Printing apparatus with jam release mechanism

A printing apparatus comprising:

• a conveyor including a first pair of conveyance rollers and a second pair of conveyance rollers each configured to nip and convey a sheet;
• a first jam releaser configured to separate rollers of the first pair of conveyance rollers from each other, the first jam releaser causing a sheet nipped only by the first pair of conveyance rollers to fall when releasing nip of the sheet by separating the rollers of the first pair of conveyance rollers from each other;
• rollers of the second pair of conveyance rollers not being separable from each other;
• a plurality of sheet sensors;
• and
• a controller configured to control the conveyor such that upon a determination of an occurrence of a failure upon detection of a sheet by at least one of the plurality of sheet sensors, said failure being a sheet conveyance failure or a failure other than a sheet conveyance failure, the controller controls the conveyor to convey a sheet that is nipped only by the first pair of conveyance rollers and not having caused the failure, so that the sheet becomes nipped by the second pair of conveyance rollers prior to separation of the rollers of the first pair of conveyance rollers from each other by the first jam releaser.