US PATENT SUBCLASS 355 / 113
.~ Light boxes

Current as of: June, 1999
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355 /   HD   PHOTOCOPYING

78  DF  CONTACT PRINTING {15}
113.~ Light boxes {8}
114  DF  .~.~> Transfer of plural images
115  DF  .~.~> With exposure timing
116  DF  .~.~> Foot-operated platen or shutter
117  DF  .~.~> Cylindrical or curved exposure station
118  DF  .~.~> Divided or flexible platen
119  DF  .~.~> Indirect illumination
120  DF  .~.~> Platen-controlled illumination circuit
121  DF  .~.~> With shutter

DEFINITION

Classification: 355/113

(under subclass 78) Subject matter including structure for shielding or shading the light used for printing from the surrounding work area.

(1) Note. Usually the shielding or shading structure is a box enclosing the light source or the associated reflectors or lenses which light source lenses or reflector may or may not be claimed in the patents here classified. Structure for facilitating the use of natural light such as an opening in the box or mirror is classified here where the box is claimed. Structure in the form of a frame and constituting the top of a light box is classified in subclasses 122+ below where the box structure is not claimed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

67+, for illumination systems or details utilized in projection type copiers.

SEE OR SEARCH CLASS

352, Optics: Motion Pictures, appropriate subclasses, especially 198+, for projection light sources utilized in motion picture apparatus.