Differences in Digital Presses

If you hear the term "digital press," what does it mean?  There are companies who manufacture copiers and call them digital presses, and there are digital press companies who make claims about resolution and quality that just don't match the delivered product.

What is all the difference?

1. Process - true digital presses typically involve a different process than copiers.  While there are many high-quality copiers out there, typically, they cannot match the resolution, color quality, or color-matching throughout the process of printing.  True digital presses are usually bigger, because they endeavor to keep the paper flat and away from heat to avoid cracking a folded, printed piece.  Heat is a major factor in the digital printing process, and you can tell the difference in the curl or lack thereof of the printed piece.  True color-matching is a very important piece of a commercial print, and good digital presses will produce a very consistent color match throughout the print.
2. Resolution - Not all digital presses are made equal.  The resolution is a major factor in making a print that comes very close to offset quality.  When examining a print, do you see little square bumps around the images in the finished piece?  Does it look hazy?  This is the result of resolution that is sub-par to the commercial printing environment.  True 1200X1200 DPI (dots-per-inch) resolution or greater completely eliminates this fuzzy edge.  While many companies claim to have this resolution, most derive that resolution through a 600X600 DPI that has been digitally "enchanced" to a greater resolution.  What this means is that the computer makes an educated "guess" at what comes next.  Result = the edge gets fuzzy and pixelated.  True 1200X1200 resolution is very clear and sharp, looking much more like offset.
3. Alignment - the adjustment from the front of the print to the back.  Many companies do not pay attention to this "skew" in the images.  If the alignment is off, the finished, full-bleed prints will look slightly off or askew.  Think of holding the image straight up and down, but having the print on the paper look "a little off"... not straight with the edges of the paper.  This is the result of poor alignment in the machinery that produced the print.  A good digital press will keep the alignment to .5 mm or less front-to-back.  This produces a print that is even with the edge of the paper.
4. Production speed - the page-per-minute of a digital press is critical to getting your printed piece back in time.  A good digital press will have a fairly rapid rate of production that will not slow based on the amount of printed material running through the machine.  60 ppm 4/0 or 30 ppm 4/4 is a good starter speed for digital presses.  The machine should also cool the paper during the process as the rollers tend to heat up during production.  This curls the paper and makes the finished piece brittle.
5. Stability - a digital press should have a great deal of stability in production.  Copiers tend to break very frequently, especially with higher runs.  A true digital press is made for the commercial printing environment, and they are typically very stable in comparison to copy machines.

Digital vs. Offset Press

 In today’s market, there is a lot of confusion about the changes in printing technology.  Digital presses have begun replacing offset presses in many print shops; however, many times the customer does not know what to choose or what exactly the difference is between the two.  Since making the wrong decision can result in hundreds of dollars difference in the price that customers pay, we at Ogden Blue thought we would help clarify the difference between the two and highlight the advantages of each.

What is Offset Printing?

Offset is the traditional “lithography” type printing that has been around for literally hundreds of years.  While the technology has changed over that period of time, the basic process remains the same.  In offset printing, the image is inked onto a plate and burnt in.  The image is then transferred to a rubber blanket then further to the actual printing surface.  The printing surface repels water, and the ink from rollers is transferred to the paper, while the non-inked areas attract water.  In this way the image is repeated over and over again as the surface of each “print” is inked again and again.  This is the traditional “copy” process.  Offset presses can either be “roll-fed” or “sheet-fed”.  Rolls of paper are typically cheaper per print than sheets.  Very skilled craftspeople are also required to ensure correct color matching in this process.

What is Digital Printing?

The digital process is much different, as the image is transferred directly from a computer to the print server or controller of the digital press.  Many different types of imaging engines are available, and the EFI Fiery Engine is probably one of the most common in commercial environments.  The images are usually saved as PDF files for most business printing then sent to the print controller.  The computer within the digital press translates the images to areas to be “imprinted” on the surface of the paper.  Most digital presses are sheet-fed.  This process saves a tremendous amount of time because the digital presses do not rely on the making of plates.  It is cheaper in low-quantity, because the process is simpler and the equipment does most of the work using computers.  Typically, graphic designers or print operators are used to set up the proper print parameters.

From Pinscreative.com, here are the advantages of each:

Advantages of Digital

• Shorter turnaround.
• Every print is the same. More accurate counts, less waste and fewer variations, due to not having to balance ink and water during press run.
• Cheaper low volume printing. While the unit cost of each piece may be higher than with offset printing, when setup costs are included digital printing provides lower per unit costs for smaller print runs.
• Variable Data Printing is a form of customizable digital printing. Using information from a database or external file, text and graphics can be changed on each piece without stopping or slowing down the press. For example, personalized letters can be printed with a different name and address on each letter. Variable data printing is used primarily for direct marketing, customer relationship development and advertising.

Advantages of Offset

• High image quality.
• Works on a wide range of printing surfaces including paper, wood, cloth, metal, leather, rough paper and plastic.
• The unit cost goes down as the quantity goes up.
• Quality and cost-effectiveness in high volume jobs. While today’s digital presses are close to the cost/benefit ratio of offset for high quality work, they are not yet able to compete with the volume an offset press can produce.
• Many modern offset presses use computer-to-plate systems as opposed to the older computer-to-film work flows, further increasing quality.

Use this checklist to decide which is right for you.

Quantity:  How many am I printing?  (Typically, offset printing, because the cost of setup is so much higher, will be more expensive until you hit 5,000 pieces 8.5X11.)

Printing Medium:  How heavy is the paper that I will be using?  Most digital presses are not equipped to handle the thicker papers (18pt. on up). 

Color:  How much color is needed?  1,2, and 4 color processes are available in digital or offset; however, digital offers better color matching and great flexibility in color choices.  We have printers at Ogden Blue that use up to 12 different colors.  This gives a high-grade of color matching. 

Resolution:  Offset actually gives the best resolution for production.  However, digital presses are hard to beat anymore.  It is difficult, without a loop, to tell the differences between them.  Ogden Blue uses a “true-color” and a true “1200X1200” resolution.  Poor resolution will actually make the product look grainy.  This is a topic for another blog post.

Turnaround:  How fast do I need it?  Digital is a much faster process, and is great for companies that need a fast turnaround on high-quality prints.  While keeping costs in line, digital also offers an unparalleled rapidity in production. 

Proofing:  Do I want to look at the “finished” product before it goes to print?  Digital presses also allow a “proof” which is an actual picture of the finished product produced in exactly the same manner as the printing process will be.  This means that a product can be fully proofed for color accuracy, resolution, and grammatical accuracy before the printed products are delivered.  Offset requires as much as $400 for a printed proof before going to press!

Customization and Flexibility:  Do I want to change a product per print?  Do I need addressing or customized marketing materials?  This is only possible to do on a digital press in one run.   Ogden Blue offers solutions in direct mail marketing, customizable marketing pieces, and many other customized pieces.

WHy the new web site?

For anyone who saw the old web site, I think you will understand why we really wanted to update this site!  When I came to the company two and a half years ago, there were a lot of pressing issues that needed to be taken care of, and the web site just seemed to drop by the wayside.  We really concentrated on becoming a top-notch printing firm during that period of time, and we have done an outstanding job on offering unique services, stellar customer service, and a fast, easy printing experience.  The web site is more about customer service to me.  Is there a way that we can help you get stuff done faster, easier, with less hassle?  I hope that is what the new web site will be all about.

This site now gives us the ability to change the information here ourselves.  We get to blog and converse with you through it.  It links to our social media, so we can let you know about all the great services and specials you can find at Ogden Blue.  In other words, it helps us continue the conversation with you, and helps us deliver a higher level of service than we could before. 

New Features

We have a lot of new features and a new look.  Our new look, which some of you have seen, reflects a bit better the new Ogden Blue.  We have had blueprinting services for a long time, but a lot of people didn't know that we also do color printing which is reflected in the new logos.  We have some amazing digital presses that give incredible quality... right here in Ogden so you can keep your business local.  Our six color bars reflect the six ways that we can serve you, and each one represents an area in which we can help you express yourself as you want in print, art, and design.

So... we have added a File Upload area, where you can send your print files to us.  You can also contact us directly or learn about the different kinds of services we offer.  We have an Art Knowledge base coming soon, where you can learn a little about the different types of products and how they are used.  You can join a newsletter that can help you track when art classes are, what specials we are offering, and hear about great new products that we are bringing on-line or into the store.  There will be specials that you can only view on-line, and we will have contests that will run.  For instance, right now, you can win an iPad by just printing with us or by joining our newsletter forum!

 We are happy that you decided to check out our new web site, and I hope you find it enjoyable, informative, and easy-to-use.  I also hope it saves you time, helps you learn, and helps you save.