摘要:
An image forming apparatus includes reading means for reading the density of a test pattern corresponding to each of plural recording elements of a recording head, the recording elements being arranged in an array, and the test pattern being recorded by the recording elements. An eliminating means eliminates error information, recorded from an area outside a test pattern are, from density information obtained by the reading means when the density of a test pattern end portion corresponding to an end portion of the array of plural of recording elements is determined. A means is provided for uniforming the image densities in correspondence with the plurality of recording elements based on density information from which the error information is eliminated by the eliminating means.
摘要:
An image recording apparatus comprises an interface for inputting a binary image signal, a binary-multi-value converter that converts the input binary image signal into a multi-value image signal, a corrector for correcting the converted multi-value image signal according to characteristic data of a recording element, and a driver for driving the recording element according to the corrected multi-value image signal, thereby performing image recording.
摘要:
A correction data production apparatus includes a detecting unit for reading a test pattern formed by a recording head having a plurality of recording elements constituting an array, and for detecting a density distribution of a range of the array of the plurality of recording elements, a corresponding unit for causing the density distribution detected by the detecting unit to correspond to the plurality of recording elements on the basis of a reference position where a density of an end portion of the density distribution reaches a predetermined threshold value, a production unit for producing correction data for an image formation density uniforming drive conditions in correspondence with the plurality of recording elements on the basis of the density distribution corresponded by the corresponding unit, and a changing unit for changing the threshold value in accordance with characteristics of the test pattern.
摘要:
An image recording apparatus includes a recording head in which a plurality of recording elements are arranged so as to form an image on a recording medium, a device for causing the recording head to print a predetermined test pattern, an image density reading device for reading the density of the test pattern formed by the recording head, an uneven image density correction device for correcting conditions for driving the plurality of recording elements in accordance with the result of reading, so as to make even the density of the image, a recording stabilizing device for stabilizing a recording operation performed by the recording head, and a control device for operating the recording stabilizing device before the test pattern is printed and operating the test pattern printing device after the recording head has been stabilized by the recording stabilizing device.
摘要:
An image recording apparatus includes a recording head in which a plurality of recording elements are arranged so as to form an image on a recording medium, a device for causing the recording head to print a predetermined test pattern, an image density reading device for reading the density of the test pattern formed by the recording head, an uneven image density correction device for correcting conditions for driving the plurality of recording elements in accordance with the result of reading, so as to make even the density of the image formed in accordance with the result of reading, a recording stabilizing device for stabilizing a recording operation performed by the recording head, and a control device for operating the recording stabilizing device before the test pattern is printed and operating the test pattern printing device after the recording head has been stabilized by the recording stabilizing device.
摘要:
An apparatus for transmission, reception and recording of an image, such as a facsimile apparatus, capable of correcting the unevenness in density or improper density resulting from fluctuation in the performance of the recording head of the receiving unit, with a limited amount of data transfer. At the start of communication, correction data for uneven or improper density of the recording head are sent from the receiving unit to the transmitting unit. The transmitting unit corrects the multi-value image data to be transmitted, based on the received correction data, and sends the corrected image data after conversion into binary state. The receiving unit receives the binary image data and effects image recording. The time and cost for data transmission can be reduced, as the correction is conducted at the transmitting unit and the data transmission can be made in binary data.
摘要:
A color image forming apparatus includes an image signal input portion which supplies three image signals C, M and Y associated with cyan, magenta and yellow; an image signal conversion processing portion which converts the image signals C, M and Y into six image signals associated with thick C and thin C, thick M and thin M, and thick Y and thin Y, respectively, by using a thick/thin sorting table; and a color masking processing portion which performs color masking process, and outputs converted six image signals associated with thick C to thin Y. The converted six image signals undergo a black generation process, a UCR process and a black printing process, and a binarization processing thereafter. This makes it possible to produce color images of high quality with high reproducibility even if the hues of N color materials, which belong to the same color family and have different densities, such as thin cyan and thick cyan, differ from each other to some extent.
摘要:
The present invention relates to image recording apparatus for performing image recording on a recording medium by using plural types of recording heads, each having a plurality of recording elements comprising an array. A test pattern forming unit for forming test patterns on the recording medium by using the plural types of recording heads, a reading unit for reading the test patterns recorded by the test pattern recording unit, and a correction unit for correcting image signals for driving the recording elements in accordance with the recording elements and types of recording heads on the basis of data read by the reading unit are included whereby image density is made uniform.
摘要:
A recording apparatus includes an ink jet recording head having plural ejection outlets and thermal energy generating elements provided for the respective ejection outlets; a limiter for defining a using range of the heat generating elements in accordance with image forming conditions, a recording head driver for supplying to the heat generating elements outside the using range defined by the limiter driving signals insufficient to eject the ink and for supplying to the heat generating elements in the using range defined by the limiter a driving signal sufficient to eject the ink in accordance with an image signal.
摘要:
An image forming apparatus has an image bearing member; a toner image forming device for forming a toner image on the image bearing member; a transfer charger for transferring the toner image from the image bearing member onto a transfer material; a first detector for detecting toner charge amount before image transfer onto the transfer material; a second detector for detecting the efficiency of the image transfer; and a controller for controlling a condition of image transfer operation in accordance with outputs of the first and second detector.