12 Feb
2011
12 Feb
'11
9:09 p.m.
Ohh god stop this discussion.
Tony, I find you kinda offensive, and always brain dumb, with your replies to me.
If the objective is a true printout, the digital data is available up the chain in the
system.
If you want a cool screen print effect, use a digital camera and shoot, permanent, make a
scope camera frame out of plywood.
For those of you that are serious about Tektronix equipment and resources, we are all here
in Beaverton for your serious restoration efforts.
Randy
From: ard at p850ug1.demon.co.uk
Subject: Re: Tektronix 4010/4014 terminal printer project
To: cctalk at classiccmp.org
Date: Thu, 10 Feb 2011 19:58:28 +0000
In article <d7c81ea7b43ac08503dccfb4a518a78e at cs.ubc.ca>,
Brent Hilpert <hilpert at cs.ubc.ca> writes:
Actualy, I would say the 4631 printer is very close to being a TV system.
As I understnad it (and it's been some years since I looked at the
schematics), the printer casues an electron beam (from the flood gun?) to
be scanned over the storage target in a raster. This produces a signal
indicating the charge level on the target for that point. And the printer
has a 1-dimentinal CRT whic his sanned in synchronism to the raster
lines, its image is recorded o nthe apepr. The vertical 'deflection' in
the printer is obtained by advancing the paper.
No matter how the image in the storage tube is put there, the printer is
a raster devvice. There is a limited vertical resolution from the number
of lines in taht readout raster. I assume the horizontal resolution is
limited only by the bandwidth of the system.
-tony
On 2011 Feb 8, at 7:16 AM, Richard wrote:
Sure, but its not a TV system. There is some limit to the resolution
of a 463{1,2} printer. There is also some limit to the resolution of Philip Belben <philip at axeside.co.uk>
writes:
> For that matter, how big are the pixels?
There aren't any pixels.
I know what you mean here, so not to argue your point about the analog
process in the system under discussion, but I would like to add an
historical footnote: even analog raster-scan systems were characterised
in terms of "picture elements" going back to the very early days of TV.