Developing device frame unit, developing device, process cartridge, and manufacturing method of the developing device frame unit
US-9213267-B2 · Dec 15, 2015 · US
Developing device and image forming apparatus incorporating same
US9958806B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9958806-B2 |
| Application number | US-201615346018-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 8, 2016 |
| Priority date | Nov 25, 2015 |
| Publication date | May 1, 2018 |
| Grant date | May 1, 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 developing device includes a toner bearer to rotate while bearing toner and a toner regulator including a bend on a free end side. The bend is disposed in contact with a surface of the toner bearer and defines a regulation nip to adjust an amount of the toner on the toner bearer. The toner regulator further includes an area having a water contact angle greater than or equal to 70 degrees. The area having the water contact angle includes, at least, a downstream end of the bend in a rotation direction of the toner bearer.
First claim
Opening claim text (preview).
What is claimed is: 1. A developing device comprising: a toner bearer to rotate while bearing toner; and a toner regulator including a bend on a free end side, the bend disposed in contact with a surface of the toner bearer and defining a regulation nip to adjust an amount of the toner on the toner bearer, the toner regulator including an area having a water contact angle greater than or equal to 70 degrees, the area including, at least, a downstream end of the bend in a rotation direction of the toner bearer, wherein the toner regulator including the bend disposed in contact with the surface of the toner bearer and said area having a water contact angle greater than or equal to 70 degrees are made of a same metal. 2. The developing device according to claim 1 , wherein: the toner regulator is shaped like a plate including the bend, and a bend angle of the bend is smaller than or equal to 40 degrees. 3. The developing device according to claim 1 , wherein the area having the water contact angle extends from a free end of the toner regulator for a length not greater than 5 mm in the rotation direction of the toner bearer. 4. The developing device according to claim 1 , further comprising a toner containing compartment to contain the toner, wherein a softening point of the toner is in a range of from 95 degrees to 120 degrees. 5. The developing device according to claim 1 , further comprising a toner containing compartment to contain the toner, wherein a volume average particle diameter of the toner is smaller than or equal to 7 μm. 6. An image forming apparatus comprising: an image bearer; and the developing device according to claim 1 to develop a latent image on the image bearer with the toner. 7. The developing device according to claim 1 , wherein: said area is an area of polished metal. 8. The developing device according to claim 1 , wherein: said area having a water contact angle greater than or equal to 70 degrees is limited to the downstream end of the bend in the rotation direction of the toner bearer.
Assignees
Inventors
Classifications
- G03G15/0812Primary
characterised by the developer regulating means, e.g. structure of doctor blade · 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 US9958806B2 cover?
- A developing device includes a toner bearer to rotate while bearing toner and a toner regulator including a bend on a free end side. The bend is disposed in contact with a surface of the toner bearer and defines a regulation nip to adjust an amount of the toner on the toner bearer. The toner regulator further includes an area having a water contact angle greater than or equal to 70 degrees. The…
- Who is the assignee on this patent?
- Tsuji Masato, Fujita Tetsumaru, Nagatomo Yuji, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification G03G15/0812. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 01 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).