6-18
Samsung Electronics
• SURROUNDING TEMPERATURE SENSOR
DS1621S(DALLAS SEMI.) is applied to read the
t e m p e r a t u re around ink cartridge. It is used to get
optimum inking quality by keeping the viscosity of
ink in the cartridge in the specified lerel. The way
to read temperature is similar to EEPROM, con-
t rolled by THM-CLK, THM-DATALINE. Digital
thermometer to check the surrounding temperature
is assembled along with home sensor in the frame
of assembly CR. After each line is inked, it re a d s
the surrounding temperature and heats substrate
heater in the ink cartridge during the accelerating
time of CR to keep the viscosity of ink in the speci-
fied lere l .
6-1-5-4. HEAD DRIVING TIMING
C o n t rol signal from MFP c o n t roller (KS32C6200:U16)
enters the head driver (U26, U27, U32, U33) and it
becomes the level to be able to drive the head nozzles
( + 11.75V). It is depicted in the following diagram.
Fig.6-1-16. HEAD DRIVING TIMING DIAGRAM
Содержание SF4500
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