Image forming apparatus

An image forming apparatus configured to form a toner image on a recording material, comprising:

• an image forming unit configured to form a unfixed toner image on the recording material;
• a fixing unit configured to heat the recording material where the unfixed toner image is formed while conveying the recording material using a nip portion, and to fix the unfixed toner image on the recording material;
• and
• a control unit configured to perform control so that temperature of the fixing unit is maintained in target temperature,
• wherein the target temperature (Tn) of a n'th page in consecutive printing is set to the highest temperature of the target temperature (Tn) according to image density Dn at the n'th page, and corrected target temperatures (Tn+1′ to Tn+k′) obtained by correcting the target temperatures (Tn+1 to Tn+k) according to each of image densities (Dn+1 to Dn+k) at ((n+1) to (n+k))'th pages respectively, according to the number of pages from the n page of the pages ((n+1) to (n+k)) respectively, where integer k≧1.

An image forming apparatus configured to form a toner image on a recording material, comprising:

• an image forming unit configured to form a unfixed toner image on the recording material;
• a fixing unit configured to heat the recording material where the unfixed toner image is formed while conveying the recording material using a nip portion, and to fix the unfixed toner image on the recording material;
• and
• a control unit configured to perform control so that temperature of the fixing unit is maintained in target temperature,
• wherein the target temperature (Tn) of a n'th page in consecutive printing is set to lower temperature in a case where the highest image density of each of image densities (Dn to Dn+k) of (n to (n+k))'th pages respectively is a first image density than a case where the highest image density is a second image density higher than the first image density, where integer k≧1.