The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 27, 2021

Filed:

Oct. 12, 2018
Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventor:

Hiroshi Tominaga, Kashiwa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 29/00 (2006.01); B29C 48/00 (2019.01); B29C 48/25 (2019.01); B29D 23/00 (2006.01); G03G 15/16 (2006.01); G03G 15/00 (2006.01); B29C 48/09 (2019.01); B29K 23/00 (2006.01); B29K 27/00 (2006.01); B29K 67/00 (2006.01); B29K 71/00 (2006.01); B29K 77/00 (2006.01); B29K 81/00 (2006.01); B29L 29/00 (2006.01); B29K 101/12 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
B29D 29/00 (2013.01); B29C 48/001 (2019.02); B29C 48/002 (2019.02); B29C 48/0022 (2019.02); B29C 48/0023 (2019.02); B29C 48/25 (2019.02); B29D 23/001 (2013.01); G03G 15/161 (2013.01); G03G 15/162 (2013.01); B29C 48/09 (2019.02); B29C 2793/009 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2027/16 (2013.01); B29K 2067/00 (2013.01); B29K 2067/006 (2013.01); B29K 2071/00 (2013.01); B29K 2077/00 (2013.01); B29K 2081/04 (2013.01); B29K 2101/12 (2013.01); B29L 2029/00 (2013.01); B29L 2031/767 (2013.01); Y10T 428/13 (2015.01); Y10T 428/1352 (2015.01); Y10T 428/1397 (2015.01); Y10T 428/2933 (2015.01);
Abstract

A tube material is formed by continuously extruding a thermoplastic resin material in the shape of a cylinder that has a thickness of 100 μm and a circumferential length of 800 mm. After that, in a polishing process, the tube material is rubbed with a lapping tape of #2000 while being rotated in one direction at a fixed speed, so that circumferential stripes are formed on the outer circumferential surface of the tube material. Then, the circumferential stripes are thermally transferred by pressing the outer circumferential surface of the heated tube material against a mold surface that is finished in the shape of circumferential stripes by a thermal transfer process.


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