Minimum of 200DPI per scan. The bigger the dpi the larger the image (filesize and view) and the more clarity it will have when its blown up. I use the TCR number for a filename, and then add an "a" at the end of the second side. so N1234.jpg and N1234a.jpg completes the pair. I don't always scan the back of the chip if its the same (many house chips have the same artwork on both sides). Saves me time, but you may decide different for your personal collection.

I save the chip into a jpg file. At a lower compression (or higher quality) --- and each program labels this differently, 80% is what Adobe Photoshop Elements uses, and that is the software I use for manipulating the image. So its pretty clear.

I still use Epson software to scan the chip, but through the Adobe Photoshop Elements. It will acquire the scan by running the Epson software, allow me to set the contrast, brightness, pick the image to scan, some very basic rotating if I want and then into Elements. That is where I can fine tune the scan by cropping, rotating, cutting, pasting, whatever I want before saving it.