Patent · US Active

Focus adjustment method of LED print head and image forming apparatus

US7978213B2 · kind B2 · utility

0Cited by

2References

16Claims

0Family size

Assignee

Konica Minolta Business Technologies, Inc. · JP

Inventors

Yasushi Koshimura · Tokyo, JP
Toru Yamaguchi · Tokyo, JP

Key dates

Filing date	Aug 15, 2007
Grant date	Jul 12, 2011
Priority date	—
Expiry date	Apr 10, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG03G2215/0409
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A focus adjustment method of an LED print head of an image forming apparatus, including steps of: setting one end with respect to a longitudinal direction of the LED print head on a first position where a distance between the photoconductor and the LED print head becomes shorter than a designed focal length, and setting other end with respect to the longitudinal direction of the LED print head on a second position where the distance between the photoconductor and the LED print head becomes longer than the designed focal length; outputting a pattern image having a predetermined resolution; and adjusting the position of the LED print head by moving each of the one end and the other end of the LED print head, based on information of the resolution of the outputted pattern image.

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