Apparatus and method for transporting sheet paper

Details Apparatus and method for transporting sheet paper Apparatus and method for transporting sheet paper

1990-04-24

1991-12-10

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

By means to convey sheet

271270, 271193, 198747, 198736, 226137, 226139, 226158, 340674, B65H 512

Patent

active

050711130

ABSTRACT:
A sheet paper feed unit comprises an actuator, which is formed of a piezoelectric device, and an idling roller, and sheet paper is clamped between the actuator and idling roller and transported by the vibration of the piezoelectric device. A control unit determines information pertinent to a parameter specific to the sheet paper to be transported, and imparts a drive condition which complies with the information to the piezoelectric drive unit. The piezoelectric device is activated in the condition which complies with the paper specific parameter, whereby the sheet paper is transported at a stable speed.

REFERENCES:
patent: 3747921 (1973-07-01), Knappe
patent: 3929328 (1975-12-01), Knappe et al.
patent: 4605217 (1986-09-01), Goi
patent: 4917512 (1990-04-01), Mimura et al.
NE Report, Nikkei Electronics, No. 446, published May 2, 1988, pp. 74-75. This document is provided in Japanese. An English translation is unavailable to applicants' attorney.

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