Chase: From Pursuit to Printing Frame

To chase someone is to run after them, to pursue with intent. The word carries the sense of movement, of one thing following another across space. Outside the printshop, chase is action; it is drama.

Inside the printshop, a chase is utterly static. It is a rectangular frame, typically made of steel or iron, into which a printer locks pages or columns of movable type before the job goes on press. The chase itself does not move once the type is secured. Its job is to hold everything in perfect alignment while the press does the work. A chase might measure 24 by 36 inches or larger, depending on the press. The type and spacing material fit inside like a puzzle; quoins (wedges) tighten the whole assembly until it is locked solid.

The name likely arose from the enclosure itself. A chase is a frame that catches and holds its contents, trapping them within boundaries, much as a hunter's chase ends in capture. The metaphor maps neatly onto the tool: you place type into the chase and lock it down. The pursuit ends in containment.

Compositors and press operators would speak of chasing up a form (preparing it for press), of locking up a chase, of pulling a proof from the chase. The frame became so central to letterpress work that the verb and noun both embedded themselves in the trade's language. A chase holds everything that matters in that moment: the story, the spacing, the exact position of every letter.