I was suprised just how simple it was and it worked for me. I put this through my 2550 epson printer and it managed to print thicker paper up to 230g without a problem - before using this product the paper would just roll through the printer but after i put 1 sheet of the product through it cleaned the main wheel and has been printing ok since
I wasn't sure how to use them as my printer was not on the list but, I have used one sheet, running it through three times and it has stopped the ink marks I was getting on the paper. Worth trying as they were a reasonable price.
Have used these before and they really clean the rollers on my printers picking up ink. I use them twice for each printers doing them one way and then the other. It is just a pity they have to come from Japan. Why no-one in the UK stocks them I have no idea. I have two packets which will do me for awhile - I have 4 printers in use daily and and am so pleased to have them in hand.