Motor control device and image forming apparatus

An image forming apparatus, comprising:

• an image carrier to carry a toner image;
• an intermediate transfer member to carry the toner image transferred from the image carrier;
• a driving motor to drive the intermediate transfer member;
• a recording medium conveyer to convey a recording medium;
• a transferor to transfer the toner image carried by the intermediate transfer member onto the recording medium conveyed by the recording medium conveyer, the transferor comprising:
• a second transfer member to pressingly contact the intermediate transfer member;
• and
• a counter member to oppose the second transfer member via the intermediate transfer member and press the intermediate transfer member toward the second transfer member;
• and
• a timer-controller to calculate a time at which the recording medium contacts the second transfer member and control the driving motor by correcting one of an excitation time and both an excitation time and a torque of the driving motor near the time at which the recording medium contacts the second transfer member.

An image forming apparatus, comprising:

• an image carrier to carry a toner image;
• an intermediate transfer member to carry the toner image transferred from the image carrier;
• a driving motor to drive the intermediate transfer member;
• a recording medium conveyer to convey a recording medium;
• a transferor to transfer the toner image carried by the intermediate transfer member onto the recording medium conveyed by the recording medium conveyer;
• a fixing device provided downstream from the transferor in a recording medium conveyance direction to fix the toner image on the recording medium, the fixing device comprising:
• a roller pair to nip the recording medium bearing the toner image;
• and
• a fixing motor to drive at least one roller of the roller pair;
• and
• a timer-controller to calculate a time at which the recording medium passes through a nip formed by the roller pair and control the fixing motor, the timer-controller correcting one of an excitation time and both an excitation time and a torque of the fixing motor near the time at which the recording medium passes through the nip formed by the roller pair.