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Load control device, image forming apparatus, and method of controlling load
US9130374B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9130374-B2 |
| Application number | US-201313796347-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2013 |
| Priority date | Mar 12, 2012 |
| Publication date | Sep 8, 2015 |
| Grant date | Sep 8, 2015 |
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Abstract
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A switch control unit detects a power supply voltage of a heater detected by a voltage detection unit, and switch is performed on a load state of the heater in a range from a first load state to a fourth load state when the detected power supply voltage falls into a predetermined first domain. On the other hand, the switch is performed on the load state that ranges from the first load state to the third load state when the detected power supply voltage falls into a predetermined second domain that is higher in voltage than the first domain. That is, when the power supply voltage is in the second domain that is higher in voltage than the first domain, a limitation is imposed on the switch to the fourth load state where a combined resistance value is the lowest among the first and fourth load states.
First claim
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What is claimed is: 1. A load control device that controls a load which is switchable to any one of n stage load states including a first load state, a second load state and so forth to an n-th load state of which resistance values are R 1 , R 2 , and so forth to Rn (n is an integer that is equal to or greater than 3 and R 1 >R 2 > . . . >Rn), respectively, comprising: a detection unit that detects a value relating to a power supply voltage of the load; and a switch control unit…
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Frequently asked questions
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- What does patent US9130374B2 cover?
- A switch control unit detects a power supply voltage of a heater detected by a voltage detection unit, and switch is performed on a load state of the heater in a range from a first load state to a fourth load state when the detected power supply voltage falls into a predetermined first domain. On the other hand, the switch is performed on the load state that ranges from the first load state to …
- Who is the assignee on this patent?
- Seiko Epson Corp
- What technology area does this patent fall under?
- Primary CPC classification B41J29/38. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 08 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).