Image forming apparatus and image forming method
AssigneeRicoh Company, Ltd.
InventorYoshinori SHIRASAKI
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes: an image forming device configured to form a position detection pattern and a density detection pattern on a recording medium according to light emitted from an exposure device; a reading device configured to read the position detection pattern and the density detection pattern formed on the recording medium, the recording medium being conveyed in one of a plurality of orientations of the recording medium; and circuitry configured to correct a light intensity of the exposure device, based on the read position detection pattern and the read density detection pattern. For any one of the plurality of orientations of the recording medium, the position detection pattern is formed upstream of the density detection pattern in a sub-scanning direction.
Claims14
An image forming apparatus comprising:
- an image forming device configured to form a position detection pattern and a density detection pattern on a recording medium according to light emitted from an exposure device;
- a reading device configured to read the position detection pattern and the density detection pattern formed on the recording medium, the recording medium being conveyed in one of a plurality of orientations of the recording medium;
- and
- circuitry configured to correct a light intensity of the exposure device, based on the read position detection pattern and the read density detection pattern,
- wherein, for any one of the plurality of orientations of the recording medium, the position detection pattern is formed upstream of the density detection pattern in a sub-scanning direction.
A method for correcting a light intensity, comprising:
- forming a position detection pattern and a density detection pattern on a recording medium according to light emitted from an exposure device;
- reading the position detection pattern and the density detection pattern formed on the recording medium, the recording medium being conveyed in one of a plurality of orientations of the recording medium;
- and
- correcting a light intensity of the exposure device, based on the read position detection pattern and the read density detection pattern,
- wherein, for any one of the plurality of orientations of the recording medium, the position detection pattern is formed upstream of the density detection pattern in a sub-scanning direction.
An image forming apparatus comprising:
- image forming means for forming a position detection pattern and a density detection pattern on a recording medium according to light emitted from an exposure device;
- reading means for reading the position detection pattern and the density detection pattern formed on the recording medium, the recording medium being conveyed in one of a plurality of orientations of the recording medium;
- controlling means for correcting a light intensity of the exposure device, based on the read position detection pattern and the read density detection pattern,
- wherein, for any one of the plurality of orientations of the recording medium, the position detection pattern is formed upstream of the density detection pattern in a sub-scanning direction.
Dependencies are inferred from the claim text.