Method to determine operating conditions of wavelength tunable laser diode and to control optical transmitter providing wavelength tunable laser diode
US-9184561-B2 · Nov 10, 2015 · US
Light emitting elements drive control device, droplets-deposited layer drying device, and image forming apparatus
US9502862B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9502862-B2 |
| Application number | US-201514847097-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 8, 2015 |
| Priority date | Feb 10, 2015 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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Abstract
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A light emitting elements drive control device includes: a detection unit that detects drive voltages and drive currents of a plurality of respective semiconductor light emitting elements arranged in a width direction of a recording medium; a calculation unit that calculates generated heat amounts of the respective semiconductor light emitting elements from heating-raised temperatures of the respective semiconductor light emitting elements determined based on the drive voltages and the drive currents detected by the detection unit, and calculates actual emission light quantities of the semiconductor light emitting elements from differences between the generated heat amounts of the semiconductor light emitting elements and input heat amounts corresponding to powers supplied to the semiconductor light emitting elements, respectively; and a correction unit that corrects differences between the actual emission light quantities of the semiconductor light emitting elements calculated by the calculation unit and required emission light quantities, respectively.
First claim
Opening claim text (preview).
What is claimed is: 1. A light emitting elements drive control device comprising: a detection unit that detects drive voltages and drive currents of a plurality of respective semiconductor light emitting elements arranged in a width direction of a recording medium; a calculation unit that calculates generated heat amounts of the respective semiconductor light emitting elements from heating-raised temperatures of the respective semiconductor light emitting elements determined bas…
Assignees
Inventors
Classifications
- H01S5/06808Primary
Electricity · mapped topic
Operations & Transport · mapped topic
Electricity · mapped topic
- H01S5/06804Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9502862B2 cover?
- A light emitting elements drive control device includes: a detection unit that detects drive voltages and drive currents of a plurality of respective semiconductor light emitting elements arranged in a width direction of a recording medium; a calculation unit that calculates generated heat amounts of the respective semiconductor light emitting elements from heating-raised temperatures of the re…
- Who is the assignee on this patent?
- Fuji Xerox Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01S5/06808. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 22 2016 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).