Roller for fixing, manufacturing method therefor, and fixing device

A manufacturing method for a roller for image fixing, said method comprising steps of:

• inserting a shaft member into a one longitudinal end of a hollow cylindrical member;
• forming a hole portion penetrating said cylindrical member and said shaft member;
• forming a first countersink at a circumference of one end of said hole portion in an outerside of said cylindrical member;
• forming a second countersink at a circumference of the other end of said hole portion in an outerside of said cylindrical member;
• inserting a pin into said hole portion;
• and
• deforming opposite end portions of said pin so as to closely contact to said first and second countersink portions, respectively.

A fixing device comprising:

• a roller usable for fixing an unfixed toner image on a sheet, said roller including,
• a hollow cylindrical member,
• a shaft member inserted into one longitudinal end of said cylindrical member,
• a hole portion penetrating said cylindrical member and said shaft member,
• a first countersink formed at a circumference of one end of said hole portion in an outerside of said cylindrical member,
• a second countersink formed at a circumference of the other end of said hole portion in an outerside of said cylindrical member, and
• a pin inserted in said hole portion to fix said cylindrical member and said shaft member relative to each other, wherein said one and the other end portions of said pin are deformed so as to be closely contacted to said first and second countersink portions, respectively.