GB/T 22821-2008
光学字符阅读纸
Optical character reader paper
2008-12-30
DIN 66223-2
Fonts for optical character recognition; format for document reader
光学字符识别字体；文档阅读器的格式
1978-01-01
DIN 66223-4
Fonts for optical character recognition; format for page reader
光学字符识别字体；页面阅读器的格式
1978-01-01