Small serial thermal receipt printer as sold by SparkFun and Adafruit. I'm incorporating it into a project of mine, so I modelled it. The exterior is quite faithful to the product. Yes, where the paper roll lays is also correct (a 1.5" diameter cylinder fits in there, I tested)
Details omitted: The latch I made in the drawing doesn't show the tabs to engage into the top, and there are no mechanisms, circuits, or the heating element accounted for.
Link where I bought mine: http://www.sparkfun.com/products/10438