METHOD AND APPARATUS FOR INK JET PRINTING

摘要

In a method and apparatus for expelling ink from an open ended capillary (20) to produce high resolution printing, a laser beam (26) causes the ink to vapourise, along the length of the capillary at a region spaced from the open end thereof. A small volume of ink is thereby expelled from the open end of the capillary tube onto the paper (38). The beam (26) is adjusted so as to increase or decrease the volume of ink expelled. A plurality of such capillaries can be used in a printing head, laser modulation being employed for scanning these arrays. Scanning is achieved by means of a moveable reflecting or refracting facet (28).