ES2541922T3 - Device for applying a composition on human keratinous material - Google Patents

Abstract

Device for applying a cosmetic composition on human keratinous material, the device comprises: * a non-colorimetric detection system (11) that is sensitive to acoustic waves and is a handpiece that includes a microphone to detect the noise represented by rubbing against the skin, sensitive to humidity, to at least one predefined chemical or biological compound, to at least a mechanical or electrical magnitude, to temperature and / or relief; * an application system (12) for applying the composition on keratinous material, comprising a reservoir containing the cosmetic composition; and * a processor unit (14) for controlling the application system as a function of at least data received from the detection system.

Description

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[0097] The application system may include a printhead capable of printing over the entire surface for treatment. By way of example, the printhead may include one or more ink ejection nozzles. Taking into account that the user moves the handpiece along an X axis, the print head can extend perpendicularly to the direction of travel X of the equipment.

[0098] The printhead may be stationary within the equipment or it may be mobile along a Y axis that is perpendicular to the X axis. For example, the equipment can be used to perform scanning in a Y direction of the printhead. printing with or without printing taking place during carriage return. The car can be driven by stepper motors, for example engines that are directly driven by a USB port.

[0099] When the handpiece has a plurality of printheads that are stationary within the handpiece, the printheads may be in alignment or otherwise, for example they may be in a staggered configuration.

[0100] The handpiece may include an application system with at least one printhead that is capable of moving relative to the aforementioned carriage, along a Z axis that is perpendicular to the X and E axes

Y.

[0101] The print head can be operated mechanically during printing, for example by a vibrator, to obtain a blur.

[0102] The handpiece may include a vacuum or fan system to accelerate drying, and / or a heating system.

[0103] When the composition deposited on the keratinous material requires exposure to light radiation, for example UV radiation, to polymerize, the handpiece may include a corresponding lighting system to aid in the polymerization of the composition (s) in question.

[0104] The application system may have a print line composed of a plurality of print elements arranged along a print line. As an example, the print elements may be nozzles that allow the color to be printed locally to be created when printing.

[0105] Printing can take place by depositing a plurality of inks of different colors in a juxtaposed manner

or so that it is at least partially superimposed. The slots deposited of different inks may optionally be the same size.

[0106] The skin area may be completely covered by the ink (s) or spaces may be left between the ink tanks. The inks can be deposited on the skin in a screen printing configuration.

[0107] When an image is printed on the skin, the image does not need to be uniform, that is, the printing can make use of at least one ink that is deposited unevenly over the area being treated.

[0108] The device may include a control system that allows the user or the device to determine if the printing is satisfactory or if the printing needs to be continued or corrected. As an example, the control system uses the acquisition system or includes a specific color detector or camera. For example, the device can reproduce the skin being treated on a screen. Although hidden by the device, the skin can be visualized by the user, thus allowing the user to access the result while it is achieved.

[0109] Because the movement of the handpiece is not necessarily rectilinear, it is possible to provide treatment that is "point to point" instead of "line to line" so that printing takes place at identified positions with respect to the skin even if the path followed by the handpiece is curved.

Application of a composition that has a color matching the skin color

[0110] The application system may apply a composition that has a color that has been selected to match a skin color, even where the composition is obtained by mixing components of different colors outside the device.

[0111] For example, the handpiece can send skin color related data to a mixing unit. The mixing unit can mix two or more components to obtain a mixture that has a color that matches the skin color. In some embodiments, the user can use an independent mixing unit, which is configured to analyze the skin and to mix at least two components to produce a mixture that has a color that matches the analyzed skin. The mixing unit can be used, for example, at home, at a point of sale or at any suitable place.

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[0112] In other embodiments, the handpiece can send skin color data to a decision unit. The decision unit can be located remotely and can be configured to identify, for example, from a product library, a product that has a color that matches the skin color.

[0113] In other embodiments, the user uses a decision unit. The decision unit is able to analyze the skin, to identify, for example, in a library, a product that has a color that matches the color of the skin. The mixing unit can be used, for example, at home, at a point of sale or at any suitable location.

[0114] The user can load a composition into the handpiece. The user can also load a product in a plurality of times over a particular period of time (for example, monthly, weekly, daily, (several times a year), to adapt the color of the composition to the natural variations of skin color at different times during the period of time, and at ambient light at different times (for example, of the year) among other things.

[0115] The user can load one or more compositions in the handpiece. It can analyze the color of the skin, either at each use of the device and / or regularly (for example, not every time the device is used). The device can automatically select the product to be used or alert the user that the user can load a specific product on the device. The device may store (for example, in a memory) data that will allow the identification of a product that matches at least one skin color or may have access to a memory that will allow such identification.

[0116] In some embodiments, a skin color is measured at a time t and the products are made with colors that correspond to the colors expected for a time Δt (for example, during the year) for an individual. Products can be made by mixing components of various colors (for example, by the user himself who identifies the products in a product library) or by other suitable methods. The range of products and corresponding colors can be determined by software that computes the evolution of skin color according to personal data and / or general data. For example, if the skin color is measured in winter, a plurality of products can be made, for example four products, a product that corresponds to the skin color as measured, and the other products that corresponds to the colors that are expected in spring, summer and autumn. Above all, any suitable period of time can be used and the use of the stations is by way of example only.

[0117] The software can use, for example, statistical rules of color evolution of different skin categories during the year to make such determinations related to color.

[0118] The software can also take into account personal factors such as, for example, the user's environment, the user's lifestyle, habits, places and dates of vacations and other suitable factors.

[0119] In some embodiments, the software may take into account weather data such as sun exposure.

[0120] The device can, by skin color analysis, either in each use or on a regular basis but not necessarily in each use, select a product and use this product, or it can alert the user that he can load a specific product . You can store in a memory or have access to a memory that allows you to identify the product that matches or is as coincident as possible with the skin color. The device may comprise a timer that provides information related to particular periods of time (for example, calendar dates) and may facilitate the selection of the product to be used.

[0121] The software may comprise a learning system that can allow for improvements in predictions.

[0122] One can preset the color of the composition. One can precisely adjust the color later, using the preselected color and add to that preselected color, additional color components. The first configuration can be done for example, in a store and subsequent configuration can be done, for example, at home, either on the device itself or outside it.

[0123] It may be possible to identify a color that matches the skin color and make or select at least two products that have colors that are different from the current matching color with for example the current skin color between them.

Example 1

Contact application system

[0124] Figure 7 shows an example of an application system 12 of the type that can be found in handpiece 60.

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Sensing system sensitive to an electrical magnitude

[0176] The detection system 12 may be sensitive to electrical conductivity, which can provide information about the hydration state of the skin, for example.

Example 3

Handpiece [0177] The application system is identical to that described with reference to Figure 7, for example. [0178] As shown in Figure 10, a ring 410, for example made of PTFE can be attached to the front

near the applicator element. The ring 410 comes into contact with the skin and allows the moving part 86 of the head

impression pass through its center. [0179] Two electrodes 415, for example flat electrodes made of platinum, for example each having an area of 50 square millimeters (mm2) can be fixed to the front face of ring 415.

[0180] Both 415 electrodes are supplied with current, for example 4 microamps (µA), and the voltage across the terminals is measured with an operational amplifier 417, for example an AD 8675 from the Analog Device provider, connected as a differential amplifier .

[0181] A representative magnitude of conductivity, for example expressed in volts (V) is continuously delivered to converter 208. [0182] When the moving part 86 advances towards the skin, the voltage capture is deactivated.

Base station [0183] The base station is similar to the example shown in Figure 5, except that the adjustment button 220 causes two respective registers Limit and Vaction to vary, either by increasing them or decreasing them.

[0184] The converter 208 converts the voltage data delivered by the electrodes 415 and that comes from the operational amplifier 417 and transforms the analog data representative of the voltage sequentially and at a rate of 100 Hz for example in digital values in the form of numbers that are encoded in 16 bits, for example.

[0185] By way of example, the processing unit 14 executes the following operations:

Vmedido is compared with Vlímite and Vacción.

•

If Measured> Vaction, then the processing unit 14 considers the surface to be too dry and instructs print with a pulse duration d1 of 1/20 s, for example.

•

If Measured> Limit, then the processing unit considers that the skin is moistened near the limit, and instructs the lamp 278 that is present in the handpiece to be operated.

Functioning

[0186] The tank 100 is filled with a composition for application, for example containing 80% water and 20% glycerol, by weight.

[0187] Memory 206 informs processing unit 14 about the Valid and Vacuum values. The user optionally adjusts the values in these registers with the help of button 220.

[0188] The handpiece is carried to the skin. The user can place it where he wishes, but it is advantageous to place it in an area of skin that is poorly hydrated or dry, for example an area that is naturally dry such as the legs, for example, or an area that has been dehydrated by treatment and exposure to low temperatures or the sun, for example the cheeks, arms, belly, mucous membranes such as lips or hair.

[0189] The user can move the handpiece over the skin. As soon as the equipment detects an area beyond the limit, the lamp 278 turns on, indicating that the degree of hydration is close to the limit.

[0190] As soon as the equipment detects an area beyond Vaction, the processing unit sends an instruction to the handpiece to start printing and a current is generated in coil 85a. As a result, the moving part 86, under the effect of the magnetic field of the coil 85a moves towards the skin.

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[0191] Since the machine starts printing only in areas where the conductivity is outside the tolerance, it follows that the print is well located.

[0192] The user can change the care product and switch to compositions that combine a care and makeup product or that only perform makeup.

[0193] The user can also change the values of the Vlímite and Vacción records, without the need to restart the device.

10 Example 4

[0194] The same device is used as in Example 3 except that the device includes a selector 243, as shown in Figure 6, this selector is connected to the processing unit 14. The processing unit is programmed to register corresponding values. and Vacuum depending on the position of selector 243 which is

15 selected by the operator.

[0195] The processing unit causes the Valid and Vacuum values to appear on screen 200.

[0196] A button 244 connected to the processing unit 14 allows the user to register in memory 206 the 20 values set in a "body-Valid-Vaccination" table.

Functioning

[0197] Tank 100 is filled with a treatment composition containing, by way of example: 50% water, 25 20% ethanol, 20% glycerol, 1% silicone amine and 1% DHA, all Percentages are by weight.

[0198] The device turns on. The user adjusts selector 243 on the part of the body to be treated. The memory 206 informs the processing unit 14 about the register and limit values of the correspondence table mentioned above.

[0199] The user makes use of the device as in example 3, except that the device setting is changed as many times as the treatment area changes.

[0200] The user can change the registered Valid and Vacuum values without having to restart the equipment.

35 [0201] As test procedures, the user can adjust the Vaction and Limit values in a personalized way according to the user's tastes, for each treatment area.

[0202] The device can be modified by giving it a system that accepts a plurality of deposits. Each reservoir 40 may contain a care product that corresponds to a specific part of the body.

[0203] Because the device is informed by selector 243 about what part of the body is being treated, it can automatically switch from one deposit to another. Under such circumstances, the handpiece may include not only a system having a plurality of removable tanks, but also a system for the selection of

45 tanks, this system is operated by the processing unit, for example a rotating system.

Example 5

[0204] The same base station can be used as in Example 3. The same handpiece can be used as in Example 3, with the exception of electrode 415, these electrodes are not arranged in the same way.

[0205] As shown in Figure 11, the two electrodes 415 can be placed in a clip 420 to face each other when the clip 420 is closed. The clip 420 can be opened to receive the surface for treatment (eyelashes, hair) and then closed on said surface.

55 [0206] A stop 425 may serve to prevent the two electrodes 415 from touching. The electrodes may be separated by a space of 1 mm, for example.

[0207] Once opened, clip 420 sends a measurement inactivation signal to the base station.

[0208] By way of example, the equipment applies a care composition, based on dissolved silicone (5%) in a volatile solvent (D5 silicone).

Example 6

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[0259] Any type of composition may be placed in reservoir 100, for example a composition that includes one or more compounds to activate blood circulation, one or more temperature generating compounds (calcium salts), one or more irritating compounds ( capsaicin), or one or more exfoliating compounds, for example glycerol acid.

Sensing system sensitive to at least one chemical or biological species

[0260] The handpiece may include an invasive probe. The term "invasive probe" is used to designate a probe that penetrates the skin, in general over a distance that corresponds to the epidermis (ie about one hundred micrometers).

[0261] The probe has to penetrate the skin only intermittently, for example one per second, or when the handpiece moves, for example once every inch.

[0262] The probe may be arranged to measure pH, or humidity, or to perform a chemical measurement such as oxygen content or glucose content.

[0263] The probe can be coupled with a force measurement to inform the team about the hardness of the skin. As an example, this can be done by incorporating a force detector in the mechanical part that holds the probe. When the user presses the device against the skin, the probe contacts the skin. The skin starts resisting penetration. The measured force is relatively high. The fact that the force is measured informs the user, for example by means of an indicator light, that the probe has come into contact with the skin but has not penetrated it. Then, continuing to apply pressure, the user forces the probe to penetrate the skin. This leads to a sudden drop in measured force. The force measurement then informs the user that the penetration has taken place, for example by lighting an indicator light of a different color. The probe can then perform its measurement and the information can be sent, for example after a few seconds, to the equipment.

"Movement" mode

[0264] The handpiece can be placed on the skin and gently moved over the skin.

[0265] The device performs a first measurement using the invasive probe, for example a hydration level measurement.

[0266] If the measurement shows that the level of hydration is low, the handpiece applies a moisturizer over an area that is considerably larger than the area where the measurement was made.

[0267] If the measurement shows that the level of hydration is satisfactory and standard, the handpiece does not apply any composition.

[0268] When the user moves the handpiece, he takes another measurement more along, for example a few millimeters more along. Depending on the level of hydration of the measurement, the handpiece continues to apply moisturizer or stop applying moisturizer.

"Stationary" mode

[0269] The handpiece is placed in a given area.

[0270] The device takes a first measurement of the level of hydration using the invasive probe.

[0271] If the measurement shows that the level of hydration is low, the device applies a moisturizer over an area that is considerably larger than the area where the measurement was made.

[0272] If the measurement shows that the hydration level is within an acceptable range, the device does not apply moisturizer.

[0273] A few tenths of a second later, the device takes another measurement at the same location. Depending on the level of hydration given by the measurement, the device continues or ceases to apply moisturizer. The device stops only when the moisturizer has taken effect and the level of hydration has reached a predefined value.

[0274] The probe can also be used to inject an active agent, either in stationary mode or in moving handpiece mode.

Example 11

Handpiece

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area that is naturally dry, such as the legs, for example, an area that has been dehydrated by treatment,

or an area that has been exposed to low temperatures or the sun, an area that has been subjected to the action of pollution, cheeks, arms, belly, mucous membranes such as lips, for example, or hair .

[0296] When the handpiece does not read any signal that comes from any of the six pH microelectrodes, the device does not make any printing.

[0297] As soon as the device detects an area beyond Plímite, a light comes on indicating that the pH is close to the limit and the handpiece begins to deposit the care product, with a printing duration of 1/20

s.

[0298] Printing can continue in this way for 2 seconds, unless some other information reaches the base station in the meantime. [0299] As soon as the device detects an area beyond Paction, the base station instructs the handpiece

to execute the printing, for example with a duration of 1/5 s, to deposit the care product.

[0300] Printing can continue in this way for 3 seconds, unless some other information reaches the fixed part in the meantime. [0301] If the device detects an area beyond Plímite, the base station instructs the handpiece not to perform

the impression.

[0302] The user can substitute the care product and switch to compositions that associate makeup with a care product, or that comprise only makeup. [0303] The user can also change the values of the Limit and Paction records, and this can be done without need

Restart the device. Example 12 [0304] Unlike example 11, the user begins by placing an aqueous citrate buffer solution (pH 4.8) in

the skin, for example a minute before. Variants Non-invasive chemical detection probes [0305] pH measurements can be made in contact with the skin. [0306] It is possible to measure the following gases: CO2, NO, CO, NO2, for example, depending on whether you want to reduce the

biological activity or the presence of pollution.

[0307] It is possible to detect liquid compounds having a boiling temperature close to room temperature, for example solvents and fragrance residues, endogenous odor molecules, or exogenous odor molecules. [0308] By way of example, it is possible to use detectors of the type used in artificial noses, such as compounds

semiconductors that are sensitive to the presence of certain volatile compounds. [0309] It is possible to detect fatty acids, other fatty compounds, to detect DNA, amino acids and / or proteins or salts.

Example 13

[0310] Unlike example 11, the band 600 contains several different probes, for example to measure pH, to ensure calcium content, chlorine content or sodium content.

Mechanical detection system [0311] It is possible to use at least one mechanical sensor, for example to determine the force that opposes the skin either to be penetrated, to be rubbed or to be rotated.

[0312] As an example, it is possible to use force sensors from the Honeywell supplier. [0313] It is also possible to use multipoint sensors. Such sensors are in the form of a pulse matrix. The electronic sensor system provides information on the pressure as received by each strand. The strand can be

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Claims (1)

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