This is the final assembled unit of metal type, image blocks, and spacing material secured tightly within a heavy steel frame called a chase. Once locked up, it becomes a single solid mass that can be carried to the press bed. The entire surface must be perfectly flat and type-high to transfer a clean, even impression onto the paper.
Two of the letters dropped out when we lifted the form off the stone.
A properly locked form should pass the lift test. If you raise one edge and any loose type pushes down under finger pressure, it needs to be rebuilt.
Also heard as
- forme
Related terms
Chase
A heavy steel or iron frame used to hold metal type and blocks securely together for printing.
Furniture
Blocks of wood or metal used to fill blank spaces in a chase and establish page margins.
Make-ready
The preparatory work required to get a printing press ready for a specific print run.
Imposing stone
A flat, heavy surface used for assembling and locking up metal type.