Abstract: An image processing unit includes a region separation device and a spatial filtering device. The region separation device detects line widths of a manuscript image in which the line widths are different between a vertical line and a horizontal line and determines which of the vertical line or the horizontal line is thinner. The spatial filtering device executes an emphasizing process to make a widening ratio of a thinner line of the vertical line or the horizontal line higher than a widening ratio of the other line.

Abstract: A method for producing an amorphous carbon particle includes the steps of: obtaining a first crosslinked product by admixing mesophase particles with an amorphous carbon precursor and thereafter subjecting the mixture to a crosslinking treatment, or obtaining a second crosslinked product by crosslinking the amorphous carbon precursor and thereafter admixing the mesophase particles with the crosslinked precursor; and subjecting the first or second crosslinked product to an infusibilization treatment and thereafter firing the product to produce amorphous carbon particles including the mesophase particles within the particles.

Abstract: An image processing unit includes a region separation device and a spatial filtering device. The region separation device detects line widths of a manuscript image in which the line widths are different between a vertical line and a horizontal line and determines which of the vertical line or the horizontal line is thinner. The spatial filtering device executes an emphasizing process to make a widening ratio of a thinner line of the vertical line or the horizontal line higher than a widening ratio of the other line.

Abstract: A method for producing amorphous carbon particles comprising includes adding and mixing graphite particles into a precursor of amorphous carbon and then cross-linking the precursor of amorphous carbon to obtain a first cross-linked product, or cross-linking a precursor of amorphous carbon and then adding and mixing graphite particles into the cross-linked precursor of amorphous carbon to obtain a second cross-linked product. Infusibility is imparted to the first or second cross-linked product to obtain an infusibilized product to which infusibility has been imparted. The infusibilized product is baked to obtain amorphous carbon particles. The amorphous carbon particles include the graphite particles and amorphous carbon which embeds the graphite particles.

Abstract: A method for producing amorphous carbon particles comprising includes adding and mixing graphite particles into a precursor of amorphous carbon and then cross-linking the precursor of amorphous carbon to obtain a first cross-linked product, or cross-linking a precursor of amorphous carbon and then adding and mixing graphite particles into the cross-linked precursor of amorphous carbon to obtain a second cross-linked product. Infusibility is imparted to the first or second cross-linked product to obtain an infusibilized product to which infusibility has been imparted. The infusibilized product is baked to obtain amorphous carbon particles. The amorphous carbon particles include the graphite particles and amorphous carbon which embeds the graphite particles.

Abstract: A method for producing a non-graphitizable carbon material includes providing a raw material of a non-graphitizable carbon material. The raw material is cross-linked to obtain a cross-linked product. The cross-linked product is infusibilized to obtain an infusibilized product. The infusibilized product is baked to obtain the non-graphitizable carbon material. A mechanochemical treatment is performed on the cross-linked product or the infusibilized product.

Abstract: Provided is a method for producing a non-graphitizable carbon material, the method including a step in which a raw material of the non-graphitizable carbon material is subjected to a cross-linking treatment to obtain a cross-linked product; a step in which the cross-linked product is subjected to an infusibility-imparting treatment to obtain an infusibility-imparted product; a step in which the infusibility-imparted product is subjected to a pulverizing treatment; and a step in which the infusibility-imparted product that has been subjected to the pulverizing treatment is fired at 900° C. to 1300° C. to obtain the non-graphitizable carbon material.

Abstract: A method for producing an amorphous carbon particle includes the steps of: obtaining a first crosslinked product by admixing mesophase particles with an amorphous carbon precursor and thereafter subjecting the mixture to a crosslinking treatment, or obtaining a second crosslinked product by crosslinking the amorphous carbon precursor and thereafter admixing the mesophase particles with the crosslinked precursor; and subjecting the first or second crosslinked product to an infusibilization treatment and thereafter firing the product to produce amorphous carbon particles including the mesophase particles within the particles.

Abstract: Provided is a method for producing a non-graphitizable carbon material, the method including a step in which a raw material of the non-graphitizable carbon material is subjected to a cross-linking treatment to obtain a cross-linked product; a step in which the cross-linked product is subjected to an infusibility-imparting treatment to obtain an infusibility-imparted product; a step in which the infusibility-imparted product is subjected to a pulverizing treatment; and a step in which the infusibility-imparted product that has been subjected to the pulverizing treatment is fired at 900° C. to 1300° C. to obtain the non-graphitizable carbon material.

Abstract: A method for producing amorphous carbon particles comprising includes adding and mixing graphite particles into a precursor of amorphous carbon and then cross-linking the precursor of amorphous carbon to obtain a first cross-linked product, or cross-linking a precursor of amorphous carbon and then adding and mixing graphite particles into the cross-linked precursor of amorphous carbon to obtain a second cross-linked product. Infusibility is imparted to the first or second cross-linked product to obtain an infusibilized product to which infusibility has been imparted. The infusibilized product is baked to obtain amorphous carbon particles. The amorphous carbon particles include the graphite particles and amorphous carbon which embeds the graphite particles.

Abstract: A method for producing a non-graphitizable carbon material includes providing a raw material of a non-graphitizable carbon material. The raw material is cross-linked to obtain a cross-linked product. The cross-linked product is infusibilized to obtain an infusibilized product. The infusibilized product is baked to obtain the non-graphitizable carbon material. A mechanochemical treatment is performed on the cross-linked product or the infusibilized product.

Abstract: An image forming apparatus includes image forming sections for respective colors, the image forming sections facing an outer surface of an intermediate transfer belt on an outward path. A transfer roller is provided on a returning path and is movable to a contact position where the transfer roller is pressed against the intermediate transfer belt or to a detachment position where the transfer roller is detached from the intermediate transfer belt. A density sensor is provided for detecting a density of toner image on the intermediate transfer belt. In an image quality adjustment operation, image forming sections form a toner image row on the intermediate transfer belt, and the density sensor measures densities. A length of the toner image row is smaller than a length of the intermediate transfer belt between the endmost photoreceptor drum on the downstream side and the transfer roller.

Abstract: An image processing section includes a density correction adjustment section, and in response to an instruction from a density correction process section to adjust a density correction process, the density correction adjustment section reviews a conversion value table which is used by the density correction process section to calculate an output correction value by conversion, so as to adjust the density correction process.

Abstract: An image forming apparatus including: a black image forming section for forming a black image and a first black pattern for a coarse correction of black and optionally a second black pattern for a precise correction of black; a color image forming section for forming a color image optionally a third pattern for a coarse correction of color and optionally a fourth pattern for a precise correction of color; and a control section for allowing at least the first black pattern to be formed and optionally a second black pattern and third and fourth color patterns, and controlling to perform the coarse correction of black for correcting a forming condition of a black image to be formed and to perform optionally a precise correction of black, the coarse and precise correction of color based on the measurement of the formed pattern(s), wherein the control section controls to perform the coarse correction of black but not to perform the precise correction of black and the coarse and precise corrections of color in case

Abstract: Image forming apparatus includes: image forming sections for respective colors, image forming sections provided so as to face outer surface of intermediate transfer belt on outward path; transfer roller provided on returning path, transfer roller which is moved to contact position where transfer roller is pressed against intermediate transfer belt or to detachment position where transfer roller is detached from intermediate transfer belt; and density sensor detecting density of toner image on intermediate transfer belt, density sensor provided between transfer roller and endmost photoreceptor on downstream side of outward path. In image quality adjustment operation, image forming sections form toner image row on intermediate transfer belt which is row of toner images for image quality adjustment, and density sensor measures densities. Length of toner image row is smaller than length of intermediate transfer belt between endmost photoreceptor drum on downstream side and transfer roller.

Abstract: An image processing section includes a density correction adjustment section, and in response to an instruction from a density correction process section to adjust a density correction process, the density correction adjustment section reviews a conversion value table which is used by the density correction process section to calculate an output correction value by conversion, so as to adjust the density correction process.

Abstract: It is judged whether a sufficient time for executing all of three correction processings (a high density correction processing, a halftone correction processing, and a registration correction processing) can be secured or not. When the sufficient time cannot be secured, the high density correction processing as an essential correction processing is executed. A history of the halftone correction processing and a history of the registration correction processing are compared with each other. A date of latest execution of the halftone correction processing and a date of latest execution of the registration correction processing are compared with each other to judge whether or not the execution of the halftone correction processing is earlier, and the registration correction processing and the halftone correction processing are executed, respectively.

Abstract: An image forming apparatus and an image forming method capable of executing process control at appropriate timing are provided. A control section of an image forming apparatus carries out control for determining execution time of process control and executing the process control. The control section includes a counting section, a determining section and a process control management section. The counting section counts a number of printed sheets. The determining section determines on what time process control is to be executed form the counted number of printed sheets for each time zone. The process control management section manages the process control executed at an image forming section with the whole of the image forming apparatus.

Abstract: An image forming apparatus includes: a developing unit forming a toner image on a photoreceptor drum; a photo sensor detecting the image density of the toner image; an operation unit calculating a relational equation between the measurement detected by the photo sensor and the development potential; a storage unit storing the relational equation; and a control unit setting up a corrected development potential to obtain a target image density for the developing unit, based on the image density of toner image patches. When high-density correction is performed, the control unit forms a multiple number of toner image patches on the photoreceptor drum based on the corrected development potential that was obtained at the time of the previous high-density correction, and sets up a corrected development potential for obtaining the target image density, based on the multiple image densities of the multiple toner image patches.

Abstract: A fiber-producing apparatus includes a storage tank for storing a melt of a source material, an electric storage tank heater, a non-contact thermometer for the melt, a temperature control section which between the electric heater and its power supply, which controls the electric heater based on measurement results obtained from the non-contact thermometer to adjust the temperature of the melt, a nozzle for ejecting the melt in the storage tank, a collector for collecting a fiber, a voltage generator for electrifying the melt, and an insulating transformer disposed between the temperature control section and the electric heater. Since a closed circuit is formed by the electric heater, the electric heater power supply, the temperature control section, and the insulating transformer disposed therebetween, no high-voltage current flows into the electric heater power supply or the temperature control section. This allows stable spinning to be readily performed without breaking the apparatus.