Imaging System with Non-Contact Charging Device and Controller thereof
AssigneeHewlett-Packard Development Company, L.P.
InventorsYasuyuki Ishii, Yoichi Yoshida, Koichiro Takashima
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Abstract
An imaging system includes a photoreceptor including a surface to form a static latent image, a non-contact charging device being spaced apart from the photoreceptor, a power source to apply a voltage to the charging device, and a controller. The charging device charges an image-forming portion of the surface of the photoreceptor during an image-forming period and charges a non-image-forming portion of the surface of the photoreceptor during a non-image-forming period. The controller changes a signal parameter of the voltage to be applied by the power source during the non-image-forming period, in order to adjust a current flowing from the charging device to the photoreceptor.
Claims15
An imaging system, comprising:
- a photoreceptor including a surface to form a static latent image;
- a non-contact charging device being spaced apart from the photoreceptor, the charging device to charge an image-forming portion of the surface of the photoreceptor during an image-forming period and to charge a non-image-forming portion of the surface of the photoreceptor during a non-image-forming period;
- a power source to apply a voltage to the charging device;
- and
- a controller to change a signal parameter of the voltage to be applied by the power source during the non-image-forming period, in order to adjust a current flowing from the charging device to the photoreceptor.
A controller for an imaging system including a photoreceptor having a surface to form a static latent image, a non-contact charging device to charge the surface of the photoreceptor, the charging device being spaced apart from the photoreceptor, the charging device to be operated during an image-forming period in which an image-forming portion of the surface of the photoreceptor is charged and during a non-image-forming period in which a non-image-forming portion of the surface of the photoreceptor is charged, and a power source to apply a voltage to the charging device, the controller to:
- determine a non-image-forming period;
- and
- change a signal parameter of the voltage to be applied by the power source during the non-image-forming period, in order to adjust a current flowing from the charging device to the photoreceptor.
Dependencies are inferred from the claim text.