摘要:
An image forming apparatus including: an outputted image density control portion that forms a patch image and determines an outputted image density control condition based on a comparison result of the density of the patch image with a preliminarily set target value; a pixel count portion capable of counting the amount of image pixel at the time of image formation; a pixel count value accumulating memory portion that accumulates and stores the pixel count value; a toner supply portion; a toner supply amount measuring portion capable of measuring the amount of toner supplied to the developing device; a toner supply amount accumulating memory portion that accumulates and stores the toner supply amount; and a target value correcting portion that corrects the target value of the density of the patch image from the relation between a pixel count accumulating value and a toner supply amount accumulation value, is provided.
摘要:
An image forming apparatus including: an outputted image density control portion that forms a patch image and determines an outputted image density control condition based on a comparison result of the density of the patch image with a preliminarily set target value; a pixel count portion capable of counting the amount of image pixel at the time of image formation; a pixel count value accumulating memory portion that accumulates and stores the pixel count value; a toner supply portion; a toner supply amount measuring portion capable of measuring the amount of toner supplied to the developing device; a toner supply amount accumulating memory portion that accumulates and stores the toner supply amount; and a target value correcting portion that corrects the target value of the density of the patch image from the relation between a pixel count accumulating value and a toner supply amount accumulation value, is provided.
摘要:
There is provided an insulated wire including: a conductor wire; and a polyamide-imide insulation coating formed around the conductor wire, the polyamide-imide insulation coating being made from a polyamide-imide resin based insulating varnish, the varnish being synthesized by reaction of an isocyanate constituent and an acid constituent in a solvent, the isocyanate constituent including 5 to 50 mol % of 2,4′-diphenylmethane-diisocyanate having a flexible molecular structure.
摘要:
An insulating varnish includes a polyamide-imide resin including a repeat unit represented by Formula (1) below derived from a synthesis reaction between a resin component (X) and a diisocyanate component (Y). The resin component (X) is derived from a synthesis reaction between a diamine component including aromatic diamines including g a divalent aromatic group (R) including three or more aromatic rings, and an acid component in the presence of an azeotrope solvent. The diisocyanate component (Y) includes a 2,4′-diphenylmethane diisocyanate (Y1) and a 4,4′-diphenylmethane diisocyanate (Y2). In Formula (1), R denotes the divalent aromatic group including three or more aromatic rings, and m and n denote an integer of from 1 to 99.
摘要:
A porous photosensitive unit has a transparent conductive layer formed on a surface of a transparent substrate. A photoconductive layer is formed on a surface of the transparent conductive layer. A porous insulating layer formed on a surface of the photoconductive layer has a plurality of holes for holding conductive color particles. The plurality of holes includes a first hole and the adjacent second and third holes. An upper or screen electrode is formed on a surface of the porous insulating layer except where the holes are formed. The photosensitive unit includes an optical arrangement in which, when a light source emits light to cause conductive color particles to fly out of the first hole only, the light exposes a region, within the photoconductive layer, which substantially coextends with a surface portion of the photoconductive layer that is exposed by the first hole.
摘要:
A insulated wire includes a conductor, and an insulating coating on a periphery of the conductor. The insulating coating includes an insulating film formed by applying and baking a polyester imide resin insulating coating material, and the insulating film has a relative permittivity of less than 3.5 both in a dried state and in a moisture-absorbed state. The insulating film is formed by applying and baking a polyester imide resin insulating coating material including an imide dicarboxylic acid and an alcohol component, the imide dicarboxylic acid being obtained by synthesizing a diamine component including aromatic diamine having not less than three aromatic rings and an acid component including aromatic tricarboxylic acid anhydride.
摘要:
There is provided an insulated wire including: a conductor wire; and a polyamide-imide insulation coating formed around the conductor wire, the polyamide-imide insulation coating being made from a polyamide-imide resin based insulating varnish, the varnish being synthesized by reaction of an isocyanate constituent and an acid constituent in a solvent, the isocyanate constituent including 5 to 50 mol % of 2,4′-diphenylmethane-diisocyanate having a flexible molecular structure.
摘要:
A drive roller is rotated and a high voltage periodically alternating between plus and minus based on the potential of a conductive portion of the drive roller 2 is applied by a high voltage power source 4 to an electric charger, so that the surface of the drive roller 2 is charged plus and minus alternately. Since the drive roller 2 is charged, a sleeve 1 is absorbed to and held by the drive roller 2 so as to be rotated and fed together with the drive roller. Moreover, the sleeve 1 is separated from the drive roller 2 by a separator so as to obtain a sag. When the drive roller rotates further, the sleeve 1 is again absorbed to and held by the drive roller 2 charged periodically plus and minus, so as to be rotated together with the drive roller. Thus, the present invention eliminates scratches which may be caused by friction on a developing roller or on a photosensitive body surface and also eliminates contamination with oil.
摘要:
An insulating coating material includes a polyamide-imide resin insulating coating material, and surface-treated inorganic fine particles dispersed in the polyamide-imide resin insulating coating material. A viscosity measured by an E-type viscometer is 1000 to 4000 mPa·s at 30° C. and at a shear rate of 200 s−1 and 4000 to 12000 mPa·s at 30° C. and at a shear rate of 1 s−1. An insulated wire includes a rectangular conductor, and an insulating layer formed on the rectangular conductor and including the insulating coating material.
摘要:
An image recording apparatus and an image recording method enable high density and without blank space between pixels printed on a recording medium to be printed. The image recording apparatus comprises a multi-hole photoreceptor provided with a transparent conductive layer, photoconductive layer, and multi-hole layer having a plurality of holes arranged with equal interval, on a transparent supporting structure, and an opposite electrode arranged so as to be opposite to the multi-hole photoreceptor with interval while inserting a recording medium. Conductive colored particles which fly in order from a plurality of holes of the multi-hole photoreceptor form respective pixels by driving the multi-hole photoreceptor corresponding to the pixel.