Abstract: A heater lamp for fixation and a method of producing the heater lamp are provided. The heater lamp includes a heat generator and a protective casing to cover the heat generator, in which an amount of carbon in an external surface of the protective casing as detected by an X-ray photoelectron spectroscopic method is equal to or less than 12 atomic %. The method of producing a heater lamp for fixation includes preparing a heat generator; preparing a protective casing to cover the heat generator; and heating the heat generator in an atmosphere containing oxygen gas.

Abstract: A heater lamp for fixation and a method of producing the heater lamp are provided. The heater lamp includes a heat generator and a protective casing to cover the heat generator, in which an amount of carbon in an external surface of the protective casing as detected by an X-ray photoelectron spectroscopic method is equal to or less than 12 atomic %. The method of producing a heater lamp for fixation includes preparing a heat generator; preparing a protective casing to cover the heat generator; and heating the heat generator in an atmosphere containing oxygen gas.

Abstract: In an image forming apparatus having a particular area setting unit for setting an arbitrary area of a document image as a particular area, an image processing unit (scanner/IPU section) receives, when a particular area is specified, image data for the particular area, and generates a plurality of monitor image data having been subjected to image processing by setting a different image quality mode for each particular area, and further an image forming unit (printer section) receives the plurality of monitor image data and forms a plurality of monitor images on the same transfer material by arranging the monitor images at different positions on the transfer material.

Abstract: In an image forming apparatus having a particular area setting unit for setting an arbitrary area of a document image as a particular area, an image processing unit (scanner/IPU section) receives, when a particular area is specified, image data for the particular area, and generates a plurality of monitor image data having been subjected to image processing by setting a different image quality mode for each particular area, and further an image forming unit (printer section) receives the plurality of monitor image data and forms a plurality of monitor images on the same transfer material by arranging the monitor images at different positions on the transfer material.

Abstract: In an image forming apparatus having a particular area setting unit for setting an arbitrary area of a document image as a particular area, an image processing unit (scanner/IPU section) receives, when a particular area is specified, image data for the particular area, and generates a plurality of monitor image data having been subjected to image processing by setting a different image quality mode for each particular area, and further an image forming unit (printer section) receives the plurality of monitor image data and forms a plurality of monitor images on the same transfer material by arranging the monitor images at different positions on the transfer material.

Abstract: When an ACC menu is called out on a liquid crystal screen of an operating section, the screen shown in FIG. 19 is displayed. When “Execution” of automatic color calibration for use of a copying function is selected, the screen in FIG. 20 is displayed. When it is desired to use the copying function, a gradation calibration table used when the copying function is changed with reference to the deference data. When Print Start key in FIG. 20 is selected, a plurality of density gradation patterns corresponding to colors of YMCK as well as to a plurality of image quality mode such as characters and pictures are formed on a transfer material. The density gradation patterns are previously stored and set in a ROM of an IPU. A write value for a pattern is changed according to a result of detection of the development characteristics.

Abstract: An image forming apparatus according to the present invention comprises a scanner for optically scanning and reading a draft image, an image processing circuit for converting input image signals from this scanner to output image signals by referring to an image signal conversion table and outputting the converted signals, a laser optical system for writing image information on a photosensitive drum in response to the output image signals, developing units for forming images with toner, an image signal generating means for generating a plurality of gradation patterns, and a CPU which prepares and selectors an image signal conversion table according to read signals for gradation patterns read by the scanner; wherein a read signal for a gradation pattern comprises a plurality of signals with different spectral sensitivity respectively, and said image forming apparatus has a RAM to store calibration factors for the plurality of factors with different spectral sensitivity respectively and calibrates read signals a