Marland <gemehabal@btinternet.co.uk> wrote:
> Roger Lynn <usenet@rilynn.me.uk> wrote:
>> On 04/01/2024 15:45, Sam Wilson wrote:
>>> Charles Ellson <charlesellson@btinternet.com> wrote:
>>>> Stencil duplicator, usually (or always ?) a Gestetner. The "master"
>>>> was the stencil. Mimeographs (mostly a US description) were the same
>>>> underlying technology (ink forced through a stencil) but most
>>>> drawings/photographs seem to be of simpler machines than the Gestetner
>>>> ones which tended to belt out copies at a fairly fast pace.
>>>
>>> Definitely a duplicator in casual speech. The masters were typed on a
>>> multilayer form where the top layer was a creamy colour, and possibly
>>> waxed. There were bits at the edge where the master was attached to the
>>> inky drum.
>>>
>>> There was a different technology whose name now escapes me which produced
>>> coloured (purple, red, blue, green(?)) copies, usually from handwritten
>>> originals. I think it may have been based on spirit dyes rather than
>>> printers inks.
>>
>> This appears to be a "spirit duplicator", which is probably what my primary
>> school had.
>>
>> https://en.wikipedia.org/wiki/Spirit_duplicator
>>
>
> Remember the aroma well, its a wonder that one of those compensation
> seeking law firms haven’t tried to whip up hysteria amongst the baby
> boomer generation to claim for health damage caused by sniffing the
> documents when they were at school.
>
> GH
>

We always thought it was great if we got the worksheets fresh from the
machine.