Odyssey How to disable margins when reading a manga ?

[LeVraiRoiDHyrule]

Hi,

I recently received an old Cybook Odyssey HD reader, from a friend that got a more expensive one.

It works well, and now I'm trying to read mangas with it. Most of my mangas are in .cbr format, and the reader only support .epub so I used Kindle Comic Converter to convert it. Here is the output file after conversion : https://1drv.ms/u/s!AhNGmCtr4NeUnI11SbFL9EajrWTfYw

Here are the results :

https://i.imgur.com/7sjJXk6.jpg

As you can see, there is margins around the picture. I'm looking to get full screen pages, with no margin at all.

There is no setting to disable completely the margins in the reader, I can only reduce them (on the picture it's with the littlest setting possible).

But there is no margin in the file, if you look at it you will see that there is no margin at all in it. So these margins are added by the reader.

But I'm nearly sure there is a setting for margins in the metadata of the .epub file, that tells the reader to add margins. How can I change it ?

Thanks in advance for your help.
VM