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Because if it's NOT on the ink is exposed a little to air and other things like that dry it up but when you got a cap it covers it from that stuff. But if it stops working when it had a cap it might just be out of ink. :(

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15y ago

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Related Questions

Why does the ink come out of the refill when it is kept cap-less?

When a pen refill is kept cap-less, the ink can dry out due to exposure to air, leading to a blockage in the nib or tip. Additionally, the absence of a cap allows for evaporation of the solvent in the ink, which can cause the ink to thicken or dry completely. In some cases, gravity can also cause the ink to flow out uncontrollably if the pen is positioned downward. Overall, keeping a pen cap-less disrupts the controlled environment necessary for the ink to remain usable.


How can you ruin a pen by writing on paper?

Writing on rough surfaces or using excessive pressure can damage a pen's nib. Using the wrong type of ink for the paper can also clog the pen. Storing the pen with the cap off can cause the ink to dry out prematurely.


What is the volume of a pen cap?

The volume of a pen cap can vary depending on its shape and size. Typically, pen caps are cylindrical or conical in shape and have a volume of around 0.5-1 milliliter.


Is it the top of the pen or the lid of the pen?

I would think that it would be called the pen cap or the cap of a pen. Top of the pen or pen top may also be used. But I don't really believe that the lid of a pen is the correct use of the word "lid" in the phrase.


How long does it take for drawing pens to dry?

very-very-very long. (except if you let it dry by removing the cap too long) i use my drawing pen for 1 year.


How long can a pen last with out a pen cap?

4 minutes


Which side of the pen is the top?

The tip of the pen is the top because that's where you would put the pen cap


Why do I chew on my pen cap?

you are thinking


What is the possessive noun for pen?

The possessive noun for "pen" is "pen's." This form is used to indicate ownership, such as in the phrase "the pen's cap."


When the bottle is squeezed what happens to the volume of the air trapped inside the pen cap?

When the bottle is squeezed, the pressure inside the pen cap increases. This increase in pressure causes the air trapped inside the pen cap to compress, resulting in a decrease in volume.


Why do you cap a pen?

Capping a pen helps to prevent the ink from drying out. When the cap is placed on the pen, it creates an airtight seal that keeps the ink from evaporating or becoming exposed to air, which can cause it to thicken or solidify.


What is the difference between a ball pen and a regular pen?

A ballpoint pen is just a pen with a cap. A regular pen is one that clicks. They both work the same though.