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Light source synchronizing system for transparent medium scanner

A synchronous system and scanner technology, applied in the field of scanners, can solve the problems of relative position changes, inability to provide stable and good scanning quality, etc., and achieve the effect of avoiding errors

Inactive Publication Date: 2004-06-23
BENQ CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the error of the motor itself, the error caused by the difference in the roundness of the gears, or even the error generated by the driving module of the motor, it is inevitable that the light source 28 and the sensor in the transparent sheet scanner attachment will 20 The relative position changes when moving at the same time
Therefore, this existing scanner cannot provide stable and good scanning quality when scanning transparent sheets

Method used

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  • Light source synchronizing system for transparent medium scanner
  • Light source synchronizing system for transparent medium scanner
  • Light source synchronizing system for transparent medium scanner

Examples

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Embodiment Construction

[0015] see image 3 As shown in one embodiment of the present invention, a transparency scanner light source synchronization system includes a scanner body 30 and a transparency scanner attachment 40 . Wherein, the light source in the scanner body 30 and the light source in the transparent sheet scanner attachment 40 are attracted to each other by magnetic force and fixedly combined.

[0016] Such as image 3 As shown, the scanner body 30 includes: a first light source 31, which is used to provide the light source required for reflective scanning of the scanned opaque document 32; a driving device 33, which is used to drive the first light source 31 through a transmission device, To scan the scanned manuscript 32; the optical system 34 is used to receive the light emitted by the first light source 31 and reflected by the manuscript 32, and make the manuscript 32 image; a sensing device 35 is used to receive the light formed by the optical system 34 The image of the manuscrip...

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Abstract

A light source synchronizing system for transparent medium scanner features that magnetic force or others are used to provide a fixed link relation between the light source and sensor and only one motor is used to drive both light source and sensor to eliminate error and ensure the synchronous moving of light source and sensor. The poor scan quality caused by the variation of light intensity is also eliminated.

Description

technical field [0001] The present invention relates to a scanner, in particular to a platform type transparent scanner, and more particularly to a light source synchronization system for a transparent scanner. Background technique [0002] Flatbed scanners are generally used for reflective scanning of opaque manuscripts, which use a lamp to illuminate the scanned manuscript, and then use an optical system to project the reflected light into the sensing device. Since the lamp tube is kept at the same distance from the scanned manuscript during scanning, the light intensity irradiated on the manuscript is the same. And because the distance between the document to be scanned and the sensing device is also kept constant during scanning, so along the scanning direction, the image received by the sensing device will not have inconsistencies in brightness and darkness due to changes in the distance. As for the grayscale change of the image in the direction of the lamp caused by t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/04
Inventor 陈志名
Owner BENQ CORP