Abstract: The verification system of this invention comprises an image forming apparatus 1 having verification function and a card reader 2 for reading a user ID from a card. The image forming apparatus 1 is capable of performing short-range radio communication with a portable instrument 3. The portable instrument 3 receives a polling command transmitted by the image forming apparatus 1 and sends back its own identification code if it is located near the image forming apparatus 1. The image forming apparatus 1 permits usage of all the functions thereof if it verifies that user is an officially permitted person according to user ID read by the card reader 2 and the identification code sent back from the portable instrument 3. Consequently, there is provided a verification system having a high security level and convenient for use or a verification system which permits usage of its apparatus and other related devices within an appropriate range depending on the security level of a verified method.

Abstract: An image processing apparatus for outputting an image by a printer or a display is provided, in which color reproducibility in the image output of plural pages becomes uniform. The apparatus comprises an image memory for memorizing image data of all pages of one output job that is given to an output device, decision portion for deciding whether the image data of all pages are data within a color reproduction range of the output device or not. A color compression process is performed for the image data of all pages uniformly only when it is decided that the image data of all pages are not data within the color reproduction range of the output device.

Abstract: An image processing apparatus is provided in which the frequency of undesired delay of the image output can be reduced. The image processing apparatus comprises an image processor for performing a process defined by a parameter on the image data of the received job, a decision portion for deciding a state of the image data of the received job, and a controller for setting a parameter in accordance with the state that is decided by the decision portion if an interval between the received job and the previously received job is longer than a predetermined time, and for setting the parameter that was used in the last job despite the state that is decided by the decision portion if the interval is not longer than the predetermined time.

Abstract: The verification system of this invention comprises an image forming apparatus 1 having verification function and a card reader 2 for reading a user ID from a card. The image forming apparatus 1 is capable of performing short-range radio communication with a portable instrument 3. The portable instrument 3 receives a polling command transmitted by the image forming apparatus 1 and sends back its own identification code if it is located near the image forming apparatus 1. The image forming apparatus 1 permits usage of all the functions thereof if it verifies that user is an officially permitted person according to user ID read by the card reader 2 and the identification code sent back from the portable instrument 3. Consequently, there is provided a verification system having a high security level and convenient for use or a verification system which permits usage of its apparatus and other related devices within an appropriate range depending on the security level of a verified method.

Abstract: An image processing apparatus is provided in which the frequency of undesired delay of the image output can be reduced. The image processing apparatus comprises an image processor for performing a process defined by a parameter on the image data of the received job, a decision portion for deciding a state of the image data of the received job, and a controller for setting a parameter in accordance with the state that is decided by the decision portion if an interval between the received job and the previously received job is longer than a predetermined time, and for setting the parameter that was used in the last job despite the state that is decided by the decision portion if the interval is not longer than the predetermined time.

Abstract: An image processing apparatus is provided in which the frequency of undesired delay of the image output can be reduced. The image processing apparatus comprises an image processor for performing a process defined by a parameter on the image data of the received job, a decision portion for deciding a state of the image data of the received job, and a controller for setting a parameter in accordance with the state that is decided by the decision portion if an interval between the received job and the previously received job is longer than a predetermined time, and for setting the parameter that was used in the last job despite the state that is decided by the decision portion if the interval is not longer than the predetermined time.

Abstract: An apparatus, a method and a system for image processing with a color correction device are provided in which the number of times of automatic execution of calibration is reduced and the performance of an image output apparatus is used adequately. The apparatus includes a color space conversion portion 110 for converting input image data D1 into data D1s of a standard color space and a reproduction range decision portion 111 for deciding whether the input image data D1s that were converted into the standard color space are within a reference range of a color reproduction in an image output. If it is decided that the input image data are out of the reference range, the calibration is performed so that the color reproduction range is made close to the reference range.

Abstract: A data communication apparatus and method are provided in which a faithful color reproduction is enabled in the reception side. The data communication apparatus comprises a first communication portion for a first form of image data communication, a second communication portion for a second form of image data communication and a transmission controller for selecting one of the first form and the second form in accordance with information indicating a color reproduction range of image output in the other end. The image data are transmitted to the other end by the first or the second communication portion corresponding to the selected form.

Abstract: An image output system is realized in which many operations are not required for the color reproduction. As a preprocessor of an output device 20 for reproducing an image, an image processing apparatus 100 is provided that comprises attribution decision portions 152 and 153 for deciding the attribution of input image D1, a color decision portion 151 for deciding whether the input image is an image within a color reproduction range or not, a color range change portion 120 for changing the color range of the input image when it is decided that the input image is not an image within the color reproduction range and a process contents switching portion 123 for switching the change contents of the color range in the color range change portion 120 in accordance with the decisions of the attribution decision portions 152 and 153.

Abstract: An image read apparatus includes a group of CCDs reading out a document image, a data processing unit, a line buffer to delay data to obtain data of the same pixel, a comparison unit comparing data of the same pixel, a data table in which a threshold value that becomes the reference of comparison is stored in correspondence with each type of mode, a threshold value set unit referring to the data table to set the threshold value, a determination unit receiving the comparison result with the threshold value from the comparison unit to determine and control data to be sent downstream, and an averaging unit averaging the data sent from the determination unit to output the average as image data. An image read apparatus is provided that can prevent generation of a black streak or a white streak on a readout image caused by the presence of dust at the readout position, and that can improve the picture quality of the entire image.

Abstract: The verification system of this invention comprises an image forming apparatus 1 having verification function and a card reader 2 for reading a user ID from a card. The image forming apparatus 1 is capable of performing short-range radio communication with a portable instrument 3. The portable instrument 3 receives a polling command transmitted by the image forming apparatus 1 and sends back its own identification code if it is located near the image forming apparatus 1. The image forming apparatus 1 permits usage of all the functions thereof if it verifies that user is an officially permitted person according to user ID read by the card reader 2 and the identification code sent back from the portable instrument 3. Consequently, there is provided a verification system having a high security level and convenient for use or a verification system which permits usage of its apparatus and other related devices within an appropriate range depending on the security level of a verified method.

Abstract: During reading process, an image reading unit read a white pressing plate (reference member) under a state where no original exists between the white pressing plate and an original glass plate. On the basis of the read image data, it is judged whether dirt is detected on the glass plate or not. If dirt is detected, a page in which a black line appears is determined. Information of the page is displayed on a display section. An original of the page is reread by the image reading unit.

Abstract: In an image reading device, a document is read while being illuminated by a fluorescent lamp and then an image signal is output. A light quantity of the fluorescent lamp illuminating the document is detected with a specified timing. Then, a fluctuation in light quantity of the fluorescent lamp is corrected based on the detected light quantity. The above timing of light quantity detection is changed according to a light quantity variation characteristic, a duration of an illuminating time of the fluorescent lamp, the number of document read operations, or a set copying mode.

Abstract: The present invention has the objective of providing an image reading device capable of normally excellent reading of document images without influence from a soiled or damaged glass document platen, and eliminates the influence of a soiled or damaged glass surface of a document platen by normally reading document images using a new glass surface which is neither soiled not damaged by moving the document platen via a platen moving lever.

Abstract: The present invention relates to image forming apparatuses such as copying machines, facsimile devices, and complexes thereof. When the image is produced as rotated by 90 degrees or 270 degrees by the rotary processing part 307 while the scanning speed of the original document is finely adjusted so as to be lowered, the control of the magnification is carried out so that the produced image will be contracted in the main direction and enlarged in the sub direction by an mount corresponding to the amount of adjustment made on the operating panel. On the other hand, when the scanning speed of the original document is adjusted to a higher level, the control of the magnification is carried out so that the output image may be enlarged in the main direction and contracted in the sub direction by an amount corresponding to the amount of adjustment to be made on the operating panel.

Abstract: In a shadow process mode, a scanner reads out an original with a first exposure lamp in a first scanning operation. The readout image data is stored in an image memory via an I/O control unit. In the second scanning operation, the scanner reads out the original with a second exposure lamp having an illumination direction different from that of the first exposure lamp. The image data read out in the second scanning operation and the data stored in the image memory are subtracted for each pixel by a subtractor. The difference thereof is compared with a predetermined value in a comparator. The compared result is output to a selector, whereby a desired image data is provided to a printer processing unit via the I/O control unit.

Abstract: The present invention relates to an image processing apparatus for carrying out a variable scale magnification processing for contracting or enlarging an original image. The image processing apparatus including a variable scale moving unit for increasing pixels in accordance with a variable scale magnification in order to enlarge the original image includes a smoothing processing unit for smoothing pixel data. The smoothing processing unit detects the number of increased pixels for each pixel by an increased pixel number determining unit, so as to smooth image data output from the variable scale magnification moving unit by employing smoothing filters of a matrix size selected in accordance with the result of the detection. This results in an image processing apparatus that can prevent a degradation in image quality by an appropriate smoothing processing independently of whether a variable scale magnification in enlargement is integer or not.

Abstract: An image reading apparatus according to the present invention includes a image reading device including a color image sensor in which three CCD arrays arranged parallel with each other for reading different color components included in an image of the original, respectively, are formed integrally on one chip, wherein each of the CCD arrays reads the image of the original by a predetermined number of pixels to provide image data, a scanning device for moving the color image sensor and the image of the original relatively in a direction vertical to the CCD arrays, a color discriminating device for discriminating the color of the image of the original for every pixel on the basis of the image data from at least two of the CCD arrays included in the image reading device, and an output device for outputting the image data from particular one of the CCD arrays included in the image reading device and a discrimination result from the color discrimination device in synchronism with each other.

Abstract: An image reading apparatus includes an original placing platen formed of a rectangular transparent member on which an original is placed; a photoelectrical conversion device for reading an image of the original-placed on the transparent member; an original pressing plate having an original pressing surface for pressing the overall surface of the original placing platen, the original pressing surface having a first area formed at a portion opposing a first side of the transparent member and a second area formed at a portion opposing a second side crossing at a right angle to the first side of the transparent member. The first and second areas are determined as a predetermined color by the photoelectrical conversion device.

Abstract: In an image reading device for reading an image of an original document and outputting a density data indicating the density a color discriminating data indicating the color of each picture element, the image reading device comprising: an image reading section for reading the image with at least two color characteristics and outputting a first image data used to generate the density data and a second image data used to generate the color discriminating data, the second image data having a lower picture element density or a fewer number of density level than the first image data; and a color discriminating section for outputting the color discriminating data on the basis of the second image data.