Spot color ink matching including light ink deployment and dark ink deployment. Usually dilute agent with the ink is added in the original ink is light coloured ink, when allocating to dilute agent, colors of ink as a supplement. Must pay attention to: 

1) according to the color sample to choose the appropriate diluent; 

2) determination of the proportion of the original ink and diluent according to the chromatogram and the original; 

3) according to the primary color ink from light to dark order were successively added selected; 

4) in accordance with the proportion of the allocation of large to small in order to add ink; 

5) mixing evenly, using a scraper to take small color with the original sample comparison inspection, or ink in the paper will take open (i.e. dip with mung bean of a similar size to the ink on the paper, again another piece of paper is covered in the above to ink contrast); 

6) to minimize the use of different color inks, otherwise the deployment of ink gloss reduction, dark ink; 

7) samples of all the best paper with the same printing paper, observation of color paper and the sample must be under the same standard light source. 

The blending method of the dark ink is basically the same as that of the light color ink, but it should be paid attention to: 

1) with the main colors as the main ink, supplemented by other ink. Deployment to analyze the primary color ink and auxiliary ink color shading and weighing ink, set the primary color ink with ink and Taiwan, slowly adding auxiliary color ink and stir evenly, then use comparative methods to observe and primary colors like the difference until the match. 

2) the color close to the requirements of ink for ink. According to the principle of subtractive color, mixed color will become dark, primary color ink species number, more dark color, brightness and color brightness is also lower. Therefore, in the deployment of ink, must choose and use the color requirements of similar color ink, avoid the deployment of a variety of color ink. For example, dark brown with red and yellow Molve general ink and black ink deployment. 

3) note that the ink color cast. Ink usually some partial color, such as partial red, bluish and yellowish etc., the deployment of ink must be controlled well the various color ink color cast. 

4 allocation of various colors ink should pay attention to the problem 

The deployment of spot color ink, in addition must abide by the rules, but also must pay attention to the following points: 

1) with ink appliances such as an ink knife, PI be the school above, soot down throw tau stuffy? Drag blowing cherry? 1. 3 to delete arc? Br>2 maintain environmental hygiene, stained with ink used cloth wipe, maintain a good working environment, to develop good working habits. 

3) take care of the remaining ink on the machine, do not make it dry skin, to prepare for future use. The best in the remaining ink into some inking oil, then cover with greaseproof paper. 

4) see hue with fidibus, application of paper to be printed in a standard light source or natural light to watch. 

5) with ink, do not use the ink with the ink knife to dig another color of ink or auxiliary material. 

6) the use of bottled or packaged ink, don't dig with the knife, should be on the surface by layer digging. 

7) should not blindly add other auxiliary materials in the ink. 

8) for the larger amount of ink, the best use of the agent is now added, with the number of how much to ensure quality. 

9) to record the proportion of the allocation of ink in a timely manner, in order to facilitate the allocation of ink in the next printing.