Page count:

Total number of pages in a book including blanks.

Pattern carbon:

Special carbon paper used in business forms that only transfers in certain areas.

Perfect bind:

A type of binding that glues the edge of sheets to a cover like a telephone book, Microsoft software manual, or Country Living Magazine.

Perfecting press:

A sheet fed printing press that prints both sides of a sheet in one pass.

Pica:

Unit of measure in typesetting. One pica = 1/6 inch.

Picking:

Printers nightmare that occurs as the surface of a sheet lifts off during printing. Generally a paper manufactures quality control problem.

Pin register:

A standard used to fit film to film and film to plates and plates to press to assure the proper registration of printer colors.

Plate gap:

Gripper space. The area where the grippers hold the sheet as it passes through the press.

PMS:

The abbreviated name of the Pantone Color Matching System.

PMT:

Abbreviated name for photomechanical transfer. Often used to make position prints.

Point:

For paper, a unit of thickness equaling 1/1000 inch. for typesetting, a unit of height equaling 1/72 inch.

PostScript:

The computer language most recognized by printing devices.
Press number: A method of numbering manufacturing business forms or tickets.

Pressure-sensitive paper:

Paper material with self sticking adhesive covered by a backing sheet.

Process blue:

The blue or cyan color in process printing.

Process colors:

Cyan (blue), magenta (process red), yellow (process yellow), black (process black).