Conveyance control apparatus

A conveyance control apparatus comprising:

• a stacking base that stacks ejected paper sheets;
• a sensor that detects a paper sheet after the paper sheet is ejected according to job data before the paper sheet is stacked on the stacking base;
• a detection time measuring unit that measures a sensor-on time during which the sensor detects the paper sheet;
• a storage unit that stores (i) a near-full-stack time for judging whether or not a stacked volume on the stacking base enters a near-full-stack state and (ii) a full-stack time for judging whether or not the stacked volume on the stacking base enters a full-stack state;
• a judging unit that judges a stack state on the stacking base based on paper sheet information of the job data and a measured result obtained by the detection time measuring unit;
• and
• a conveyance control unit that performs control to temporarily stop paper sheet feeding and to thereafter feed a predetermined number of paper sheets, when the judging unit judges that the sensor-on time is equal to or greater than the near-full-stack time and that the sensor-on time is shorter than the full-stack time.