Flexible arm piezoelectric lens mover

A raster output scanner, comprising:

• a laser source producing a laser beam;
• a rotating, multi-faceted polygon;
• and
• a piezoelectric-actuated lens mover assembly disposed between said laser source and said rotating, multi-faceted polygon, said piezoelectric-actuated lens mover assembly having a mounting frame, a piezoelectric element connected to said mounting frame, flexible arms, a lens mount, and a lens attached to said lens mount, wherein said flexible arms flex in a direction of motion of the piezoelectric element, wherein said flexible arms are substantially inflexible in another direction, wherein said flexible arms are mounted such that said flexible arms bias said lens mount toward said piezoelectric element, and wherein said lens directs said laser beam toward said multi-faceted polygon.

A laser printer, comprising:

• a charged photoreceptor moving in a process direction;
• a controller producing video data signals;
• and
• a raster output scanner receiving said video data signals, said raster output scanner for exposing said photoreceptor such that a latent image representation of said video data signals is produced on said photoreceptor, said raster output scanner having:
• a laser source producing a laser beam that is modulated in accordance with said video data signals;
• a rotating, multi-faceted polygon for reflecting said laser beam as a scan line on said photoreceptor so as to produce a plurality of output scan lines;
• and
• a piezoelectric-actuated lens mover assembly disposed between said laser source and said rotating, multi-faceted polygon, said piezoelectric-actuated lens mover assembly having a mounting frame, a piezoelectric element connected to said mounting frame, flexible arms, a lens mount, and a lens attached to said lens mount, wherein said flexible arms flex in a direction of motion of the piezoelectric element, wherein said flexible arms are substantially inflexible in another direction, wherein said flexible arm assembly arms are mounted such that said flexible arms bias said lens mount toward said piezoelectric element, and wherein said lens directs said laser beam toward said polygon;
• wherein a position of said scan line on said photoreceptor depends upon a position of said lens.