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Modeling of Tone Deviation during Switch-on Transient for Color Electrophotography

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Transient tone fluctuations after switch-on have been observed in color electrophotographic (EP) printers. This paper presents preliminary results of using regression analysis to model the behaviors and to identify the key contributing factors. A pilot study using off-the-shelf color EP printers revealed systematic deviation in tone reproduction during the switch-on transient under certain environmental conditions. It can be shown that the tone values reproduced during the switch-on transient are statistically different from the tone values reproduced during continuous printing after the switch-on transient has ended. In the mid-tone areas, the tone values of the first page printed after switch-on and the mean tone values of the pages printed during continuous printing can differ by four ΔE76 units under low temperature and humidity conditions. Analyses of experimental data showed that number of pages printed after switch-on and halftone levels are statistically significant factors in modeling tone deviation. The resulting regression model can accurately predict the switch-on transient deviation to within one ΔE76 unit based on cross-validation.

Document Type: Research Article

Publication date: 2009-01-01

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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