Abstract: Print data for display in which an operation screen of a multifunction periphery is described in a page-description language is created and outputted to an external memory medium. Specifically, the print data for display includes a screen description section 51 where an image is described by vector information and a function description section 52 where a function of the operation screen (operation when the operation button is pressed) is described by PJL. In another multifunction periphery, a bitmap image of an operation screen 60 is created and displayed by rasterizing the screen description section 51 of the print data for display read from the external memory medium, and the function of the operation screen is reproduced from information of the function description section 52.

Abstract: Combining section 21 creates the composite image data by combining the image data of the original image and the additional image, and log management section 22 stores the condition of composite images at the time of image combining as log information 40. Printer section 18 prints the composite image based on the composite image data, and a scanner section 16 optically reads the printed composite image. Judgment section 23 judges the condition of adding the additional image in the composite image (presence or absence of overlapping, etc.,) based on stored log information 40 and on the image data obtained by reading out the composite image, and notification control section 24 notifies the user of the judgment result either by displaying or by printing out.

Abstract: Detection section 22 detects the blank space area in each page for all pages of the document, determining section 23 determines image size for combining a designated stamp image in uniform size in all the pages of that document based on a detection result by detection section 22. Combining section 24 combines the stamp image determined by determining section 23 in each page of the document. For example, size of the maximum blank space area which can fit within blank space areas of all pages of the document in uniform size, is sought, image combining is carried out with an original size if the original size of the stamp image is not larger than the maximum blank space area size, and the stamp image is combined to be in a reduced size so that it fits within the maximum blank space area size if the original size of the stamp image exceeds the maximum blank space area size.

Abstract: Print data for display in which an operation screen of a multifunction periphery is described in a page-description language is created and outputted to an external memory medium. Specifically, the print data for display includes a screen description section 51 where an image is described by vector information and a function description section 52 where a function of the operation screen (operation when the operation button is pressed) is described by PJL. In another multifunction periphery, a bitmap image of an operation screen 60 is created and displayed by rasterizing the screen description section 51 of the print data for display read from the external memory medium, and the function of the operation screen is reproduced from information of the function description section 52.

Abstract: Detection section 22 detects the blank space area in each page for all pages of the document, determining section 23 determines image size for combining a designated stamp image in uniform size in all the pages of that document based on a detection result by detection section 22. Combining section 24 combines the stamp image determined by determining section 23 in each page of the document. For example, size of the maximum blank space area which can fit within blank space areas of all pages of the document in uniform size, is sought, image combining is carried out with an original size if the original size of the stamp image is not larger than the maximum blank space area size, and the stamp image is combined to be in a reduced size so that it fits within the maximum blank space area size if the original size of the stamp image exceeds the maximum blank space area size.

Abstract: Combining section 21 creates the composite image data by combining the image data of the original image and the additional image, and log management section 22 stores the condition of composite images at the time of image combining as log information 40. Printer section 18 prints the composite image based on the composite image data, and a scanner section 16 optically reads the printed composite image. Judgment section 23 judges the condition of adding the additional image in the composite image (presence or absence of overlapping, etc.,) based on stored log information 40 and on the image data obtained by reading out the composite image, and notification control section 24 notifies the user of the judgment result either by displaying or by printing out.

Abstract: In an electrostatic recording apparatus equipped with an image carrying member having a surface where there is provided an image forming region on which the toner image is formed and the other region located next to the image forming region in the axial direction on the surface, a cleaning blade made of an elastic material comes in contact with the surface and to clean toner remaining on the surface after the toner image is transferred. The cleaning blade comes in contact with the image forming region and the other region and an edge of a portion of the cleaning blade substantially coming in contact with the other region is hardened by heat.

Abstract: An charging apparatus includes a housing having a charging side adapted to face a photoreceptor; and a sharp-edged electrode charging member provided in the housing so that the photoreceptor is charged through the charging side by corona discharge from the sharp-edged electrode charging member. The charging apparatus further comprises an air introducing member provided a rear side opposite to the charging side and for introducing air into the housing.

Abstract: In an image forming apparatus which adjusts transferring condition according to an output signal from a moisture sensor, a control circuit has an off-time estimation device for estimating a power source interruption period from a surface temperature of a fixing roller and heat radiation elapsed time characteristics of the fixing roller and a time measuring device for measuring the time elapsed after the loading of a sheet feeding cassette. The control circuit further includes a moisture content converter for converting a total elapsed time after loading the sheet feeding cassette and for converting humidity into moisture content data of the transferring sheets. The control circuit controls the output from a high voltage power source of the apparatus, based on the moisture content data.

Abstract: An electrophotographic copying apparatus including a time counter to count a time during which transfer sheets are left in a stacker; a memory to store an output value of a humidity detector; a calculator to calculate a correction value for each transfer sheet in accordance with the output value of the humidity detector and the time counted by the time counter; and a controller to control a corona discharging output for each transfer sheet in accordance with the correction value.

Abstract: In a device for sensing a temperature of a fixing roller, a thermistor is provided on a flat upper surface of a support member made of a foamed silicone material, with a heat conductive material provided between them. A heatproof protective sheet is wrapped around so that the thermistor is partially sunk into the support member by the tightness of the wrapping. The heat conductive material is thereby deformed to the thermistor's shape. At the same time, the top part of the thermistor is always protruded from the upper part of the support member. A holder keeps this construction in contact with the circumferential surface of the fixing roller.

Abstract: This invention relates to a toner density control method for an image recording apparatus including the steps of: obtaining, as a sensitivity of a toner density sensor, a change amount in output voltage of the sensor with respect to that in control voltage for controlling a strength of the magnetic field generated by the sensor; calculating a ratio of the sensitivity of the sensor to that of a standard toner density sensor, thus obtaining a correction value; discriminating which one of plurality of ranges bounded in accordance with operational results of a value of the output voltage of the standard toner density sensor and the correction value of the output voltage of the sensor belongs to, and changing a replenishing amount of the toner on the basis of a discrimination result, and relates to an apparatus for practicing the method.

Abstract: In a copying apparatus provided with a platen glass located on the top of the apparatus, an exposure lamp moves under the platen glass in parallel with it for illuminating a document on the platen glass, mirrors move concurrently with the exposure lamp for illuminating an image carrier, and a cooling fan is positioned laterally to the moving paths of the exposure lamp and the mirrors for cooling the platen glass. The cooling fan is operated some time after the start of a copying operation, in accordance with light amount of the exposure lamp, the number of copies to be made, the document size, the image magnification, or by a combination of these factors.

Abstract: A copying machine for reproducing an image with toner on a recording sheet. The copying machine has a photoreceptor to hold a latent image corresponding to the image on its surface, in which the surface is charged to a predetermined electric potential before holding the latent image. The latent image is developed with toner, transferred onto the recording sheet, and fixed on the recording sheet with heat. The heater of the copying machine heats up the fixing unit to a predetermined temperature, and terminates heating the fixing unit when an operation of the machine is ended. The copying machine has a capability to detect a temperature of the fixing unit and determining an interval between the time when the operation is ended and the time when the operation is restarted, based on the determined temperature of the fixing unit.

Abstract: A copying apparatus is adapted to suppress the temperature rise of a platen glass by decreasing the copy speed from a first speed to a second speed after the apparatus has copied a threshold number of sheets in succession. The above parameters of the first speed, the second speed and the threshold number are basically predetermined based on the size of the copy paper and the magnification in copying, and modified based in accordance with the source voltage of a lamp to emit scanning light to scan an original on the platen glass.

Abstract: A toner density control method wherein a change in a toner density when a developer of a standard density is stirred, a correction coefficient is calculated from the change, and a toner density of the developer of the standard density under stable condition is calculated from the toner density of the developer which has been stirred and from the correction coefficient, in order to control the toner density.