The rawmode looks pretty ancient to me; on my printer I had the issue that it did not eject the output at the end...
Since you work with the 64-bit IDE I checked also a 64-bit version of the (TAChart) print demo, and it is working, too, as expected.
I could only imagine that your print driver has some issue processing one or some of the canvas drawing commands that TAChart uses. A workaround may be to install your printer a second time, now using a similar model; or use the driver coming with Windows instead of the manufacturer's driver. I am attaching a simple test program which only draws a simple line across the page -- this is the kind of graphics used by TAChart. It should work.
On the other hand, I must say that I do have occasional printing problems, too. In my case the print dialog says irreproducibly that my Epson does not exist. I attributed this to an unstable WiFi connection. Having fixed this I did not see this again, until a few minutes ago after having printed the rawmode demo. ATM, I cannot tell what this is...