My 10 year old loves comics and graphic novels. LOVES them. I have absolutely nothing against comics - I think they're great and have seen some great works in that medium. But it's all he'll read. He doesn't seem to have the patience, focus and/or willingness to read chapter books at his grade level. The only happy medium seems to be Diary of a Wimpy Kid and others in that style, but as a general rule if it doesn't have pictures on every page, he won't read it.
I don't want to stop him from reading what he enjoys, but I'd also like for him to experience a wider variety of books, and also prepare for some more adult reading which will inevitably come as he gets older and advances in school. I read aloud to him and he enjoys that, it's just the solo reading that he has trouble with. Any advice or good transitional material?