How to calculate the amount of printing ink for th

2022-09-22
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Printing cost control: how to calculate the amount of printing ink

how to calculate the amount of ink to be prepared in actual production? If the amount of preparation is too much, a large amount of waste ink will often remain after production, which not only wastes costs, but also increases waste ink inventory. If the budget is too small, the staff will have to reconfigure, or even stop waiting, which will affect the production progress

first of all, we should know what important factors will affect the amount of ink. Basically, the amount of ink used will be affected by the following factors:

the minimum amount of ink on the printer

when the ink is put into the printer, not all will be transferred to the paper. The ink will pass through many different rollers, disperse and transfer it, and finally print on paper. Therefore, some of them are not used for printing and are lost on the printing machine to cover the cylinder. In addition, a certain amount of ink should be reserved in the ink bucket to stabilize the ink supply, so the ink on the drum and in the ink bucket should be counted in the usage. This can be used to change the viscosity of the resin, which can be understood as the minimum inking amount of the printing machine. Pay special attention to different brands and even models of printing machines, including toluene, whose minimum inking amount will be different. Of course, the more printing quantity, the minimum inking amount of the printing machine will become irrelevant

printing area

the spot color area of the print is directly proportional to the ink volume. The larger the spot color area, the more ink is used. Therefore, the spot color area of printed matter will be used to calculate the ink volume. If the pattern of the printing area is regular, of course, it is easy to calculate the area by using different mathematical graphic formulas. Otherwise, the following methods can be used:

1) copy the pattern on the copy paper first

2) then cut the pattern out of the copy paper

3) put the cut pattern on the scale to calculate the weight

4) cut the blank copy paper into 10cmx10cm squares

5) put 10cmx10cm (100cm2) square on the scale to calculate the weight

6) the pattern area can be calculated through the following formula:

pattern area cm2= (100x pattern weight)/square weight

number of prints

high specific strength and other characteristics

number of prints is most directly related to the amount of ink. The more printing, the more ink will be used

ink loss rate

<30 years before Deng Xiaoping promoted China's reform P> in the general printing process, in addition to some ink will be lost on the drum, some will also be lost when testing the printing effect on the machine head. In addition, because the ink loss rate can also be used to adjust the error of the calculated ink volume, the operator can also decide whether to make an evaluation on this

printing ink thickness

printing spot color ink thickness does not directly represent the printing density, so it cannot be calculated with a general densitometer. Because the ink thickness is quite thin, when it is impossible to measure the thickness with a densimeter and ruler, it can be calculated indirectly with the help of an ink qualitative instrument or an inking machine. There is a lot of knowledge in using these devices to calculate the spot color ink thickness. The author will discuss it with readers in the future

the thicker the spot color ink is, the more ink will be used. Therefore, the printing thickness of the ink should be determined before printing, so as to calculate the ink consumption. The author also advises readers not to reduce the ink thickness in order to save ink consumption, because some colors can only be printed under a specific thickness, and if the ink is too thick, other printing problems will also occur

specificgravity

ink specific gravity is the weight of ink per cubic centimeter. This parameter can also be calculated by ink qualitative instrument or inking machine

now we can discuss how to calculate the ink consumption. First of all, we need to know the basic ink consumption of each print. Using the printing area and ink thickness of spot color patterns, we can know the ink volume of a print. Then we can use the specific gravity of the ink to convert the volume into weight, and then we can calculate the ink volume of a print. Readers can also refer to the following formula:

ink consumption of a print (g) = printing area X ink thickness x ink proportion

after calculating the ink consumption of a print, the ink consumption of the whole printing order can be calculated, and then add the ink loss rate and the minimum ink consumption of the printing machine to calculate the ink consumption during production

production ink consumption = one printing ink consumption x loss rate X printing quantity + minimum ink consumption

the above formula, try to calculate the ink consumption of printing production, and verify whether this theory is helpful to production. (end)

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