HP Deskjet printer buying guide

I will be placing the pictures in the view finders. Most of these view finders are purchased at most amusement parks. The ones I purchased in the past are made with slide film but I want to print on the spot pictures at the highest dpi so you can view your images clearly. Just want to know if this is possible with the hp photosmart D7260. It can be done I just need to find the right printer.. Thank you

ive tried it once and it came out all wet and messed up what am i doing wrong.

Ive had this printer for a couple of months now, but want to print some 10×15cm photo’s. The Printer has a designated space for the photo paper that size to be put in, which i did. I wen throught the actual printing menu on my computer, both for the printer setting, but also for the iPhoto printing window. I looked throught the menu on the actual printer, but cant find anything where i can specify what paper tray he should use.
There is a USB, memory card dock where you can plug in camera memory cards, but I need to print a picture i got via email.
Im a complete technology retard, and cant seem to figure out what to do. I hope the discription helps, has anyone got this printer or knows what to do??
Thanks

a4 os the standrd size double that you get a3 and double again a2. if you type in a3 hp desktop printer in your search engine you will get alot of results below is just one

My printer is an HP Photosmart 8250 and the envelopes are 5 3/4 x 8 3/4. I have them decorated and personalized but my printer keeps jamming them. How can I set my printer to accept these? I have windows xp. There is no A9 option for envelopes on my printer settings but there is A5 and A6. Please help, I called HP and they did not understand my issue.