From a recently unearthed copy of Manga Super Techniques dating back to the early 90s, here are four random scans addressing the topic of inking:
Scan #1: Always preferred the “maru” pentip (at the bottom), myself.
Scan #2: Feel kinda bad that I never mastered the art of inking speedlines with a dip pen, as seen at left. (Then again, line-weight variation is possible with a tech pen, through it can be a tad time-consuming.) Also, check out the three variations on speedline usage at right, featuring varying degrees of how much the characters “pop” from the background.
Scan #3: Note the “ruler lift” technique at the bottom; that’s a clever but somewhat challenging way to handle things when your tools lack a raised “inking edge.”
Scan #4: Used this “pushpin” technique a few times myself, as a means to counteract seemingly inevitable “drift-off” from the speedlines’ vanishing point. The pushpin doesn’t work quite so well, howeva, if your drawing surface happens to be harder than wood… My own metal-topped drafting table precludes this approach.