Fast approach for toner saving
Fast approach for toner saving
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节省碳粉的快速方法
DOI：
10.1117/12.872123
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Don
中科院分区：
文献类型：
--
作者：
I. Safonov;I. Kurilin;M. Rychagov;Hokeun Lee;Sang Ho Kim;Don
减少墨粉消耗是现代打印设备中的重要任务，并且具有显著的积极生态影响。现有的墨粉节省方法具有两个主要缺点：与正常模式相比，墨粉节省模式下的硬拷贝的外观更差;整个渲染页面位图的处理需要显著的计算成本。我们建议在字体缓存中存储的字符位图内的随机位置添加各种形状和大小的小孔。这种随机穿孔方案基于标准打印机语言Postscript和PCL的RIP中的处理流水线。只处理文本字符，而且只处理给定字体和大小的每个字符，是一个非常快的过程。该方法不会损坏半色调位图和商业图形，并为典型的办公文档提供高达15- 20%的墨粉节省。节省墨粉的速度可调。由于字符区域内随机放置小孔，因此与纯黑色文本相比，结果字符外观的更改几乎无法区分。建议的方法自动跳过小字体以保持其质量。该方法处理后的文本可读性良好。OCR程序也成功地扫描了硬拷贝。
Reducing toner consumption is an important task in modern printing devices and has a significant positive ecological impact. Existing toner saving approaches have two main drawbacks: appearance of hardcopy in toner saving mode is worse in comparison with normal mode; processing of whole rendered page bitmap requires significant computational costs. We propose to add small holes of various shapes and sizes to random places inside a character bitmap stored in font cache. Such random perforation scheme is based on processing pipeline in RIP of standard printer languages Postscript and PCL. Processing of text characters only, and moreover, processing of each character for given font and size alone, is an extremely fast procedure. The approach does not deteriorate halftoned bitmap and business graphics and provide toner saving for typical office documents up to 15-20%. Rate of toner saving is adjustable. Alteration of resulted characters' appearance is almost indistinguishable in comparison with solid black text due to random placement of small holes inside the character regions. The suggested method automatically skips small fonts to preserve its quality. Readability of text processed by proposed method is fine. OCR programs process that scanned hardcopy successfully too.