What is comic book 'pressing'?

What is comic book 'pressing'?

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Comic book pressing refers to, in essence exactly what is says, it's the pressing of wrinkles out of a comic book. Now this may be naturally, through certain storage of a comic book, but typically when one talks about pressing in the comic book community, we're talking about an intentional act in order to enhance the grade aesthetic-value wise or dollar-value wise of a particular comic book. It could involve heat, it could involve moisture at times, and it could involve pressure in trying to change the cover frame work or paper quality in some sense of pressing out those wrinkles.