1956 3M Platemakers Guide Photo Offset Plates Manual w/ Contrast Guide Inserts For Sale

Condition

Pre-owned. Original 1956 manual showing light handling wear, edge wear, minor creasing, and a small corner bend. Includes the original removable Negative Contrast Comparison Guide with the three photographic comparison inserts (High, Medium, and Low Contrast). Interior is clean and complete. Please review all photos for condition.

Description

Original 1956 3M Platemakers Guide for Processing 3M Photo Offset Plates, published by the Minnesota Mining & Manufacturing Company (3M).

This professional lithographic printing manual was produced for commercial press operators, platemakers, camera operators, and printers using 3M presensitized photo offset plates. It provides detailed instructions on plate preparation, exposure, developing, troubleshooting, and press performance.

A desirable feature of this example is that it retains the original removable “Negative Contrast Comparison Guide” along with all three photographic comparison cards illustrating High, Medium, and Low Contrast negatives. These inserts are frequently missing, making complete examples more difficult to find.

Topics include:

* Characteristics of 3M Photo Offset Plates

* Proper equipment and plate handling

* Chemical handling

* Exposure techniques

* Developing procedures

* Troubleshooting common plate problems

* Plate repairs and corrections

* Press life and performance

* Negative contrast comparison guide

* Original removable photographic comparison inserts

Published by:

* Minnesota Mining & Manufacturing Company (3M)

* Printing Products Division

* St. Paul 6, Minnesota

* Copyright 1956

A great reference for collectors of:

* Letterpress and offset printing

* Graphic arts history

* Printing trade manuals

* 3M memorabilia

* Industrial ephemera

* Mid-century commercial printing

Please examine all photographs carefully as they form part of the description.