1 May
2020
1 May
'20
8:39 a.m.
On Fri, May 1, 2020 at 4:32 PM John Foust via cctalk
<cctalk at classiccmp.org> wrote:
Were there any paper tape devices that did not use the
sprocket holes
to move the tape?
Yes, both punches and readers.
The Facit 4070 (and the N4000) punch uses a capstan and pinch roller
to move the tape. It's driven by a stepper motor. Of course it punches
the sprocket holes.
As I said the other day several high-quality optical tape readers
(Trend, HP2748) feed the tape with a capstan and pinch roller. They do
take a timing signal from the sprocket holes of course.
-tony
- John