An image forming apparatus comprising: a transfer belt; an image forming section configured to form a toner image on the transfer belt; a first cleaning section configured to perform cleaning for removing toner on the transfer belt; a second cleaning section having a cleaning performance greater than a cleaning performance of the first cleaning section, and configured to perform cleaning for removing the toner on the transfer belt at a position on an upstream side of the first cleaning section in a movement direction of the transfer belt; a determination section configured to determine a necessity of formation of a high-coverage patch having a coverage exceeding a limit of the cleaning performance of the first cleaning section on a basis of job information relating to a print job; an image formation control section configured to control the image forming section to form the high-coverage patch on the transfer belt when formation of the high-coverage patch is necessary; and a cleaning control section configured to control the second cleaning section to execute the cleaning at a time when the high-coverage patch on the transfer belt passes over a position of the second cleaning section, wherein the job information used for determination of the determination section includes information on whether a sheet used in the print job is a continuous sheet, and information on whether a coverage rate in the print job is lower than a predetermined value, wherein the high-coverage patch includes a high-coverage part having a coverage exceeding the limit of the cleaning performance of the first cleaning section, and a low-coverage part (501F,501R) located at a front end and a rear end of the high-coverage part and having a coverage equal to or lower than the limit of the cleaning performance of the first cleaning section, and wherein the cleaning control section is configured to start the cleaning of the second cleaning section at a timing when the low-coverage part located at the front end passes over the position of the second cleaning section, and to stop the cleaning of the second cleaning section at a timing when the low-coverage part located at the rear end passes over the position of the second cleaning section. a transfer belt; an image forming section configured to form a toner image on the transfer belt; a first cleaning section configured to perform cleaning for removing toner on the transfer belt; a second cleaning section having a cleaning performance greater than a cleaning performance of the first cleaning section, and configured to perform cleaning for removing the toner on the transfer belt at a position on an upstream side of the first cleaning section in a movement direction of the transfer belt; a determination section configured to determine a necessity of formation of a high-coverage patch having a coverage exceeding a limit of the cleaning performance of the first cleaning section on a basis of job information relating to a print job; an image formation control section configured to control the image forming section to form the high-coverage patch on the transfer belt when formation of the high-coverage patch is necessary; and a cleaning control section configured to control the second cleaning section to execute the cleaning at a time when the high-coverage patch on the transfer belt passes over a position of the second cleaning section, wherein the job information used for determination of the determination section includes information on whether a sheet used in the print job is a continuous sheet, and information on whether a coverage rate in the print job is lower than a predetermined value, wherein the high-coverage patch includes a high-coverage part having a coverage exceeding the limit of the cleaning performance of the first cleaning section, and a low-coverage part (501F,501R) located at a front end and a rear end of the high-coverage part and having a coverage equal to or lower than the limit of the cleaning performance of the first cleaning section, and wherein the cleaning control section is configured to start the cleaning of the second cleaning section at a timing when the low-coverage part located at the front end passes over the position of the second cleaning section, and to stop the cleaning of the second cleaning section at a timing when the low-coverage part located at the rear end passes over the position of the second cleaning section.