Abstract: An electrophotographic printer using an electroluminescent imaging head having surface emission light emitting elements arranged in an array in the fast scan direction, in which the elements are divided into a plurality of elements in the slow scan direction, and in which the elements in the trailing position have a greater dimension in the slow scan direction than the elements in the leading position.

Abstract: A plurality of thin-film transistors constituting an array are successively switched on by gate signals. Feed-through correction capacitances are respectively connected between an output terminal of each thin-film transistor switched on by a certain gate signal and a predetermined number of gate lines for supplying subsequent gate signals. A decrease in an output voltage of each thin-film transistor caused by transmission of a fall of the gate signal to the output terminal via a gate-source capacitance is compensated for by a rise of the subsequent gate signal which is transmitted to the output terminal via the feed-through correction capacitance.