KYOCERA Introduces World’s Fastest Drop-on-Demand Inkjet Printhead

KYOCERA Introduces World’s Fastest Drop-on-Demand Inkjet Printhead
Revolutionary component offers full-color 600-dpi output at 150 meters per minute; marks Kyocera’s entry into inkjet printhead market

March 25, 2008
Kyocera Corporation (President: Makoto Kawamura) today announced that it has developed the world’s fastest1 high-resolution inkjet printhead — the main imaging component used in inkjet printers — for commercial applications. The company will commence global sales of the new KJ4 Series printhead in April 2008.

The KJ4 Series offers outstanding reliability and productivity, with full-color print speeds of up to 200 meters per minute at 600 x 480 dpi, or 150 meters per minute at 600 x 600 dpi. The KJ4 Series also offers the widest print line of any printhead in its class, spanning 4.25 inches (108 millimeters)2.

Kyocera’s KJ4 Series printhead has been produced and sold on a purely limited basis until now. The company began initial technology development with Brother Industries, Ltd. in 2002, and continued KJ4 development efforts independently. Kyocera recently completed approximately one year of successful testing of the KJ4 Series on commercial printing equipment.

“The superior performance and reliability of Kyocera’s KJ4 Series printhead represents a breakthrough that will open new markets for inkjet printing technology,” stated Hitoshi Takao, general manager of Kyocera Corporation’s Thin Film Components Group. “We believe this product will finally make it possible for the inkjet printer to compete successfully in the mainstream market for commercial printing.”

1 Measured by Kyocera (as of March 25, 2008)
2 On a single-module basis (as of March 25, 2008)

KJ4 Series Inkjet Printhead
KJ4 Series Inkjet Printhead

During development, Kyocera applied its proprietary piezoelectric ceramics technology to create a compact piezo actuator3 for a critical element of the printhead. By optimizing its core competency as a global leader in fine ceramic technologies, Kyocera created a new device that allows inkjet printing with unprecedented speed, resolution and reliability.

In addition, Kyocera utilized the extensive range of printhead technologies it has accumulated through its commercialization of thermal and LED printheads. Leveraging its design and manufacturing expertise, Kyocera arranged the actuator and its accompanying nozzles into a dense, regular pattern for the industry’s widest printhead. Kyocera also ensured that the components work together reliably and with a high level of precision.

Kyocera projects first-year sales of 1 billion yen (about US$10 million) for the new product, rising to an expected 10 billion yen (about US$100 million) in the fiscal year ending March 31, 2010.

3Using the piezoelectric effect to control ink flow, this actuator is the critical component enabling the printhead to offer high-speed, high-resolution printing.

1. World’s fastest “drop-on-demand” inkjet printhead

Kyocera’s KJ4 Series printhead has achieved a print speed of 150 meters per minute on Miyakoshi Printing Machinery Co., Ltd.’s MJP600 printer. This printer uses Kyocera standard ink and combines two printheads in the scanning direction (each with a speed of 75 meters per minute). The MJP600 can print the equivalent of approximately 1,000 sheets of A4 paper per minute.

2. High-resolution 600 dpi printing
The KJ4 Series printhead’s 2,656 ink nozzles are arranged in a 4.25-inch-wide print line. This configuration offers high-resolution (600 dpi) printing even at high speeds.

3. Simplified design
Kyocera’s broad inkjet printhead, with a width of 4.25 inches, allows designs with fewer heads, thus simplifying equipment configuration.

Comparative printhead arrangements required to print 600 dpi at 150 meters per minute, with 50 cm paper width.
Comparative printhead arrangements required to print 600 dpi at 150 meters per minute,
with 50 cm paper width.

4. Supports various types of printing
The KJ4 Series printhead supports both waterborne pigment ink and UV ink, making it possible to print on paper or other materials ranging from cloth to non-absorbent films and plastics.

5. High reliability
Kyocera’s KJ4 Series printheads were installed in MJP600 printers made by Miyakoshi Printing Machinery Co., Ltd. (Headquarters: Narashino City, Chiba Prefecture, Japan; President: Iwao Miyakoshi) in commercial use since April 2007. The printers provided on-demand printing at client sites for approximately one year. Kyocera obtained favorable results for both quality and reliability through this equipment test period, verifying the superior reliability of its product.

A high-speed inkjet printer equipped with Kyocera’s KJ4 Series printhead will be on display in the booth of Miyakoshi Printing Machinery Co., Ltd., at Drupa 2008, a printing industry exhibition. Drupa 2008 takes place from May 29 through June 11, 2008, at the Dusseldorf Trade Fair Center in Germany; the event is held once every four years.


Printing Method

Piezoelectric DOD Line Inkjet Printhead


200×25×58 (mm) (width × depth × height)

Number of nozzles

2,656 nozzles/head

Print width

4.25 inches (108 mm)


600 dpi x 600 dpi

Printing speed*

75 meters/minute at 600 x 600 dpi

Droplet size*

From 4 pL to 21 pL

*Depends on ink types and printing conditions

Dainippon Screen at DRUPA 2008

Drupa2008 FlashReport

On Demand Newsprint Solution

Manufacturing locally has always been the alternative to air-freighting newspapers, but the costs and local production limitations have proven unattractive to most publishers.
With Screen’s Truepress Jet520 On Demand Newsprint Solution, publishers can now maintain brand loyalty by ensuring ‘same-day’ availability all over the world and its quality and cost ensures that the business can be successful.
At drupa Screen booth, the Truepress Jet520 is doing live print of various newspaper titles with the same-day content, getting actual publication data from all over the world via networks; Asahi/Japan, DongaLibo/Korea, Daily Mail & Evening News/U.K., Le Monde/France, Handlessbatt/German, Elypais/Spain, USA Today/U.S.A.

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Solution for Sign and Display

CIMG0098.jpg Just before the drupa2008 starts, the Truepress Jet2500UV officially released to the market.
It is displayed at the center of Screen booth, and to show its quality and performance, live print onto both roll and board type substrate is being demonstrated.

Solution for Industrial print

The Truepress Jet650 UV is the new alternative for screen printing and pad printing, with precise output quality and print on demand with UV inkjet system. Actually the machine has been displayed for the first time at the trade show, the Truepress Jet650UV live prints speedmeter for automobile with beautiful graduations, dummy beverage cans and plastic ID card, etc. to showcase its print quality and wide range support of printing media.

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Trueflow SE Ver6.0 private demo

At Screen booth, private demo is avilable to get detailed information of Trueflow SE and other Screen’s software products at demo area. With expert staff and private demo room, you can feel relaxed and concenrated to the demo, also can talk and ask face to face of course.

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UV Inkjet head technology

CIMG0085.jpg Screen places special emphasis on developing unique technology of inkjet to play a leadership role in Print On Demand market.
The assemble know-hows of UV inkjet head is the Screen’s unique technology that will contribute to the new generation single-pass head unit.
At drupa, printing on PET(Poly Ethylene Terephthalate) for beverage cans and packages is being demonstrated.

Non-chemical support CtPs

PT-R series supports non-chemical plate of various vendors.
PlateRite4300 CtP is always crowded with many customers at drupa. High cost performance entry model, PlateRite Niagara is also live displayed.

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CTP head technology is displayed

CIMG0112.jpg One of the key factors of Screen’s sucess on CtP sales worldwide, is its special know-hows on developing and manufacturing high-precise optical head. The most powerful head with accurate channels, GLV head, is dispalyed at the show. The guide movie that introduces techonogy of this head is screened on the display.

go to pagetop @ DRUPA 2008 – Video & Images from the SHOW

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