| 摘要 |
PURPOSE:To detect the longitudinal cracklings of a laver sheet, by dividing the bit data in a lateral direction into a plurality of bit data groups to detect the hole bit in the bit groups and making the counter corresponding to the bit group having the hole incremental. CONSTITUTION:A feed part 1, an image pickup part 2, a processing part 3 and a change-over part 4 are provided and the central part of the lower follower pulley 9 on the side of the image pickup part 2 is made thin while the central part of the upper follower pulley 9 on the side of the image pickup side 2 is made thick. In the image pickup part 2, fed lever 5 is illuminated by a lamp 11 and the serial image obtained by a line sensor 12 is supplied to the processing part 3 where the image subjected to the serial/parallel conversion is processed in the processing part 3 to be sent to a judge circuit 4. At each time when a hole bit is found, each counter is made incremental to store the length of a vertical hole and the vertical hole exceeding a predetermined length is detected to guide the laver 5 to an inferior product stock part 7. |
