公开(公告)号：US20060120739A1

公开(公告)日：2006-06-08

申请号：US11006175

申请日：2004-12-07

申请人： Gary Denton ,  Roger Cannon ,  Eric Westfield

发明人： Gary Denton ,  Roger Cannon ,  Eric Westfield

IPC分类号： G03G15/00

CPC分类号： G03G15/045 ,  G03G15/04054 ,  G03G15/04072 ,  G03G2215/0119 ,  G03G2215/0412

摘要： The white vector—the voltage difference between white areas of a latent image on a photoconductive unit and a developer roller—may be independently adjusted at each photoconductive unit, allowing multiple image forming units to be driven from a shared power supply. The photoconductive unit is charged to a high voltage level relative to the developer roller, and selectively optically discharged to the desired white vector. The voltage of the discharged area may be measured, or may be calculated by increasing the developer roller voltage a predetermined amount, discharging the photoconductive unit until toner is sensed in white image areas, and then reducing the developer roller voltage. The white areas may be discharged using a lower optical power from the writing light source or a different light source, such as a laser, LED or electroluminescent source. A second laser may be of a different wavelength than a writing laser.

摘要翻译： 白色矢量 - 感光单元上的潜像的白色区域与显影辊之间的电压差可以在每个光电导单元处独立地调整，从而可以从共享电源驱动多个图像形成单元。 感光单元相对于显影辊被充电到高电压电平，并且选择性地光学地放电到所需的白色矢量。 可以测量放电区域的电压，或者可以通过将显影辊电压提高预定量来计算，排出感光单元直到在白色图像区域中感测到调色剂，然后降低显影辊电压。 可以使用来自写入光源或不同光源（例如激光，LED或电致发光源）的较低光功率来排出白色区域。 第二激光器可以具有与写入激光器不同的波长。