| 摘要 |
An image forming apparatus includes a plurality of light-emitting element array chips including a light-emitting element array and a transfer element array, and a control driver applying a signal to the plurality of light-emitting element array chips. The control driver includes a check terminal that measures signals output from the plurality of light-emitting element array chips, and the control driver determines whether any of the plurality of light-emitting element array chips are defective by analyzing the signals measured at the check terminal. |
