Giang Vo Phones & Addresses
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12611 Willowood Ave, Garden Grove, CA 92840 (714) 703-1655
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Sun Valley, CA
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San Gabriel, CA
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Rosemead, CA
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Alhambra, CA
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Orange, CA
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12611 Willowood Ave, Garden Grove, CA 92840
Publications
Us Patents
Manifold Length In A Printhead
View pageUS Patent:
20220281222, Sep 8, 2022
Filed:
Mar 8, 2021
Appl. No.:
17/194869
Inventors:
Hiroshi Nishimura - West Hills CA, US
Giang Vo - Simi Valley CA, US
Cesar Hurtado - Simi Valley CA, US
Giang Vo - Simi Valley CA, US
Cesar Hurtado - Simi Valley CA, US
Assignee:
Ricoh Company, Ltd. - Tokyo
International Classification:
B41J 2/14
Abstract:
Printheads and manifolds within printheads. In one embodiment, a method comprises determining a resonant frequency of jetting channels for a printhead, and selecting a target length for a manifold fluidly coupled to the jetting channels such that resonant frequencies of the manifold differ from the resonant frequency of the jetting channels by a threshold amount.
Inkjet Head That Circulates Ink
View pageUS Patent:
20170182777, Jun 29, 2017
Filed:
Mar 14, 2017
Appl. No.:
15/458765
Inventors:
Hiroshi Nishimura - West Hills CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Assignee:
Ricoh Company, Ltd. - Tokyo
International Classification:
B41J 2/14
Abstract:
An inkjet head that is able to circulate ink. The inkjet head includes a diaphragm plate, a first restrictor plate, one or more chamber plates, a second restrictor plate, and an orifice plate. The orifice plate forms a plurality of nozzles. The chamber plates form a plurality of chambers corresponding with the nozzles, and also form a return manifold for receiving ink from the chambers when circulating the ink through the inkjet head. The diaphragm plate forms a diaphragm that seals the chambers. The first restrictor plate controls a flow of ink between the chambers and the return manifold to circulate the ink through the inkjet head. The second restrictor plate controls the flow of ink between a supply manifold and the chambers.
Inkjet Head That Circulates Ink
View pageUS Patent:
20160136955, May 19, 2016
Filed:
Jan 26, 2016
Appl. No.:
15/007102
Inventors:
Hiroshi Nishimura - West Hills CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Assignee:
Ricoh Company, Ltd. - Tokyo
International Classification:
B41J 2/14
Abstract:
An inkjet head that is able to circulate ink. The inkjet head includes a diaphragm plate, a first restrictor plate, one or more chamber plates, a second restrictor plate, and an orifice plate. The orifice plate forms a plurality of nozzles. The chamber plates form a plurality of chambers corresponding with the nozzles, and also form a return manifold for receiving ink from the chambers when circulating the ink through the inkjet head. The diaphragm plate forms a diaphragm that seals the chambers. The first restrictor plate controls a flow of ink between the chambers and the return manifold to circulate the ink through the inkjet head. The second restrictor plate controls the flow of ink between a supply manifold and the chambers.
Inkjet Head That Circulates Ink
View pageUS Patent:
20160136962, May 19, 2016
Filed:
Jan 26, 2016
Appl. No.:
15/007105
Inventors:
Hiroshi Nishimura - West Hills CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Assignee:
Ricoh Company, Ltd. - Tokyo
International Classification:
B41J 2/18
Abstract:
An inkjet head that is able to circulate ink. The inkjet head includes a diaphragm plate, a first restrictor plate, one or more chamber plates, a second restrictor plate, and an orifice plate. The orifice plate forms a plurality of nozzles. The chamber plates form a plurality of chambers corresponding with the nozzles, and also form a return manifold for receiving ink from the chambers when circulating the ink through the inkjet head. The diaphragm plate forms a diaphragm that seals the chambers. The first restrictor plate controls a flow of ink between the chambers and the return manifold to circulate the ink through the inkjet head. The second restrictor plate controls the flow of ink between a supply manifold and the chambers.
Inkjet Head That Circulates Ink
View pageUS Patent:
20150306875, Oct 29, 2015
Filed:
Apr 24, 2014
Appl. No.:
14/261370
Inventors:
Hiroshi Nishimura - West Hills CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Giang Vo - Simi Valley CA, US
Connor Matsumori - Camarillo CA, US
Assignee:
RICOH PRINTING SYSTEMS AMERICA, INC. - Simi Valley CA
International Classification:
B41J 2/14
Abstract:
An inkjet head that is able to circulate ink. The inkjet head includes a diaphragm plate, a first restrictor plate, one or more chamber plates, a second restrictor plate, and an orifice plate. The orifice plate forms a plurality of nozzles. The chamber plates form a plurality of chambers corresponding with the nozzles, and also form a return manifold for receiving ink from the chambers when circulating the ink through the inkjet head. The diaphragm plate forms a diaphragm that seals the chambers. The first restrictor plate controls a flow of ink between the chambers and the return manifold to circulate the ink through the inkjet head. The second restrictor plate controls the flow of ink between a supply manifold and the chambers.