Fujitsu Corporation

Takashi Inui

Yoshinori Wada

Katsumi Adachi

Hiroaki Yoshida

Masato Matsuzuki

Tamotsu Nishiura

Yukitoshi Takano

Yoshikazu Yamamoto

Daisuke Fujii

Eiichi Hanazato

A stepper motor controlling apparatus having a storing unit storing driving data for generating a stepper motor driving phase signal in each of plural controlling circuits, which share the driving data in the storing unit, thereby decreasing the total amount of the driving data. It is therefore possible to minimize the required capacity of the storing unit required for the driving data.

Stepper motor controlling apparatus

The present invention aims at providing a method of controlling a post-processor connected with an image-forming device that utilizes a conventional image-forming device and post-processing unit, and does not necessarily require to consistently form a sag in continuous paper. The inventive method of controlling the post-processor is carried out by the image-forming device that includes a transfer part and a fixing part, and conveys continuous paper. The image-forming device is connected with the post-processor that processed the continuous paper on which an image has been formed. The method comprises the steps of initiating an electrophotographic image-forming operation in the transfer part and the fixing part so that the image-forming device forms an image onto and conveys the continuous paper, initiating an operation of the post-processor so that the post-processor post-processes and conveys the continuous paper, stopping the operation of the post-processor on or before a completion of a transfer by the transfer part onto the continuous paper, conveying to the fixing part the continuous paper onto which the fixing part has finished transferring, and conveying to the transfer part the continuous paper onto which the fixing part finishes a fixation.

Method of controlling post-processor connected with image-forming device

This invention relates to a printing device that performs fixation after transfer, and which prevents the occurrence of no transfer even when feeding the paper backward starting printing from the next page after the final page. This printing device comprises image-formation units ( ) that transfer a toner image, a fixation unit ( ), and a control unit ( ). The control unit ( ) control adjustment of the moisture content on either the final page or leading page. In order to do that, it lowers the fixation energy of the fixation unit ( ) for the final page. There is a moisture-adjustment mechanism ( ) that reduces the moisture content of the leading page. Heat energy is applied to the leading page by the fixation unit ( ). This reduces the difference in the amount of shrinkage between the final page and the leading page, and prevents wrinkling of the leading page.

Printer for continuous forms with moisture adjustment

A device for printing on a continuous sheet includes a motor for carrying the continuous sheet, a switching unit for switching a minimum unit of control of the motor depending on a paper size of the continuous sheet, and a position-detection unit for detecting a rotational position of the motor. The device further includes a stop-control unit for controlling the motor to stop at a position matching a selected minimum unit of control based on the rotational position of the motor detected by the position-detection unit.

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Kawasaki, Japan

Takashi Inui