Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to attribute – absence or presence of work
Patent
1992-10-30
1995-08-15
Jones, W. Gary
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to attribute, absence or presence of work
118672, 118674, 118712, 118 38, 118 46, 118 68, 156259, 101247, B05C 1100
Patent
active
054415675
ABSTRACT:
A strip or roll of thermal transfer type recording sheet has a base film on one side of which a hot-melt ink layer is formed for recording on paper or other surface by thermal transfer. An end mark or marks to be detected optically for warning the user of the fact that the recording roll is being used up is/are 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 thickness, and with the bounding edges so sharply defined, that they permit positive detection by an optical sensor.
For the production of the end marks by gravure printing, a web of base film with the hot-melt 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 fed through a printing unit of a gravure printing section. A set of end marks printed by the printing unit on the web in juxtaposition 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 is slit at a slitting section into the required narrower strips of recording sheet each bearing one of the end marks. The separate strips of recording sheet are subsequently wound into rolls.
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Imamura Hirokatsu
Umise Shigeki
Dai Nippon Insatsu Kabushiki Kaisha
De Simone Mark
Jones W. Gary
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