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AssigneeCanon Kabushiki Kaisha
InventorsHiroaki Ogata, Miyuki Oki
Estimating the term…
An image forming apparatus, includes an image bearing device for bearing an image to be formed on a transferring material; a charger; an exposing device; a developing device; a transferring device, which transfers a developed image formed on the image bearing device to a transferring material; a current detector, which detects a transferring current flowing through the transferring device; and a controller. A voltage set in the developing device for an image forming area of the image bearing device is different from a voltage set in the developing device for the non-image-forming area of the image bearing device. The controller controls the voltage set in the developing portion, wherein a voltage for the non-image-forming area is controlled based on an output of the current detector.
An image forming apparatus, comprising:
An image forming apparatus, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
At least one of the recording member or the transfer member being rotatable during the transfer: with means for controlling the bias applied in…
Main transfer electrode: transfer roll
Electrography
Term ended 20 Feb 2023 (estimated)
1. Field of the Invention
The present invention relates to an image forming apparatus such as an electrophotographic apparatus, an electrostatic recording apparatus, etc.
2. Related Background Art
FIG. 1 shows the entire configuration of the image forming apparatus;
FIG. 2 shows the light portion potential (surface potential) Vd of an unexposed portion of a photosensitive drum, a developing bias V0 set for an image forming area, and a light portion potential VI of an exposed portion VI whose changes depending on an environment are shown by referring to the thickness of a plurality of CT layers;
FIG. 3 shows the relationship between the transferring current value Ia and the developing bias control value V in the developing bias control in a non-image-forming area;
(First Embodiment)
The first embodiment of the present invention is described by referring to the attached drawings.
The operations of the image forming apparatus such as the electrophotographic apparatus, the electrostatic recording apparatus, etc. are described below by referring to FIG. 1.