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US 2020/0049879 A1Published application
Print head
AssigneeFutaba Corporation
InventorTomoya SATO
Life of this patent
Estimating the term…
Abstract
A print head includes a light guide portion including a light blocking part having a lattice shape, and a plurality of light guide paths defined by the light blocking part, and a light emitting element array in which a plurality of organic EL elements emitting light incident to each light guide path are arranged. In the print head, the plurality of light guide paths of the light guide portion are designed to have an identical width of 30 μm or less, and thus it is possible to reduce exposure unevenness which is one of exposure characteristics.
Claims6
A print head emitting imaging light, comprising:
- a light guide portion extending in a first direction and including a light blocking part and a plurality of light guide paths, the light blocking part having a lattice shape when viewed from the first direction, the plurality of light guide paths defined by the light blocking part, or the light blocking part including a plurality of light guide paths disposed in parallel or disposed in a zigzag shape when viewed from the first direction and a light blocking part defining the light guide paths, the light blocking part and the light guide paths are alternately arranged in the light guide portion in a second direction perpendicular to the first direction;
- and
- a light emitting element array disposed on one side of the light guide portion in the first direction, a plurality of light emitting elements emitting light incident to each of the light guide paths are arranged in the light emitting element array at an equal interval in the second direction,
- wherein the plurality of light guide paths have an identical width of 30 μm or less in the second direction.
1 more element
Dependencies are inferred from the claim text.