OPTICAL WRITING DEVICE AND IMAGE FORMATION APPARATUS

• Main Authors: YOKOTA SOTARO, WATANABE YOSHIKAZU, IIJIMA NARIYUKI, UEMURA TAKANORI
• Format: Patent
• Language: English; Japanese
• Published: 20.08.2020
• Subjects: CINEMATOGRAPHY; CORRECTION OF TYPOGRAPHICAL ERRORS; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; MAGNETOGRAPHY; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To provide a technique for making a quality of images to be formed uniform even when an environment for use changes in an optical writing device and an image formation apparatus.SOLUTION: In an image formation apparatus, a light-emitting element matrix includes 100 light-emitting elements arrayed in 10×10. Three states which are a state ST-1, a state ST-2 and a state ST-3 are set with respect to the light-emitting element matrix corresponding to the pixel of "lighting". An initial state is the state ST-1. When an atmospheric temperature of the light-emitting element exceeds a threshold T1, the state of the light-emitting element matrix is controlled to the state ST-2. When the atmospheric temperature of the light-emitting element exceeds a threshold T2, the state of the light-emitting element matrix is controlled to the state ST-3.SELECTED DRAWING: Figure 13 【課題】光書き込み装置および画像形成装置において、利用される環境が変化した場合でも形成される画像の品質を一定にするための技術を提供すること。【解決手段】画像形成装置では、発光素子マトリクスは、１０個×１０個で配列された１００個の発光素子を含む。「点灯」の画素に対応する発光素子マトリクスに対し、３つの状態ＳＴ−１，状態ＳＴ−２，状態ＳＴ−３が設定される。初期状態は、状態ＳＴ−１である。発光素子の雰囲気温度が閾値Ｔ１を超えると、発光素子マトリクスの状態は、状態ＳＴ−２に制御される。発光素子の雰囲気温度が閾値Ｔ２を超えると、発光素子マトリクスの状態は、状態ＳＴ−３に制御される。【選択図】図１３