proofer

proof +‎ -er

proofer (plural proofers)

1. A chamber used in baking that encourages fermentation of dough by yeast through warm temperatures and controlled humidity.
2. One who proofs.
   • 1913, Louis Fader, “The Cost of Production and its Relation to Salesmanship and Profit”, in Process: the photomechanics of printed illustration‎, volume 20, number 237, page 238:

     There was a time when the half-tone photographer received considerable more in wages than did the proofer.

   • 1997, John Leverence, And the winner is--: using awards programs to promote your company‎, →ISBN, page 196:

     The proofer would check under “Third” in the T's and find the The Third Annual Pablo Casals Festival.

3. A printer used to make proofing copies that look like how it will come out of the press.
   • 2003, Mei-Chun Lo, Yui-Liang Chen, Pei-Li Sun, Ya-Hui Chiang., “The Color Rendering Between a Color Proofer and Printing Press”, in Proceedings AIC 2003 Bangkok: Color Communication and Management‎, →ISBN, page 181:

     In graphic arts industry, in order to utilize color effectively, often a proofer is employed to simulate the reproductions of a press that is used to produce high-quality printed matters for clients.

• proofing

• reproof