Information processing system, learning device, and information processing method
US-11981138-B2 · May 14, 2024 · US
Printhead waveform voltage amplifier
US9862183B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9862183-B2 |
| Application number | US-201114359244-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 9, 2011 |
| Priority date | Dec 9, 2011 |
| Publication date | Jan 9, 2018 |
| Grant date | Jan 9, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A waveform amplifier for a piezoelectric liquid ejection element. The amplifier provides an amplified waveform to the liquid ejection element.
First claim
Opening claim text (preview).
What is claimed is: 1. A piezoelectric printing apparatus, comprising: a plurality of independently-controllable liquid ejection elements, each having a capacitive load; and a corresponding plurality of Class-G voltage amplifiers formed in one or more integrated circuits, each Class-G voltage amplifier to receive an input waveform for a particular one of the liquid ejection elements and provide to the particular ejection element in response an amplified waveform drive signal having at least one of its shape, height, and duration specific to the particular ejection element, the amplified waveform to cause the particular ejection element to eject an intended quantity of liquid, each Class-G voltage amplifier to recover at least a portion of a stored energy from the capacitive load of the particular ejection element during a decreasing voltage portion of the amplified waveform drive signal. 2. The apparatus of claim 1 , wherein the liquid ejection elements and the Class-G voltage amplifiers are disposed in a printhead of the apparatus. 3. The apparatus of claim 2 , wherein the liquid ejection elements and the Class-G voltage amplifiers are disposed on a same substrate in the printhead.
Assignees
Inventors
Classifications
controlling heads based on piezoelectric elements · CPC title
- B41J2/04541Primary
Specific driving circuit · CPC title
using a specific waveform · CPC title
Back shooter · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9862183B2 cover?
- A waveform amplifier for a piezoelectric liquid ejection element. The amplifier provides an amplified waveform to the liquid ejection element.
- Who is the assignee on this patent?
- Van Brocklin Andrew L, Hewlett Packard Development Co Lp
- What technology area does this patent fall under?
- Primary CPC classification B41J2/04541. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 09 2018 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).