I'm trying to create really quick, low-quality scans of sheets of sleeved color negatives for my electronic catalog. I am not trying to scan negatives in the proper sense (i.e. to actually produce usable, high-quality images).
With a reflective (not transparency/photo) scanner, the scanned image that results is exactly as I would expect: "negative" images with the orange color cast of the developed film base. What method can I use to quickly remove the orange color cast, and invert the image (or, conversely, invert the image, and remove the cyan color cast). Ideally, I'm looking for steps I can use to create a Photoshop action sequence to automate this process.