Oki OKIPAGE 12i Maintenance Manual page 37

The printing operation timing chart is shown below.
CLOCKI
LOADI
DATAI3~0
STRB1I-N
STRB2I-N
STRB3I-N
STRB4I-N
The printing operation is carried out in normal mode. Under ordinary circumstances such as when the
power is turned on or when LOADI signal level is low, the normal mode is enabled.
The printing operation is carried out in the following sequence. First, the printing data DATAI3 through
DATAI0 are stored, sequentially shifted, in the shift registers of the LED drivers, by the printing data
synchronous clock, CLOCKI. Then the printing data stored in shift registers are latched by the high level
pulse of LOADI. The latched printing data turns the LEDs on by STRB1I-N through STRB4I-N and
actuates printing.
40718301TH Rev.6
Normal Mode Printing Timing Chart
First line printing data sent Second line printing data sent
First line printing
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