Line head and image forming apparatus incorporating the same
AssigneeSeiko Epson Corporation
InventorsKatsunori Yamazaki, Yujiro Nomura, Kiyoshi Tsujino
Life of this patent
Estimating the term…
Abstract
In a line head, a plurality of element arrays arranged in a first direction. Each array includes a plurality of light emission elements arrayed in a second direction which is perpendicularly to the first direction. The light emission elements emit light for forming an electrostatic latent image on a photosensitive surface of an image carrier. A switcher activates the light emission elements in at least one of the element arrays while deactivating the others. A developer develops the latent image as a visible image with toner.
Claims8
A line head, comprising:
- a plurality of element arrays arranged in a secondary scanning direction, each array including a plurality of light emission elements arrayed in a primary scanning direction;
- and
- a first switcher, which activates the element array in at least one of the element arrays while deactivating the others, wherein
- the first switcher sequentially activates at least one of the element arrays with a predetermined order, and
- the first switcher comprises switching transistors.
A line head comprising:
- a plurality of element arrays arranged in a secondary scanning direction, each array including a plurality of light emission elements arrayed in a primary scanning direction;
- and
- a first switcher, which activates the element array in at least one of the element arrays while deactivating the others, wherein
- the first switcher sequentially activates at least one of the element arrays with a predetermined order,
- each of the light emission elements is provided as either an organic electroluminescence element or a light emitting diode, and
- the first switcher controls a potential at a cathode of each of the light emission elements.
A line head comprising:
- a plurality of element arrays arranged in a secondary scanning direction, each array including a plurality of light emission elements arrayed in a primary scanning direction;
- and
- a first switcher, which activates the element array in at least one of the element arrays while deactivating the others, wherein
- the first switcher sequentially activates at least one of the element arrays with a predetermined order,
- each of the light emission elements is provided as either an organic electroluminescence element or a light emitting diode, and
- the first switcher controls a potential at an anode of each of the light emission elements.
Dependencies are inferred from the claim text.