摘要:
A sheet transporting device for use in an image forming apparatus includes a first and second sheet transporting members movable in widthwise directions of sheet to be transported, the first sheet transporting member for transporting the sheet in a lengthwise direction of the sheet in contact with one side end portion of the sheet, the second sheet transporting member for transporting the sheet in the lengthwise direction in contact with the other side end portion of the sheet; a moving mechanism for moving the first and second sheet transporting members in widthwise directions of the sheet: a sheet feeder provided at an upstream of the first and second sheet transporting members for holding the sheet temporarily and feeding the sheet to the first and second sheet transporting members; and a controller for controlling the moving mechanism and the sheet feeder to move the first and second sheet transporting members until they come into contact with the sheet while rendering the sheet feeder hold the sheet.
摘要:
An ink jet printing apparatus includes a sheet transporting mechanism for transporting a printing sheet along a vertical plane; a first printing head unit provided on a horizontal plane perpendicularly intersecting the vertical plane and having an ink emission portion for emitting ink to one side surface of the printing sheet; and a second printing head unit provided on a horizontal plane perpendicularly intersecting the vertical plane and having an ink emission portion for emitting ink to the other side surface of the printing sheet.
摘要:
A developing roller and a developing device are provided to enable a satisfactory developing operation. In order to accomplish this object, a roller main body of the developing roller is made of a roller base material containing acrylonitrile-butadiene rubber as a main component, and an adherence preventing coating layer is formed on the outer circumferential surface of the roller main body, thereby preventing the adherence of developer to the roller main body. Particularly, by setting the friction coefficient of the coating layer within a range of 0.5 to 0.95 inclusive and/or the glossiness thereof within a range of 4.5 to 8 inclusive, an occurrence of any of negative ghost, positive ghost and background fogging is prevented or suppressed to a level where no problem is presented in practical use.
摘要:
Ink comprising an aqueous medium, a water-insoluble colorant and a dispersant for dispersing the colorant in the aqueous medium, the dispersant being a water-soluble polymer obtained by polymerizing a monomer containing at least one monomer selected from acryloylmorpholine represented by the formula (1): ##STR1## and styrene sulfonate represented by the formula (2): ##STR2## [wherein M is an alkaline metal atom or an amino group] is provided. This ink is suitable for using for an ink-jet recording system because it provides a fast recorded image and is also superior in storage stability and jetting stability.
摘要:
Provided is a toner including a binder resin, a release agent, and a charge-controlling agent, wherein the toner includes toner particles having particle diameters of 3 micrometers or smaller, among the toner particles having particle diameters of 3 micrometers or smaller, a proportion of the toner particles having an average circularity of 0.70 or greater but 0.85 or less in all of the toner particles is 10% by number or greater but less than 20% by number and a proportion of the toner particles having an average circularity of less than 0.70 in all of the toner particles is 10% by number or less.
摘要:
Toner contains a mother toner particle containing a binder resin and a coloring agent and an external additive to cover the mother toner particle, wherein the external additive contains a resin particle, wherein the resin particle has an outer shell layer formed of silica or modified silica, wherein the resin particle has a non-spherical form with a shape factor (SF) of 1.20 or greater as calculated by the following relationship 1, Shape factor(SF)=[(Absolute maximum length of particle)2/Projected area of particle)]×(π/4) Relation 1.
摘要:
A toner for use in developing an electrostatic latent image is provided. The toner includes a colored particulate material including at least a binder resin and a colorant; and an external additive present on a surface of the colored particulate material and including a particulate crystalline hydroxyapatite. The particulate crystalline hydroxyapatite has an average aspect ratio of not less than 3 and less than 30.
摘要:
In a battery including a battery cell formed in a flattened substantially parallelepiped shape and a terminal contacting section electrically connected to the battery cell, at one end in the longitudinal direction of a face of the battery opposing to the face on which the terminal contacting section is provided, a projecting portion which projects in the longitudinal direction of the face is provided. Meanwhile, another projecting portion which projects in the longitudinal direction of the face is provided at the other end. The projecting portions may have projecting lengths different from each other or may have projecting lengths and projecting thicknesses different from each other. A charging apparatus into which the battery is to be installed includes an accommodating section for the battery which in turn includes projection accommodating portions configured to individually accommodate the projecting portions.
摘要:
A toner producing method is provided, which comprises preparing toner base particles in an aqueous medium, wherein the toner base particles comprise resin fine particles, and forming a coating layer on the surface of the toner base particles, wherein the coating layer is formed by attaching or coating a toner functional substance onto the surface of the toner base particles using at least one of supercritical fluids and sub-supercritical fluids.
摘要:
To provide a toner production process in which at least radically polymerizable monomers are polymerized in at least one of a supercritical fluid and a subcritical fluid to thereby produce toner particles, wherein a polymer of the radically polymerizable monomers is insoluble in at least one of the supercritical fluid and the subcritical fluid.