Abstract:
When recording original data having a size greater than the height of a recording head, high-quality recording can be performed without unnatural connecting portions by performing smoothing processing for the original data. The original data is divided so as to have a size smaller than the height of the recording head, in such a manner that parts of divided data overlap with each other.
Abstract:
Scan exposure in a row or swath scanner is controlled by pulsing light sources with pulses that are separated by dark intervals from each other--and from the detector readout periods. Detector sequencing is thereby made independent of the velocity of the pixel-line advance mechanism. Different pulse widths for different colors provide color correction without calculation, or regularize color-space conversion calculations where needed. In a swath scanner, known technology of printing modes is imported into the scanning context. Order of pixel columns within each swath is reversed for printing--permitting use of novel configurations such as a dual-parallel-flatbed copier in which a single common scan-and-advance mechanism simultaneously transports the scan sensor and printheads. To produce mirror images, this configuration is also used without column reversal. In addition to red, green and blue light sources, an infrared source is used for reading invisible indicia that identify forms or media types. The scan sensor is also used for auxiliary printing functions.
Abstract:
A scanner for reading an original image by hand scanning usually detects scanning positions of the reading sensor on the original image sequentially and stores read image data into image memory according to said scanning positions. However, an area in which the image data is not stored may appear when free scanning is done such that its pixel density exceeds a permitted limit. This area, if it appears, degrades the quality of the image which is reproduced in the image memory. The scanner of the invention detects the area in which the image data has not been stored, and prevents the appearance of such an area in the resulting image. It also judges an abnormal state that is beyond the prevention capacity and informs the operator of such a state. Furthermore, when it detects a scanning error caused by sensor problems, it halts storing the image data and informs the operator of the scanning error.
Abstract:
An image pickup apparatus comprises image pickup means for converting an object image formed on an image pickup surface to an image signal and object information detection means for detecting information associated with the object. Control means for determines a dividing number of areas into which the object image to be picked up by the image pickup means is to be divided on the basis of the information from the object information detection means and controls the image pickup means to perform the image pickup operation of the object image by executing image pickup operations a number of times, the number of times being equal to the dividing number. Preferably, the information detection means detects at least one of a size and a density of the object.
Abstract:
Picture signals representing a stored image stored in an image storage medium are generated. A stimulation beam having a monotonic non-uniform intensity distribution and a sensor array including a rectangular array of pixels each generating an image signal are provided. Each pixel generates in response to light. An image of an object area of the stored image is formed on the sensor array to define in the object area a fixel corresponding to each pixel of the sensor array. The object area is a small fraction of the area of the stored image. The stored image is stimulated by forming a stimulation spot substantially centered in the object area of the stored image using the stimulation beam. The stored image is scanned with the object area and the stimulation spot. This defines fixels in the stored image and generates a picture signal for each fixel. The picture signal for each fixel represents the accumulation of light emitted by the fixel in response to the stimulation spot. In scanning the stored image, the position of the object area and stimulation spot is successively changed relative to the stored image along a first axis to scan a slice of the stored image. Successive slices of the stored image are scanned along a second axis, substantially orthogonal to the first axis. At each position of the object area in the stored image, the sensor array is controlled to generate an image signal in response to the light emitted by each fixel in the object area. Finally, for each fixel in the stored image, all the image signals generated by the sensor array are accumulated to generate the picture signal for the fixel.
Abstract:
A scanner frame comprises a vertical track which is slidably attached at one end thereof to a horizontal track. The horizontal track is attached to a drawing board or any other suitable flat surface. An optical imaging device (i.e., an optical scanner) is slidably attached to the vertical track. A marker strip comprising a series of bars of uniform pitch are disposed on a surface of the horizontal track along the length thereof. These bars are detected by a sensor assembly disposed on the vertical track. Another marker strip comprising a series of bars of uniform pitch are disposed on a surface of the vertical track along the length thereof. These bars are detected by a sensor assembly disposed on the scanner. During use, a drawing to be scanned is secured on a board, the vertical track is positioned at the left-most position and the scanner is positioned at the upper end of the vertical track. Start and finish index marks are established, either by manual selection, or by automatic reading of existing lines of the drawing, e.g. boarders. Once the extents (i.e., the start and finish index locations) are entered, the system has been initialized. Scanned segments, which are a relatively small portion of the original drawing being scanned, are stored in blocks of data which are sequentially appended by the system software to a previously scanned block of data. These blocks of data are assembled with reference to a physical location which is measured by the sensor assemblies and the corresponding marker strips. Each block is stored with a header code identifying it. Accordingly, the system software will correctly position each block according to that block's header code. This is why the order in which the document is scanned is not important.
Abstract:
By increasing the printing-plate-making speed in a laser-direct-drawing-from-computer type plate making system, the plate size can be increased without large-scale expansion of the plate making facilities, and the operation time of the rotary press is thereby improved to increase the number of newspaper prints. The invention provides a printing-plate-making method for newspaper printing designed to enable figure-drawing corresponding to drawing image signals from an electronic computer by laser beam. A plurality of laser scanning heads are provided in an electrostatic charging and figure-drawing image signals from the electronic computer to draw similar or different figures on a plurality of plates in parallel. The plates thus drawn are then subjected to a developing and fixing section, an elution section, post-treatment section, etc.
Abstract:
A photographic system for accurately reproducing encoded information onto a recording medium is disclosed. The system includes an image/light source, a feedback sensor, a lens assembly, a controller, a recording medium assembly and a reading sensor, whereby encoded information is decomposed into sections, adjusted, and transmitted such that the sections are correctly aligned and smoothly joined into a final reproduced image. According to the present invention, encoded information can also be digitized and read.
Abstract:
An image input processor having a detector which detects whether or not the rate of the width of a character or characters are cut off from the read character information with respect to the readable width being over a predetermined value. Also, the image input processor has a printer which prints the cut-off character or characters when the detected rate is over the predetermined value, and prohibits printing of the cut-off character or characters when the detected rate is less than the predetermined value. Whereby necessary information and unnecessary information can be distinguished from each other based on the degree of the read image information that is cut off.
Abstract:
There is provided an information processing apparatus of a code-compressed image information for use in a facsimile apparatus or an electronic file. This apparatus comprises: an image memory to store the coded image data; a printer to print the image data; a counter to read out the data from the memory and to count the number of lines of the image data; and a controller to control the printer so as to allow the image data to be divided and printed in response to the count value of the counter. The size data of the image data is compared with the count value and when they coincide, the controller controls the printer. If the image data exceeds the line number of one standard scale recording sheet, the printer is controlled so as to divide and record the image data on two or more recording cut sheets.