Help with pixels

I am new to using Photoshop. I am just trying to make a coloring book for my wedding. I have cut and pasted pics to new documents and they have all these little grey pixels around them when I print the document. I know that this is b/c the pic is coming from somewhere else. I have no problem with erasing all of that. The issue I'm having is the text I'm adding to the pages does the same thing! I don't understand why. If the pixels were visible when I enlarged the text I would erase it as well but nothing shows up. What am I doing wrong? Thanks for any help in advance!

Try other font maybe?