US Patent No. 9,217,947

IMAGE FORMING DEVICE


Patent No. 9,217,947
Issue Date December 22, 2015
Title Image Forming Device
Inventorship Tomokazu Morita, Mishima (JP)
Takeyoshi Saiga, Tokyo (JP)
Yu Miyajima, Utsunomiya (JP)
Seiji Mishima, Yamato (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 9,217,947

1. An image forming device comprising:
a photosensitive body;
a charging unit configured to charge the photosensitive body;
an exposure unit configured to expose the photosensitive body; and
a developing unit configured to provide a developer to the photosensitive body,
wherein the exposure unit includes a lens group having a plurality of lenses and an element array which is arranged to face
the lens group and includes a plurality of pixels arrayed along the lenses,

the plurality of the pixels comprise a plurality of subpixels including an organic EL element,
a drive circuit includes a plurality of transistor circuits, and
the transistor circuits controls a number of the organic EL elements which emit light, and a luminance of light emitted by
the organic EL element in the plurality of the pixels.