Invention Grant
US09399341B2 Liquid ejecting apparatus, head unit, integrated circuit device for driving capacitive load, and capacitive load driving circuit
有权
液体喷射装置,头单元,用于驱动电容性负载的集成电路装置和容性负载驱动电路
- Patent Title: Liquid ejecting apparatus, head unit, integrated circuit device for driving capacitive load, and capacitive load driving circuit
- Patent Title (中): 液体喷射装置,头单元,用于驱动电容性负载的集成电路装置和容性负载驱动电路
-
Application No.: US14829929Application Date: 2015-08-19
-
Publication No.: US09399341B2Publication Date: 2016-07-26
- Inventor: Tomokazu Yamada
- Applicant: Seiko Epson Corporation
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2014-237407 20141125
- Main IPC: B41J2/045
- IPC: B41J2/045

Abstract:
A liquid ejecting apparatus according to the invention includes: a modulation unit that generates a modulated signal which is obtained by pulse-modulating an original signal; a transistor that generates an amplified and modulated signal which is obtained by amplifying the modulated signal; a switching circuit; a low pass filter that generates a drive signal by demodulating the amplified and modulated signal; a feedback circuit that generates a feedback signal and feeds back the feedback signal to the modulation unit; a feedback terminal that electrically connects the modulation unit to the feedback circuit; a piezoelectric element that is displaced by the drive signal; a cavity; and a nozzle, in which a distance between the feedback terminal and a closest point to the feedback terminal in the modulation unit is shorter than a distance between the feedback terminal and a closest point to the feedback terminal in the switching circuit.
Public/Granted literature
Information query
IPC分类: