(under the class definition) Subject matter wherein a record-medium* has a first surface which faces toward a platen*, and the record-medium has a second surface which faces toward a type-face* when the type-face is at a print-point*, and wherein significance is attributed to imprinting character* symbols on the first surface of the record-medium.
(1) Note. The characters are usually in mirror image, and the record-medium is either transparent so as to be able to read the characters through the record-medium, or the record-medium is a "hectograph" master. See Glossary, section III, for further discussion of hectograph under terms ribbon* and transfer-medium*.
