A tattoo needle structure is provided. A tattoo needle has a plurality of needle tips, an ink holding space is formed by the arrangement of the needle tips, and a multi-component alloy film is deposited on each needle tip of the tattoo needle by sputtering technology, so that when the tattoo needle is dipped into the tattoo ink, the tattoo ink does not stick to the surface of the multi-component alloy film by the hydrophobic property of the multi-component alloy film, and the tattoo ink is contained in the ink holding space by the cohesive property of the tattoo ink. Thus, when the tattoo needle is dipped into the tattoo ink and the tattoo process is performed, the dyeing area of the skin with the tattoo ink is the cross-sectional area of the ink holding space, thereby achieving the technical effect of improving the contouring resolution of a tattoo.

A compact battery and voltage supply controller apparatus for a tattoo machine is disclosed. The battery and controller are configured to connect the battery to the tattoo machine through replaceable internally received magnetic connection adapters. The toggle switch operated display screen provides easy-to-view status and health of the battery and incremental voltage adjustment using a voltage boost circuit and adjustment knob. The internal battery can be replaced and/or removed and recharged.

An automatic tattoo apparatus can be used to robotically apply tattoos. A customer can shop on an online tattoo marketplace to select designs created by various artists located anywhere. The online tattoo marketplace can process and manage payments, artist and/or customer profiles, bookings, tattoo design uploads, browsing and design selection, design changes, and/or perform other actions. The automatic tattoo device can apply tattoos precisely, quickly, and may with reduced pain. The tattoo apparatus can apply a wide range of different types of tattoos, including but not limited to micro tattoos, dotwork, blackwork tattoos, realism tattoos, fine-line tattoos, etc.

A tattoo pen system is claimed, where a pen base may be configured to mate with a plurality of pen heads to allow for a user to freely interchange one head for another during use. A practice pen having interchangeable heads may be sized and shaped to have similar dimensions and weight to a mechanized pen having interchangeable heads. This allows for a user to practice drawing stencils and applying tattoos using a practice pen base with interchangeable heads, and then later smoothly transition to drawing stencils and applying tattoos using a mechanized pen base with interchangeable heads. The pen base of either the practice pen or the mechanized pen may be configured to mate with a plurality of needle cartridges.

Needle modules and associated methods. A needle module includes a module housing and a needle assembly operatively supported within the module housing. The module housing extends along a housing axis and includes a housing tip with a tip outlet. The needle assembly includes a drive bar extending at least partially along a drive bar axis and a needle grouping extending from the drive bar at least partially along a needle grouping axis and contacting the housing tip at a needle grouping contact location and at an angle relative to the housing tip at the needle grouping contact location. In examples, a method of assembling a needle module includes preparing a needle assembly that includes a needle grouping and a drive bar and installing the needle assembly within a module housing such that the needle grouping contacts the module housing at a needle grouping contact location.

A grasp-activated power switch is integrated within a handle for a hand-held power tool. The switch has an outer shell defining an inner channel with a first and second pin extending therein. The tool body has a first and second conductor. A motor within the tool body is electrically connected to one of the first or second conductors and to an internal battery. The internal battery is connected to the other of the first or second conductors. On its surface the outer shell has actuating and non-actuating areas. A manual grasping force when applied to the actuating area connects the first and second pins with the first and second conductors to complete an electrical circuit. The closure energizes the tool motor. With each grasp, the switch toggles power to the motor off or on, and when on, the motor transmits power through the inner channel.

This invention provides novel apparatus' and methods for tattooing skin. One embodiment provides an apparatus for tattooing skin comprising a frame and a plurality of pressurized compartments for storing tattooing fluids. A user may select one or more of the pressurized compartments to dispense a chosen skin colorant contained in the compartment(s). A fluid dispenser receives the chosen skin colorant(s). The tattooing fluid(s) in the chosen pressurized compartment(s) is forced into the fluid dispenser by a pressure source in the pressurized compartment, and by a pumping mechanism coupled to the apparatus. Tattooing fluid is provided to a tattooing needle through a fluid connection coupled to the fluid dispenser and disposed at an operating end of the tattooing needle.

A tattooing device is designed for ingraining a design on the skin. The tattooing device includes an electric drive motor with a rotatable motor pin. The motor pin defines an axis of rotation. A rotatable actuator cam is operatively connected to the motor pin, and comprises a cam post axially offset from the motor pin and the axis of rotation. An elongated drive shaft is operatively connected to the cam post, such that rotation of the actuator cam effects simultaneous substantially linear reciprocating movement of the drive shaft. A needle assembly is operatively connected to the drive shaft, and adapted for carrying a pointed tattooing needle for penetrating the skin.

The present disclosure describes aspects of injected conductive tattoos for powering implants. In some aspects, a system comprises a conductive tattoo used to efficiently transfer power wirelessly received from a transmitter outside a body to an electronic device in the body. The conductive tattoo is formed from a conductive material injected into an outermost permanent layer of the body. The conductive tattoo is configured to wirelessly receive and relay the power from the transmitter to the electronic device. In particular, the conductive tattoo may transfer the power to the electronic device over a coupling between the conductive tattoo and the electronic device.