IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To advance timing to start phase adjustment to adjust the phase relationship between a plurality of photoreceptors.SOLUTION: An image forming apparatus comprises: a gear 31K; a driving part 32K that drives the gear 31K; a phase detection part 47 that detects the phase of the ge...

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Bibliographic Details
Main Author KONNO YUYA
Format Patent
LanguageEnglish
Japanese
Published 01.06.2017
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To advance timing to start phase adjustment to adjust the phase relationship between a plurality of photoreceptors.SOLUTION: An image forming apparatus comprises: a gear 31K; a driving part 32K that drives the gear 31K; a phase detection part 47 that detects the phase of the gear 31K; a gear 31C; a driving part 32C that drives the gear 31C; and an engine control part 42 that, when receiving a print start instruction, controls the driving part 32K and driving part 32C so that the driving part 32K and driving part 32C rotate at a target rotation speed SPDtgt. The engine control part 42 determines the amount of phase shift DIFdtct between the gear 31K and gear 31C on the basis of estimation timing Tbs and detection timing Tdtct, and controls the driving part 32K or the driving part 32C on the basis of the determined amount of phase shift DIFdtct.SELECTED DRAWING: Figure 4 【課題】位相調整の開始タイミングを早くし、複数の感光体の位相関係を調整すること。【解決手段】ギア３１Ｋと、ギア３１Ｋを駆動する駆動部３２Ｋと、ギア３１Ｋの位相を検知する位相検知部４７と、ギア３１Ｃと、ギア３１Ｃを駆動する駆動部３２Ｃと、プリント開始指示を受信すると、駆動部３２Ｋ及び駆動部３２Ｃが目標とする回転速度ＳＰＤｔｇｔとなるように駆動部３２Ｋ及び駆動部３２Ｃを制御するエンジン制御部４２と、を備え、エンジン制御部４２は、推定タイミングＴｂｓと検知タイミングＴｄｔｃｔとに基づいて、ギア３１Ｋとギア３１Ｃの位相ずれ量ＤＩＦｄｔｃｔを求め、求めた位相ずれ量ＤＩＦｄｔｃｔに基づき、駆動部３２Ｋ又は駆動部３２Ｃを制御する。【選択図】図４
Bibliography:Application Number: JP20150226875