Kabushiki Kaisha Toshiba

Tokyo Shibaura Denki Kabushiki Kaisha

Nippon Petrochemicals Company, Limited

Nippon Carbon Co., Ltd.

Kitamura Valve Seizo Kabushiki Kaisha

Tutomu Saito

Hidekazu Sekizawa

Naofumi Yamamoto

Shuzo Hirahara

Kazuhiko Higuchi

Akito Iwamoto

Haruko Kawakami

Yuzo Koike

Hitoshi Nagato

Hideyuki Nakao

Toshikazu Matsui

Masafumi Mori

Tetsuro Itakura

Satoshi Takayama

Yoshinori Honguh

Koichi Ishii

Masataka Shiratsuchi

Chiaki Tanuma

Hideki Nukada

Isao Amemiya

Shiroh Saitoh

Yoichi Tokai

Kiyoshi Yamada

Mamoru Izumi

Shunsuke Hattori

Hisako Tanaka

Hitoshi Yoneda

Kumi Okuwada

Ryoji Yamaguchi

Masami Sugiuchi

Hiroshi Yamazoe

Fumihiko Murakami

Kei Shimura

Hidenori Yamaoka

Noriko Y Kudo

Atsuko Nakamura

Seizaburou Shimizu

The present invention provides a step difference detection apparatus including an illumination section for emitting illumination light, an incident section for making the illumination light emitted by the illumination section be incident on a plurality of small illumination regions on an object carried in a predetermined carrier direction from different directions, an image sensing section for inputting an image of the regions on the object illuminated with the illumination light which is made to be incident by the incident section, and a detection section for detecting a step difference on the object on the basis of the image sensed by the image sensing section.

Step difference detection apparatus and processing apparatus using the same

An ink-jet recording apparatus records an image onto a recording medium by flying an ink-droplet from an ink surface by a pressure of an ultrasonic beam. The apparatus including an ultrasonic generating element array having a plurality of ultrasonic elements arranged in an array for emitting ultrasonic beams, a driving device for applying a plurality of pulses having different phases from each other, and a converging device for converging the ultrasonic beams by interfering the ultrasonic beams with each other. The generating elements are simultaneously driven and sequentially shifted in an array direction, and the converging device converging the ultrasonic beams in a direction perpendicular to the array direction.

Ink-jet recording device having an ultrasonic generating element array

A computer-assisted holographic-display apparatus comprises a diffraction image generator which receives an input image signal representing an object and computes corresponding diffraction pattern with a first sampling density. An interpolation processor is connected to the diffraction image generator via an intermediate page memory. The interpolation processor subjects the diffraction pattern to the interpolation process to create an interpolated diffraction pattern with an increased second sampling density. An interference pattern generator is connected to the interpolation processor to compute an interference caused pattern between the interpolated diffraction pattern and a reference wave by converting amplitude and phase distributions of the input image signal into the intensity distribution. The interference pattern is displayed on a previously selected displaying device.

Computer-assisted holographic display apparatus

An image forming apparatus includes an image carrier, a means for forming colorant holding regions on the image carrier, the colorant holding regions having better ink or developing agent holding properties than the image carrier, a means for supplying a colorant to the colorant holding regions, and a means for transferring the colorant, held in the colorant holding regions, onto a printing medium.

Image forming apparatus having colorant holding regions and a colorant

A scanning optical apparatus is used as a recording apparatus having an optical system and a mechanical system and effecting desired recording on a photoconductor by irradiation of a beam. The apparatus comprises marks confirming the beam scanning position on the photoconductor, an error detecting unit for detecting the error of the scanning position from the optimal scanning position, which error is due to an optical factor or a mechanical factor, and a control unit for suitably correcting the scanning position of the beam in real time on the basis of a signal representing the detected error.

Scanning optical apparatus

A computer-generated hologram recording apparatus includes a diffraction image generator which receives an input image signal representing an object and computes a corresponding diffraction pattern with a first sampling density. An interpolation processor is connected to the diffraction image generator via an intermediate page memory. The interpolation processor subjects the diffraction pattern to the interpolation process to create an interpolated diffraction pattern with an increased second sampling density. An interference pattern generator is connected to the interpolation processor to compute an interference caused pattern between the interpolated diffraction pattern and a reference wave by converting amplitude and phase distributions of the input image signal into the intensity distribution. A multi-beam scan printing apparatus records the interference pattern on a previously selected recording medium for later reproduction by use of white light.

Computer-assisted holographic image formation technique which determines

A color image processing system which reads or receives a color image and outputs corrected color image to a display or printer. The system estimates the brightness of the original image and executes correction on the basis of this estimation. The system uses histograms to determine correction.

Brightness referenced color image correcting apparatus

A system comprises a form of a predetermined format having an area for the facial image, an area for a monochrome image constituting a part of the ID information and an area for a character image constituting the other part of the ID information, image reader for reading the image on the form to output image signals from the areas, processing units for processing the image signals from the areas output from the image reader to fit the recording format, and a recorder responsive to image signals processed by the processing units for recording the facial image, the monochrome image and the character image.

System for recording an image having a facial image and ID information

An apparatus for printing images on a booklet comprises, first and second paired pinch rollers for conveying pages of the opened booklet to a printing head, located between these paired pinch rollers, a rotatable platen opposed to the printing head and located between the paired pinch rollers, guide plate for guiding one page of the opened booklet to the platen, and a press member for fixing the free end of the one page to the platen. The second paired rollers hold the other page of the booklet but may slipe the page when the free end of the one page is fixed onto the platen thereby adding tension to the other page of the booklet as the platen is rotated. The layout of the recorded images are changed and then printed on the page.

Apparatus for printing images on booklets

A color multi-function type copying machine is disclosed which includes an image input unit for optically sensing an input image and generating an image signal. A function memory stores an ink color used in a color frame to be written in the input image in order to designate its partial image region and a specific image edit function assigned to the ink color and desired to be executed by an operator so that the ink color and the specific image edit function can be rewritten. When a closed loop-like color frame of a selected color is written in the input image, a color frame region detecting unit detects a shape and a color of the color frame. In response to the detection result, the memory is accessed to determine an image edit function corresponding to a first selected ink color of the detected color frame. A color edit unit executes one or a plurality of image signal processing corresponding to the determined image edit function for the input image signal. The edited image signal is supplied to a color printing unit via a signal processing unit and is reproduced therein.

Image signal processing apparatus for use in color image reproduction

A color copying machine has a scanning-type proximity linear image sensor unit for optically scanning an input image and producing an image read signal, and a color printer unit for producing a copy image corresponding to the input image at limited levels of printing density. An image type discrimination circuit receives the image read signal, and at least partially discriminates the type of image based on a pattern matching technique, thereby producing a discrimination signal for specifying the image type in a pixel region of a predetermined size of the input image. An adaptive signal processing circuit also receives the image read signal, and performs different image signal correction processing in accordance with the discriminated image type, thus producing a corrected image signal, which is supplied to a multi-value dithering processor. The multi-value dithering processing circuit performs multi-value dither processing of the corrected image signal, and produces a printer drive signal for defining a printing pixel pattern for each pixel of the input image.

Color image processing apparatus with image corrector

A color reading apparatus having a document table upon which the documents to be read are placed. The document table is formed of transparent glass which is illuminated by a light source, the light source being driven by a light source driver. An image of a document to be read is focused on an image sensor through a focusing lens and through first and second color separation filters. Each of the color separation filters have first and second filter elements which are formed on a transparent substrate and are aligned in the direction from which a photosensor array of the image sensor performs scanning. The image sensor is driven by a CCD driver and generates an image signal corresponding to the focused image. The CCD driver is controlled by a control circuit which is connected to a reference clock. The image signal output from the image sensor is amplified by an amplifier and converted to a digital signal by an A/D converter. The digital signal is then supplied to an image signal processing circuit. The two color separation filters are periodically moved such that the four filter elements are inserted between the lens and the image sensor in various combinations of two filter elements, thereby enabling at least three color image signals to be obtained from said image sensor.

Color image reading apparatus with two color separation filters each

A method and apparatus for performing a shading correction of image signals picked up by an optical detector array in which the period of x image signals can be prolonged by sampling of the image signal after reading reference signals and the speed of line memories can be reduced when carrying out an accumulative addition of picture elements, thereby enabling the use of low speed line memories.

Image correction method and apparatus with partial detector array

A color copier comprises a color line-image sensor, a matrix circuit, and a color conversion circuit. The color line-image sensor reads a color document, to output a plurality of fundamental color signals. The matrix circuit converts the fundamental color signals into a brightness signal and two color-difference signals. The color-conversion circuit converts the brightness and color difference signals into ink-amount control signals for controlling the amounts of color inks used in a color printer. In order to decrease the memory capacity of the color conversion circuit and faithfully reproduce dark colors, a nonlinear conversion circuit is provided at the preceding stage of the matrix circuit. The nonlinear conversion circuit is arranged to increase a change in level of an input signal in a low-level range, to an extent greater than that in a high-level range.

Color image-processing apparatus

A method and apparatus of electrophotography used for a printer or a copying machine, wherein a toner having no photoconductivity is applied on a surface of a photoconductive layer of a photoreceptor consisting of a transparent conductive layer and the photoconductive layer which are sequentially formed on a transparent substrate. The photoconductive layer is exposed from a side of the transparent substrate. Toner particles on an exposed region of the photoconductive layer are transferred to toner-receiving paper opposite the photoconductive layer so as to form a toner image. A process for developing a latent image can be omitted. In addition, a special toner such as a photoconductive toner having low sensitivity is not used, thereby forming a high-quality image.

Growing community of inventors

Yokohama, Japan

Tutomu Saito