Image forming apparatus and image forming method
AssigneeSharp Kabushiki Kaisha
InventorsYusuke Sakakibara, Kyohko Matsuda, Makoto Izumi
Life of this patent
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Abstract
Type and moisture content of a sheet of paper are determined with high accuracy for controlling an image forming condition, accordingly. A coping machine includes a transmitted-light measuring unit, a reflected-light measuring unit, a type determination unit configured to determine a type of a sheet of paper, a moisture content calculation unit configured to calculate a moisture content of the sheet of paper, based on the type of the sheet of paper determined by the type determination unit and the intensity of the light measured by the reflected-light measuring unit, and an image forming condition setting unit configured to set an image forming condition for the sheet of paper.
Claims18
An image forming apparatus comprising:
- a measuring unit configured to include at least one light source, to irradiate a sheet of paper with light emitted by the at least one light source, to receive the light transmitted through the sheet of paper or reflected by the sheet of paper, and to measure an intensity of the light that has been received;
- a type determination unit configured to determine a type of the sheet of paper, based on the intensity of the light measured by the measuring unit;
- a moisture content calculation unit configured to calculate a moisture content of the sheet of paper, based on the type of the sheet of paper determined by the type determination unit and the intensity of the light measured by the measuring unit;
- and
- a setting unit configured to set an image forming condition for the sheet of paper, based on the type of the sheet of paper determined by the type determination unit and the moisture content of the sheet of paper calculated by the moisture content calculation unit,
- the moisture content calculation unit being configured to calculate the moisture content by using a moisture content calculation model that has been calculated through a multivariate analysis.
An image forming method comprising:
- (a) irradiating light emitted by at least one light source onto a sheet of paper;
- (b) receiving light transmitted through the sheet of paper or reflected by the sheet of paper;
- (c) measuring an intensity of the light that has been received;
- (d) determining a type of the sheet of paper, based on the intensity of the light measured in the measuring;
- (e) calculating a moisture content of the sheet of paper based on the type of the sheet of paper determined in the determining and the intensity of the light measured in the measuring;
- and
- (f) setting an image forming condition for the sheet of paper based on the type of the sheet of paper determined in the determining and the moisture content of the sheet of paper calculated in the calculating,
- step (e) including calculating the moisture content by using a moisture content calculation model that has been calculated through a multivariate analysis.
Dependencies are inferred from the claim text.