公开(公告)号：US20010012111A1

公开(公告)日：2001-08-09

申请号：US09014296

申请日：1998-01-27

Applicant: HEWLETT-PACKARD COMPANY

Inventor： EMAD M. AWADALLA ,  THOMAS CAMIS

IPC: G06F015/00 ,  B41B001/00 ,  G06K001/00 ,  B41J001/00

CPC classification number: H04N1/4056 ,  G03G15/0849

Abstract: A method and apparatus for developing a pixel in an image forming device includes split developing the pixel using a split sub-pixel modulation technique. Split development provides for at least two non immediately adjacent areas of the pixel to be developed more fully than an area in between the two non immediately adjacent areas. In the context of a laser printer, the laser is sub-pixel modulated at least twice upon the electrophotoconductive drum for selected pixels, thus effectuating a reduced discharge of the drum and reduced subsequent development of toner mass thereon. This controlled amount of developed toner mass reduces toner waste and toner scatter while maintaining image integrity.

Abstract translation: 用于在图像形成装置中显影像素的方法和装置包括使用分割子像素调制技术对像素进行分割。 分割显影提供像素的至少两个非直接相邻的区域比两个非紧邻区域之间的区域更完整地开发。 在激光打印机的上下文中，对于所选择的像素，激光器在电子感光鼓上被亚像素调制至少两次，从而实现鼓的减小的放电并减少其上的调色剂质量的随后的显影。 显影的调色剂质量的这种受控量减少了调色剂废料和调色剂的散射，同时保持了图像的完整性。