Patent ID: 8625121
Filing Date: 2014-01-07
Classification: H04N

Abstract:
1. An image reading device, comprising: a light emitting portion; a stick-like light guiding member, of which end portion is disposed to face the light emitting portion; a holding member configured to hold the light emitting portion and the light guiding member; and a case member to which the holding member is attached, wherein the holding member includes: a light reflecting portion; a first holding portion configured to hold the light emitting portion such that an optical axis thereof is aligned with a main scanning direction; a second holding portion configured to cause the light guiding member to be positioned with respect to the light reflecting portion, and to hold the light guiding member such that a central axis thereof is substantially coaxial with the optical axis; a first positioned portion that is formed at one end part of the holding member in the main scanning direction; and a second positioned portion that is formed at another end part of the holding member in the main scanning direction, and wherein the case member includes: a first positioning portion which is formed integrally with the case member and into which the first positioned portion is inserted, the first positioning portion being configured to restrict the first positioned portion thus inserted from moving in a direction transverse to the main scanning direction; and a second positioning portion which is formed integrally with the case member and into which the second positioned portion is inserted, the second positioning portion being configured to restrict the second positioned portion thus inserted from moving in a direction transverse to the main scanning direction.