It is paper. It goes into the bottom of my printer and comes out with what I tried to print at the top of my printer. Only comes out with black however I think that this may be due to the limiation of my printer being only a black and white laser printer. Sometimes I will just take the paper out of the package and color on my floor with crayons. When I do that it works both in coloer and black and white. I sprung for the 128 box you know the one with the sharpener. I only gave it 4 starts since it only works in Greyscale on my printer.
I love this paper and purchase it all the time whenever I visit staples for any of my items I am in need of. It is strong and durable and it fits so easily into my computer. It is extremely cost effective since there is usually a rebate associated with the purchase whether you purchase it in the store itself or on line from the computer. The store always runs sales on this product and it is a good idea to stock up whenever you see the sale. Regardless of what you spend on this paper there is always a rebate for it. I just love it and will never buy any other paper for my laptop. .Buy it and you will see how right I am. Thank you for this opportunity to let you know how I feel on this.
We have been using this paper for some time and have never run into printer problems. I use an Epson All-in-one and images as well as text are always crisp and sharp. I do a fair amount of photo work and this paper works well for proofing. My wife uses an HP printer with same good results. You can't beat it for the price.
I use 24# paper for my personal use but 20# for grandkids and other family members who aren't as particular. I try to buy Staples paper on sale and have had excellent results with it. No complaints nor problems at all. If you use 20# this is as good as any "name" brand I can think of. Good solid "workhorse" product for everyday use.