Image forming apparatus
US-2016041508-A1 · Feb 11, 2016 · US
Image forming apparatus and transfer bias control
US9835987B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9835987-B2 |
| Application number | US-201615065600-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2016 |
| Priority date | Mar 19, 2015 |
| Publication date | Dec 5, 2017 |
| Grant date | Dec 5, 2017 |
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Abstract
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An image forming apparatus includes an image bearer; a toner image forming device; an intermediate transferor; a primary transfer power source; a secondary transfer nip forming device; and a secondary transfer power source to output a secondary transfer bias. One of two peak values of the secondary transfer bias is a transfer peak value to provide a greater transfer-directional force to move toner from the intermediate transferor toward the recording medium in the secondary transfer nip. An absolute value of the transfer peak value is greater than an absolute value of the primary transfer bias.
First claim
Opening claim text (preview).
What is claimed is: 1. An image forming apparatus, comprising: an image bearer having a surface to bear a toner image; a toner image forming device configured to form the toner image on the surface of the image bearer; an intermediate transferor configured to contact the surface of the image bearer to form a primary transfer nip; a primary transfer power source configured to output a primary transfer bias including only a direct current voltage to the primary transfer nip to…
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Physics · mapped topic
- G03G15/1605Primary
Physics · mapped topic
- G03G15/162Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US9835987B2 cover?
- An image forming apparatus includes an image bearer; a toner image forming device; an intermediate transferor; a primary transfer power source; a secondary transfer nip forming device; and a secondary transfer power source to output a secondary transfer bias. One of two peak values of the secondary transfer bias is a transfer peak value to provide a greater transfer-directional force to move to…
- Who is the assignee on this patent?
- Sugiura Kenji, Haga Hiroyoshi, Ishii Hirokazu, and 9 more
- What technology area does this patent fall under?
- Primary CPC classification G03G15/1605. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 05 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).