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Ink jet recording device and method of driving ink jet recording head

US8960833B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8960833-B2
Application numberUS-201313943961-A
CountryUS
Kind codeB2
Filing dateJul 17, 2013
Priority dateJul 18, 2012
Publication dateFeb 24, 2015
Grant dateFeb 24, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

An ink jet recording device includes an ink jet recording head including a pressure chamber communicating with an ink ejection orifice, and a piezoelectric actuator pressurizing ink in the pressure chamber. A drive signal generating unit generates a drive waveform having multiple drive pulses. A pulse supplying unit selects one or more of the drive pulses from the drive waveform depending on a size of an ink drop to be ejected and supplies the selected drive pulses to the piezoelectric actuator. The drive pulses in the drive waveform include ejection pulses to eject the ink drop from the orifice and a non-ejection pulse to suppress residual oscillations of the ink. The pulse supplying unit is configured to select one or more of the ejection pulses and the non-ejection pulse when an ink drop having a maximum size is to be ejected.

First claim

Opening claim text (preview).

What is claimed is: 1. An ink jet recording device comprising: an ink jet recording head including a pressure chamber that communicates with an ink ejection orifice, and a piezoelectric actuator that changes a pressure of ink in the pressure chamber; a drive signal generating unit that generates a drive waveform having multiple drive pulses; and a pulse supplying unit that selects one or more of the drive pulses from the drive waveform depending on a size of an ink drop to be…

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Frequently asked questions

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What does patent US8960833B2 cover?
An ink jet recording device includes an ink jet recording head including a pressure chamber communicating with an ink ejection orifice, and a piezoelectric actuator pressurizing ink in the pressure chamber. A drive signal generating unit generates a drive waveform having multiple drive pulses. A pulse supplying unit selects one or more of the drive pulses from the drive waveform depending on a …
Who is the assignee on this patent?
Satou Takashi, Iwata Shuusuke, Ricoh Co Ltd
What technology area does this patent fall under?
Primary CPC classification B41J2/04588. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).