GenA Koburi Mincho

About Genakoburi Mincho

This Gena Koburi Mincho was improved on Amazon Kindle Paperwhite/Oasis to make it easier to apply Gena Koburi Mincho as much as possible.
Kindle officially has the ability to use non-built fonts by placing external fonts in the \Kindlefonts folder.
However, when using non-built fonts, there is a specification that refers to standard fonts if the font does not have italic glyphs, and to avoid this, I created a gen subfont.
It can also be used on other devices such as PCs and smartphones, but these devices have the ability to make the standard body look italic, so there is no benefit to using this font. We recommend using Genjo Koburi Mincho.
The name comes from the name "Gen" of the font of the main character, Akimasou/Amao (Amazon), and the subspecies "A". The mnemonics are bad.

How to use fonts

If you put two GenAKoburiMinchoVertical-**.ttf in the \Kindlefonts folder, you can set it for vertical writing, and if you put GenAKoburiMinchoHorizontal-**.ttf, you can set it for horizontal writing on your Kindle.
If you do not need it, delete these files.
Some books specify Mincho/Gothic font, and if a font different from the main text is specified, the built-in Mincho/Gothic font will be loaded. This is an unavoidable specification.
Note that if these .ttf files are combined into .ttc files, bold and italic fonts will not work, so we do not recommend using them by modifying them into .ttc files.

Font Features

Regarding the standard (Regular), the glyphs from the original Genjo Koburi Mincho have not been changed at all. In order to be compatible with bold and italic fonts, we have limited the settings for font names, etc.
Italics are functions of fontforge, and the standard and bold are distorted at an angle of 13 degrees towards the end of the sentence. The distorted direction is different for vertical and horizontal writing.

Update history

• ver. 3.01 (2023/03/21)
  • Change vertical font tilt (13 degrees to 10 degrees)
  • Fixed an error in OS2_Panose lines
• ver. 3.00 (2023/03/12)
  • Change Japanese font name
  • Remove hints
  • OS2_Panose and TTF name review
  • Fixed the tilt direction of U+210A in vertical font
  • Renewed development environment
    • Ubuntu 22.04
    • fontforge 20220308
    • ttfautohint 1.8.3
    • Python 3.11
• ver. 2.00 (2022/05/22)
  • Bold font has been deleted. (Since Kindle Paperwhite (11th generation) ver.5.14.3.0.1 has the ability to display Regular fonts like Bold, we have removed the Bold fonts that are not based on the genus.)
  • Regarding vertical fonts, we have reviewed the tilt direction of all glyphs based on Unicode Vertical Orientation Revision 17.
  • We have reviewed the algorithm for creating Oblique fonts. (The traditional method of making the slope was not properly applied, and the slope could be amplified many times, but this review has improved it.)
  • We have revised the way vertical glyphs are displayed. (Revived the vertical glyphs and deleted the Lookups.GSUB.vrt2 table instead.)
  • I've upgraded the Fontforge version. (FontForge-2020-11-07(FontForge 20th Anniversary Edition) => FontForge-2022-03-08)
• ver. 1.01 (2021/07/29)
  • The tilt direction of Greek, Cyrillic, and some symbols in vertical fonts have been corrected.
• ver. 1.00 (2021/07/24)
  • First edition

license

It will be distributed under the SIL Open Font License 1.1. It can be used for free, regardless of personal or commercial use, and can be redistributed, embedded in software, or modified.
For more information about other disclaimers regarding use, please refer to SIL Open Font License 1.1. (Japanese site link)
The font creator is not responsible for any events that occur due to the use of this font. Please use it at your own risk.
"Reserved font names" are "GenA" in Japanese and "GenA" in alphabetical notation.
If you have any issues with this font, please contact Github Issue or Twitter. Please refrain from contacting Okoneya.

Acknowledgments

Adobe-Fonts, who distributes Genno Mincho/Gennokaku Gothic, distributed Gennokaku Gothic, distributed Gennokaku Gothic, and distributed Gennokaku Gothic software o_vmtx-fix, and explained how to modify Genno Mincho/Gennokaku Gothic on fontforge, and we would like to take this opportunity to thank wakufactory, who has published an e-book that checks the display of each glyph.

reference

Memo from the creation of Genakoburi Mincho
fontforge Module attributes
OS/2 — OS/2 and Windows Metrics Table
Unicode Vertical Orientation Revision 17