Integral organic light emitting diode fiber optic printhead utilizing color filters
US6525758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2000 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Dec 28, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/46
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A compact light weight printhead capable of direct quasi-contact printing includes an OLED—Color Filter structure disposed on a fiber optic faceplate substrate. The OLED—Color Filter structure includes an OLED structure emitting over a broad range of wavelengths and color filter arrays that selectively transmit radiation in different distinct ranges of wavelengths. The printhead is designed for contact or quasi-contact printing printing. The printhead design ensures that the desired pixel sharpness and reduced crosstalk is achieved. Two possible different arrangements for the printhead are disclosed. One arrangement includes at least one array of OLED elements and at least one color filter array. Each color filter array in this arrangement includes at least one triplet of color filters, and each element in each the triplet is capable of transmitting radiation in a distinct wavelength range different from the distinct wavelength range of the other two color filters in the same triplet. In the second arrangement, the printhead includes at least one triplet of arrays of individually addressable Organic Light Emitting Diode (OLED) elements and at least one triplet of arrays…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.