58results about "Electrographic processes using charge pattern" patented technology

To provide an image forming apparatus that can effectively prevent the occurrence of an image failure due to aggregation of developer immediately after the end of an installation mode in a magnetic one-component developing system.SOLUTION: An image forming apparatus comprises an image carrier, a developing device, a developer storage container, and a control unit. The developing device includes: a developer carrier that carries developer; a stirring and conveying member that conveys the developer while stirring it; and a regulation member that regulates a layer thickness of the developer carried on the developer carrier. The control unit can execute normal supply for supplying the developer from the developer storage container to the developing device according to an amount of the developer consumed in a printing operation, and an installation mode for supplying a larger amount of the developer than the normal supply from the developer storage container to the developing device and rotating the developer carrier in a normal direction for a predetermined time. The control unit executes a developer removal operation for rotating the developer carrier in a direction opposite to the normal direction immediately after the execution of the installation mode.SELECTED DRAWING: Figure 5

To provide a green toner for electrostatic image development that can form a green image with high brightness and saturation. [Solution] The green toner for electrostatic image development contains green toner particles. The green toner particles contain a binder resin, CI pigment yellow 101, and at least one non-fluorescent pigment selected from the group consisting of CI pigment green 7, CI pigment green 36, CI pigment green 58, CI pigment green 59, and CI pigment blue 76, wherein the mass-based ratio M2 / M1 of the content M1 of CI pigment yellow 101 to the content M2 of the non-fluorescent pigment is 0.05 or more and 1.5 or less, and the total content of CI pigment yellow 101 and the non-fluorescent pigment relative to the total green toner particles is 5% by mass or more and 15% by mass or less.

An exposure head for exposing a photosensitive drum includes a substrate, a plurality of strip-shaped semiconductor chips provided with a plurality of light emitting elements for emitting light and a drive circuit for driving the light emitting elements, and arranged on the substrate, and a lens array that converges light from the light emitting elements onto the photosensitive drum. The drive circuit operates between a first potential and a second potential, the light emitting elements operate between a third potential and a fourth potential, and a potential difference between the third potential and the fourth potential is equal to or greater than a potential difference between the first potential and the second potential.

An electrostatic charge image developing green toner contains green toner particles containing a binder resin, an azomethine fluorescent pigment having an emission peak in a wavelength region of 500 nm or more and 550 nm or less in an emission spectrum, and a non-fluorescent pigment having a reflection peak in a wavelength region of 480 nm or more and 540 nm or less in a reflection spectrum, in which a mass-based ratio M2 / M1 of a content M2 of the non-fluorescent pigment to a content M1 of the azomethine fluorescent pigment is 0.05 or more and 1.5 or less, and a total content of the azomethine fluorescent pigment and the non-fluorescent pigment with respect to a total amount of the green toner particles is 5% by mass or more and 15% by mass or less.

To provide a configuration capable of appropriately discharging a developer regardless of the fluidity of the developer.SOLUTION: The developing container accommodates a developer. The developer discharge portion discharges the developer to the outside of the developer container. The developer surface detection sensor detects a developer surface in the developer container. The control part executes a developer discharge mode for forcibly discharging the developer from the developer discharge part based on Vpp which is a difference between a maximum output value Vmax and a minimum output value Vmin of the developer surface detection sensor in a predetermined time.SELECTED DRAWING: Figure 10

An image forming system includes a processor configured to obtain a type of printed material to be generated from a medium and control, in accordance with the obtained type of printed material, a mode of pressure-sealing toner, which demonstrates an adhesion function when deformed by pressure, at a time when the pressure-sealing toner is applied to the printed material.

This disclosure describes a cartridge that includes a photosensitive drum, a development roller, a supply roller, a development chamber, a development blade with an elastic component, and a toner accommodation section. The accommodation section and development chamber are in mutual communication. Blade contact with the development roller is below its horizontal centerline. The toner, with particle diameter R, contains fluorine-enriched hydrotalcite particles as an external additive. The text specifies critical geometric relationships between the elastic blade and the development roller at their nip. Using multiple defined reference points (D, B, E, F, G) to describe this configuration, a crucial condition is stated: the distance between points G and F must be at least R.

A printing formulation transfer assembly is provided. In an example, a printing formulation transfer assembly includes a printing formulation transfer element to receive a first layer of printing formulation and a second layer of printing formulation, and includes an energy source. The energy source may provide energy to the first layer at a first predetermined intensity level and energy to the second layer at a different second predetermined intensity level.

To appropriately adjust a transfer voltage to an image preferred by a user.SOLUTION: An image forming apparatus has: an image carrier 44b; transfer means 45b; application means 76; an output mode execution unit 31d that outputs a chart 100; a density information acquisition unit 3 that is related to density of a test image on a recording material; a setting unit 30 that sets a transfer voltage on the basis of the density information; and an input unit 70 that receives input of instruction information. The execution unit 31d can control to transfer a plurality of first test images with first density on the recording material S, and can control to transfer a plurality of second test images with second density higher than the first density to the recording material S. According to the instruction information input to the input unit 70, the setting unit 30 can set a first transfer voltage by using at least the information on the density of the first test images (priority to half tone), or can set a second transfer voltage by using at least the information on the density of the second test images without using the information on the density of the first test images (priority to solid image).SELECTED DRAWING: Figure 8

An exposure head includes a substrate on which light sources are mounted, and a condensing optical system. A memory stores a profile indicating correction gains for exposure amounts. A sensor detects a temperature. A processor acquires a correction gain that corresponds to a position of a light source that reached an exposure timing, corrects, for each of the light sources, an exposure amount of the light source with the correction gain corresponding to the position of the light source, and adjusts, for each of the light sources, a reference position of the corresponding correction gain in the profile in accordance with the temperature detected by the sensor.

The embodiments herein relate to electrochromic stacks, electrochromic devices, and methods and apparatus for making such stacks and devices. In various embodiments, an anodically coloring layer in an electrochromic stack or device is fabricated to include nickel-tungsten-niobium-oxide (NiWNbO). This material is particularly beneficial in that it is very transparent in its clear state.

An image forming apparatus includes: a first image forming unit that has a plurality of image forming sections and an intermediate transfer body to which toner images formed by the plurality of image forming sections are primarily transferred; a second image forming unit that is disposed adjacent to the first image forming unit and that has a plurality of image forming sections and an intermediate transfer body to which toner images formed by the plurality of image forming sections are primarily transferred; a transport belt that transports paper to a secondary transfer position at which the toner images respectively formed on the intermediate transfer bodies of the first image forming unit and the second image forming unit are secondarily transferred; a detection device that is provided downstream of the two secondary transfer positions in a transport direction in which the paper is transported by the transport belt and that detects pattern images formed by the toner images secondarily transferred onto the transport belt; a first temperature sensor that is disposed to detect a temperature around the first image forming unit; and a second temperature sensor that is disposed to detect a temperature around the second image forming unit, in which a processor is configured to: cause all the image forming sections of the first image forming unit and the second image forming unit to form the pattern images on the transport belt in a case where a temperature difference between a temperature detected by the first temperature sensor and a temperature detected by the second temperature sensor is equal to or greater than a first threshold set in advance; and adjust a misalignment of the toner images formed by the first image forming unit and the second image forming unit by using a detection result of the detection device.

A toner set includes two colors of fluorescent toners. A difference between wavelengths of fluorescent light emitted by the two colors of fluorescent toners is 50 nm or more. At least one of the two colors of fluorescent toners includes only an aggregation-induced emission colorant serving as a fluorescent colorant.

To provide an optical scanning device that can be suppressed from enlarging in size.SOLUTION: An optical scanning device is provided with a first scanning optical system LoY, a second scanning optical system LoM, a third scanning optical system LoC and a fourth scanning optical system LoK. Each of the scanning optical systems has a first scanning lens 60, at least one reflection mirror (first reflection mirror 81) and one second scanning lens 70 that collects beams in a sub scanning direction. In the first scanning optical system LoY and in the second scanning optical system LoM, centers C1 and C2 in the sub scanning direction of the second scanning lenses 70Y and 70M are offset to one side in a second direction with respect to beams BY and BM passing through the second scanning lenses 70Y and 70M. In the third scanning optical system LoC and in the fourth scanning optical system LoK, centers C3 and C4 in the sub scanning direction of the second scanning lenses 70C and 70K are offset to the other side in the second direction with respect to beams BC and BK passing through the second scanning lenses 70C and 70L.SELECTED DRAWING: Figure 6

To enable accurate detection of the amount of remaining toner in an image forming apparatus that uses a toner bottle.SOLUTION: An image forming apparatus 100 comprises a toner remaining amount detection device 200 that detects the amount of toner remaining in a toner bottle 32B that stores toner. The toner remaining amount detection device 200 has a tuning folk 210 that is installed to receive a load from the toner bottle 32B, a vibration detection unit 220 that detects vibration of the tuning folk caused by the load, a control unit 230 that estimates the amount of remaining toner on the basis of the vibration, and a vibration generation unit 270 that forcibly vibrates the tuning folk 210.SELECTED DRAWING: Figure 4

An image forming system includes: a first image forming unit including a plurality of first image forming sections and a first intermediate transfer body to which a toner image formed by the first image forming sections is primarily transferred; a second image forming unit having a plurality of second image forming sections and a second intermediate transfer body to which the toner image formed by the second image forming sections is primarily transferred, the second image forming section being further downstream than the first image forming unit in the sheet conveying direction; a sheet conveying section that conveys a sheet to a position at which the toner image formed on each of the first and second intermediate transfer bodies is secondarily transferred; and a processor that forms images at the same positions by the one first image forming section and the one second image forming section when the positions of the images printed on the paper by the first and second image forming units are aligned. And locally changing the drawing start period of the image by the first or second image forming unit according to the relative misalignment amount between the images so as to suppress the misalignment amount.

A developing device includes a rotating member that is formed in a tubular shape, that is provided to be rotatable, that includes one end portion and the other end portion, and that includes an outer peripheral surface to which a developer adheres, plural magnetic poles that are disposed inside the rotating member and that are disposed to be arranged in a rotation direction of the rotating member, a first magnetic member that is disposed outside the rotating member, that is disposed at a position facing the one end portion of the rotating member, that includes a downstream-side end portion, which is an end portion positioned on a downstream side in the rotation direction of the rotating member, and that forms a magnetic field between the first magnetic member and the magnetic poles, and a second magnetic member that is disposed outside the rotating member, that is disposed at a position facing the one end portion of the rotating member, that is disposed to be closer to the other end portion of the rotating member than the first magnetic member is, that forms a magnetic field between the second magnetic member and the magnetic poles, and that includes a facing portion, which is a portion facing the rotating member, in which, in the rotation direction, the facing portion of the second magnetic member is positioned upstream of one of the plural magnetic poles that is positioned upstream of the downstream-side end portion of the first magnetic member in the rotation direction and that is a first magnetic pole counting from the downstream-side end portion.

An image forming system (10) includes a first image forming unit (30) including plural first image forming portions (32) and a first intermediate transfer medium (40) to which a toner image formed by the plural first image forming portions is primarily transferred, a second image forming unit (50) that is provided on a downstream side of a sheet transport direction with respect to the first image forming unit and that includes plural second image forming portions (52) and a second intermediate transfer medium (60) to which a toner image formed by the plural second image forming portions is primarily transferred, a sheet transport portion (11) that transports a sheet to a secondary transfer position at which each of the toner image formed on the first intermediate transfer medium of the first image forming unit and the toner image formed on the second intermediate transfer medium of the second image forming unit is secondarily transferred, and a processor (80) configured to, in performing registration between a position of an image printed on the sheet by the first image forming unit and a position of an image printed on the sheet by the second image forming unit, cause each of one first image forming portion selected from the plural first image forming portions of the first image forming unit and one second image forming portion selected from the plural second image forming portions of the second image forming unit to form the image at the same position on the sheet, and reduce a misregistration amount by partially changing a drawing cycle of the image in any one of the first image forming unit or the second image forming unit in accordance with a relative misregistration amount between the two formed images.

An image forming apparatus includes: a first image forming unit that has a plurality of image forming sections and an intermediate transfer body to which toner images formed by the plurality of image forming sections are primarily transferred; a second image forming unit that is disposed adjacent to the first image forming unit and that has a plurality of image forming sections and an intermediate transfer body to which toner images formed by the plurality of image forming sections are primarily transferred; a transport belt that transports paper to a secondary transfer position at which the toner images respectively formed on the intermediate transfer bodies of the first image forming unit and the second image forming unit are secondarily transferred; a detection device that is provided downstream of the two secondary transfer positions in a transport direction in which the paper is transported by the transport belt and that detects pattern images formed by the toner images secondarily transferred onto the transport belt; a first temperature sensor that is disposed to detect a temperature around the first image forming unit; and a second temperature sensor that is disposed to detect a temperature around the second image forming unit, in which a processor is configured to: cause all the image forming sections of the first image forming unit and the second image forming unit to form the pattern images on the transport belt in a case where a temperature difference between a temperature detected by the first temperature sensor and a temperature detected by the second temperature sensor is equal to or greater than a first threshold set in advance; and adjust a misalignment of the toner images formed by the first image forming unit and the second image forming unit by using a detection result of the detection device.

To enable a plurality of coupling lenses to be mounted from the same direction, and thereby suppress complication of a manufacturing process.SOLUTION: A scanning optical apparatus includes: a first coupling lens 20Y and a second coupling lens 20M for converting light from semiconductor lasers 10Y and 10M into a beam; a deflector having a polygon mirror for deflecting the beam from the coupling lens 20; a resin frame F to which the deflector is fixed; a first holding member (first laser holder H11) having a first seating face Hf1 where the first coupling lens 20Y is fixed by a photocurable resin P; and a second holding member (lens holder H2) having a second seating face Hf21 where the second coupling lens 20M is fixed by the photocurable resin P. The second holding member holds the second coupling lens 20M to a position aligned in a rotation axis direction with respect to the first coupling lens 20Y, and is fixed to the frame F.SELECTED DRAWING: Figure 12

Examples disclosed herein relate to an imaging device. The imaging device to include a discharge member to discharge a first pattern on a photoconductor; and a writing engine to control the discharge member to discharge a second pattern to the photoconductor to obscure any latent pattern formed from the first pattern remaining on the photoconductor.

An image forming system includes a first image forming unit including plural first image forming portions and a first intermediate transfer medium to which a toner image formed by the plural first image forming portions is primarily transferred, a second image forming unit that is provided on a downstream side of a sheet transport direction with respect to the first image forming unit and that includes plural second image forming portions and a second intermediate transfer medium to which a toner image formed by the plural second image forming portions is primarily transferred, a sheet transport portion that transports a sheet to a secondary transfer position at which each of the toner image formed on the first intermediate transfer medium of the first image forming unit and the toner image formed on the second intermediate transfer medium of the second image forming unit is secondarily transferred, and a processor configured to, in performing registration between a position of an image printed on the sheet by the first image forming unit and a position of an image printed on the sheet by the second image forming unit, cause each of one first image forming portion selected from the plural first image forming portions of the first image forming unit and one second image forming portion selected from the plural second image forming portions of the second image forming unit to form the image at the same position on the sheet, and reduce a misregistration amount by partially changing a drawing cycle of the image in any one of the first image forming unit or the second image forming unit in accordance with a relative misregistration amount between the two formed images.