Image forming apparatus including optical print head

An image forming apparatus comprising:

• a photosensitive member;
• a light-emitting diode (LED) exposure unit that includes a first substrate, wherein the first substrate includes a connector and light emitting diodes, wherein the light emitting diodes are configured to emit light with which the photosensitive member is exposed, wherein the LED exposure unit is configured to be moved, by an operator in a rotational axis direction of the photosensitive member via an opening formed in a front-side plate constituting a front side of a frame of the image forming apparatus, to a first position and to a second position from the first position, wherein the first position is a position of exposing the photosensitive member with the emitted light, and wherein the second position is a position where the connector is exposed from the front-side plate opening;
• a second substrate configured to generate a driving signal for driving the LED exposure unit;
• a flexible flat cable configured to connect the connector and transmit the driving signal from the second substrate to the first substrate, wherein the flexible flat cable extending from the connector is folded in such a way that a surface of the flexible flat cable faces a bottom portion of the LED exposure unit, and the flexible flat cable extends in one direction from the second position toward the first position;
• a partition plate arranged between a sheet feeding unit and the LED exposure unit, wherein the partition plate is configured to partition the sheet feeding unit and the LED exposure unit;
• an opening formed in the partition plate and through which the flexible flat cable extending from the second substrate to the first substrate passes;
• and
• a supporting portion provided on the bottom portion of the LED exposure unit on a downstream side of the connector in the one direction and configured to support the flexible flat cable extending from the connector, wherein, when the LED exposure unit is located at the first position, the flexible flat cable extending from the connector is folded on a downstream side of the supporting portion in the one direction and extends toward the partition plate opening, and the supporting portion is located between an area of the flexible flat cable from the connector to a portion where the flexible flat cable is folded and an area of the flexible flat cable from the portion where the flexible flat cable is folded to a portion where the flexible flat cable passes through the partition plate opening.