 After the abdication of D. Pedro I, in 1832, the book trade suffered the economic effects of political uncertainty, and Plancher sold his firm to two countrymen on 9 June 1832.The buyers were Junio Constancio de Villeneuve and Réol- Antoine Mougenot, and July 15, 1834, Mougenot sold his share to Villeneuve, who has owned the first mechanical press in the southern hemisphere, after the first rotary and first Linotype.Its competitors were the "Typographia Nacional", "Paula Brito," "Laemmert", the "Typographia do Diário", and the printers Correio Mercantil and Correio da Tarde.