Comprehensive quality toner mainly consider the following five factors: blackness, bottom ash, waste powder rate, resolution, fixed on degree.
These factors relate to each other and influence each other, the following is made of the causes of influence of these factors related to elaborate.
Black black degrees value calculation is blackness tester to launch a number of strong beam, beam to graphics under test, and then reflected back to blackness value tester, calculate it absorbed light beam, again through the fixed value calculation and program.
We usually have a habit that print on the black powdered carbon, the better.
But sometimes the carbon powder, other factors may also cause this illusion, such as fixed on degree of carbon powder is poorer, only adsorbed on the surface of paper and not fully penetrating into the paper fibers, when most of the accumulation of carbon particles on the surface of the paper in the paper surface, for the light absorption rate is very high, feeling giving a person is very black, but in fact, the high melting point of this carbon powder, print the words is not strong, is not a good carbon powder.
Ash and bottom ash value is with no words in black for tester to test print proof of the blackness of space value.
It also has relations with the degree of the white paper, namely the same kind of carbon powder in the bottom ash on the different printing paper value does not necessarily the same.
In general, OEM toner bottom ash value is about 0.
05 ~ 0.
06, greater than zero.
06, visual results will feel print proof is a little dirty.
The reason of effect of bottom ash value and conducting properties of carbon powder (
And the size of the toner particles.
The stronger the conductivity, produce the bottom ash particles more fine more easily.
Each type of drum unit for the electrical performance of carbon powder is not the same, this is also our emphasis on specialized powder for one reason.
In addition, because of the sensitive layer on the surface of the photosensitive toner cartridge
damage caused by leakage, can also cause bottom ash.
Waste powder rate of waste powder rate refers to a certain amount of carbon powder in normal printing of waste powder proportion.
Carbon powder production, the ingredients in a certain proportion to join together, and fully stirring, the corresponding processing, regrinding.
In the process, does not guarantee that the thickness of each carbon powder particles as well as its main ingredients of carbon powder, iron powder, resin proportion is the same, only is in the range of certain proportion.
Beyond this range, the carbon powder particles can become waste powder.
Waste toner powder rate is between 5% ~ 7% belong to the normal range.
Also directly affect the amount of waste powder rate of carbon powder printed pages.
The resolution of the resolution refers to the point that can print on the per inch (
Thickness will directly affect the resolution of the toner particles.
We can print some more small strokes to visual is fuzzy, to determine the resolution of high and low.
Can also look for line have burrs, Chinese characters are broken at the corner Angle and whether there is a hollow weak wait for a phenomenon.
At present, the resolution of the carbon powder are mainly 300 dpi, 600 dpi, 1200 dip.
Fixed on fixed on degrees is attached on the surface of the paper, after toner fusion penetration to the paper fiber.
Melting point is the influence of carbon powder on the degree of an important factor.
High melting point, when the paper containing carbon powder particles after fixing component, failed to fully melting penetration to the paper fiber, has been through from the fixing component.
But the melting point is too low, the stability of the carbon powder will become very poor.
We can test by hand touch the surface of the printed graphics, to feel its roughness, which can determine the degree of fixed on good and bad.
In general, the degree of low carbon powder, the printing surface of the text can be very rough.
Strict test, can use a specific tape to stick to print graphics, again off the blackness of change detection graphics.
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