Image forming apparatus with control of sheet carrier to compensate for sheet conveying distance
AssigneeCanon Kabushiki Kaisha
InventorTakuya Kamamura
Life of this patent
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Abstract
An image forming apparatus has an image former for forming an image on a sheet at a predetermined image-forming speed; a plurality of feeders; a carrier for carrying the sheet fed from either of the feeders to the image former; and a controller for controlling the carrier to suspend the sheet fed from either of the feeders at a first position upstream of the image former. The controller determines whether a subsequent sheet is suspended at a second position upstream of the first position and/or controls a speed at which the carrier carries the sheet, based on a feeder that feeds the sheet among the plurality of feeders and/or on the image-forming speed of the image former.
Claims16
An image forming apparatus comprising:
- an image former for forming an image on a sheet at a predetermined image-forming speed;
- a plurality of feeders, each positioned a different sheet-carrying distance from said image former;
- a carrier for feeding and guiding the sheet fed from each of the plurality of feeders to the image former;
- a controller for controlling the carrier to suspend feeding of the sheet fed from one of the plurality of feeders at a first position upstream of the image former;
- and
- a sensor for detecting the presence or absence of the sheet at a second position upstream of the first position,
- wherein the controller determines whether feeding a subsequent sheet is suspended at a third position between the first position and the second position based on an output signal from the sensor and controls a speed at which the carrier carries the subsequent sheet, based on at least one of which feeder feeds the sheet from among the plurality of feeders or on the image-forming speed of the image former.
Dependencies are inferred from the claim text.