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United States of America Patent
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Issued Date -
Jan 25, 2018
app pub date -
Jul 10, 2017
filing date -
Jul 25, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An embossment formation area is formed on one surface of envelope paper. The embossment formation area is left-right symmetric with respect to a centerline including the centerline parallel to a paper feed direction (transport direction), and is formed rearward over a predetermined length from a leading end in the paper feed direction. An embossment has convexes that are equal in height to or higher than the thickness of transparent film attached to a window, that is, a thickness change portion. Even when many sheets of the envelope paper are stacked, the envelope paper can be fed without causing a double feed or a no-load feed.
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