Sheet conveyance apparatus and image forming apparatus

An image forming apparatus comprising:

• a first conveyance unit including an image forming unit and configured to convey a sheet on which an image is formed;
• and
• a second conveyance unit including a cover movable between a close position at which the cover is positioned when the sheet is conveyed on a sheet conveyance path and an open position at which the cover is positioned when the sheet conveyance path is opened, the second conveyance unit being configured to be movable, in a state where the second conveyance unit is supported by the first conveyance unit, between a first position where the sheet conveyed from the first conveyance unit can be conveyed to the sheet conveyance path and a second position separated from the first position,
• wherein the first conveyance unit includes a retaining portion configured to retain the cover at a predetermined position,
• wherein the cover does not interfere with the retaining portion in a condition where the second conveyance unit is positioned at the first position,
• wherein the cover is in contact with the retaining portion and retained at the open position in a condition where the second conveyance unit is positioned at the second position and the cover is moved from the close position to the open position.