Cover member, light scanning apparatus, and image forming apparatus

摘要

A cover member to be attached to a housing including a bottom portion and a side wall, the cover member including: a closing surface configured to close an opening surrounded by the side wall; at least three protruding portions protruding from the closing surface so as to be located on an inside of the housing; and a protection portion configured to protect a circuit board fixed to the side wall, the protection portion having: a first opposed portion opposed to the circuit board and provided to stand on the closing surface; a second opposed portion opposed to the circuit board and protruding with respect to the first opposed portion away from the circuit board; and a connecting portion configured to connect the first opposed portion and the second opposed portion, wherein a length of the at least three protruding portions is larger than a length of the first opposed portion.

主权项

1. A light scanning apparatus capable of operating with an image forming apparatus that includes a first photosensitive member, a second photosensitive member, a third photosensitive member, and a fourth photosensitive member, which are arranged side by side in order of the first photosensitive member, the second photosensitive member, the third photosensitive member, and the fourth photosensitive member, the light scanning apparatus comprising:
a first light source configured to emit a first light beam to expose the first photosensitive member; a second light source configured to emit a second light beam to expose the second photosensitive member; a third light source configured to emit a third light beam to expose the third photosensitive member; a fourth light source configured to emit a fourth light beam to expose the fourth photosensitive member; a deflection unit configured to deflect the first light beam, the second light beam, the third light beam, and the fourth light beam to scan the first photosensitive member, the second photosensitive member, the third photosensitive member, and the fourth photosensitive member, respectively; a housing to which the deflection unit is attached, the deflection unit being attached inside of the housing; and a cover member attached to the housing and configured to cover a space of the inside of the housing to which the deflection unit is attached, the cover member including:
a first opening through which the first light beam deflected by the deflection unit passes;a second opening through which the second light beam deflected by the deflection unit passes;a third opening through which the third light beam deflected by the deflection unit passes;a fourth opening through which the fourth light beam deflected by the deflection unit passes; andat least three protruding portions protruding toward the space of the inside of the housing,wherein the first opening, the second opening, the third opening, and the fourth opening are arranged side by side in order of the first opening, the second opening, the third opening, and the fourth opening corresponding to the order of the first photosensitive member, the second photosensitive member, the third photosensitive member, and the fourth photosensitive member, andwherein the at least three protruding portions are provided to cause the cover member to stand on a lower cover member in order to stack a plurality of cover members, at least one protruding portion of the at least three protruding portions protruding from between the first opening and the second opening in a direction perpendicular to a longitudinal direction of the first opening and the second opening, and at least two protruding portions of the at least three protruding portions protruding from between the third opening and the fourth opening in a direction perpendicular to a longitudinal direction of the third opening and the fourth opening.