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Analysis of Idle Time Effect on Color Consistency of Electrophotographic Printer

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This study analyzes idle time effect on a color electrophotographic (EP) printer. The idle time effect is defined as color or tone variations between the prints before- and immediately after- a printer having been idle for an extended period of time. In the study, 15 hours of idle time, which is regularly experienced in an office setting from 5pm to 8am, is investigated. Four off-the-shelf printers of the same model were placed in a temperature controlled environment with their engine calibration disabled. First, a preliminary experiment to know the inherent printer characteristics was conducted. With the preliminary experiments, the design of the experiments for the idle time effects was determined and total 39 sets of experiments were performed. More than 75% of the cases showed statistically significant tone differences, which are greater than 2 ΔE76 from paper white, for test pages printed before and after the idle time. It is also shown that these tone variations diminished once three pages have been printed after the idle time ends.

Document Type: Research Article

Publication date: January 1, 2009

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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