B - Operations – Transporting – 41 – M
Patent
B - Operations, Transporting
41
M
41/4, 42/6
B41M 5/26 (2006.01) B26D 1/24 (2006.01) B41F 9/00 (2006.01) B41F 17/10 (2006.01) B41F 19/00 (2006.01) B41F 23/04 (2006.01) B41F 33/14 (2006.01)
Patent
CA 1291337
Abstract A strip or roll of thermal transfer type record- ing sheet (1) has a base film (1a) on one side of which a heat-soluble ink layer (1b) is formed for recording on paper or other surface by thermal transfer. An end mark or marks (3, 3A) to be detected optically for warning the user of the fact that the recording roll is being used up is formed adjacent one end of the strip by gravure printing with use of a light-reflective ink. The end mark or marks produced by gravure printing are of such constant thick- ness, and with the bounding edges so sharply defined, that they permit positive detection by an optical sensor. For the production of the end marks (3, 3A) by gravure printing, a web (S) of base film with the heat- soluble ink layer formed on one side thereof, with a width several times greater than that of each strip of recording sheet to be manufactured, is red through a printing unit (30) of a gravure printing section (16). A set of end marks printed by the printing unit on the web in juxtaposi- tion in its transverse direction are dried immediately, with the drying effect exerted only on the end marks. Then, while being still fed continuously, the web (S) is slitted at a slitting section (17) into the required nar- rower strips of recording sheet (1) each bearing one of the end marks. The separate strips of recording sheet (1) are subsequently wound into rolls (26)
566694
Imamura Hirokatsu
Umise Shigeki
Dai Nippon Insatsu Kabushiki Kaisha
Macrae & Co.
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