The Latin, Greek and Cyrillic characters are taken from the Source Sans Pro family, and adjusted to fit in with Chinese, Japanese and Korean text. For example, in the normal weight Latin and Latin-like characters are scaled to 115% of their original size, hence they appear larger than Source Sans Pro at the same point size. For the Chinese, Japanese and Korean characters, the underlying design was designed by Ryoko Nishizuka from Adobe. Multiple type foundaries drew the glyphs for different languages based on the designs: Changzhou Sinotype and Arphic Technology for Chinese, for Japanese, and Sandoll Communication for Korean. Ken Lunde of Adobe consolidated the glyphs and created the final font resources, while Google provided funding, testing resources and input. between different language versions of Source Han Sans Source Han Sans has five language versions: Simplified Chinese, Traditional Chinese for Taiwan, Traditional Chinese for Hong Kong, Japanese and Korean. Because of the different conventions and standards for each of the regions where the languages are used, the same character in Unicode may have a different shape for each of the language versions. The font family includes seven font weights: ExtraLight, Light, Normal, Regular, Medium, Bold, and Heavy. At its release, the fonts contains 65,535 glyphs, the maximum limit for CID-based fonts. The font current cover all of the characters in Unified Repertoire and Ordering of the Unicode Standard in version 2.001, but still doesn't cover all of CJK Compatibility Ideographs and extensions of the CJK Unified Ideographs.
Release
The 28-font OTC version of Source Sans Pro became available in version 1.001. Source Han Sans version 2.000 is a major update of the font family, the major changes include:
The Hong Kong flavor of Traditional Chinese was introduced.
The glyphs for bopomofo were redesigned.
The glyphs for half-width jamo were replaced.
Macintosh 'name' table strings were omitted.
Regular weight is style-linked to the Bold weight.
The deprecated 'hngl' GSUB feature was removed.
The 'vert' GPOS feature was added to support combining jamo in vertical writing.
Some glyphs for newer versions of Unicode were added.
Version 2.001 added a new character stands for Japanese era name Reiwa, and several glyphs for Hong Kong locale. Noto Sans CJK fonts are released as individual fonts separated by language and weight, or as OTC fonts containing all language variants separated by weight, or OTC fonts containing all weights separated by language, or a single OTC font containing all languages and weights.
Noto Sans Mono CJK fonts are monospaced versions of Noto Sans CJK, which includes glyphs in 4 language variants. Only regular and bold weight fonts were released. Noto Sans Mono CJK was introduced in Noto Sans CJK version 1.002 package. OTC fonts include Noto Sans Mono CJK, except for the region-specific Subset OTC fonts.