Skip to main content

Offset Printing

A form of printing technology using an intermediate carrier to transfer image from original carrier (such as a plate) to the substrate.

Offset Lithography
In this process the image + non image area coexist on same plane. Types of lithograpgu  - di-litho and waterless lithography. Types of offset lithography - sheetfed and web-offset lithography.

Offset printing is widely used in modern printing presses. It is described as when 'positive image' on plate is inked and transferred (offset) from plate to a rubber blanket. Blanket captures mirror image of plate. 

The blanket moves the image to substrate making the image. In Offset printing, it is based on fact that oil and water do not mix. The offset process employs a planographic plate mounted over press cylinder. 

Offset presses makes use of 3 cylinders: Plate, blanket and impression cylinder.

Comments

Post a Comment

Popular posts from this blog

Screen Printing (Serigraphy)

Screen printing  is a printing process in which we use a mesh for ink transfer  over substrate by using stencil. In Stencil, areas are made permeable so ink can pass and form an image, and areas made impermeable blocks the ink, hence forming a non-image area. A squeegee is is moved across (from top to bottom direction of stencil) screen to fill and open mesh apertures with ink, then a reverse stroke is made which causes screen to touch substrate momentarily along the line of contact. This makes ink to wet the substrate and is pulled out of mesh apertures as screen springs back after blade has passed. One color is printed at one time, so multiple screens can be used to produce a multicoloured image, graphic or design. There are many terms used, which is essentially same technique. Traditionally, this process was known as screen printing or  silk-screen printing,  because silk was used in process. It's also called as  serigraphy  and  serigraph printing .  At present, synthetic threa
Post a Comment
Read more

The Medieval Packaging: The era of hunters and gatherers

The packaging is an ancient industry dating back to around 5000 B.C. when the humans were merely hunters and gatherers. The very first need for packaging was felt for the transportation of left over food form one place to another.  The movement of tribes and own survival forced them to invent some sort of containers to contain and carry the food, water and tools with them and hence the hard shelled fruits were prized as their first containers. When the earlier cities were domesticated a plethora of packaging materials were used for storage, transportation and protect the essential items. Early protective packaging designs were made of plant leaves and animal skin as they were easily available in the proximity. Bottle Gourds Nuts and bottle gourds were used by these prehistoric people and radiocarbon dating indicates their presence in the Americas by 10,000 years ago.                                                            The ancient Egyptians were the first to industrialize glass
Post a Comment
Read more

PepsiCo Recycling - Simple Acts Big Impact

Guys, Have you heard of PepsiCo Recycling. An initiative by PepsiCo to recycles the bottles and all of their packaging. Their motto is Simple Act. Big Impact. It is so true. As mentioned on their website - PepsiCo Recycling believes that bigger change starts with one bottle, with one person, with one action. They have created multiple Programs and Partnerships to achieve the overall success, and to create an impact in the community. Their Programs include: Recycling Rally K-12 Recycling Roadster Community Programs Events, and  Campus Engagements And their Partnership model includes: Boosting Infrastructure Providing Access Working with Communities So in PepsiCo Recycling words - Lets Take Action, and Let's work together to increase the U.S. recycling rate for beverage containers. Every bottle. Every can. For further information, please visit their website at - https://www.pepsicorecycling.com/
Post a Comment
Read more