So it can be photocopied or scanned easier and clearly. also some DOD documents are edited or notated with different colored inks and it would cause confusion.
Using black and blue ink shows proffesialism, because your work will look more neat and professional when avoiding the use of colored ink. So when writing a formal letter by hand use black or blue ink.
Blue and black mainly.
It is best to use black or dark blue.
Yes fountain ink pen is allowed, however use only black or blue ink.
This was started years ago (prior to high quality color copiers) to help distingish between original signatures (blue ink) and copies (black in color).
A New York notary should use either black or blue ink for signatures. Black ink is often preferred for its clarity and permanence, while blue ink can help distinguish original documents from photocopies. It's important to ensure that the ink is indelible to maintain the document's integrity. Always check specific requirements, as they may vary by circumstance or institution.
It is recommended to use black or blue ink for filling out a handwritten application for a scholarship to ensure readability and formality. Avoid using colorful inks or gel pens that may detract from the professional appearance of the application.
black or blue
You can use black or blue ink to sign on a check. Actually there is no restriction on the color you can use to sign on a check as long as it does not blot on the check paper. Also, your writing should be clear and legible so that the bank authorities can verify it accurately.
To obtain colored components from blue or black ink, you can use a process called chromatography. This involves dissolving the ink in a small amount of water or alcohol and then applying it to a chromatography paper. As the solvent travels up the paper, the different pigments in the ink will separate based on their solubility and affinity for the paper, revealing various colors. This method effectively isolates the individual colored components present in the ink.
Black ink
Memory recall refers to retrieving the memory of events or information from the past. No ink is needed, however, if you want to write things down, you can use any color ink you'd like. If you already keep a journal, you may want to use the same color ink you use for that.