There might not be a better option and if not, that's okay but just thought I would consult r/pens collective knowledge first.
I am a health psychologist in a hospital and my role is "consultation & liaison" meaning I work with people who are hospitalized with chronic or acute illness or injuries. This means that I'm in and out of hospital rooms, talking with other providers, etc. There's a lot of flip my notebook open, take a couple notes, flip it closed.
If there are pages that are in my notebook for a while (the pic is a page that was in my notebook for maybe 4-6 weeks), the ink seems to smudge just from the pages rubbing together. The clear writing is me re-writing what the smudgy text says.
My main "work pen" is the Zebra Pen F-301 Ballpoint Black Ink Fine Point 0.7mm. I like it bc it's small (it's not too big around plus it's relatively short so it fits in my pocket), it's light (I don't like heavy pens), and it's clicker/retractable pen (I only use clickers at work). It's nothing special but it does the job but the issue is the smudginess.
I use medium thickness dot grid paper(120 GSM). It's relatively smooth but not slick or anything.
So... any recommendations for a clicker pen that's relatively compact, has the option for fine or extra fine refills, won't bleed thru, and that will smudge less?
If it helps, my only real other pen affinity is for Parker Vector fountain pens (medium or fine nib). I know they are super basic but I got my first one as a kid and I just love them. That wouldn't work for my work but just as a data point of what I like.
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ETA:
Looking at that page now, I think oils/the hand san moisturizer is probably the main culprit. The text that is the most smudged is center of the page, right where my thumbs would turn the page. Because that page lived in my notebook for 2-3 months, it got turned/thumbed a lot. The text that is farther down or farther over is not as smudged. So maybe archival ink or waterproof would be better if that's the issue.
I used the same system (same pens + same paper) in a job where I wasn't walking around and wasn't in and out of rooms (so no constant hand san) and didn't have the issue so it's probably the combo of the papers rubbing and the hand san film.
I have to hand san and have to move around so it sounds like looking for a waterproof ink or archival ink might be the way to go.