jog – To align sheets of paper into a compact pile.
joint – The flexible hinge where the cover of a casebound book meets the spine, permitting the cover to open without breaking the spine of the book or breaking apart the signatures; also called a hinge.
Jordan – Proper name for the beater on the paper machine. In the Jordan, the pulp is pulverized, causing the pulp and water to mix in a uniform manner.
junior carton – A package of reamed sealed, cut-size paper packed 8 to 10 reams per carton.
justify – Fitting a line of type to both margins.
