IMAGE FORMATION DEVICE AND MEDIA DETECTION DEVICE

• Main Author: SUGANO HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 03.12.2020
• 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

To provide a media detection device, which is configured so as to reduce media that are consumed together with performing calibration of the device.SOLUTION: An image formation device comprises: a media conveyance path; a conveyance processing part Pr2 that conveys media; an optical media detection device that detects an image-writing piece; a printing processing part Pr1 that forms an image on the image writing piece; and a calibration processing part Pr5 that calculates an index representing a relation in optical characteristics between media detection devices in a condition where there are no media, determines first currents for adjusting light emission in a condition where there is the image writing piece in the media detection device at an upstream side, and calculates second currents for adjusting light emission of the media detection device at a downstream side on the basis of the index and the first currents for adjusting light emission. As it is not necessary to position the image writing piece in the media detection device at the downstream side, media which are wasted can be reduced.SELECTED DRAWING: Figure 1 【課題】媒体検出装置のキャリブレーションを行うのに伴い消費される媒体の量を少なくすることができるようにする。【解決手段】媒体搬送路と、媒体を搬送する搬送処理部Ｐｒ２と、画像書込片を検出する光学式の媒体検出装置と、画像書込片に画像を形成する印刷処理部Ｐｒ１と、媒体がない状態で各媒体検出装置の光学特性の関係を表す指標を算出し、上流側の媒体検出装置に画像書込片がある状態で、第１の調整発光電流を決定し、指標及び第１の調整発光電流に基づいて、下流側の媒体検出装置の第２の調整発光電流を算出するキャリブレーション処理部Ｐｒ５とを有する。下流側の媒体検出装置に画像書込片を位置させる必要がないので、廃棄される媒体の量を少なくすることができる。【選択図】図１