Ultrasonic printing apparatus and method in which the phases of

Details Ultrasonic printing apparatus and method in which the phases of Ultrasonic printing apparatus and method in which the phases of

1995-11-14

1998-08-25

Berhane, Adolf

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 7, 347 13, 347 15, 347 89, B41J 204

Patent

active

057987793

ABSTRACT:
An ultrasonic printing method by which recording of a high resolution can be achieved. In the ultrasonic printing method, some or all of a plurality of ultrasonic oscillators are selectively driven in such phases that a difference in phase at a predetermined point between a reference ultrasonic wave from one of the selected ultrasonic oscillators and another ultrasonic wave from any other one of the selected ultrasonic oscillators is equal to or less than one-fourth a wavelength of the ultrasonic waves in a transmission medium for the ultrasonic waves from the selected ultrasonic waves to the predetermined point. The ultrasonic printing method can be applied to various printing apparatus for which recording of a high resolution is required.

REFERENCES:
patent: 4046073 (1977-09-01), Mitchell et al.
patent: 4600928 (1986-07-01), Braun et al.
patent: 4895158 (1990-01-01), Kawabuchi et al.
patent: 5200764 (1993-04-01), Nagasawa
patent: 5612723 (1997-03-01), Shimura et al.

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