US Patent 11438465 Ambient lighting indicating machine status conditions

A display device is connected to the exterior of a document processing device. The display device includes a screen positioned to display in a first direction away from the exterior. Lights are connected to the display device. The lights are positioned to emit light in second direction toward the exterior of the document processing device. A processor is operatively connected to the display device and the lights. The processor is adapted to control the lights to emit corresponding lighting of a graphic item appearing on the screen.