US PATENT SUBCLASS 355 / 126
.~.~.~ Adjustable parameters

Current as of: June, 1999
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355 /   HD   PHOTOCOPYING

78  DF  CONTACT PRINTING {15}
122  DF  .~ Frames {5}
125  DF  .~.~ With diffusing or masking (e.g., vignetting) {1}
126.~.~.~ Adjustable parameters

DEFINITION

Classification: 355/126

(under subclass 125) Subject matter wherein the blocking structure is movable over the transverse area of the light path to change the parameters of the opening in the light blocking structure, as for example to change the picture dimensions.