Epson EU-T532 Technical Manual page 18

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Data input and printing
The thermal head consists of the head heating elements, the head driver, which controls or
drives the head heating elements, and the thermistor, which detects the temperature of the
thermal head. The serial print data input from Data In (DI1) is synchronized to the CLOCK
(CLK) input, and temporarily placed in the SHIFT REGISTER. Using the LATCH (/LAT) signal
timing, these data are then stored in the LATCH REGISTER. Activated by the STROBE signals
(/STR1, /STR2), the stored print data is used to control the gate ON condition for the head
heating element drive pulse.
This printer is equipped with two strobes, and can print using a maximum of four divisions.
The drive pulse width is controlled by the control circuit board module.
Table 2-3 Strobe and Dot Number
STROBE No.
1
2
Rev. A
Figure 2-8 Thermal head block diagram
Dot No.
1 to 320
321 to 640
EU-T532/T542 Technical Manual
*The STB terminals are pulled down in the control IC.
Dots/STROBE
320
320
Operation Principles 2-7
64 output each