Patent ID: 9335679
Filing Date: 2016-05-10
CPC Classification: G03G

Claim Text:
1. An image forming apparatus including: an image forming section configured to form a toner image based on image data and transfer the formed toner image to a recording medium; a fixing section configured to heat the recording medium to which the toner image has been transferred in the image forming section to fix the toner image; an image analyzing section configured to extract, from the image data of the image to be formed in the image forming section, at least one of a density value and a size value of each of imaging objects included in the image; a temperature determining section configured to determine a minimum fixing temperature of the fixing section for the recording medium transferred with a page image which is an image corresponding to one page of the recording medium to be formed in the image forming section, the minimum fixing temperature being determined based on the extracted density values or size values of the imaging objects included in the page image, the temperature determining section is configured to perform, based on the density value or the size value of each of the imaging objects in the page image, at least one of setting the minimum fixing temperature to be lower when a highest one of the density values is lower than when the highest one of the density values is higher, and setting the minimum fixing temperature to be lower when a largest one of the size values is smaller than when the largest one of the size values is larger; and a gamma correcting processing section configured to apply gamma correction to the density values of the imaging objects extracted by the image analyzing section, wherein the image forming section is configured to form the toner image based on post gamma correction image data, and the temperature determining section is configured to determine the minimum fixing temperature for the recording medium with the page image by use of a post gamma correction density value.