彩色密度使用与色度学培训.pptVIP

提 示 信 息 显 示 表 显示Error-1-： 操作错误，测量头按下时间太短，重新测量。 显示Error-2-： 数据采集错误，重新测量。 显示Error-3-： 由于低电等其它原因造成的处理不能自行恢复性错 误， 谢谢各位! * * 3 * 4 * * 5 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * If a manufacturer can’t control the appearance of his product; why assume he is controlling the quality of the goods on the inside. In this day we are always offered alternatives. Should we perceive an item on the shelf to be old, faded, or damaged in some manner we simply switch brands. Thus the control of appearance is literally money in the bank for the producer. * * * * * * * * * 2 * * * * * * Again this is something I can talk for hours in describing what all the different status is and how it reflects on our density readings but it safe to say that what ever status your using to be consistent. If one plant is using E and youre using T you will get different readings. * * * * * * * * * * * * * * * * * * * * * * * * * * Diagram of a Colorimeter Uses apertures to locate the object Uses three filters to differentiate colors of light Uses receiver to determine the amount of light lamp optics aperture filters receiver Colorimeter Measures in three different area’s across the spectrum from 400nm to 700nm Diagram of a SpectroDensitometer Uses apertures to locate the object Uses several filters to differentiate colors of light Uses receiver to determine the amount of light lamp optics aperture filters receiver paper SpectroDensitometer Measures all the way across the spectrum from 400nm to 700nm ranging from every 14nm to every 10nm What is the ‘best’ color tool? Why use a color measurement instrument? Are there limitation to the eye? How about the instrument? x Look at the ‘X’ Limitations Retinal Fatigue - Brief exposure to strong colors leaves an afterimage Considerable rest is required to refresh the eye’s rhodopsins Limitations Retinal Fatigue Poor Color Memory A printer knows that two objects must be viewed simultaneously in order to fully judge the