Abstract: Provided is an alkaline dry battery allowing suppression of polarization in pulse discharge under heavy load to improve discharge characteristics, and having high reliability in safety in case of short circuit. In the positive electrode, a calcium compound having a content of iron element of 150 ppm or less is added in an amount of 0.1 to 10 mol % with respect to a positive electrode active material, a nickel oxyhydroxide powder having 2.95 or more of an average nickel valence and 8 to 18 ?m of an average particle diameter is used, the weight ratio of the nickel oxyhydroxide powder and a manganese dioxide powder is in the range of 20:80 to 90:10.

Abstract: An alkaline dry battery of this invention includes: a cylindrical positive electrode mixture having a hollow and including at least one of manganese dioxide powder and nickel oxyhydroxide powder; a gelled negative electrode including zinc alloy powder; a separator interposed between the positive electrode mixture and the gelled negative electrode; a negative electrode current collector inserted into the gelled negative electrode; and a negative electrode terminal plate electrically connected to the negative electrode current collector. The gelled negative electrode is filled in the hollow of the positive electrode mixture with the separator interposed therebetween. The height L1 of the gelled negative electrode filled therein and the length L2 of the portion of the negative electrode current collector inserted in the gelled negative electrode satisfy the relation (1): 0.72?L2/L1?0.86.

Abstract: An image processing apparatus includes: a document type automatic classification section which determines whether input image data is image data for a text document or not; a newspaper document classification section which determines whether the input image data is image data for a newspaper document or not; a segmentation process section which identifies a page-background region in the input image data; and a color correction section for, if the input image data is classified as the text document and but not the newspaper document and if a page-background removal process is to be performed to the input image data, performing a first page-background removal process to the image data, but if the input image data is classified as the text document and the newspaper document, not performing the first page-background removal process to the image data. This makes it possible to prevent deterioration of visual sharpness of the text in the document image printed on the newspaper.

Abstract: In the case where an output value of a document reading section for at least any of R, G and B is out of a range between a first reference value and a second reference value due to a change in an output value of a reading device caused by an electrical noise, a change of supply voltage, etc. when a document is being read, a second color conversion table is created in accordance with the above change by expanding ranges in a first color conversion table, which ranges are around predetermined first and second reference values and included in regions of RGB color system associated respectively with predetermined tone values of Y, M and C. Using the second color conversion table thus obtained, a color conversion is carried out from the RGB color system into the YMC color system.

Abstract: Abstract Provided is an alkaline dry battery allowing suppression of polarization in pulse discharge under heavy load to improve discharge characteristics, and having high reliability in safety in case of short circuit. In the positive electrode, a calcium compound having a content of iron element of 150 ppm or less is added in an amount of 0.1 to 10 mol % with respect to a positive electrode active material, a nickel oxyhydroxide powder having 2.95 or more of an average nickel valence and 8 to 18 ?m of an average particle diameter is used, the weight ratio of the nickel oxyhydroxide powder and a manganese dioxide powder is in the range of 20:80 to 90:10.

Abstract: To provide an alkaline dry battery that is excellent in discharge characteristics under a heavy load after storage at high temperature and suppresses polarization in pulse discharge under a heavy load, used is a nickel oxyhydroxide which is obtained by oxidizing a nickel hydroxide having a half width of a (101) face of 0.6 to 0.8 deg./2? and a half width of a (001) face of 0.5 to 0.7 deg./2? in powder X-ray diffraction, and which has an average nickel valence of 2.95 or more and an average particle diameter of 8 to 18 ?m.

Abstract: Image processing method and image processing apparatus capable of reducing data volume further after JPEG compression are provided. RGB data is first converted into YUV data, and then scale conversion of luminance value and color-difference value of the YUV data is performed. Discrete cosine transform of the scale-converted YUV data is performed, and the data after the discrete cosine transform is coded into a Huffman code.

Abstract: The present invention includes a plurality of color correction tables respectively corresponding to a plurality of groups into which a page-background color is sorted. It is determined which group a page-background color of image data in a block that belongs to a page-background region belongs to. Consequently, color correction processing is performed by using a color correction table corresponding to the group determined. This makes it possible to carry out appropriate color correction processing according to the page-background color of an original document.

Abstract: This invention relates to an alkaline battery including: an electrode assembly composed of a positive electrode, a negative electrode, and a separator; a negative electrode current collector inserted in the negative electrode; an electrolyte of an alkaline aqueous solution contained in the electrode assembly; a battery can for accommodating the electrode assembly, the negative electrode current collector, and the electrolyte; and a sealing member for sealing an opening of the battery can. The ratio of the electrical capacity of the negative electrode to the electrical capacity of the positive electrode is 1.00 to 1.15. The volume obtained by subtracting the volume of the electrode assembly containing the electrolyte and the volume of the negative electrode current collector from the internal volume of the battery that is formed by the battery can and the sealing member constitutes 5 to 15% of the internal volume.

Abstract: In order to obtain an alkaline dry battery low in the possibility of electrolyte leakage and excellent in discharge performance as well as an alkaline dry battery which is not likely to cause an internal short circuit even with the use of a thin separator, as a zinc powder used is one including 65 to 75 wt % of first zinc particles having a particle size of larger than 75 ?m and not larger than 425 ?m, and 25 to 35 wt % of second zinc particles having a particle size of not larger than 75 ?m.

Abstract: In one embodiment, an image forming apparatus that digitally performs image processing and correction processing of image information, and calculates toner consumption by performing a pixel count of an input multilevel image, includes a counting portion that counts, pixel by pixel, the input signal levels of an input multilevel image; a weighting coefficient table that stores weighting coefficients corresponding to the input signal levels; a weighting calculation portion that obtains weighting coefficients corresponding to the input signal levels from the weighting coefficient table and performs weighting of each pixel when counting the input signal levels with the counting portion; and a rewriting portion that rewrites the weighting coefficients stored in the weighting coefficient table; in which a process control is performed when the calculated toner consumption reaches a predetermined value.

Abstract: The alkaline dry battery of the present invention has a battery case accommodating a positive electrode including manganese dioxide and nickel oxyhydroxide, a negative electrode including zinc, and an alkaline electrolyte; a sealing plate for sealing an opening of the battery case; and a sealing member disposed in between the battery case and the sealing plate. And the alkaline dry battery has a sealant layer including a blown asphalt and polybutene in between the battery case and the sealing member.

Abstract: An alkaline battery comprising: a positive electrode mixture comprising manganese dioxide and nickel oxyhydroxide as active materials; a negative electrode comprising zinc as an active material; and an alkaline electrolyte, characterized in that the potential of the manganese dioxide relative to a mercury/mercury oxide electrode in a potassium hydroxide aqueous solution having a KOH concentration of 40 wt % is 270 mV or higher.

Abstract: In order to obtain an alkaline dry battery low in the possibility of electrolyte leakage and excellent in discharge performance as well as an alkaline dry battery which is not likely to cause an internal short circuit even with the use of a thin separator, as a zinc powder used is one including 65 to 75 wt % of first zinc particles having a particle size of larger than 75 &mgr;m and not larger than 425 &mgr;m, and 25 to 35 wt % of second zinc particles having a particle size of not larger than 75 &mgr;m.

Abstract: The present invention provides an alkaline battery having good heavy-loading discharge characteristics even after long-term storage at high temperatures. The alkaline battery of the present invention comprises a positive electrode containing manganese dioxide and nickel oxyhydroxide as an active material, a negative electrode containing zinc as an active material, and an alkaline electrolyte. The positive electrode further contains at least one compound selected from the group consisting of an oxygen-containing zinc compound, an oxygen-containing calcium compound, an oxygen-containing yttrium compound, and an oxygen-containing titanium compound.