Abstract: A record book or pad and a method of manufacturing such a book or pad has a stack of sheets in sets A. Each set A consists of a primary sheet P disposed between secondary sheets OS and US. Both faces of the sheet P are provided with a reactive coating 4 of duplicating material and each face of the secondary sheets OS and US which opposes the primary sheet P in the set is provided with reactive coatings 5 of duplicating material. When a marking is applied to the sheet OS for recording a message, pressure from that marking transfers through the sheet OS causing the coatings 4 and 5 between the sheets OS and P to inter-react and form a duplicate marking on a one face of the sheet P. Similarly when a marking is applied to the secondary sheet US, pressure from that marking transfers through the sheet US causing the coatings 4 and 5 between sheet P and US to inter-react and form a duplicate of the marking on the second face of the sheet P.

Abstract: A record book or pad and a method of manufacturing such a book or pad has a stack of sheets in sets A. Each set A consists of a primary sheet P disposed between secondary sheets OS and US. Both faces of the sheet P are provided with a reactive coating 4 of duplicating material and each face of the secondary sheets OS and US which opposes the primary sheet P in the set is provided with reactive coatings 5 of duplicating material. When a marking is applied to the sheet OS for recording a message, pressure from that marking transfers through the sheet OS causing the coatings 4 and 5 between the sheets OS and P to inter-react and form a duplicate marking on a one face of the sheet P. Similarly when a marking is applied to the secondary sheet US, pressure from that marking transfers through the sheet US causing the coatings 4 and 5 between sheet P and US to inter-react and form a duplicate of the marking on the second face of the sheet P.

Abstract: A record book or pad is manufactured with record sheets 2 and removable sheets 1 disposed in pairs. Image transfer element is provided for transferring manuscript notes 7, 7a from sheet 1 to sheet 2 in a pair. Each removable sheet 1 has a line of weakness 5 whereby a portion 1a of that sheet can be torn from a spine part 3 of the book or pad. Each portion 1a has on its underside surface a region 9 of low tack adhesive by which that portion can be attached temporarily to a receptive surface remote from the book. The low tack adhesive is preferably applied as a strip 8 with a width sufficient to extend from the spine part of each removable sheet 1, over the line of weakness 5, to provide the region 9 on the removable portion 1a.