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INTV
STB
128CLK
CLK
1st stair 2nd stair
DATA1-16
DATA
128 data transmission as head one block
In all 10 blocks of data are transferred in parallel.
(128 data x 10 = 1280 data)
DR
4-5-2. Basic Operation
All the signals are inputted to the head from the gate array IC601. This section only explains the operations for one block.
(The operations for the other blocks are the same.)
(1) The 128 data of print data are inputted to the shift register synchronized with CLK.
(2) When the STB pulse is inputted, the data inputted in (1) is moved from the shift register section to the latch section.
(3) When the DR pulse is inputted, the output stage transistors are switched ON/OFF by the "H" and "L" latch section data.
While the transistor is turned ON, the resistors heat up and thermosensitive paper changes color. The amount of heat
generated is controlled by varying the length of the DR pulses, so the color darkness of the printing on thermosensitive
paper can be varied.
Note :
The BEO terminal goes from "L" to "H" when starting the print, from "H" to "L" when print is ended.
4-14
0
1
2
T0
T1
5.75 MHz
3rd stair
4th stair
DATA
DATA
DATA
1
Stair Generation
3
4
T2
T3
T4
5th stair
253rd stair
DATA
DATA
253
254
255
T253
T254
T255
254th stair
255th stair
DATA
DATA
UP-960(UC)
UP-960CE(CE)
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