The printer image quality degrading? The printed image is not clear？

Hey all,

   If you had your printer for a little while now and despite it being a laser printer ,
and you always has been happy with its image quality ...  Until it's recently started image quality not clear.
   Two problems started to appear more or less simultaneously :  colored pictures now have these 'stripes' and the toner at the edge gets literally torn off by the printer . I have attached some pictures to illustrate the problems .

Neither the manual nor the internet seem to have any suggestions about cleaning the damn thing , so you can ask me if you want to know that what up . Maybe I can help you to slove this issue .