公开(公告)号：US20160170362A1

公开(公告)日：2016-06-16

申请号：US14964396

申请日：2015-12-09

Applicant: KONICA MINOLTA, INC.

Inventor： Chao YE ,  Naoto SUGAYA ,  Munehiro NATSUME ,  Nobuhiro MATSUO ,  Seiichi KIRIKUBO

IPC: G03G15/00 ,  B65H5/06 ,  B65H3/06

CPC classification number: G03G15/6529 ,  B65H3/0669 ,  B65H5/06 ,  B65H5/062 ,  B65H2301/4452 ,  B65H2403/70 ,  B65H2403/72 ,  B65H2403/92 ,  B65H2511/22 ,  B65H2513/50 ,  B65H2515/702 ,  B65H2601/121 ,  B65H2601/122 ,  G03G15/6564 ,  G03G2215/00599 ,  G03G2215/0132 ,  B65H2220/01 ,  B65H2220/02

Abstract: An image forming apparatus includes an induced voltage detection portion configured to detect an induced voltage Vk in a motor; and an engagement/disengagement completion time detection portion configured to detect an engagement completion time and a disengagement completion time based on the induced voltage Vk detected by the induced voltage detection portion. The engagement completion time is a time at which engagement of a clutch is actually completed. The disengagement completion time is a time at which disengagement of the clutch is actually completed. A control portion determines a command timing based on any one of the engagement completion time and the disengagement completion time detected by the engagement/disengagement completion time detection portion, the command timing being a time at which a command is given to the clutch to perform an engaging operation or a disengaging operation.

Abstract translation: 图像形成装置包括：感应电压检测部，被配置为检测电动机中的感应电压Vk; 以及接合/分离完成时间检测部，其被配置为基于由感应电压检测部检测到的感应电压Vk来检测接合完成时间和分离完成时间。 接合完成时间是实际完成离合器的接合的时间。 分离完成时间是离合器的脱离实际完成的时间。 控制部基于由接合/分离完成时间检测部检测到的接合完成时间和分离完成时间中的任一个来确定命令定时，作为向离合器提供指令的时间的命令定时 接合操作或脱离操作。

公开(公告)号：US20180267447A1

公开(公告)日：2018-09-20

申请号：US15914277

申请日：2018-03-07

Applicant: Konica Minolta, Inc.

Inventor： Shigetaka KATO ,  Seiichi KIRIKUBO ,  Yutaka YAMAMOTO ,  Naoto SUGAYA ,  Nobuhiro MATSUO

IPC: G03G15/20 ,  G03G15/00

CPC classification number: G03G15/2039 ,  G03G15/5004 ,  G06K15/4055

Abstract: An image forming apparatus: acquires, before start of current supply to electric elements including heater, information indicating rated power of the heater and total consumption power of the electric elements excluding the heater; subtracts the total consumption power from upper power limit of the apparatus, and calculates maximum power not exceeding the rated power and remaining power thus subtracted; obtains duty ratio based on assumption of current supply corresponding to the maximum power according to pulse modulation, and determines whether the duty ratio falls within predetermined range; and controls, when the duty ratio falls within the range, drive circuit to supply alternating current by pulse modulation method, and when the duty ratio falls outside the range, to supply the alternating current by phase control method that temporarily interrupts the supply of the alternating current to the heater in half cycles of the alternating current.