| 摘要 |
PROBLEM TO BE SOLVED: To prevent a slip of a detecting mark in a roller in an image forming device, and provide a transparent recording film excellent in carrying performance by arranging the optical position detecting detecting mark whose average surface roughness is specified in an end part of at least one surface of the transparent recording film. SOLUTION: An optical position detecting detecting mark 3 whose average surface roughness Ra is not less than 0.25μm is arranged in an end part of at least one surface. A toner fixing layer 2 is arranged on a transparent high polymer resin film base body 1, and the detecting mark 3 is arranged in an end part of the toner fixing layer 2. The toner fixing layer 2 may not be arranged in a position where the detecting mark 3 is arranged. When a value of the average surface roughness Ra is too large, there is the possibility that parts contacting with the detecting mark 3 rub against each other and are marred when transparent recording films are superposed on each other. There is the possibility of also marring a roller of a recording paper sheet carrying system inside of a copying machine. It is desirable that the average surface roughness Ra is set not more than 3.0μm from these points. |
