Improvements introduced in the transmission of data in letter forms (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the transmission of data in forms on-letter.consisten in the provision for each of the forms established in the continuous band (1) and in correspondence with the area (7) intended for the location of the data of the addressee, of a piece of paper (8) of autocopying nature and that is impregnated by two chemical products color former and developer color that, before the effect of pressure on the part of the hammers of the printer, reaction between and determine the visible appearance of the corresponding characters. (Machine-translation by Google Translate, not legally binding)