Developing cartridge having electrode
US-2024280923-A1 · Aug 22, 2024 · US
Image forming apparatus
US2016334732A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016334732-A1 |
| Application number | US-201615133964-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 20, 2016 |
| Priority date | May 11, 2015 |
| Publication date | Nov 17, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An image forming apparatus has an image carrier, a charger, a developing device, a voltage application unit, and a controller. The developing device includes a developing roller. The voltage application unit applies a voltage to the developing roller and to the charger. The controller controls the voltage application unit. The controller controls the voltage application unit such that a developing bias having an AC voltage superposed on a DC voltage is applied to the developing roller and a charging bias including at least a DC voltage and having superposed thereon a compensation AC voltage with an opposite phase to an AC voltage induced in the charger by the developing bias is applied to the charger.
First claim
Opening claim text (preview).
What is claimed is: 1 . An image forming apparatus, comprising: an image carrier on which an electrostatic latent image is formed; a charger that electrostatically charges the image carrier; a developing device including a developing roller that is arranged opposite the image carrier and that supplies toner to the image carrier, the developing device storing developer containing toner and carrier; a voltage application unit that applies a voltage to the developing roller and to the charger; and a controller that controls the voltage application unit, wherein the controller controls the voltage application unit such that a developing bias having an AC voltage superposed on a DC voltage is applied to the developing roller and a charging bias including at least a DC voltage and having superposed thereon a compensation AC voltage with an opposite phase to an AC voltage induced in the charger by the developing bias is applied to the charger. 2 . The image forming apparatus of claim 1 , wherein the compensation AC voltage has an amplitude that is 25% or more but 200% or less of an amplitude of the induced voltage. 3 . The image forming apparatus of claim 2 , wherein the compensation AC voltage has an amplitude that is 50% or more but 150% or less of an amplitude of the induced voltage. 4 . The image forming apparatus of claim 1 , wherein a surface of the image carrier is formed of a single layer of an organic photosensitive substance.
Assignees
Inventors
Classifications
- G03G15/065Primary
Arrangements for controlling the potential of the developing electrode · CPC title
Arrangements for controlling the amount of charge · CPC title
by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers · CPC title
- G03G15/0283Primary
Arrangements for supplying power to the sensitising device · CPC title
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Frequently asked questions
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- What does patent US2016334732A1 cover?
- An image forming apparatus has an image carrier, a charger, a developing device, a voltage application unit, and a controller. The developing device includes a developing roller. The voltage application unit applies a voltage to the developing roller and to the charger. The controller controls the voltage application unit. The controller controls the voltage application unit such that a develop…
- Who is the assignee on this patent?
- Kyocera Document Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification G03G15/065. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Nov 17 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).