Canon Kabushiki Kaisha

Miho Nakayama

Hideki Adachi

Masanori Miyata

Takeshi Honjo

Tokuharu Kaneko

Toshiya Kanazawa

Shinichi Nakamura

Hiroshi Ozaki

Satoshi Kuroyanagi

Hisatsugu Tahara

Taisei Fukada

Mitsuharu Takizawa

An image forming apparatus includes: an original circulation unit for feeding originals placed on an original mounting unit one by one to an exposure site and after the exposure, returning the original to the original mounting unit; a copying unit for copying an original image to a recording sheet through exposure of the original at the exposure site; a first transport unit for feeding the recording sheet to a copy site; a first control unit for performing the original circulation by the original circulation unit for a set number of times to obtain the set number of copies; a second transport unit for feeding a specific sheet for each circulation of the originals; and a second control unit for controlling the first and second transport units to pre-feed the recording sheet and the specific sheet to be next supplied during a copy operation; wherein the second control unit does not perform the pre-feed of the recording sheet and the specific sheet during the first circulation of the originals by the original circulation unit, performs the pre-feed of the recording sheet and controls the first and second transport units to pre-feed the specific sheet, during a copy operation for the second and succeeding circulations of the originals.

Multi-color image forming apparatus

An apparatus and method for controlling the velocity of a motor controls the motor by fuzzy inferential reasoning in a transitional period when the motor is started, changed in speed, reversed or stopped. Such fuzzy control eliminates an increase in the length of the transitional period caused by a limitation in supply current under conventional PLL control and makes possible a rapid transition to a target velocity. A plurality of fuzzy rules are provided and one of these fuzzy rules is selected in accordance with the length of the previous transitional period, thereby suppressing the effects of load fluctuation and the influence of a fluctuation in torque caused by a rise in temperature. Therefore, the length for transitional control of a motor can be shortened and the apparatus can be reduced in size.

Method and apparatus for controlling motors

Image forming apparatus that feeds a specific sheet after a

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Tokyo, Japan

Miho Nakayama