Image forming apparatus
AssigneeToshiba Tec Kabushiki Kaisha
InventorYayoi DOI
Life of this patent
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Abstract
An image forming apparatus includes an image forming device that forms images in an image region on a sheet. An image fixing device includes heater elements disposed along a sheet-width direction. A controller is configured to identify a heater element that will overlap with an edge of the image region when a sheet is conveyed to the image fixing device. The controller calculates whether a shift of the image region by a shift amount less than a threshold would cause the heater element to not overlap. If so, the image forming device is controlled to form the image in a shifted image region and only those heater elements in the plurality of heater elements that overlap with the shifted image region are turned on when fixing the sheet if the image has been formed in the shifted image region.
Claims18
An image forming apparatus, comprising:
- an image forming device configured to form an image on a sheet in an image region;
- an image fixing device including a plurality of heater elements disposed along a first direction corresponding to a sheet-width direction of the sheet;
- and
- a controller configured to shrink the image region in the first direction based on a position of the image region relative to a position of the heater elements, and control the image forming device to form the shrunk image on the sheet.
An image forming apparatus, comprising:
- an image forming device configured to form an image on a sheet in an image region;
- an image fixing device including a plurality of heater elements disposed along a first direction corresponding to a sheet-width direction of the sheet;
- and
- a controller configured to shift the image region in the first direction based on a position of the image region relative to a position of the heater elements and control the image forming device to form the shifted image on the sheet.
An image forming method using an image forming apparatus including an image forming device configured to form an image on a sheet in an image region and an image fixing device including a plurality of heater elements disposed along a first direction corresponding to a sheet-width direction of the sheet, the image forming method comprising:
- shrinking the image region in the first direction a position of the image region relative to a position of the heater elements;
- and
- control the image forming device to form the shrunk image on the sheet.
Dependencies are inferred from the claim text.