Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroshi Tomii
Life of this patent
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Abstract
To suppress an effect caused by a thermochromism phenomenon in which the color of an image whose color is to be measured changes depending on temperature and to accurately detect the color of the image whose color is to be measured. An image forming apparatus includes a color sensor that measures the color of an image fixed onto recording paper downstream of a fixing unit in a direction in which the recording paper is carried. The image forming apparatus corrects a result of the measurement of the color obtained by the color sensor in such a way as to suppress an effect due to the temperature of the recording paper at the time of the measurement of the color on the recording paper.
Claims8
An image forming apparatus comprising:
- an image forming unit configured to form a plurality of images whose colors are to be measured on recording paper using color materials;
- a fixing unit configured to fix the plurality of images whose colors are to be measured onto the recording paper by heating the plurality of images;
- a color measurement unit configured to measure the colors of the images fixed onto the recording paper downstream of the fixing unit in a direction in which the recording paper is carried;
- and
- a correction unit configured to correct results of the measurement of the colors obtained by the color measurement unit in such a way as to suppress an effect of changing color of the images whose colors are to be measured due to heat applied from the fixing unit.
Dependencies are inferred from the claim text.