Patent · US Active

Offset printing method

US9242449B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Axel Hauck · Karlsruhe, DE
Bernhard Buck · Heidelberg, DE

Key dates

Filing date	Apr 29, 2013
Grant date	Jan 26, 2016
Priority date	—
Expiry date	May 6, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41M1/06
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An offset printing method includes creating halftone dots corresponding to a printed image and formed of printing ink, on a surface of a transfer cylinder and transferring the halftone dots to a printing substrate while the transfer cylinder rotates about its longitudinal axis. A halftone value in a printed image on the printing substrate is adjusted to a desired value by modifying a halftone dot size. The offset printing method improves the quality of the printed image by increasing the halftone dot size by a desired amount by providing a relative offset between a device that creates the halftone dots and the surface of the transfer cylinder.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.