On 11/10/2016 11:05 AM, Tony Duell wrote: > Strangest thing I have seen on a Diablo 630 chassis. A Sanders 700. > That's a 7 pin dot matrix printer with the printhead in place of the > daisywheel of the 630. Same carriage/paper feed mechanism. It takes > plug-in ROM cartridges for the fonts, and does 8 passes of the head > for some of them.
It was a rather incestuous community back then. One thing that our printer designers were well aware of and referred to, were the Sanders patent applications. A lot later printers used a stepper for horizontal positioning; we used a rather expensive DC motor with a precision (etched glass) optical encoder. We could do NLQ with no more than 3 passes, although the speed dropped considerably on the denser (downloadable) fonts. It pretty much mandated a film ribbon to get any degree of sharpness. --Chuck
