Edge emission type electroluminescent (EL) printer
US5138338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Aug 10, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1247
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An edge emission type EL printer having a line head constituted by an array of numerous edge emission type EL devices. One group of electrodes for the EL devices receive driving pulses from a first driver means, and the other group thereof get driving pulses from a second driver means as per emission control signals. This allows the EL devices to selectively luminesce, forming an electrostatic latent image on the circumference surface of a photosensitive body charged by a charger. The image is developed by a developer and transferred to a recording medium by a transfer machine. The emission control signals entering the line head are monitored so that when the absence of EL devices luminescing within one primary scanning line is detected from the monitoring, a driving pulse stopping means is activated to stop accordingly the driving pulses continuously applied to the EL devices by the first driver means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.