the following examples and accompanying drawings , which are incorporated into and form part of this disclosure , illustrate embodiments of the invention and together with the description , serve to explain the principles of the invention . fig1 shows an embodiment of a device according to the present invention that enables carrying out the method of the invention . fig1 shows the skin - decorating apparatus 10 of the present invention as it is being used on a living human 5 as human stands in a doorway or break 60 in a wall 34 near support ceiling 33 . apparatus 10 is powered by motor 40 . left and right bracket assemblies 32 and 31 are fixed into support ceiling 33 . carriage 20 bearing paint injectors 11 , 12 , 13 , 14 and 15 rides along shafts 41 and 42 and is moved by drive chain 43 and engaged by sprocket 22 . left and right support assemblies 70 and 90 are positioned by or moved along tracks 25 and 27 and z - roller chains 26 and 28 . z - drive sprockets 80 and worm screw 83 influence z - axis movement within the limits of the capabilities of the previous art . camera with digital output and optical sensors 30 interacts with central processing unit to more finely coordinate x , y , z axis motion . fig2 shows a top view of skin decoration apparatus with carriage 20 moving curved shafts 41 and 42 attached to left and right support assemblies 70 and 90 as apparatus 10 decorates living human subject 5 with pigments from paint injectors 11 , 12 , 13 , 14 and 15 . drive chain 43 becomes taught and linear if chain is made of flexible material in contrast to relatively rigid drive shafts . left and right bracket assemblies 32 and 31 ( dashed areas ) are fixed into support ceiling . fig3 shows top view of skin decoration apparatus with digital camera or optical sensor 30 and ceiling - mounted screw - driven z - axis modifier . further enhancement of z - axis capabilities of the current wirejet ™ enable the device to better handle the extreme curvatures of the living human or animal body as opposed to the relatively flat or predictably planar and angled print or non - living media that is the current appreciated target for wirejet ™ technology . left and right z - axis enhancers 56 and 51 are mounted on their superior aspects to support ceiling . left and right z - axis enhancers 56 and 51 are fixed to left and right bracket assemblies on the inferior aspects of the enhancers . motors 53 control screws 54 resting in slots 52 of the housing of left and right enhnacers 56 and 51 . screws 54 position short shafts 55 that protrude superiorly from slots 52 . short shafts 55 terminate on movable plate ( unseen in this view ) capable of sliding along bottom of 51 to which are attached the previously described left and right bracket assemblies . shaft 41 and accompanying drive chain 43 ( shown at edge view ) continue to influence movement of carriage 20 and accompanying paint injectors 11 , 12 , 13 , 14 , and 15 as they decorate living human subject 5 with pigments . however , sleeve mechanism 50 is present and capable of sliding on portions of 43 , sectioned , allows 43 to lengthen and compress based upon forces created by the z - axis modifiers 51 and 56 when in extreme opposing positions ( for example left forward and right retracted . fig4 shows skin decoration apparatus with digital camera or optical sensor 30 mounted on robotic arm 100 sitting on base 101 controlled by feedback from central processing unit of computer 102 and camera / sensor 30 . further enhancement of z - axis capabilities of the current wirejet ™ enable the device to better handle the extreme curvatures of the living human or animal body 5 as opposed to the relatively flat or predictably planar and angled print or non - living media that is the current appreciated target for wirejet ™ technology . robotic arm 5 with joints and computer control moves carriage 20 and accompanying paint injectors 11 , 12 , 13 , 14 , and 15 as they decorate living human subject 5 with pigments creating the artful image 6 . fig5 shows present invention ( skin decoration apparatus ) in use with subject and target body decoration zone flattened by pressing against a planar array of restraining wires . standard wirejet ® unit 10 is located over door - space 60 with intersecting restraining wire 110 pressing on shoulder or scapula . to enhance of the capabilities of the current wirejet ™ for the extreme curvatures of the living human or animal body ( as opposed to the relatively flat or predictably planar and angled print or non - living media that is the current target for wirejet ™ technology ) the arced surfaces to be decorated may be compressed against a planar grid or array of intersecting wires 110 . intersecting wires 110 mounted around doorway or break 60 in a wall 34 near support ceiling 33 . apparatus 10 is powered by motor 40 . left and right bracket assemblies 32 and 31 are fixed into support ceiling 33 . carriage 20 bearing paint injectors 11 , 12 , 13 , 14 and 15 rides along shafts 41 and 42 and is moved by drive chain 43 and engaged by sprocket 22 . left and right support assemblies 70 and 90 are positioned by or moved along tracks 25 and 27 and z - roller chains 26 and 28 . z - drive sprockets 80 and worm screw 83 influence z - axis movement , within the limits of the capabilities of the previous art , as human subject recipient 5 of the art is decorated . the capabilities of the previous art when used in the fashion of fig5 will require an artist with brush or other painting instrument to , by hand , fill - in the areas of skin or skin appendage that were occluded by the restraining wires 110 . fig6 shows pigment sparing tube - coating modification of present invention in close - up view . modification of current art of wirejet ™ is necessary using smaller reservoirs to reduce ink wastage and usage . nozzle body 120 ejects compressed air through nozzle 125 onto wire 135 containing pigments removed from miniaturized pigment reservoir 140 having a limited seal 141 at its base or in an invaginating seal rising vertically inside from the base . pigment vial 147 containing a tilted fluid level of liquid pigment 146 is held by clamp arm 145 to the miniaturized pigment reservoir 140 and is secured by collar 148 . support structures 137 and 138 maintain the relationship of the elements between which pass wire 135 on superior and inferior wheels numbered 130 to deposit pigmented skin decoration on human subject 5 . the foregoing description of preferred embodiments of the invention is presented for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise form disclosed . many modifications and variations are possible in light of the above teaching . the embodiments were chosen and described to best explain the principles of the invention and its practical application to thereby enable others skilled in the art to best use the invention in various embodiments and with various modifications suited to the particular use contemplated . scanning in two directions that are substantially parallel to the skin surface is sufficient for areas that are fairly flat , such as on the chest or back . scanning in three directions allows the apparatus to print with high resolution on a highly contoured surface such as an arm , an ankle , or a breast . the print head has an array of nozzles , where the array can be of any size , depending on various factors , including the surface area to be decorated , and the printing speed and level of complexity desired . for example , the print head could contain as few as three nozzles , to deliver three primary colors , or the array could include more nozzles . the ink should be non - toxic , biocompatible , and preferably of vegetable or mineral origin , where either organic or inorganic compounds can be used . examples of such inks include the green , black , red , blue , yellow amunez tattoo paints , amunez international , australia and indonesia . fluorescent inks or other luminescent compounds could be used to apply “ glow in the dark ” tattoos . water - soluble inks could be used for making test decorations , which could be evaluated and easily washed off . modification using smaller reservoirs and tubular coating devices may be beneficially reduce ink cost and usage . if a prospective permanent tattoo client finds the temporary 3 week version of the tattoo satisfactory , then the permanent version using or permanent tattoo colors could be traditionally using the temporary version as a guide . liposome technology could be used to encapsulate the inks or dyes so that deeper skin penetration is possible thus lengthening the life of the decoration beyond three weeks . inks used in the present invention may be pre - sterilized or contain preservatives so that germs or bacteria do not grow in them , which could cause serious skin infections . alternatively , antibiotics could be mixed with the inks . the inks may be rapid - drying ( in a volatile solvent ), or may require slight heating ( e . g ., under a heat lamp or heat blower or other method to “ set ” the design ). inks that set with exposure to various other electromagnetic spectral wavelengths ( e . g ., ultraviolet ) may be used to “ set ” the design as well . after the apparatus is placed next to the surface of the skin in preparation for printing an image , a computer electronically controls ( e . g ., through cable ) the translation of the print head and firing of the nozzles to generate the selected decoration . the computer controls the position and firing of the wirejet ™ with multiple colored inks , thus allowing a multicolored image or pattern to be placed on any part of the human body . the subject - user can select any image that can be stored in the computer , including simple patterns , artwork , graphics , or scanned pictures . personalized images could be scanned to produce a digital file . using methods known in the art , these digital images are processed to control the scanning and firing of the wirejet ™ nozzle to produce the desired skin decoration . the image can be of various sizes depending on the parts of the body to be decorated and the image sizes to be produced . for example , a 10 to 100 cm 2 image can be used to decorate small areas such as hands , shoulders , or feet . large designs may be applied in a mosaic fashion , where scanning is performed over a given area to apply a portion of the design , then moved to the adjacent area to apply the next portion . the various portions of the designs may be aligned by optical means or simply by visual inspection using reference marks on the apparatus and skin . the size of the area to be decorated can be determined by simple physical measurements or by using a calibrated electronic camera and computer system . an electronic camera system could also be used to determine the topography of the surface to be printed . for example , the camera system can use grid projection or moiré techniques known in the art to map the surface topography . the topography data can be used to control the distance between the print head and the skin surface . in all embodiments , a sensor may be used to measure the separation or distance of the nozzles from the skin surface . this distance is normal to the skin surface or in the vertical or z direction . the sensor can be a mechanical probe that lightly touches the skin or an optical sensor where the signal amplitude is proportional to the separation . the sensor signal can be used as a feedback control to maintain a constant nozzle to skin separation and thereby improve image quality . a simple spacer or spacers may be used to maintain a substantially constant physical distance between nozzles and the skin surface . before the decoration is applied , the skin can be prepared by cleaning the skin using an appropriate cleaner ( e . g ., alcohol , acetone ) and an abrasive cloth ( gauze , buff - puffs , abrasive wash sponge ). vigorous rubbing will remove excessive dead surface skin cells , which improves ink penetration into the skin and may extend the lifetime of the decoration . on most areas of the body , skin cells migrate in the epidermis from the deep basal layer through the prickle cell layer and into the granular layer . these cells eventually become the dead surface layers . the process of cell transit from the bottommost cells to the top surface of the skin usually takes about thirty days . ink or dye application in the epidermal layers , therefore , leads to a temporary decoration that lasts at most 30 days . examples of such inks include the green , black , red , blue , yellow amunez tattoo paints , amunez international , australia and indonesia . aside from the superficial process of applying ink to the epidermis , there may be a deeper and longer - lasting form of inkjet tattooing that could take place if the epidermis was removed by an instrument such as a laser , or by salabrasion ( salt - abraded ) or dermabrasion . epidermal removal would expose the collagen or dermal layers , which would provide easier access the upper dermis where dyes or ink or even biocompatible paints could be permanently applied to the skin . alternatively , increasing the air pressure driving the wirejet ™ application can be used to shoot the ink through the epidermis to penetrate the dermis . the foregoing description of preferred embodiments of the invention is presented for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise form disclosed . many modifications and variations are possible in light of the above teaching .
the human body is decorated with highly detailed , multicolored , personalized designs using wirejet ™ or electronically controlled ink ejection or similar printing technology . the designs are applied to the epidermal and upper dermal skin layers and last for at least several weeks . the decoration is produced by a print head comprising wirejet ™ nozzles , which spray biocompatible inks or dyes onto the skin . the wirejet ™ may be connected to a scanning mechanism to scan in one , two , or three directions . the decorations can be applied to contoured skin surfaces following flattening against a screen of intersecting wires , by robotic arm , or using z - axis technology . a computer stores the desired design and controls the firing of the wirejet ™ to produce the desired decoration or tattoo .