The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2005
Filed:
Jan. 29, 2001
Markku Leskelä, Muijala, FI;
Esa Torniainen, Lohja, FI;
Jyrki Kettunen, Jalaskylä, FI;
M-real Oyj, Espoo, FI;
Abstract
A method for producing printed products, according to which method the surface of a sheet of paper or board is printed by the electrophotography technique or a similar printing method, wherein a dry finely-divided printing ink is transferred onto the printing base by means of an electric field. According to the invention, a paper or board is used the printing surface of which has a pigment-containing coating layer in which at least 20% of the pigment is made up of a hydrous pigment, such as gypsum, or in which at least 20% of the filler is made up of a hydrous filler, such as gypsum. When a gypsum pigment and/or a gypsum filler is used, the quality of the printed image is not sensitive to the control quantities used in the printing press. By means of the invention, a very regular print is indeed obtained, and so the invention is especially well suited for the printing of a sheet of a very matt paper or board.