PURPOSE: To easily clean a transfer process, a pressing process, a reading proc ess, etc., only by inserting a cleaning sheet by forming a card body and a sheet body through the use of a nonwoven fabric including a polygonal cross section extra fine fiber at a wiping face or additionally providing a projecting part at the wiping face and impregnating dust removing liquid.

CONSTITUTION: The sheet is made by sticking or thermally melt-sticking the nonwoven fabric 1 of the polygonal cross section extra fine fiber of acrylic, polypropylene, polyester and polyethylene or including the polygonal cross section extra fine fiber of the mixture of them to both side of the mount 5 made from paper, plastic, rubber or another nonwoven fabric and cutting it into a shape of a card. In this case, laminating (A) the nonwoven fabric 1 to both side is satisfactory but the nonwoven fabric is not peeled easily at the time of making one terminal edge a loop 4 so as to wrap (B) the mount and inserting the card from the side of the loop into a port. It is desirable to make this card have the unit weight of 20g/m2 to 100g/m2 and the thickness between 0.5mm to 1.2mm.