Re: Re: Brushless Servo

In a message dated 10/09/1999 6:08:42 PM Hawaiian Standard Time,
gregg@... writes:

<<<snip> Another source is the range of ink jet and laser printers.<snip>

Jim Gregg

>>

I remember seeing large servo's (or were they steppers?) driving the carriage
of the old Qume daisy wheel printers. I think DEC writers and others may
have had large motors too. Old IBM stuff had clutches and belt drives from
constant running jack shafts. Some of the larger IBM line printers had very
large steppers driving the paper through the machines. Older hard disk drives
often had band drives or lead screws on steppers moving the head back and
forth just like the old 8 inch floppy's. Some had voice coil style servos. (
basically a linear motor) Large drum plotters often have servo's or steppers
in them also. Hopefully others can add to the machines we can look through.

Peter
PT Engineering Co.