Patent ID: 8908001
Filing Date: 2014-12-09
Classification: G03G,H04N

Abstract:
1. An image forming apparatus comprising: a plurality of photoconductors; an exposing unit that exposes the photoconductors to light beams to form an electrostatic latent image on each of the photoconductors; a developing unit that visualizes the electrostatic latent image with at least two colors of toner, first and second toner colors having first and second visual sensitivities, respectively, the first visual sensitivity being lower than the second visual sensitivity; a transfer unit that transfers the visualized image onto a recording medium; and a fixing unit that fixes the visualized image on the recording medium, wherein the exposing unit includes wherein the focusing elements include a first focusing-element group of at least two individual resin focusing members separated via a plurality of bosses that are distributed across a width of the individual resin focusing members as a positioning unit for height mounting references, at least one of the bosses being located within an effective area of the main scanning direction, and the at least two individual resin focusing members being aligned in a sub-scanning direction such that at least one of the two focusing members of the first focusing-element group is aligned with one of the light beams, wherein a first light beam corresponding to the first toner color passes through a first focusing member of the first focusing-element group, and wherein a second light beam corresponding to the second toner color passes through a second focusing member of the first focusing-element group, wherein the housing comprises resin, and includes a shielding member near the deflector so as to surround an entire circumference of the deflector such that the deflector is separated from the focusing elements by the shielding member to prevent heat generated along with rotation of the deflector from diffusing in the housing by air flow caused by rotation of the deflector, wherein the image forming apparatus further comprises: wherein the second focusing member is attached directly to the housing via a first set of bosses of the plurality of bosses and the first focusing member of the first focusing-element group is attached directly at an upper side of the second focusing member via a second set of bosses of the plurality of bosses when an orientation of the image forming apparatus is set as in a normal operation, so that an amount of heat transmitted by the first heat transmission path is larger than an amount of heat transmitted by the second heat transmission path.