I have just finished testing a couple of circuit boards that might be useful to people making roll scanners based on the Mark3 system. One is a stepper driver...
I have about 50 Solo Apollo player piano rolls which I got in the 1950's. The piano was a very elaborate model by Melville Clark from about 1910. The piano is...
In recent months, a twin array version of the MK3a system, with a pair of staggered A4 CIS sensors, has been successfully developed. At this time, two such...
Just a brief note to let all know that batch 16 of piano roll midi files emerging from scanning by me and a number of others, is now uploaded. It contains...
Hello folks, I am new to this group, and primarily interested in hardware and software for scanning very long documents similar to those you are dealing with....
... Hello Kevin, Welcome to the rollscanners group. We are primarily concerned with specialized scanning equipment for handling music rolls, so many of the ...
A few months back, I mentioned that a method had been found to adapt the MK3a system to develop a MK3b twin array scanner for scanning music rolls wider than...
Really a nice job, Terry, John, and all. I really appreciate the wisdom of the optical encoder. That should keep everything so precise and not affected by...
Hello Craig, I hope I can explain the CISVIEWER screen image on Terry's website. What you are seeing is the output of the two CIS arrays displayed side by ...
... Hi Terry et al, I can offer some further information that may be useful. Spencer Chase and John McClelland, both of whom have twin array scanners up and...
Warren, I think, as you do, that capstan drive is superior on the wide rolls requiring two CIS readers, because encoders only read vertically. They are fooled...
Greetings Rollscanners, I have built a twin array mk3b scanner with the help of Kevin Keymer who built the modified circuitry for me and customized the...
... <corrinedebert@s...> wrote: ... instant ... software, ... anywhere. It ... Hello Anthony, is the mark2 version the one that allows monitoring of the ...
It seems to me that fixed rate perforators could be duplicated very precisely with a combination rate adjusted picked off from a wheel and a few optical...
... Hello Walter, I'm embarrassed to admit that I never finished that version of the viewer for you, and even more so that I didn't write to apologise, but I...
As promised, Anthony's CIS Utilities have been upload to my web site. See: http://members.shaw.ca/paud122/software.htm Click on "CIS Utilities......" They...
A characteristic of the MK3x systems is random blooms of light pulses that typically splash clear across the full width of the CIS. They may be a single line...
Hi Terry, I have made attempts to minimize the speckles and blooms ( scan-line glitches as I call them ), but they seem to be a characteristic result of using...
I believe that these blooms are the result of the PC not strobing the SI line in a constant way. The integration time is the time between 2 SI pulses....
Greetings, I posted here about a year ago, but being a student I became busy and never got around to following up. I also have a more pressing situation to...
For many weeks I have been plagued with serious random blooms in my roll scans, which prompted my message appealing for discussion. Last night I woke up my...
Hi Terry ! I think that scotch tape can be removed quite easily. A standard hardware store solvent will do it. Can't think of it at the moment, but I'll...
... Terry, You may be on to something here. It could be very possible that the static electricity from the moving paper is arcing to the CIS and causing...
I thought I'd jump in on the static discharge problem. I, too, think this could be the problem. Get thee to the Christmas or party store and buy some METALLIC...
Up until this thread started, I had not paid any attention to some of the statistics that came from the CIS converter. Out of curiosity, I went through some ...
Craig Smith has probably hit on the exact fix. I remember seeing on early copy machines, a strand of metallic tinsel that was stretched above the paper feed...
