Minolta Company, Ltd.

Konica Minolta Business Technologies, Inc.

Taiichi Oominami

Tomonobu Tamura

Toshio Sakata

Masayoshi Kuroda

Yuichi Yamamoto

Hiroyuki Maeda

Hideki Mekada

Tomiko Imoto

Masami Nakane

Kazuhiko Nakatsuka

Seiji Shibata

An image forming apparatus of the present invention includes a first identification section for identifying whether a print target page in a print target document is color or monochrome and its page attribute, a second identification section for identifying a system speed during printing of an immediately preceding page of the print target page, a third identification section for identifying a presence of a subsequent page of the print target page and its page attribute, and a system speed determination section for selecting a print mode in conformity to a monochrome/color discrimination result based on an identification result in the first identification section and determining a system speed of the print target page based on the page attribute identified by the first identification section and identification results in the second and third identification sections.

Image forming apparatus having monochrome and color print modes and a plurality of system speeds

A copying machine which has a function to contain sheets, each of which has an image on a first side, in a refeeding unit and refeed the sheets for forming an image on a second side. The refeeding unit has an intermediate tray, a pick-up roller for refeeding the sheets one by one and a containing section for feeding the sheets to the intermediate tray. Each of the sheets is fed into the intermediate tray by a first or a second roller of the containing section. The containing section is movable along a transporting way and set at such a position that the first and the second roller are positioned corresponding to the size of sheets to be contained in the intermediate tray.

Image forming apparatus and method comprising refeeding unit with

A sheet reversing apparatus which has a take-in path, a reversing path which extends from the take-in path in a substantially same direction, a take-out path which extends from a junction of the take-in path and the reversing path in a substantially perpendicular direction to the extending direction of the reversing path. A sheet is fed from the take-in path to the reversing path, and when the trailing edge of the sheet comes out of the take-in path, the sheet is fed back from the reversing path to the take-out path. In an entrance portion of the reversing path, a first reversing roller which is driven to rotate in a feed-back direction toward the take-in path and a second reversing roller which is capable of coming into contact with and moving away from the first reversing roller are provided. The second reversing roller is away from the first reversing roller until the trailing edge of a sheet comes out of the take-in path, and comes into contact with the first reversing roller after the trailing edge comes out of the take-in path.

Sheet reversing apparatus for a copying machine

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Chiryu, Japan

Taiichi Oominami