Interesting things about ballpoint pens.

Ballpoint pen can write because the ball in the pen tip can take out the quick-drying ink and transfer it to paper when rolling. It is said that the dry ink in the Japanese ballpoint pen core is enough to write 20 thousand words. However, if you write more words, the gap between the steel ball and the steel tube will gradually become larger, so that the ink will leak out from the gap, which will often stain the clothes and make you uncomfortable.

In order to solve the oil spill problem, experts have not racked their brains. Some study the improvement of ink formula; Some study the hardness of steel balls and steel pipes. But it's no use.

Just when this research made no progress, a small business owner in Japan came up with a unique trick: Isn't it because there is enough dry ink to write 20,000 words? Isn't it because it will leak oil when writing? Then I will decorate less dry ink, so that the ink in the refill can only write more than 1000 words, and the problem of oil leakage in the ballpoint pen core will be solved. So, he applied for a patent, specializing in the production of a short ballpoint pen core and ballpoint pen, which was welcomed by customers and soon he became a big entrepreneur.

This method of solving problems seems to be a kind of cutting corners, but it is actually an innovation, an innovation in thinking and methods to solve problems that people could not solve at that time.