1 to 1
referring to copies, SS docs to SS copies
1 to 2
referring to copies, SS docs to DS copies
2 to 1
referring to copies, DS docs to SS copies
2 to 2
referring to copies, DS docs to DS copies
4C
4 colors - color printing
4\0
a trade designation for a printed piece with four colors (full color) printing on the front side and no printing on the back side
4\1
a trade designation for a printed piece with four colors (full color) printing on the front side and one color printing on the back side
4\4
a trade designation for a printed piece with four colors (full color) on the front side and four colors (full color) printing on the back side
4\K
Process color over Black: One side of the page prints 4 process colors and the other side prints Black