Summary of Contents for M-real International inkjet printing
- Page 1 T E C H N O L O G Y , I N K S A N D P A P E R F O R inkjet printing M-real Digital imaging...
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Page 2: Table Of Contents
Definition NKJET PRINTING IS A NON IMPACT DOT MATRIX PRINTING TECHNOLOGY IN WHICH SMALL DROPLETS OR PARTICLES OF INK ARE JETTED FROM A SMALL APERTURE IN RAPID SUCCESSION AND UNDER COMPUTER CONTROL DIRECTLY TO A SPECIFIED POSITION ON THE SURFACE OF A SUBSTRATE IN ORDER TO CREATE AN IMAGE Contents Inkjet Technology: an overview... -
Page 3: Inkjet Technology: An Overview
Inkjet Technology Overview HEN INKJET PRINTING FIRST CAME ON THE SCENE PRINT QUALITY WAS GENERALLY UNSATISFACTORY OWEVER PRINTERS SOFTWARE INKS AND SUBSTRATES . (I CAN NOW BE ACHIEVED MPROVED PRINT QUALITY IS NOT ONLY DOWN TO BETTER PAPER BUT A VARIETY OF CHANGES IN THE WHOLE ARENA In the early days of inkjet print technology development, poor colour image quality due to ink spreading and inter-colour bleeding (that is where the penetration of... - Page 4 Image Domino Amjet Linx Thermal Piezoelectric Electrostatic Roof-shooter Side-shooter Hewlett-Packard Canon Olivetti Xerox Lexmark Squeeze Tube Bend Mode Push Mode Siemens Tektronix Dataproducts Gould Sharp Epson On Target Tech. Meanwhile, another continuous inkjet concept - the Hertz concept (named after Professor Hertz of the Lund...
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Page 5: Heads, Modes And Nozzles
Heads, Modes and Nozzles THERMAL INKJET PRINT HEAD IS EQUIPPED WITH A RESISTOR THE INK USING ELECTRICITY HE VAPOUR INSIDE THE PRINT HEAD CHAMBER EXPANDS AND PUSHES THE INK OUT OF THE NOZZLE REMAINING VAPOUR BUBBLE COLLAPSES AFTER COOLING AND SUCKS NEW INK INTO THE FIRING CHAMBER HROUGH CHANGING THE HEAT ENERGY DROP SIZE CAN BE TUNED ACCORDING TO THE APPLICATION REQUIRED... - Page 6 Print head configurations Inkjet technology is used in many different architectures and with different operating principles, depending on the configuration of its print heads. With thermal inkjet technology, for example, the print head can be a roof shooter, with an orifice located on top of the heater, or a side-shooter, where the orifice is located on the side nearby the heater.
- Page 7 All of these designs and their drop performances ultimately determine the quality and throughput of a printed image. The trend in the industry is in jetting smaller droplets for image quality, generating faster drop frequency through a higher number of nozzles for additional print speed, while inevitably trying to keep the cost of manufacture down.
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Page 8: Putting The Ink Into Inkjet
Putting the Ink into Inkjet RGUABLY ONE OF THE MOST CRITICAL COMPONENTS OF INKJET PRINTING IS THE INK USED NK CHEMISTRY AND FORMULATIONS CAN NOT ONLY DICTATE PART AT LEAST THE FINAL QUALITY OF THE PRINTED IMAGE ’ BRILLIANCE OF COLOUR THE IMAGE VISCOSITY AND OTHER PROPERTIES CAN ALSO HAVE AN IMPACT ON THE DROP EJECTION CHARACTERISTICS AND THEREFORE THE RELIABILITY OF THE... - Page 9 Pigmented/Dye-based Inks Another major recent development in the inkjet printing industry is the successful implementation and commercialisation of pigmented inks in colour printing applications. Many companies including recognised colour quality leaders like 3M, Dupont and Kodak already have pigmented inkjet ink products on the market. Dye based inks are made by completely dissolving dyes in a carrier that enables the dye to be easily applied.
- Page 10 Solvent/Oil-based Inks Solvent-based inks are commonly used in industrial marking or coating applications where the printing is done on a nonporous substrate such as plastic, metal, or glass. Because no absorption or penetration occurs, the printed image relies on quick evaporation of the ink solvent to be fixed onto the substrate.
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Page 11: Designs On Inkjet Paper
Wet rub and scuff resistance (no ink smearing); • Lateral ink spread to enhance text resolution and colour-to-colour bleed by controlling the dot diameter. (The resolution specified by a printer can only be achieved through using the right substrate); • Sufficient stiffness for feeding through printer. -
Page 12: The Question Is
The colour of an image can be corrected either in the imaging application or in the printer driver. If you have several images from the same source, e.g. - Page 13 20ºC to 28ºC and 30% to 70% humidity. For the best results carefully remove the print from the printer once it had finished printing and place it flat in a warm dry environment with good air circulation. Normally a print will dry in several minutes, however if you plan to print on the back it is advisable to wait a couple of hours.
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Page 14: Inkjet's Different Images
The facts are that: • by end 2002, over 50% of the SOHO printer market is expected to have turned to colour - this statistic includes both laser and inkjet printer options, with the latter steadily gaining dominant market share;... - Page 15 SOHO Paper Demands Cut size stock for SOHO printing environments can be split into four main types: - Glossy coated paper is ideal for photo- realistic imaging, but often considerably more expensive due to the PE coating, the binding systems, the different pigments, namely special pigments which allow high transparence and high absorption and/or the fixation agent.
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Page 16: The Larger Chunk
The Larger Chunk NOTHER MARKET SECTOR WHERE INKJET PRINTING HAS MADE HUGE INROADS IN RECENT YEARS IS LARGE FORMAT PRINTING The introduction of wider print heads and multiple arrays coupled with the availability of increasingly high performance inks - UV curing, water-resistant, pigmented inks (see Putting the Ink into Inkjet, pages 8-10) - have brought about a revolution in the large format application capabilities of inkjet. -
Page 17: Colour In Profile
While it allows an inkjet printer manufacturer to create a single profile for multiple operating systems. The specification divides colour devices... -
Page 18: Jetting Trends
, O M 2002) AGAZINE PRIL As a backdrop to all this, inkjet printer manufacturers are continually looking at new ways of creating a competitive edge. With R&D spending continually being ploughed into means of decreasing drop size and increasing resolution and multi-drop / variable drop technological advances. - Page 20 M-real Digital imaging would like to thank all the companies that contributed to the production of this brochure. M-real Digital imaging AN DER GOHRSMÜHLE 51465 BERGISCH GLADBACH DEUTSCHLAND/GERMANY TEL.: +49(0)2202 - 152052 FAX: +49(0)2202 - 152805...