公开(公告)号：US09116484B2

公开(公告)日：2015-08-25

申请号：US14014837

申请日：2013-08-30

Applicant: Konica Minolta, Inc.

Inventor： Kosuke Masumoto ,  Mineo Yamamoto ,  Shiro Umeda ,  Shigeru Yamazaki

IPC: G03G15/00

CPC classification number: G03G15/5004 ,  G03G15/5016

Abstract: An image forming apparatus comprises: a piezoelectric sensor that produces an variable output signal depending on the amount of infrared energy; a human body detecting device having a lens that forms a detecting area serving for detecting if the person enters; a peak detector that detects a peak of an output signal produced when the person enters the detecting area; an offset voltage judgment portion that judges if the output signal falls to the offset voltage after the peak; a moving direction judgment portion that judges the direction in which the person moves in the detecting area; and a mode controller that switches the power supply mode to a first mode if the power supply mode is found to be a second mode requiring less power than the first mode while the moving direction judgment portion judges that the person moves toward the image forming apparatus.

Abstract translation: 图像形成装置包括：压电传感器，其根据红外能量产生可变输出信号; 人体检测装置，具有形成用于检测人是否进入的检测区域的透镜; 峰值检测器，其检测当人进入检测区域时产生的输出信号的峰值; 偏移电压判断部，其判断输出信号是否下降到峰值之后的偏移电压; 移动方向判断部，其判断该人在检测区域内移动的方向; 以及模式控制器，如果在移动方向判断部分判断人向图像形成装置移动的情况下，如果发现电源模式是需要比第一模式更少的功率的第二模式，则将电源模式切换到第一模式。

公开(公告)号：US20140064774A1

公开(公告)日：2014-03-06

申请号：US14014837

申请日：2013-08-30

Applicant: Konica Minolta, Inc.

Inventor： Kosuke Masumoto ,  Mineo Yamamoto ,  Shiro Umeda ,  Shigeru Yamazaki

IPC: G03G15/00

CPC classification number: G03G15/5004 ,  G03G15/5016

Abstract: An image forming apparatus comprises: a piezoelectric sensor that produces an variable output signal depending on the amount of infrared energy; a human body detecting device having a lens that forms a detecting area serving for detecting if the person enters; a peak detector that detects a peak of an output signal produced when the person enters the detecting area; an offset voltage judgment portion that judges if the output signal falls to the offset voltage after the peak; a moving direction judgment portion that judges the direction in which the person moves in the detecting area; and a mode controller that switches the power supply mode to a first mode if the power supply mode is found to be a second mode requiring less power than the first mode while the moving direction judgment portion judges that the person moves toward the image forming apparatus.

Abstract translation: 图像形成装置包括：压电传感器，其根据红外能量产生可变输出信号; 人体检测装置，具有形成用于检测人是否进入的检测区域的透镜; 峰值检测器，其检测当人进入检测区域时产生的输出信号的峰值; 偏移电压判断部，其判断输出信号是否下降到峰值之后的偏移电压; 移动方向判断部，其判断该人在检测区域内移动的方向; 以及模式控制器，如果在移动方向判断部分判断人向图像形成装置移动的情况下，如果发现电源模式是需要比第一模式更少的功率的第二模式，则将电源模式切换到第一模式。