IMAGE FORMING APPARATUS AND IMAGE FORMING PROGRAM

PROBLEM TO BE SOLVED: To provide an image forming technique capable of guaranteeing printing sequence and an interval of a first sheet of paper to be rear-side printed and a second sheet of paper to be front^side printed, while suppressing lowering of productivity during double-side printing.SOLUTIO...

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Bibliographic Details
Main Author OKUTSU AKIHITO
Format Patent
LanguageEnglish
Japanese
Published 05.03.2015
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Summary:PROBLEM TO BE SOLVED: To provide an image forming technique capable of guaranteeing printing sequence and an interval of a first sheet of paper to be rear-side printed and a second sheet of paper to be front^side printed, while suppressing lowering of productivity during double-side printing.SOLUTION: A printing process management section 40 generates a printing process in a page unit from a printing job. A printing sequence management section 41 determines printing sequence so that a printing process of the printing job instructing double-sided printing is executed by an interleaf control. A pre-feeding management section 54 determines whether or not pre-feeding is executed by using a specific pre-feeding condition as for the printing process of the double-sided printing and controls paper feeding timing according to the determination result. A first conveyance control section 51 controls conveyance of a paper from a paper feeding position to a position before transfer. A second conveyance control section 53 controls conveyance of a paper from the position before transfer to a paper ejection position. A paper re-feeding position control section 52 controls standby of paper at a paper re-feeding position and conveyance via the paper re-feeding position. 【課題】両面印刷時に生産性の低下を抑制しつつ、裏面印刷を行う対象の第1の用紙及び表面印刷を行う第2の用紙の印刷順番や紙間を保証可能な画像形成技術を提供する。【解決手段】印刷プロセス管理部40は、印刷ジョブからページ単位の印刷プロセスを生成する。印刷順管理部41は、両面印刷を指示する印刷ジョブの印刷プロセスがインタリーフ制御により実行されるよう印刷順番を決定する。プレフィード管理部54は、両面印刷に係る印刷プロセスにつき、所定のプレフィード条件を用いて、プレフィードを実施するか否かを決定し、当該決定結果に応じて、給紙のタイミングを制御する。第1搬送制御部51は、給紙位置から転写前位置までの用紙の搬送を制御する。第2搬送制御部53は、転写前位置から排紙までの用紙の搬送を制御する。再給紙位置制御部52は、再給紙位置における用紙の待機及び当該再給紙位置を経る搬送を制御する。【選択図】図4
Bibliography:Application Number: JP20140222015