Light scanning unit, method of detecting failure of synchronization signal, and electrophotographic image forming apparatus using light scanning unit

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EP 2 763 389 B8

(12)	CORRECTED EUROPEAN PATENT SPECIFICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	25.12.2019 Bulletin 2019/52

(45)	Mention of the grant of the patent:
	20.11.2019 Bulletin 2019/47

(21)	Application number: 14152176.5

(22)	Date of filing: 22.01.2014

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International Patent Classification (IPC):

H04N 1/028^(2006.01)
H04N 1/113^(2006.01)
H04N 1/053^(2006.01)

H04N 1/047^(2006.01)
G06K 15/12^(2006.01)
G03G 15/043^(2006.01)

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Light scanning unit, method of detecting failure of synchronization signal, and electrophotographic image forming apparatus using light scanning unit

Lichtabtasteinheit, Verfahren zur Erkennung des Defekts eines Synchronisationssignals und elektrofotografische Bilderzeugungsvorrichtung mit Lichtabtasteinheit

Unité de balayage de lumière, procédé de détection de défaillance d'un signal de synchronisation et appareil de formation d'image électrophotographique utilisant une unité de balayage de lumière

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

31.01.2013 KR 20130011489

(43)	Date of publication of application:
	06.08.2014 Bulletin 2014/32

(73)	Proprietor: Hewlett-Packard Development Company, L.P.
	Spring, TX 77389 (US)

(72)	Inventor:
	Hwang, Ho-hyun Gyeonggi-do (KR)

(74)	Representative: Taor, Simon Edward William
	Venner Shipley LLP 200 Aldersgate London EC1A 4HD London EC1A 4HD (GB)

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References cited: :

EP-A1- 1 085 743
EP-A2- 0 366 037
JP-A- 2004 163 666

EP-A1- 1 970 748
JP-A- 2002 341 272
JP-A- 2007 226 129

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).