JB/T 6849-1993
Microphotography Technology Specifications for Microform Reader Screens (English Version)

Standard No.

JB/T 6849-1993

Language

Chinese, Available in English version

Release Date

1993

Published By

Professional Standard - Machinery

Status

Withdraw 2011-08

Latest

JB/T 6849-1993

Scope

This standard specifies the technical conditions for transparent microfilm reader screens. This standard applies to diffuse transmissive reader screens and diffuse reflective reader screens. This standard does not apply to directional reflective screens and other special purpose screens.

JB/T 6849-1993 history

• 1993 JB/T 6849-1993 Microphotography Technology Specifications for Microform Reader Screens