US 7,298,350 B2 · Image forming apparatus

Abstract

Image data is inputted from a data processing means 123 into storage means 124 so that light emitting elements of one line 128a of a light-emitting element (yellow) line head 128 are activated to expose pixels on an image carrier according to an output signal form a shift resistor 124a. The image carrier is moved in the direction of arrow X in such a manner that the pixels reach a position corresponding to the light emitting elements in a next line 128b. At this point of time, the image data are transmitted to a shift resistor 124b and then outputted to the line 128b so as to expose the pixels again. The image data are transmitted among the shift resistors sequentially by moving the image carrier, thereby sequentially repeatedly expose the same pixels.

Claims52

Dependent claims

An image forming apparatus comprising:

an image writing means employing organic EL elements;
a direct current voltage applying means for applying a direct current voltage to said organic EL elements;
and a control means for said direct current voltage applying means;
wherein
said control means controls said direct current voltage applying means to apply a direct current voltage (Va), higher than 0V and lower than a threshold voltage, to said organic EL elements during non-printing, and
at the start of said image writing means, said direct current voltage (Va) is applied to said organic EL elements and then the image writing means is shifted to the printing state.

3 more elements

Dependencies are inferred from the claim text.

Image forming apparatus

Life of this patent

Image forming apparatus

Life of this patent

Abstract

Claims52