Led print head for electrophotographic printer
US6768507B2 · kind B2 · utility
1Cited by
1References
37Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2002 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Sep 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H29/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A light-emitting diode (LED) print head has a linear array of LEDs and device drivers for delivering current to each LED individually. An imaging lens system to create a real image of the LED array is provided in the form of a plurality of gradient index lenses and the LEDs each have emission cones closely matched to the numerical aperture of the gradient index imaging lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.