Light source drive device, optical scanning device and image forming apparatus

US9155148B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9155148-B2
Application numberUS-201213473278-A
CountryUS
Kind codeB2
Filing dateMay 16, 2012
Priority dateMay 20, 2011
Publication dateOct 6, 2015
Grant dateOct 6, 2015

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

A light source drive device includes a first current source which provides a predetermined current to a light source corresponding to a predetermined light output, and a second current source which provides an overshoot current to the light source synchronized with the predetermined current. A processor is configured to set an overshoot time during which the overshoot current is provided to the light source. Further, an overshoot current is set which is applied to the light source. The overshoot time is set so that the overshoot time based on the rising of the predetermined current to when a light emission of the light source is detected.

First claim

Opening claim text (preview).

What is claimed is: 1. A light source drive device, comprising: a first current source which provides a predetermined current to a light source corresponding to a predetermined light output; a second current source which provides an overshoot current to the light source synchronized with the predetermined current of the first current source, the overshoot current being an additional current which increases the current applied to the light source; and a processor configured to…

Assignees

Inventors

Classifications

Patent family

Related publications grouped by family.

External sources

Next steps

Free tools are coming soon. Tell us what you want to track and we'll notify you.

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US9155148B2 cover?
A light source drive device includes a first current source which provides a predetermined current to a light source corresponding to a predetermined light output, and a second current source which provides an overshoot current to the light source synchronized with the predetermined current. A processor is configured to set an overshoot time during which the overshoot current is provided to the…
Who is the assignee on this patent?
Ishida Masaaki, Omori Atsufumi, Fujita Hayato, and 1 more
What technology area does this patent fall under?
Primary CPC classification G03B27/54. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Oct 06 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).