Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-23T22:22:59.389Z Has data issue: false hasContentIssue false
  • English
  • Français

A Reflex Photocopying Box for Books1

Published online by Cambridge University Press:  31 May 2012

Thomas H. Stovell
Thomas H. Stovell
Affiliation:
Dominion Parasite Laboratory, Belleville, Ontario
Get access Rights & Permissions [Opens in a new window]

Extract

There are many types of commercial photo copying machines designed to make paper negatives or direct paper positives without the aid of a camera. These range from the costly rotary printers used in industry to the cylindrical type used in offices. Most of these produce excellent copies of single sheets; but with many of them there is considerable difficulty in making copies from books, the printing usually being blurred and the copy unevenly shaded. The physical pressure required to make perfect contact during exposure often damages larger books.

Type
Articles
Information
The Canadian Entomologist , Volume 83 , Issue 6 , June 1951 , pp. 147 - 151
Copyright
Copyright © Entomological Society of Canada 1951

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Contribution No. 2796, Division of Entomology, Science Service, Department of Agriculture, Ottawa, Canada.