Abstract: The present invention provides a technology by which a fairly good monochromatic image without any picture quality deterioration can be obtained from a color image original. An image forming apparatus according to the present invention includes a luminance information acquiring portion adapted for acquiring luminance information of pixels forming an image; a color information acquiring portion adapted for acquiring color information of pixels forming the image; and a luminance information correcting portion adapted for executing a correction of said luminance information of pixels acquired by said luminance information acquiring portion based on said color information of pixels acquired by said color information acquiring portion.

Abstract: The present invention provides a technology by which a fairly good monochromatic image without any picture quality deterioration can be obtained from a color image original.

Abstract: The present invention provides a technology by which a high quality monochromatic image without any picture quality deterioration can be obtained from a color image original. An image processing apparatus according to the present invention, comprising: a hue information acquiring portion adapted for acquiring hue information regarding pixels forming an image; a concentration information acquiring portion adapted for acquiring hue concentration information regarding pixels forming the image; and a deterioration determining portion, wherein, in the event that a rate of the number of pixels having the same hue and color concentration as those of pixels forming the image is higher than a predetermined threshold value based on the hue information and the hue concentration information thus acquired, the deterioration determining portion is adapted for determining the possibility of occurrence of picture quality deterioration to be high when the image is transformed into a monochromatic image.

Abstract: An image correction section in an image processing section performs a resolution-enhancing process for an input R signal from a RED photodiode array 9R1, an input G signal from a GREEN photodiode array 9G1 and an input B signal from a BLUE photodiode array 9B1, using an input K signal from a BLACK photodiode array 9K1. The image correction section outputs four signals: an Rc1 signal, a Gc1 signal and a Bc1 signal, which are subjected to the resolution-enhancing process, and the K signal that is used for the resolution-enhancing process.

Abstract: An image processing apparatus including an input section configured to receive color image signals, a printing color designation section configured to designate printing colors of two colors, a conversion section configured to convert the color image signals which are received from the input section to be converted to two-state signals in a dimension-dropped fashion, and a color allocation section configured to allocate the printing colors of two colors which are designated by the printing color designation section to the converted two-state signals.

Abstract: An image processing apparatus reads an original by R, G and B sensors and a monochromatic sensor, and includes Log conversion means for subjecting signals produced by the reading to Log conversion. When two-color printing is performed, Log conversion parameters are individually set for one of signals produced by the reading of the R, G and B sensors and for a signal produced by the reading of the monochromatic sensor.

Abstract: After an image compressed by a compressing portion is stored in a page memory, it is decoded by a decoding portion. A sub-scanning enlargement portion carries out sub-scanning direction enlargement processing upon the image decoded by the decoding portion and a printer prints out the enlarged image. At this time, the printer generates a printer synchronous signal each time when it scans an image formation object surface. A control portion provides the page memory, the decoding portion and the magnification changing portion with control signals so as to synchronize reading out of the image from the page memory, the decoding of the decoding portion and enlargement processing of the sub-scanning enlargement portion.

Abstract: First and second reading modules read first and second signals in the main scanning direction of the image of a document. The scanning module includes a carriage for relatively moving the first and second reading modules and the image of the document in a sub-scanning direction to make the modules scan the image. A scanning-control-condition selecting module selects scanning control conditions of the scanning module in accordance with a plurality of read magnifications preset as read magnifications of the document by the first and second reading modules. A first setting module sets the scanning control conditions to a plurality of control conditions in accordance with the read magnification of the first reading module. A second setting module sets the scanning control conditions to a plurality of control conditions in accordance with the read magnification of the second reading module.

Abstract: An image compression apparatus includes a color region judging section which judges a color region of a color image signal and outputs the judgment information as the judgment result, a switch which chooses one compression parameter from a plurality of compression parameters corresponding to the judgment information supplied from the color region judging section, and a compressing section which compresses color image signals corresponding to the compression parameter chosen by the switch, wherein image compression and decompression with general color balance satisfactorily adjusted by appropriately setting the compression ratio that varies in accordance with color regions as required.

Abstract: The invention relates to a pump motor for a vehicle, wherein when integrally forming the housing of a motor pump, in which the pump accommodating portion is made larger in diameter than the motor accommodating portion, by using metal dies, ventilation holes that communicate from the base end side of the housing to the motor accommodating portion are formed without making the motor accommodating portion of the housing larger in diameter, wherein projections are formed so as to be continuous to the base end side at the portion opposed to the pump accommodating portion on the outer circumferential surface of the housing, and the ventilation holes are formed to incline inwardly so that they reach from the base end side of the projections to the inside of the motor accommodating portion.

Abstract: The invention relates to a pump motor for a vehicle, wherein when integrally forming the housing of a motor pump, in which the pump accommodating portion is made larger in diameter than the motor accommodating portion, by using metal dies, ventilation holes that communicate from the base end side of the housing to the motor accommodating portion are formed without making the motor accommodating portion of the housing larger in diameter, wherein projections are formed so as to be continuous to the base end side at the portion opposed to the pump accommodating portion on the outer circumferential surface of the housing, and the ventilation holes are formed to incline inwardly so that they reach from the base end side of the projections to the inside of the motor accommodating portion.

Abstract: A terminal connector in an electric motor permits easy and smooth connection between a brush terminal and a power terminal by installing a case cover to a case frame. A support plate fixed to the case cover is divided into a terminal portion provided with a power terminal and an output shaft portion disposed on the output shaft side. The terminal portion is supported so that it is movable with respect to the output shaft portion. During assembly the terminal portion is movable to assure connection between the brush terminal and the power terminal.