Image forming apparatus with lubricant applicator
AssigneeHewlett-Packard Development Company, L.P.
InventorYasuyuki ISHII
Life of this patent
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Abstract
An image forming apparatus includes a lubricant application device to apply a lubricant to a photoreceptor surface of the image forming apparatus, and a lubricant residual amount detector to detect a residual amount of the lubricant. The residual amount of the lubricant is compared to a predetermined amount, and a charging device charges the photoreceptor surface by selectively applying a DC voltage of varying voltage to the photoreceptor surface in response to the comparison of the residual amount of the lubricant to the predetermined amount.
Claims15
An image forming apparatus comprising:
- a photoreceptor having a photoreceptor surface;
- a lubricant applicator to apply a lubricant to the photoreceptor surface;
- a charging device to charge the photoreceptor surface;
- and
- a lubricant residual amount detector to detect a residual amount of the lubricant,
- the charging device to charge the photoreceptor surface by applying a first voltage composed of a DC voltage to the photoreceptor surface in a case where the lubricant residual amount detector detects that the residual amount of the lubricant is greater than a predetermined amount, and
- the charging device to charge the photoreceptor surface by applying a second voltage composed of a DC voltage smaller than the first voltage to the photoreceptor surface in a case where the lubricant residual amount detector detects that the residual amount of the lubricant is equal to or less than the predetermined amount.
An image forming apparatus comprising:
- a photoreceptor having a photoreceptor surface;
- a lubricant applicator to apply a lubricant to the photoreceptor surface;
- a lubricant residual amount detector to detect a residual amount of the lubricant, and to compare the residual amount of the lubricant to a predetermined amount, and
- a charging device to charge the photoreceptor surface by selectively applying a DC voltage of varying voltage to the photoreceptor surface in response to comparing the residual amount of the lubricant to the predetermined amount.
An image forming apparatus comprising:
- a lubricant application device to apply a lubricant to a photoreceptor surface of the image forming apparatus;
- a lubricant residual amount detection means to detect a residual amount of the lubricant, and
- a charging means to charge the photoreceptor surface by selectively applying a DC voltage of varying voltage to the photoreceptor surface in response to a comparison of the residual amount of the lubricant to a predetermined amount,
- wherein in a case in which the lubricant residual amount is greater than the predetermined amount, the charging means to apply a first voltage composed of the DC voltage to the photoreceptor surface, and
- wherein in a case in which the residual amount of the lubricant is less than or equal to the predetermined amount, the charging means to apply a second voltage smaller than the first voltage.
Dependencies are inferred from the claim text.