# Do ptocopy machines emit radiationh **URL:** \ **Category:** Cecil's Columns/Staff Reports\ **Created:** [January 8, 2010, 12:45pm UTC](https://boards.straightdope.com/t/do-ptocopy-machines-emit-radiationh/524150 "2010-01-08T12:45:09Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![feenberg\_nber.org](https://avatars.discourse-cdn.com/v4/letter/f/e0b2c6/32.png) [@feenberg\_nber.org](https://boards.straightdope.com/u/feenberg_nber.org)\ **Post date:** [January 8, 2010, 12:45pm UTC](https://boards.straightdope.com/t/do-ptocopy-machines-emit-radiationh/524150/1 "2010-01-08T12:45:09Z")
[http://www.straightdope.com/columns/read/213/do-photocopy-machines-emit-radiation](http://www.straightdope.com/columns/read/213/do-photocopy-machines-emit-radiation) The interlock on high speed Xerox machines had another purpose. The per copy charge was higher for single copies than multiple copies of the same page. Thrifty secretaries learned to swap originals as fast as the copier would scan, thus fooling the charging mechanism inence the cover down detector. ---
**Author:** ![DSYoungEsq](https://avatars.discourse-cdn.com/v4/letter/d/c6cbf5/32.png) [@DSYoungEsq](https://boards.straightdope.com/u/DSYoungEsq)\ **Post date:** [January 8, 2010, 4:00pm UTC](https://boards.straightdope.com/t/do-ptocopy-machines-emit-radiationh/524150/2 "2010-01-08T16:00:46Z")
> [@feenberg\_nber.org](#): > > [Do photocopy machines emit radiation? - The Straight Dope](http://www.straightdope.com/columns/read/213/do-photocopy-machines-emit-radiation) > > The interlock on high speed Xerox machines had another purpose. The per copy charge was higher for single copies than multiple copies of the same page. Thrifty > secretaries learned to swap originals as fast as the copier would scan, thus fooling > the charging mechanism inence the cover down detector. And you have a citation for this interesting theory? 🙂 Welcome to the SDMB, by the way. 🙂