Abstract: An image signal modulation method is applicable to an optical scanner to obtain compensated image when the light source is not stable during starting. It first scans a document to get corresponding optoelectronic signals of pixels at different positions. Then, it transfers the optoelectronic signals to a memory unit for adjusting a shading table and parameters of an ASIC to compensate the brightness of each pixel, resemble a condition of stable luminosity, and generate an updated shading table. Finally, it compensates the optoelectronic signals of each corresponding pixel according to the updated shading table, and obtains the scanned image data. The compensation solves the problem of luminosity changing and variation during starting of scanning so that an instant use of scanner is available.

Abstract: A shaft sleeve structure for use in a module capable of being slid along a guiding shaft and the manufacturing method thereof are provided. The shaft sleeve structure includes: a passage punched through the module for receiving the guiding shaft and providing a first opening segment, a second opening segment and a central segment, wherein the first opening segment has an internal diameter larger than that of the second opening segment, and the central segment has an internal diameter gradually tapered from the first opening segment to the second opening segment; a first bearing having an external diameter mounted in the first opening segment and having an internal diameter for slidably receiving therein the guiding shaft; and a second bearing having an external diameter mounted in the second opening segment and having an internal diameter for slidably receiving therein the guiding shaft.

Abstract: A scanning apparatus adaptable for two resolutions has two carriages with different resolutions. The carriages are disposed in the cover and the scanning bed of the scanning apparatus respectively. Each carriage includes a lens and a sensing module and the sensing module and the lens are at a fixed distance. The optical lengths between the lenses and the documents to be scanned are different so that the resolution produced by the carriage in the cover is different from the resolution produced by the carriage in the scanning bed.

Abstract: An optical module apparatus equipped with a latch coupler includes a carrier movable on a guiding rod. The guiding rod is coupled with a turnable check member. When the optical module apparatus is on a flat and using position, the check member may pass through a check trough to enable the carrier to move freely and linearly and reciprocally. When the optical module apparatus is mounted in an inclined manner and moved away from the using position, the check member is subject to the gravity force and turns in parallel with the direction of the gravity force, and is latched on the check trough to restrict the moving range of the carrier. Thus the optical module apparatus may be prevented from moving by external forces during transportation and avoid being damaged.

Abstract: An optical module apparatus equipped with a latch coupler includes a carrier movable on a guiding rod. The guiding rod is coupled with a turnable check member. When the optical module apparatus is on a flat and using position, the check member may pass through a check trough to enable the carrier to move freely and linearly and reciprocally. When the optical module apparatus is mounted in an inclined manner and moved away from the using position, the check member is subject to the gravity force and turns in parallel with the direction of the gravity force, and is latched on the check trough to restrict the moving range of the carrier. Thus the optical module apparatus may be prevented from moving by external forces during transportation and avoid being damaged.

Abstract: A locking apparatus for a movable carry module, comprises a controller using to fix the movable carry module of an electric device. The controller has a movable locking shaft normality stretch in the movable carry module, and applies to fix the movable carry module. The electric device supplies the electric power to the controller when receiving the external electric power, and then the locking shaft departs from the movable carry module, such that the movable carry module can move freely.

Abstract: An optical scanner includes a first reference white board and a second reference white board perpendicular to two sides of a glass window that holds an object to be scanned. When the optical scanner is powered on, the optical module scans the first reference white board and the second reference white board to obtain data of image quality test and brightness variations in Y direction first, and through software compensation and correction, to obtain a normal digital image data thereby to achieve rapid preview and scanning.

Abstract: A scanner which replaces CCFL with LED as a light source so as to solve the problem of excessively long warm-up time of CCFL in the prior art is provided. Meanwhile, objects as rod lens, reflectors, brightness enhancement films (BEF), or diffusers may be applied to enhance and even the brightness of the LED.

Abstract: A glass mount used to mount a glass plate of a scanner is assembled on an inner surface of a top lid of the scanner. The top lid comprises at least a first lateral side, a second lateral side and a third lateral side. The first lateral side and the second lateral side are adjacent to each other and have a plurality of supportive portions to support two lateral sides of the glass plate. The third lateral side has at least one flexible portion to press on the another side of the glass plate.

Abstract: A method for controlling ON/OFF of LED in a scanner which replaces CCFL with LED as a light source is provided so as to solve the problem of excessively long warm-up time of CCFL in the prior art. Meanwhile, to achieve intermittent heat dissipation, LED is switched ON/OFF according to the frequency of the scanner receiving optical signals.

Abstract: A glass supporting device of a scanner comprises an upper cover, a lower cover, a front cover, and a glass sheet. The upper and lower covers, and the front cover can be integrated. The lateral sides of the upper cover are installed with a plurality of sliding tracks. The sliding tracks and the edges of the top of the upper cover are formed with a shape track. Therefore, the glass sheet can be slid into the track manually for being positioned therein. The track serves for supporting the glass sheet. In the present invention, the glass sheet is easily assembled and detached. The upper cover and glass sheet is updated independently. Therefore, the assembling work is performed quickly and the cost for detaching parts are low.

Abstract: A shaft sleeve structure for use in a module capable of being slid along a guiding shaft and the manufacturing method thereof are provided. The shaft sleeve structure includes: a passage punched through the module for receiving the guiding shaft and providing a first opening segment, a second opening segment and a central segment, wherein the first opening segment has an internal diameter larger than that of the second opening segment, and the central segment has an internal diameter gradually tapered from the first opening segment to the second opening segment; a first bearing having an external diameter mounted in the first opening segment and having an internal diameter for slidably receiving therein the guiding shaft; and a second bearing having an external diameter mounted in the second opening segment and having an internal diameter for slidably receiving therein the guiding shaft.

Abstract: An optical image and transmission composite assembly comprises an optical module, a transmission unit and a guiding unit. The transmission unit and the guiding unit are arranged on the optical module, wherein the optical module is guided and moved by the engagement of a plurality of wheels and tooth bars, or by a female guiding stage and a male guiding stage fit with the female guiding stage. The assembling effort and cost of the scanner using the optical image and transmission composite assembly can be reduced.

Abstract: A scanner consists of a base and a lid pivotally engaged with each other. The base includes a light generator and a reflective document scan module. The lid contains a penetrative document scan module. Light generated by the light generator projects to a scanned document located between the base and the lid. Depending on whether the scanned document is a reflective document or a penetrative document, the light may be reflected to the reflective document scan module, or penetrate the penetrative document to reach the penetrative document scan module. Thus the invention has two optical paths for scanning reflective documents and penetrative documents. And the two scan modules may provide different resolutions to scan the reflective documents and penetrative documents.

Abstract: A glass mount used to mount a glass plate of a scanner is assembled on an inner surface of a top lid of the scanner. The top lid comprises at least a first lateral side, a second lateral side and a third lateral side. The first lateral side and the second lateral side are adjacent to each other and have a plurality of supportive portions to support two lateral sides of the glass plate. The third lateral side has at least one flexible portion to press on the another side of the glass plate.

Abstract: A shaft sleeve structure for use in a module capable of being slid along a guiding shaft and the manufacturing method thereof are provided. The shaft sleeve structure includes: a passage punched through the module for receiving the guiding shaft and providing a first opening segment, a second opening segment and a central segment, wherein the first opening segment has an internal diameter larger than that of the second opening segment, and the central segment has an internal diameter gradually tapered from the first opening segment to the second opening segment; a first bearing having an external diameter mounted in the first opening segment and having an internal diameter for slidably receiving therein the guiding shaft; and a second bearing having an external diameter mounted in the second opening segment and having an internal diameter for slidably receiving therein the guiding shaft.

Abstract: The present invention provides an image scanning apparatus, comprising: a housing including a first light source for a reflective-type scanning operation; and a cover rotatably connected to the housing and selectively covering the housing. The cover includes a second light source for a transparent-type scanning operation and a translucent case covering the second light source. When performing the reflective-type scanning operation, the translucent case provides a background to a reflective-type original. When performing the transparent-type scanning operation, the light from the second light source directly passes through the translucent case.

Abstract: A pivotal connector for scanner comprises a plurality of pivotal cavities concavely arranged on one side of a main body of the scanner, and a plurality of pivotal bodies convexly arranged on one side of a document cover of the scanner and having locations corresponding to those of the pivotal cavities. Each pivotal cavity has two guiding grooves on both sidewalls thereof, and each guiding groove has a recess connected to lateral side of the main body. The pivotal body has two pivotal rods extended from two sidewalls thereof and are placed into the guiding grooves through the recesses. The pivotal rods are movable in the guiding grooves such that the document cover can be tightly attached on a thick document to be scanned.

Abstract: An optical image and transmission composite assembly comprises an optical module, a transmission unit and a guiding unit. The transmission unit and the guiding unit are arranged on the optical module, wherein the optical module is guided and moved by the engagement of a plurality of wheels and tooth bars, or by a female guiding stage and a male guiding stage fit with the female guiding stage. The assembling effort and cost of the scanner using the optical image and transmission composite assembly can be reduced.

Abstract: A scanning apparatus adaptable for two resolutions has two carriages with different resolutions. The carriages are disposed in the cover and the scanning bed of the scanning apparatus respectively. Each carriage includes a lens and a sensing module and the sensing module and the lens are at a fixed distance. The optical lengths between the lenses and the documents to be scanned are different so that the resolution produced by the carriage in the cover is different from the resolution produced by the carriage in the scanning bed.