CAS/TECH REVIEW By Chris and Kathi Morrison Chris and Kathi Morrison own and operate The Image Specialists, a full-service graphics company based in Clements, CA. Chris is also a Microsoft-certified systems engineer (MCSE). Mimaki’s JV2-130 Digital Inkjet Printer This system provides color for all reasons. KEY INFORMATION Report Date: May 2000 Company: Mimaki USA Inc. 3308 Peachtree Industrial Blvd. Suite 110 Duluth, GA 30098 Phone: (678) 475-1236 or (888) 530-4039 Fax: (678) 475-1846 Website: www.mimakiusa.com Contact: Conrad Simoneau, VP Engineering Background: Established in 1974, with Mimaki Engineering Co. Ltd. as the parent company, Mimaki USA manufactures and markets printers and plotters for the CAD/CAM arena. Minimum System Requirements: Windows 95/98/NT; Centronics or Ethernet connection W e’ve reviewed many inkjet printer/plotters from major manufacturers, but until now we haven’t had the pleasure of reviewing Mimaki’s JV2-130. While many of you are familiar with the company’s reputable vinyl cutters, you might not be aware of it’s high-end inkjet printing solutions. Mimaki’s JV2-130, a sevencolor, piezo inkjet printer, is loaded with a number of features, making it a product worthy of careful consideration if you are in the market for a production-level digital printing solution. When we received the JV2-130, it came in two enormous boxes. From the start, we knew we were dealing with a machine that would be at home in the largest of digital-printing shops. Typically we can install just about any equipment by ourselves, but in this case, the head alone List Price: Contact the manufacturer directly. Note: ST’s product-review policy is that items must have been offered for sale for 30 days before the review. Add this to ST’s typical production time, and at least 60 days may have passed since this product was presented. New or revised editions may have come on the market during that time. Fig. 1: The JV2-130’s control panel has a simple, but easy-to-use configuration. 84 SIGNS OF THE TIMES / JULY 2000 Mimaki USA's seven-color JV2-130 piezo inkjet giant will satisfy your appetite for a variety of digital projects. weighed more than 250 lbs. Be prepared to have a few extra friends available to construct this brute. Installing the printer was fairly easy. First, we constructed the stand, positioned the head and bolted it in place. Mimaki uses some of the hardware that secures the printer during shipping for the installation process, so be careful not to discard anything. We had no difficulty matching parts and following the installation guide. It took us approximately 30-40 minutes to assemble the printer. Features The first thing to notice is the printer’s size — nearly 7 ft. wide and 20 in. deep. Be sure you have adequate space to accommodate the printer. The JV2-130 differs from most systems we have used in that the ink cartridges are inserted on both sides of the printer. They’re conveniently numbered one through seven. Most machines use four or six colors, seldom seven. The power button is positioned below the platen on the front left side of the printer. The printer comes standard with an IEEE 1284 parallel interface, but an optional Ethernet connection is also available. The parallel cable is attached to the printer in a port on the bottom of the head. Fig. 2: The JV2-130 has four rubber rollers to ensure accurate tracking without marring the media. The control panel, a 16-character LCD that sits above a cluster of membrane buttons (Fig. 1), could be a bit larger, but it was adequate for the machine’s setup and operation. The buttons are used to enter parameters as well as position the media. Depending upon the printer’s mode, a group of arrows can be used to enter parameters, position the media up or down or position the printhead left or right. A “Remote/Local” key acts as an online/offline button. If the printer is in local mode, a computer cannot print to it. In this mode, various functions can be entered. Use the “Function” button to navigate menus; use the “Enter” key to change or set various parameters. Media handling The JV2-130 can handle media rolls or sheets up to 52 in. The welldesigned mechanism holds media rolls and prevents drift. Four adjustable rubber rollers are used to feed the media (Fig. 2). We were concerned that the middle rollers would scratch the media surface. Most printers in this class use a gritwheel configuration that embosses the media edges. You typically see only two pinch rollers on these types of machines. The JV2-130 didn’t cause any damage to the media, and it also tracked very accurately. Loading media was a snap. The machine accommodates both 2- and 3-in. core diameter rolls, with an adapter used on the former. The positive spin on a smaller core allows more media per roll. Our test media had a 3-in. core, so no adapter was needed. The loading lever, located on the right side of the printer below the platen, allowed us to mount the roll, adjust the rollers to their marked positions and close the media lever. When the machine was powered, it detected the media for size. There’s also a standard powered take-up mechanism (Fig. 3) that allows for unattended printing by rolling the prints onto a take-up core. It can be adjusted to roll in either direction so you can have the print side in or out. In addition, this feature, which isn’t commonly found on most digital printers, allows you to print overnight without worrying about damaged prints bunching up on the floor. Ink handling Mimaki obviously understands the problems facing digital printers and different types of businesses that use these devices. Some businesses that produce photo enlargements could care less about durability. Signshops, however, are usually interested in durability and in particular, weatherability. Many printer companies have offered pigmented inks that resist UV rays, but typically, signshops sacrifice print quality or color vibrance to attain UV stability. While there has been some improvement, it’s not nearly enough to make outdoor digital printing viable with inkjets. Mimaki claims its pigmented inks remain stable for three years outdoors, if laminated. But what really surprised us were the glossy finishes in the final output. Generally, the tradeoff for outdoor durability is a dull finish. Not so with the JV2-130. The printer accommodates seven ink cartridges. Six stations hold process colors, which create a wide range of hues by mixing cyan, magenta, yellow and black. Some colors produced by a four-color process are inaccurate. Further, oranges, greens and browns typically show the worst effect, and subtle shades also suffer because the media’s white surface is used to subdue colors. Mimaki presents two options to address these inadequacies. Besides the common CMYK cartridges, Mimaki also offers four other process colors that can greatly extend the machine’s color gamut. First, a light cyan/light magenta solution offers an extended color space and provides accurate flesh tones (this is our opinion and not scientific proof). Second, a process green/orange solution corrects the problems seen in greens, oranges and browns. If you work with bright colors, this is Fig. 3: The power take-up reel is shown with a cardboard core installed. A switch on the unit controls shows which way the finished prints are wound. SIGNS OF THE TIMES / JULY 2000 85 CAS/TECH REVIEW the way to go. For our testing, we chose to use the CMYKOG solution. The inks are available in self-contained 220cc cartridges that are very easy to install (Fig. 4) and numbered to correspond to their respective slot, eliminating possible loading mistakes. After the seven primary cartridges are installed, the system automatically primes the ink. The ink levels are also automatically monitored, and the machine alerts you when it’s time for a new cartridge. Mimaki also says the ink can be changed “on-the-fly,” meaning if you run out of ink in a cartridge, you can replace it while the printer is processing a job. Another surprise about the prints is that they dry almost immediately. We had wondered how an auto winder works without a corresponding ink-drying unit. Now we know. Our final word on the ink system deals with the mysterious seventh ink station, which is used for spot colors. This advanced feature is not seen in other inkjet products we’ve tested. Mimaki provides a few spot Fig. 4: Notice the ink stations and cartridges are numbered for easy installation. Position 1 is used for a spot color. colors now, but more will be available in the future. One ink type featured is a black cartridge. Black is included in the process set already, but that ink is a transparent process color. Mimaki’s Artwork Black, a high-density black used in conjunction with a clear film to produce film positives for burning screens, can be used by shops that also screenprint. The resulting prints are dense enough to block the UV levels typically produced by an exposure unit. This is truly innovative. Mimaki has a wide variety of media available for the JV2-130, including glossy paper, matte paper, both glossy and matte adhesive Fig. 5: The head height adjustment is located on the front of the printing head. You can see one of the two locking screws in the lower right portion of the photo. 86 SIGNS OF THE TIMES / JULY 2000 vinyls, waterproof and synthetic papers and nonflammable cloth. This brings us to another interesting aspect of the JV2-130’s design — its inkjet head technology. This printer uses a piezo printhead designed for continuous, heavy-duty use. There are two major types of inkjet heads on the market. Most printers use a thermal-inkjet head that boils water-based ink to force it through the nozzle. This type of head is plentiful but self-destructive. Most desktop inkjet printers are thermal-inkjet printers. When you run out of ink, you can replace the entire head along with the ink supply. This adds cost every time you change the cartridge. Piezo printers use electricity to squeeze a drop of ink through the nozzle. This technology produces very little wear and tear on the head itself, meaning it lasts longer than a thermal head. When you run out of ink, you just add more. Over time, this saves supply costs. The Mimaki uses a piezo head with a unique feature. In the past, we’ve encountered problems when passing thick materials, like artist’s canvas, through an inkjet printer. (A heavy paper is 7 mils thick, and a canvas is roughly 12 mils.) If the inkjet head scrapes or contacts the media, ink builds up on the head, and the carriage movement can produce a dark streak. The JV2-130, on the other hand, has a head-height adjustment (Fig. 5) that can accommodate both thick and thin media. Just release the locking screws (a coin will work for CAS/TECH REVIEW this), move the lever to thick or thin and turn down the locking screws. This great feature is unique to the JV2-130. Operating specifications The JV2-130, a dual-resolution machine, prints at a resolution up to 1440 dpi. With a 720-dpi resolution, the JV2-130 produces very impressive prints when viewed from normal distances. However, for posters and graphics viewed from a greater distance, 360 dpi is the obvious choice. The lower-resolution files take considerably less time to process, and the quality is stunning. How fast is the machine? That depends on the print quality you desire. Mimaki says the JV2-130 is three times faster than its JV-1300. That works out to 90 seconds per sq. ft. for the high-speed mode, 160 seconds per sq. ft. for standard quality and 180 seconds per sq. ft. for the high-quality mode. A 2 × 3-ft. print Fig. 6: This is the first production print we created on the JV2-130. The original artwork was a standard postcard. can be completed in 16 minutes, excluding processing. While this is not the fastest inkjet on the market, we found the printer to be fairly peppy. Project Now that we’ve discussed the machine’s features, let’s take it for a spin. For this review, we created signage for a local jazz benefit. The customer needed several banners and a few posters. For artwork, the client supplied a postcard that publicized the event. We decided the JV2130 was a perfect choice for the digital printing. We only had one major reservation. Fig. 7: The postcard didn’t really show off the printer’s capabilities. This sailboat image looks great on the shop wall and illustrates the printer’s color range. 88 SIGNS OF THE TIMES / JULY 2000 Since this is a fairly new product, none of our RIP software had printer drivers for the JV2-130. The JV2-130 comes with a RIP called Win Link, and is supported by RIPs from Wasatch, Onxy, Scanvec-Amiable, CADLink, ErgoSoft and Visual Edge, but we did not have these to test, so we decided to use a Windows 95/98 driver and print directly from Adobe Photoshop™. It was a fairly easy job to directly scan the postcard and scale it to the specified 3 × 2-ft. size. The driver had many options and was fairly flexible. Because the machine was in metric units, we had to use a calculator to convert inches into millimeters. It took less than 20 minutes to print the first image (Fig. 6), and we knocked out the job in about an hour. As you can see from the photo, the image didn’t push the machine’s limits. So we decided to do a more challenging job — a poster for the shop. First, we found a sailboat image on a stock photo CD. Then, we took into Photoshop and sized it to 2 × 3 ft. The output was stunning and adds character to our wall (Fig. 7). Mimaki has constructed a fine product. Its JV2-130 offers a balance of features that should make it a favorite in high-production shops. The six-color system with an optional spot color is more than enough to satisfy the most finicky customer. The integrated auto winder, low-ink sensor and high-printing speed will also make the printer a favorite among signshop owners. If you’re seeking great quality and unattended operation, consider the JV2-130. ■
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