Scanned marking of workpieces

Details Scanned marking of workpieces Scanned marking of workpieces

1995-12-06

2000-03-14

Tran, Huan

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347134, 347256, 347259, 3461074, 3461075, 3461076, 359297, 359299, B41J 2435

Patent

active

060379685

ABSTRACT:
A technique for marking pixels on workpieces by routing a scanned beam to different marking stations to mark individual pixels on the workpieces. A diffractive scan lens focuses the beam. A mark is formed on a workpiece by producing the mark and curing the mark. Angular position of a scanning mirror in a raster scanner is determined by moving a beam, reflected from the scanner, across rulings on an optical element during scanning. A print head for printing spots on a surface of a workpiece has a walled, internally pressurized chamber and structure for causing an inked web to conform to a contour of the chamber wall and to be pulled along the chamber wall. A print head has a compliant-walled, internally pressurized chamber. A print head has a chamber having a low-coefficient of friction coating. Two workpieces may be marked at two marking stations by two-directional scanning.

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