Patent · US Active

LED printhead with relay lens to increase depth of focus

US9081322B2 · kind B2 · utility

2Cited by

4References

20Claims

0Family size

Assignee

Xerox Corporation · US

Inventors

Robert P. Herloski · Webster, US
Paul A. Hosier · Rochester, US

Key dates

Filing date	Dec 16, 2013
Grant date	Jul 14, 2015
Priority date	—
Expiry date	Dec 30, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/04054
WIPO fieldOptics
WIPO sectorInstruments

Abstract

LED printhead apparatus and printing systems are presented in which an LED array and a first high angle lens array are housed in an LED printbar assembly and a second low angle lens array is provided between the first lens array and a photoreceptor belt or drum in order to relay the output of the first lens array to the photoreceptor to provide a larger depth of focus and to reduce waterfront and tolerance issues near the photoreceptor.

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