Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorAkihito Yokote
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Abstract
An image forming apparatus includes an image forming unit configured to form an image on a sheet, a conveyance roller configured to convey the sheet along a conveyance path, a reading unit which is provided on the conveyance path and is configured to read a pattern formed on the sheet, and a controller. The controller is configured to control the image forming unit to form a first pattern, control the conveyance roller to convey a sheet having the first pattern formed thereon, control the reading unit to read the first pattern, generate first data based on a result of reading the first pattern, and control the image forming unit to form a user image and a second pattern, the second pattern being formed in a region on the sheet that is different from a region in which the user image is formed.
Claims7
An image forming apparatus, comprising:
- an image forming unit configured to form an image on a sheet;
- a conveyance roller configured to convey the sheet along a conveyance path;
- a reading unit which is provided on the conveyance path, and is configured to read a pattern formed on the sheet;
- and
- a controller configured to:
- control the image forming unit to form a first pattern;
- control the conveyance roller to convey a sheet having the first pattern formed thereon;
- control the reading unit to read the first pattern;
- generate first data based on a result of reading the first pattern;
- control the image forming unit to form a user image and a second pattern, the second pattern being formed in a region on the sheet that is different from a region in which the user image is formed;
- control the conveyance roller to convey the sheet having the second pattern formed thereon;
- control the reading unit to read the second pattern;
- generate second data based on a result of reading the second pattern;
- and
- control, based on the first data and the second data, a density of a user image to be formed by the image forming unit,
- wherein the controller is configured to generate the first data based on results of reading different positions of the first pattern,
- wherein the controller is configured to generate the second data based on results of reading different positions of the second pattern, and
- wherein the number of results of reading different positions of the first pattern, which are used to generate the first data, is greater than the number of results of reading different positions of the second pattern, which are used to generate the second data.
An image forming apparatus, comprising:
- an image forming unit configured to form an image on a sheet;
- a conveyance roller configured to convey the sheet along a conveyance path;
- a reading unit which is provided on the conveyance path, and is configured to read a pattern formed on the sheet;
- and
- a controller configured to:
- control the image forming unit to form a first pattern on a plurality of sheets;
- control the conveyance roller to convey the plurality of sheets;
- control the reading unit to read the first pattern;
- generate first data based on a result of reading the first pattern;
- control the image forming unit to form a user image and a second pattern, the second pattern being formed in a region on the sheet that is different from a region in which the user image is formed;
- control the conveyance roller to convey the sheet having the second pattern formed thereon;
- control the reading unit to read the second pattern;
- generate second data based on a result of reading the second pattern;
- and
- control, based on the first data and the second data, a density of a user image to be formed by the image forming unit.
Dependencies are inferred from the claim text.