IMAGE FORMING APPARATUS, CONTROL METHOD, IMAGE FORMING SYSTEM, AND CARRIER MEANS

An image forming apparatus includes: a printing unit (16) to perform normal printing of a job according to a setting; an acceptance unit (10) to accept a request for executing printing of another job while the printing unit (16) is performing the normal printing of the job according to the setting; a printing control unit (12) to, when the request for executing printing of another job is a request for executing trial printing, control the printing unit (16) to interrupt the normal printing of the job to perform the trial printing of the another job; and a sheet ejection control unit (18) to control an ejection unit (106) to discharge a recording medium printed in the normal printing of the job and a recording medium printed in the trial printing of the another job on different sheet discharge trays.