Basic Facts and Features

Offset printing applies wet ink to paper by means of a roller and blanket that transfer the image from a metal plate. After you sign your proof ticket indicating the job is ready to print, your pages are output by a Direct-To-Plate (DTP) process that transfers the image to the press plate. This plate is chemically treated to accept ink only on the image areas. The ink is offset onto a cylinder called the blanket, then onto paper, hence the name "offset printing."

When is Offset More Practical than Quick-Copy?

Your job will be run on an offset press when:

  • The quantity makes it more cost effective to print more than one copy per impression. The offset press can print as many as 16 pages on one sheet.
  • The job requires a paper size or type unavailable through digital methods.

Offset printing requires more time because of the setup required.

How to Place an Offset Printing Request

You will have several choices to make, and the person delivering your printing request should be prepared to provide the following information:

  • Quantity (Needed early in the process so that the correct amount of paper can be ordered)
  • Type of paper
  • Method of binding
  • Account number to be charged
  • Person and extension number to be called when proofs are ready
  • Date and time you will need the printing

Selecting Paper and Ink

Print Services can provide offset printing on most types of paper stock. The most often-used text and cover weight paper is stocked in our facility. Samples of other papers can be reviewed in books available at the front desk. Paper orders are placed and delivered two times a week. Print Services also maintains a substantial inventory of ink. An ink selector showing the various ink colors is available at the front counter. Special order inks can also be obtained.