We use a tape coverslipper that we purchased used. It is not perfect, but it
does a good job overall. I would recommend a service contract if it is
reasonably priced. We take photos on every case, and the tape has not been a
problem. Also, our archived slides have held up well. Good luck on your
search for coverslippers.

Patti Loykasek
Phenopath Laboratories
Seattle, WA