What does blue and black ink mean?

Question 1: What does the smell of blue and black ink mean? There is iron in blood, and the main components of ink are iron tannic acid and iron gallate, so the two tastes are similar. Therefore, don't say that women in those days smelled bloody, it was a book.

Question 2: What's the difference between pure blue ink and blue-black ink? Both of them are ink sticks of fountain pens, and the difference lies in their composition and color.

Pure blue ink composition Acid ink The dye ink made of blue has a single composition, writes smoothly, and the color is pure blue, which belongs to acid ink.

Blue-black ink is composed of blackening component, pigment component, stabilizer, corrosion inhibitor, wetting agent, preservative, etc., and it is not suitable for multi-purpose because of many impurities. It is easy to get moldy in wet environment, and it may get stuck after long-term use. The writing color is blue and black.

Question 3: The difference between black-blue and blue-black ink. Blue-black means black, but the color is blue. Black and blue means blue, but the color is black.

Question 4: What does ink mean? Interpretation of ink:

1. For pen writing, it generally does not fade (such as blue-black ink). Its main components are tannic acid or tannic acid and ferric sulfate, and blue dyes are often added to water-dispersed suspensions, including washable inks. 2. Metaphor learning or reading literacy.

Question 5: "Xiao Ming, why is your winter vacation homework blank?" "Teacher, didn't you let us write in blue and black ink? . . "What is blue, black and white gold? Isn't there a controversial skirt picture on the Internet recently? The skirt is black and blue, but most people regard it as platinum. Xiaoming wrote it in black ink, so it is white. This is a cold joke.

Question 6: Is blue-black ink better or pure blue ink? I think blue and black ink is good! Blue ink is too blue! Black ink is too dark! Only blue and black ink is blue, not black! joke

Question 7: Does the signature in blue and black ink have legal effect? The signature in blue and black ink should be the ink used for official signature for many years. Because this kind of ink is not easy to fade and modify, it has archival significance, while pure blue ink and pencil are easy to fade or modify, which is not required by archives. Now use a carbon pen. This is not a question of whether it has legal effect, but mainly depends on whether the signature is the true meaning of the signer, not the true meaning. Any kind of signature has no legal effect.

Question 8: What is the blue and black ink made of? Tannic acid and ferrous sulfate are used for color development. They react to produce colorless iron tannic acid, which is oxidized to produce the color of black iron tannic acid. Inorganic salts are used to prevent ink from settling during storage. In addition, there is a kind of adhesive * * * glue, which makes the ink have proper colloidal properties, prevents precipitation, and makes writing smooth and impermeable. Preservative phenols are used to prevent the formation of microorganisms and the decomposition of precipitation in tannic acid and organic matter. Soluble blue dyes bring bright tones to writing. After blue-black ink is written on paper, ferrous ions and blue dyes contained in the strokes make the handwriting blue at first. As time goes by, ferrous tannic acid contacts with oxygen in the air and gradually oxidizes into iron tannic acid, which makes the color of the strokes gradually deepen and presents black iron tannic acid.

Question 9: Blue-black ink Introduction Blue-black ink, also known as iron tannate ink, consists of blackening component, pigment component, stabilizer, corrosion inhibitor, wetting agent and preservative.

Question 10: Is this the color of blue-black ink?