Abstract: A roll for use in business machines has a shaft and a roll main body disposed at the circumference of said shaft, wherein the roll main body is made of a polyurethane resin comprising a surface layer composed of a skin layer and an inner layer composed of a foam layer which are formed into an integrated structure. The roll is suitably used for removing residual toners on the photo-sensitive drum in dry process copying machines.

Abstract: An ink ribbon cartridge comprises a cartridge housing, an endless length of ink ribbon received in the housing, and a take-up roller and a pinch roller for transporting the ribbon and guiding the ribbon in a repetitively folded manner, characterized in that at least one of said take-up and pinch rollers consists of a compressed body of flexible or semi-rigid polyurethane foam. The use of compressed flexible or semi-rigid polyurethane foam results in improved rollers which have the good ribbon driving performance and driving stability.

Abstract: An ink roller and a method of producing the same are disclosed. This ink roller is produced by preheating a flexible polyurethane foam havng a three-dimensional skeletal reticulated structure and a pore size of 20-60 pores/cm at 130.degree.-190.degree. C., subjecting the preheated foam to permanent deformation through compression at a temperature of 130.degree.-220.degree. C. and a compressibility of 1/3-1/15 and cutting the resulting compression body having a hardness of 15.degree.-60.degree. into a given shape in such a manner that the axial direction is coincident with the compression direction of the compression body.