Johann Fust in the context of Peter Schöffer the younger

The Mainz Psalter was the second major book printed with movable type in the West; the first was the Gutenberg Bible. It is a psalter commissioned by the Mainz archbishop in 1457. The Psalter introduced several innovations: it was the first book to feature a printed date of publication, a printed colophon, two sizes of type, printed decorative initials, and the first to be printed in three colours. The colophon also contains the first example of a printer's mark. It was the first important publication issued by Johann Fust and Peter Schoeffer following their split from Johannes Gutenberg.

Peter Schöffer or Petrus Schoeffer (c. 1425 – c. 1503) was an early German printer, who studied in Paris and worked as a manuscript copyist in 1451 before apprenticing with Johannes Gutenberg and joining Johann Fust, a goldsmith, lawyer, and money lender.

Among his best-known works are the 1457 Mainz Psalter, the 1462 Bible or Biblia pulcra, and the 1484 Herbarius latinus.

A printer's mark, device, emblem or insignia is a symbol that was used as a trademark by early printers starting in the 15th century.

The first printer's mark is found in the 1457 Mainz Psalter by Johann Fust and Peter Schöffer. One of the most well-known old printer's marks is the dolphin and anchor, first used by the Venetian printer Aldus Manutius as his mark in 1502.