Samsung Electronics Co., Ltd.

S-printing Solution Co., Ltd.

Young Jung Yun

Jin Soo Lee

Tae-young Kim

Hyoung-il Kim

Yong-Ho You

Young Bok Lee

Ji-young Byun

Seong-ho Shin

Ho-bin Hwang

Geon-hoon Kim

Hyoung Il Kim

An image forming apparatus includes an engine unit to perform an image forming job; an engine control unit to control the operation of the engine unit; a brushless direct current (BLDC) motor to drive the engine unit; a sensor unit to sense electric angle information and driving velocity information of the BLDC motor; a communication interface to receive a digital control command with respect to the BLDC motor from the engine control unit; a driving signal unit to generate a driving signal to control the BLDC motor; and a digital control unit to control the operation of the driving signal unit in a digital phase locked loop (PLL) manner for feedback controls the BLDC motor, based on the received digital control command, the detected electric angle information and the driving velocity information and a digital gain value as a control factor with respect to the BLDC motor.

Image forming apparatus, motor control apparatus and motor control method

An image forming apparatus to control a distance between paper sheets by sensing a surface pattern of fed paper and a method of controlling the same is provided. The image forming apparatus may include a paper transport unit configured to transport paper, a paper sensing unit disposed in a transport path of the paper and configured to sense a surface pattern of the transported paper, and a controller configured to control the paper transport unit to adjust a distance between paper sheets based on a change in the sensed surface pattern of the paper.

Image forming apparatus and control method thereof

Growing community of inventors

Suwon-si, South Korea

Young Jung Yun