GB/T 23284-2009
Micrographics.Image mark(ship) used with 16 mm and 35 mm roll microfilm (English Version)

Standard No.

GB/T 23284-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 23284-2009

Scope

This standard specifies the location, size and density of single-size image marks and large, medium, and small image marks recorded on 16mm and 35mm microfilm for use in image mark retrieval systems. This standard applies to 16mm and 35mm microfilms that support retrieval systems.

GB/T 23284-2009 history

• 2009 GB/T 23284-2009 Micrographics.Image mark(ship) used with 16 mm and 35 mm roll microfilm