626 results about "Color mixing" patented technology

The invention discloses a digital human rendering method based on Gaussian splashing and multi-scale characteristic field distillation, and belongs to the field of three-dimensional human body digital reconstruction. According to the method, feature extraction is carried out through a Vision Transformer encoder, based on an SMPL model, through a cross-modal parameter estimation module and dynamic human body modeling of three-dimensional Gaussian splashing and semantic feature rendering, three-dimensional Gaussian is projected to a two-dimensional image plane to calculate a covariance matrix and color mixing, and after a rendered color image and an initial feature field image are output, a three-dimensional image is obtained. A student feature map is obtained through a convolution acceleration module, a teacher feature map is obtained after feature extraction is carried out through a two-dimensional basic model, the constructed model is trained, and optimization training is completed through comprehensive total loss function calculation; according to the method, the problems of fuzzy semantics, detail missing, low rendering efficiency and inaccurate human body-scene separation in the existing method are effectively solved, so that more efficient, fine and robust monocular or multi-view human body three-dimensional reconstruction is realized.

The invention provides a color calibration processing method and electronic equipment. The method comprises the following steps: acquiring primary color information of light-emitting equipment; determining the theoretical brightness of each channel corresponding to the target color; determining the current duty ratio of each channel under the current junction temperature according to the current junction temperature, the reference junction temperature brightness of each channel and the theoretical brightness of each channel corresponding to the target color, and obtaining a color mixing output result; determining new reference junction temperature brightness of each channel and junction temperature offset of each channel; obtaining a new maximum brightness and a new current duty ratio of each channel under the current junction temperature, and lightening the light-emitting device again based on each new current duty ratio to obtain a new color mixing output result; and if the new color mixing output result meets the preset error range, taking the junction temperature offset of each channel as the calibration junction temperature offset of each channel of the light-emitting equipment, and taking the new reference junction temperature brightness of each channel as the calibration reference junction temperature brightness of each channel. And the color mixing precision of the light-emitting equipment in the whole working temperature range is improved.

The invention relates to the field of image processing, and discloses a figure image optimization method based on green screen image matting, which is used for carrying out optimization processing on a figure image. The figure image optimization method based on green screen image matting comprises the steps of performing fractional order differential transformation and other processing on an input green screen figure image, constructing a continuous chromaticity representation space, generating a chromaticity gradient field and multi-resolution chromaticity representation, establishing a geometric topology constraint model according to chromaticity information, generating an initial transparency field, and performing collaborative optimization. Optimizing a boundary curve, generating an accurate boundary contour, establishing a color mixing model, realizing natural transition between a foreground and a background, generating an optimized image, performing subsequent processing such as material optical attribute analysis and the like, and finally outputting an image completely fused with a background environment. According to the method, the foreground can be accurately separated, the edge can be optimized, natural transition and material simulation can be realized, and finally a high-quality figure image which is seamlessly fused with the background and has a physical reality sense is generated.

The invention discloses a method for carrying out layered color mixing printing on plane color content by using an FDM printer based on a multilayer color reverse solution algorithm, and belongs to the technical field of 3D printing, and the method comprises the following steps: step 1, carrying out vectorization conversion on color information of an input image to obtain a preprocessed image with a clear contour and pure color; and 2, building a multilayer color reverse solving system based on an improved Kubelka-Munk model, reversely and accurately calculating color values of all layers, and ensuring that the color of each layer strictly conforms to the actual color generation capability range of the consumable. And step 3, carrying out layer-by-layer printing on the layering result according to a specific thickness and sequence, and finally presenting the original picture color on the contact surface of the printed piece and the hot plate. The method has the advantages that patterns with richer colors can be presented on the surface layer of a printed piece, and the limitation that the color of a printing material is limited in presentation in FDM multi-color printing is improved; meanwhile, under the condition that the printing process and hardware iteration cost are not increased, richer color selection is achieved.

The utility model provides a color master barrel righting and positioning device and color matching equipment, and belongs to the technical field of batching equipment. The color master barrel righting and positioning device is applied to color mixing equipment and comprises a righting gripper assembly, a color master barrel righting and positioning assembly and a color master barrel righting and positioning assembly, the righting gripper assembly comprises a side wall and a gripper part fixed to the side wall, and a slope angle opening is formed in the end, away from the side wall, of the gripper part; the driving part is connected with the side wall and used for driving the side wall to stretch out and retract in the first direction, and when the side wall stretches out, the grabbing part abuts against a handle of a color master barrel located at the color master barrel in-place position on the color mixing equipment. And the color master barrel is straightened to a preset liquid outlet position under the limitation of a space formed by the slope angle opening. The color master barrel can be accurately straightened to the preset liquid outlet position under the condition that the stopping precision of the color master barrel is insufficient.

A compensation type color mixing system comprises a light source, a light through hole formed in a main light path, three single-color annular light filters arranged on a light emitting light path in parallel at intervals and a driving device used for driving the light filters to rotate, and the three light filters are the C light filter, the M light filter and the Y light filter respectively. A light-transmitting area and a color area which are annularly arranged and connected end to end are arranged on the optical filter; the light source is characterized by further comprising at least one color complementing piece which is arranged on a light emitting path, has the same color type as the light filter and is arranged adjacent to the light filter in parallel at intervals; the shape, the size and the color area shape and the size of the light filter are the same as those of the color complementing piece, the linear gradual change direction of the color area of the light filter is opposite to the light emitting direction of the color complementing piece, and part of the color area of the color complementing piece is selectively and statically arranged on a main light path.

The present application relates to the technical field of textile design, and particularly relates to a method for improving fabric image color distortion by superimposing and developing color of sanding, which comprises the following steps: (1) CMYK four-color yarn design; (2) jacquard CAD design; (3) weaving of grey fabric; (4) dyeing and finishing of the grey fabric; the dyeing and finishing of the grey fabric comprises sanding after light bleaching and fading treatment of the grey fabric. The present application adopts the design method of superimposing and developing color of color image fabric, the color developing mode of color mixing of jacquard CAD technology, and designs through the spinning form of colored weft yarn, jacquard CAD and dyeing and finishing, produces the effect of mutual color bleeding and color mixing of color materials of CMYK four-color yarn through fading treatment, and then carries out sanding treatment, so that the fine and dense fluff of the color yarn is superimposed with the effects of color transmission and improvement of complete covering, the color yarn is subjected to color transmission and superimposed color mixing again, the color is softer and more real by adopting the mode similar to the superimposition of four plates of CMYK color printing.

The invention discloses a double-color automobile decorating part and a forming mold and method thereof, and relates to the technical field of automobile decorating part forming, the double-color automobile decorating part comprises a fixed mold, a movable mold, multiple mold core assemblies, a first mold cavity, a second mold cavity, a first injection molding hole and a second injection molding hole, the movable mold is arranged above the fixed mold, and the multiple mold core assemblies are installed at the top of the fixed mold; the first mold cavity is installed among the multiple mold core assemblies, the multiple second mold cavities are formed in the bottom of the movable mold, the first injection molding hole is formed in the middle of the movable mold, and the multiple second injection molding holes are formed in the top of the movable mold in an annular array mode. The arrangement mode that the fixed mold, the movable mold, the mold core assembly, the first mold cavity and the second mold cavity are matched is utilized, the mold core assembly adopts the multi-mold-core body layout, melt flow optimization is achieved through connecting holes, it is ensured that materials are evenly distributed during double-color injection molding, the sealing assembly adopts an electric telescopic rod to drive a sealing plate, and the sealing effect is good. And the runner is automatically closed or opened during injection molding color switching, so that color mixing is avoided, and melt leakage is prevented.

A color mixing circuit for light sources comprising a power supply module, a first light source module, a second light source module, a first resistance module, a second resistance module, and a circuit gating module; the first light source module is respectively connected to the power supply module and the circuit gating module; the first light source module is further connected to the circuit gating module through the first resistance module; the second light source module is respectively connected with the power supply module and the circuit gating module; the second light source module is further connected to the circuit gating module through the second resistance module; the circuit gating module is also connected to the power supply module; the first light source module and the second light source module are configured to emit light.

The invention relates to the field of digital twinning simulation, and particularly discloses a multi-material color mixing process digital twinning simulation platform, which is characterized in that geometric models, material attributes and rated process parameters are converted into basic physical simulation data by constructing the multi-material color mixing process digital twinning simulation platform; and acquiring real-time process parameters by means of an IoT interface to determine a parameter drift vector. Meanwhile, the parameter drift features and the color distribution features are processed by using a lightweight machine learning model, and a chromatic aberration correction graph is generated to dynamically correct a color prediction result. Through the mode, color deviation caused by parameter drift can be dynamically corrected, and accurate simulation of dynamic evolution of the multi-material color mixing process is realized, so that the color mixing process design and optimization efficiency is improved, the time and material cost is reduced, and the rapid switching requirement in a multi-variety small-batch production scene is met.

The utility model discloses a color mixing structure of a mixed double-color injection machine, which comprises a confluence flange, and a first flow channel and a second flow channel which are inclined are arranged in the confluence flange; the color mixing connector is arranged on the upper side of the confluence flange through a fastener, a first color mixing connector flow channel and a second color mixing connector flow channel are arranged at the bottom of the color mixing connector, a flow dividing valve element is inserted in the color mixing connector, a first flow dividing valve element flow channel and a second flow dividing valve element flow channel are arranged in the flow dividing valve element, and the first flow dividing valve element flow channel and the second flow dividing valve element flow channel are communicated with the first flow dividing valve element flow channel. The upper portion of the flow dividing valve element is sleeved with a color mixing head, a vertical first color mixing head runner is arranged in the middle of the color mixing head, and a plurality of second color mixing head runners are arranged on the periphery of the first color mixing head runner in the circumferential direction. The utility model can solve the problems of low production efficiency and poor qualification rate caused by poor color mixing effect and unsymmetrical transition color mixing position connection when the existing injection machine is used for producing color mixing products.

A liquid crystal display device includes a liquid crystal layer disposed between first a second substrates, the liquid crystal layer including a plurality of liquid crystal molecules, a plurality of pixel electrodes and a plurality of data lines disposed over the first substrate and configured to control the orientation of the liquid crystal molecules to modulate light, a passivation layer formed over the first substrate, the passivation layer including a plurality of first filled elongated contact trenches electrically connecting a plurality of the pixel electrodes and a plurality of second filled elongated contact trenches electrically connecting a plurality of the data lines, a light shielding layer disposed over abutting portions of adjacent color filters of respective sub-pixels, the light shielding layer configured to inhibit color mixing and block cross-talk between the adjacent sub-pixels, and a backlight system configured to provide illumination through the liquid crystal layer.

Some implementations pertain to a transflective display device comprising a display surface, an optical path, and / or other components. The optical path may spatially modulate light emitted from a primary light source and direct it to the display surface, generating a display of visual information. The optical path may include a reflective spatial light modulator and a set of Light Emitting Diodes. The modulator may receive light from the primary light source and selectively reflect it toward the display surface. The Light Emitting Diodes may emit light directed to the backside of the modulator, including white light and light of a first color. Some implementations may include drivers to control the intensity of the light emitted by the Light Emitting Diodes, dictating the tone of the light transmitted through the modulator. This configuration may facilitate the creation of a uniform, high-quality display.

The invention discloses a TBR implementation method of a desktop GPU for mobile 3D application optimization, which comprises the following steps: defining block metadata of screen blocks in a Mesa driver, establishing a block manager, when a mobile application context is detected, acquiring GPU core parameters by the block manager, calculating the size of a basic block, dividing a screen into areas corresponding to shader arrays in number, and storing the areas in a memory; establishing a mapping table of a basic block, a computing unit and an L2 cache slice, generating a resource hash table, analyzing block metadata and the mapping table after whole frame rendering is started, determining a hardware channel according to the mapping table, scheduling rendering tasks according to priorities, and configuring a GPU rendering state. Then executing a vertex shader, rasterization, a fragment shader, depth testing and color mixing to complete block rendering, updating block metadata, merging intermediate data into a final frame buffer according to geometric information after rendering of all basic blocks is completed, and submitting the final frame buffer to a window system to complete single-frame display. And the operation efficiency of the mobile operation system and the mobile terminal 3D application on the desktop platform is optimized.

This application provides a display panel and a display device. The display panel includes a light-emitting device layer and a color filter layer. The light-emitting device layer includes light-emitting devices. By stacking three sub-filter layers of different colors in sequence to form the color filter layer, light leakage can be prevented and the reflectivity of the display panel can be reduced. By setting openings in the portions of the two sub-filter layers with colors different from the light-emitting devices corresponding to the light-emitting devices, the light emitted by the light-emitting devices can pass through the openings, thereby ensuring the luminous efficiency and color purity of the display panel. The sub-filter layers with colors different from the light-emitting devices around the openings can absorb some of the large-angle light emitted by the light-emitting devices. This not only avoids lateral light leakage between adjacent light-emitting devices that leads to color mixing, but also reduces the attenuation of the light emitted by the light-emitting devices at large viewing angles, thereby improving the color shift of the display panel at large viewing angles.

The utility model provides a rotary drum type color mixing device for design, which comprises a base, a cylinder fixedly mounted on the base, six layers of sliding rails fixedly mounted on the outer wall of the cylinder, a sliding ring slidably mounted on the sliding rails, three pigment trays fixedly connected to the peripheral side of the sliding ring, and a color mixing tank and a cleaning tank arranged on the base around the cylinder, the top end of the cylinder is fixedly provided with a top plate, and the periphery of the top plate is fixedly provided with sector plates. The sliding ring is rotatably connected outside the cylinder, the paint plates are fixedly connected outside the sliding ring, the paint plates are installed in a stacked mode, the paint plates on the upper layer can seal the paint plates on the lower layer, the lifting rod is arranged in the cylinder, and the lifting rod ascends and descends to drive the limiting ball to move through the cross rod, so that limiting of the sliding ring is relieved, and the sliding ring on the upper layer is rotated. The sliding rings and the pigment plates are fixedly connected through the countersunk bolts, so that disassembly, assembly, cleaning or maintenance and replacement are facilitated.

The invention discloses a machining mold and a forming method of an automobile cold and warm cup stand part, the machining mold comprises a bottom plate, a bottom mold, a first front mold and a second front mold, the bottom mold comprises a rear mold base, a rear mold core, a rear mold plate, an ejector plate and a rear mold base plate, and the ejector plate is movably arranged relative to the rear mold core in the mold closing and splitting direction; the second front mold and the second mold core are provided with movable connecting rods for mold closing and opening linkage; the clearance assembly drives a connecting arm to move relative to the second mold core through an electric cylinder unit to limit the second-section displacement of the second mold core in mold closing; according to the mold, two-section displacement is generated in the injection molding process, the color mixing influence on double-color injection molding is reduced, a manual cutting board is arranged to conveniently control opening and closing of a runner, participation of a power unit is reduced through an arranged core-pulling linkage structure, installation of a control and feedback switch is reduced, the overall complexity of the mold is simplified, and the production efficiency is improved. The mold is convenient to use.

The application discloses a kind of short-range extrusion device and working method for realizing multicolor mixing, solve the printing precision of prior art long-range feeding printing device, the movement precision of short-range feeding printing device is low, with the beneficial effect of improving printing precision, specific scheme is as follows: a kind of short-range extrusion device for realizing multicolor mixing, including driving module, feeding extrusion module, color mixing proportion control module and mixed extrusion module connected in sequence, power assembly is provided with multiple output shafts, each output shaft is respectively matched with corresponding feeding component, feeding extrusion module includes feeding fixed seat, feeding fixed seat supports tensioning mechanism, the clamping force between feeding component and tensioning mechanism is adjustable, multiple coaxial baffles are arranged between color mixing proportion control module and mixed extrusion module, the baffle is provided with the shielding groove that can be communicated with melt cavity, the baffle can be rotated so that the shielding groove shields part of melt cavity to realize flow regulation.

The dye color mixing system comprises a support, a dye color mixing barrel is fixed to the support, a barrel cover is installed on the dye color mixing barrel, an adding opening is formed in the barrel cover, a discharging opening is formed in the bottom of the dye color mixing barrel, a discharging pipe is fixedly connected to the discharging opening, and a dye color mixing barrel is fixedly connected to the discharging pipe. A valve is fixed to the discharging pipe, a stirring mechanism used for stirring dye in the dye color mixing barrel is further arranged on the barrel cover, an upper mounting plate and a lower mounting plate which are arranged up and down are further arranged on the side portion of the support, the upper mounting plate and the lower mounting plate are connected through a stand column, and a guide sleeve is slidably connected to the stand column; a linkage plate is fixed between the guide sleeves, the linkage plate is fixedly connected with the storage table through a connecting frame, and the linkage plate is further connected with a driving assembly capable of enabling the linkage plate to move up and down; and methods of use thereof.

The present invention provides a multi-color light-emitting system driving method and apparatus, and a backlight system. The multi-color light-emitting system driving method comprises: respectively performing centralized adjustment on the wavelengths of a plurality of light-emitting elements of each light-emitting color, so that the wavelengths of the plurality of light-emitting elements of each light-emitting color tend to be consistent; respectively performing consistency adjustment on the light-emitting brightness of the plurality of light-emitting elements of each light-emitting color, so that the light-emitting brightness of the plurality of light-emitting elements of each light-emitting color tends to be consistent; and mixing a plurality of light-emitting colors of light-emitting units according to a component ratio required by a target color temperature. In the technical solution of the present invention, by means of centralized adjustment of the wavelengths of the plurality of light-emitting elements of each light-emitting color, the light-emitting consistency is improved; furthermore, by means of brightness consistency adjustment, the uniformity is improved; the centralized adjustment of the wavelengths does not affect the inherent color gamut of the light-emitting elements, and the color gamut obtained after color mixing is wider; and color mixing according to the component ratio of the target color temperature achieves the maximum light-emitting brightness at a certain color temperature.

The embodiment of the invention provides a display panel and a display device. According to the display panel, the first groove is formed in the non-pixel area of the insulating layer, the black matrix layer is arranged in the first groove, the second groove is formed in the side, away from the insulating layer, of the black matrix layer, and the color resistance layer is arranged in the second groove, so that when the color resistance is formed, even if the color resistance overflows, the color resistance can overflow into the second groove, and the color resistance is prevented from overflowing. Therefore, the risk that color mixing occurs when the color resistors are formed through ink-jet printing is reduced, the thickness of the black matrix layer does not need to be reduced, the reflectivity of the display panel is prevented from being increased, and the risk that the ink forming one color resistor overflows to the setting areas of the other color resistors is low, so that the display effect is improved. The selection range of the contact angle between the color resistor and the black matrix layer is wide, the development difficulty of a color resistor material is reduced, the middle area of the color resistor is prevented from protruding too high, and the optical performance of the display panel is improved.

The present disclosure provides a photodetection element and an electronic device capable of suppressing color mixing.In order to solve the above problems, according to the present disclosure, there is provided a photodetection element including: a photoelectric conversion layer that generates a signal charge in response to incidence of light; and a light shielding structure having a wall shape and penetrating the photoelectric conversion layer, the light shielding structure having an opening on a side opposite to a light incident side and formed in a through hole having a groove shape and having a closed region on the light incident side.

The invention discloses an intelligent washing machine with a clothes color crossing prevention visual identification function, which comprises an inner drum rotating module used for controlling an inner drum to rotate; the visual identification module is used for collecting a visual image of the clothes in the inner drum and identifying the color and the texture of the clothes; the analysis and judgment module is used for analyzing and judging the color and texture of the collected clothes and judging whether the clothes have the risk of color crossing or not; and the alarm module is used for performing early warning on the color crossing condition, and a user decides whether to take out the easy-to-dye clothes or not according to the early warning. The clothes texture visual identification module is arranged in the washing machine cylinder, and after a user starts the washing machine, the clothes texture visual identification module rotates and identifies the color texture of clothes; the recognized clothes color and texture data are analyzed and correspondingly processed; and when the color crossing condition possibly occurs, the user is reminded to make corresponding judgment through display and buzzing.

The invention discloses a method for carrying out layered color mixing printing on plane color content by using an FDM printer based on a multilayer color reverse solution algorithm, and belongs to the technical field of 3D printing, and the method comprises the following steps: step 1, carrying out vectorization conversion on color information of an input image to obtain a preprocessed image with a clear contour and pure color; and 2, building a multilayer color reverse solving system based on an improved Kubelka-Munk model, reversely and accurately calculating color values of all layers, and ensuring that the color of each layer strictly conforms to the actual color generation capability range of the consumable. And step 3, carrying out layer-by-layer printing on the layering result according to a specific thickness and sequence, and finally presenting the original picture color on the contact surface of the printed piece and the hot plate. The method has the advantages that patterns with richer colors can be presented on the surface layer of a printed piece, and the limitation that the color of a printing material is limited in presentation in FDM multi-color printing is improved; meanwhile, under the condition that the printing process and hardware iteration cost are not increased, richer color selection is achieved.

The invention belongs to the field of pigments, and particularly relates to a preparation method and a production device of propylene painting pigments. The method comprises the following steps: step 1, preparing a thickening pre-activation complexing solution, wherein the thickening pre-activation complexing solution comprises 60-80 parts by weight of deionized water, 5-8 parts by weight of a modified polyurethane thickening agent, 1-2 parts by weight of a pH regulator, 3-5 parts by weight of an anti-freezing agent and 6-8 parts by weight of a colloid protective agent; 2, preparing a Q pulp base material, namely reacting 20-25 parts of the thickening pre-activation solution with 70-75 parts of an acrylic emulsion, 8-10 parts of a coalescing agent, 4-6 parts of a pH regulator and 0.3-0.5 part of a preservative to form the Q pulp base material; step three, color mixing: color paste is added into the Q paste base material and stirred to form a pigment finished product, and the color paste comprises 10-15 parts of toner, 2-3 parts of a dispersing agent and 3.5-5.5 parts of a humectant; the prepared pigment is accurate in proportion, standard in preparation and consistent in standard, and has the characteristics of simple process, convenience in control and automatic continuous production.

The invention provides a water-based ultra-matte colorful continuous-phase emulsion and a preparation method and application thereof.The water-based ultra-matte colorful continuous-phase emulsion is prepared from acrylic resin emulsion, auxiliaries, matte auxiliaries, a modified compatilizer and water, the modified compatilizer is prepared by reacting hydroxylated bentonite with KH560, then adding the modified compatilizer into the acrylic resin emulsion, and stirring to obtain the water-based ultra-matte colorful continuous-phase emulsion. And respectively reacting with polyhydroxyalkanoate and polyacrylic acid to obtain the product. The modified compatilizer has a macromolecular network structure rich in ester groups, can prevent color spots from being burnt, enhances the compatibility of a continuous phase, and achieves the effect of being suitable for water-in-water and sand-in-water systems at the same time. Meanwhile, by grafting with polyacrylic acid, carboxyl is introduced into the modified compatilizer, interaction with other components can be generated, and the water resistance, weather resistance and other properties of the product are improved. In addition, all the components are synergistic, the compatibility of the components is improved through the modified compatilizer, and the extinction unit is uniformly dispersed in the emulsion, so that the continuous-phase gloss can reach ultra-matte finally.

The utility model relates to the field of iron oxide pigment processing, and discloses an iron oxide pigment color mixing device which comprises a supporting frame, a mixing barrel is fixedly connected to the outer wall of the top end of the supporting frame, a support is fixedly connected to the top end of the outer wall of the mixing barrel, and a motor a is fixedly connected to the top end of the end, away from the mixing barrel, of the support. Quantitative mechanisms are arranged on the two sides of the mixing barrel, each quantitative mechanism comprises a quantitative barrel, the inner wall of the top end of each quantitative barrel penetrates through and is slidably connected with an L-shaped rod, the outer wall of the top end of each quantitative barrel is fixedly connected with a connecting block, and the inner wall of each connecting block is elastically connected with an inserting block through a limiting spring. According to the utility model, the motor b is used for driving the semicircular plate to rotate and the L-shaped rod is used for driving the inclined plate to move up and down, so that the volume of the cavity in the quantifying barrel is accurately adjusted, the accurate quantification of the pigment base stock is realized, the position after adjustment can be fixed through the insertion of the insertion block and the through hole in the L-shaped rod, and the quantifying stability and the color mixing accuracy are ensured.

According to the energy-saving and noise-reducing printing head with the weak electromagnetic eddy current, a unique printing needle arrangement method is adopted, 24 needles are asymmetrically grouped according to 8 needles and 16 needles, and through longitudinal offset of odd and even groups and precise transverse staggered layout, it is ensured that any two needles are in different columns, and the transverse distance is integer multiples of the non-standard dot distance; therefore, single-needle time sequence striking is achieved, noise superposition is avoided fundamentally, and peak current is reduced. In addition, an ingenious guide slide structure is further arranged to solve the problem of high-density needle threading, a cross groove is formed in a magnetic pole to restrain eddy current and reduce heating, and an arc chamfer is arranged at a needle tip to greatly reduce the current value. The printing head has the remarkable noise reduction and energy saving effects, the printing quality and the production efficiency are improved, and the multiple problems that in the prior art, printing noise is large, energy consumption is high, and color mixing is prone to occurring in double-color printing are effectively solved.

Provided is a light receiving element capable of enhancing accuracy of measurement of color mixing components contained in output signals of light shielding pixels located around a light receiving pixel. A peripheral pixel region has a specific pixel group including a light receiving pixel and light shielding pixels surrounding the light receiving pixel. A first conductivity type region corresponding to the light receiving pixel and the light shielding pixels of the specific pixel group is made lower in concentration of a first conductivity type impurity than a first conductivity type region corresponding to an effective pixel located in an effective pixel region. Since the concentration of the first conductivity type impurity of the specific pixel group (the light receiving pixel and the light shielding pixels) is low, it is possible to weaken a pn junction strength and suppress dark current in the light receiving pixel and the light shielding pixels. It is therefore possible to reduce noise contained in the output signals of the light shielding pixels and enhance the accuracy of measurement of the color mixing components included in the output signals of the light shielding pixels.

The utility model provides a packaging box printing ink color matching device which comprises a color matching cylinder. The mixing groove is formed in the middle of the top of the color mixing cylinder, a fixing plate is fixedly installed in the middle of the top of the color mixing cylinder, and a stirring device is fixedly installed in the middle of the top of the fixing plate and comprises a servo motor, a rotating stick and a stirring plate; the pushing device is fixedly installed on the top of one side of the outer surface of the color mixing barrel and comprises a fixing block, a sliding rod, a spring and a check block. According to the packaging box printing ink color matching device, through mutual cooperation of the pushing device and the cleaning device, an operator can conveniently hold the connecting rod to push the scraping plate to scrape residual ink on the surface from top to bottom on the inner wall of the mixing groove, and the device is simple in structure, high in practicability and high in practicability. And the cleaning device can automatically return after scraping residual ink on the surface of the inner wall, so that an operator can conveniently clean the color mixing cylinder, the labor intensity of the operator is reduced, and the practicability of the device is improved.