14 Apr
2024
14 Apr
'24
11:11 a.m.
It wasn't just Versatec plotters that used this mixture - standard office
photocopiers also had clay-coated paper and liquid toner. I don't know what
allowed the change to plain-paper copiers (which use an intermediate
photosensitive drum, like a laser printer) but it was probably the expiry
of a patent, maybe Xerox's.
On Sun, Apr 14, 2024 at 8:02 AM Paul Anderson via cctalk <
cctalk(a)classiccmp.org> wrote:
I have a Versatec interface here somewhere, but I
don't remember if it is
for an 8 or 11.
Paul
On Sun, Apr 14, 2024 at 1:40 AM Tony Duell via cctalk <
cctalk(a)classiccmp.org>
wrote:
On Sat, Apr 13, 2024 at 10:48 PM Jon Elson via
cctalk
<cctalk(a)classiccmp.org> wrote:
Yes, there were a number of Versatec models for
different
paper sizes and pixel density.
Does anyone else have one in their collection?
I have an ICL-badged V80 which has a GPIB interface to link it to a
PERQ. I also have the schematics, etc for the plain V80 but nothing on
the GPIB interface (ether user or service data). IIRC the V80 is based
round a Texas 16-bit microprocessor with some AM2900-series sequencers
and ROMs to control the electrode timing.
As Jon said in the bit I deleted, there's a 'nib electrode' under the
paper and a segmented backing electrode above it. The charge image is
built up on the paper, then the toner is flowed over it and the carbon
(I assume) particles adhere to the charged bits. No drying heater in
mine.
-tony