Model-Based Estimation of Heating Element Temperature Using Resistance Measurement

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The resistance of a thermal print head's heating element typically changes with temperature. This property is exploited to estimate the temperature of the element. The proposed method employs a model for the temperature rise when power is applied to the element in conjunction with a model for mapping the resistance to temperature. The parameters of the model are learned from the resistance measurements using a maximum likelihood estimator. An analytical expression is obtained for the bias in the estimated parameters. Results for synthetic and real data show that the proposed methods estimate the resistance-temperature mapping with a high degree of accuracy.

Document Type: Research Article

Publication date: January 1, 2005

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  • 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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