Cleaning tape with surface protrusions formed by particles of predetermined size/density and non-magnetic metal evaporated film of predetermined thickness

A cleaning tape comprising:

• a non-magnetic substrate;
• surface protrusions formed over a surface of said non-magnetic substrate with particles having a particle diameter of 10 to 40 nm and at a density of 300×104 to 5000×104 per mm2;
• and
• a metal evaporated film of a thickness of 10 to 200 nm formed over said non-magnetic substrate including said surface protrusions, said metal evaporated film is one of a metal layer and an alloy layer containing at least one of tungsten, molybdenum and magnesium.

A cleaning tape comprising:

• a non-magnetic substrate:
• a metal evaporated film layer formed over said non-magnetic substrate, said metal evaporated film layer includes a non-magnetic electrically conductive layer, and
• particles disposed in said metal evaporated film layer to create surface projections, said surface projections varying in accordance with a diameter and a density of said particles, and
• wherein said diameter of said particles is 10 to 40 nm and said density of said particles is 300×104 to 5000×104 per mm2, and wherein said metal evaporated film is of a thickness of 10 to 200 nm.

A cleaning tape comprising:

• a non-magnetic substrate;
• particles dispersed over said non-magnetic substrate, said particles having a predetermined diameter and a predetermined density;
• a metal evaporated film formed over said non-magnetic substrate and said particles, said metal evaporated film includes a non-magnetic electrically conductive layer;
• and
• surface protrusions formed aver a surface of said metal evaporated film, said surface projections varying in accordance with said predetermined diameter and said predetermined density of said particles, and
• wherein said predetermined diameter of said particles is 10 to 40 nm and said predetermined density of said particles is 300×104 to 5000×104 per mm2, and wherein said metal evaporated film is of a thickness of 10 to 200 nm.