Image forming apparatus

An image forming apparatus comprising:

• paper feed rollers and conveyance rollers disposed sequentially from an upstream side along a conveyance path for a recording paper;
• a driving source configured to transmit a rotational power to the paper feed rollers and the conveyance rollers;
• a conveyance sensor disposed near the conveyance rollers so as to measure a conveyance velocity of the recording paper to be conveyed along the conveyance path;
• and
• a conveyance delay determination unit configured to calculate a conveyance delay quantity of the recording paper on the conveyance path and compare the conveyance delay quantity and a predetermined threshold,
• wherein when the conveyance delay determination unit indicates that the conveyance delay quantity exceeds the threshold, the driving source is configured to accelerate a rotational velocity of the paper feed rollers.