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2.3 Off-line Test
This is used to print the built-in test pattern of this printer
and for execution of an MG self-test.
2.3.1 Pattern setting
This printer has seven types of built-in printing patterns.
Select a pattern and press the "ENTER" button to store it.
Return to the initial pattern is made when the power is
cut.
1) Step
This is for confirmation of uniform gradation.
2) Vth
A and B are printed with the same data values.
This is used to confirm that the power supply volt-
age compensation (Vth) has been done correctly
(same density).
3) Registration
This is used to confirm that each color overlaps cor-
rectly.
4) Address
The head has 1152 heater elements.
This is used to confirm the uniformity of the density
for each heater element.
5) Color
This is a pattern for overall evaluation
6) Black
For checking of black ink blurring, drop-outs, etc.
7) Gray
For checking of feed irregularities caused by me-
chanical trouble etc.
8) ALL
The above patterns 1) to 7) are printed in sequence.
(Each pattern is printed on separate card.)
Step
Vth
Registration
Address
Gray
Color
Black
B
A
