RECORDING MATERIAL DETECTING APPARATUS AND AN IMAGE-FORMING APPARATUS

摘要

A recording material detecting apparatus includes a light guiding unit that allows first and second light to enter a surface of a recording material, respectively, in two directions which are not parallel; an imaging device that images a first light irradiated area and a second light irradiated area, on the surface of the recording material; and an output device that outputs information on a surface condition of the recording material based on an output of the imaging device. When viewed in a direction along the center optical axes of first and second light sources which are of the same type, the first and second light sources are arranged such that the respective reference lines of the rotational phases around the center optical axes are rotated in opposite directions by approximately the same angles from a line perpendicular to the direction where the first and second light sources are arrayed.

主权项

1. A recording material detecting apparatus, comprising:
a first light source that emits first light; a second light source that emits second light; a light guiding unit that allows the first light and the second light to enter a surface of a recording material respectively in two directions which are not parallel when viewed in a normal line direction of a surface of the recording material; an imaging device that images an area where the first light is irradiated and an area where the second light is irradiated, on the surface of the recording material; and an output device that outputs information on a surface condition of the recording material based on an output of the imaging device, wherein the second light source is a light source of which type is the same as that of the first light source, wherein when viewed in a direction along center optical axes of the first light source and the second light source, the first light source and the second light source are arranged such that respective reference lines of rotational phases around the center optical axes are rotated in opposite directions by approximately the same angles from a line perpendicular to a direction where the first light source and the second light source are arrayed.