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1.3.4 Smear control and rest between pages
Both smear control and the rest between pages are for preventing smearing by the
edge of the printed paper sliding against the preceding printed page.
If pigment ink is used for high-duty printing, smear control can delay the printing
operation right before the next sheet of paper is stacked on the printed sheet. Smear
control is executed by the printer controller. As for the rest between pages, the user
can set it with the printer driver so that printing stops temporarily after each page is
printed, regardless of the printing data. The smear control and rest between pages are
independent operations. If both the smear control delay time and rest time between
pages are set, a longer time will take effect.
1.3.5 Automatic power ON/OFF
The printer incorporates an automatic power ON/OFF feature. The printer turns on
when it receives a printing signal from the computer, and it turns off automatically
after a certain period of time when no printing signal is received. This feature can be
set with the printer driver.
With automatic power ON enabled, the printer turns on automatically when 3 or more
bytes of data is received continuously. The interface will remain operational even
during power OFF. (Set with the EEPROM.)
With automatic power OFF enabled, the printer turns off when a set period of time
elapses after the last printing data are sent by the computer. The printer does not
turn off automatically in the following cases: An error has occurred, paper has been
loaded into the manual feed slot, or when the front cover has been opened.
1.3.6 Print head protection from overheating
If ink runs out and the printing operation continues, the bubble jet head will
overheat. To prevent overheating, overheating protection control takes effect if the
head temperature sensor inside the bubble jet head detects an excessively high
temperature.
1.3.7 Power motor control
Power motor control is for controlling the current to attain the following objectives:
(1) Reduction of current consumption during printing
The current is controlled so that the AC adapter's maximum output (momentary
current) is not exceeded. By increasing the number of passes, current to heat the
heater once is suppressed.
(2) The head's average current consumption is suppressed to restrain the power
source's temperature increase.
Since the power source's temperature increases, it cannot be used while the
average current is exceeded.
Part 3: Technical Reference
S600
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