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These represent a sampling of most of the pens I have used for making notations on the thin paper used to print Bibles. They are a fountain pen with red ink and an extra fine point, a dry mark pencil, a 0.2mm crafter's pen, and a red ballpoint.
Step 1The Problem
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This is a page from a Bible I use often. The paper is so thin that a faint image of the factory print from the other side of the page is almost legible. Although I did not make any notations on this page, I did highlight some cross reference listings with a yellow dry marker pencil. A dry marker pencil is good for highlighting, but useless for making one's own notations. Dry marker pencils come in quite a variety of colors. They need frequent sharpening, but there is no danger they will go through the paper.
http://www.bibledesignblog.com/2008/12/bleeding-through-the-sorry-state-of-bible-paper.html
I have had great results with Pigma Micron pens. They have a variety of tip sizes from .05 mm and up, as well as many colors. I use blue, black, orange and green. I have a thinline bible and for underlining I like the 0.3 or 0.5 size just fine and for writing I like the smallest .05 size.
I have used Pigma pens, but was disappointed in how soon they ran dry.
I used pencil on Topaz India Paper forty plus years ago, and it's still there without any apparent change. Is there a reason you don't use a 0.5 mm B lead?
Perhaps the shuffling of your professor's notes resulted in repeated rubbing of slightly textured paper on the graphite to the point of smudging or nearly erasing it. He would have been writing in an age before micro leads. It takes a lot of effort to make a solid line with an even slightly dull pencil. His point is well taken. Indelible ink would have been better in that situation.
A few years ago I did light fastness tests on Derwent's Graphitint colored pencils. The colors are beautiful and all more or less the same darkness as regular graphite. In less than ten days, through double pane windows, facing west, in December, in Seattle, many lost all color and were reduced to nothing but grays.
I have always been partial to black inks for most things, but red inks for underlining, etc. to contrast with black printed text. I know blue inks for fountain pens came in washable blue and in permanent blue. I would guess that your grandmother may have used the washable blue variety. In those days fountain pens had a reputation for burping ink and for leaking. Washable blue inks were popular as a protection against ruining clothing and other things that might be spattered with ink from an accident with a fountain pen.
I would like to use a pen that does not bleed through at all, but when I look again at underlinings and notations I have made with red ink and my extra fine point fountain pen, the bleed through on thin paper is on a level comparable with that of the original ink used to print the volume's text on the other side of the page.
To see if your ink is actually bleeding through (being absorbed through) the paper, try putting a black piece of paper behind part of a page of your Bible. If your notes on the back of the page don't show up as darker than what would normally by white space on the page in the area that has the black paper under it, it may be that the paper is just very translucent. You may be experiencing 'show through' of dark values. Red, black, dark blue, brown, and purple have very similar dark values. Using a lighter value color of ink might help.
I prefer underlining to highlighting in texts. Berol Prismacolor colored pencils work well for me because they are soft enough to leave a mark easily. There is no bleed through in regular books. (Dark purple on the last page of my Bible did show through like the original printed ink.) In texts, colors with lighter values work better for me. .. yellow ochre, orange, canary yellow, bright green. I'll try some of those later and let you know about show through. If anyone inherits my Bible, they may wonder for a long time about all the colors on the last page.
I tried the black paper procedure you suggested. On one marking the red ink did not show through. On another it did a bit. Fountain pens perform differently according to whether the nib needs to be cleaned or the viscosity of the ink.
Even though I have an emotional preference for fountain pens, if I am honest with myself, the markings that have worked out best over all of the years would be those made with either a quality ball point, or the Koh-I-Noor pen. But, the Koh-I-Noor pen was a lot of bother, and I found mine to have been scratchy. The ball point that seems to have worked very well was a stick PaperMate with black ink. I was using those about 40 years ago.
Yes it can be thin, I've known of people roll cigarettes with hotel-bible pages (morally-corrupt as that may be)
Do you think testing pens on cigarette rolling-papers would be a good idea, if the paper-grade is a good match?
L
The German Bible Society published a little story about a man who accepted a free New Testament and told the giver he intended to tear the pages out for the purpose of rolling cigarettes. The giver said that was fine, but asked the man to promise he would read each page before he smoked it in a cigarette. By the time the man had read and smoked his way to the Gospel of John, he had become a believer. (The story was reported not to have taken place in Germany, but I do not remember where.)
I had heard that before. True or otherwise, it makes the point that books are for reading, with an aim to learn something.
L