US PATENT SUBCLASS 347 / 254
.~.~.~ By varying dotting density

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


347 /   HD   INCREMENTAL PRINTING OF SYMBOLIC INFORMATION

224  DF  LIGHT OR BEAM MARKING APPARATUS OR PROCESSES {2}
225  DF  .~ Scan of light {12}
251  DF  .~.~ Tone marking {3}
254.~.~.~ By varying dotting density

DEFINITION

Classification: 347/254

By varying dotting density:

(under subclass 251) Subject matter wherein means for

providing a halftone or grey scale image includes means for changing number of pixels per unit length in the image to be formed on the record receiver.