Abstract:
A printing head (1) with printing elements (11) arranged in a main direction (12) is moved to and fro linewise (5) in relation to a substrate (2), whereby, where necessary, printing points (DP) are generated according to predetermined printing data (VD) at raster positions (RP) of a print line (DZ) consisting of microlines (MZ1, ..., MZ8). The printing points (DP) are allocated to a first (DM2) and at least a further, supplementary printing pattern (DM2), whereby one of the printing patterns (DM1, DM2) is generated during each printing head movement. The printing points (DP) are allocated to the printing patterns (DM1, DM2) alternately microlinewise in such a way that adjacent printing points (DP) in a microcell (MZ1) are contained in different printing patters (DM1, DM2) between the generation of the printing patterns (DM1, DM2) o f a microline (MZ1), the substrate (2) is preferably advanced in relation to the printing head (1). Adjacent printing points (DP) in a microline (MZ1) are thereby generated during different movements of the printing head and by different printing elements (11-1, 11-5). Errors peculiar to individual printing elements and line advance faults are thus distributed very evenly over the printed image.
Abstract:
Among various embodiments of the present disclosure, image scanning can be performed by scanning an object in a forward direction and capturing a first image of the object, scanning the object in a reverse direction and capturing a second image of the object, and combining the first image and the second image to produce a single image.
Abstract:
A recording apparatus configured to cause a recording head to move and scan in a reciprocating manner includes a buffer configured to store raster data including multivalued data, a table in which a plurality of dot patterns is defined for a value of the multivalued data and including a dot pattern corresponding to the value, a first information storage unit configured to store an initial value of the dot pattern according to a direction of scanning by the recording head and the value of the multivalued data, a second information storage unit configured to store information indicating an empty raster in which every multivalued data of a raster has a value of “0”, a determination unit configured to execute evaluation of the value of the multivalued data and determination as to whether a raster is the empty raster for each raster, a raster control unit configured to execute control for storing the initial value on the first information storage unit, control for storing the information on the second information storage unit, and control for storing multivalued data on the buffer according to a result of the evaluation and the determination by the determination unit, and a generation unit configured to, based on the initial value stored by the first information storage unit and the table, read the multivalued data from the buffer and generate a dot pattern based on the read multivalued data.
Abstract:
A disclosed optical scanning device includes a light beam generating unit configured to generate a light beam; a light beam deflecting unit configured to receive the light beam and deflect/emit the light beam with a deflecting mirror; a light beam ON/OFF control unit configured to control the light beam generating unit so that the light beam deflected by the light beam deflecting unit is turned ON/OFF in a particular light beam scanning region while the light beam is being reciprocally scanned; and a light beam scanning time measuring unit configured to obtain a measurement value by measuring a time at which the light beam passes a reference point provided on an edge part of the entire light beam scanning region that is away from a center part of the entire light beam scanning region. Timings at which the light beam is turned ON/OFF are controlled in accordance with the measurement value.
Abstract:
Disclosed are a light scanning unit and a method of synchronizing the scanning operation of such light scanning unit. The light scanning unit includes a deflection, mirror that is driven to oscillate so as to deflect and scan a light beam in a bidirectional scanning path. The synchronization, of a scanning operation may be made at least in part in consideration of the direction of flow of the current that is supplied to drive the deflection mirror to oscillate.
Abstract:
A scanning system is adapted to scan an image beam across a photoconductive surface. The scanning system includes an oscillating mirror and is operable to generate an image beam and to reflect the image beam off the oscillating mirror to bidirectionally scan the image beam across the photoconductive surface and thereby discharge regions on the surface. The system is further operable to dynamically scale an intensity of the image beam as a function of a position of the image beam on the photoconductive surface.
Abstract:
A recording apparatus causes a recording head to scan a recording medium to perform recording on an area within the recording medium and on an overflow area adjacent to and outside the area within the recording medium, and includes a feed control unit for controlling feed of the recording medium in a feed direction different from a scanning direction of the recording head, such that the recording medium is fed during a period between a previous scan to perform recording and a next scan to perform recording, and controlling at least one of starting and stopping of the feed of the recording medium during a period in which the recording head scans the overflow area.
Abstract:
A method for scanning a document and printing a copy with improved efficiency is provided. The method includes scanning the document with a first resolution, determining a content type of the scanned document while scanning at the first resolution and determining an optimum scanning resolution based on the content type. Rescanning the document at the optimum resolution if the first resolution does not correlate with the optimum resolution, selecting a print setting based on the content type and printing the copy using the print setting.
Abstract:
In order to shorten a time for preliminary original reading which is performed prior to reading of an original image, an image reading apparatus of the present invention scans an original mounted on a platen glass by a scan optical system that moves to the original and reads a scanned image of the original by using a CCD sensor, the apparatus having a function to perform a preliminary original read operation for automatically deciding a density of the original before the reading operation of the original image, wherein the preliminary original reading is performed while the scan optical system in an idling state is moving from a read standby position to an image read operation start position; a white background level correction operation of the CDD sensor is performed after collection of original density data by the preliminary original read operation; and a result of the correction is reflected on the original density data obtained by the preliminary original reading to control the decision of the original density.
Abstract:
An image processing method performs processing to generate image data based on input data and output the image data to an image forming device. The image forming device includes a printing head in which first nozzles for ejecting color ink drops are arranged in a symmetrical formation to forward and backward scanning directions and second nozzles for ejecting black or gray ink drops are arranged in an unsymmetrical formation with respect to the first nozzles. The image forming device is adapted to perform a uni-directional printing or a bidirectional printing with the printing head. In the image processing method, a black generation processing to the input data is performed, and when performing the black generation processing, a black-generation start level for the bidirectional printing is delayed to a shadow-side gradation level from a black-generation start level for the uni-directional printing.