The cam profile equation is derived in this paper. It is proved to be true for sheet fed offset presses practically.
通过对某型号胶印机的递纸机构进行运动分析，验证了所建立数学模型的正确性。
Bleeds are necessary because most printing devices, including offset printing presses, can't print to the edge of the paper.
由于大多数打印设备(包括胶印机)无法打印到纸张边缘，因此必须使用出血。
Here, in offset, a worker inspects a couple of sheets that have just come off the presses, looking for any kinds of defects.
在这里，在抵消，工人检查一个表，刚刚参加过的印刷机夫妇寻找任何种类的缺陷。
The water printing - ink produced according to the technical formula is good in physical characters, stable in quality and can meet the needs of offset plate printing presses at present.
用本技术配方制备的水性油墨，物理性能良好，质量稳定，能满足目前胶版凸印机的使用要求。
PRINTERS set up and operate letterpress, lithographic, flexographic, gravure, newspaper, instant, digital and offset printing presses.
设置和操作凸版、平版、柔版、凹版、报纸、既时、数字和胶版印刷机。
PRINTERS set up and operate letterpress, lithographic, flexographic, gravure, newspaper, instant, digital and offset printing presses.
设置和操作凸版、平版、柔版、凹版、报纸、既时、数字和胶版印刷机。
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