Epson 4100 manual Pitch Maximum Dot Density Columns Per Line, D1d2 C1c2

Operator’s Guide 173

10 Pitch			12 Pitch
	Maximum Dot		Maximum Dot
Density	Columns Per Line	Density	Columns Per Line
(d1d2)	(c1c2)	(d1d2)	(c1c2)
50	680		816
		60
60	816		979
		72
75	1020		1224
		90
100	1360		1632
		120
120	1632		1958
		144
150	2040		2448
		180
200	2720		3264
		240
240	3264		3917
		288
300	4080		4896
		360

g1 through gx specify the pin fire patterns for each dot column. The x in gx refers to the maximum number of dot columns that can be reserved for the specified graphics density, as shown above.

Eight of the 9 printhead pins are used to print graphics. To calculate g1 through gx, design each dot column as a cell that is 8-dot-rows high, then add the cell values vertically for each dot column. The value of g for each column can be expressed as a decimal number: the bits set to 1 correspond to the printhead pins that fire to create dots in each pattern. If a bit is set, the corresponding pin fires. If it is not set, the corresponding pin does not fire. See the figure and example that follow.