Other

Tetsuya Ooba

Kazutaka Sato

Shigeru Obata

Akitomo Kuwabara

Yasushi Kinoshita

Kenji Asuwa

When initially routing a continuous web along a path, the web walks across the width of the path, and uneven tension occurs causing the web to break in some cases when printing tension is applied thereto. Further, uneven web tension is produced on the right and left of the web by excessive walk control resulting from an excessive deviation of the web from the target position of a walk controller, with the result that the web is crumpled and broken. These problems are solved by maintaining a web tension that is lower than the printing tension until the web position converges on the target position of the walk controller after loading of the web, thereby reducing the amount of correction by the walk controller and the amount of web lost in the preparatory phase before printing, with the result that excellent image quality free from crumple or breakdown is ensured.

Image forming apparatus

An image forming apparatus is provided in which a misregistration of an image forming-position due to a tension, acting on a continuous recording medium, and a fluctuation thereof, is corrected with a low-cost construction to provide an image of high quality. A pair of recording medium speed detection devices are provided upstream and downstream of an image forming section, respectively, and a misregistration correction amount is calculated from a detected recording medium feed speed so as to correct the image forming position.

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Hitachinaka, Japan

Tetsuya Ooba