Image forming apparatus
US-2015370196-A1 · Dec 24, 2015 · US
Image forming apparatus and charging bias adjusting method therefor
US9606469B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9606469-B2 |
| Application number | US-201615155317-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 16, 2016 |
| Priority date | May 26, 2015 |
| Publication date | Mar 28, 2017 |
| Grant date | Mar 28, 2017 |
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Abstract
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An image forming apparatus includes a latent image bearer to rotate, an image forming unit including a charger and a developing device, a charge power supply to output a charging bias applied to a charger, a transfer device, a toner adhesion amount, and a controller. The controller causes the image forming unit to form a background fog pattern in a background area of the latent image bearer while changing a background potential, acquires toner adhesion amount values detected at different positions of the background fog pattern, having different potentials, sorts the toner adhesion amount values in an order of the background potential, determines a relation between the background potential and background fog amount based the toner adhesion amount values except any toner adhesion amount value out of monotonicity, and adjust the charging bias to an optimum value computed based on the determined relation.
First claim
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What is claimed is: 1. An image forming apparatus comprising: a latent image bearer to rotate; an image forming unit including: a charger to charge a surface of the latent image bearer; and a developing device including a developer bearer disposed facing the latent image bearer, the developing device to develop the latent image into a toner image; a charge power supply to output a charging bias applied to the charger; a transfer device to transfer the toner image from t…
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- G03G15/0266Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US9606469B2 cover?
- An image forming apparatus includes a latent image bearer to rotate, an image forming unit including a charger and a developing device, a charge power supply to output a charging bias applied to a charger, a transfer device, a toner adhesion amount, and a controller. The controller causes the image forming unit to form a background fog pattern in a background area of the latent image bearer whi…
- Who is the assignee on this patent?
- Izumi Saki, Sugiyama Hiroyuki, Hashimoto Shunichi, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification G03G15/0266. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 28 2017 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).