Light beam scanning device
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorTutomu Saito
Life of this patent
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Abstract
A light beam scanning device for scanning by a light beam a member to be scanned which is subjected to relative continuous feeding, comprising a main-scanning means for causing said light beam to scan said member to be scanned in a direction vertical to the direction in which it is fed, and a correcting sub-scanning means for causing said light beam to scan said member to be scanned in the direction in which it is fed, whereby the loci of scanning of said light beam on a surface to be scanned of said member become substantially parallel.
Claims5
A light beam scanning device for scanning by a light beam a member which is fed with a specified speed, comprising a light beam source for emitting a light beam, main-scanning means including a first deflection signal generation circuit and first light beam deflection means, said first generation circuit generating a first deflection signal having a waveform which varies linearly with time and said first deflection means deflecting the light beam in accordance with the first deflection signal to scan the member in a direction perpendicular to the direction in which it is fed, and sub-scanning means including a second deflection signal generation circuit and second light beam deflection means, said second generation circuit generating a second light beam deflection signal having a waveform which includes at least a portion varying linearly with time and said second light beam deflection means deflecting the light beam in accordance with the second deflection signal to scan the member in a direction parallel to the direction in which it is fed, said main-scanning means together with said sub-scanning means making the loci of the light beam on the member parallel to each other.
Dependencies are inferred from the claim text.