“this was confirmed by de Queiroz”
Professor de Queroz actually worked for Xerox in the imaging department during the time when MRC was first being developed.
From his C.V.
“Xerox Corporation (1994-2002) Digital Imaging Technology Center, Webster, NY, USA. Member of the Research Staff. Duties include research in new digital image processing and compression systems for color printing systems.”
http://image.unb.br/queiroz/resume/Curriculum_Vitae.pdf
Good find!