| 摘要 |
<P>PROBLEM TO BE SOLVED: To confirm that an index for classification is formed on a desired print medium side, and to detect an abnormality of a mechanism for forming the index. <P>SOLUTION: The index forming mechanism is arranged at the periphery of a conveying passage of a print medium, and includes an index forming part for forming a colored area as the index of a classified part at the side of the print medium. The index forming mechanism includes a detection part for detecting the index on the side of the conveyed print medium. The detection part includes a first light emission part which emits light on the print medium side, and a first light receiving part which receives the reflected light of the emitted light from the print medium side. <P>COPYRIGHT: (C)2012,JPO&INPIT |
