91 results about "Image density" patented technology

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.

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 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.

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 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

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 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 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.

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

When adjusting the light emission timing of each light-emitting element based on the density of the correction image, it is determined whether or not the image density is lower than expected. [Solution] The control unit determines the deviation of the writing position based on the density of the correction image, and performs a correction process to correct the deviation of the writing position by adjusting the light emission timing of each light-emitting element based on the determined deviation of the writing position. When performing the correction process, the control unit performs at least one of the first process and the second process. The control unit performs a first process to determine whether or not an image density unevenness has occurred on the scanned surface based on the density of the first image. The control unit performs a second process to determine whether or not an abnormality in light intensity has occurred in any of the multiple light-emitting elements based on the density of the second image.

We provide an ink that can achieve both high image density and long-term storage stability. [Solution] The inkjet ink contains a pigment, a block copolymer in which the hydrophobic polymer block is composed of benzyl methacrylate and the hydrophilic polymer block is composed of methacrylic acid, and water. The acid value of the block copolymer is 120 mg KOH / g or more and 220 mg KOH / g or less. The content of the block copolymer is 0.6% by mass or more and 2.6% by mass or less. The mass ratio of the block copolymer to the pigment is 0.12 or more and 0.51 or less. In the inkjet ink, the mass ratio of solids in the supernatant liquid obtained by centrifugation is 0.5% by mass or more and 3.0% by mass or less.

An image forming apparatus includes an image bearing member, an image forming portion, a transfer member, a power source, an acquiring portion, and a controller capable of executing an operation in an adjustment mode. A plurality of test toner images transferred onto a recording material in the occurrence in the adjusting mode include a first test toner image transferred under application of a first test voltage and a second test toner image transferred under application of a second test voltage different from the first test voltage. In the operation in the adjustment mode, the controller adjusts the transfer voltage set for transfer on the basis of first information on variation in image density acquired in different regions of the first test toner image and second information on variation in image density acquired in different regions of the second test toner image.

The application discloses a dual-source spectral CT high-resolution imaging device and method, which is installed on a CT sliding ring rotating support and comprises a high-energy imaging assembly and a low-energy imaging assembly; the high-energy imaging assembly and the low-energy imaging assembly each comprise an X-ray emitting device for emitting X-rays, an amorphous silicon detector and an amorphous selenium detector for collecting digital images. The amorphous silicon detector and the amorphous selenium detector are combined into a larger detector, and the amorphous silicon detector and the amorphous selenium detector independently image and reconstruct three-dimensional data; the image space resolution of the amorphous selenium detector is higher, and the image density resolution of the amorphous silicon detector is higher; and after the reconstruction is completed, the two groups of images are fused, so that the fused images can maintain higher space resolution and better density resolution.

When performing calibration in two stages, if the reference image is formed at the same location on the intermediate transfer belt, the present invention provides an image forming apparatus that can perform the second adjustment with high accuracy. [Solution] The image forming apparatus comprises an image carrier, a charging device, an exposure device, a developing device, an intermediate transfer belt, a cleaning brush, an image density sensor, and a control unit. The control unit performs calibration including: a first adjustment step of adjusting the image forming conditions based on the detection result of a first reference image formed on the intermediate transfer belt; a first surface measurement step of detecting the formation region of the first reference image with the image density sensor after the execution of the first adjustment step; and a second adjustment step of changing the image forming conditions based on the detection result of a second reference image formed in the formation region of the first reference image after the execution of the first surface measurement step. If the output value of the image density sensor in the first surface measurement step is less than or equal to a threshold, the second adjustment step is executed.

The invention discloses an image dense estimation-oriented lightweight cyclic refinement method, which comprises the following steps of: selecting any single-frame image, and carrying out feature extraction on the single-frame image to obtain a multi-scale feature of the single-frame image; performing initial depth estimation on the multi-scale features; performing feature modulation on the multi-scale features to obtain modulation features adaptive to cyclic refinement; performing circulation depth refinement on the modulation characteristics, wherein a refinement direction is generated in each circulation; applying the refining direction generated by each circulation refining to the initial depth estimation in sequence, and updating step by step to obtain a final depth estimation result; constructing an up-sampling module, and learning an up-sampling mask; and performing up-sampling on the finally estimated depth result by using an up-sampling mask to obtain a full-resolution depth estimation result. According to the invention, the lightweight depth estimation is realized by reducing the model parameters of the existing coarse-to-fine estimation method, and the problem of error propagation caused by the adoption of a coarse-to-fine estimation scheme is solved.

An image forming apparatus includes a plurality of image forming units configured to form images using toners of a plurality of colors, the plurality of image forming units including a first image forming unit configured to form an image using a first toner, and a second image forming unit configured to form an image using a second toner different from the first toner, an image bearing member configured to bear the images formed by the plurality of image forming units, a conveying member configured to convey a sheet to a nip portion for transferring the images on the image bearing member onto the sheet, and a controller configured to control the plurality of image forming units to form a detection image for detecting an image density.

This invention discloses a printing data processing method, apparatus, device, and medium based on color mixing point compensation, to solve the technical problem in the prior art that it is impossible to compensate for ink volume only in the color mixing area. The method includes: calculating the theoretical image density of the color mixing area of ​​the image to be printed based on the image data to be printed; printing the image to be printed based on the image data to be printed, and obtaining the actual image density of the color mixing area of ​​the printed image; calculating a color mixing point compensation coefficient based on the theoretical image density and the actual image density; compensating the printing data corresponding to the color mixing area based on the color mixing point compensation coefficient; and performing inkjet printing based on the compensated data. This invention achieves ink concentration compensation in the color mixing area while ensuring that the ink concentration in the monochrome image area remains unchanged, resulting in better image printing effects.

To provide a method for manufacturing a toner having high cleaning property and image density stability.SOLUTION: Wherein the toner particles have a solidity of at least 0.90 and not more than 0.99, the metallic titanate compound particles have a shear adhesive force of at least 4000Pa and not more than 10000Pa, and the mixing step uses a mixing apparatus having a mixing tank and a rotatable stirring blade provided in the mixing tank, stirring and mixing the material to be treated by rotating the stirring blade at a tip peripheral speed of 30m / s or more and 70m / s or less in the mixing tank.SELECTED DRAWING: None

Provided is a developing roller which can suppress toner leakage and fogging and is also excellent in stability of image density. The developing roller includes a shaft member, an intermediate layer disposed radially outward of the shaft member, and a surface layer at an outermost position. The intermediate layer contains an aggregate A formed of particles dispersed in a resin. The surface layer contains particles B dispersed in a resin, and the particles B are at least one selected from the group consisting of particles and aggregates formed from the particles. The granular body (B) has an average diameter dB of not less than 1 [mu] m and not more than 10 [mu] m.

This application relates to a method, apparatus, computer device, and storage medium for generating a weaving simulation image. The method includes: acquiring simulation density information, yarn diameter information, weaving method information, and yarn threading quantity information from a weaving simulation command input; determining theoretical spindle length information based on the simulation density information, yarn diameter information, weaving method information, and yarn threading quantity information; determining weaving angle information based on the theoretical spindle length information and weaving method information; determining imaging density information based on the weaving method information; acquiring a weaving motion model corresponding to the weaving method information; and inputting the weaving motion model, weaving angle information, and imaging density information as simulation parameters into a pre-compiled fabric simulation program to obtain a weaving simulation image. This method allows for perception of the weaving effect through a weaving simulation image without the need for actual production of woven fabric samples, avoiding increased costs associated with producing woven fabric samples and reducing the cost of obtaining the weaving effect of the fabric.

The present invention provides toner, a toner cartridge, and an image forming apparatus, the toner having excellent low-temperature fixing properties, excellent heat resistance even in the case of being reused, being able to sufficiently maintain a charge amount, and having difficulty in reducing an image density. The toner cartridge houses the toner. The toner of the embodiment has toner parent particles and an external additive. The external additive contains silica particles A, B, and C having particle diameters of 10 to 14 nm, 40 to 70 nm, and 90 to 150 nm, respectively. The content of each of the silica particles A, B, and C is 0.1 to 0.8 parts by mass, 0.3 to 1.2 parts by mass, and 0.3 to 1.2 parts by mass, respectively, relative to 100 parts by mass of the toner parent particles. The total content of the silica particles A, B, and C is 3.0 parts by mass or less relative to 100 parts by mass of the toner parent particles. The ratio of the content of the silica particles B and C to the content of the silica particles A is 1.0 to 5.0. The volume average primary particle diameter Dv50 of the toner is 5.5 to 11.0 μm. 50 is 5.5 to 11.0 μm.

To provide an image forming apparatus that prevents variations in image density by preventing variations in bright part potential of photoconductor drums during repeated use for long period.SOLUTION: An image forming apparatus has a photoconductor drum, and a plurality of light emitting devices for emitting exposure light with which the surface of the photoconductor drum is irradiated. An undercoat layer of the photoconductor drum contains zinc oxide particles and a compound with a specific structure, and the light emitting device is an organic EL device.SELECTED DRAWING: Figure 1