US Patent No. 10,462,862

LIGHT SOURCE CONTROL DEVICE AND IMAGE FORMING APPARATUS


Patent No. 10,462,862
Issue Date October 29, 2019
Title Light Source Control Device And Image Forming Apparatus
Inventorship Hayato Fujita, Kanagawa (JP)
Assignee Ricoh Company, Ltd., Tokyo (JP)

Claim of US Patent No. 10,462,862

1. A light source control device, comprising circuitry to:apply a threshold current, a first emission current, and a first correction current to a light source to drive the light source to emit light to form a first pixel, the first correction current correcting the first emission current during application of the first emission current to the light source; and
apply the threshold current, a second emission current, and a second correction current to the light source to drive the light source to emit light to form a second pixel, the second correction current correcting the second emission current during application of the second emission current to the light source,
wherein the circuitry calculates a value of the second correction current by multiplying a value of the first correction current by a ratio of a value of the second emission current to a value of the first emission current, the value of the second emission current being greater than the value of the first emission current.