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Patent Searching and Data


Title:
SHEET FEEDER
Document Type and Number:
Japanese Patent JPH03227834
Kind Code:
A
Abstract:

PURPOSE: To smoothly insert the sheets by detecting the sheets inserted between sheet carrying means and sheet pressing means before the sheets reach a predetermined position and retracting the pressing means automatically with the detection signal.

CONSTITUTION: Sheets S loaded on a sheet carrying tray 42 are pressed from above with a vertically movable pressing weight 55 and fed with a rotating sheet feed roller 52 from the lowermost sheet one by one in succession. When the sheets S are exhausted, a detection sensor 49 is rotated to detect the absence of the sheets S. When new sheets S are loaded on the tray 42, the detection sensor 49 is folded by the insertion of the sheets S before the sheets reach a predetermined position on the tray 42 and a signal is issued. The signal causes the pressing weight 55 to move up and retract from the top surface of the sheets S. Therefore, the sheet S is not bent upward by the contact with the weight 55 at the time of insertion.


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Inventors:
Sayama, Hideaki
Application Number:
JP1990000021799
Publication Date:
October 08, 1991
Filing Date:
January 31, 1990
Export Citation:
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Assignee:
CANON INC
International Classes:
B65H1/06; B65H1/24; B65H7/04; (IPC1-7): B65H1/06; B65H1/24; B65H7/04