论文部分内容阅读
在美国的佳能公司已推出一台价值11000美元,据称是首创将数字扫描及数字处理与激光印刷机相结合的办公室复印机。这种佳能 Np-9030型复印机对需复印的文件图象扫描并使其数字化,然后将经处理的信号传输至复印机的激光印刷器。因图象印刷前为数字形式,故可用传统模拟复印机无法采用的方法操纵,速度为每秒30张。该系统的扫描头以256/mm~2象素即每张信纸15000×10~4象素的分辨率读出原件。由于图象密度高,该机能产生多达64种色调级差的半色调图象。
Canon Inc. in the United States has introduced a $ 11,000 worth of it, claiming to be the first office copier to combine digital scanning and digital processing with a laser printer. The Canon Np-9030 copier scans and digitizes the image of the document to be photocopied and transmits the processed signal to the copier’s laser printer. Because the image printing before the digital form, it can be used traditional analog copiers can not manipulate the method, the speed of 30 sheets per second. The system’s scanning head to 256 / mm ~ 2 pixels that each letterhead 15000 × 10 ~ 4 pixel resolution read out the original. Due to the high image density, the machine can produce up to 64 halftone images with gradation steps.