Image forming apparatus for adjusting position and size of image
AssigneeCanon Kabushiki Kaisha
InventorsTeppei Nagata, Tomohito Nakagawa, Yukihiro Soeta
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Abstract
An image forming apparatus includes: an image forming unit configured to form an adjustment pattern on a sheet; a reading device provided further downstream than a fixing member in a conveyance direction, and configured to read the sheet on which the adjustment pattern has been fixed by the fixing member; and a processor configured to: detect a length, in the conveyance direction, of the sheet; and adjust a position, in the conveyance direction, and a size, in the conveyance direction, of an image to be formed on the sheet by the image forming unit, based on a reading result obtained by the reading device reading the sheet and the detected length.
Claims15
An image forming apparatus comprising:
- an image forming unit configured to form an adjustment pattern on a sheet;
- a fixing member configured to fix the adjustment pattern on the sheet by heating the adjustment pattern on the sheet;
- a conveyance roller configured to convey the sheet on which the adjustment pattern has been fixed by the fixing member;
- a reading device provided further downstream than the fixing member in a conveyance direction in which the conveyance roller conveys the sheet, and configured to read the sheet on which the adjustment pattern has been fixed by the fixing member, wherein the adjustment pattern includes a mark formed in a leading region of the sheet in the conveyance direction;
- a sensor provided further downstream than the fixing member in the conveyance direction, and configured to detect a length of the sheet in the conveyance direction;
- and
- a processor configured to:
- obtain a target length of the sheet in the conveyance direction based on setting information relating to the sheet;
- determine a first target distance from a leading end of the sheet to an image forming region in the conveyance direction based on the target length and the detected length of the sheet detected by the sensor;
- detect a first distance from the leading end of the sheet to the mark in the conveyance direction based on a reading result obtained by the reading device reading the sheet on which the adjustment pattern has been fixed;
- and
- adjust a position, in the conveyance direction, of an image to be formed by the image forming unit, based on the first target distance and the first distance.
Dependencies are inferred from the claim text.