157 results about "Image density" patented technology

The invention discloses an overhead distribution line topology mapping method and system based on unmanned aerial vehicle inspection image density clustering, and the method comprises the steps: shooting a visible light image of an overhead distribution line through an unmanned aerial vehicle; extracting image feature information of the visible light image, including detecting tower equipment and defect hidden dangers of the visible light image, and extracting coordinate position information of the visible light image; based on the image feature information of the visible light image, determining a density center point and a neighborhood point of the visible light image, and constructing a density cluster of spatial distribution of the visible light image; based on density clustering of spatial distribution of visible light images, mapping of overhead distribution line equipment and defects and a line topological structure is realized, and latest inspection data is obtained; according to the method, an original standing book is compared with latest inspection data, coordinate position deviation and equipment corresponding conditions are calculated, the original standing book is compared with a newly constructed standing book according to the type and number of equipment, and inconsistency is recognized and reminded.

The invention relates to the field of semiconductor processing, in particular to a mask process and optical proximity joint correction method, device and equipment. Inputting the target pattern into a pre-trained joint correction model, enabling the joint correction model to take the target pattern as an initial current mask pattern, and segmenting the edge of an optical proximity correction target pattern in the current mask pattern to obtain a plurality of edge sections, performing iterative adjustment on the position of the edge section according to a preset mask image density function, a first linear coefficient corresponding to the mask image density function, a preset photoresist image item and a second linear coefficient corresponding to the photoresist image item; the edge placement errors of all the edge sections of the current mask pattern are smaller than a preset qualified threshold value; and outputting the current mask pattern of which the edge placement error of the edge section is smaller than a preset qualified threshold value as a corrected mask pattern. According to the invention, the process period and cost are reduced.

An x-ray apparatus and method can improve x-ray imaging in a variety of ways. For example, the improve x-ray apparatus can reduce scatter from x-ray images acquired by two-dimensional detectors. An improved 2D x-ray apparatus can provide 3D imaging for medical and / or industrial applications. An improved 2D x-ray apparatus and method can produce separate material imaging, and composition analysis for characterization and correlation of image, densitometry, and composition information of individual component or individual material within a single subject. Non-rotational 3D microscopy, combining 2D or 3D full field x-ray imaging and high resolution 2D or 3D x-ray microscopy or spectral absorptiometry and spectroscopy can achieve a higher resolution and wider field of view in x-ray imaging and quantitative analysis in 3D and real time. The x-ray apparatus can improve tracking and / or surgical guidance in time and / or space.

To provide a white ink composition for water-based inkjet printing that achieves high white image density in a printed object and exhibits high redispersibility after pigment settling, storage stability, and discharge stability.SOLUTION: There is provided a white ink composition for water-based inkjet printing that contains: a titanium oxide pigment; a polymer dispersing agent including an anionic group-containing resin; a surfactant; and water. The ink composition contains 4.0 pts.mass to 16.0 pts.mass of the titanium oxide pigment relative to 100 pts.mass of the ink composition. The titanium oxide pigment includes titanium oxide and a surface treatment agent for treating the surface of the titanium oxide. The titanium oxide pigment satisfies the condition that the ratio of the mass of the titanium oxide to the total mass of the surface treatment agent is 90:10 to 80:20. The weight average molecular weight of the anionic group-containing resin is 5,000 or more and 50,000 or less. The anionic group-containing resin content is 7.0 pts.mass or more relative to 100 pts.mass of the titanium oxide pigment.SELECTED DRAWING: None

An x-ray apparatus and method can improve x-ray imaging in a variety of ways. For example, the improve x-ray apparatus can reduce scatter from x-ray images acquired by two-dimensional detectors. An improved 2D x-ray apparatus can provide 3D imaging for medical and / or industrial applications. An improved 2D x-ray apparatus and method can produce separate material imaging, and composition analysis for characterization and correlation of image, densitometry, and composition information of individual component or individual material within a single subject. Non-rotational 3D microscopy, combining 2D or 3D full field x-ray imaging and high resolution 2D or 3D x-ray microscopy or spectral absorptiometry and spectroscopy can achieve a higher resolution and wider field of view in x-ray imaging and quantitative analysis in 3D and real time. The x-ray apparatus can improve tracking and / or surgical guidance in time and / or space.

The invention relates to the technical field of intelligent control, in particular to a production line intelligent scheduling method for quinoa processing, and the method comprises the steps: collecting real-time data; extracting image features; determining a first temporary conveyor belt; determining a second temporary conveyor belt; abnormal conveyor belt judgment; adjusting parameters; and performing priority scheduling. According to the invention, through real-time acquisition and comprehensive analysis of parameters such as material images, load weight and gas particle concentration, tight logic relevance among the real-time parameters is embodied. The material image change rate is combined with the load weight, so that the abnormal state of the conveying belt can be accurately recognized; and the gas particle concentration is combined with the image density, so that the real-time monitoring on abnormal conditions is further enhanced. Through collaborative analysis and dynamic adjustment of the parameters, occurrence of an abnormal conveyor belt can be accurately judged, and the problems of poor scheduling efficiency and low emergency response speed during production due to excessive dependence on static data and artificial experience are effectively solved.

To provide an electrophotographic photoreceptor, an image forming apparatus, and an image forming method that can improve image quality and prevent a change in image density in continuous printing.SOLUTION: An electrophotographic photoreceptor of the present invention is an electrophotographic photoreceptor in which at least a photosensitive layer and a surface protective layer are sequentially laminated on a conductive substrate. The surface protective layer contains metallic oxide fine particles containing Ti atoms and second atoms that are metal atoms or semi-metal atoms other than the Ti atoms. When the average value of the equivalent circle diameters of cross sections of the metallic oxide fine particles appearing on a cross section of the surface protective layer is defined as A, and the standard deviation value of the equivalent circle diameters as B, a coefficient of variation (B / A) is within a range of 0.12-0.35.SELECTED DRAWING: Figure 1

The invention provides a cerebral hemorrhage accurate drainage method and system based on image density analysis, and relates to the technical field of medical image processing and cerebral hemorrhage drainage, and the method comprises the steps: obtaining a head CT image, generating a multi-level three-dimensional density distribution diagram through a density analysis model, extracting a hematoma core region, and building a three-dimensional model; layering the hematoma core area, and determining an optimal drainage point and path; and a multi-channel intelligent drainage system is adopted for hematoma drainage, the drainage speed is adjusted according to the density sublayer parameters, hematoma volume and density distribution changes are monitored in real time, and when the current volume parameter is reduced to be below a preset volume value and the density distribution of each density sublayer tends to be uniform, accurate hematoma drainage is completed. According to the method, accurate positioning and personalized drainage of cerebral hemorrhage can be realized, and the treatment effect is improved.

To provide an image forming apparatus that can check a state of an odor detection unit and appropriately correct a detection result in a configuration in which various types of control are performed according to the detection result of the odor detection unit.SOLUTION: An image forming apparatus comprises an image forming unit, a fixing unit, an odor detection unit, and a control unit. The odor detection unit outputs an output value according to the strength of odor generated from a recording medium passing through the fixing unit. The control unit executes predetermined odor reduction processing when determining that odor with a standard value or more is generated on the basis of detection output from the odor detection unit. The control unit acquires an initial output correlation that is a relation between a change in the output value from the odor detection unit and at least one of a change in image density and a change in a fixing temperature of the fixing unit, at the start of use of the odor detection unit, and a post-endurance output correlation that is a relation between a change in the output value and at least one of a change in image density and a change in the fixing temperature at predetermined timing after the start of use of the odor detection unit, and corrects a detection output value from the odor detection unit.SELECTED DRAWING: Figure 8

The application discloses a liner paper fixed-point cutting control method and device and electronic equipment. The method comprises the following steps: when a printing instruction is detected, acquiring parameter information of current cigarette production, and identifying a printing pattern on the liner paper; determining a display center of the printing pattern based on image density of each judgment area in the printing pattern; determining a current cutting distance of the liner paper based on the display center and the parameter information, and controlling a cutting object to perform a cutting action based on the current cutting distance. The application can identify the printing image on the liner paper, and determine the current cutting distance at which the cutting object starts to perform the cutting action by determining the display center of the printing pattern, so that no matter what kind of pattern is, the part of the printing pattern on the liner paper which needs to be mainly displayed is in the central part of the cigarette package after packaging according to the cutting trace, and the automatic production demand of the special cigarette is met.

To suppress an influence of a change in an imaging condition from a change in image density in a time direction of an X-ray image by a contrast medium.SOLUTION: An X-ray diagnostic apparatus includes an X-ray tube, an X-ray detector, an image generation part, an acquisition part, and a correction part. The X-ray tube irradiates a subject injected with a contrast medium with an X-ray. The X-ray detector detects the X-ray emitted from the X-ray tube and penetrating the subject. The image generation part generates an X-ray image of the subject on the basis of the output of the X-ray detector. The acquisition part acquires an index on the brightness of the X-ray image. The correction part corrects a brightness value of the X-ray image for the latest index on the basis of a reference index before injection of the contrast medium and the latest index after the injection of the contrast medium is started of the acquired indexes.SELECTED DRAWING: Figure 1

The present invention provides a toner containing colored resin particles of a binder resin and a colorant and an external additive, the binder resin containing a carboxyl group-containing acrylate resin, and the external additive containing carboxyl group-containing acrylate polymer modified metal particles, and a method for preparing the same. By using the specific external additive and the adhesive resin, the prepared toner can still keep stable triboelectrification performance in a high-humidity environment, so that the problems of uneven image concentration and increase of bottom ash are avoided. In addition, the toner has good residual accumulation resistance, residual accumulation on the toner cartridge is reduced, the printing quality is improved, stable printing is still achieved in the high-speed printing process, and good image quality is obtained.

The present invention relates to the field of semiconductor processing, and in particular to a mask process and optical proximity joint correction method, device, and apparatus. The method comprises receiving a target pattern, inputting the target pattern into a pre-trained joint correction model, causing the joint correction model to use the target pattern as an initial current mask pattern, segmenting the edges of an optical proximity correction target pattern in the current mask pattern to obtain a plurality of edge segments, and then iteratively adjusting the positions of the edge segments according to a preset mask image density function, a first linear coefficient corresponding to the mask image density function, a preset photoresist image item, and a second linear coefficient corresponding to the photoresist image item, until the edge placement errors of all edge segments of the current mask pattern are less than a preset qualified threshold; and outputting the current mask pattern with edge segments having edge placement errors less than the preset qualified threshold as a correction mask pattern. The present invention reduces process cycle time and costs.

To satisfactorily achieve both photoluminescent properties and color reproducibility when superimposing a photoluminescent toner on a plurality of color toners.SOLUTION: An image forming apparatus 1 changes, when a photoluminescent superimposition target portion is included in print data received from a host device 100, printing patterns N of a silver toner image PS and a color toner image PL in respective colors in the photoluminescent superimposition target portion and prints resulting images on a medium MD. The image forming apparatus 1 sets a photoluminescent area and a non-photoluminescent area, while setting the image density of the silver toner image PS in the photoluminescent superimposition target portion to 50%, reduces the image density within a range of 100% to 0% in the photoluminescent area, while maintaining the image density at 200% in the non-photoluminescent area, and prevents color toners TL from overlapping each other. Consequently, the image forming apparatus 1 can obtain sufficient photoluminescent properties in the images printed on the medium MD, and can sufficiently expand the color gamut of the images.SELECTED DRAWING: Figure 10

To provide an inkjet ink that achieves both high image density and excellent storage stability. [Solution] The inkjet ink contains a pigment, a pigment-coating resin, a hydrophobic solvent with a LogP of 0.03 to 0.51, and water. In the above inkjet ink, the ratio of the pigment-coating resin content to the pigment content is 8.0% by mass to 12% by mass. In the above inkjet ink, the hydrophobic solvent content is 10% by mass to 30% by mass. In the above inkjet ink, the average particle size of the pigment dispersion composed of the pigment and the pigment-coating resin when diluted 100 times by mass with a mixed solution of 50 parts by mass of the hydrophobic solvent and 50 parts by mass of water is 618 nm or more.

To provide a toner that can prevent a reduction in image density when a large number of images are formed.SOLUTION: A toner has toner particles containing a binder resin. The binder resin contains a polyester A containing a unit derived from isophthalic acid in an amount of 60 mol% or more as an acid component, in an amount of 50 mass% or more. The toner has aggregates containing silica and resin on the surface of the toner particles. When the number ratio of toner particles having the aggregates is defined as CI (number%), the CI is 1 number% or more and 15 number% or less. The number ratio of toner particles having the aggregates satisfies a predetermined criterion.SELECTED DRAWING: Figure 1

The invention discloses an organic silicon resin coated carrier for electrostatic development as well as a preparation method and application thereof, the carrier is composed of a carrier core and an organic silicon resin coating layer, and the organic silicon resin coating layer contains nano titanium dioxide and a single-arm carbon nanotube; the loading core is a lutetium-doped Mn-Zn series ferrite microsphere. The rare earth lutetium element is used for doping the Mn-Zn series ferrite microspheres, so that the electromagnetic performance of the manganese-zinc ferrite can be effectively improved; the two-component developer composed of the carrier and the carbon powder has excellent effects in the aspects of in-machine pollution, image density, bottom ash, powder consumption and printing caking evaluation.

To reduce the burden on correction of image density unevenness.SOLUTION: An image forming apparatus 100 comprises: an image forming unit 13 that has a developing unit 131c that attaches toner to a surface of a photoreceptor 131b to form a toner image, and forms an image on a recording material; a developing bias detection unit 20 that, when a test chart is formed on the recording material, detects a bias voltage applied to the developing unit 131c; a correction voltage calculation unit 30 that calculates a correction voltage for correcting the bias voltage, on the basis of a change in the density of a read image of the recording material on which the test chart is formed and the detected bias voltage; and a control unit 40 that corrects the bias voltage, on the basis of a change in the density of a read image of the recording material on which a document image is formed and the correction voltage.SELECTED DRAWING: Figure 2

To provide a process cartridge which suppresses an in-plane density difference by stabilizing the amount of supply of toner to a developing roller and which can maintain excellent image quality without generating deterioration in the image quality such as image density reduction and fogging by stabilizing toner coating on the developing roller.SOLUTION: A process cartridge includes a developing roller 25, a toner supply roller 34, a toner regulation member 35, and toner. The developing roller has a surface moving in a direction opposite to a movement direction of a surface of the toner supply roller at a position of contact with the toner supply roller. The developing roller and the toner supply roller are formed in a manner to have a peripheral speed ratio R of 1.1 or more and 2.5 or less, and the toner to be used satisfies a predetermined regulation.SELECTED DRAWING: Figure 2

To provide an image forming apparatus that can determine a state of pressure-contact / separation of an intermediate transfer belt with / from an image carrier without toner consumption.SOLUTION: An image forming apparatus 10 has: a process unit Pa that has a photoreceptor drum 30a, and forms a toner image on the photoreceptor drum 30a; an intermediate transfer belt 21 to a surface of which the toner image on the photoreceptor drum 30a is intermediately transferred; an intermediate transfer roller 24a whose position can be changed by manual operations to a first position where it brings the surface of the intermediate transfer belt 21 into contact with the photoreceptor drum 30a, and a second position where it separates the intermediate transfer belt 21 from the photoreceptor drum 30a; an image density sensor 40 that detects the toner image on the intermediate transfer belt 21, and whose relative position to the intermediate transfer belt 21 changes according to whether the intermediate transfer roller 24a is at the first position or the second position; and a control unit 60 that determines whether the intermediate transfer roller 24a is at the first position or the second position on the basis of a detection value from the image density sensor 40.SELECTED DRAWING: Figure 2

To suppress a decrease in productivity during double-sided printing.SOLUTION: The engine control unit 301 is configured to be able to execute the first operation (S705) when the predetermined condition is not satisfied, and to be able to execute the second operation (S704) when the predetermined condition is satisfied. The predetermined condition includes at least one of an environmental temperature being equal to or higher than a predetermined temperature, a remaining lifetime of the developing device being less than a predetermined value, designation of the second operation by the user, an image concentration of the immediately preceding print being equal to or greater than a predetermined value, an image of the immediately preceding print including a text other than text, and a maximum concentration of a partial region of the immediately preceding print being equal to or greater than a predetermined value (S721 to S723). The toner image formed in the second operation is transferred to the re-conveyed sheet (S704, S707, S708).SELECTED DRAWING: Figure 8

We provide inkjet inks with excellent image density, storage stability, and ejection stability. [Solution] The inkjet ink contains a pigment, a binder resin made of styrene-(meth)acrylic acid copolymer, and a first aqueous medium containing a hydrophobic solvent and water. The inkjet ink has a 30% dry viscosity of 120 mPa·s or more and 3800 mPa·s or less. The inkjet ink has a binder resin content of 0.50% by mass or more and 3.00% by mass or less. The binder resin has a styrene ratio of 20% by mass or more and 40% by mass or less, and a (meth)acrylic acid ratio of 60% by mass or more and 80% by mass or less. The inkjet ink has an HSP distance of 8.0 or more and 12.0 or less between the binder resin and the hydrophobic solvent.

To prevent the image density of a binary image after correction processing from changing by a large amount after creation of a certain pixel value in a multi-valued image being an origin of the binary image.SOLUTION: A counting unit 162 counts, for every target pixel in binary image data obtained by error diffusion, the number of colored pixels within an area of a predetermined size around the target pixel. A threshold processing unit 164 compares the total number of colored pixels within the area with a correction threshold to control whether to perform isolated point correction for the target pixel. The correction threshold used for the control is provided from a random number application unit 168 for every pixel. The random number application unit 165 generates the correction threshold different for every pixel by applying, to a reference value stored in a storage unit 165, the random number generated by a random number generation unit 166 for every pixel.SELECTED DRAWING: Figure 2

To provide an electrophotographic photoreceptor that is less prone to ghosting and density unevenness in images. [Solution] The outermost layer contains a first resin, a second resin, a charge transport material, and an antioxidant, and at least one of the first resin and the second resin has a constituent unit containing biphenyl represented by formula (BPa), and at least one of the charge transport material and the antioxidant has at least one of biphenyl represented by formula (BPa) and biphenyl represented by formula (BPb) in its molecule, and the number of biphenyls per unit molecular weight of each satisfies a specific relationship. JPEG2026084600000048.jpg6068

To perform printing according to the density of an image, while preventing extension of time required for printing.SOLUTION: An image forming apparatus 1 is provided with: an image density calculation section 58 and an image density determination section 59 that analyze the density of print data; a first image forming unit 10 that performs image formation on the basis of at least either a developing voltage value 62 or an LED light quantity value 63 as a first setting value related to the density in black; a second image forming unit 10 that performs image formation on the basis of at least either the developing voltage value 62 or the LED light quantity value 63 as a second setting value different from the first setting value and related to the density in black; and a use image forming unit determination section 51 that selects either the first image forming unit 10 or the second image forming unit 10 on the basis of results of analysis performed by the image density calculation section 58 and the image density determination section 59, and causes the selected image forming unit to perform image formation.SELECTED DRAWING: Figure 9

To provide an ink set which can obtain a good image density even when a pigment ink is used and can obtain high friction fastness.SOLUTION: An ink set comprising: a pre-processing fluid; an aqueous pigment ink; and a post-processing fluid, wherein the pre-processing fluid contains an organic acid and an amine compound, and the post-processing fluid contains cationic resin particles.SELECTED DRAWING: Figure 1

This invention provides an aqueous inkjet recording ink that offers high image density on plain paper, excellent curl resistance, good redispersibility, and scratch resistance. [Solution] The water-based inkjet recording ink according to this embodiment contains a pigment, a pigment-coated resin, a water-soluble organic solvent, polyethylene glycol with a molecular weight of 400 in an amount of 10% to 20% by mass, 3% to 7% by mass of 3-methyl-1,5-pentanediol, 0.5% to 5% by mass of 2-ethyl-1,3-hexanediol, and water.

The present invention relates to an image forming apparatus (100) having an intermediate transfer body which can be easily inserted into and pulled out of an apparatus main body, and having a small size, low cost, difficult image density variation, and a long service life. The image forming apparatus (100) comprises: a plurality of frame members (49) for holding an image carrier (1); an intermediate transfer body (3) that secondarily transfers the toner image onto the recording medium (P); a plurality of primary transfer members (11) that primarily transfer the toner image onto the intermediate transfer body at the primary transfer section; a holding member (51, 81) that holds the primary transfer member; a plurality of pressing members (50, 80) for pressing the holding member; and a pressing member (57 or 58) that presses the image carrier against the intermediate transfer body frame (37) or the main body structure side plate (55), the holding member being brought into contact with the frame or the frame member to position the primary transfer member, one end side of the image carrier being pressed against the frame by the pressing member (57) to be positioned, and the other end side of the image carrier being pressed against the frame by the pressing member (57) to be positioned. The primary transfer member on one end side is positioned by pressing a holding member (81) against the frame (37) by means of a pressing member (80).

To ensure accurate document size detection.SOLUTION: An image forming device 1 includes: a document end candidate detection part 211 that detects, as a candidate position of a document end, a position of a concentration change point on the most downstream side in a conveyance direction at which an image density is equal to or higher than a threshold value at each of a plurality of positions in a main scanning direction on the basis of the concentration change indicated by image data obtained by reading by a reading part 51, and further detects, as a document end candidate, an image formed by a group of pixels continuous in the main scanning direction at the candidate position; and a document size detection part 212 that performs size detection processing of detecting a document size of the image data in the main scanning direction on the basis of the image of the document end candidate when the detected image of the document end candidate is composed of one image that extends in the main scanning direction and is present at the same position in the conveyance direction.SELECTED DRAWING: Figure 6

To suppress image density unevenness in a sub-scanning direction with high accuracy by suppressing consumption of paper.SOLUTION: The image forming apparatus 100 includes the image forming portion PY configured to form a yellow image, the image forming portion PM configured to form a magenta image, the reader A configured to read a first measurement image and a second measurement image including a yellow pattern image and a magenta pattern image, respectively, and the controller 110 configured to determine a correction value for correcting image density unevenness in the sub-scanning direction based on reading results of the first measurement image and the second measurement image by the reader A. In the first measurement image and the second measurement image, the positions of the yellow pattern image and the magenta pattern image are formed at different positions in the main scanning direction.SELECTED DRAWING: Figure 1