Image with Regular Thin Black Lines on Two Sides - How to Download Correctly?

[IGUPAYITI]

Hello, when I download from www.jstor.org with dezoomify-rs (need to use headers, see issue #173) the image has periodical thin black lines of one pixel width on bottom and right sides.
How can I avoid this error? Thank you.
For reference, the image that I'm trying to download without them (https://www.jstor.org/stable/community.15994580):

[DigitalCurator]

[Pl1997]

Hello,

I can confirm I have exactly the same problem on JSTOR !

Thanks in advance for any help you could provide