Fixer device for thermal printer

Incremental printing of symbolic information – Thermal marking apparatus or processes – Pre or post image recording treatment

Patent

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Details

347175, B41J 232

Patent

active

058672010

ABSTRACT:
A fixer device for a color thermal printer has at least a yellow fixing ultraviolet lamp and an inverter. The inverter controls ray emitting intensity of the yellow fixing lamp in accordance with a lamp control value after a thermal recording image is effected to a thermosensitive recording sheet. The yellow fixing lamp applies ultraviolet rays to the recording sheet for fixation. The fixer device includes an irradiance sensor which measures irradiance of the yellow fixing lamp. Difference data is calculated as a difference between target irradiance data and data of the measured irradiance from the irradiance sensor. An irradiance difference multiplier multiplies the irradiance difference data by a gain value, to determine a correcting value. An integrator adds the correcting value to the lamp control value to correct the lamp control value, the inverter controlling the ray emitting intensity of the yellow fixing lamp in accordance with the corrected lamp control value. The gain value is also adjusted in accordance with a number of times the yellow fixing lamp is used.

REFERENCES:
patent: 5486856 (1996-01-01), Katsuma et al.

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