Abstract: A control method for removing scanning discontinuity in scanners. The relationship between a driving motor and an elastic body such as a leather belt or a steel cable linked to the chassis inside a scanner is investigated so that time constants for achieving system stability are found. Through setting the time constants, the forwarding and reversing motion of the chassis is controlled so that scanning discontinuity due to stopping and restarting is reduced.

Abstract: A paper-separating plate is adapted for a paper-separating mechanism having a paper-separating roller. The paper-separating plate placed around a side of the paper-separating roller comprises a main body and a cushion. The main body has a surface and a plurality of grooves and the grooves are positioned on the surface. The cushion is positioned on the surface of the main body and covers the grooves. The cushion positioned over the partial grooves is elastically pressed onto the paper-separating roller. The grooves, neighboring one another or each other, linearly extend in a direction substantially parallel with the axis of the paper-separating roller. Besides, the cushion is made of flexible material and the main body is made of rigid material.

Abstract: A single step multi-section exposure scanning method for a scanner. The scanner includes a photo-sensor and a stepper motor. The photo-sensor has N rows of sensor cells that correspond to each primary color. The scanning device is driven forward an exposure distance for each revolution of the stepper motor. The single step multi-section exposure scanning method includes the following steps. First, the photo-sensor moves forward one exposure distance. One row of sensor cells is exposed after moving every 1/Nth of the exposure distance. Thereafter, analogue voltages obtained through the exposed row of sensor cells are transmitted to an analogue/digital converter. The above process is repeated until the entire document is scanned.

Abstract: A reflection mirror support structure, applied to support a reflection mirror of an optical scanner. Using three points or a single point and a line to construct a plane, projecting rib and projecting point are formed on a carrier to hold the reflection mirror. The image distortion caused by bending the reflection mirror and twist deformation because of structures not being parallel to each other is improved.

Abstract: A bi-directional transmission mechanism is provided for an image scanner to increase the scanning speed. The bidirectional transmission mechanism provides a first transmission device for driving a sheet table in a first direction, and a second transmission device disposed below the sheet table for driving an image reading device in a second direction. The two transmission devices are moving towards opposite directions and at the same time when the scanning operation is enabled. The present invention mainly encompasses a sheet table for placing a document sheet. A first transmission device is provided for supporting and connecting to the sheet table for driving the sheet table from a first direction to a second direction. An image reading device disposed under the sheet table reads the image information of the document sheet.

Abstract: A stepping motor controlling device and method are provided. The controlling device comprises a control circuit and a serial in-parallel out interface. The control circuit includes a motor controlling signal generator and a parallel in-serial out interface. The motor controlling signal generator generates a set of controlling signals in parallel and via the parallel in-serial out interface sends the set of controlling signals to the serial in-parallel out interface. The serial in-parallel out interface receives the set of control signals in sequence and then outputs them in parallel to a stepping motor driver for driving a stepping motor to a predetermined step.

Abstract: An apparatus for capturing a document with a plurality of compression models comprises an image-processing system and an image-capturing system. The image-processing system is for accepting a request of setting the compression models for the document and processing the data of the document according to the compression models, wherein the request is from an exterior electric device connected to the apparatus. The image-capturing system is for capturing the data of the document, and is connected to the image-processing system and comprises multitudes of optic devices. The method for capturing the document with these compression models comprises accepting a request of setting the compression models for the document; capturing the data of the document; and processing the data of the document with these compression models.

Abstract: An optical scanner that may assemble the lens design for varying the focus and resolution, having a light source, a reflection compound mirror, a charge coupled device, a basic objective lens and a compound lens. The basic objective lens is designed by simulation software. According to the lens design theory, the compound lens is designed. By incorporating the basic objective lens and the compound lens, different resolutions such as 1200 dpi, 1600 dpi and 2400 dpi of the optical scanner are obtained without redesigning the lens device, the current specification of the optical scanner is also varied.

Abstract: In accordance with the present invention, a method for automatically identifying a scan area by a scanner is disclosed. The method comprises steps of scanning an original comprising an object, identifying the original to establish a location and a profile of the object in the original, displaying a preview window corresponding to the original, wherein a location and a profile of a confined area is exactly the location and the profile of the object, receiving a framed area selected from the preview window by user, wherein a portion of the framed area beyond the confined area is automatically removed to generate a scan area, and scanning the scan area. The present invention can also extend to a method for selecting a scan area by a user and a scanner with a feature of automatically identifying a scan area.

Abstract: An Optic Reflection device, for application as Reflectors in the Light Track of optic installations, more specifically, as Reflector for single or multiple reflections in the scanner, apparatus of optics industry. Designed trapezoidal as opposed to rectangular or otherwise configuration pursuant to prior arts. In a preferred embodiment, the application is in the form of a reflector of single reflection to incident light beam; in another preferred embodiment, the application is in the form of reflector permissive of multiple reflections. Design pursuant to the trapezoidal optic reflector pertaining to the invention can substantially reduce space required of Light Track in an optic system, and therefore commensurably volume and weight claimed in the entire optic system, which facilitates compact design of the products and installation of other devices or utilities in the space so saved in the entire optic system.

Abstract: A structure for protecting and guiding a flat cable connected between a traveling module and a protective cover of a scanner is disclosed. The protective structure includes an anti-bending member mounted onto the traveling module for preventing the flat cable from being over-bent at its first end. A guide channel member is disposed on the protective cover under the flat cable and along the moving direction of the traveling module for guiding the flat cable during moving of the traveling module and preventing the flat cable from being swung left and right. The second end of the flat cable is extended into the protective cover via a protective sheath fitted on the cover for preventing the second end of the flat cable from excess bending angle and keep the flat cable smoothly moving without deflection.

Abstract: An automatic paper feeder for an image-scanning device with a pressure-adjustable mechanism for adjusting the paper feeding roller of the automatic paper feeder is disclosed. A pressure from paper sheets stacked on a paper tray of the automatic paper feeder is detected by a paper tray pressure detecting mechanism and transferred to a roller pressure adjusting mechanism to change a pressure between the paper feeding roller and a paper separating plate and adjust a feeding angle of the movable paper tray.

Abstract: A locating structure for a dual-mode optical scanning device including a transparency scanning mode and a reflective scanning mode is disclosed. The locating structure includes at least one locating posts formed on a bottom surface of the transparency illumination module and at least one locating holes formed on an object focal plane of the scanner frame corresponding to the locating posts. When the transparency illumination module is closed onto the scanner frame, by means of the locating structure, the deflection between the transparency illumination module and the scanner frame can be limited, so as to accurately locate the transparency illumination module on the scanner frame and enhance the quality of scanned image.

Abstract: A charge coupled device (CCD) with multi-focus lengths is provided. The arrays of optical sensors with a plurality of transparent plates in parallel disposed thereon are disposed on a substrate. By way of either of changing the thicknesses of the transparent plates and changing the position levels of the arrays of the optical sensors, each of the arrays of the optical sensors obtains a different focal length. And thus, the depth of focus of the present charge coupled device is improved.

Abstract: A Reflective and Penetrative Scanning Apparatus has a body, a first ambulatory reflection module, a second ambulatory reflection module, a lens assembly, an image shooting unit and an adjustment means. The body incorporates a Reflective Script Platform and a Penetrative Script Platform. The First Ambulatory Reflection Module is equipped with two Light Sources and two lenses with which to produce two different Light Paths such that once the switching goes to the First Light Path, a light that is emitted from the Light Source will travel by way of the Reflective Script Platform to the Lens Assembly and the Image Shooting Unit, to execute Reflective Scanning operation and when the switching goes to the second Light Path, another light that is emitted from the Light Source will travel by way of the Penetrative Script Platform to the Lens Assembly and the Image Shooting Unit, to execute Penetrative Scanning Operation.

Abstract: An automatic paper feeder with an integrated paper presser and stopper is disclosed. The integrated paper presser and stopper includes a fixing section, a paper pressing section downward extended from the fixing section at an inclined angle toward a paper-out end of the paper tray, a first bent section formed at a lower end of the paper pressing section to define a first gap, a paper stopping section downward extended from the first bent section at an inclined angle toward the paper-out end of the paper tray, and a second bent section formed at a lower end of the paper stopping section to define a second gap which is smaller than the first gap.

Abstract: In accordance with the present invention, an operating procedure of a scanning system that can get images automatically is disclosed. The operating procedure comprises steps of scanning at least one original to get an image which can display all content of this original, displaying the image, receiving a portion of image that selected by the user, and outputting the selected image. The present invention can also extend to a scanning method for using a scanning system with one-scan-and-done feature and free of identifying original's attribute feature. And a scanning system with one-scan-and-done feature and free of identifying original's attribute feature.

Abstract: A method for dynamic calibration uses multi-sampling point distribution to analyze different distributions, then dynamically decides the total number of points counted and the best calculating method for the final calibration in order to get the most stable, accurate, and best calibrating result with different scanners and situation. Method of calculation include direct averaging, weighed average, multi-fixed-range averaging, and standard deviation range averaging.

Abstract: A transmission mechanism for optical scanner includes a screw bar, a first nut, a second nut, a retainer, a first spring and a second spring. The screw bar has external threads engageable with internal threads of the first and second nuts. The first nut is close to the transmission direction. The retainer is hollow and has a front and a rear wall to hold the first and second nut therebeween. The first nut makes contact with the front wall. The first spring is located between the first and second nut. The second spring has a stronger force than the first spring and is located between the second nut and the rear wall. The spring force keeps the rear side of the internal threads of the first nut make close contact with external threads of the screw bar, and the front side of the internal threads of the second nut make close contact with the external threads so that the first and second nut may be free from vibration during transmission operation.

Abstract: The present invention proposes a method for detecting the relative location of an image reading head and a light source, and the method is especially designed for the application in a scanning system for transparent originals. The method in the present invention, for detecting the relative location of an image reading head and a light source in an image reading system, includes several steps as follows. At first, the light source is positioned to a first detecting point in a scanning region of the image reading system. The image reading head is moved to pass through the first detecting point while keeping the light source fixed at the first detecting point. At the same time, the scanned images are recorded through the moving process of the image reading head. Finally, the scanned images is processed to provide functional information of the image reading head and the light source.