Pressure adjuster, fixing device, and image forming apparatus
US-9221661-B2 · Dec 29, 2015 · US
Fixing device with mechanism capable of detecting pressure exerted between opposed components and image forming apparatus incorporating same
US8948639B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8948639-B2 |
| Application number | US-201213491661-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 8, 2012 |
| Priority date | Jun 30, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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 fixing device includes a pressurization member connected to a pressing rotary body to press the pressing rotary body against a fixing rotary body; a depressurization assembly interposed between the pressing rotary body and the pressurization member and movable between a reduced pressure position where the depressurization assembly causes the pressurization member to press the pressing rotary body against the fixing rotary body with reduced pressure therebetween and an enhanced pressure position where the depressurization assembly is free from pressure from the pressurization member to cause the pressurization member to press the pressing rotary body against the fixing rotary body with enhanced pressure therebetween; a positioner separatably contacting the depressurization assembly to immovably halt the depressurization assembly at the enhanced pressure position; and a position detector separatably contacting the depressurization assembly to detect the position of the depressurization assembly.
First claim
Opening claim text (preview).
What is claimed is: 1. A fixing device comprising: a fixing rotary body rotatable in a set direction of rotation; a pressing rotary body pressed against the fixing rotary body to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed; a pressurization member connected to the pressing rotary body to press the pressing rotary body against the fixing rotary body; a depressurization assembly installed at an end of the fixing device in a…
Assignees
Inventors
Classifications
Physics · mapped topic
- G03G15/2032Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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 US8948639B2 cover?
- A fixing device includes a pressurization member connected to a pressing rotary body to press the pressing rotary body against a fixing rotary body; a depressurization assembly interposed between the pressing rotary body and the pressurization member and movable between a reduced pressure position where the depressurization assembly causes the pressurization member to press the pressing rotary …
- Who is the assignee on this patent?
- Kawakami Yoshihiro, Ikeda Tamotsu, Tada Kaoru, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G03G15/2032. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 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).