IMAGE FORMING APPARATUS

• Main Author: ICHIHASHI TAKAO
• Format: Patent
• Language: English; Japanese
• Published: 03.12.2015
• Subjects: CINEMATOGRAPHY; CONVEYING; CORRECTION OF TYPOGRAPHICAL ERRORS; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; MAGNETOGRAPHY; PACKING; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; STORING; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To enable reprint where wasted paper is kept to the minimum in a simple operation even when such printing error that a paper cassette storing backing paper is selected in error at the time of performing double-sided printing, and printing is doubly performed on the printed surface of the backing paper, is caused.SOLUTION: A movement control part makes a paper feeding part alternately feed paper stored in a paper cassette and paper set in a manual insertion tray when paper discharged to a discharge tray after performing double-sided printing is set in the manual insertion tray. The movement control part makes an image forming part form an image doubly formed on an image-formed surface when the image is formed on both sides of the paper, on the paper fed from the paper cassette, if the paper stored in the paper cassette is fed, and discharges the paper to the discharge tray without making the image forming part form any image when the paper set in the manual insertion tray is fed. 【課題】両面印刷を行う際に誤って裏紙が収容された用紙カセットが選択され、裏紙の印刷済みの面に重ねて印刷されたミス印刷が発生した場合であっても、簡易な操作で無駄となる用紙を最小限に留めた再印刷を行うことができる。【解決手段】動作制御部は、両面印刷の実行後に排出トレイに排出された用紙が手差しトレイにセットされた場合に、給紙部に、用紙カセットに収容された用紙と手差しトレイにセットされた用紙とを交互に給紙させる。そして、動作制御部は、用紙カセットに収容された用紙が給紙された場合に、画像形成部に、用紙の両面に画像が形成される際に画像形成済みの面に重ねて形成された画像を用紙カセットから給紙された用紙に形成させ、手差しトレイにセットされた用紙が給紙された場合に、画像形成部に画像を形成させず、その用紙を排出トレイに排出させる。【選択図】図４