Case Study
Correct Pack - Professional Coding and Marking Machine Manufacturer
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Correct Pack - Professional Coding and Marking Machine Manufacturer
In the manufacturing world, small character inkjet printers and large character printers are designed for different industrial coding applications. Both of them apply ink to a surface, but they apply it in very different ways.
Both technologies have wide industry applications. But they solve totally different problems. If you choose the wrong one, you pay too much or you're underperforming. This is why it is crucial to understand the difference between them. Choosing the wrong printer isn't just a simple error; it can cause messy smudges, unreadable codes and expensive production delays.
This guide will help you understand the important factors that you need to take into account to choose the best machine for your production line without any headache.
What Exactly is a Small Character Inkjet Printer?
The term “small character inkjet printer” is generally used to describe industrial continuous inkjet printers (CIJ). They are used to spray very fine drops of ink onto products that are moving at extremely high speeds.
How te Technology Works
This is how the continuous inkjet coder functions: It produces a steady flow of ink. Inside the print head, a small crystal vibrates, which shatters this stream into thousands of tiny droplets. The majority of these drops are recycled back into the system, while the ones required for coding are charged with electricity and targeted toward the item to be coded.
The ink can be sprayed from a distance, so flat, curved or bumpy surfaces would not matter. This makes it particularly useful for:
● Soda cans and glass bottles.
● Plastic cables and wires.
● Small cosmetic tubes.
● Egg cartons.
The CP9000: A Top Contender
For those who need a trustworthy small character inkjet printer, the CP9000 is a great choice. It is suitable for high-speed production lines, and allows you to get clear and easy batch numbers and expiration dates.
Understanding Large Character Printers (DOD and PIJ)
At the opposite end of the spectrum, there are large character printers. These are usually based on two technologies: Drop on Demand (DOD) or Piezoelectric Inkjet (PIJ).Unlike the industrial continuous inkjet printers, these only spray ink when it is needed. They're scalable. This is the tool to use if you need to print a logo that is two inches tall or a giant shipping barcode on a porous surface such as wood or cardboard.
Common Uses for Large Character Printing:
● Cardboard Boxes: Printing shipping addresses and logos on the brown corrugated box.
● Logistics Codes: Generating large, scannable codes to track items in warehouses.
● Building Materials: Marking PVC pipes, lumber or gypsum board.
The Core Differences: A Side-by-Side Comparison
Now, let's compare and contrast these two technologies in the real-world to help you make your decision.
| Feature | Small Character (CIJ) | Large Character (DOD/PIJ) |
| Print Height | Usually 2mm to 15mm | Typically 12mm - 100mm+ |
| Best For | Primary Packaging: the product itself | Secondary Packaging (the box) |
| Surface Shape | Curved, uneven, or flexible | Mostly flat surfaces |
| Speed | Extremely fast (up to 1000 ft/min) | Moderate to Fast |
| Ink Type | Fast-drying, solvent-based | Water-based or Oil-based |
Why Size Matters
The first and most noticeable difference is the letter's height. A small character inkjet printer specializes in printing those little 2mm high dates you see on a yogurt lid. A large character printer is supposed to be readable from a distance, in a warehouse.
Why Material Matters
Ink in industrial continuous inkjet printers is solvent-based and evaporates almost immediately. This enables them to print without ink seeping on non-porous surfaces such as plastic and metal. Large character printers typically employ inks that absorb into the paper or wood, making them ideal for these materials.
Key Advantages of the Continuous Inkjet Coder
When running a high-volume facility, the continuous inkjet coder has some advantages that are difficult to match.
1. Incredible Versatility
A small character inkjet printer doesn't care about the material of your product. The ink sticks to any cold, wet beer bottle or hot plastic pipe coming off an extruder.
2. Non-Contact Printing
The print head does not physically contact the product, so there is no risk of damage to delicate products. You can print on a soft food bag or lightbulb without the pressure.
3. High-Speed Performance
In sectors such as beverage bottling, things are moving quickly. A small character inkjet printer, such as the CP9000, can easily maintain a printing speed of hundreds of meters per minute.
When Should You Choose a Large Character Printer?
The small character inkjet printer is ideal for those “fine details” but not always the best option for large tasks.
1. Replacing Labels
A lot of companies are making a transition from sticky paper labels to large character printing. Why? Directly printing on a box is far more economical than purchasing, storing and applying thousands of labels. It also minimizes waste, which makes your operation “greener”.
2. Better Logistics
For the logistics industry, clarity is king. A scanner in a distribution center will not scan a barcode on a pallet if it is too small or blurry. Large character printers produce high-contrast marks that ensure your goods get where they need to go.
Maintenance: What to Expect
All machines require a bit of attention to keep them running along.
● For CIJ Printers: These machines are constantly moving the ink and therefore must be cleaned to avoid ink clogging. But there are modern units, such as the CP9000, which have automated cleaning cycles that do much of the work for you.
● For Large Character Printers: They are typically less maintenance-intensive, as they have fewer moving parts and the ink is not as pressurized. But you still have to be sure that the print heads are cleaned to avoid dust buildup from the cardboard.
Choosing the Right Ink: Ink Selection and Compatibility
Industrial continuous inkjet printing is just as much about the “ink” as it is about the machines. The ink must be compatible with the environment.
● Food Grade Inks: If you are printing on eggs or in food packaging, food-grade inks are required.
● UV-Curable Inks: These inks won't fade for products that will be hanging outside in the sun (like construction materials).
● High-Contrast Inks: If you are printing on a black plastic pipe, you will need to use a “pigmented” ink (such as white or yellow) so that the code is visible.
Applications by Industry
Each business has its own coding standard. The following is a breakdown of the industries where these tools are most likely to be used.
1. Food and Beverage
In the food and beverage industry, hygiene and speed is the key. The production date is stamped onto milk cartons, soda cans and snack bags using a small character inkjet printer. The ink dries quickly, so it does not smudge when the items are put into boxes.
2. Logistics and Cardboard Packaging
In the logistics world, there is no substitute for large, scannable data. Rather than having to use the expensive stickers, many businesses opt to print large characters on cardboard boxes. This way they are able to print the shipment address and tracking code directly on the box, saving them a considerable amount of money in labelling.
3. Building Materials
When marking PVC pipes, wood or cement bags, a combination of both is required. The small timestamps on a pipe can be marked using a continuous inkjet coder, while the brand name and size specifications on the side of the lumber can be marked with a large character printer.
Which One Do You Need?
Still undecided? Here are three questions to ask yourself:
1. How big is my print? If it’s under 15mm, go with a small character inkjet printer. If it’s huge, go for a Large Character PIJ/DOD printer.
2. What is the surface? If it's a curvy bottle or oily metal, use an industrial continuous inkjet printer. If it's a flat cardboard box, go with a large character unit.
3. What is my line's speed? The continuous inkjet coder is the clear winner for ultra-high speeds.
The right technology ensures professional appearance, safety standards and smooth product flow through the supply chain. Whether it's the precision of the CP9000 or the bold power of a DOD printer, the right tool makes all the difference. Sometimes, the right tool is a CP9000, sometimes it's a DOD printer, and sometimes it's both.
Final Thoughts
There is no single printing solution that fits every industrial application. Small character inkjet printers and large character printers each provide unique advantages depending on production needs and packaging requirements. A continuous inkjet coder is suitable for fast and accurate coding on products. Large character printers are the best for making clear prints on boxes and cartons.
Correct Pack offers both solutions (from the CP9000 CIJ printer to reliable PIJ/DOD systems) helping you match the right printer to your production needs.
Science and technology oriented, continuous improvement, Correct Pack always committed to providing customers with valuable products and satisfy services
China Coding & Marking Machine Manufacturer
Correct Pack Technology Company
Address: Floor 3, Building 1, No. 728, Jinhu Road, Sanzao Town, Jinwan District, Zhuhai City
