激光打印机工作原理.ppt
2000 Hewlett-Packard Company,内容,硒鼓技术介绍-单色工作过程技术发展彩色硒鼓,ARC/TEC/5T/01,2000 Hewlett-Packard Company,6 激光打印机打印过程,Charging 充电 充电滚轴均匀给在感光鼓冲上一层负电Imaging 成像-一束激光照射在感光鼓面上,中和负电荷形成图像.Development 显影-通过显影滚轴 给感光鼓面附着墨粉.Transfer 转印-墨粉转移到纸张上Fusing 加热-使墨粉固定在纸张上Cleaning 清除 清除硒鼓上剩余的墨粉.,2000 Hewlett-Packard Company,硒鼓切面图,充电滚轴,感光鼓,激光,加热滚筒,压力滚筒,转印滚轴,废粉仓,墨粉仓,墨粉清除片,Recovery blade,显影滚轴轴心(圆柱形磁铁),刮粉刀,搅拌棒,纸张运行路线,Developer sealing blade,加 热,墨粉剩余量检测金属线,2000 Hewlett-Packard Company,打印过程中各部件所起的作用,2000 Hewlett-Packard Company,成像过程 充电,充电:恒定的电流通过充电滚轴 PCR(Primary Charge Roller)给感光鼓OPC表面均匀充上负电荷清除:充电滚轴PCR同样将感光鼓表面残留电荷擦去.,残留电荷,2000 Hewlett-Packard Company,成像过程 感光,感光:激光束照射到感光鼓的部份会产生放电现象,在鼓面上出现潜在的图像.,2000 Hewlett-Packard Company,成像过程 显影,显影:从潜在图像到形成真正图像.墨粉被磁铁吸附在显影滚轴上doctor blade 帮助显影滚轴上的墨粉充上负电荷.感光鼓面上正电荷的部分会将充上负电荷的墨粉吸附过去,在鼓面上形成图像.,2000 Hewlett-Packard Company,成像过程 转印,转印:在感光鼓面上形成的图像转移到纸张上.转印滚轴充上正电荷,在纸张下面将墨粉吸附到纸上.,OPC,Transfer Roller,纸路,2000 Hewlett-Packard Company,成像过程 热溶,热溶:通过高温使墨粉融化并固定在纸上.热溶组件是由上方的加热滚轴和下方的压力滚轴组成的.,纸路,Pressure Roller,Upper fuser roller(hot),固定墨粉,未融化墨粉,2000 Hewlett-Packard Company,成像过程 清除,清除:将感光鼓 OPC 表面清除干净.清洁挡片将剩余墨粉收集到废粉仓 The recovery blade 防止剩余墨粉漏出来.,2000 Hewlett-Packard Company,单色磁鼓抛面图,2000 Hewlett-Packard Company,彩色打印机发展,Toner supply hopper,Doctor blade,Stirring blade,Developers(X4)+Carousel,2000 Hewlett-Packard Company,彩色打印机发展,Primary Charge Roller,OPC Drum,Waste hopper,Wiper blade,OPC Cartridge,2000 Hewlett-Packard Company,colour printer complexity,2000 Hewlett-Packard Company,magenta,yellow,black,彩色图像的组成,cyan,2000 Hewlett-Packard Company,4-pass technology,in-line technology,2000 Hewlett-Packard Company,HP colour LaserJet 4600 all-in-one print cartridge,2000 Hewlett-Packard Company,hp colour toner,toner particle and human hair,2000 Hewlett-Packard Company,unfused toner/fused toner,refiller colour toner,
