摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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. The apparatus further includes a size detecting device for reading by the photoelectrical conversion device the original sandwiched between the first and second areas of the original pressing surface and the transparent member so as to detect the size of the original based on the result of reading.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.