Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1992-06-03
1993-10-19
Pendegrass, Joan H.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
359641, 359820, 372 34, H01S 304
Patent
active
052550150
ABSTRACT:
An athermally compensated printhead includes a laser diode having predetermined characteristics for generating a beam of light, a diode mount, cooling means, a collimator lens, and a len mount. The diode mount is formed of a predetermined material with a predetermined coefficient of thermal expansion for mounting the laser diode in the printhead. The cooling means is used to maintain the laser diode at a substantially constant operating temperature for longer life and to avoid wavelength changes. The collimator lens has characteristics which provide predetermined changes in focal length versus changes in ambient temperature over a predetermined temperature range. The len mount is formed of a predetermined material having a predetermined coefficient of thermal expansion for mounting the collimator lens adjacent a first major surface of the diode mount to receive the beam of light from the laser diode. The predetermined coefficient of thermal expansion of the material of the lens mount is chosen to compensate for the changes in focal length of the collimator lens versus changes in ambient temperature over the predetermined temperature range.
REFERENCES:
patent: 4297713 (1981-10-01), Ichikawa et al.
patent: 4498737 (1985-02-01), Doggett
patent: 4641023 (1987-02-01), Ando et al.
patent: 4720168 (1988-01-01), Kaneko
patent: 4815059 (1989-03-01), Nakayama et al.
patent: 4855987 (1989-08-01), Versluis
patent: 4861137 (1989-08-01), Nagata
patent: 4918702 (1990-04-01), Kimura
patent: 4948221 (1990-08-01), Yates
patent: 4961079 (1990-10-01), Owens et al.
patent: 4993801 (1991-02-01), Sarraf
patent: 5029335 (1991-07-01), Fisher et al.
Entz Steven F.
Jadrich Bradley S.
Noethen Mark L.
Eastman Kodak Company
Pendegrass Joan H.
Randall Robert L.
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