Invention Grant
- Patent Title: Developing roller and method of producing the same
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Application No.: US16398182Application Date: 2019-04-29
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Publication No.: US10712685B2Publication Date: 2020-07-14
- Inventor: Yuta Imase
- Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
- Applicant Address: JP Hyogo
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Hyogo
- Agency: JCIPRNET
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3c1a8148
- Main IPC: G03G15/08
- IPC: G03G15/08 ; B23K26/352 ; B23K26/402

Abstract:
There are provided a developing roller having no risks of the image density of formed images rapidly decreasing and the occurrence of an uneven density since a toner transportation amount does not decrease greatly even if image formation is repeated, and a method of producing the same. In a developing roller, a plurality of recesses are disposed on an outer circumferential surface of a roller main body so that a ratio PA/PC of a pitch PA in an axial direction on the outer circumferential surface to a pitch PC in a circumferential direction is set to a range exceeding 1.1. The production method includes a process of forming the recesses on the outer circumferential surface by laser processing.
Public/Granted literature
- US20190361371A1 DEVELOPING ROLLER AND METHOD OF PRODUCING THE SAME Public/Granted day:2019-11-28
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