Patent ID: 8692860

Claim:
A light emitting device comprising: a plurality of light emitting chips; each of the plurality of light emitting chips including a plurality of light emitting elements, and a plurality of transfer elements that sequentially specify, by sequentially entering an on-state, the plurality of light emitting elements as targets for control of illumination or non-illumination, each of the plurality of transfer elements being provided for a corresponding one of the plurality of light emitting elements, a mount board on which the plurality of light emitting chips are mounted; and a buffer amplifier that is provided on the mount board, and that outputs a transfer signal on the basis of an input transfer signal, the transfer signal being used to sequentially set the plurality of transfer elements, which are included in each of the plurality of light emitting chips, to be in the on-state, wherein the light emitting device further includes a storage member in which a plurality of groups of control data including correction values are stored, wherein the correction values are set so as to correspond to at least each of a plurality of driving units that drive the light emitting device, and are used to correct amounts of light for the plurality of light emitting elements in each of the plurality of light emitting chips, wherein the correction values are set and stored in the storage member in accordance with printing conditions, wherein the printing conditions include a first condition for monochrome printing and a second condition for color printing, wherein when a printing condition in the light emitting device is the monochrome printing, the correction values are stored in a first storage area of the storage member, and when the printing condition in the light emitting device is the color printing, the correction values are stored in a second storage area of the storage member, the second storage area is different from the first storage area, and wherein a number of bits of the correction values stored in the first storage area is less than a number of bits of the correction values stored in the second storage area.