Charging device and image forming apparatus including the same
US-9223243-B2 · Dec 29, 2015 · US
Image forming apparatus
US8977166B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8977166-B2 |
| Application number | US-201113232007-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 14, 2011 |
| Priority date | Oct 29, 2010 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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An image forming apparatus includes: a photosensitive drum configured to rotate about a rotational axis extending in an axial direction; and a charger that charges the photosensitive drum. The charger includes: a wire electrode; a grid electrode having a grid surface that faces the photosensitive drum between the wire electrode and the photosensitive drum; and a pair of shield electrodes, which faces each other with interposing the wire electrode therebetween, and which extends in a substantially orthogonal direction to the grid electrode. The grid surface is inclined to a second plane such that the grid electrode and the shield electrode come close to the photosensitive drum at a more downstream side in a rotating direction of the photosensitive drum than a first plane, wherein the first plane includes the wire electrode and the rotational axis of the photosensitive drum, and the second plane is orthogonal to the first plane.
First claim
Opening claim text (preview).
What is claimed is: 1. An image forming apparatus comprising: a photosensitive drum configured to rotate about a rotational axis extending in an axial direction; a plurality of exposure devices comprising an exposure head that is arranged adjacent to a surface of the photosensitive drum; and a charger arranged adjacent to the exposure head at an upstream side of the exposure head in a rotating direction of the photosensitive drum, wherein the charger comprises: a wire; a pa…
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- G03G15/0291Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8977166B2 cover?
- An image forming apparatus includes: a photosensitive drum configured to rotate about a rotational axis extending in an axial direction; and a charger that charges the photosensitive drum. The charger includes: a wire electrode; a grid electrode having a grid surface that faces the photosensitive drum between the wire electrode and the photosensitive drum; and a pair of shield electrodes, which…
- Who is the assignee on this patent?
- Matsuura Taizo, Brother Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification G03G15/0291. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 10 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).