Epson UK Printheads (SX series)
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Epson UK Printheads (SX series)
Patent Protocol
figure 2: http://www.freepatentsonline.com/8430468.pdf
SCK : Clock for SI&SP pin 13
LAT : Latch signal
SI&SP: Drive pulse selection data, selects nozzle
COM : Drive signal
CH : Connect drive input to nozzle
http://www.freepatentsonline.com/8430468.html
Click to access 20100220133.pdf
Click to access 20090066739.pdf
From: https://patentimages.storage.googleapis.com/9b/87/b8/23bb7e5e9ade1f/US6758544.pdf
Pinout guesses:
2 Gnd/NC/HV Gnd?
3 Gnd
4 3v? ref? from printer
5 3.3v from printer
6 Gnd
7 Gnd
8 <2v 1us Trig? Probably CH? (could be latch?)
9 3.3v? from printer
10 3v 0.5us Trig? from printer? Probably LATCH
11 Gnd/NC??
12 Gnd
13 Clk? 100ns 3v/from printer! Probably CLK?
14 Gnd
15 100ns 3v Data? from printer? SI&SP DATA1
16 Gnd
17 100ns 3v Data? from printer? SI&SP DATA2
18 Gnd
19 40v (43v from printer)
20 HV Data from printhead? from printer? (constant 1.5v with no head connected)
21 Gnd/NC/HV Gnd? Probably COM2
| Pin | Signal | Use? |
| 1 | HV Data from printhead? (40v signal) | Probably COM1 |
| 2 | Gnd/NC/HV Gnd? | Probably COM1 Gnd? |
| 3 | Gnd | Signal Gnd? |
| 4 | 3.3/3v ref from printer. | |
| 5 | 3.3v from printer | |
| 6 | Gnd | |
| 7 | Gnd | |
| 8 | <2v 1us | Probably CH |
| 9 | 3.3v from printer | |
| 10 | 3.v 0.5us from printer? | Probably LATCH |
| 11 | Gnd/NC?? | |
| 12 | Gnd | |
| 13 | Clk? 100ns 3v from printer | Probably CLK |
| 14 | Gnd | |
| 15 | 100ns 3v Data | SI&SP DATA1 |
| 16 | Gnd | |
| 17 | 100ns 3v Data? from printer? | SI&SP DATA2 |
| 18 | Gnd | |
| 19 | 43v from printer | |
| 20 | HV Data? | Probably COM2 |
| 21 | Gnd/NC/HV Gnd? |
RSS