Tubular metal body and electrophotographic photoreceptor
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United States of America Patent
Stats
-
Mar 2, 2021
Grant Date -
Oct 1, 2020
app pub date -
Jul 24, 2019
filing date -
Mar 26, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tubular metal body includes a tubular part having an opening at one end in an axis direction; and a bottom part disposed at another end of the tubular part in the axis direction. The ratio (Rz1/Rz2) of a surface roughness Rz1 of an outer peripheral surface of the bottom part to a surface roughness Rz2 of an outer peripheral surface of a center portion of the tubular part in the axis direction is in a range of 2 or more and 4000 or less. A Vickers hardness HV1 of the outer peripheral surface of the bottom part is 5 HV or more and 27 HV or less smaller than a Vickers hardness HV2 of the outer peripheral surface of the center portion of the tubular part in the axis direction.
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- G03G Class
- 0 % this patent is cited more than
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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 | Sep 2, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 2, 2032 |
