Because the use of recycled paper with a lot of colours used in printing. The heat from the rubber roller in the printer makes color it melt thus making rubber wheel problem.
Because they use recycled paper with many colors used in printing. The heat from the roller in the printer, make sure it melts. thus making a rubber ball
Because they have to use recycled paper with a lot of color used in printing. The heat from the inner ball printer color it melts the rubber balls have a problem!