Image forming apparatus capable of adjusting drive control of developer unit
AssigneeCanon Kabushiki Kaisha
InventorKazuhiko Okazawa
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Abstract
An image forming apparatus includes an image carrier for carrying an electrostatic image, a developer unit having a plurality of developers each for developing the electrostatic image on the image carrier, a drive circuit for driving the developer unit to stop a selected developer at a predetermined position facing the image carrier, a detection circuit for detecting the stop position of the developer, and an adjustment circuit for adjusting drive control of the developer unit by the drive circuit in accordance with a detection output from the detection circuit.
Claims16
An image forming apparatus comprising:
- an image carrier for carrying an electrostatic image;
- a developer unit having a plurality of developers each for developing the electrostatic image on said image carrier;
- drive means for driving said developer unit to stop a selected developer at a predetermined position facing said image carrier;
- detection means for detecting a stop position of the developer;
- and
- adjustment means for adjusting drive control of said developer unit by said drive means in accordance with a detection output from said detection means.
An image forming apparatus comprising:
- an image carrier for carrying an electrostatic image;
- a developer unit having a plurality of detachable developers;
- drive means for driving said developer unit to stop a selected developer at a developing position facing said image carrier;
- detection means for detecting a presence/absence of the developers of said developer unit;
- and
- adjustment means for adjusting drive control of said developer unit by said drive means in accordance with a detection output from said detection means.
An image forming apparatus comprising:
- an image carrier for carrying an electrostatic image;
- a developer unit having a plurality of developers each for developing the electrostatic image on said image carrier;
- drive means for driving said developer unit to stop a selected developer at a developing position facing said image carrier;
- detection means for detecting information associated with a weight of the developer;
- and
- adjustment means for adjusting drive control of said developer unit by said drive means in accordance with a detection output from said detection means.
Dependencies are inferred from the claim text.