Invention Grant
US07862135B2 Method of driving liquid ejecting head and liquid ejecting apparatus
有权
驱动液体喷射头和液体喷射装置的方法
- Patent Title: Method of driving liquid ejecting head and liquid ejecting apparatus
- Patent Title (中): 驱动液体喷射头和液体喷射装置的方法
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Application No.: US11923441Application Date: 2007-10-24
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Publication No.: US07862135B2Publication Date: 2011-01-04
- Inventor: Junhua Zhang
- Applicant: Junhua Zhang
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Workman Nydegger
- Priority: JP2006-290153 20061025
- Main IPC: B41J29/38
- IPC: B41J29/38

Abstract:
A method of driving a liquid ejecting head is provided. The liquid ejecting head varies pressure of a liquid in a pressure-generating chamber as a result of operating a pressure-generating element by supplying an ejection pulse, to eject liquid drops from a nozzle opening due to the pressure variation. The method includes performing a first contraction and performing a second contraction. In the first contraction, the liquid drops are ejected from the nozzle opening as a result of contracting the pressure-generating chamber. In the second contraction, the pressure-generating chamber is contracted so as to reduce withdrawal towards the pressure-generating chamber, of a meniscus after the ejection of the liquid drops A time from a start of the first contraction to a start of the second contraction is between ¼ to ¾ of a Helmholtz vibration period Tc of the pressure-generating chamber. A time of the first contraction is less than or equal to a natural vibration period Ta of the pressure-generating element.
Public/Granted literature
- US20080100653A1 METHOD OF DRIVING LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS Public/Granted day:2008-05-01
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