Image forming apparatus including board to supply power to image forming unit and resin frame to support board

摘要

An image forming apparatus includes an image forming unit including a photosensitive drum configured to rotate about a rotation axis of the photosensitive drum, a resin frame configured to support a first end of the image forming unit in an axial direction of the photosensitive drum, a sub frame supported by the resin frame, a board supported by the sub frame and configured to supply a high voltage to the image forming unit, and a springy electrode disposed on the board and apart from edges of the board such that the springy electrode is compressed between the image forming unit and the board. The sub frame includes a plurality of first support portions disposed to support the board at at least three support points and a plurality of second support portions disposed to be supported by the frame at at least three support points.

主权项

1. An image forming apparatus comprising:
an image forming unit including a photosensitive drum configured to rotate about a rotation axis of the photosensitive drum and a developing device configured to supply developer to the photosensitive drum; a resin frame configured to support a first end of the image forming unit in an axial direction of the photosensitive drum; a sub frame supported by the resin frame; a board supported by the sub frame, the board configured to supply power to the image forming unit; and a springy electrode configured to electrically connect the image forming unit and the board, the springy electrode being disposed on the board and apart from edges of the board such that the springy electrode is compressed between the image forming unit and the board, wherein the sub frame includes a plurality of first support portions disposed to support the board at at least three support points and a plurality of second support portions disposed to be supported by the resin frame at at least three support points, wherein the first support portions of the sub frame supporting the board are located apart from edges of the board, wherein the second support portions of the sub frame are disposed outside an area, viewed in the axial direction, enclosed by the at least three support points of the first support portions, a first one of the second support portions is disposed on a first side of the area in a direction perpendicular to the axial direction and a second one of the second support portions is disposed on a second side of the area opposite to the first side of the area, and wherein the sub frame is sandwiched by the resin frame and the board.