Title:
DEFECTIVE DETECTOR FOR SINGLE-SIDED CORRUGATED BOARD
Document Type and Number:
Japanese Patent JPS62279931
Kind Code:
A
Abstract:
A device for detecting any defects in single faced corrugated fiberboard while it is running. A light is irradiated to the corrugated surface of the fiberboard and the striped image is scanned by an image pick-up unit and the picture signal is converted to binary-coded signal to discriminate the number of stripes or corrugations. The number is counted by a counter and compared with a normal number by a microcoputer. If there is too large a difference between them, the scanned part is judged as defective. This device can detect any defects in a running web at a sufficiently high speed to follow the line speed of a corrugating machine.
Inventors:
TOKUNO MASATERU
SAWADA TETSUYA
MORI YASUHARU
YOSHIMOTO IKUO
SAWADA TETSUYA
MORI YASUHARU
YOSHIMOTO IKUO
Application Number:
JP12685186A
Publication Date:
December 04, 1987
Filing Date:
May 29, 1986
Export Citation:
Assignee:
RENGO CO LTD
International Classes:
B31F1/28; G01B11/30; B31F1/20; G01N21/89; (IPC1-7): B31F1/20; G01B11/30
Domestic Patent References:
| JPS5989808U | 1984-06-18 | |||
| JPS6119750U | 1986-02-05 | |||
| JPS5927263A | 1984-02-13 |
Attorney, Agent or Firm:
Bunji Kamada
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