Abstract: An ink jet recording sheet is disclosed. The sheet has a porous ink receptive layer containing alumina particles or alumina hydrate particles and a hydrophilic binder which has undergone crosslinking employing ionization radiation.

Abstract: A production method of a porous medium comprising a non-water-absorptive support and a porous layer provided on the support is disclosed.

Abstract: An electrophotographic photoreceptor having an interlayer and a photosensitive layer on an electroconductive substrate, wherein the interlayer comprises any one of 1) an N-type semiconductive particle containing at least one of transition metals having an atomic number of 21 to 30, 39, 41 to 48 and 57 to 80, the total amount of the transition metals having an atomic number of 21 to 30, 39, 41 to 48 and 57 to 80 being from 100 ppm to 2.0% by mass, or 2) a metal oxide particle containing a silicon atom in a bond energy spectrum by the X-ray photoelectron spectroscopy at a ratio represented by the following Formula (1): Formula (1) 0.02≦Si/M≦0.55 Si: a peak intensity of a silicon atom among the bond energy spectrum, and M: a peak intensity of a metal atom among the bond energy spectrum.

Abstract: In order to reduce time required to perform error diffusion processing on one line of image data, one line of multi-tone image data 100 is divided into two or more segments of image data 102 and 103 with an overlapped region 101 provided across the boundary. The two or more segments of image data 102 and 103 are subjected to error diffusion to create binary image data 104 and 105 corresponding to the divided image data 102 and 103, respectively. Then the binary image data 104 and 105 are merged to form binary data 106 corresponding to the original image data of one line. Upon merging the binary image data, binary data b2 obtained from the divided image data 102 located upstream of the line before divided in the direction in which the error diffusion processing progresses is used as binary data corresponding to the overlapped region.

Abstract: A data recording apparatus comprising a read section for reading image data and/or audio data recorded on a first recording medium, and a write section for recording the aforementioned read image data and/or audio data on a second recording medium. This data recording apparatus is further provided with an identification information determining section for determining whether identification information is recorded in the aforementioned recording medium or not, to ensure that, only when the aforementioned identification information determining section has determined that the identification information is recorded, the write section records the read image data/audio data on the second recording medium.

Abstract: An image forming apparatus includes: a display section for displaying an initial screen for performing function selection and a setting screen, which is displayed by performing the function selection a plurality of times from the initial screen, for performing a setting input of an image forming condition, wherein a short cut button for displaying the setting screen is displayed on the initial screen after when the setting input of the image forming condition is performed on the setting screen.

Abstract: A definition code generating section generates a character string formula including character string variables for defining at least a job name and color. Receiving the monochromatic color data files of multiple colors, a defining section defines the identification information contained therein, using the aforementioned character string formula. This information outputted thereof is received by a determining sections, which identifies monochromatic color data files of predetermined types of colors carrying the defines same job name and organizes them into one file.

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source for emitting first light flux having a first wavelength; a second light source for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system having an optical axis and a diffractive portion, and a photo detector; wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted

Abstract: An image forming system, having means for storing usage histories of latent image carriers, developer, or the like and maintenance cycles of image forming apparatuses and having a function for selecting image forming apparatuses outputting an image based on the usage history data or the maintenance cycles, in order to achieve uniform output image qualities. By managing the usage histories so as to achieve approximately the same deteriorated conditions of the latent image carriers of the image forming apparatuses, the image forming apparatuses can be put in the same condition and thus the output image qualities can be approximately the same in the image forming apparatuses. Additionally, the maintenance cycles can be adjusted to be approximately the same in the image forming apparatuses. Otherwise, maintenance periods can be controlled so as not to overlap in the image forming apparatuses.

Abstract: An optical system for use in an optical pickup apparatus comprises a first optical surface having a superposition type diffractive structure including a plurality of ring-shape zones which are formed concentrically around an optical axis, wherein each ring-shaped zone is composed of a plurality of stepped sections stepwise, and a second optical surface having a diffractive structure including a plurality of ring-shaped zones which are formed concentrically around an optical axis, wherein each of the plurality of ring-shaped zones are divided by a stepped section to generate a diffractive light ray of diffractive order whose absolute value is not small than 1 for the light flux.

Abstract: A molding die includes a pair of molding die members for forming a molding cavity that molds molded products and a holding member that holds therein the molding die members slidably, wherein a pressure-transfer medium supplied to the clearance between the molding die members and the holding member makes the molding die members to be slid and held in the holding member while the molding die members and the holding member are on the non-contact state.

Abstract: A color adjustment method having the steps of: generating a gradation correction curve for each color in such a way that the values of four colors, CMYK or three colors, CMY to be input into the first color image output apparatus are input values for the correction curve, while the values of four colors, CMYK or three colors, CMY to be input into the second color image output apparatus are output values for the correction curve; and performing conversion of C, M, Y and K values by the gradation correction curve so that the second color image output apparatus reproduce colors of the first color image output apparatus; wherein, the correction curve is generated based on a first color chart from the first color image output apparatus and a second color chart from the second color image output apparatus.

Abstract: For an actuator that uses a piezoelectric element and drives a movable member by displacing a driving member in sawtooth-like fashion, there is provided an actuator driving circuit that can attain the desired performance while achieving a reduction in power consumption. The actuator moves the driving member and the movable member relative to each other by applying a sinusoidal wave signal to the piezoelectric element, which expands and contracts by application of a driving signal, and thereby causing expanding/contracting displacements expanding and contracting at respectively different speeds in the driving member, and the driving circuit for the actuator is characterized in that a capacitive element, which is connected in series to a parallel circuit containing an inductive element connected in parallel to the piezoelectric element, is provided between the piezoelectric element and a voltage applying circuit.

Abstract: An management system of an image forming device, which is structured by the image forming device and a management device for managing the image forming device through a communication network; the management device comprising a communication unit for sending a data of a computing parameter for conducting an image processing and a data of a set value indicating a computing procedure of the image processing, to the image forming device; the image forming device comprising: an image processing circuit for conducting the predetermined image processing for an image data; and an operating frequency measurement unit for measuring an operating frequency of the image processing circuit; wherein the image forming device conducts an operating test of the image processing circuit by the operating frequency measurement unit on the basis of the sent data, and sends a test result of the operating test to the management device.

Abstract: A package comprising: (i) a plurality of ink-jet recording sheets stacked one on top of the other, wherein each of said ink-jet recording sheet has an ink receptive layer as a top layer; (ii) a protective sheet which is placed on a top ink-jet recording sheet of said plurality of ink-jet recording sheet, said protective sheet having a water-resistant surface, said water-resistant surface facing said ink receptive layer of said top ink-jet recording sheet, wherein said water-resistant surface has a center-line mean roughness (Ra) of 0.2-3 &mgr;m measured based on JIS B 0601 with a reference length of 2.5 mm and a cut-off value of 0.8 mm; and (iii) an envelop sheet surrounding said plurality of ink-jet recording sheets and said protective sheet thereby forming said package.

Abstract: Disclosed is an oxetane compound represented by the following formula (I), (II), (III), (IV) or (V): 1

Abstract: An ink jet recording liquid exhibiting superior image color and improved color image fastness is disclosed, comprising a medium and an oil-soluble dye represented by the following formulas.

Abstract: A silver halide light-sensitive color photographic material comprising a substrate having thereon layers which include a light-sensitive layer, wherein the light-sensitive layer contains a compound which is capable of producing a chemically inert and a colorless compound by chemically bonding with an aromatic amine color development agent which remains in the light-sensitive layer after the color photographic material has been subjected to color development using a development solution which contains the development agent, a total amount of a hydrophilic binder contained in the layers which are provided on the silver halide emulsion layer side of the substrate is less than or equal to 6.3 g/m2, and a total thickness of all the layers is less than or equal to 7.0 &mgr;m.

Abstract: An ink jet printer comprises a cap for covering nozzles for jetting ink, wherein the cap has a suction opening and a atmosphere-communicating opening in the neighborhood of its one end portion in the lengthwise direction, and an ink absorption body formed in the cap, wherein the height of the ink absorption body in the area other than the neighborhood of the suction opening is higher than its height in the neighborhood of the suction openings, and carries out a restoration processing through suctioning ink from the nozzles.

Abstract: In a recording medium conveyance device for conveying a recording medium gripped between a conveyance roller which is driven by a driving device and has a number of protrusions provided on its surface and a pressing roller arranged opposite to the conveyance roller, there is further provided with a pressing force varying device for varying the pressing force of the pressing roller acting on the recording medium, wherein the recording medium conveyance device varies the conveyance amount of the recording medium by varying the penetration amount of the protrusions into the recording medium through varying the pressing force of the pressing roller by the pressing force varying device.