Is the point to restore the tape or to get the data off? If it's to get the
data off I think it's probably less effort to just carefully read the tape
with some custom electronics.
How much tape are we talking about here?
On Friday, 29 January 2016, Jason <[log in to unmask]> wrote:
> My idea was to scan them, convert to a vector format with Illustrator image
> trace and laser cut new tapes which could be read as normal.
>
> For the method below, I would recommend a non-compressed image format such
> as TIFF (at at least 300dpi) as JPEG compression affects the clarity of the
> image and may cause readbility issues.
>
>
> on 27/01/2016 21:01, Dave Wade at [log in to unmask] <javascript:;>
> wrote:
>
> > Thanks Jason,
> >
> > Sorry for delay in replying but I have been away. I actually have one of
> > those. They are ok except that they come with sticky patches, except that
> > the patches are no longer sticky....
> > ... the person who owns the tapes wants to read the data. The current
> scheme
> > is to scan them into jpegs, and then use image recognition to extract the
> > data. This has been done for punched cards before but not paper tape.
> >
> > Dave Wade
> >
> >> -----Original Message-----
> >> From: Museums Computer Group [mailto:[log in to unmask] <javascript:;>]
> On Behalf
> >> Of Jason
> >> Sent: 25 January 2016 15:20
> >> To: [log in to unmask] <javascript:;>
> >> Subject: Re: Restoring Old Paper Tape (With punched holes)
> >>
> >> There's a machine for repairing small damaged sections here.
> >>
> >> http://www.cryptomuseum.com/telex/repair/
> >>
> >>
> >> on 22/01/2016 20:19, Dave G4UGM at [log in to unmask] <javascript:;>
> wrote:
> >>
> >>> I received this on another list. Is this in scope for this list. Any
> >>> thoughts folks please?
> >>>
> >>> I'm tossing this out here as a conversation-starter more than a
> >>> request for help, although I may end up putting the knowledge to use.
> >>> Today I received a set of original HP paper tapes for the 2115a
> >>> machine. I don't know if they've been archived or not - there are
> >>> dozens of HP tapes on bitsavers and I'll have to make a P/N list and
> >>> compare them. The real problem is they're in horrible shape. Decades
> >>> of basement moisture and likely a few critters have turned them
> >> blackened, moldy and stuck together.
> >>>
> >>> So, what to do? How to get to the data without a bio-hazardous
> >>> payload along for the ride? My thoughts go toward sunlight and/or U/V
> >>> light (like a hair salon sanitizer,) rubber gloves and a mask,
> >>> isopropyl alcohol, careful picking apart of layers, etc. I'd think
> >>> one thing in our favor is that holes in paper are going to be easier
> >>> to read than ink on paper. So Part 1 is getting them into readable
> >>> condition, with part 2 being the actual reading.
> >>>
> >>> Any experience out there?
> >>>
> >>> -j
> >>>
> >>>
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--
Nick Clarey
CEO, Airsource Ltd.
Phone: +44-1223-708370
Fax : +44-1223-309814
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