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XJ128 and XJ128 Plus Printhead

XJ128 Guide to Operation

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Xaar Document no: D031010302 Version A

Page 3

Printhead datum locations ........................................................................................... 16

Print distance............................................................................................................... 17

Angle of printhead relative to substrate ....................................................................... 17

Thermal management ...................................................................................................... 18

Printhead temperature ................................................................................................. 18

Ink connection .................................................................................................................. 19

Mechanical system design ............................................................................................... 21

Printhead shock and vibration ..................................................................................... 21

Printhead enclosure..................................................................................................... 21

Multiple printheads ...................................................................................................... 21

Substrate / media or printhead motion ........................................................................ 21

Electrical Functions .....................................................22

Function overview ............................................................................................................ 22

Signal level definition ....................................................................................................... 23

Signal descriptions ........................................................................................................... 24

Electrical connection to the printhead .............................................................................. 25

Grounding and isolation ................................................................................................... 26

Electrical Specifications and Data ...............................27

Electrical requirements..................................................................................................... 27

Absolute maximum electrical ratings ........................................................................... 27

Power supply sequencing............................................................................................ 27

Recommended electrical operating conditions ............................................................ 29

Temperature compensation......................................................................................... 30

Data structure................................................................................................................... 31

Configuration data structure ........................................................................................ 31

Cycle order .................................................................................................................. 31

Phase triggering .......................................................................................................... 32

Print data structure ...................................................................................................... 32

Electrical system design................................................................................................... 35

Power supply and grounding connections................................................................... 35

Cable lengths and signals ........................................................................................... 36

ESD and EMC considerations ..................................................................................... 36

Ink Supply System Design...........................................37

Ink supply materials compatibility..................................................................................... 37

Ink preparation ................................................................................................................. 37

Good ink ...................................................................................................................... 37

Ink filtration .................................................................................................................. 37

Providing a negative pressure ink supply......................................................................... 38

Gravity fed negative pressure ink supply..................................................................... 38

Vacuum fed negative pressure ink supply ................................................................... 39

Ink supply system design ................................................................................................. 39

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Содержание XJ128 Series

Страница 1: ...Guide to Operation XJ128 High Performance Ink Jet Printhead XJ128 200 XJ128 200 Plus XJ128 360 XJ128 Guide to Operation Xaar Document no D031010302 Version A Xaar Confidential ...

Страница 2: ...ad XJ128 Guide to Operation Xaar Document no D031010302 Version A Page 1 XAAR XJ128 Guide to Operation _______________________________ Xaar Science Park Cambridge CB4 OXR United Kingdom Phone 44 0 1223 423663 Fax 44 0 1223 423590 ...

Страница 3: ...e cap 9 2 3 5 Installation and pre flushing 9 2 3 6 Hot plugging 10 2 4 Storage and shipment 10 2 4 1 Storage conditions 10 2 4 2 Shipping conditions 10 2 5 Product support 11 3 Product Description 11 3 1 Parts description 11 3 1 1 Actuator 11 3 1 2 Electrical connector 11 3 1 3 Chassis 11 3 1 4 Cover 12 3 1 5 Driver chips 12 3 1 6 Ink inlets and filter 12 3 1 7 Nozzle plate 12 3 1 7 1 XJ128 200 a...

Страница 4: ...on 26 6 Electrical Specifications and Data 27 6 1 Electrical requirements 27 6 1 1 Absolute maximum electrical ratings 27 6 1 2 Power supply sequencing 27 6 1 3 Recommended electrical operating conditions 29 6 1 4 Temperature compensation 30 6 2 Data structure 31 6 2 1 Configuration data structure 31 6 2 2 Cycle order 31 6 2 3 Phase triggering 32 6 2 4 Print data structure 32 6 3 Electrical system...

Страница 5: ...aintenance methods 44 8 3 1 Pressure purge 44 8 3 2 Vacuum purge 45 8 3 3 Wiping 45 8 3 4 Vacuum wiping 46 8 3 5 Blotting 46 8 3 6 Ink Spitting 47 8 3 7 Capping 47 9 Image Processing 48 9 1 Image processing background 48 9 1 1 File formats 48 9 1 2 Image processing software 49 9 1 3 Colour spaces 49 9 2 Processing an image 50 9 2 1 Process flow 50 9 2 2 Resolution and sizing 51 9 2 3 Changing colo...

Страница 6: ...tions 61 Recycling packaging materials 61 Recycling the printhead 61 Appendix B Document History and Changes 62 Revision history 62 Document changes 62 Appendix C Patents Trademarks and Product Marking 63 Patents 63 Trademarks 63 Product marking 63 Copyright 63 Safety standards 63 CE Compliance and working environment 64 Appendix D Mechanical drawing 65 Appendix E The Xaar flex cable 66 Glossary 6...

Страница 7: ...nce Reliability and Lifetime Image Processing Trouble Shooting Feedback and Support Appendices This edition applies to the above product only and to all subsequent releases and modifications until otherwise indicated in new editions Changes are made occasionally to the information herein any such changes will be reported in subsequent revisions Note that the use of this symbol indicates that the t...

Страница 8: ...press or implied by law custom or otherwise as to its accuracy completeness or correctness or its fitness for purpose or that use of a device described herein or reproduction of the contents will not infringe any rights of any third party or otherwise whatsoever and the user agrees that it has not relied on any Information in this manual is intended for reference only Equipment and documentation i...

Страница 9: ...wall piezo based technology 2 2 1 Xaar piezo technology Xaar s printhead technology is based upon a piezo ceramic material PZT When a voltage is applied across this material the material distorts or bends Xaar uses this phenomenon by machining rows of parallel channels into a PZT block An electrode is then placed onto the sides of the channel walls allowing a voltage to be applied across it The wa...

Страница 10: ...inthead the nozzle plate has a special coating called a non wetting coating NWC This keeps the nozzle plate free of excess ink Contact with this surface must be avoided to prevent damage to this coating Damage to this coating can cause a reduction in the performance of the printhead With all models of the XJ128 printhead contact with the nozzle plate surface must be minimised to avoid damage to th...

Страница 11: ...should then be purged out of the printhead with clean dry filtered air This process is detailed in the Ink and Printhead User Guide documentation Once clean the printhead should be stored in it s packaging If the original packaging is not available a clean opaque ESD proof bag will suffice 2 4 2 Shipping conditions In conjunction with the unopened packaging as provided by Xaar the XJ128 printhead ...

Страница 12: ...e 3 1 Isometric views of the XJ128 printhead 3 1 1 Actuator The actuator not visible in figure 3 1 is located behind the nozzle plate and is the active element of the printhead The actuator consists of an array of ink channels which are sawn into a piezo ceramic material The actuator converts the electrical energy into a pressure wave necessary to eject drops of ink 3 1 2 Electrical connector Inte...

Страница 13: ... of a 15µm stainless steel mesh This is the final filter acting as a complement to the filter in the ink delivery system For maximum life staged filtering is essential with the OEM incorporating a primary filter in their design See section 7 for details 3 1 8 Nozzle plate Depending upon the model of the XJ128 printhead the nozzle plate properties differ In both cases the nozzle plate is the plasti...

Страница 14: ... XJ128 200 XJ128 360 XJ128 200 Plus Unit Colour of insulator Blue Black Purple Nozzle plate Non wetting Non wetting Wetting Active nozzles 128 Nozzle pitch 137 1 m Nozzle diameter 50 35 50 m Nominal drop volume1 80 40 70 pl Drop velocity2 5 0 6 0 5 0 m s Maximum drop deviation 1 8 1 0 1 8 degrees Ambient temperature range 10 to 40 10 to 40 10 to 40 o C Ambient humidity range non condensing 10 to 8...

Страница 15: ...bject to the use of a successful printhead maintenance system Printhead life and performance is dependant on several key factors Materials compatibility of ink and system components Quality of printhead maintenance System design and environmental conditions Although this document does not cover these factors extensively many of these issues can be discussed with your local sales engineering repres...

Страница 16: ...e of the printhead Top means position closest to cover side Bottom means position closest to chassis side Figure 4 1 Printhead side definition There are a total of 134 nozzles viewable on the nozzle plate The active nozzles are numbered 1 to 128 Nozzle 1 is referenced to the datum features on the printhead Adjacent to nozzle 1 are 4 guard or dummy nozzles These are shown in figure 4 3 Adjacent to ...

Страница 17: ... down Connector facing up shown in figure 4 2b 3 With the nozzle line vertical or close to vertical and ink inlet from beneath This is the best orientation for easiest filling of the printhead with ink as shown in figure 4 2c Positions set between the three primary orientations are also achievable as indicated in figure 4 2 Figure 4 2 Printhead orientations 4 2 2 Printhead datum locations The prin...

Страница 18: ... satellite drop formation is increased significantly at high print distances reducing overall print quality A consistent print distant must be maintained during operation to ensure optimal print quality Figure 4 4 Print distance 4 2 4 Angle of printhead relative to substrate The XJ128 printhead is designed to be mounted at an angle relative to the substrate to achieve the desired printing resoluti...

Страница 19: ...ctly process the image to be printed may result in a saw tooth effect caused by the A B C firing sequence Figure 4 5 Angled printheads for printing at specified resolution 4 3 Thermal management The absolute maximum temperature of the printhead must not exceed 55o C If the printhead exceeds this temperature permanent damage can occur 4 3 1 Printhead temperature Temperature control of the printhead...

Страница 20: ...ead is through the thermally conductive aluminium chassis This should be used to cool the printheads during operation by removing heat generated by the printheads through a mechanical interface with a heat sink 4 4 Ink connection Ensure that clean ink connectors are used Ink connections to the printhead should be prompt to reduce risk of contamination Only use approved inks and associated cleaning...

Страница 21: ...upplies Note 0 1KPa to 1 0KPa corresponds to 1mbar to 10mbar or 10mm H20 to 100mm H20 Where 1kPa 10mbar 100mm ink Please refer to appropriate the Ink and Printhead User Guide documentation for specific ink pressure supply values The negative pressure of the ink supplied to the printhead must be referenced to the lowest printing nozzle in the printhead This must be remembered when the printhead is ...

Страница 22: ... minimise the distance between printheads This will help to minimise drop placement errors due to substrate stretch and velocity variation between the first and last printheads 4 5 4 Substrate media or printhead motion To ensure adequate print quality the substrate media motion should be smooth and as straight as possible Errors due to substrate motion can cause drop placement inaccuracies that ma...

Страница 23: ...l major electrical printhead control functions that are to be handled by the customer application Table 5 1 details the pin out of the electrical connector and the functions of each signal The electrical interface is common for all XJ128 printhead models Figure 5 1 shows the pin out convention for the XJ128 printhead Figure 5 1 XJ128 printhead pin out convention ...

Страница 24: ...ted 16 GND Supply 5V logic ground 17 VDD Supply 5V logic supply 18 TEST_10 Input Must be tied to VDD 19 SCK Input Main sample clock data strobe 20 nSS1 Input Chip select for MOSI MISO chip 1 21 TEST_7 Input Not connected 22 TEST_8 Input Not connected 23 TEST_9 Input Not connected 24 READY Output Printhead ready used for signal timing 25 PHO Input Phase order select 26 nFIRE Input Printhead fire tr...

Страница 25: ...w error output signal that indicates a high printhead temperature Will stay active until temperature goes below the high temperature threshold level set to 45 55 Celsius An external system responding to an nFAULT alarm should stop printing and wait for the print head to cool The nFAULT driver does not have hysteresis and will begin to switch at a temperature between 45 50 C due to noise induced in...

Страница 26: ...nt data has been loaded or not READY Active high An output indication that two of the three phase firing sequence is complete Since the transmission of data is allowed two clock cycles after nFire this signal does not mean that the head is busy but is used as a timing pulse so the system can stay synchronised nFIRE is sampled while READY is active high level PHO Active high This signal determines ...

Страница 27: ...ical connector 5 5 Grounding and isolation Please note that the following points should be addressed when interfacing with the XJ128 printhead If a Switched mode power supply is used ensure it is adequately screened By default use screened cables Filter the mains input to the power supply Use a short thick connection from the incoming earth of the mains supply direct to the chassis of the printing...

Страница 28: ...0 V High current high voltage supply VPPH 0 5 to 35 0 V Low current high voltage supply VPPL 0 5 to 35 0 V Logic input voltage VI 0 5 to VDD 0 5 V Logic output voltage VO 0 5 to VDD 0 5 V High current supply feed IPPH 0 200 per 64 channels mA Low current supply feed IPPL 5 mA Current per pin I 100 mA Table 6 1 Absolute maximum electrical ratings The maximum capacitance for the input and output pin...

Страница 29: ...iming requirements The initial voltage supply must stabilise before switching the second voltage supply On Sequence VDD VPPH VPPL nRESET Condition 1 0V 0V 0V ACTIVE 2 VDD 0V 0V ACTIVE 3 VDD VPPH VPPL ACTIVE 4 VDD VPPH VPPL INACTIVE tPower on 100 ms Table 6 3 Power up on sequence Off Sequence VDD VPPH VPPL nRESET Condition 1 VDD VPPH VPPL INACTIVE 2 VDD VPPH VPPL ACTIVE 3 VDD 0V 0V ACTIVE 4 0V 0V 0...

Страница 30: ...ock frequency CLK 0 95 1 0 1 05 MHz Table 6 5 Recommended electrical operating conditions Table 6 6 describes the maximum current and loading for the printhead signals not already detailed in this document Parameter Symbol Max input current Max input load Unit Chip select for MOSI MISO chip 1 nSS1 1 0 A Chip select for MOSI MISO chip 2 nSS2 1 0 A High temp error signal nFAULT 4 0 mA Driver chip lo...

Страница 31: ...ead is an internal printhead function This section is therefore for information only As the operational temperature of the printhead changes the viscosity of the ink in the printhead will also change This change in viscosity would influence the drop volume and performance of the printhead if not compensated for The XJ128 automatically changes the driver chip voltage to compensate for the change in...

Страница 32: ...grouping into cycles The first firing nozzle is an A cycle The last firing nozzle is a B cycle If the printhead is used bi directionally the order of firing is reversed for the return pass i e C B A by use of a phase order signal PHO on the user interface The cycle order sequence is controlled by the user application through the interface connector The A B C cycle order is called the Normal cycle ...

Страница 33: ...elay and cannot be changed Printhead Cycle delay Units XJ128 60 s Table 6 10 XJ128 cycle delay 6 2 4 Print data structure The first bit shifted in will be the most significant bit in the shift register that is bit 63 which will drive channel 64 or 128 The last bit which is bit 0 is the least significant bit and will drive channel 1 or 65 The data loading order structure is shown in table 6 11 Data...

Страница 34: ...ata may be loaded into the shift register when the READY signal has switched to the inactive state During this time the printhead could be printing the first line of data Once all the pixel data has been loaded the nFIRE signal is triggered to fire the loaded data as droplets It is important that input PHO is stable before nFIRE is triggered nFIRE ensures that all three cycles A B and C are printe...

Страница 35: ... MOSI data hold time from SCK T13 100 ns nSS asserted to MISO valid delay time T14 120 ns SCK to MISO valid delay time T15 240 ns nSS negated to MISO tri state delay time T16 240 ns PHO valid to CLK set up time T17 100 ns PHO valid to nFIRE asserted T18 0 ns CLK to nFIRE hold time T19 10 ns CLK to PHO hold time T20 10 ns CLK to READY negated delay time T21 240 ns CLK to READY asserted delay time T...

Страница 36: ... 6 6 Power supply and grounding arrangement The negative side of the logic and high voltage supplies should be isolated within the driver electronics note that they are joined within the printhead and must not be joined at any other point The printhead cable does not need to be screened The printhead s and driver electronics should be enclosed The enclosure should be grounded to the printer system...

Страница 37: ...ESD path it is possible that the discharge of any electrostatic charge may corrupt the printhead data and or prevent the printhead from firing It is recommended that the printing system should be designed to minimise the build up of electrostatic charge on the media All printhead connector pins have ESD protection The maximum protection level is 2 kV For further details ESD compliance refer to App...

Страница 38: ... It is recommended that ink supply systems use only these Xaar compatibility approved components The same material from different manufacturers can yield totally different materials compatibility results 7 2 Ink preparation 7 2 1 Good ink It is imperative that only approved inks are used with the printhead Materials compatibility and performance of the inks can be guaranteed and help to provide a ...

Страница 39: ...360 printheads means that the negative head for the ink supplied to the printhead differs to that when supplying ink to the XJ128 200 Plus printhead In general the negative head of ink required supplying ink to the XJ128 200 Plus printhead is greater than that required supplying ink to the standard printheads fitted with a non wetting coating The negative pressure used with the printhead and the a...

Страница 40: ...ns in the ink supply Figure 7 2 Vacuum fed ink supply system 7 4 Ink supply system design An ink supply system should consist of several components A small ink reservoir a stores a small volume of filtered ink supplying it to the printhead as it is required at the recommended pressure As the ink in the small reservoir is consumed this must be replaced Most commonly a small liquid pump b supplies t...

Страница 41: ...id pumping air into the ink supply system It is possible for the ink pump to shed particles so it is recommended that this be placed before the primary system ink filter 7 4 3 System filter The system ink filter must be capable of filtering the ink to an adequate level In use it is important the filter does not contain air this can cause response delays in the ink feedback system 7 4 4 Ink tubing ...

Страница 42: ...solution and procedures These will be ink specific and are detailed in the corresponding Ink and Printhead User Guide Filling the printhead for the first time is an important task that must be achieved minimising the amount of air left in the printhead and ink supply system The level of success achieved from the first filling of the printhead depends on several factors including the orientation of...

Страница 43: ...bles are not in the vicinity of the internal ink filter 7 5 3 First Use Prior to printing a start up maintenance cycle should be performed on the XJ128 printheads The XJ128 printheads that have NWC should be purged with a small amount of ink The NWC action of the printhead will self clean the ink from the surface of nozzle plate and printing should not commence until the surface is seen to be clea...

Страница 44: ...ad maintenance Printhead maintenance is vital for a number of key reasons Printhead lifetime Printhead reliability Print quality The extent and nature of the printhead maintenance will determine how the final system performs with the printhead The aim of a maintenance cycle is to ensure a few simple conditions for the printhead The nozzle plate is clean of ink or debris Any build up of air in the ...

Страница 45: ...lease refer to the Ink and Printhead User Guide documentation for recommendations on which methods suit particular printhead and ink combinations 8 3 1 Pressure purge The pressure purge maintenance technique has two main functions Flush the nozzles clean of air or contamination Flush the nozzle plate clean of contamination7 The method consists of increasing the ink supply pressure until ink is for...

Страница 46: ...ng must not be used with the XJ128 200 and XJ128 300 printheads as these use a non wetting coating on the nozzle plate Wiping usually consists of the movement of a flexible blade SH 40 across the nozzle plate Wiping will often remove fibres that are partially lodged in a nozzle and have resisted purging It can however re deposit contamination in another nozzle Wiping should be carried out in one d...

Страница 47: ...ping of printhead The vacuum wiping maintenance method is normally used after a printhead purge to remove excess ink This is an ideal maintenance technique for the printheads with NWC 8 3 5 Blotting When using the XJ128 200 and XJ128 360 printheads with some inks it may be necessary to adopt a blotting maintenance technique The blotting pad should be a non shedding absorbent cloth or sponge Take c...

Страница 48: ...a more reliable start up of the printhead The amount and frequency of spitting is ink and system dependant and should be determined empirically with each system design Ink spitting should not be used as a primary function in order to eliminate the requirement for regular printhead maintenance For further information please contact your appointed sales engineer 8 3 7 Capping Capping is a procedure ...

Страница 49: ...or each different combination of the printing ink substrate and printhead used in a particular system Whatever level of image processing control is required for an application there are some fundamental steps that need to be followed regardless of the application 1 Image must be the correct size for a particular application and printhead resolution 2 Image data must be in a CMYK or greyscale forma...

Страница 50: ... to be changed from RGB to CMYK although images are also scanned in CMYK and digital cameras can record images directly in to a CMYK format RGB and CMYK colour spaces are device specific For example a scanner will have a certain range of colours it can record and similarly printing inks only have a certain range of colours they can produce The range of colours perceived by the human eye is much hi...

Страница 51: ...h as Photoshop Size image for application Convert image in to required colour space Apply ink control such as a curve in Photoshop if necessary Split in to component ink channels if necessary Apply binary printing pattern such as diffusion dither in Photoshop Save in 1 bit bitmap format Print Adjust ink control binary patterning method Is image acceptable for application No Yes Process complete ...

Страница 52: ...int resolution in pixels inch of Xaar prinhead being used The size of the printed image is now displayed It is possible to re size an image to change the number of pixels it contains It is recommended not to increase the pixel size of an image as the software being used will have to interpret and add new data to the image that didn t already exist Figure 9 2 Image size menu option Decreasing the s...

Страница 53: ... and not directly into the required printing format a 1 bit bitmap When colour channels are split further into the process see Splitting ink channels section the output will be the required format 9 2 4 Ink control The printed output from a binary printhead will depend on the substrate used which will define the amount of drop spread For some applications such as coding and marking a substrate sho...

Страница 54: ...rves dialogue in Photoshop Note A curve or any other form of image suppression may only be performed on a CMYK or greyscale image format It is not possible to adjust an image when it is in its final 1 bit bitmap printing format 9 2 5 Splitting ink channels Before printing a colour image it must be split into its component colour channels C M Y and K This can be performed by a number of pieces of i...

Страница 55: ... Version A Page 54 9 2 6 Binary patterning methods A pattern must be applied to a monochrome image to allow image data to be represented by a single pixel intensity Some of the different patterns include Figure 9 7 Pattern dither Figure 9 8 Diffusion dither Figure 9 9 Halftone screen ...

Страница 56: ... Confirm selection Figure 9 10 Bitmap dialogue box in Photoshop 9 2 7 Saving an image for printing The processed monochrome images need to be saved in the correct format for the printer driver software If using a Xaar evaluation kit this format will be a 1 bit bitmap bmp This can be performed by a number of pieces of image processing software including Photoshop Photoshop example With the single c...

Страница 57: ...l resolution unit 1 vr Natural print direction The natural print direction is defined as the direction with nozzle 1 as the foremost nozzle Mounting angle The angle between a line through the centre of all nozzle plate holes and a line parallel with the print direction Table 9 1 Definitions for image transformation 9 2 8 1 Printing angle and horizontal vertical resolution ratios Figures 9 12 and 9...

Страница 58: ...s a simple as feeding the print head with vertical slices of the bitmap Image extraction for a slanted printhead is performed by feeding slanted slices of the bitmap These slanted slices can be visualised by imagining the line with solid black dots in figures 9 12 and 9 13 scanning across the bitmap just as the substrate passes beneath the printhead For every printhead position over the substrate ...

Страница 59: ...ver the bitmap Figure 9 15 XJ128 360 printhead superimposed over the bitmap It is then possible to simulate a non slanted print head by shifting individual rows in the bitmap as shown in the figure 9 16 This is then the orthogonal image that should be used to load into the printhead driver system Figure 9 16 Bitmap adjusted for XJ128 200 printhead ...

Страница 60: ...ant sections of this document not enable you to solve a problem or issue with the printhead then please refer to support section 8 2 of this document 10 2 Returning printhead s to Xaar Should you have any reason to return a printhead to Xaar please contact your local sales engineer and refer to the document XCP001 pdf Failure to do so could void warranty claims ...

Страница 61: ...neering representative for technical support In Europe In Americas XaarJet Xaar Americas Attn Sales Engineering Attn Sales Engineering Science Park 1300 Remington Rd Suite B Cambridge Schaumburg CB4 0XR Illinois 60173 England US Phone 44 0 1223 423663 Phone 1 847 490 2088 Fax 44 0 1223 423590 Fax 1 847 490 6849 Email support xaar co uk Email support xaar co uk Web www xaar co uk Web www xaar usa c...

Страница 62: ...accordance with local regulatory directives However it is recommended that the packaging be kept in case of any need to re package the head for shipment Recycling the printhead Recycling of materials used in the printhead are as per the normal electronic devices However the actuator part which contains some lead oxide must be disposed of as per local directives The lead oxide content is less than ...

Страница 63: ...Revision history Revision Date By Comment PA1 2003 10 23 TTE Preliminary revision of new format A 2004 01 05 JRT Final release of new version Document changes Minor document changes from the previous edition are given in the revision history chapter Major revisions are assigned a new suffix Publications are available from your regional office ...

Страница 64: ...ment does not give license to these patents Trademarks The following terms denoted by a trademark sign in this publication are trademarks of other companies as follows AMP AMP Incorporated Molex Molex Incorporated Motorola Motorola Incorporated Keytek Instrument Corporation Photoshop Adobe Systems Incorporated GretagMacbeth Amazys Holding AG XAAR and XaarJet are trademarks of the XAAR group of com...

Страница 65: ...g to avoid discharges into the printhead During installation of the print head in the application the head must be protected from electrostatic discharges on the connector The head can be compared with a normal CMOS circuit and must be ESD protected accordingly to avoid later problem caused by discharges The chip internal protection level is 2 kV This product has been designed in accordance with t...

Страница 66: ...XJ128 and XJ128 Plus Printhead XJ128 Guide to Operation Xaar Document no D031010302 Version A Page 65 Appendix D Mechanical drawing ...

Страница 67: ...le 128 Nozzle Hole 1 7 7 9 8 EXPLANATION OF NOZZLE LINE LINEARITY 2 Dummy Holes 4 Dummy Holes 9 8 10 0 95 32 3 1 1 B2 2 B1 2 3 65 0 2 0 1 7 35 2 0 05 max 11 5 A 0 6 max 0 6 max 4x 4 82 0 3 4 38 0 3 4 1 ISO TOP FRONT ISO BOTTOM FRONT 2 27 0 15 0 2 0 2 4 85 0 15 7 5 0 1 A 10 1 1 0 15 B 0 02 A C ISO BOTTOM REAR CONNECTOR AMP 6 176913 0 2 3 4 5 1 7 min D D 10 1 FILLET OF ADHESIVE ALL AROUND THE CAP 2 ...

Страница 68: ...nsertion Force 1 25 mm pitch thickness of cable at connecting end is 0 3 mm A suitable connector could be Molex ZIF connector 5597 30CPB When disconnecting the AMP connector you must exercise extreme care not to damage the cable or the connector Use a small screwdriver or wedge to force the male and female connectors apart Apply pressure to both sides simultaneously Using a PCB at the end of the f...

Страница 69: ...rcuit Media The surface that ink will be fired upon from the printhead Pixel Line A single line of drops fired from all the nozzles PZT Lead Zirconium Titanate Resolution The resolution in dots per inch is defined by the number of ink drops per unit length Print Swathe A single bad of print produced by one pass of the printhead TC Temperature Compensation NWC Non wetting coating Waveform The drive...

Страница 70: ...niscus 20 Materials compatibility 14 36 MISO 22 23 24 28 33 MOSI 22 23 28 31 33 negative pressure 19 20 37 38 nFAULT 22 23 28 33 non wetting coating 9 12 nozzle plate 9 11 13 14 15 16 NWC 9 12 64 piezo 8 11 power consumption 28 power sequencing 26 pre flushing 9 40 print quality 13 16 20 print resolution 13 17 48 printhead maintenance 13 14 41 44 Printhead maintenance 41 42 protective cap 9 PZT 8 ...

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