Paper feeding apparatus in a printer

Typewriting machines – Sheet or web – Including programmed-control-system for record-medium feed

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4005834, 364518, B41J 1992, H02D 516

Patent

active

045389330

ABSTRACT:
A paper feeding apparatus in a printer, wherein a sheet of paper placed on a rotary support member is fed by a predetermined distance through a corresponding angle of rotation of a drive motor which is energized by a drive circuit under control of a control device which applies a control signal to the drive circuit to give a predetermined angle of rotation to the drive motor and thereby effect a paper feeding cycle each time the control signal is applied. The control device includes control means for adapting the control signal so as to progressively increase the operating speed of the drive motor up to a predetermined level when the application of the control signal takes place more than a predetermined time interval after termination of the previous paper feeding cycle. When the application of the control signal takes place within the predetermined time interval, the control means adapts the control signal so as to cause the drive motor to operate at a constant speed equal to the predetermined level throughout the predetermined angle of rotation thereof.

REFERENCES:
patent: 4037705 (1977-07-01), Martin et al.
patent: 4066941 (1978-01-01), Foster
patent: 4225251 (1980-09-01), Klimek et al.
patent: 4349770 (1982-09-01), Ragen
patent: 4396307 (1983-08-01), Shah et al.
Semi-Automatic Paper-Insertion Apparatus, K. Hagiwara, IBM-TDB, vol. 25, No. 11A, Apr. 1983, pp. 5801-5802.

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