EU

[Tony Duell]

> > I would assume it's a linear (as opposed to area) CCD. Now, I spent many 
> > years playing tricks with CCDs, and one thing that's burnt into my memory 
> > is that the drive pulses are critical. Not mild;y critical, but _very_ 
> > critical. 
> 
> OK, scratch that idea, then :-)

If you think how a CCD basically works, it has a series of electrodes 
(normally 3 or 4 'phase' drive) on the surface of the chip, by sequencing 
the votlages on these electrodes, you move the accumulated charge along. 
Charge transfer actually occurs as the voltages are changing, which means 
the rise/fall time, and to a lesser extent the shape of the 
rising/falling edge matters. Too steep can be a problem. I spent many a 
late night looking at the 'scope and adding low-value series resistors to 
slow things down a bit.


> 
> > Anyway, there is the other problem that if I do get the scanner, what the 
> > heck do I store the data from it on. I am not using multiple 8" disks per 
> > page :-) 
> 
> You know, I did almost raise that question - but I figured that you've 
> probably got some old mini laying around with a reasonably large-capacity 
> full-height SCSI disk in it :-)

My minis have RK05s and the like. 2,5M on a pack is not a lot of use for 
this. OK, I have a couple of RK07s, but they're 'only' 28MBytes, and I 
don't have that many packs for them (enough to use, bot enough to use for 
archiving images).

> 
>  > Do you know of a CD burner that comes with a service manual?
> 
> For starters I'd want to be able to trust CDs as a good storage medium, so 
> let's not go there ;)

No, but I am told CD-ROMs are useful for sending said scanned manuals to 
places like Bitsacers.

-tony