Disc medium separator plate including multiple airflow directing features

A media separator plate comprising:

• a plate main body having a continuous, non-interrupted inner circumference and a continuous, non-interrupted outer circumference, wherein the plate main body extends from the inner circumference to the outer circumference;
• an upstream air dam feature formed with the plate main body and extending from the inner circumference to the outer circumference, the upstream air dam feature having a top surface, a bottom surface, a leading edge and a trailing edge;
• a downstream air dam feature formed with the plate main body and extending from the inner circumference to the outer circumference, the downstream air dam feature having a top surface, a bottom surface, a leading edge and a trailing edge, the leading edge of the upstream air dam feature being radially spaced apart from the trailing edge of the downstream air dam feature and the trailing edge of the upstream air dam feature being radially spaced from the leading edge of the downstream air dam feature to define an arm sweep section;
• wherein between the top surface and the bottom surface of the upstream air dam feature comprises an upstream air dam thickness and between the top surface and the bottom surface of the downstream air dam feature comprises a downstream air dam thickness, the upstream air dam and downstream air dam thicknesses being greater than an arm sweep thickness of the arm sweep section;
• and
• a third feature coupled to the trailing edge of the downstream air dam feature and having a top surface, a bottom surface, an outer circumference edge and an inner circumference edge, wherein the outer circumference edge is adjacent the outer circumference of the plate main body and the inner circumference edge is spaced apart from the inner circumference of the plate main body, wherein the third feature extends about the outer circumference of the plate main body from the outer circumference of the plate main body towards the inner circumference of the plate main body.