公开(公告)号：US20200296242A1

公开(公告)日：2020-09-17

申请号：US16816802

申请日：2020-03-12

Applicant: Konica Minolta, Inc.

Inventor： Akinori KIMATA ,  Tatsuya EGUCHI ,  Takeshi ISHIDA ,  Takashi WATANABE

IPC: H04N1/00 ,  B65H43/00 ,  B65H29/20

Abstract: A sheet conveyance device including: a conveyance roller that conveys a sheet; a motor that rotationally drives the conveyance roller at a constant speed; a central processing unit (CPU) that: periodically acquires temperature increase rates for the motor from a start of sheet conveyance, the temperature increase rates depending on magnitudes of effective current applied to the motor, the effective current depending on loads during sheet conveyance; and estimates a current temperature of the motor based on a cumulative value calculated from the temperature increase rates and time elapsed from the start of sheet conveyance; and a controller that executes a motor temperature control based on the estimated temperature of the motor.

公开(公告)号：US20160320742A1

公开(公告)日：2016-11-03

申请号：US15099061

申请日：2016-04-14

Applicant: Konica Minolta, Inc.

Inventor： Takeshi ISHIDA ,  Hokuto HATANO

IPC: G03G21/00

CPC classification number: G03G21/0094

Abstract: An image forming apparatus includes a photoreceptor, a charging unit, an exposing unit, a developing unit, a transfer unit, a lubricant supply unit, a cleaning unit and a lubricant removal unit. The lubricant supply unit supplies a lubricant to a surface of the photoreceptor and is disposed at a point which is an upstream side of the cleaning unit and a downstream side of the developing unit in a rotation direction of the photoreceptor. The lubricant removal unit removes the lubricant from the surface of the photoreceptor and is disposed at a point which is the downstream side of the cleaning unit and the upstream side of the developing unit in the rotation direction of the photoreceptor.

Abstract translation: 图像形成装置包括感光体，充电单元，曝光单元，显影单元，转印单元，润滑剂供应单元，清洁单元和润滑剂去除单元。 润滑剂供给单元向感光体的表面供给润滑剂，并且在感光体的旋转方向上设置在作为清洁单元的上游侧的点和显影单元的下游侧。 润滑剂去除单元从感光体的表面去除润滑剂，并且设置在清洁单元的下游侧和显影单元的上游侧的感光体的旋转方向上。

公开(公告)号：US20150028791A1

公开(公告)日：2015-01-29

申请号：US14332987

申请日：2014-07-16

Applicant: KONICA MINOLTA, INC.

Inventor： Takahiro TSUJIMOTO ,  Hideki NAKAMURA ,  Takeshi ISHIDA ,  Naoto SUGAYA ,  Akimasa ISHIKAWA

IPC: H02P8/12 ,  G03G15/00

CPC classification number: H02P8/12 ,  G03G15/06 ,  G03G15/5008 ,  G03G15/6529

Abstract: An image forming apparatus drives and rotates at least one of a photosensitive drum and a transport roller with use of a stepping motor in a multi-phase excitation mode. The image forming apparatus includes: a constant-voltage control unit controlling the stepping motor by applying a constant voltage for each phase; a constant-current control unit controlling the stepping motor by regulating an amount of current for each phase by a chopping control; a measuring unit measuring a chopping count of each phase on a per-step basis; a chopping count determination unit determining whether the chopping count of each phase is less than or equal to a predetermined count; and a control switching unit causing the constant-voltage control unit to control the stepping motor when the chopping count determination unit determines affirmatively, and causing the constant-current control unit to control the stepping motor when the chopping count determination unit determines negatively.

Abstract translation: 图像形成装置利用多相励磁模式中的步进电机来驱动和旋转感光鼓和输送辊中的至少一个。 图像形成装置包括：恒压控制单元，通过对各相施加恒定电压来控制步进电动机; 恒流控制单元，其通过斩波控制来调节各相的电流量来控制所述步进电动机; 测量单元，测量每个阶段的每个阶段的切碎计数; 斩波计数确定单元，确定每相的斩波计数是否小于或等于预定计数; 以及控制切换单元，其使得所述恒压控制单元在所述切断计数确定单元肯定地确定时控制所述步进电机，并且当所述切断计数确定单元判定为否定时，使所述恒流控制单元控制所述步进电机。

公开(公告)号：US20200148498A1

公开(公告)日：2020-05-14

申请号：US16681902

申请日：2019-11-13

Applicant: Konica Minolta, Inc.

Inventor： Takeshi ISHIDA ,  Tatsuya EGUCHI ,  Takashi WATANABE ,  Masayuki WATANABE ,  Akinori KIMATA

IPC: B65H37/04 ,  B65H43/06

Abstract: A stapling apparatus includes a sheet insertion portion that receives insertion of a sheet bundle, a stapler that staples the sheet bundle, a drive apparatus that drives the stapler, and a controller that controls the drive apparatus. The controller has the drive apparatus driven with first electric power when the drive apparatus operates in an on-line stapling mode in which the sheet bundle ejected from an image forming apparatus is stapled and has the drive apparatus driven with second electric power lower than maximum electric power that can be set as first electric power when the drive apparatus operates in a manual stapling mode in which the sheet bundle inserted through the sheet insertion portion is stapled.