Patent · US Active

Register sensor

US7637210B2 · kind B2 · utility

4Cited by

5References

4Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Wolfgang Geissler · Bad Schönborn, DE
Christopher Riegel · Bruchsal, DE
Frank Schumann · Heidelberg, DE

Key dates

Filing date	May 3, 2005
Grant date	Dec 29, 2009
Priority date	—
Expiry date	Jun 1, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F33/0081
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An apparatus in a machine for processing printing material has a register sensor for register measurement between at least two color separations of a printed image printed above one another on a printing material. The register sensor registers optically deviations between two color separations lying one above the other on the printing material and forwards the deviations onto a computer. The apparatus includes register marks to be measured by the apparatus. The apparatus is distinguished in that the register sensor contains at least one photodiode having at least two quadrants, and in that the largely rectangular evaluation areas of the photodiode are aligned obliquely in relation to the edges of the conveyed printing material.

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