| 摘要 |
PROBLEM TO BE SOLVED: To provide a cover positioning mechanism for a bookbinding apparatus which can accurately position a cover by a simple mechanism and can automate a regulation of a position for positioning the cover at a cover size changing time. SOLUTION: When a cover pressurizing conveying belt 21 is driven, the cover 17 is sent to a nipping unit 5. When a cover rear end detecting sensor 29 detects a rear end of the cover 17, the belt 21 is stopped. Then, after a back header direction of the cover 17 is positioned by closing a cover back header direction guide 30 at a set quantity, a cover top and bottom direction reference stopper 25 is raised, and the belt 21 is driven in a reverse direction. Then, the cover 17 is sent in the reverse direction, and the rear end of the cover 17 is bumped against the stopper 25. Thereafter, when the belt 21 is driven by a numeric value amount input from an input means of a control circuit in a forward direction, the rear end of the cover 17 is moved to a position separate at a distance to be input by the numeric value from the position of the stopper 25, and hence the cover can be positioned. COPYRIGHT: (C)2004,JPO
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