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Title:
DETECTION MECHANISM FOR PAPER FEEDING
Document Type and Number:
Japanese Patent JPS5446410
Kind Code:
A
Abstract:

PURPOSE: To prevent the trouble of a paper feeding system from occurring, and to make it possible to give the alarm of recording abnormality by enabling a facsimile equipment to give the alarm by detecting the abnormality of paper feeding.

CONSTITUTION: A sheet of paper 11 is carried intermittently by paper feeding roller 1 and pressure roller 5 and when protrusion 12 on the circumference of detection disc 9 rotating in the same direction as roller 5 passes through groove 13 of non- contact detector 10, a signal of one pulse is generated. Counter 14 starts counting motor driving pulse (ai) of roller 1 by receiving the 1st pulse (bi) and stops counting by the 2nd pulse (bi). While disc 9 is rotating normally, counter 14 counts pulse (ai) repeatedly and if paper feeding becomes abnormal owing to the slip between roller 1 and paper 11, no pulse (bi) is supplied to counter 14, so that when the number of counted pulses (ai) reaches a fixed value, signal (c) will be outputted to put buzzer 16 to work


Inventors:
SATOU KAZUKIYO
KOBAYASHI MASAYUKI
Application Number:
JP11220577A
Publication Date:
April 12, 1979
Filing Date:
September 20, 1977
Export Citation:
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Assignee:
NIPPON ELECTRIC CO
International Classes:
B65H7/06; B65H7/00; G03G15/00; G03G21/00; H04N1/00; H04N1/04; (IPC1-7): B65H7/00; G03G15/00; H04N1/04



 
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