US PATENT SUBCLASS 347 / 240
.~.~.~ Tone marking

Current as of: June, 1999
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347 /   HD   INCREMENTAL PRINTING OF SYMBOLIC INFORMATION

224  DF  LIGHT OR BEAM MARKING APPARATUS OR PROCESSES {2}
225  DF  .~ Scan of light {12}
233  DF  .~.~ Plural beam scan {9}
240.~.~.~ Tone marking

DEFINITION

Classification: 347/240

Tone marking:

(under subclass 233) Subject matter comprising means for producing a halftone or grey scale image on the record receiver by controlling the amount of light irradiating a given location on the record receiver.

SEE OR SEARCH CLASS

358, Facsimile,

298, and 455+ for grey level and halftone processing.