Image forming apparatus and feeding tray

An image recording apparatus comprising:

• an apparatus body having a support shaft;
• a feeding tray being capable of accommodating a sheet-type recording medium stacked thereon and capable of being pulled out from and inserted into the apparatus body;
• a side end guide provided on the feeding tray along a recording medium feeding direction and shiftable relative to the feeding tray in a direction orthogonal to the recording medium feeding direction;
• an image recording unit provided in the apparatus body for recording an image on the recording medium;
• an arm member capable of swinging about the support shaft extending in the apparatus body in the direction orthogonal to the recording medium feeding direction;
• a feeding roller disposed on a swinging end side of the arm member and coming into abutment with an uppermost recording medium stacked on the feeding tray when the feeding tray is inserted into the apparatus body and transporting the same toward the image recording unit;
• a cam portion provided on the side end guide and having a height from a bottom surface of the feeding tray which varies along the recording medium feeding direction;
• and
• a driven portion provided on the arm member, the driven portion being brought into slide contact with the cam portion and displaced when the feeding tray is pulled out from or inserted into the apparatus body to cause a swing movement of the arm member.