Writing Individual Chapters: Yevamot 106b (Parshat Chalitzah)
Sirtut-Engraving of Lines below the text: Yevamot 106b; Gittin 6b, 7a [2x]
Writing a letter without first looking at it inside a text: Megillah 18b
Prohibition against speaking the Written Torah without a text: Temurah 14b
Prohibition against writing down parts of the Oral Tradition: Temurah 14b
The need to write down the oral Torah, uprooting a law, rather than have the Torah be lost, altogether: Temurah 14b
Writing down certain types of laws is like burning the Torah, and one who learns from such a text receives no reward: Temurah 14b
