Fuji Xerox Co., Ltd.

Mitsuo Shimizu

Norikazu Sakai

Izumi Takashima

Shinichiro Taga

Ken Kobayashi

Yoshiya Imoto

Atsumi Kurita

Kouichi Azuma

Takeshi Furuya

Katsuyuki Kouno

Kenji Suzuki

Seiji Honda

Yuichi Mikuni

Masahiko Miyata

Izumi Takahashi

Hironori Shimada

Shin Kondo

Nobuyuki Kodera

Toshihiro Maruta

Eiji Hamada

Toshiaki Kuraoka

Jun Kamei

Fumiya Shiseki

Naoto Terashima

An image reading apparatus includes a reading unit, an extraction unit and a generation unit. The reading unit outputs reference plate reading information. The extraction unit sets a pixel of the reference plate reading information as a notice pixel and repeatedly extracts one of the notice pixel as a target pixel until the number of the target pixels is more than a predetermined value when a ratio of a pixel value of the notice pixel to an initial value is more than a predetermined range. The generation unit generates correction information by substituting a pixel value of the target pixel with a correction value using the initial value when the extraction unit extracts all pixels of the reference plate reading information, and generates correction information by setting the pixel values of all the pixels as the initial value when the extraction unit does not extract all the pixels.

Image reading apparatus, image forming apparatus and computer-readable medium

An image reading apparatus includes an image reading member disposed in one of two regions that face each other with a transport path of a document therebetween, the image reading member being used for reading an image on the document, the image reading member including a light-receiving portion, a light-collecting member that collects reflected light reflected from the document onto the light-receiving portion, and a protruding portion that protrudes toward the transport path; and an opposing member disposed in the other of the two regions, the opposing member having a recess formed therein, the recess allowing the protruding portion of the image reading member to enter thereinto, the opposing member being disposed opposite the image reading member with the transport path therebetween.

Image reading apparatus

An image reading apparatus includes: plural image pickup elements which are arranged unidirectionally, each image pickup element including plural photoelectric transducers that convert reflected light from an original document into pixel signals, and a forwarding unit that serially forwards pixel signals acquired by the photoelectric transducers; a dividing unit that divides outputs of the photoelectric transducers into plural processing paths so that pixel signals acquired by photoelectric transducers located on both sides of a boundary between adjacent image pickup elements are included in the same division unit; and an interpolation unit that executes pixel interpolation, using the pixel signals acquired by the photoelectric transducers located on both sides of the boundary among the pixel signals divided by the dividing unit.

Image reading apparatus, image forming apparatus, image reading method and computer readable medium storing program thereof

An image reading apparatus includes a solid-state image sensor having a pixel array section in which pixels each including a photoelectric transducer are arrayed, a charge transfer register that transfers a signal charge transferred from each of the pixels of the pixel array section, and an output section that converts the signal charge transferred by the charge transfer register into an electrical signal and outputs the electrical signal; a driving unit that drives the charge transfer register according to a first timing signal, and the output section according to a second timing signal; and a power supplying unit that supplies power of different power systems to a circuit portion handling the first timing signal and a circuit portion handling the second timing signal of the driving unit.

An image reading device includes: a first light source that irradiates light on a first side of an object; a memory that stores a plurality of parameters for controlling an intensity of the light emitting devices, each of the plurality of parameters corresponding to one of a plurality of groups; a controller that controls an intensity of the light emitting devices in response to one of the plurality of parameters stored in the memory; a first image reading unit that reads reflected light from the first side and generates monochrome image data on the basis of the read reflected light; and a second image reading unit that reads reflected light from the second side and generates monochrome image data on the basis of the read reflected light.

Image reading device, image reading method and copier

A light source control apparatus that includes a light quantity detection unit that respectively detects light quantities of three colors of light emitted from a light source part. A light quantity ratio calculation unit that then calculates light quantity ratios of reflection light detected by the light quantity detection unit. When the light quantity detection unit detects light quantities of respective reference of the lights emitted from the light source part, a determination unit determines whether or not the light quantity ratios calculated by the light quantity ratio calculation unit are within a predetermined range. Responsive to the determination of the determining unit, a light quantity ratio adjustment unit adjusts the light quantity ratios of the lights emitted from the light source part on the basis of the light quantity of green-colored reflection light emitted from the light source part.

Light source control apparatus, image reading apparatus, image forming apparatus, medium storing light source part control program, and method for controlling of light source part by adjusting light quantity ratios

The present invention provides an image input apparatus. The image input apparatus includes a board having an image sensor; a supporting member having a first supporting portion and a second supporting portion; a first fastening member; and a second fastening member. The image input apparatus is characterized in that the board is rigidly secured on the first supporting portion of the supporting member with the first fastening member installed in the first supporting portion, and the board is movably supported on the second supporting portion of the supporting member by the second fastening member installed in the second supporting portion.

Image input apparatus

An image processing system integral with an image output unit having a power saving mode comprises a temperature detection section for monitoring a fuser temperature in a power saving mode or a rotation detector for a polygonal motor, a control section for outputting a control signal at a predetermined timing, and an energization control section capable of turning on/off output in response to the control signal from the control section. The timing of a power saving mode off signal output by the control section is when the fuser temperature lowers to a temperature or the polygonal motor take longer to ramp up than the time until the image output unit, after the power saving mode is released, is placed in a reprintable state becomes longer than the time required for setting up the data required when image processing is performed. Thus, the transition time to the copyable state as a whole is used efficiently, and power consumption can be reduced. The user saves power effectively by the operation in the power saving mode. When the power saving mode is released, setting up an image processing section does not cause the user to wait for copy start.

Image formation system

In an image reading apparatus arranged such that the supply of a drive clock signal CCD-CLK to a CCD solid-state imaging device is stopped during a standby period when an image is not read, during the standby period a high-level control signal CCDEN is generated by a clock-generating circuit, and is imparted to the CCD solid-state imaging device through an OR circuit and an inverter 14 so as to hold the drive clock signal CCD-CLK at a low level, thereby holding an output signal level of the CCD solid-state imaging device at a d.c. output bias level.

Image reading apparatus capable of rapid transition from a standby mode

An image recording apparatus comprising a line sensor for reading image data, a driver for outputting the image data read by the line sensor wherein the driver comprises an integrated circuit mounted on a circuit board, and a radiator system for dissipating heat generated by the driver, wherein the radiator system physically contacts the driver.

Radiator system in image recording apparatus

An image reading apparatus with a plurality of line sensors comprises a reference level adjusting circuit for adjusting a level of a dark output outputted from one of the line sensors to a reference level, and a level difference adjusting circuit for progressively adjusting to a minimum a dark output level difference between the reference level adjusted line sensor and a second line sensor adjacent to the former sensor, a dark output level difference between the second line sensor and a third line sensor adjacent to the second line sensor, and so on. When three or more line sensors are used, a level of a dark output outputted from one of the three line sensors which is located at the center of a sensor array of the three sensors is adjusted to the reference level. Alternatively, a level of a dark output outputted from one of three line sensors which is located at one of the ends of a sensor array of the three line sensors is adjusted to the reference level. With such an arrangement, even when a linear array of a plurality of line sensors is used, the resultant image is free from lines and stripes or density irregularity, because the level differences at the channel boundary levels are adjusted to be zeroed.

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Ebina, Japan

Mitsuo Shimizu