I have an Epson R300 that is a fine printer, but using Win 7 64-bit OS, the printer defaults to letter size paper. Though I select 4 x 6 and either click on Apply Now or OK, the printer continues to default to letter size. It prints fine at letter size, but I want to print photos that are 4 x 6. The letter size defaults cannot be changed successfully in "Devices & Printers" or in the software (Photoshop Elements or GIMP). In "Page Setup" the only options are various sizes of plain paper (Letter, Legal, A4, etc.). I have even made sure that administrators can manage the printer (not just print) to no avail. Epson doesn't provide drivers for the R300 leaving it up to Microsoft as part of the Win 7 OS. One site that addressed the problem, punted to Epson, despite the fact the drivers are MS' responsibility (according to Epson).
Ideas will be much appreciated. I really don't want to buy a new printer right now.