Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1993-07-19
1996-07-02
Reinhart, Mark J.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347260, 382107, B41J 247
Patent
active
055327290
ABSTRACT:
A scanning motor includes a fixed shaft made of a ceramic material. The rotary sleeve is rotatably fitted onto the material, and a rotary sleeve also made of a ceramic fixed shaft so as to be rotatable about the fixed shaft. The motor further includes a thrust plate fixed to one end portion of the rotary sleeve. At least an abutting surface of the thrust plate faces an end surface of the fixed shaft. The motor further includes a driver for rotating the fixed sleeve. At least one of the end surface of the fixed shaft and the abutting surface of the thrust plate has the shape of at least a part of the surface of a sphere. A fixing member, made of a metal material, can be fixed around the rotary sleeve and a rotary polygonal mirror and a driving magnet can be fixed to the fixing member. During high speed rotation, the rotary sleeve is supported by the fixed shaft under a non-contact condition in the radial direction due to a film of air produced on the fitting surface therebetween, and under a point-contact condition in the thrust direction. As a result, power consumption is small even when the rotating polygonal mirror is rotated at a high speed and the biting phenomenon due to the invasion of dust and vibration is hardly present. Thus, precision high speed rotation can be maintained.
REFERENCES:
patent: 3121179 (1964-02-01), Macks
patent: 4726640 (1988-02-01), Iwama et al.
patent: 5018881 (1991-05-01), Asada
patent: 5019738 (1991-05-01), Weilbach et al.
patent: 5097164 (1992-03-01), Nakasugi et al.
patent: 5141338 (1992-08-01), Asada et al.
patent: 5144339 (1992-09-01), Ohashi et al.
patent: 5181783 (1993-01-01), Sherman et al.
patent: 5270737 (1993-12-01), Nakasugi et al.
Canon Kabushiki Kaisha
Reinhart Mark J.
LandOfFree
Scanner motor with ceramic sleeve bearing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scanner motor with ceramic sleeve bearing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanner motor with ceramic sleeve bearing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1510428