If you've got heavy impressions going to the level of the backing sheet or things like your period cutting holes directly through your paper, then it's not really so much an issue of typing too hard, but your carriage is slightly out of alignment with respect to your type bars.

Your typeface shouldn't actually hit the platen when pressed (or held forward), but should just kiss the ribbon which then places the imprint onto the paper. Holding your typeslug forward against the type guide you should have just enough space to slip a piece of paper between your slug and the platen. If there isn't a tiny bit of space, your typeface will chew up your ribbon and paper over time. The typing thunk sound that typewriters make isn't the slug hitting the platen (aka cylinder), but the typebar hitting the anvil (aka ring).

The proper adjustment for fixing this is thus commonly called a ring and cylinder adjustment and how it's effected depends on whether you have a segment shift or a carriage shift machine. On many machines it requires adjusting two screws on either side of the machine. It changes the distance of platen from typeface and can prevent your making holes in the paper and/or ribbon, which isn't good. Sometimes using a simple backing sheet can remedy a bit of this distance problem, especially on platens which have hardened or shrunk slightly over time. Searching YouTube for your make/model (or similar models) will usually show you the adjustment you'll need to make to remedy these problems.

See also: https://hypothes.is/a/AegRziHnEe-Ud_stVcPQLA

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Often after you resurface a platen, it slightly changes the configuration of the platen with respect to the typeface. As a result one usually may need to do three adjustments in a specific order to get things to align properly again. These can definitely be done at home with some patience.

Usually the order for tweaking is: * Ring and Cylinder adjustment (distance of platen from typeface; the type shouldn't touch the platen or you'll find you're imprinting on your paper, making holes in the paper and/or ribbon, which isn't good). Sometimes using a simple backing sheet can remedy a bit of this distance problem, especially on platens which have hardened or shrunk slightly over time. * On Feet adjustment (vertical adjustment so that letters are bright and clear and neither top or bottom of characters are too light/faint) * Motion adjustment (the lower and upper case letters are at the same level with respect to each other) You can search YouTube videos for your model (or related models) and these words which may uncover someone doing a similar repair, so you have a better idea of what you're doing and where to make the adjustments.

Here's Joe Van Cleave describing some of it in one of his early videos: https://www.youtube.com/watch?v=C0AozF2Jfo0 The general principles for most typewriters are roughly the same with slight variations depending on whether your machine is a segment shift or a carriage shift. You should roughly be able to puzzle out which screws to adjust on your particular model to get the general outcome you want.

Related blogposts: * https://munk.org/typecast/2022/01/23/adjusting-ring-cylinder-on-a-brother-jp-1/<br /> * https://munk.org/typecast/2013/07/30/typewriter-repair-101-adjusting-vertical-typeface-alignment-segmentbasket-shift-typewriters/

You might find a related repair manual for your machine with more detail and diagrams for these adjustments via the Typewriter Database or on Richard Polt's typewriter site.

For those not mechanically inclined you may be better off taking it onto a repair shop for a quick adjustment. https://site.xavier.edu/polt/typewriters/tw-repair.html 

Reply to u/Acethease at https://www.reddit.com/r/typewriters/comments/1d76ygx/got_a_as_a_gift_corona_3_recentlyish_and_i_need/

Adjusting Ring & Cylinder on a Brother JP-1 by [[Theodore Munk]]