Maintaining consistent darkness levels produced by a photoconductive drum during the life of the photoconductive drum
US10197938B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2017 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Oct 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/751
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging device has a photoconductive drum with a surface that is charged and selectively discharged to create a latent electrostatic image of an image to-be-printed for attracting toner for transfer to a media. A memory of the imaging device stores energy density values for use by the laser beam that can be accessed by a controller according to a predetermined number of media imaged by the photoconductive drum. During imaging, the controller controls the laser beam based on the stored energy density values. The energy density of the laser beam is increased or decreased when the laser beam is scanned along the photoconductive drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.