Light-emitting device including a light-up controller, driving method of self-scanning light-emitting element array and print head including the same
US8305415B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2010 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Jan 11, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/043
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The light-emitting device includes: a self-scanning light-emitting element array including: light-emitting elements; memory elements; and switch elements; and a light-up controller supplying a transfer signal setting ON of the switch elements, a memory signal causing, in a case where a switch element corresponding to a light-emitting element forming a group is set at the ON state, a corresponding memory element to be temporarily changed from OFF to ON if the light-emitting element is to light up, and the corresponding memory element to be kept in OFF if the light-emitting element is not to light up, and then causing the memory element having been temporarily changed to the ON state to be temporarily set at ON again, and a light-up signal for each group, the light-up signal causing a light-emitting element to be set at ON after causing a memory element to be set at ON.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.