When a TAB assembly is used in the transfer station of an electrostatic marking system, the blade used in the TABs becomes deformed or improperly aligned due to lateral movement of the clamp, held by rivets, which is used to maintain proper blade alignment. The feature signal represents a feature of the entered color image. The fused silica glass articles containing added aluminum exhibit improved internal transmission and decreased absorption change when irradiated with a laser. At least a part of the metal case passes through a through hole through a cylinder head cover covering the cylinder head and is disposed outside the cylinder head cover.