Sheet feeding or delivering – Feeding – By means to convey sheet
Patent
1990-05-21
1991-12-31
Schacher, Richard A.
Sheet feeding or delivering
Feeding
By means to convey sheet
271111, B65H 714
Patent
active
050765671
ABSTRACT:
A medium transferring apparatus which makes use of a preliminary transference stage prior to a main transference stage at the time of transference of a medium such as a sheet of paper. In the former stage, an initial parameter setting operation is performed so that a desired amount of feeding of the medium and control parameters for achieving this feed amount, including the amount of control rotation, rotational speed and acceleration on starting of a transferring motor are automatically determined on the basis of external factors used as parameters such as the number of operations of the transferring apparatus, the type of the medium and desired environmental factors of use of the apparatus including temperature and humidity. In the initial parameter setting operation, an unknown friction coefficient of the medium is determined. In the main transference stage, data thereby obtained enables the medium to be transferred with constant accuracy no matter what the thickness, difference in level, friction coefficient of the medium, as well as environmental factors.
REFERENCES:
patent: 4030722 (1977-06-01), Irvine
patent: 4310153 (1982-01-01), Kikuchi
patent: 4331328 (1982-05-01), Fasig
patent: 4787620 (1988-11-01), Goldkuhle
Kawauchi Masataka
Sasaki Naoya
Hitachi , Ltd.
Schacher Richard A,.
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