US PATENT SUBCLASS 430 / 407
.~.~ Reversal

Current as of: June, 1999
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430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

401  DF  POST IMAGING PROCESSING {16}
406  DF  .~ Positive {4}
407.~.~ Reversal

DEFINITION

Classification: 430/407

Reversal:

(under subclass 406) Processes wherein a negative image is produced which is treated (usually bleached away leaving undeveloped radiation sensitive material) to form a positive image.