Invention Grant
US07934786B2 Liquid ejecting apparatus and method of driving liquid ejecting head
有权
液体喷射装置和驱动液体喷射头的方法
- Patent Title: Liquid ejecting apparatus and method of driving liquid ejecting head
- Patent Title (中): 液体喷射装置和驱动液体喷射头的方法
-
Application No.: US12410718Application Date: 2009-03-25
-
Publication No.: US07934786B2Publication Date: 2011-05-03
- Inventor: Kinya Ozawa
- Applicant: Kinya Ozawa
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Workman Nydegger
- Priority: JP2008-084659 20080327
- Main IPC: B41J29/38
- IPC: B41J29/38

Abstract:
A liquid ejecting apparatus includes a liquid ejecting head including pressure generation chambers communicating with nozzle openings for ejecting a liquid and pressure generation units which cause pressure variations in the pressure generation chambers. A driving unit supplies, to the pressure generation units, a driving signal including an expansion element for expanding the pressure generation chambers. A contraction element contracts the pressure generation chambers and a re-expansion element expands the pressure generation chambers before the liquid is ejected from the nozzle openings by the contraction element. The re-expansion element includes a primary expansion element at the contraction element side that expands the pressure generation chambers. A secondary expansion element has at least a variation portion having a voltage variation ratio different from a voltage variation ratio of the primary expansion element in continuation to the primary expansion element and expands the pressure generation chambers.
Public/Granted literature
- US20090244187A1 LIQUID EJECTING APPARATUS AND METHOD OF DRIVING LIQUID EJECTING HEAD Public/Granted day:2009-10-01
Information query
IPC分类: