Printer for recording on a moving medium

H - Electricity – 04 – N

Patent

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Details

H04N 1/401 (2006.01) H04N 1/04 (2006.01)

Patent

CA 2569873

A method for forming a pixel (20) having a predetermined density onto a sensitized recording medium moving in a length direction energizes a pixel exposure source (14) to begin exposure at the leading edge (34) of a pixel (20) and for a first predetermined time interval. The pixel exposure source (14) is de-energized for a period depending on the predetermined density and on media transport speed, then re-energized at the termination of the period. The pixel exposure source (14) is then de-energized at the end of a second predetermined time interval to terminate exposure at the trailing edge (36) of the pixel (20), whereby spatial dimensions of each pixel (20) are maintained at variable transport speed or density of pixel (20).

L'invention concerne un procédé de formation d'un pixel (20) d'une densité prédéterminée sur un support d'enregistrement sensibilisé se déplaçant en longueur, consistant à mettre sous tension une source (14) d'exposition du pixel de manière à commencer l'exposition au niveau du bord avant (34) d'un pixel (20) et durant un premier intervalle temporel prédéterminé. La source (14) d'exposition du pixel est mise hors tension pendant une période en fonction de la densité prédéterminée et de la vitesse de transport des supports, puis remise sous tension à la fin de ladite période. La source (14) d'exposition du pixel est alors mise hors tension à la fin d'un second intervalle temporel prédéterminé de manière à terminer l'exposition au niveau du bord arrière (36) du pixel (20), les dimensions spatiales de chaque pixel (20) étant maintenues à une vitesse de transport ou à une densité variable du pixel (20).

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