Patent ID: 8494426

Claim:
A laser fixing device comprising: a carrying section having a carrying member for carrying a recording material placed on a surface of the carrying member; a laser irradiation section; and at least one condensing lens, one of which is a final condensing lens being a last condensing lens that the laser light passes through among the at least one condensing lens; the laser fixing device fixing unfixed toner on the recording material to the recording material by melting the unfixed toner with laser light having been irradiated from the laser irradiation section and passed through the condensing lens, the recording material being carried by the carrying section in a direction perpendicular to an optical axial direction of the laser light, wherein the surface of the carrying member passes through a position satisfying a relation: f<L≦f+a, where L is a distance (mm) from a center of the final condensing lens to the position along the optical axial direction, f is a focal distance (mm) of the final condensing lens and a is a range (mm) along the optical axial direction from the focal position of the final condensing lens to a position, within which range fixability of toner is within a set permissible range.