Optical laser printer or plotter - subject laser beam to additional controlled offset deflection to improve resolution of output.

摘要

A laser printer/plotter has a solid state lower output (801) that deflected in a controlled manner to reproduce lines on the surface of a rotated photosensitive drum. The beam is modulated by an information system such that the lines may either be inclined or can be in the form of curves. Located between the laser and the drum an optical system includes an offset device (803) that introduces an additional small deflection dependant upon the image data. The device can be ultrasonic and coupled to a controller (500). ADVANTAGE - Improves line resolution without requiring improvement in precision of parts.