In-Line Press11-05-2013
The in-line press is the third commonly used type of wide-web press. Its color stations are separate, complete units horizontally mounted one to the other, and…Read More
The Central Impression Press11-04-2013
The central impression press, sometimes called a drum, common impression or CI press, supports all of its color stations around a single steel impression cylind…Read More
The Stack Press11-03-2013
In the stack press (Figure 4-6), individual color stations (sometimes called sections or decks) are stacked one over the both sides of a main press frame. Each…Read More
Types of Gravure Folders11-02-2013
The U.S. population of gravure presses has undergone substantial expansion and rebuilding in recent years. Nonetheless, there are still many different folder co…Read More
Essential folding Terminology11-01-2013
Signatures. A complete sheet containing all the artwork for a cylinder is called a signature. By examining or taking apart a magazine or book, it is often possi…Read More
Other Gravure Presses10-31-2013
Sheetfed Gravure Although almost all gravure production is on web presses, sheetfed gravure presses still exist. Sheetfed gravure is used for proofing; for pri…Read More
Packaging Gravure Presses10-30-2013
Gravure packaging and product presses are divided into two distinct groups for light weight versus heavy weight substrates. Typical products for light weight su…Read More
Gravure Publication Presses10-29-2013
Publication presses are designed for high speed printing high quality color publications. Typical products include magazine, Sunday newspaper magazines, catalog…Read More
Typical Press Configurations10-28-2013
Every gravure press is a custom-buit machine, designed and engineered for a specific range of products. A packaging press producing 26-inch-wide labels is ident…Read More
Generic gravure printing unit10-26-2013
All web-fed gravure presses start from an unwinder, which serves the purpose of unwinding a roll of substrate, deeping, keeping adequate tension on the web.The…Read More
Densitometric Color and Image Analysis10-25-2013
Solid ink film measurement. To maintain image quality during the pressrun, the operator is concerned with the ink film thickness being printed on the paper. Whe…Read More
Densitometry - Offset Print Quality Control10-23-2013
Densitometry, colorimetry, and spectrophotometry are the three methods used to measure color in the graphic arts. The densitometer measures optical density. It…Read More
Dampening Solution Ingredients10-22-2013
Dampening solutions are usually sold as concentrated solutions that are diluted with water to the proper concentration. In concentrated from, it is commonly ref…Read More
Basic Functions of Dampening Solution10-21-2013
The primary function of solution is to desensitize the nonimage areas of the printing plate to ink. A surface that is "desensitized to ink" is a surface that in…Read More
Ink Film Thickness10-20-2013
The thickness of the ink film on the rollers is a very important consideration in printing. Typical ink film thickness on a lithographic press is 0.2~0.4 mils (…Read More
Design Principles of Inking Systems10-19-2013
A few important design principles are built into the inking system. Each of these helps to optimize the efficiency of the inking system for depositing an even f…Read More
Inking Systems for Waterless Lithography10-18-2013
Waterless lithography requires a printing press that is equipped with a temperature control system, Figure 3-8. Two types of press temperature control systems a…Read More
The Typical Inking System10-17-2013
The inking system, or inker, of most large sheetfed presses in Figure 3-7 usually has at least ten rollers and consists of the following parts:
Inking System Functions10-16-2013
The inking system of an offset press serves five important functions: (1) ink milling, (2) varying ink input across the system, (3) storing ink for consistent i…Read More
Small Offset Presses10-15-2013
Generally, any press smaller than 11 x 17in. (279 x 432mm) without bearers (hardened metal tings attached to the ends of the cylinder or to the cylinder's journ…Read More