US PATENT SUBCLASS 399 / 180
.~.~.~ Having halftone screen


Current as of: June, 1999
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399 /   HD   ELECTROPHOTOGRAPHY

130  DF  IMAGE FORMATION {30}
177  DF  .~ Exposure {15}
178  DF  .~.~ Formation of color separation images {2}
180.~.~.~ Having halftone screen


DEFINITION

Classification: 399/180

Having halftone screen:

(under subclass 178) Subject matter wherein a means or method is provided that reproduces an original image in lines, segments, or dots by enabling an original to appear as if it were projected through a screen having a lattice of parallel lines at a specified angle.

(1) Note. Line or halftone images may be formed electrostatically (e.g., via a photoconductive member with a line or periodic dot pattern thereon).

(2) Note. Color images are frequently exposed onto a photoconductive member as line images formed at different specified angles for different colors.

OTHER CLASSIFICATION SYSTEMS:

ipc{2}G03G15/01, for producing multicolored copies.

epcG03G15/01D4H, for exposing and forming a halftone image.