MXPA06012022A - Fluid ejection device - Google Patents

Abstract

A fluid ejection device comprising a first fluid feed source (204) having a first fluid feed source edge in communication with a substrate surface, first firing resistors (202a) disposed along the first fluid feed source and configured to respond to a first current to heat fluid provided by the first fluid feed source (204), and a reference conductor (250). The reference conductor (250) is configured to conduct the first current from the first firing resistors (202a), wherein the reference conductor (250) is disposed between the first fluid feed source edge and the first firing resistors (202a).

Description

FLUID EYING DEVICE FIELD OF THE INVENTION An ink jet printing system, as a mode of a fluid ejection system, can include a print head, an ink supply that provides liquid ink to the print head, and an electronic regulator that controls the printer head. The print head, as a mode of a fluid ejection device, ejects drops of ink through a plurality of orifices or nozzles. The ink is projected onto a printing medium, such as a sheet of paper, to print an image on the printing medium. The injectors are typically arranged in one or several series, such that the ejection of the ink from the nozzles is correctly ordered and causes characters or other images to be printed on the printing medium when the print head and the printing medium are moved on the one relative to the other In a typical thermal ink jet printing system, the print head ejects ink droplets by injectors rapidly heating small volumes of the ink located in vaporization chambers. The ink is heated with small electric radiators, such as thin film resistors referred to here as ignition resistors. The heating of the ink causes the ink to vaporize and be ejected by the injectors. To eject a drop of ink, the electronic regulator that controls the print head activates: an electric current from a power supply external to the print head. The electric current is passed through a selected ignition resistor to heat ink in a corresponding selected vaporization chamber and eject the ink by a corresponding injector. Known drop generators include a firing resistor, a corresponding vaporization chamber, and a corresponding injector. When the printheads of the ink nozzle have evolved, the number of drop generators in a printhead has increased to improve the printing speed and / or quality. The increase in the number of drop generators per print head has caused a corresponding increase in the number of input pads required in a given print head to energize the increased number of resistor ignitions.

In one type of print head, each ignition resistor is connected to a corresponding input pad to provide the power to energize the ignition resistance. An ignition input pad of the resistor becomes impractical as the number of ignition resistances increases. The number of drop generators per input pad is considerably increased in another type of printhead having primary ones. A simple power caqble provides power to all the ignition resistors in a primary. Each ignition resistance is connected in series with the power cable and the path of the purge source of a corresponding field effect transistor (FET). The door of each FET in a primary is connected separately to an energizable address that is shared by multiple primaries. Manufacturers continue to reduce the number of input pads and increase the number of drop generators in a given print head. A print head with fewer input pads typically costs less than a print head with more input pads. Also, a printhead with more drop generators typically prints with higher quality and / or print speed. In order to maintain costs and provide a particular swath height, the size of the given print head may not be changed considerably with an increased number of drop generators. As the drop generator density increases and the number of input pads decreases, in the given print head, the arrangements can become increasingly complex. For these and other reasons, there is a need for the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram illustrating one embodiment of an ink jet printing system. Figure 2 is a diagram illustrating a part of a given printer head mode. Figure 3 is a diagram illustrating an arrangement of drop generators located along an ink feed slot in a given printer head mode. Fig. 4 is a diagram illustrating a mode of an emphinking ignition switch cell in a given printer head mode.

Figure 5 is a schematic diagram illustrating an embodiment of an ink jet printer head that turns on the cell array. Figure 6 is a block diagram illustrating one embodiment of a given printer head arrangement. Figure 7 is a block diagram illustrating one embodiment of a reference conductor arrangement in a given print head. Figure 8 is a diagram of a plan view illustrating a mode of a section in a first metallic layer of a given print head. Fig. 9A is a diagram illustrating a partial cross-section of a given print head embodiment taken at the line position 9A in Fig. 8. Fig. 9B is a diagram illustrating a partial cross-section of a mode of a given printhead taken at the line position 9B in Figure 8. Figure 10 is a diagram illustrating a mode of a section of a given print head at the line position 10 in Figure 9VB.

Figure 11 is a block diagram illustrating a line arrangement of fire in a given printer head mode. Figure 12 is a diagram of a plan view illustrating a modality of a section of a given print head. Fig. 13 is a diagram illustrating a partial cross-section of a given print head embodiment taken at the line position 13 in Fig. 12.

DESCRIPTION OF THE INVENTION In the following detailed description, the reference is made to the accompanying drawings that form a part hereof, and in which specific embodiments in which the invention can be practiced is shown by way of the illustration. In this aspect, the directional terminology, such as "summit", "background", "front", "back", "driving", "tracking", etc., is used in terms of the orientation of the Figure (s) described . As the modal components of the present invention can be placed in several different orientations, the directional terminology is used for purposes of illustration and ho is in no way restrictive. It should be understood that other embodiments may be used and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description, therefore, should not be taken in a restrictive sense, and the scope of the present invention is defined by the appended claims. Figure 1 illustrates one embodiment of an ink injector printing system 20. The ink injector printing system 20 constitutes a mode of a fluid ejection system that includes a fluid ejection device, such as the fluid assembly. the ink jet printer head 22, and a fluid supply assembly, such as the ink supply assembly 24. The ink jet printer system 20 also includes a mounted assembly 26, a media assembly for printing media 28, and an electronic regulator 30. At least one power supply 32 provides the power with various electrical components of the ink jet printing system 20. In one embodiment, the ink jet printhead assembly 22 includes at least a printer head or a given printer head 40 that ejects ink droplets through a plurality of holes or nozzles 34 toward a print medium 36 for printing on the media 36. The print head 40 is a mode of a fluid ejection device. The printing medium 36 can be any type of convenient sheet material, such as paper, card reservation, slides, Mylar, fabric, and the like. Typically, the nozzles 34 are arranged in one or several columns or placed in an order such that correctly ordered ejection of the ink from the nozzles 34 causes characters, symbols, and / or other graphics or images to be printed on the print medium 36 as the assembly of the ink injector print head 22 and the printing medium 36 are moved relative to one another. While the following description refers to the ejection of the ink from the assembly of the print head 22, it is understood that other liquids, fluids or flowable materials, including clear fluid, can be ejected from the assembled printhead 22. The ink supply assembly 24 as a mode of a fluid supply assembly provides the ink to the print head assembly 22 and includes a reservoir 38 for storing the ink. As such, the ink flows from the reservoir 38 to the ink jet print head assembly 22. The ink supply assembly 24 and the ink jet printhead assembly 22 can form a delivery system for address ink single or a recirculating ink delivery system. In a single address ink delivery system, substantially all of the ink provided to the inkjet printhead assembly 22 is consumed during printing. In a recirculating ink delivery system, only a portion of the ink, provided to the printer head assembly 22, is consumed during printing. When such ink not consumed during printing is returned to the ink supply assembly 24. In one embodiment, the ink jet print head assembly 22 and the ink supply assembly 24 are housed together in an ink jet cartridge. ink or pen. The ink jet cartridge or the pen is a mode of a fluid ejection device. In another embodiment, the ink supply assembly 24 is separated from the ink jet print head assembly 22 and provides the ink to the ink jet print head assembly 22 by an interface junction, such that a tube supply (not shown). In either one or the other mode, the reservoir 38 of the ink supply assembly 24 can be removed, replaced, and / or refilled. In one embodiment, where the ink jet printer head assembly 22 and the ink supply assembly 24 are housed together in an ink jet cartridge, the bin 38 includes a local reservoir located within the cartridge and may also include a larger deposit located separately from the cartridge. As such, the separate, larger deposit serves to fill the local deposit. Accordingly, the separate, larger and / or local deposit may be removed, replaced, and / or refilled. Mounting the assembly of the positions of the ink nozzles 26 in the assembly of the print head 22 relative to the assembly of the transport means 28 and to the assembly of the positions of the transport means 28 printing means 36 relative to the assembly of the head ink jet printer 22. Thus, a print zone 37 is defined adjacent the nozzles 34 in an area between the ink jet print head assembly 22 and the print medium 36. In one embodiment, the ink jet assembly the ink jet printer head 22 is an assembly of the scanning head print head. As such, assembling the assembly 26 includes a carriage (not shown) for moving the ink jet print head assembly 22 relative to the media transport assembly 28 to scan the printing medium 36. In another embodiment, the assembly of the ink jet printer head 22 is a non-scan type print head assembly. As such, mounting the assembly 26-fixes the ink jet printhead assembly 22 in a prescribed position relative to the media transport assembly 28. Thus, the assembly of the positions of the transport of printing means 28 relative to the assembly of the inkjet print head 22 The printer controller or electronic controller 30 typically includes a processor, fixed programs, and other electronic, or any combination of this, to communicate with and control the assembly of the ink jet printer head 22, assembling the assembly 26, and the media transport assembly 28. The electronic controller 30 receives data 39 from a host system, such as a computer , and usually includes memory to temporarily store data 39.

Typically, the data 39 is sent to the ink jet printing system 20 along an electronic, infrared, optical, or other information transfer path. The data 39 represents, for example, a document and / or file to be printed. As such, the data 39 forms a print job for the ink injector printing system 20 and includes one or more print work orders and / or order parameters. In one embodiment, the electronic controller 30 controls the assembly of the ink jet print head 22 for ejecting ink droplets from the nozzles 34. As such, the electronic controller 30 defines an ejected drop pattern of ink that forms characters. , symbols, and / or other graphics or images on the printing medium 36. The pattern of ejected ink drops is determined by the print work orders and / or order parameters. In one embodiment, the ink jet print head assembly 22 includes a print head 40. In another embodiment, the ink jet print head assembly 22 is a wide array or a multiple assembly of the print head. In a wide-ranging embodiment, the ink jet print head assembly 22 includes a carrier, which carries the given print head 40, provides electrical communication between the given print head 40 and the electronic controller 30, and provides fluidity to the communication between the given print head 40 and the ink supply assembly 24. Figure: 2; is a diagram illustrating a part of a given print head embodiment 40. The given print head 40 includes a series of ejected print elements or fluids 42. The print elements 42 is formed on a substrate 44, which has a groove. ink feed 46 formed there. As such, the ink feed slot 46 provides a supply of liquid ink to the printing elements 42. The ink feed slot 46 is a mode of a fluid power supply. Other fluid power supply embodiments include, but are not limited to, corresponding individual ink feed holes with corresponding vaporization chambers and multiple ink feed trenches shorter than each feed group corresponding to the fluid ejection elements. A thin film structure 48 has an ink feed channel 54 formed therein which communicates with the ink feed slot 46 formed in the substrate 44. An orifice layer 50 has a front face 50a and an aperture injector 34 formed on the front face 50a. The orifice layer 50 also has an injector chamber or the vaporization chamber 56 formed therein which communicates with the opening injector 34 and an ink feed channel 54 of the thin film structure 48. An ignition resistance 52 is positioned within the vaporization chamber 56 and cables 58 electrically coupled to the ignition resistor 52 to the circuitry by controlling the application of the electric current by selected ignition resistors. A drop generator 60 as referred to herein includes the ignition resistance 52, the injection chamber or the vaporization chamber 56 and the opening injector 34. During printing, the ink flows from the ink feed slot 46 to the vaporization chamber 56 via the ink feed channel 54. The opening injector 34 is operatively associated with the ignition of the resistor 52 such that droplets of the ink within the vaporization chamber 56 are ejected by the opening injector 34. (eg, substantially normal for the firing plane of the resistor 52 :) and towards the printing medium 36 for energizing the firing resistor 52. Examples of given print head modes 40 include a thermal print head, a piezoelectric printer head, an electrostatic printer head, or any other type of fluid ejection device known in the art that can be integrated into a multi-layer structure. The substrate 44 is formed, for example, of silicon, glass, ceramic, or a stable polymer and the thin film structure 48 is formed to include one or more layers of passivation or insulation layers of silicon dioxide, silicon carbide, Silicon nitride, tantalum, polysilicic crystal, or other suitable material. The thin film structure 48, also included in at least one conductive layer, which defines the ignition resistance 52 and cables 58. In one embodiment, the conductive layer comprises, for example, aluminum, gold, tantalum, tantalum-aluminum , or another metal or metal alloy. In one embodiment, by turning on the cell circuitry, as described in detail below, it is implemented in substrate and thin film layers, such as substrate 44 and thin film structure 48. In one embodiment, the orifice layer 50 it comprises a photo-etchable epoxy resin, for example, an epoxy referred to as SU8, sold by Micro-Chem, Newton, MA. Exemplary techniques for making orifice layer 50 with SU8 or other polymers are described in detail in US Pat. No. 6,162,589, which is incorporated by reference. In one embodiment, the orifice layer 50 is formed of two separate layers referred to as a sweep layer (eg, a dry film, photo resistant barrier layer) and a metal orifice layer (e.g. nickel, copper, iron / nickel, palladium, gold or rhodium alloys) formed on the barrier layer. Other suitable materials, however, can be empconduced to form the orifice layer 50. Figure 3 is a diagram illustrating the drop generators 60 located along the ink feed slot 46 in a printhead mode given 40. The ink feed slot 46 includes ink feed slots on opposite sides 46a and 46b. The drop generators 60 are disposed along each of the opposite sides of the ink feed slot 46a and 46b. A total of n drop generators 60 is located along the ink feed slot 46, with drop generators located along the ink feed slot 46a, and drop generators 60 located along the side of the ink feed slot 46b. In one embodiment, n equal to 200 drop generators 60 located along the ink feed slot 46 and m equal to 100 drop generators 60 located along each of the opposite sides of the ink feed slot 46a and 46b. In other embodiments, any convenient number of drop generators 60 may be disposed along the ink feed slot 46. The ink feed slot 46 provides the ink to each of the n drop generators 60 arranged therein. length of the ink feed slot 46. Each of the n drop generators 60 includes an ignition resistor 52, a vaporization chamber 56 and an injector 34. Each of the n vaporization chambers 56 is fluidically connected to the ink feed slot 46 by at least one ink supply channel 54. The ignition resistors 52 of the drop generators 60 are energized in a controlled sequence to eject the fluid from the vaporization chambers 56 and by the injectors 34 for printing an image on the printing medium 36. Figure 4 is a diagram illustrating one embodiment of an emphichting ignition cell 70 in a printhead mode. at given 40. the ignition cell 70 includes an ignition resistor 52, a resistor passage switch 72, and a circuit memory 74. The ignition of the resistor 52 is part of a drop generator 60. The pass switch 72 and the memory of the circuit 74 are part of the circuitry that controls the application of the electric current through the ignition of the resistor 52. The ignition cell 70 is formed in the thin film structure 48 and on the substrate 44 In a modality, the ignition resistance 52 is a thin film resistor and the step switch 72 is a field effect transistor (FET). The ignition resistor 52 is electrically connected to a fire line 76 and the purge route of the source, of the step switch 72. The purge route of the source of the step switch 72 is also electrically connected to a reference line 78 that is connected to a reference voltage, such as ground. The gate of the pass switch 72 is electrically connected to the memory of the circuit 74 which controls the state of the pass switch 72 The memory of the circuit 74 is electrically connected to a data line 80 and allows lines 82. The data line 80 receives a data signal representing part of an image and allowing the lines 82 to receive signals capable of controlling the memory of the circuit 74. The memory of the circuit 74 stores a data bit when allowed by the signals. The logic level of the data stored in groups of bits (eg, on or off, driving or not driving) of the step switch 72. The allowed signals may include one or more selected signals and one or more direction signals. Line of fire 76 receives an energy signal comprising pulses of energy and provides a pulse of energy to turn on resistance 52. In one embodiment, energy pulses are provided by electronic controller 30 to have calculated initial times and times of duration to provide an appropriate amount of energy to heat and vaporize the fluid in the vaporization chamber 56 of a drop generator 60.

Fig. 5 is a schematic diagram illustrating an embodiment of an ink jet print head that turns on the series of cells, indicated at 100. The series of ignition cells 100 includes a plurality of ignition cells 70 arranged in n groups of fire of n 102a-102n. In one embodiment, the ignition cells 70 are arranged in six fire groups 102a-102n. In other embodiments, the ignition cells 70 can be arranged at any convenient number of fire groups 102a-102n, such as four or more fire groups 102a-102n. The ignition cells 70 in the series 100 are schematically arranged in rows of L and columns. The rows L of ignition cells 70 are electrically connected to allow lines 104 that receive allowed signals. Each row of ignition cells 70, referred to herein as a row subgroup or subgroup of ignition cells 70, is electrically connected to a set of the subset of allowable lines 106a-106L. The subgroup of allowed lines 106a-106L receive the subgroup of allowed signals SG1, SG2, ... SGL allowing the corresponding subgroup of power cells 70. The columns m are electrically connected to data lines 108a-108m which receive signals from data DI, D2 ... Dm, respectively. Each of the m columns includes ignition cells 70 in each of the n ignition groups 102a-102n and each column of ignition cells 70 referred to herein as a data line group or data group, is electrically connected to a of the data lines 108a-108m. In other words, each of the data lines 108a-108m is electrically connected to each of the ignition cells 70 in a column, including ignition cells 70 in each of the ignition groups 102a-102n. For example, the data line 108a is electrically connected to each of the ignition cells 70 in the far left column, including the lighting of cells 70 in each of the ignition groups 102a-102n. The data line 108b is electrically connected to each of the ignition cells 70 in the adjacent column etcetera, and even to the data line 108 ms which is electrically connected to each of the ignition cells 70 in the far right column, even the lighting of cells 70 in each of the ignition groups 102a-102n. In one embodiment, the series 100 is arranged in six ignition groups 102a-102n and each of the six ignition groups 102a-102n includes 13 subgroups and eight data line groups. In other embodiments, the series 100 may be arranged at any convenient number of ignition groups 102a-102n and at any convenient number of subgroups and groups of data lines. In any mode, the ignition groups 102a-102n are not limited to having the same number of subgroups and groups of data lines. In contrast, each of the ignition groups 102a-102n may have a different number of subgroups and / or groups of data lines compared to any other ignition group 102a-102n. In addition, each subgroup may have a different number of ignition cells 70 compared to any other subgroup, and each group of data lines may have a different number of ignition cells 70 compared to any other subgroup, and each group of data lines it can have a different number of power cells 70 compared to any other group of data lines. The ignition cells 70 in each of the ignition groups 102a-102n are electrically connected to one of the ignition lines HOa-llOn. In the ignition group 102a, each of the ignition cells 70 is electrically connected to the ignition line 110a which receives the ignition signal or the energy signal FIRE2 and so on, up to and including the ignition group 102n where each one of the ignition cells 70 is electrically connected to ignite the line 11On that receives the ignition signal or the FIREn energy signal. In addition, each of the ignition cells 70 in each of the ignition groups 102a-102n are electrically connected to a common reference line 112 that is connected to ground. In the operation, the subgroup of allowed signals SG1, SG2 ... The SGLs are provided in the subgroup of allowed lines 106a-106L to allow a subgroup of power cells 70. The allowed power cells 70 store data signals DI, D2 .. Dm provided in data lines 108a-108m. The data signals Di, D2 ... Dm are stored in memory circuits 74 of allowed ignition cells 70. Each of the stored data signals DI, D2 ... Dm establish the status of the step switch 72. one of the allowed ignition cells 70. the step switch 72 is set to conduct or not to conduct based on the values of the data of the stored signal. After the states of the step switches 72 are established, a signal of energy FIREl -FIREn is provided in the ignition line HOa-llOn corresponding to the ignition group 102a-102n which includes the selected subgroup of ignition cells 70. The FIREl-FIREn energy signal includes an energy pulse. The pulse of energy is provided in the selected ignition line HOa-llOn to energize the ignition resistors 52 in the ignition cells having the conduit passage switches 72. The energized ignition resistors 52 are heated and eject the ink on the printing means 36 for printing an image represented by the data signals DI, D2 ... Dm. The process of allowing a subgroup of ignition cells 70, storing data signals Di, D2 ... Dm in the allowed subgroup and supplying a FIREl-FIREn energy signal to energize the ignition resistors 52 in the allowed subgroup continues until the printing stops. In one embodiment, as a power signal FIREl-FIREn is provided to a selected ignition group 102a-102n, the allowed signals of the subgroup SG1, SG2 ... The SGLs are changed to another subgroup chosen and allowed in an ignition group different 102a-102n. The newly allowed subgroup stores data signals Di, D2 ... Dm provided in the data lines 108a-108m and a FIREl-FIREn energy signal is provided in one of the ignition lines HOa-llOn to energize the ignition resistors 52 in the firing cells 70 allowed. At any time, only a subgroup of ignition cells 70 is allowed by the subgroup of allowed signals SG1, SG2 ... SGL to store data signals Di, D2 ... Dm provided in data lines 108a-108m. In this regard, the data signals Di, D2 ... Dm in the data lines 108a-108m the data flags are timed or calculated by division. Also, only one subgroup in a selected ignition group 102a-102n includes the step switches 72 that are set to drive while a power signal FIREl-FIREn is provided to the selected ignition group 102a-102n. However, the FIREl-FIREn power signals provided to different ignition groups 102a-102n can and does superimpose. Fig. 6 is a block diagram illustrating one embodiment of a given print head arrangement 200. The given print head 200 includes six ignition groups 202a-202f, two ink feed slots 204 and 206, six ignition lines 208a-208f and allowable lines 210. The ignition lines 208a-208f correspond to the ignition groups 202a-202f, respectively. Permitted lines 210 provide subgroup of allowed signals SG1, SG2 ... SGL to turn on groups 202a-202f to select lines of allowed subgroups. The six ignition groups 202a-202f are disposed along ink supply slots 204 and 206. The ignition groups 202a and 202 are disposed along the ink feed slot 204, and ignition groups 202c and 202f are disposed along the ink feed slot 206. The ignition groups 202b and 202e are disposed along both ink supply slots 204 and 206. The ink supply slots 204 and 206 are located at parallel to each other and each ink feed slot 204 and 206 include a length extending along the direction y- of the given print head 200. In one embodiment, the ink feed slots. 204 and 206 provide the same ink color, such as black, yellow, magenta or cyan ink, for the drop generators 60 in ignition groups 202a-202f. In other embodiments, each of the ink feed slots 204 and 206 provide a different color ink for the drop generators 60. The power groups 202a-202f are divided into eight data line groups, indicated in D1- D8. Each data line group D1-D8 includes ignition cells 70 of each of the six ignition groups 202a-202f. Each of the ignition cells 70 in a data line group D1-D8 is electrically connected to each of the eight corresponding data lines 108a-108 (Figure 5). The data line group Di, indicated at 212a-212f, includes power cells 70 electrically connected to the data line 108a. The data line group D2 indicated at 214a-214f includes ignition cells 70 electrically connected to the data line 108b. Data line group D3, indicated at 216a-216f, includes power cells 70 electrically connected to data line 108c. The data line group D4, indicated at 218a-218f, includes power cells 70 electrically connected to the data line 108d. The data line group D5 indicated at 220a-220f includes ignition cells 70 electrically connected to the data line 108e. The data line group D6, indicated at 222a-222f, includes power cells 70 electrically connected to the data line 108f. The data line group D7, indicated at 224a-224f, includes ignition cells 70 electrically connected to data line 108g, and data line group D8 indicated at 226a-226f, includes ignition cells 70 electrically connected to the line of data 108h. Each of the ignition cells 70 in the given print head 200 is electrically connected to only one data line 108a-108h, and each data line 108a-108h is. electrically connected to all memory circuits 74 in the ignition cells 70 of the corresponding data line group D1-D8. The ignition group 1 (FGl) 202a is disposed along a first part of the ink feed slot 204. The ink feed slot 204 includes opposite sides of the ink feed slot 204a and 204b that extend along the direction y- of the given print head 200. The ignition cells 70 in the given print head 200 include ignition resistors 52 which are part of the drop generators 60. The drop generators 60 in FGl én 202a are disposed along each of the opposite sides 204a and 204b of the ink feed slot 204. The drop generators 60 in FGl at 202a are fluidically connected to the ink feed slot 204 to receive the ink from the ink. ink feed slot 204. The drop generators 60 in data line groups Dl-D6, indicated at 212a, 214a, 216a, 218a, 220a, and 222a in FGl at 202a are disposed along a side 204a of the feed slot of ink 204. The drop generators 60 in data line groups D7 and D8, indicated at 224a and 226a are arranged along the opposite side 204b of the ink feed slot 204. The drop generators 60 in groups of data line D1-D6 at 212a, 214a, 216a, 218a, 220a and 222a are disposed between a side 200a of the given print head 200 and the ink feed slot 204. Drop generators 60 in data line groups D7 and D8 at 224a and 226a are disposed along an inner channel of the given print head 200 between the ink feed slot 204 and the ink feed slot 206. In one embodiment, the drop generators 60 in groups of data line D1-D6 at 212a, 214a, 216a, 218a, 220a and 222a are located along the side 204a of the ink feed slot 204, such that the data line group DI at 212a is next to the data line group D2 at 214a, which is between the data line DI at 212a and the data line group D3 at 216a. Data line group D4 at 218a is between data line group D3 at 216a and data line group D5 at 220a. The data line group D6 at 222a is next to the data line group D5 at 220a. The drop generators 60 in the data line groups D7 and D8 at 224a and 226a are located along the opposite side 204b of the ink feed slot 204, such that the data line group Di at 212a faces this to the data line group of D7 at 224a and the data line group D2 at 214a is in front of the data line group of D8 at 226a. The ignition group 4 (FG4) 202 is disposed along a second part of the ink feed slot 204. The drop generators 60 at FG4 at 202 are arranged along each of the opposite sides 204a and 204b of the ink feed slot 204 and fluidically connected to the ink feed slot 204 to receive the ink from the ink feed slot 204. The drop generators 60 in the data line group D1-D6, indicated at 212d, 214d, 216d, 218d, 220d and 222d are disposed along one side 204a of the ink feed slot 204. The drop generators 60 in data line group D7 and D8, indicated at 224d and 226d, are disposed along the opposite side 204b of the ink feed slot 204. The drop generators 60 in data line groups D1-D6 at 212d, 214d, 216d, 218d, 220d and 222d are disposed between a 200A side of the given printhead 200 and the feed slot of ink 204. The drop generators 60 in data line groups D7 and D8 at 224d and 226d are arranged along an inner channel of the given print head 200 between the ink feed slot 204 and the feed slot Ink 206. In one embodiment, the drop generators 60 in data line groups D1-D6 at 212d, 214d, 216d, 218d, 220d and 222d are located along the side 204a of the ink feed slot 204 , such that the data line group DI at 212d is next to the data line group D2 at 214d, which is between the data line group DI at 212d and the data line group D3 at 216d. The data line group D4 at 218d is between the data line group D3 at 216d and the data line group D5 at 220d. The data line group D6 at 222d is next to the data line group D5 at 220d. The drop generators 60 in data line groups D7 and D8 at 224d and 226d are located along the opposite side 204b of the ink feed slot 204 such that the data line group D5 at 220d is opposite to the data line group D7 at 224d and data line group D6 at 222d is opposite to data line group D8 at 226d. The ignition group 3 (FG3) 202c is disposed along a first part of the ink feed slot 206. The ink feed slot 206 includes opposite sides of the ink feed slot 206a and 206b which extend along the direction y- of the given print head 200. The ignition cells 70 in the given print head 200 include ignition resistors 52 which are part of the drop generators 60. the drop generators 60 in FG3 in 202c are disposed along each of the opposite sides 206a and 206b of the ink feed slot 206. The drop generators 60 at FG3 at 202c are fluidly connected to the ink feed slot 206 to receive the ink from the ink. ink feed slot 206 Drop generators 60 in data line groups Dl-D6, indicated at 212c, 214c, 216c, 218c, 220c and 222c in FG3 in 202c are arranged along one side 206b of the slot power supply ink 206. The drop generators 60 in data line groups D7 and D8, indicated at 224c and 226c, are arranged along the opposite side 206a of the ink feed slot 206. The drop generators 60 in data line groups D1-D6 at 212c, 214c, 216c, 218c, 220c and 22c are disposed between a side 200b of the given print head 200 and the ink feed slot 206. The drop generators 60 in data line groups D7 and D8 at 224c and 226c are disposed along an inner channel of the given print head 200 between the ink feed slot 204 and the ink feed slot 206 In one embodiment, the drop generators 60 in data line groups D1-D6 at 212c, 214c, 216c, 218c, 220c and 222c are located along the side 206b of the ink feed slot 206, such that the data line group Di at 212c is next to the data line group D3 at 214c, which is between the data line DI at 212c and the data line group D3 at 216c. The data line group D4 at 218c 'is between data line group D3 at 216c and data line group D5 at 220c. The data line group D6 at 222c is next to the data line group D5 at 220c. The drop generators 60 in data line groups D7 and 08 at 224c and 226c are located along the opposite side 206a of the ink feed slot 206, such that the line group DI at 212c is opposite to the group of data line D7 at 224c and data line group D2 at 214c is opposite to data line group D8 at 226c.206 The ignition group 6 (FG6) 202f is disposed along a second part of the slot Ink feed 206. The drop generators 60 at FG6 at 202f are disposed along each of the opposite sides 206a and 206b of the ink feed slot 206 and fluidically connected to the ink feed slot 206 for receiving the ink from the ink feed slot 206. The drop generators 60 in the data line group D1-D6, indicated at 212f, 214f, 216f, 218f, 220f and 222f are arranged along the side 206b of the ink feed slot 206. The drop generators 6 0 in the data line group D7 and D8, indicated at 224f and 226f, are arranged along the opposite side 206a of the ink feed slot 206. The drop generators 60 in data line groups D1-D6 -in 212f, 214f, 216f, 218f, 220f and 222f are disposed between a side 200b of the given print head 200 and the ink feed slot 206. The drop generators 60 in data line groups D7 and D8 in 224f and 226f are disposed along an inner channel of the given print head 200 between the ink feed slot 204 and the ink feed slot 206. In one embodiment, the drop generators 60 in data line groups D1 -D6 at 212f, 214f, 216f, 218f, 220f and 222f are located along the side 206b of the ink feed slot 206, such that the data line group DI at 212f is next to the line group of data D2 at 214f, which is between the group of data line DI at 212f and the group of l D3 line data 216F. The data line group D4 at 218f is between the data line group D3 at 216f and the data line group D5 at 220f. The data line group D6 at 222f is next to the data line group D5 at 220f. The drop generators 60 in data line groups D7 and D8 at 224f and 226f are located along the opposite side 206a of the ink feed slot 206, such that the data line group D5 at 220f faces the data line group D7 in 224f and data line group D6 in 222f is in front of data line group D8 in 226f. The ignition group 2 (FG2) 202b is disposed along the first portions of the ink supply slots 204 and 206. The drop generators 60 at FG2 at 202b are disposed along the side 204b of the ink slot. ink feed 204 and side 206a of ink feed slot 206. Drop generators 60 in data line groups DI, D3, D5 and D7, indicated at 212b, 216b, 220b and 224b are arranged along the side 204b of the ink feed slot 204 and connected fuidically to the ink feed slot 204 to receive the ink from the slot ink feed 204. The drop generators 60 in data line groups D2, D4, D6 and D8, indicated at 214b, 218b, 222b and 226b are arranged along the side 206a of the ink feed slot 206 for receiving the ink from the ink feed slot 206. The drop generators 60 at FG2 at 202b are disposed between the ink feed slots 204 and 206. In one embodiment, the drop generators 60 in data line groups. Di, D3, D5 and D7 at 212b, 212b, 216b, 220b and 224b are located along the side 204b of the ink feed slot 204 and the drop generators 60 in data line groups D2, D4, D6 and D8 at 214b, 218b, 222b and 226b are located along side 206a of the ranu ink feed 206. The data line group DI at 212b in FG2 at 202b on the side 204b of the ink feed slot 204 is through or the data line group opposite D3 at 216a in FGl at 202a along side 204a. The data line group D3 in 216b in FG2 in 202b is opposite to the data line group in D4 in 218a in FGl in 202a. The data line group D5 at 220b in FG2 at 202b is opposite to the data line group D5 at 220a in FGl at 202a. The data line group D7 at 224b in FG2 at 202b is opposite to the data line group at D6 at 222a in FGl at 202a. Along the ink feed slot 206, the data line group D2 at 214b in FG2 at 202b is along the side 206a of the ink feed slot 206 and through the data line group or group 206a. opposite D3 at 216c on FG3 at 202c along side 206b. The data line group D4 at 218b in FG2 at 202b is opposite to the data line group D4 at 218c in FG3 at 202c. The data line group D6 at 222b at FG2 at 202b is opposite to the data line group D5 at 220c at FG3 at 202c, and the data line group D8 at 226b at FG2 at 202b is opposite to the line group at D6 data in 222c in FG3 in 202c.

The ignition group 5 (FG5) 202e is disposed along the second portions of the ink feed slots 204 and 206. The drop generators 60 at FG5 at 202e are disposed along the side 204b of the ink slot. ink feed 204 and side 206a of the ink feed slot 206. The drop generators 60 in data line groups DI, D3, D5 and D7, indicated at 212e, 216e, 220e and 224e are arranged along the side 204b of the ink feed slot 204 and fluidically connected to the ink feed slot 204 to receive the ink from the ink feed slot 204. The drop generators 60 in data line groups D2, D4, D6 and D8, indicated at 214e, 218e, 222e and 226e are arranged along the side 206a of the ink feed slot 206 to receive the ink from the ink feed slot 206. The drop generators 60 in FG5 at 202e are disposed between the feeding slots of t inta 204 and 206. In one embodiment, the drop generators 60 in data line groups D2, D3, D5 and D7 at 221e, 216e, 220e and 224e are located along the ink supply side 204b 204 and the drop generators 60 in data line groups D2, D4, D6 and D8 at 214e, 218e, 222e and 226e are located along the side 206a of the ink feed slot 206. The data line group Di in 212e at FG5 at 202e on the side 204b of the ink feed slot 204 is through or opposite the data line group 'Di at 212 in FG4 at 202 along the side 204a. The data line group D3 at 216e at FG5 at 202e is opposite to the data line group D2 at 214 at FG4 at 202. The data line group D5 at 220e at FG5 at 202e is opposite to the data line group D3 at 216 in FG4 at 202. The data line group D7 at 224e at FG5 at 202e is opposite to the data line group D4 at 218 at FG4 at 202d. Along the ink feed slot 206, the data line group D2 at 214e at FG5 at 202e is along the side 206a of the ink feed slot 206 and through or opposite the line feed group 206a. data DI in 212f in FG6 in 202f along side 206b. The data line group D4 at 218e in FG5 at 202e is opposite to the data line group D2 at 214f in FG6 at 202f. Data line group D6 at 222e at FG5 at 202e is opposite to data line group D3 at 216f at FG6 at 202f, and data line group D8 at 226e at FG5 at 202e is opposite to the data line group D4 at 218f in FG6 at 202f.

In one embodiment, the given print head 200 includes 672 drop generators 60. Each of the six ignition groups 202a-202f includes 112 drop generators 60. Each part of a data line group D1-D8 at 212,214,216,218,220,222,224 and 226 in an ignition group 202a-202f includes 14 drop generators 60, such that each ignition group 202a-2o2f includes 14 row subgroups connected to 8 data lines 108a-108. In other embodiments, the given print head 200 may include any convenient number of drop generators 60 such as 600 drop generators 60, arranged in any convenient model of drop generators per ignition group and the drop generators per data line group or part of a data line group. In addition, the given print head 200 may include any convenient number of ignition groups and any convenient number of data line groups. The conductive ignition lines 208a-208f are electrically connected to the ignition of the resistor 52 in drop generators 60 in ignition groups 202a-202f. The ignition line 208a is electrically connected to each ignition resistance 52 at FG1 at 202a. The ignition line 208a is disposed between a side 200a of the given print head 200 and the ink feed slot 204 and between the ink feed slots 204 and 206. The ignition line 208a is connected to a termination 204c of the ink feed slot 204 to form a substantially J-shaped or substantially U-shaped fire line. The part of the fire line 208a disposed between side 200a and ink feed slot 204 is electrically connected to resistor firing 52 in data line groups Dl-D6 at 212a, 214a, 216a, 218a, 220a and 222a. The part of the fire line 208a arranged between ink food slot 204 and ink food slot 206 is electrically connected to resistor firing 52 in data line groups D7 and D8 at 224a and 226a. The fire line 208a receives and supplies the energy signal FIRE1 including pulses of energy to the ignition of the resistor 52 at FG1 at 202a. The ignition line 208d is electrically connected to each ignition resistance 52 at FG4 at 202d. the ignition line 208d is disposed between a side 200a of the given print head 200 and the ink feed slot 204 and between the ink feed slots 204 and 206. The ignition line 208d is connected to an end 204d of the ink feed slot 204 to form a substantially J-shaped or substantially U-shaped partial ignition line, the part of the fire-fired line 208d disposed between the side 200a and the ink feed slot 204 is electrically connected to the ignition of resistors 52 in data line groups D1-D6 at 212d, 214d, 216d, 218d, 220d and 222d. The part of the ignition line 208d disposed between the ink feed slot 206 and the ink feed slot 206 is electrically connected to the ignition of resistors 52 in data line groups D7 and D8 at 224d and 226d. The ignition line 208d receives and supplies the energy signal FIRE4 including pulses of energy for ignition of resistors 52 in FG4 in 202d. The ignition line 208c is electrically connected to each ignition resistance 52 at FG3 at 202c. the ignition line 208c is disposed between a side 200b of the given print head 200 and the ink feed slot 206 and between the ink supply slots 204 and 206. The ignition line 208c is connected to an end 206c of the ink feed slot 206 to form a substantially J-shaped or partial substantially U-shaped ignition line, the part of the ignition line 208c disposed between the side 200b and the ink feed slot 206 is electrically connected to the ignition of resistors 52 in data line groups D1-D6 at 212c, 214c, 216c, 218c, 220c and 222c. The part of the ignition line 208c disposed between the ink feed slot 204 and the ink feed slot 206 is electrically connected to the ignition of resistors 52 in data line groups D7 and D8 at 224c and 226c. The ignition line 208c receives and supplies the energy signal FIRE3 including pulses of energy for ignition of resistors 52 at FG3 at 202c. The ignition line 208f is electrically connected to each ignition resistance 52 at FG6 at 202f. the ignition line 208f is disposed between a side 200b of the given print head 200 and the ink feed slot 206 and between the ink feed slots 204 and 206. The ignition line 208f is connected to an end 206d of the ink feed slot 206 to form a substantially J-shaped or partially U-shaped ignition line, the part of the ignition line 208f disposed between the side 200b and the ink feed slot 206 is electrically connected to the ignition of resistors 52 in data line groups D1-D6 at 212f, 214f, 216f, 218f, 220f and 222f. The part of the ignition line 208f disposed between the side 200b the ink feed slot 206 and the ink feed slot 206 is electrically connected to the ignition of resistors 52 in data line groups D7 and D8 at 224f and 226f. The ignition line 208f receives and supplies the 'FIRE6 energy signal including power pulses for ignition of resistors 52 at FG6 at 202f. The ignition line 208b is electrically connected to each ignition resistance 52 at FG2 at 202b. The ignition line 208b is disposed between the ink supply slots 204 and 206. An ignition line section 230b is located through ignition cells 70 in DI data line groups., D3, D5 and D7 at 212b, 216b, 220b and 224b next to the ink feed slot 204 and another ignition line section 232b are located through the ignition cells 70 in data line groups D2 , D4, D6 and D8 at 214b, 218b, 222b and 226b next to the ink feed slot 206. Sections 230 and 232 are electrically connected together at 234 between the ink feed slots 204 and 206 and a third section or the pole section 236 of the ignition line 208b is electrically connected to the first and second sections 230 and 232 and extends to the side 200c of the given print head 200. The ignition line 208b receives and supplies the FIRE2 energy signal including pulses of energy to the ignition resistors 52 in FG2 in 202b. The ignition line 208b is electrically connected to each ignition resistance 52 at FG5 at 202e. The ignition line 208e is disposed between the ink supply slots 204 and 206. An ignition line section 240b is located through ignition cells 70 in data line groups Di, D3, D5 and D7 at 212e. , 216e, 220e and 224e next to the ink feed slot 204 and another ignition line section 242e are located through the ignition cells 70 in data line groups D2, D4, D6 and D8 in 214e , 218e, 222e and 226e next to the ink feed slot 206. The sections 240 and 242 are electrically connected together at 244 between the ink feed slots 204 and 206 and a third section or the pole section 246 of the line Ignition 208e is electrically connected to the first and second sections 240 and 242 and extends to the 200d side of the given print head 200. The ignition line 208e receives and supplies the FIRE5 energy signal including pulses of energy to the Ignition resistors 52 in FG5 in 202e. The allowable lines 210 are electrically connected to the ignition cells 70 in row subgroups in ignition groups 202a-202f. Allowed lines 210 are electrically connected to ignition cells 70 in row subgroups as previously described by allowable lines 106a-106L. Permitted lines 210 receive a subset of allowed signals SG1, SG2 ... SGL and provide the received signals to ignition cells 70 in row subgroups. The subgroup of allowed signals SG1, SG2 ... SGL a permitted row subgroup of power cells 70 for receiving and storing data signals D1-D8 provided in data lines 108a-108h. Allowed lines 210 210 are located between the ink feed slot 204 and the side 200a of the given print head and between the ink feed slot 206 and the side 200b of the given print head. In addition, the allowable lines 210 are drawn between the ink supply slots 204 and 206. The allowed lines 210 extend along a side 200c of the given printhead 200. In one embodiment, some of the allowable lines 210 are divided into two groups of allowed lines. One group provides allowable signals for the ignition groups 202a-202c and another group provides allowable signals for the ignition groups 202d-202f. Figure 7 is a block diagram illustrating one embodiment of a reference conductor arrangement 250 in the given print head 200. The given print head 200 includes the six ignition groups 202a-202f, two ink feed slots 204 and 206 and a reference conductor 250. The reference conductor 250 is electrically connected - to each of the ignition cells 70 in each of the ignition groups 202a-202f. The path of the purge source of each step switch 72 in each of the ignition cells 70 is electrically connected to the reference conductor 250. In addition, the reference conductor 250 is electrically connected to a reference voltage, just like the earth. In one embodiment, the reference conductor 250 is connected by external contacts to the external circuitry or ground paths. (See, Figure 15).

The ignition groups 202a-202f are disposed along the ink supply slots 204 and 206. The ignition groups 202a and 202d are located along the ink feed slot 204, and the ignition groups 202c. and 202f are located along the ink feed slot 206. The ignition groups 202b and 202e are located both along both ink supply slots 204 and 206. The ignition groups 202a-202f are divided into eight. data line groups D1-D8, indicated at 212, 214, 216, 218, 220, 222, 224 and 226. Each group of data line Dl-D8 at 212, 214, 216, 218, 220, 222, 224 and 226 includes ignition cells 70 of each fire group 202a-202t. Each ignition cell 70 in a data line group D1-D8 at 212, 214, 216, 218, 220, 222, 224 and 226 is electrically connected to the corresponding one of eight data lines 108a-108h. The ignition groups 202a-202f and the data line groups D1-D8 at 212, 214, 216, 218, 220, 222, 224 and 226 are disposed along the ink feed slots 204 and 206 as previously It was described in detail here. The ink feed slots 204 and 206 are spaced apart and parallel to one another. Each ink feed slot 204 and 206 includes a length extending along the direction y- of the given print head 200. The ink feed slot 204 includes opposed sides 204a and 204b along the ink slot. ink feed 204, and ink feed slot 206 includes opposite sides 206a and 206b along the ink feed slot 206. Ink feed slots 204 and 206 supply ink for drop generators 60 in groups of ignition 202a-202f. The reference conductor 250 includes a first part 250a, a second part 250b, a third part 250c and a fourth part 250d electrically connected together at each end of the ink supply slots 204 and 206. The reference conductor 250 is arranged to along each of the opposite sides 204a and 204b of the ink feed slot 204 ,. and along each of the opposite sides 206a and 206b of the ink feed slot 206. The portions 250a-250d are electrically connected together along the side 200c of the given print head 200 and along the side 200d of the given print head 200. The first part 250a of the reference conductor 250 is located through each ignition cell 70 in data line groups D1-D6 at 212a, 214a, 216a, 218a, 220a and 222a in FGl at 202a . The first part 250a of the reference conductor 250 is also located through each ignition cell 70 in data line groups D1-D6 at 212d, 214d, 216d, 218d, 220d and 222d at FG4 at 202. The first part 250a is positioned along the side 204a of the groove. ink feed 204 and between the ink feed slot 204 and side 200a of the given print head 200. The second part 250b of the reference conductor 250 is placed through each ignition cell 70 in data line groups D7 and D8 at 224a and 226a at FGl at 202a, data line groups DI, D3, D5 and D7 at 212b, 216b, 220b and 224b at FG2 at 202b, data line groups DI, D3, D5 and D7 at 212e, 216e, 220e and 224e in FG5 in 202e and data line groups D7 and D8 in 224 and 226 in FG4 in 202. The second part 250b is located along the side 204b of the ink feed slot 204 and between ink supply slots 204 and 206. The third part 250c of the reference conductor 250 is located through each ignition cell 70 in data line groups D7 and D8 at 224c and 226c in FG3 at 202c, line groups of data D2, D4, D6 and D8 in 214b, 218b, 222b and 226b in FG2 in 202b, data line groups D2, D4, D6 and D8 in 214e, 218e, 222e and 226e in FG5 in 202e and data line groups D7 and D8 in 224f and 226f in FG6 in 202f. The third part 250c is located along the side 206a of the ink feed slot 206 and between the ink supply slots 204 and 206. The fourth part 250d of the reference conductor 250 is placed through each ignition cell. 70 in data line groups D1-D6 in 212c, 214c, 216c, 218c, 220c and 222c in FG3 in 202c and data line groups D1-D6 in 212f, 214f, 216f, 218f, 220f and 222f in FG6 in 202f. The fourth part 250d is located along the side 206b of the ink feed slot 206 and between the ink feed slots 206 and side 200b of the given print head 200. The parts 250a-250 of the reference conductor 250 are electrically connected together along the sides 200c and 200 of the given print head 200. Figure 8 is a plan view diagram illustrating a mode of a section 300 taken in the first metal layer of the given print head 200, depicting regions that overlap and do not overlap multiple layers. The present structures described can be formed in one or several layers. Section 300 includes three ignition cells, indicated at 302a-302c, ink feed slot 206 and reference conductor 250. The three ignition cells 302a-302c are similar to ignition cells 70 throughout the print head given 200 and cases of power cells 70 that are part of data line group D7 at 224c in FG3 at 202c. The ignition cells 302a-302c include the memory circuits 74a ~ 74c, pass switches 72a-72c and ignition resistors, indicated at 52a-52c. The ignition cell 302a includes the memory circuit 74a, step switch 72a and ignition resistance 52a. The ignition resistance 52a includes a first resistive segment 304a, a second resistive segment 306a and a short conductive rod 308a. The first resistive segment 304a and the second resistive segment 306a are electrically separated resistive segments connected together by the short conductive rod 308a. The memory circuit 74a is electrically connected to the gate of the pass switch 72a by a conductive substrate 310a. One side of the purge source path of the step switch 72a is electrically connected to the reference conductor 250. The reference conductor 250 contacts the step switch 72a where the reference conductor 250 is disposed above, eg in a layer on top, at least a part of the switch 72a. The other side of the purge source path of the pass switch 72a is electrically connected to the conductive lead of the pass switch 312a which electrically connects the purge source path of the pass switch 72a to the first resistive segment 304a. The second resistive segment 306a is electrically connected to the ignition line 208c by the conductive conductive ignition line 314a. The ignition cells 302b include the memory circuit 74b, step switch 72b and ignition resistance 52b. The ignition resistance 52b includes a first resistive segment 304b, a second resistive segment 306b and a conductive short bar 308b. The first resistive segment 304b and the second resistive segment 306b are electrically isolated resistive segments connected together by the conductive short bar 308b. The memory circuit 74b is electrically connected to the gate of the pass switch 72b by a conductive substrate 310b.

One side of the purge source path of the step switch 72b is electrically connected to the reference conductor 250. The reference conductor 250 contacts with the step switch 72b where the reference conductor 250 is disposed on a part of the circuit breaker. pass 72b. The other side of the purge source path of the pass switch 72b is electrically connected to the lead of the pass switch 312b which electrically connects the purge source path of the pass switch 72b to the first resistive segment 304b. The second resistive segment 306b is electrically connected to ignite the line 208c by the conductor conductive ignition line 314b. The ignition cell 302c includes the memory circuit 74c, pass switch 72c and the ignition resistance 52c. The ignition resistance 52c includes a first resistive segment 304c, a second resistive segment 306c and a conductive short bar 308c. The first resistive segment 304c and the second resistive segment 306c are electrically separated resistive segments connected together by the short bar 308c. The memory circuit 74c is electrically connected to the gate of the pass switch 72c by a conductive substrate 310c. The purge source path of the pass switch 72c is electrically connected to the reference conductor 250. The reference conductor 250 contacts the pass switch 72c where the reference conductor 250 is disposed on a part of the pass switch 72c. The other side of the purge source path of the pass switch 72c is electrically connected to the pass switch 312bc by conductive conductor which electrically connects the purge source path of the pass switch 72c to the first resistive segment 304c. The second resistive segment 306c is electrically connected to ignite the line 208c by the conductor conductive ignition line 314c. The ignition cells 302a-302c are formed in and on the semiconductor substrate 320 of the given printhead 200. The memory circuits 74a-74c, pass switches 72a-72c and conductive substrate 310a-310c are formed in the substrate 320 of the given print head 200. The reference conductor 250, the conductive conductors of the pass switch 312a-312c, the conductive co-conductors of the ignition line 314a-314c and the short rods 308a-308c are formed as part of the first metallic layer which is formed in the substrate 320. In addition, the first resistive segments 304a-304c and the second resistive segments 306a-306c are formed as part of a resistive layer. In other embodiments, portions of the reference conductor 250 can be formed in both the first metal layer and the second metal layer (not shown). The ink feed slot 206 is formed in the substrate 320 and provides the ink to the ignition resistors 52a-52c. The ink feed slot 206 includes an ink feed slot edge 322 on the substrate surface 320. The ink feed slot edge 322 is in communication with the surface of the substrate 320 along the feed slot of ink 206. The reference conductor 250, at 324 is disposed along the ink feed slot 206 and spaced, apart from the ink feed slot edge 322. The opposite side 206a of the ink feed slot 206 includes the ink feed slot edge 322 and the opposite side 206b of the ink feed slot 206 includes an ink feed slot edge similar to the ink feed slot edge 322. In addition, each of the opposite sides 204a and 204b of the ink feed slot 204 includes an ink feed slot edge in communication with the surface of the substrate 320 and similar to the edge of the ink. ink feed slot 322. The reference conductor parts 250 are formed in the first metal layer, other parts may or may not be formed in the second metal layer, and disposed between the memory circuits 74a-74c and the ink feed slot 206. The conductive conductor step switch 312a-312c, the driver ignition line conductive 314a-314c and ignition resistors 52a-52c are isolated from the reference conductor 250 and disposed in the ignition of resistor areas 326a-326c. The ignition of the resistance area 326a includes the conductive conductor passage switch 312a, the conductive conductor ignition line 314a and the ignition resistance 52a. the resistance of the ignition area 326b includes the conductive conductor passage switch 312b, the conductive conductor ignition line 314b and the ignition resistance 52b. The ignition of the area resistor 326c includes the conductive conductor passage switch 312c, the conductive conductor line 314c and the ignition resistance 52c.

The reference conductor 250 is disposed on a portion of each of the pass switches 72a-72c between the memory circuits 74a-74c and the ignition area resistances 326a-326c, including the conductive lead-through switch 312a- 312c. The reference conductor 250 is also disposed between the ink supply slot edge 322 and the ignition area resistance 326a-326c, including the ignition resistors 52a-52c. In addition, the reference conductor 250 is disposed between the ignition area resistor 326a-326c of adjacent ignition cells 302a-302c. The reference conductor 250 is substantially planar between the memory circuits 74a-74c and the ink feed slot edge 322. The reference conductor 250 has a larger or increased area due to the part of the reference conductor 250 which is disposed between the ink feed slot edge 322 and the ignition area resistance 326a-326c. The larger area of the reference conductor 250 reduces the energy variation between the firing of cells 70 and provides a more uniform ink pattern. In the embodiment described above, the reference conductor 250 is disposed between the ink supply slot edge 322 and the ignition area resistors 326a-326c and is also disposed between and substantially planar with the ignition area resistances 326a- 326c the adjacent ignition cells 302a-302c. In this embodiment, the reference conductor 250 is substantially planar with ignition resistors 52a-52c, but not the ink feed slot edge. In one embodiment, the ink feed slot edge is also planar with the reference conductor 250. In one embodiment, the ignition resistors 52a-52c are not substantially planar with the reference conductor 250. However, in all these In the embodiments, the reference conductor is disposed between the ink supply slot edge and the ignition resistors and is also disposed between the resistors of adjacent ignition cell areas without taking into account flat relations. In operation, one of the ignition cells 302a-302c is turned on or activated at the same time. In an exemplary operation, the memory circuit 74a provides a voltage level at the gate of the pass switch 72a to turn the pass switch 72a on or off. The ignition line 208c receives the energy signal FIRE3 and provides a pulse of energy to the second resistive segment 306a by the conductive line ignition line 314a. If the step switch 72a conducts, the energy pulse provides a current through the ignition resistor 52a, the conductive conductor passage switch 312a and the step switch 72a for the reference conductor 250. With the reference conductor elk 250 electrically connected to a reference voltage, such as ground, the flows of currents through the reference conductor 250 to ground. As the current flows through the reference conductor 250, the current flows between the memory circuits 74a-74c and the ignition area resistors 326a-326c, including the conductive pass switch 312a-312c. The current also flows between the adjacent ignition area resistors 326a-326c and between the ink supply slot edge 322 and the ignition area resistors 326a-326c, including the ignition resistors 52a-52c. The arrangement of ignition cells 302a-302c in section 300 is similar to the arrangement of ignition cells 70 along ink supply slots 204 and 206 throughout the given print head 200. In addition, the arrangement of the reference conductor 250 in the section 300 is similar to the arrangement of the reference conductor 250 along the opposite sides 204a and 204b of the ink feed slot 204 and along the opposite sides 206a and 206b of the slot ink feed 206 throughout the given print head 200. Figures 9A and 9B are diagrams illustrating partial cross sections of a given print head embodiment 200 taken at the positions of lines 9A and 9B, respectively, in Figure 8. Figures 9A and 9B are not drawn to scale for clarity. With respect to Figures 9A and 9B, the given printhead 200 includes an orifice layer 400, a first metal layer 402, a second metallic layer 404, an insulating layer 406 and substrate 320. The through switch 72a and the slot Ink feed 206 are formed in the substrate 320 which includes a substrate surface 320a. The ink feed slot 206 includes the edge of the ink feed slot 322 in communication with the surface of the substrate 320a. The first metallic layer 402 is formed on the surface of the substrate 320a. The insulation layer 406 is formed in the first metallic layer 402 and the surface of the substrate 320a. The orifice layer 400 has a front face 400a and an opening injector 412 on the front face 400a. The orifice layer 400 also has an injector chamber or vaporization chamber 414 and a fluid path or ink supply path 416 formed therein. The ignition resistance, indicated at 52a, is located at least partially under the vaporization chamber 414, which is between the ignition resistance 52a and the opening injector 412. the ink supply path 416 is located between the vaporization chamber 414 and the ink feed channel 410. The vaporization chamber 414 communicates with the opening injector 412 and the ink feed path 416. the ink feed path 416 communicates with the vaporization chamber 414 and the channel ink feed 410 communicating with the ink feed slot 206. Ink feed slot 206 provides ink to the vaporization chamber 414 through the ink feed channel 410 and the ink feed path 416. The first metallic layer 402 is formed on the substrate 320 and isolated from the second metallic layer 404 by the insulating layer 406. The first metallic layer 402 includes an ac conductive layer 418 and resistive layer 420. Conductive layer 418 is made of an appropriate conductive material, for example copper-aluminum, and resistive layer 420 is made of an appropriate resistive material, for example tantalum-aluminum. The first metallic layer 402 includes multiple conductors and the components in the given print head 200, including the reference conductor 250, the conductive conductor passage switch 312a, a conductive conductor ignition line 314a and the ignition resistance 52a. The ignition resistance 52a is made of the first metal layer 402 and includes the second resistive segment 306a and the short bar 308a. The second resistive segment 306a includes the resistive layer 420. The conductive layer 418 is not disposed in the second resistive segment 306a. The short bar 308a includes the conductive layer 418 and the resistive layer 420. The second resistive segment 306a is electrically connected to the short bar 308a and the conductive lead ignition line 314a. The conductive conductor ignition line 314a is made of the first metal layer 402 and includes the conductive layer 418 and the resistive layer 420. The conductive conductor ignition line 314a is electrically connected to the second metal layer 404 via track 422 formed in the insulating layer 406. The track 422 in the insulating layer 406 is filled with the material for electrically connecting the conductive conductor ignition line 314a to the second metallic layer 404. The reference conductor 250 is arranged on the substrate 320 on a part of the pass switch 72a and between the ignition resistance 52a and the edge of the ink feed slot 322. The reference conductor 250 is electrically connected to one side of the purge source path of the pass switch 72a. The other side of the purge source path of the pass switch 72a is electrically connected to the conductive lead passage switch 312a which is electrically connected to the first resistive segment 304a (shown in Figure 9B) of the ignition resistance 52a . The reference conductor 250 and the conductive lead passage switch 312a are formed as part of the first metal layer 402 and include the conductive layer 418 and the resistive layer 420. In an embodiment, the insulation layer 406 comprises an insulating and passivating layer disposed on the first metallic layer 402, including the reference conductor 250 and the ignition resistance 52a. The insulation layer 406 is disposed along the edge of the ink feed slot 322. The insulation layer 406 covers the reference conductor 250 between the ignition resistance 52a and the edge of the ink feed slot 322 and it prevents the ink from touching and corroding the reference conductor 250. In one embodiment, the insulation layer 406 is disposed on the short bar 308a and the second resistive segment 306a and prevents the ink from touching and corroding the short bar 308a and the second resistive segment 306a. In one embodiment, the insulation layer 406 is disposed over the conductive conductor ignition line 314a, the conductive conductor passage switch 312a and the reference conductor portion 250 disposed over the passage switch 72a. The track 422 is etched into the insulating layer 406 to electrically connect the conductive conductor ignition line 314a (first metallic layer 402) and the second metallic layer 404. The insulating layer 406 is formed as part of a material of convenient insulation. In one embodiment, the insulation layer 406 includes two layers, for example a layer of silicon carbide and a layer of silicon nitride. The second metal layer 404 includes the ignition line 208c which is electrically connected via track 422 for conductive line ignition line 314a. The second metallic layer 404 includes a first layer 424, made of a suitable material, for example tantalum, and a second layer 426 made of a suitable conductive material, for example gold. The first layer 424 is arranged to come into contact with the conductive conductor ignition line 314a via the way 422. In addition, the first layer 424 is disposed at 428 in the insulation layer 406 on the second resistive segment 306a. The first layer 424 at 428 protects the insulation layer 406 when the ink is heated by lighting the resistance 52a. The second layer 426 is a conductive gold layer disposed in the first layer 424 to form the ignition line 208c. The ignition line 208c receives the energy signal FIRE3 and provides power pulses to the second resistive segment 306a and the ignition resistance 52a to heat and eject the ink from the vaporization chamber 414 by the injector 412.

With respect to Figure 98, the ignition resistance 52a is made of the first metal layer 402 and includes the first resistive segment 304a and the short bar 308a. The first resistive segment 304a includes the resistive layer 420. The conductive layer 418 is not disposed in the first resistive segment 304a. The first resistive segment 304a is electrically connected to the short bar 308a and the conductive conductor passage switch 312a. In one embodiment, the insulation layer 406 is disposed on short bar 308a and the first resistive segment 304a. In one embodiment, the insulation layer 406 is disposed over the conductive conductor passage switch 312a and a portion of the reference conductor 250 disposed over the passage switch 72a. The first layer 424 of the second metal layer 404 is disposed at 428 in the insulation layer 406 on the first resistive segment 304a. The first layer 424 at 428 protects the insulation layer 406 when the ink is heated when the resistor 52a is turned on. In operation, the memory circuit 74a is allowed and receives data to turn the on / off switch 72a on. The memory circuit 74a provides a voltage at the gate of the pass switch 72a to turn the pass switch 72a on (driving) or off (no driving). A pulse of energy is received in the ignition line 208c and provided to the second resistive segment 306a. If the step switch 72a is on (conduction), the energy pulse creates a current of energy flowing through the ignition line 208c and the conductive lead ignition line 314a to the second resistive segment 306a. The flows of the currents by the second resistive segment 306a and short bar 308a to the first resistive segment 304a and the conductive conductor step switch. The current flows along the path of the purge source which leads the step switch 72a for the reference conductor 250 and the given print head 200. Like the current flows for the reference conductor 250, the current flows between the ignition area resistances 326a-326c and the reference conductor portion 250 between the ignition resistors 52a and the edge of the ink feed slot 322 In the embodiment shown in Figures 9A and 9B, the conductive layer 418 has a height that is in a range of 0.3-1.5um, which in an exemplary embodiment is 0.5 um, and resistive layer 420 is in a range of 0.3-1.5um, which in an exemplary embodiment is 0.5 um. In this embodiment, the first layer 424 has a height that is in a range of 0.3-1.5um, which in an exemplary embodiment is 0.36um, and the second layer 426 that has a height similar to that of the resistive layer 420. mode of ignition line position, and ground lines, direction of lines in metallic layer 1 and metallic layer 2 is shown and disclosed in co-pending patent application No. 10 / 787,573 which is incorporated by reference in its entirety Figure 10 is a diagram illustrating an embodiment of the section 300 of the given print head 200 at the position of line 10 in Figure 9B. The given print head 200 includes the ink feed slot 206, the path of the ink supply paths or fluids 416a-416c and the vaporization chambers, indicated at 414a-414c. The ink feed paths 416a-416c and the vaporization chambers 414a-414c correspond to the ignition cells 302a-302c. The ink feed path 416a and the vaporization chamber 414a correspond to the ignition cell 302a. the ink feed path 416b and the vaporization chamber 414b correspond to the ignition cell 302b, and the ink supply path 416c and the vaporization chamber 414c correspond to the ignition cell 302c. Vaporization chambers 414a-414c include first layer 424 at 428a-428c on first resistive segments 304a-304c and second resistive segments 306a-306c. The vaporization chamber 414a includes the first layer 424 at 428a on the first resistive segment 304a and the second resistive segment 306a. The vaporization chamber 414b includes the first layer 424 at 428b on the first resistive segment 304b and the second resistive segment 306b. The vaporization chamber 414c includes the first layer 424 at 428c on the first resistive segment 304c and the second resistive segment 306c. The reference conductor 250 is located on each side of the ignition area resistor 326a-326c. The reference conductor 250 is located een the resistor ignition of areas 326a-326c and a memory circuit and an area routing channel, indicated at 430. The reference conductor 250 is also located between ignition of resistors of adjacent areas 326a-326c. Further, the reference conductor 250 is disposed under the ink supply paths 416a-416c and between the ignition of area resistors 326a-326c and the edge of the ink feed slot 322. The reference conductor 250 at 324 is located next to the edge of the ink feed slot 322 along the ink feed slot 206. The ink feed slot 206 is fluidically connected to ink feed paths 416a-416c, which are fluidically connected to vaporization chambers 414a-414c, respectively. The reference conductor 250 is isolated by the insulating layer 406 of the ink flowing from the ink feed slot 206 via ink feed paths 416a-416c. The ink in the ink feed slot 206 flows through the ink feed paths 416a-416c to vaporization chambers 414a-414c on the insulating layer 406 that covers the reference conductor 250. FIG. 11 is a block diagram that illustrates an arrangement of ignition lines 208a-208f in a given print head mode 200. The given print head 200 includes ignition lines 208a-208f, data lines 108a-108 and ink feed slots 204 and 206. Each one of the ignition lines 208a-208f correspond to one of the fire groups 202a-202f and is electrically connected to all the ignition resistors 52 in the corresponding ignition group 202a-202f. Each of the data lines 108a-108h corresponds to one of the data line groups 212, 214, 216, 218, 220, 222, 224 and 226 and is electrically connected to all the ignition cells 70 the corresponding group of data line 212, 214, 216, 218, 220, 222, 224 and 226. Each of the data lines 108a-108 is electrically connected to the ignition cells 70 in each of the ignition groups 202a-202f. The data lines 108a-108 receive data signals D1-D8 and supply the data signals D1-D8 to the ignition cells 70 in each of the ignition groups 202a-202f. The data line 108a receives the data signal DI and supplies the data signal DI to the data line group 212 in each of the ignition groups 202a-202f. The data line 108b receives the data signal D2 and supplies the data signal D2 to the data line group 214 in each of the ignition groups 202a-202f. The data line 108c receives the data signal D3 and supplies the data signal D3 to the data line group 216 in each of the ignition groups 202a-202f. The data line 108d receives the data signal D4 and supplies the data signal D4 to the data line group 218 in each of the ignition groups 202a-202f. The data line 108e receives the data signal D5 and supplies the data signal D5 to the data line group 220 in each of the ignition groups 202a-202f. The data line 108f receives the data signal D6 and supplies the data signal D6 to the data line group 222 in each of the ignition groups 202a-202f. The data line 108g receives the data signal D7 and supplies the data signal D7 to the data line group 224 in each of the ignition groups 202a-202f. The data line 108 receives the data signal D8 and supplies the data signal D8 to the data line group 226 in each of the ignition groups 202a-202f. The data lines 108a-108 are disposed along the ink feed slots 204 and 206 in the given print head 200. The data line portions 108a-108f are disposed along the ink feed slot. 204 and between the ink feed slot 204 and the side 200a of the given print head 200a. Other parts of data lines 108a-108f are disposed along the ink feed slot 206 and between the ink feed slot 206 and the side 200b of the given print head. As well, the data line portions 108a, 108c, 108e, 108g, and 108h are disposed along the ink feed slot 204, between the ink feed slot 204 and the ink feed slot 206 and the ink portions. data lines 108b, 108, 108f, 108g and 108h are disposed along the ink feed slot 206, between the ink feed slots 206 and 204. The data line portions 108a-108f disposed between the slot ink supply 204 and the side 200a of the given print head are electrically connected to the ignition cells 70 in groups of data lines 212a, 214a, 216a, 218a, 220a and 222a in FGl in 202a, and to the ignition of cells 70 in data line groups 212d, 214d, 216d, 218d, 220d and 222d in FG4 in 202. The data line 108a is electrically connected to the switch-on of cells 70 in data line groups 212a and 212d. The data line 108b is electrically connected to the ignition of cells 70 in data line groups 214a and 214d. The data line 108c is electrically connected to the ignition of cells 70 in data line groups 216a and 216. The data line 108 is electrically connected to the ignition of cells 70 in data line groups 218a and 218d. The data line 108e is electrically connected to the ignition of cells in data line groups 220a and 220d. The data line 108f is electrically connected to the ignition of cells 70 in data line groups 222a and 222d The data line portions 108-108f disposed between the ink feed slot 206 and the side 200b of the given print head 200b they are electrically connected to the ignition of cells 70 in data line groups 212c, 214c, 216c, 218c, 220c and 222c in FG 3 in 202c and to the firing of cells 70 in data line groups 212f, 214f, 216f, 218f, 220f and 222f in FG6 in 202f. The data line 108a is electrically connected to the ignition of cells 70 in data line groups 212c and 212f. The data line 108b is electrically connected to the ignition of cells 70 in groups of data lines 214c and 214f. The data line 108c is electrically connected to the switch-on of cells in data line groups 216c and 216f. The data line 108 is electrically connected to the ignition of cells 70 in data line groups 218c and 218f. The data line 108e is electrically connected to the ignition of cells 70 in data line groups 220c and 220f. The data line 108f is electrically connected to the firing of cells 70 in data line groups 222c and 222f.

The data line portions 108a, 108c, 108e, 108g and 108h disposed along the ink feed slot 204, between the ink feed slot 204 and the ink feed slot 206, are electrically connected to the Ignition cells 70 in FGl in 202a, FG2 in 202b, FG4 in 202d and FG5 in 202e. The data line 108a is electrically connected to the ignition cells in data line groups 212b and 212e. The data line 108c is electrically connected to the ignition cells 70 in data line groups 216b and 216e. The data line 108e is electrically connected to the ignition cells 70 in data line groups 220b and 220e. The data line 108g is electrically connected to the ignition cells 70 in data line groups 224a, 224b, 224d and 224e. The data line 108 is electrically connected to the ignition cells 70 in data line groups 226a and 226d. The data line portions 108b, 108, 108f, 108g and 108h disposed along the ink feed slot 206 and between the ink feed slot 206 and the ink feed slot 204 are electrically connected to the ink cells. lit 70 in FG2 in 202b, FG3 in 202c, FG5 in 202e and FG6 in 202f. The data line 108b is electrically connected to the ignition cells 70 in data line groups 214b and 214e. The data line 108 is electrically connected to the ignition cells 70 in data line groups 218b and 218e. The data line 108f is electrically connected to the firing of cells 70 in data line groups 222b and 222e. The data line 108g is electrically connected to the ignition cells 70 in data line groups 224c and 224f, and the data line 108 is electrically connected to the ignition cells 70 in data line groups 226b, 226c, 226e and 226f . The ignition lines 208a-208f receive energy signals FIRE1, FIRE2 ... FIRE6 and supply the energy signals FIRE1, FIRE2 ... FIRE6 to the ignition cells 70 in fire groups 202a-202f. The fire line 208a receives the energy signal FIRE1 and supplies the energy signal FIREl to all the ignition cells 70 in FG1 in 202a. The fire line 208b receives the energy signal FIRE2 and supplies the energy signal FIRE2 to all the ignition cells 70 in FG2 in 202b. The fire line 208c receives the energy signal FIRE3 and supplies the energy signal FIRE3 to all the firing cells 70 at FG3 at 202c. The fire line 208d receives the energy signal FIRE4 and supplies the energy signal FIRE4 to all the ignition cells 70 at FG4 at 202d. The fire line 208e receives the energy signal FIRE5 and supplies the energy signal FIRE5 to all the ignition cells 70 in FG5 in 202e. The fire line 208f receives the energy signal FIRE6 and supplies the energy signal FIRE6 to all the ignition cells 70 in FG6 in .202f. Each line of fire 208a-2Ó8f supplies the power to the ignition resistors 52 which are connected to the conductive pass switches 72. The power is supplied to the ignition resistors 52 through energy signals FIRE1, FIRE2 .. FIRE6. The energy heats the ignition resistors 52 to heat and eject the ink from the drop generators 60. Variations in the amount of energy supplied to the ignition resistors 52 can cause ink droplets that are not uniform in size and shape , causing a distorted printed image. To uniformly eject the ink, each ignition line 208a-208f is configured to maintain a convenient energy variation between the ignition resistors 52. The energy variation is the maximum percent difference in the power dissipated by any two resistors. Ignition 52 in one of the ignition groups 202a-202f. The highest power is generally provided to the ignition resistance 52 closer to the link pad that receives the power signal FIREl, FIRE2 ... FIRE6 as if only a firing resistor 52 is activated. The lowest power is generally provided to the ignition resistance 52 which is furthest from the link pad that receives the FIREl, FIRE2 ... FIRE6 energy signal as if all the ignition resistors 52 in row subgroup are activated . The contribution contributions to the energy variation include the ignition line length, turn on the line width, turn on the line conductor thickness and the earth line, eg the dimensions of the reference conductor 250. In an embodiment exemplary, the ground line parts, eg each part of the reference conductor 250a, 250b, 250c, and 250, are lower than 800 um in amplitude, in a mode approximately 96 um in amplitude. In this exemplary embodiment, the ignition lines may be between 50 and 500 um in amplitude. These dimensions are for an exemplary mode; other modalities can use other sizes and dimensions. Energy variations of 10-15% are preferred and energy variations of up to 20% have been found to be suitable energy variations. The ignition groups 202a-202f and ignition lines 208a-208f are disposed in the given print head 200 to achieve a convenient energy variation between the ignition resistors 52. Instead of all the ignition cells 70 in a ignition group 202a-202f disposed along one side of the ink supply slot 204 or 206, causing a long ignition line 208a-208f, the ignition cells 70 in an ignition group 202a-202f are disposed along the opposite sides of the ink supply slot 204 or 206, or both along ink supply slots 204 and along ink supply slots 206. This reduces the length of the corresponding ignition line 208a-208f . The ignition cells 70 in the ignition group 202a are disposed along opposite sides of the ink supply slot 204 and the ignition cells 70 in the ignition group 202 are also arranged along opposite sides of the ink feed slot 204. Each of the ignition lines 208a and 208d is disposed along the opposite sides of the ink feed slot 204 and attached to a termination 204c or 204d of the ink feed slot 204. Each ignition line 208a and 208d is longer along one side of the ink feed slot 204, comparing with along the other side of the ink feed slot 204, to form considerably ignition lines in form of J-208a and 208d. The firing cells 70 in the fire group 202c are arranged along opposite sides of the ink food slot 206 and the firing cells 70 in the firing group 202f are also arranged along opposite sides of the fire. ink food slot 206. Each line of fire 208c and 208f is disposed along opposite sides of ink feed slot 206 and is affiliated with an end 206c or 206 of ink feed slot 206. Each line fire 208c and 208t is longer along one side of the ink food slot 206, comparing with each other, side of ink feed slot 206, forming considerably J-shaped fire lines 208c and 208f. The ignition cells 70 in the ignition group 202b are disposed both along ink supply slots 204 and along ink supply slots 206, and the ignition cells 70 in the ignition group 202e are disposed both along ink supply slots 204 as along ink supply slots 206. Each fire line 208b and 208e 5 is disposed both along ink supply slots 204 and along slots of ink. ink feed 206 and attached between the ink feed slots 204 and 206. Each line of fire 208b and 208e includes a rear section disposed between the food slots of ink 204 and 206. The rear section extends the ignition line 208b and 208e to one side of the given print head 200 and forms considerably fiery lines 208b and 208e in the form of a fork (or formed goal post). Substantially the ignition lines 208b and 208e in . J-shape and fork shape 208a-208f may be shorter in length than the ignition lines extending along only one side of the ink supply slot 204 or 206. Significantly the ignition line in the form of J- 208a 0 is electrically connected to the ignition cells 70 disposed along each of the opposite sides of the ink feed slot 204. A first section, indicated at 550, is electrically connected to the ignition cells. 70 in six data line groups 212a, 214a, 216a, 218a, 220a and 222a in FGl in 202a. A second section, indicated at 552, is electrically connected to the ignition cells 70 in two data line groups 224a and 226a in FG1 in 202a. The first section 550 is electrically connected to the second section 552 by a third section 554 at an end 204c of the ink feed slot 204. The first section 550 is longer than the second section 552 in the y-direction of the ink feed slot 204. The first section 550 supplies the power signal FIRE1 up to six ignition resistors 52 connected to the conductive pass switch 72. The second section 552 supplies the power signal FIRE1 up to two ignition resistances 52 connected to the conductive passage switch 72. The first section 550 is wider in Wl than the second section 552 in W2. The first section 550, the second section 552 and the third section 554 are formed as part of the second metal layer. In addition, the first section 550 includes a dual layer metal section, indicated with the shading at 556, formed as a part of the second metal layer electrically connected to the first metal layer along the side 200a of the given print head. The dual layer section 556 and the amplitude Wl of the first section 550 maintain a suitable energy variation between the ignition resistors 52 Substaneially the ignition line in the form of J-208d is electrically connected to the ignition cells 70 arranged to along each of the opposite sides of the ink feed slot 204. A first section, indicated at 558, is electrically connected to the ignition cells 70 in six data line groups 212d, '214d, 216d, 218d , 220d and 222d in FG4 in 202. A second section, indicated in 560, is electrically connected to the ignition cells 70 in two data line groups 224d and 226d in FG4 in 202d. The first section 558 is electrically connected to the second section 560 by a third section 562 to a termination 204d of the ink feed slot 204. The first section 558 is longer than the second section 560 in the y-direction length of the ink feed slot 204. The first section 558 supplies the FIRE4 energy signal up to six firing resistors 52 connected to the conductive pass switch 72. The second section 560 supplies the FIRE4 energy signal up to two resistors of on 52 connected to the conductive pass switches 72. The first section 558 is wider in Wl than the second section 560 in W2. The first section 558, the second section 560 and the third section 562 are formed as part of the second metal layer. In addition, the first section 558 includes a dual layer metal section, indicated with the shading at 564, formed when the part of the second metal layer electrically connected to the first metal layer along the side 200a of the given print head. The dual layer section 564 and the amplitude Wl of the first section 558 maintain a suitable energy variation between the ignition resistors 52. Substantially the ignition line in the form of J-208c is electrically connected to the ignition cells 70 arranged to along each of the opposite sides of the ink feed slot 206. A first section, indicated at 566, is electrically connected to the ignition cells 70 in six data line groups 212c, 214c, 216c, 218c, 220c and 222c in FG3 in 202c. A second section, indicated at 568, is electrically connected to the ignition cells 70 in two data line groups 224c and 226c in FG3 in 202c. The first section 566 is electrically connected to the second section 568 by a third section 570 to a termination 206c of the ink feed slot 206. The first section 566 is longer than the second section 568 in the y-direction of the ink feed slot 206. The first section 566 supplies the FIRE3 power signal to up to six ignition resistors 52 connected to the conductive pass switches 72. The second section 568 supplies the FIRE3 power signal up to two resistors of on 52 connected to the conductive pass switches 72. The first section 566 is wider in Wl than the second section 568 in W2. The first section 566, the second section 568 and the third section 570 are formed as part of the second metal layer. In addition, the first section 566 includes a dual layer metal section, indicated with the shading at 572, formed when the part of the second metal layer electrically connected to the first metal layer along the side 200b of the given print head. The dual layer section 572 and the amplitude Wl of the first section 566 maintain a convenient energy variation between the ignition resistors 52. Substantially the J-208f fire line is electrically connected to the ignition cells 70 arranged along each of the opposite sides of the ink feed slot 206. A first section, indicated at 574, is electrically connected to the ignition cells 70 in six data line groups 212f, 214f, 216f, 218f , 220f and 222f in FG6 in 202f. A second section, indicated at 576, is electrically connected to the ignition cells 70 in two data line groups 224f and 226f in FG6 in 202f. The first section 574 is electrically connected to the second section 576 by a third section 578 to a termination 206d of the ink feed slot 206. The first section 574 is longer than the second section 576 in the y-direction of the ink feed slot 206. The first section 574 supplies the FIRE6 energy signal to up to six ignition resistors 52 connected to the conductive • switches 72. The second section 576 supplies the FIRE6 energy signal up to two resistors of ignition 52 connected to the conductive passage switches 72. The first section 574 is wider in Wl than the second section 576 in W2. The first section 574, the second section 576 and the third section 578 are formed as part of the second metal layer. In addition, the first section 574 includes a dual layer metal section, indicated with the shading at 580, formed when the part of the second metal layer electrically connected to the first metal layer along the side 200b of the given print head. The dual layer section 580 and the amplitude Wl of the first section 574 maintain a convenient energy variation between the ignition resistors 52. The substantially fork-shaped ignition line 208b is electrically connected to the ignition cells 70 arranged at length of each ink feed slot 204 and 206. A first section, indicated at 582, is electrically connected to the ignition cells 70 in four data line groups 212b, 216b, 220b and 224b in FG2 in 202b. The second section, indicated at 584, is electrically connected to the ignition cells 70 in four data line groups 214b, 218b, 222b and 226b in FG2 in 202b. The first section 582 is electrically connected to the second section 584 by a third section or the section 586 postal. The first section 582 is similar in length along the y-direction and width along the x-direction to the second section 584. The first section 582 supplies the FIRE2 energy signal up to four ignition resistors 52 connected to the conductive pass switches 72. The second section 584 supplies the FIRE2 power signal to up to four ignition resistors 52 connected to the conductive pass switches .72. The first section 582 and the second section 584 are formed as part of the second metallic layer and are wider in W3 than the section width W2 The third section 586 supplies the FIRE2 energy signal to up to eight ignition resistors 52 connected to the conductive step switches 72. The third section 586 is formed as part of the second metal layer and includes a subsequent dual layer metal section, indicated with shading at 588. The rear dual layer metal section at 588 includes the second metal layer electrically connected to the first metal layer. The rear dual layer metal section 588 and the amplitude W3 of the first and second sections 582 and 584 maintain a convenient energy variation between the ignition resistors 52. The substantially fork-shaped ignition line 208e is electrically connected to the ignition cells 70 disposed along each ink-feed slot 204 and 206. A first section, indicated at 590, is electrically connected to the ignition cells 70 in four data line groups 212e, 216e, 220e and 224e in FG5 in 202e. The second section, indicated at 592, is electrically connected to the ignition cells 70 in four data line groups 214e, 218e, 222e and 226e in FG5 in 202e. The first section 590 is electrically connected to the second section 592 by a third section or the rear section 594. The first section 590 is similar in length along the y-direction and in amplitude along the x-direction the second section 592. The first section 590 supplies the FIRE5 energy signal up to four connected ignition resistors 52 to the conductive step switches 72. The second section 592 supplies the FIRE5 power signal up to four ignition resistors 52 connected to the conductive step switches 72. The first section 590 and the second section 592 are formed as part of the second metallic layer and are wider in W3 than the section width W2. The third section 594 supplies the FIRE5 power signal to up to eight ignition resistors 52 connected to the conductive pass switches 72. The third section 594 is formed as part of the second metal layer and includes a subsequent dual layer metal section. , indicated with shading at 596. The rear dual layer metal section at 596 includes the second metal layer electrically connected to the first metal layer. The rear dual layer metal section 596 and the amplitude W3 of the first and second sections 590 and 592 maintain a suitable energy variation between the ignition resistances 52. Figure 12 is a plan view diagram illustrating one embodiment of a section. 600 of the given print head 200. The section 600 includes three ignition cells, indicated at 602a-602c, an ink feed slot 204, a reference conductor 250 and an ignition line 208a. The three ignition cells 602a-602c are similar to the ignition cells 70 which are disposed throughout the given print head 200 and cases of ignition cells 70 that are part of the data line group Di at 212a in FG, 1 in 202a. The ignition cells 602a-602c include ignition resistors 52, memory circuits 74 and pass switches 72, such as ignition resistors 652a-652c memory circuit 674a and pass switch 672a. The ignition line 208a has been cut to reveal the ignition cell 602a. The ignition cell 602a includes memory circuit 674a, step switch 672a and ignition resistance 652a. The ignition resistance .652a includes a first resistive segment 604a, a second resistive segment 606a, and a conductive short bar 608a. The first resistive segment 604a and the second resistive segment 606a are electrically separated resistive segments connected together by the conductive short bar 608a. The memory circuit 674a is electrically connected to the gate of the passage switch 672a by a substrate conductor 610a. One side of the purge source path of the pass switch 672a is electrically connected to the reference conductor 250. The reference conductor 250 contacts the pass switches 672a where the reference conductor 250 is disposed on the switch of passage 672a. The other side of the purge source path of the pass switch 672a is electrically connected to the conductive lead of the lead 612a which electrically connects the purge source path of the pass switch 672a to the first resistive segment 604a. The second resistive segment 606a The second resistive segment 606a is electrically connected to the ignition line 208a by the conductive conductor ignition line 614a The ignition cell includes a memory circuit and the passage switch disposed under the ignition line 208a and a Ignition resistance 652b that is not disposed under the fire line 208a. The ignition resistance 652b includes a first resistive segment 604b, a second resistive segment 606b and a conductive short bar 608b. The first resistive segment 604b and the second resistive segment 606b are electrically separated resistive segments connected together by the convenient short bar 608b. The memory circuit and the pass switch of the ignition cell '602b are electrically connected together by a substrate conductor and one side of the purge source path of the pass switch is electrically connected to the reference conductor 250. The reference conductor 250 contacts the step switch where the reference conductor 250 is disposed on the step switch. The other side of the purge source path of the pass switch is electrically connected to the conductive lead of the pass switch 612b which electrically connects the purge source path of the pass switch to the first resistive segment 604b. The second resistive segment 606b is electrically connected to the ignition line 208a through the conductive lead of the ignition line 614b. The on cell 602c includes a memory circuit and the pass switch disposed under the ignition line 208a and an ignition resistor 652c that is not disposed under the fire line 208a. The ignition resistance 652c includes a first resistive segment 604c, a second resistive segment 606c and a conductive short bar 608c. The first resistive segment 604c and the second resistive segment 606c are electrically separated resistive segments connected together by the conductive short bar 608c. The memory circuit and the pass switch of the ignition cell 602c are electrically connected together by a substrate conductor and one side of the purge source path of the pass switch is electrically connected to the reference conductor 250. The driver reference 250 contacts the step switch where the reference conductor 250 is disposed on the step switch. The other side of the purge source path of the pass switch is electrically connected to the conductive conductor of the pass switch 612c which electrically connects the purge source path of the pass switch to the first resistive segment 604c. The second resistive segment 606c is electrically connected to the ignition line 208a through the conductive lead of the ignition line 614c. The ignition cells 602a-602c are formed in and on the semiconductor substrate 320 of the given print head 200. the memory circuits 74, such as the memory circuit 674a, the pass switches 72, such as the pass switch 672a , and the substrate conductors, such as substrate conductor 610a, are formed in the substrate 320 of the given print head 200. The reference conductor 250, the conductive conductor passage switch 612a-612c, the ignition line of conductive conductors 614a-614c and short bars 608a-608c are formed as part of the first metallic layer that is formed in the substrate 320. In addition, the first resistive segments 604a-604c and the second resistive segments 606a-606c are formed as a part of a resistive layer. The ink feed slot 204 is formed in the substrate 320 and supplies the ink to the ignition resistors 652a-652c. The ink feed slot 204 includes an ink feed slot edge 622 on the surface of the substrate 320. The ink feed slot edge 622 is in communication with the surface of the substrate 320 along the feed slot of ink 204. The reference conductor 250 is disposed along the ink feed slot 204 and spaced apart from the edge of the feed slot of. ink 622 and is formed as part of the first metal layer at 624. The opposite side 204a of the ink feed slot 204 includes the edge of the ink feed slot 622 and the opposite side 204b of the ink feed slot 204 includes an ink feed slot edge similar to the ink feed slot edge 622. In addition, each of the opposite sides 206a and 206b of the ink feed slot 206 includes an ink feed slot edge in communication with the surface of the substrate 320 and similar to the edge of the ink feed slot 622. The driver reference 250 is formed as part of the first metal layer and disposed between the memory circuit 74, such as the memory circuit 74a, and the ink feed slot 204. The conductive lead passage switch 612a-612c, the. Ignition line conductive conductors 614a-614c and ignition resistors 652a-652c are isolated from the reference conductor 250 and arranged in the ignition area resistors 626a-626c. the ignition area resistance 626a includes the conductive lead passage switch 612a,. the conductive conductor ignition line 614a and the ignition resistance 652a. the ignition area resistance 626b includes the conductive lead passage switch 612b, the conductive lead ignition line 614b and the ignition area resistance 652b. The ignition area resistance 626c includes the conductive lead passage switch 612c, conductive lead ignition line 614c and ignition resistance 652c.

The reference conductor 250 is arranged on a part of each of the passage switches 72 and between the memory circuit 74 and the ignition area resistances 626a-626c. The reference conductor 250 is also disposed between the edge of the ink feed slot 622 and the ignition area resistors 626a-626c. In addition, the reference conductor 250 is disposed between the ignition-area resistors 626a-626c. The reference conductor 250 is considerably flat between the memory circuit 74 and the edge of the ink feed slot 322. The reference conductor 250 has a larger or increased area due to the part of the reference conductor 250 which is arranged between the edge of the ink feed slot 622 and the ignition area resistance 626a-626c. The larger area of the reference conductor 250 reduces the variation of energy between the firing cells and provides a more uniform ink pattern. The ignition line 208a includes a second metal layer that is disposed over portions of the ignition resistance areas 626a-626c and disposed of the ignition resistance areas 626a-626c to a side 200a of the given printhead 200. The second metallic layer of the ignition line 208a is provided over portions of the conductive conductor passage switch 612a-612c and the conductive conductor ignition line 614a-614c, and electrically connected to the conductive conductor ignition line 614a-614c by way of the second metallic layer to the first metallic layer. The second metallic layer of the ignition line 208a is also disposed over portions of the reference conductor 250 disposed between the ignition resistance areas 626a-626c and the memory circuit 74. In addition, the second metal layer of the ignition line 208a is disposed on permitted data lines routed into the first metal layer between the reference conductor 250 and a side 200a of the given print head 200. The ignition line 208a includes a dual layer section at 556 which includes the first metal layer in 630 electrically connected through a path to the second metallic layer of ignition line 208a. The dual layer section at 556 is disposed along one side 200a of the given print head 200. In the operation, one of the ignition cells 602a-602c is turned on or activated at the same time. In one example of operation, the memory circuit 674a provides a voltage level at the gate of the pass switch 672a to turn the pass switch 672a on or off. The ignition line 208a receives the energy signal FIRE1 and provides a pulse of energy to the second resistive segment 606a by the conductive conductor ignition line 614a. If the step switch 672a is conducting, the energy pulse provides a current through the ignition of the resistor 652a, conductive lead-through switch 612a and the pass-through switch 672a for the reference conductor 250. With the reference conductor 250 electrically connected to a reference voltage, e.g. ground, flows current through the reference conductor 250 to ground. The arrangement of ignition cells 602a-602c in section 600 is similar to the arrangement of ignition cells 70 along ink supply slots 204 and 206 in all portions of the given print head 200. In addition, the The line layout of was switched on 208a and the reference conductor 250 in section 600 is similar to the arrangement of ignition lines 208 and the reference conductor 250 throughout the given print head 200.

Fig. 13 is a diagram illustrating a partial cross-section of a given printhead mode 200 taken at the position of line 13 in Fig. 12. Fig. 13 is not drawn to scale for clarity. The partial cross section includes the orifice layer 400, second metal layer 404, insulation layer 406, first metal layer 402 and substrate 320. The through switch 672a and the ink feed slot 204 is formed in the substrate 320 which includes a substrate surface 320a. The ink feed slot 204 includes the edge of the ink feed slot 622 in communication with the surface of the substrate 320a. The first metallic layer 402 is formed on the surface of the substrate 320a. The insulation layer 406 is formed in the first metal layer 402 and the surface of the substrate 320a and defines the ink feed channel 710. The orifice layer 400 has a front face 400a and an opening injector 712 in the front face 400a . The orifice layer 400 also has an injection chamber or vaporization chamber 714 and a fluid path or ink supply path 716 formed therein. The ignition resistance, indicated at 652a, is located at least partially under the vaporization chamber 714, which is between the ignition resistance 652a and the opening injector 712. the ink supply path 716 is located between the vaporization chamber 714 and the ink feed channel 710. The vaporization chamber 714 communicates with the opening injector 712 and the ink supply path 716. the ink supply path 716 communicates with the vaporization chamber 714 and the channel ink feed 710 communicating with the ink feed slot 204. The ink feed slot 204 supplies ink to the vaporization chamber 714 through the ink feed channel 710 and the ink feed path 716. The first metallic layer 402 is formed on the substrate 320 and isolated from the second metallic layer 404 by the insulating layer 406. The first metallic layer includes a layer conductive 418 and a resistive layer 420. The conductive layer 418 is made of a suitable conductive material, for example copper-aluminum, and the resistive layer 420 is made of a suitable resistive material, for example tantalum-aluminum. The first metallic layer 402 includes in one embodiment multiple conductors and components including the reference conductor 250, the conductive conductor passage switch 612a, the conductive conductor ignition line 614a, the ignition resistance 652a and a part of the ignition line 208a . The ignition resistance 652a is made of the first metal layer 402 and includes the second resistive segment 606a and the short bar 608a. The second resistive segment 606a includes the resistive layer 420. The conductive layer 418 is not disposed in the second resistive segment 606a. The short bar 608a includes the conductive layer 418 and the resistive layer 420. The second resistive segment 606a is electrically connected to the short bar 608a and the conductive lead ignition line 614a. The ignition line 614a is made of the first metallic layer 402 and includes the conductive layer 418 and the resistive layer 420. The ignition line of the conductive conductor 614a is electrically connected to the second metal layer 404 by the track 722 formed in the layer 406. The track 722 in the insulating layer 406 is filled with the conductive material for electrically connecting the conductive conductor ignition line 614a to the second metallic layer 404. The reference conductor 250 is arranged on the substrate 320 on a part of the passage switch 672a and between the ignition resistance 652a and the edge of the ink supply slot 622. The reference conductor 250 is electrically connected to one side of the purge source path of the passage switch 672a. The other side of the purge source path of the pass switch 672a is electrically connected to the conductive lead passage switch 612a which is electrically connected to the first resistive segment 604a of the ignition resistor 652a. The reference conductor 250 and the conductive conductor passage switch 612a are formed as part of the first metal layer 402 and include the conductive layer 418 and the resistive layer 420. The insulation layer 406 is an insulating and passivating layer disposed on the first metallic layer 402, including reference conductor 250 and ignition resistance 652a. The insulation layer 406 defines the ink feed channel 710 and is disposed along the edge of the ink feed slot 622. The insulation layer 406 covers the reference conductor 250 between the ignition resistance 652a and the edge of the ink feed slot 622 and prevents the ink from touching and corroding the reference conductor 250. The insulation layer 406 is also disposed on the short bar 608a and the second resistive segment 606a and prevents the ink from touching and corroding the ink. short bar 608a and the second resistive segment 606a. In addition, the insulation layer 406 is disposed over the conductive conductor ignition line 614a, conductive conductor passage switch 612a and the reference conductor 250 located on the passage switch 672a. The track 722 is etched into the insulating layer 406 to electrically connect the conductive lead ignition line 614a to the second metallic layer 404. A track 723 is etched into the insulating layer 406 and filled with a conductive material for electrically connecting the second metal layer 404 to the first metal layer 402 to form the dual layer section 556. The insulation layer 406 is formed as part of a suitable insulation material. In one embodiment, the insulation layer 406 includes two layers, for example, a layer of silicon carbide and a layer of silicon nitride. A part of the ignition line 208a is formed in the second metallic layer 404 and is electrically connected via the track 722 for the conductive conductor ignition line 614a. The second metallic layer 404 includes a first layer 424, made of a suitable material, for example tantalum, and a second layer 426 made of a suitable auspicious material, for example gold. The first layer 424 is arranged to come into contact with the conductive lead ignition line 614a via track 722. The first layer 424 is also arranged to contact the first metal layer 402 via track 723 to form the section 556 of the dual layer of the ignition line 208a. In addition, the first layer 424 is disposed at 728 in the insulation layer 406 on the second resistive segment 606a. The first layer 424 at 728 protects the insulation layer 406 when the ink is heated by the ignition of the resistor 652a. The second layer 426 is a gold conductive layer disposed in the first layer 424 to form a portion of the ignition line 208a. The ignition line 208a receives the energy signal FIRE1 and supplies power pulses for the conductive conductor ignition line 614a and a second resistive segment 606a, by turning on the resistor 652a to heat and eject the ink from the vaporization chamber 714 by the injector 712. Although the specific embodiments have been illustrated and described herein, it will be appreciated by those with ordinary skill in the art that a variety of alternate and / or equivalent embodiments may be substituted for the specific embodiments shown and described without departing of the scope of the present invention. This application tries to cover any adaptation or variations of the specific modalities discussed here. Therefore, it is intended that this invention be limited only by the claims and their equivalents.

Claims (21)

1. CLAIMS 1. A fluid ejection device characterized in that it comprises: a first fluid supply source having an edge of the first fluid supply source in communication with a substrate surface; first ignition resistors disposed along the first fluid supply source and configured to respond to a first current for heating the fluid provided by the first fluid supply source; and a reference conductor configured to conduct the first current of the first ignition resistors, wherein the reference conductor is disposed between the first edge of the fluid supply source and the first ignition resistors.
2. 2. The fluid ejection device according to claim 1, characterized in that the reference conductor is disposed between at least two of the first ignition resistors.
3. 3. The device for ejecting fluid of compliance with claim 1, characterized in that it comprises step switches, wherein each of the step switches is electrically connected to a first corresponding ignition resistance of the first ignition resistors and the driver of reference is arranged on a part of the passage switches.
4. 4. The fluid ejection device according to claim 1, characterized in that it comprises ignition area resistances disposed along the first fluid supply source, wherein the reference conductor is disposed between at least two resistors of the fluid source. adjacent ignition areas.
5. 5. The fluid ejection device according to claim 1, characterized in that it comprises passage switches formed in a first layer and ignition area resistances formed in a second layer disposed along the first fluid supply source, wherein the reference conductor is disposed between resisting adjacent ignition areas and over a part of the passage switches.
6. The fluid ejection device according to claim 1, characterized in that the reference conductor is arranged along the opposite sides of the first feed slot and along the entire length of the opposite sides of the first fluid power source.
7. 7. The fluid ejection device according to claim 1, characterized in that the first ignition resistors are arranged along opposite sides of the first fluid supply source and the reference conductor is disposed between the first resistors. of ignition and the first fluid supply source edge along one of the opposite sides of the first fluid supply source and the first ignition resistors and the edge of a second fluid supply source along the another of the opposite sides of the first fluid feed source.
8. The fluid ejection device according to claim 1, characterized in that it comprises a second source of fluid augmentation having a second edge of the fluid supply source in communication with the surface of the substrate and second ignition resistors, wherein a first part of the second ignition resistors is disposed along the first fluid feed source and configured to respond to a second stream to heat the fluid provided by the first fluid feed source and a second part of the second ignition resistors are arranged along the second fluid supply source and configured to respond to the second stream to heat the fluid provided by the second fluid supply source, wherein the reference conductor is configured to conduct the second current of the second resistors of. ignition and is disposed between the first edge of the fluid supply source and the first part of the second ignition resistors and between the second edge of the fluid supply source and the second part of the second ignition resistors.
9. 9. The fluid ejection device according to claim 1, characterized in that it comprises: vaporization chambers fiuidically connected to the first fluid supply source; and an insulation layer configured to isolate the reference conductor from the fluid flowing from the fluid supply source to the vaporization chambers, wherein the reference conductor is disposed between the vaporization chambers and the first source edge of the vaporization chamber. fluid feed.
10. 10. A fluid ejection device characterized in that it comprises: a first fluid supply source having a first fluid supply source edge; first vaporization chambers fluidically connected to the first fluid supply source; a reference conductor disposed between the first vaporization chambers and the first edge of the fluid supply source; and an isolation structure configured to isolate the reference conductor from the fluid flowing over the first edge of the fluid supply source to the first vaporization chambers.
11. 11. The fluid ejection device according to claim 10, characterized in that the reference conductor is arranged between at least two of the first vaporization chambers.
12. 12. The fluid ejection device according to claim 10, characterized in that the reference conductor is disposed along opposite sides of the first fluid supply source.
13. 13. The fluid ejection device according to claim 10, characterized in that the first vaporization chambers are arranged along opposite sides of the first fluid supply source and the reference conductor is disposed between the first vaporization chambers and the first edge of the fluid supply source along one of the opposite sides of the first fluid supply source and the first vaporization chambers and a second edge of the fluid supply source along the other of the opposite sides of the first fluid feed source.
14. 14. The fluid ejection device according to claim 10, characterized in that it comprises fluid routes, wherein each of the fluid routes is fluidically connected to the first fluid supply source and corresponding to one of the first Vaporization chambers and the reference conductor is isolated from the fluid flowing through the fluid routes through the insulation structure.
15. 15. The fluid ejection device according to claim 10, characterized in that it comprises: a second source of fluid supply having a second borede of the power source; and second vaporization chambers fluidically connected to the second fluid supply source, 5 wherein the reference conductor is disposed between the second vaporization chambers and the edge of the second fluid supply source and the isolation structure are configured to isolate the reference conductor of the fluid flowing over the second edge of the fluid. 10 the fluid supply source to the second vaporization chambers.
16. 16. The fluid ejection device according to claim 15, characterized in that the second vaporization chambers are arranged along sides 15 opposite of the second fluid supply source and the reference conductor is disposed between the second vaporization chambers and the second edge of the fluid supply source along one of the opposite sides of the second supply source of fluid. fluid and 20 the second vaporization chambers and a third edge of the fluid supply source along the other of the opposite sides of the second fluid supply source.
17. 17. The fluid ejection device according to claim 10, characterized in that it comprises ignition resistors, wherein each of the ignition resistors are correspondingly arranged in one of the first vaporization chambers and configured to respond to a current for heating the fluid provided by the first fluid supply source and the reference conductor is configured to conduct the current of the ignition resistors.
18. 18. The fluid ejection device according to claim 17, characterized in that it comprises passage switches, wherein each of the passage switches are electrically connected between one of the ignition resistances and the reference conductor.
19. 19. The fluid ejection device according to claim 10, characterized in that the reference conductor is arranged between two of the ignition resistors and on a part of the passage switches.
20. 20. A fluid ejection device characterized in that it comprises: a fluid supply source; ignition resistors disposed along the fluid supply source and configured to respond to a current to heat the fluid provided by the fluid supply source; and a reference conductor configured to conduct the current of the ignition resistors, wherein the reference conductor is disposed between two of the ignition resistors.
21. 21. The fluid ejection device according to claim 20, characterized in that it comprises the 'ignition of resistance areas disposed along the fluid supply source, where the reference conductor is disposed between adjacent ignition resistance areas.