LCD OPTREX 50301 from Konica Copier 4355

Hi, I’m new to Arduino, but have a lot of old hardware laying around…
On of this old hw is an Optrex LCD DMF50301, from what I found out it is similar to this one (at leats the IC’s onboard are the same):

http://pdf1.alldatasheet.com/datasheet-pdf/view/100769/OPTREX/DMF-50174.html

From what I understood from datasheet, should be something like this:

FLM HIGH
Set first 4 bits (1,2,3,4 pixels)
CLOCK HIGH
CLOCK LOW
Set next 4 bits (5,6,7,8 pixels)
CLOCK HIGH
CLOCK LOW
repeat the bits until 320
CLOCK LATCH HIGH
CLOCK LATCH LOW
repeat for 240 lines…

But what I write on the first 320 bits is repated to the next lines.
Can someone help me with the timings ?

Here some pics:

All the help is welcome.

Have a nice 2010