Method for producing metal cylinder, method for producing substrate for electrophotographic photoreceptor, method for manufacturing electrophotographic photoreceptor, and metal slug for impact pressing
US10947614B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | May 2, 2019 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Jun 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/102
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for producing a metal cylinder includes preparing a metal slug having a surface adjusted so that the crystal grain diameter at a depth of 10 μm from the surface is smaller than that at a depth of 100 μm from the surface, and the crystal grain diameter at a depth of 10 μm from the surface is 30 μm or more and 120 μm or less; and forming a cylinder by impact pressing of the metal slug having the surface as a bottom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.