LTPH245 datasheet(48/64 Pages) SII

No. de pieza	LTPH245

Descripción Electrónicos	LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE

PDF	64 Pages

Scroll/Zoom	100%

Fabricante Electrónico	SII [Seiko Instruments Inc]

Página de inicio	http://www.sii.co.jp

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48 / 64 page

5-1

DRIVE METHOD

5.1

THERMAL HEAD DRIVE TIMING

Input of print data

Input of DAT and CLK transfer the print data to the shift register in the serial input. “High”

means printing and “Low” means no-printing in DAT. DAT data is read in at the rising edge of

the CLK inputs. The transferred line of data is stored in the latch register by turning LATCH to

“Low”.

Input of the head activation pulse

Setting the DST on "High" drives the heat elements of the thermal head. Select the block to be

activated and drive for the time calculated using the formula shown in "3.6 CONTROLLING

THE HEAD ACTIVATION (DST) PULSE WIDTH", then set the DST to "Low".

Figure 5-1 shows the example of timing chart of the thermal head driving.

1: The print data for next dot line can be transferred immediately after storing the print data into the latch register.

Figure 5-1 Example of Timing Chart of the Thermal Head Driving

CHAPTER

CLK

DAT

DST

Latching data

Data transfer

LATCH

Data transfer

LTPH245 Datasheet(PDF) 48 Page - Seiko Instruments Inc