# ISO 446:1991 — Withdrawn and superseded ISO standards

For ISO 446:1991, item title is Micrographics — ISO character and ISO test chart No. 1 — Description and use; status code is 9599; successor is ISO 446:2004; withdrawn / published date is 1991-02-14, recorded from its source on 2026-08-05.

- **Identifier:** ISO 446:1991 _(verified: appears in the quote below)_
- **Item title:** Micrographics — ISO character and ISO test chart No. 1 — Description and use _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 446:2004
- **Withdrawn / published date:** 1991-02-14 _(verified: appears in the quote below)_

## What the source says

> 4465,IS,,ISO 446:1991,Micrographics — ISO character and ISO test chart No. 1 — Description and use,Micrographie — Caractère ISO et mire ISO no. 1 — Description et utilisation,1991-02-14,2,['37.080'],ISO/TC 171/SC 1,9599,"[4448,4464]",[36140],"['en','fr']",5,"<p>Applies to the quality testing of microimages produced with a given micrographic system and allows to determine the potential legibility of documents recorded with that system. Annex A gives optional features for ISO test chart No. 1. This second edition cancels and replaces the first editions (ISO 435:1975 and ISO 446:1975), which have been merged into a single International Standard.</p>"

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).