Hello everyone, I have now examined my printer more closely and found that it is continuously printing blue streaks on the paper, regardless of whether I am printing in greyscale or colour. After opening the back of the printer, I have discovered a sponge-like drum which I assume is soaking up excess colour. It is quite dirty and now I have the following questions: - What exactly is it? Is it the image drum or something else in the printer? - Could this actually be the cause of my problem? - Is it possible to remove it and what is the best way to clean it? - If a new one is needed, where can I find a suitable one? Many thanks in advance for your help!