Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2005-05-03
2005-05-03
Brooke, Michael S. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
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
Ishii Hiroshi
Kojoh Yoshiaki
Birch & Stewart Kolasch & Birch, LLP
Brooke Michael S.
LandOfFree
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.
Profile ID: LFUS-PAI-O-3393973