Fuji Photo Film Company, Limited

Toshikazu Ishii

Takayuki Fujiwara

Hisashi Takahashi

Satoshi Mino

Kenji Ozawa

Yoshio Kawakami

A method of and apparatus for checking a wrapping state of a wrapped roll having end face covers by detecting the force required to press-fit a bushing into a cylindrical core tube and comparing the detected force with a threshold value which is based on the correlation between the force required to press-fit the bushing into the cylindrical core tube and the state of tucking of the end face covers.

Method and apparatus for checking the wrapping state of a roll

A wrapping state of a wrapped roll of a continuous sheet material which is rolled and wrapped with a sheet-like wrapping material is checked by taking an image of the wrapped roll placed in a predetermined position, and processing information on the image of the wrapped roll with respect to the density of the image, thereby detecting data on wrapping state of the wrapped roll, and determining whether the wrapping state of the wrapped roll is satisfactory on the basis of the detected data.

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Kanagawa, Japan

Toshikazu Ishii