Abstract: An image forming apparatus includes a first development unit, a second development unit, and a control unit. The first development unit forms a first developer image with a first developer absorbing a light having a prescribed wavelength. The second development unit forms a second developer image with a second developer permeating the light having prescribed wavelength therethrough. The control unit controls print of a background design image by the first development unit and print of a print image by the second development unit.

Abstract: An image forming device includes a density detector that detects image density, and a memory that stores information relating image density to dot size. When a dot size is specified, the image forming device automatically obtains the corresponding image density from the information in the memory, prints a test pattern, compares its density with the density corresponding to the specified dot size, and adjusts an image forming parameter until the density corresponding to the specified dot size is obtained. Dot size can be accurately adjusted in this way without the need for elaborate measuring equipment. In particular, the size of dots used to embed invisible information in images can be accurately controlled.

Abstract: An image forming apparatus includes a first development unit, a second development unit, and a control unit. The first development unit forms a first developer image with a first developer absorbing a light having a prescribed wavelength. The second development unit forms a second developer image with a second developer permeating the light having prescribed wavelength therethrough. The control unit controls print of a background design image by the first development unit and print of a print image by the second development unit.

Abstract: An image forming device includes a density detector that detects image density, and a memory that stores information relating image density to dot size. When a dot size is specified, the image forming device automatically obtains the corresponding image density from the information in the memory, prints a test pattern, compares its density with the density corresponding to the specified dot size, and adjusts an image forming parameter until the density corresponding to the specified dot size is obtained. Dot size can be accurately adjusted in this way without the need for elaborate measuring equipment. In particular, the size of dots used to embed invisible information in images can be accurately controlled.

Abstract: A fixing apparatus operates to fix a toner image on a recording medium. A heating member extends in a first direction transverse to a second direction in which a recording medium travels for fixing. A belt contacts the heater member to form a fixing region between the belt and the heating member. A pressure member presses the belt against the heating member. A pressing mechanism engages the pressure member to apply a predetermined pressure to the pressure member toward the fixing region in such a way that the pressure has a predetermined profile of distribution in the first direction. The pressing mechanism may be a rotatable member. When the rotatable member rotates, the surface of the rotatable member moves into pressure contact engagement with the pressure member.

Abstract: A fixing apparatus operates to fix a toner image on a recording medium. A heating member extends in a first direction transverse to a second direction in which a recording medium travels for fixing. A belt contacts the heater member to form a fixing region between the belt and the heating member. A pressure member presses the belt against the heating member. A pressing mechanism engages the pressure member to apply a predetermined pressure to the pressure member toward the fixing region in such a way that the pressure has a predetermined profile of distribution in the first direction. The pressing mechanism may be a rotatable member. When the rotatable member rotates, the surface of the rotatable member moves into pressure contact engagement with the pressure member.

Abstract: A novel process for the preparation of benzonitrile compounds useful for herbicides or their intermediates is provided. A process for the preparation of compounds of the formula (1), characterized in comprising reacting a compound of the formula (1a) with one or more cyanides selected from potassium cyanide, sodium cyanide and zinc cyanide in the presence of a metallic catalyst. In the scheme, X is hydrogen, fluorine or chlorine atom; Z is nitro, amino or C1-C4 alkylsulfonylamino group or the like; Y is fluorine, chlorine or bromine atom or the like; and Q is hydrogen atom, or nitro or amino group or the like.