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Inked Fabric Printer Ribbon: Tricresyl Phosphate, Castor Oil and Carbon Black Ink (Neidich, Underwood, US 2,139,092)
Ribbon inks made with plain oils went thin in warm weather and rancid with age, so the ribbon printed unevenly and soon dried out. Neidich replaced half the oil with tricresyl phosphate, which keeps the ink at an even thickness and does not oxidise.
Result: a fabric ribbon saturated with a non-drying black ink for typewriters and printers.
Source: Neidich, US 2,139,092 (Underwood Elliott Fisher, 1938). Not given: which fibre the ribbon is woven from (he says only an absorbent fabric), how the ink is put on. Picture drawn by Youblob.
Intermediate
2 hours
Instructions
1
1
Weigh the ink
Weigh the ink
Parts by weight: tricresyl phosphate 50, castor oil 50, carbon black 20, Prussian blue toning base 20. Neidich allows some variation.
Materials for this step:
Tricresyl Phosphate50 parts
Castor Oil (Cold-Pressed, Hexane-Free)50 parts
Carbon Black Powder20 parts
Prussian Blue20 partsTools needed:
Grinding Mill2
2
Grind the pigments into the oils
Grind the pigments into the oils
Grind the carbon black and Prussian blue with the tricresyl phosphate and castor oil in a mill until the colour is spread evenly through the ink.
Tools needed:
Grinding Mill3
3
Take an absorbent ribbon fabric
Take an absorbent ribbon fabric
Use a woven ribbon of absorbent fabric. Neidich does not say which fibre or width.
Materials for this step:
Uninked Ribbon Fabric1 as requiredTools needed:
Scissors4
4
Saturate the ribbon
Saturate the ribbon
Saturate the ribbon with the ink. Neidich says only that it is applied as usual. Ours: run it through the ink and squeeze it between rollers so it is evenly wet, not dripping.
Tools needed:
Dip Coating Roller PairMaterials
5- 50 partsPlaceholder
- Placeholder
- 20 partsPlaceholder
- 20 partsPlaceholder
- 1 as requiredPlaceholder
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