Patent ID: 7667844
Filing Date: 2010-02-23
Classification: B41F,G01J,H04N

Abstract:
1. A line sensor comprising: a light source section for irradiating light of a plurality of colors to an inspecting object, said light source section having a plurality of light sources for each of said plurality of colors; and a light-receiving section for detecting reflected light from said inspecting object, said light-receiving section having a plurality of light-receiving sensors disposed in a row in a width direction of said inspecting object, said plurality of light sources being disposed in two rows so that said light-receiving section is interposed between said two rows; wherein the light sources of said plurality of colors are divided into a first color light source group and a second color light source group; and wherein first disposition patterns, in which said light sources of said first color light source group are disposed in one of the two rows of said light source section and said light sources of said second color light source group are disposed in the other row, and second disposition patterns, in which said light sources of said second color light source group are disposed in said one row and said light sources of said first color light source group are disposed in said other row, are alternately disposed in a row direction, and are disposed so as not to overlap when viewed along a direction perpendicular to the row direction.