www.dimatix.com Galaxy PH 256/50 AAA PDS00044 Rev. 02 03/12/07 The Spectra® Galaxy PH 256/50 AAA is a high performance, robust and reliable printhead designed for a broad range of industrial and commercial printing applications such as wide format graphics, addressing, and packaging at resolutions up to 600 dpi. The Galaxy Printhead 256/50 AAA is an ink jet print-head offering complete fluid support and signal processing capabilities for a wide range of jetting fluids. Within the printhead’s jetting assembly, four electrically independent piezoelectric slices, each with 64 addressable channels, are combined to provide a total of 256 jets. The nozzles are arranged in a single line at a 0.010 inch distance between nozzles. The jetting assembly contains serial-to-parallel converters for selecting which jets to fire. The channels are daisy-chained into two serial data streams using the Head Interface Board. A high-voltage fire pulse with controlled slew rates is used to actuate the pumping chambers within each channel. The fluid interface is through the on-head reservoir, which has an integrated filter and fluid level sensor. This permits tight control over the fluid supply and also helps maintain a meniscus vacuum, used to prevent fluid weeping and air ingestion at the nozzles. An additional pneumatic interface allows for an external deaeration vacuum (incorporating Dimatix’s patented lung technology). For thermal control, a heater cartridge and thermistor temperature sensor are built into the printhead’s jetting assembly. Features: 50 picoliter calibrated drop size 256 individually addressable, inline nozzles Excellent jet straightness Excellent channel to channel uniformity High frequency continuous operation Head Interface Board for serial data transmission Ink reservoir, deaeration system, and fluid filter Ink level sensor Permits high viscosity jetting fluids Orientation independent Designed for long service life Temperature control Compatible with aqueous fluids Spectra® Galaxy PH 256/50 AAA 256-Channel Jetting Assembly www.dimatix.com Galaxy PH 256/50 AAA PDS00044 Rev. 02 03/12/07 The Spectra® Galaxy PH 256/50 AAA is a high performance, robust and reliable printhead designed for a broad range of industrial and commercial printing applications such as wide format graphics, addressing, and packaging at resolutions up to 600 dpi. The Galaxy Printhead 256/50 AAA is an ink jet print-head offering complete fluid support and signal processing capabilities for a wide range of jetting fluids. Within the printhead’s jetting assembly, four electrically independent piezoelectric slices, each with 64 addressable channels, are combined to provide a total of 256 jets. The nozzles are arranged in a single line at a 0.010 inch distance between nozzles. The jetting assembly contains serial-to-parallel converters for selecting which jets to fire. The channels are daisy-chained into two serial data streams using the Head Interface Board. A high-voltage fire pulse with controlled slew rates is used to actuate the pumping chambers within each channel. The fluid interface is through the on-head reservoir, which has an integrated filter and fluid level sensor. This permits tight control over the fluid supply and also helps maintain a meniscus vacuum, used to prevent fluid weeping and air ingestion at the nozzles. An additional pneumatic interface allows for an external deaeration vacuum (incorporating Dimatix’s patented lung technology). For thermal control, a heater cartridge and thermistor temperature sensor are built into the printhead’s jetting assembly. Features: 50 picoliter calibrated drop size 256 individually addressable, inline nozzles Excellent jet straightness Excellent channel to channel uniformity High frequency continuous operation Head Interface Board for serial data transmission Ink reservoir, deaeration system, and fluid filter Ink level sensor Permits high viscosity jetting fluids Orientation independent Designed for long service life Temperature control Compatible with aqueous fluids Spectra® Galaxy PH 256/50 AAA 256-Channel Jetting Assembly  Product DataSpectra® Galaxy PH 256/50 AAA Product DataSpectra® Galaxy PH 256/50 AAA Parameter Galaxy PH 256/50 AAA Number of addressable jets 256 Nozzle spacing 254 microns [0.010 in.] Nozzle diameter 42 microns Calibrated drop size 50 picoliters Adjustment range for drop size 45 - 55 picoliters Drop size variation, 1 sigma* 5% Jet straightness, 1 sigma 5 mrad [0.29°] Nominal drop velocity 8 m/sec Drop velocity variation, 1 sigma* 5% Crosstalk, maximum 5% Operating temperature range up to 90°C [194°F] Fluid viscosity range (at jetting temperature) 8 - 20 cP Compatible jetting fluids Organic solvents; UV curables, Aqueous Maximum operating frequency 20 kHz Electrical interface RS-422 Ink filter 8 microns absolute Meniscus vacuum 6.3 - 8.7 mBar[ 2.5 - 3.3 in. wg] Lung Vacuum 750 mBar [22 in. Hg gage] *at constant frequency Physical Characteristics Jetting Characteristics Head Interface Board On-Head Reservoir Jetting Printhead footprint 65 mm x 102 mm [ 2.57 in. x 4.0 in] Nozzle plate footprint 25 mm x 102 mm [ 1.0 in. x 4.0 in] Nozzle line length 64.8 mm [2.55 in] Height 111.40 mm [4.38 in] Approx. weight 640 g Assembly [22.57 oz] Normalized Velocity Frequency (kHz) Galaxy 50 AAA Velocity Frequency Response 0 2 4 6 8 10 12 14 16 2018 0.4 0.2 0.0 0.6 0.8 1.2 1.0 Normalized Drop Mass Frequency (kHz) Galaxy 50 AAA Drop Mass Frequency Response 0 2 4 6 8 10 14 16 1812 20 1.0 1.2 0.8 0.6 0.0 0.2 0.4 Product data presented above are for guideline purposes only. For design and engineering work using this product, please contact Dimatix Technical Support for the appropriate Product Manual containing full Product Specifications. PDS00044 Rev. 02 03/12/07 Corporate Office: New Hampshire Facility: Japan Office: FUJIFILM Dimatix, Inc. FUJIFILM Dimatix, Inc. Advanced Marking Business Division 2230 Martin Avenue 109 Etna Road FUJIFILM Corporation Santa Clara, CA 95050 Lebanon, NH 03766 Midtown West, 7-3, Akasaka 9-Chome USA USA Minato-ku, Tokyo 107-0002 Japan Tel: (408) 565-9150 Tel: (603) 443-5300 Tel: +81 3 6271 1091 Fax: (408) 565-9151 Fax: (603) 448-9870 Fax: +81 3 6271 1165 Email: info@dimatix.com Email: info@dimatix.com E-mail: front.ambd@fujifilm.co.jp European Office: China Office: Tel: +44 7739 863 505 Tel: + 86 139 2387 1043 Fax: +44 870 167 4328 Fax:+ 86 755 2643 9648 Email: euro@dimatix.com Email: china@dimatix.com Korean Office: Tel: +82 2 6242 6012 Fax: +82 2 6247 6012 Email: korea@dimatix.com www.dimatix.com