Konica Minolta Business Technologies, Inc.

Masatoshi Ogawa

Hideki Nakamura

Kazutoshi Yoshimura

Akira Okamoto

Kazumichi Yamauchi

Yoshiki Katayama

Kenji Yamamoto

An image forming apparatus includes: a sheet conveyance section having a sheet storing member to store sheets that have been aligned in a prescribed placing direction, which conveys a sheet stored in the sheet storing member; an image forming section having an image carrier, which forms an image on the image carrier; an image transfer section which transfers the image formed on the image carrier onto a sheet conveyed by the sheet conveyance section; a winding detection section which detects whether or not the sheet conveyed by the sheet conveyance section is wound around the image carrier; and a controller which controls to instruct an operator to conduct a change operation of the placing direction of the sheets stored in the sheet storing member based on a sheet winding detection signal outputted from the winding detection section.

Image forming apparatus and image forming system with winding detection

An image forming apparatus provided with a sheet feeding tray to store sheets for image forming; a sheet feeding section to feed the sheets form the sheet feeding tray so as to supply the sheets for the image forming; and a control section to individually administer remaining sheets stored in the sheet feeding tray in advance and replenishment sheets replenished when the sheet feeding tray is replenished with the sheets in a state where the sheets stored in the sheet feeding tray in advance is remaining. Whereby, a JOB can be continued or aborted appropriately with reference to information and remaining amounts of remaining sheets and replenishment sheets in one sheet feeding tray, since the information and the remaining amounts are administered individually.

Image forming apparatus

There are provided a plurality of sheet feed trays in which sheets are stored, a sheet feeding section which enables a continuous sheet feeding of sheets stored in the above sheet feed tray, and a control section which controls the above sheet feeding section and has an auto tray switch function, and the aforesaid control section obtains information on an amount of sheets stored in the above sheet feed tray, during a continuous sheet feeding from the above sheet feed tray, and judges whether or not the amount of the remaining sheets in the above sheet feed tray satisfies the prescribed condition. In the case where the above prescribed condition is satisfied, the control section stops motion of sheet feeding from the above sheet feed tray while leaving sheets in the above sheet feed tray.

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Hino, Japan

Masatoshi Ogawa