evaluate the Sharpness of Printed Images
KoopipatChawan
01012003
2003
2
773
776
2003
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.