Ah, Commodore products. Remember them? This is from their most popular printer! (The MPS-801, but you can guess that from the title.) For some reason, years ago I felt compelled to print out an entire CHR$ list. Now fast-forward to present day, where me with a smartphone can take photos of it and zoom in and stuff and put together a whole font. Dot matrix is so easy, hm? :)
A font printed on paper containing printer issues I've found out about/experienced.
A and T: Mottled print and dots
C, G, P, and R: Toner at top of page
E and I: Vertical dark lines
H: Repeating background
J: Incorrect margins
K:
L: Vertical dark band
M: Gray background
N: Repeating defects
O: Horizontal light bands
Q: Washed-out print
S: Misaligned print
V: Compressed print
W: Non-fused toner
X: Folded or wrinkled paper
Y: Compressed text//image
Z: Paper Curl
@: Vertical dark streaks only