US PATENT SUBCLASS 399 / 177
.~ Exposure

Current as of: June, 1999
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399 /   HD   ELECTROPHOTOGRAPHY

130  DF  IMAGE FORMATION {30}
177.~ Exposure {15}
178  DF  .~.~> Formation of color separation images {2}
181  DF  .~.~> Halftone image
182  DF  .~.~> Having image editing {3}
193  DF  .~.~> Binding offset
194  DF  .~.~> Composite
195  DF  .~.~> Generating paper feed signal
196  DF  .~.~> Variable magnification {4}
203  DF  .~.~> Selective or convertible
204  DF  .~.~> Two-up copying
205  DF  .~.~> Having reference position (relative positioning)
206  DF  .~.~> Slit exposure {8}
217  DF  .~.~> Full frame exposure (entire original at once)
218  DF  .~.~> Lens
219  DF  .~.~> Fiber optics
220  DF  .~.~> Light source {1}

DEFINITION

Classification: 399/177

Exposure:

(under subclass 130) Subject matter wherein a method or apparatus is provided that conducts radiant energy in the form of light directly from an original to an image-bearing member.

(1) Note. The use of the limitation "directly" excludes image formation systems in which an image of an original is detected and converted to electrical signals which are subsequently utilized to generate further illumination signals to optically form an image of the original on the medium. This excluded subject matter may be found, for example, in Class 346, subclasses 74.2+, and in Class 358, subclasses 300 and 301.

(2) Note. Exposure of a charged photoconductive member to a pattern of light results in an electrostatic latent image.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for control of exposure.

OTHER CLASSIFICATION SYSTEMS:

ipc{2}G03G15/04, for exposing (i.e., imagewise exposure by optically projecting the original image on a photoconductive recording material).

jpofiG03G15/04, for exposing (i.e., imagewise exposure projecting the original image on a recording material). G03G15/04 111, for using the characteristics of the optical system. epcG03G15/04, for exposing ( i.e., transmitting the information given by the original image to the recording material; electron beam tubes for electrography for transferring a charge pattern through the face platen to the recording material).