Invention Grant
- Patent Title: Liquid discharge head, liquid discharge device, and liquid discharge apparatus
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Application No.: US15844831Application Date: 2017-12-18
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Publication No.: US10179452B2Publication Date: 2019-01-15
- Inventor: Masami Iwama , Yukio Otome , Takahiro Yoshida , Takakazu Kihira , Takayuki Nakai , Shiomi Andou , Isamu Suzuki , Ryuji Yoshida , Kanshi Abe , Junichi Iwata , Katsuya Ishii , Toshimichi Odaka
- Applicant: Masami Iwama , Yukio Otome , Takahiro Yoshida , Takakazu Kihira , Takayuki Nakai , Shiomi Andou , Isamu Suzuki , Ryuji Yoshida , Kanshi Abe , Junichi Iwata , Katsuya Ishii , Toshimichi Odaka
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2017-002053 20170110; JP2017-213790 20171106
- Main IPC: B41J2/175
- IPC: B41J2/175 ; B41J2/14 ; B41J2/17

Abstract:
A liquid discharge head includes a plurality of nozzles from which liquid is discharged, a plurality of individual-liquid-chambers communicating with the plurality of nozzles, respectively, a plurality of individual-drainage-channels communicating with the plurality of individual-liquid-chambers, respectively, a drainage-side common-liquid-chamber communicating with each of the plurality of individual-drainage-channels, a filter having filter holes and disposed between the plurality of individual-drainage-channels and the drainage-side common-liquid-chamber, and an intermediate-drainage-channel disposed between the filter and the plurality of individual-drainage-channels. The intermediate-drainage-channel faces the filter and communicates with two or more of the plurality of individual-drainage-channels. A cross-sectional area of the intermediate-drainage-channel is greater than a cross-sectional area of each of the plurality of individual-drainage-channels communicating with the intermediate-drainage-channel in a direction perpendicular to a direction of liquid flow.
Public/Granted literature
- US20180194135A1 LIQUID DISCHARGE HEAD, LIQUID DISCHARGE DEVICE, AND LIQUID DISCHARGE APPARATUS Public/Granted day:2018-07-12
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