Paper feed roller
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United States of America Patent
Stats
-
Nov 14, 2017
Issued Date -
N/A
app pub date -
Jan 15, 2016
filing date -
Jul 30, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A paper feed roller including an elastic layer composed of thermosetting polyurethane containing a plasticizer, wherein an amount of the plasticizer is within a range of 10 to 50 pts. mass based on 100 pts. mass of the thermosetting polyurethane, and a surface residual charge on the elastic layer is within a range of 90 to 170 V. The surface residual charge is a value determined by single-point measurement of a surface potential of the elastic layer. The measurement includes rotating the paper feed roller in a circumferential direction, electrifying the surface of the elastic layer with a corotron while rotating the paper feed roller, and measuring the surface potential at a center point on the paper feed roller in a roller axis direction in a position where the paper feed roller is rotated by 90 degrees from a position where the surface of the elastic layer is electrified.
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Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 14, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 14, 2029 |
