3 Dec
2025
3 Dec
'25
9:55 a.m.
I don't think it's the general quality of the patent print that's poor,
it's the line-printer listing section from
https://www.hp9845.net/9845/downloads/patents/US4089059.pdf starting at
about page 213 of the pdf , possibly section 26 of the patent.
The print in that section is much paler than the rest - typical of a worn
line-printer ribbon. I doubt the printed copy is any better. I'm only
trying to OCR the listing, not the rest of the patent.
On Wed, Dec 3, 2025 at 2:42 PM Paul Koning via cctalk <cctalk(a)classiccmp.org>
wrote:
On Nov 30, 2025, at 14:19, Adrian Godwin
<artgodwin(a)gmail.com> wrote:
No, it's a scanned listing from a patent. I think it's on the Australian
ho museum site. But that does make me wonder if preprocessing the input
image files would be faster than postprocessing the text output files.
If the scan you have is not very good, an option would be to contact the
patent office for a copy. It may well be a copy direct from their archives
is cleaner than what you have now.
paul