.~ With means to modify effect of pattern data {4}
68
.~.~ By inversion of pattern data
DEFINITION
Classification: 234/68
(under subclass 67) Device wherein the altering means is effective to cause nonselection of a cutting tool in response to sensing of a pattern indicium, and to cause selection of a cutting tool when no such indicium is sensed. [figure] [caption]Fig. 12 Inverse or complemental punching from pattern of Fig. 9 (subclass 68)
(1) Note. A device of this subclass produces the "inverse" or "physical complement" of the pattern field.
(2) Note. A device which produces the "code complement" of a code symbol is not classifiable here but in subclass 69 as an instance of code conversion, rather than inversion. The code complement of a code symbol may bear no physical resemblance to the "inverse" of the group of perforations which constitute the symbol.
(3) Note. Fig. 12 illustrates a card which has been punched with the inverse or complement of the indicia from the pattern card of Fig. 9.
