I like to write SOME

Question

I like to write SOME of my personal letters on my computer and then hit print and have my letter printed so that I can put it into an envelope and mail by snail mail. With my old hp printer I could do that. with my new hp printer (model c6280 All-in one) I cannot do that. It sometimes will print but in the tiniest size letters you could ever imagine. Most people could not or would not bother to read it. what cann I do about this?