Driving method of piezoelectric elements, ink-jet head, and...

Incremental printing of symbolic information – Ink jet – Controller

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C347S068000

Reexamination Certificate

active

06886898

ABSTRACT:
A rise time and/or a fall time of a driving voltage are set to be not less than {fraction (1/20)} of a period of natural oscillation of an ink-jet head. This suppresses a driving voltage, an amount of generated heat, and dissipated power, which increase when there is a loss due to a resistor component of a charge/discharge system, such as wiring or switching elements, caused by a large current that is flown when the driving voltage rises or falls sharply. The rise time and/or fall time may be made not more than ⅓ of the period of natural oscillation. In this way, 80% or higher efficiency can be ensured for the oscillation energy of piezoelectric elements, which increases as the rise or fall of the driving voltage becomes sharper. Further, the rise time and/or fall time may be set in the vicinity of {fraction (1/20)} of the period of natural oscillation. In this way, the ejection energy of the piezoelectric elements can be saturated almost completely. As a result, less driving voltage, less heat, and less power are required to drive piezoelectric elements, which are used in ink-jet recording apparatuses and other types of apparatuses.

REFERENCES:
patent: 4879568 (1989-11-01), Bartky et al.
patent: 4887100 (1989-12-01), Michaelis et al.
patent: 4992808 (1991-02-01), Bartky et al.
patent: 5003679 (1991-04-01), Bartky et al.
patent: 5028936 (1991-07-01), Bartky et al.
patent: 6149258 (2000-11-01), Kimura
patent: 6155500 (2000-12-01), Takase
patent: 6206496 (2001-03-01), Ushioda
patent: 6-297708 (1994-10-01), None
patent: 6-305134 (1994-11-01), None
patent: 10-114063 (1998-05-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Driving method of piezoelectric elements, ink-jet head, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Driving method of piezoelectric elements, ink-jet head, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving method of piezoelectric elements, ink-jet head, and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3393973

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.