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Image fetch device

An image reading device and image signal technology, applied in image communication, optics, instruments, etc., can solve problems such as excessively large area and inability to achieve high-fidelity print reproduction of images

Inactive Publication Date: 2006-03-29
ROHM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this moving process, the light-receiving element 8' scans out a rectangle with a length of (P+L), which means that the image reading of each row has been scanned due to the length L of the light-receiving element itself. area
As a result, high-fidelity print reproduction of images on paper cannot be achieved using conventional image reading devices

Method used

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Embodiment Construction

[0033] The preferred embodiment of the present invention will be specifically described below with reference to the accompanying drawings.

[0034] first reference figure 1 , which is an exploded schematic diagram of components used in the image reading device according to the first embodiment of the present invention. The image reading device of this embodiment is a flat-panel line image scanner A, which mainly includes a housing 1, a cold cathode tube 2, an inverter 3, a circuit board 4, a light reflection support 5, and a shielding frame 6 , a lens cluster 7 and a transparent cover 8 .

[0035] In the described embodiment, the housing 1 is in one direction ( figure 2 The main scanning direction N1) in is slender and has a box structure, which is used to accommodate the cold cathode tube 2, the inverter 3, the light reflection support 5, the shielding frame 6 and the lens cluster 7. The housing 1 supports a cover 8 fastened thereon from above. The housing 1 likewise su...

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Abstract

An image reading apparatus is provided which includes a cold-cathode tube as a light source for illuminating a document sheet, an inverter for providing the light source with driving power. A connection cable is used for electrically connecting the light source to the inverter. The image reading apparatus also includes three kinds of rows of light receiving elements arranged in the primary scanning direction for detecting the light reflected on the document sheet. A lens array is provided for focusing the reflected light at the respective rows of light receiving elements. The light receiving elements are mounted on a printed circuit board. The light source, the inverter, the lens array and the printed circuit board are supported by a single case of the image reading apparatus.

Description

[0001] This case is a divisional application with the application number 98117159.1 and the invention titled "Image Reading Device" submitted on August 12, 1998. technical field [0002] The present invention relates to an image reading device, and more particularly, to a line image scanner for optically reading document paper in a full-color manner. The present invention also relates to an image sensing chip most suitable for use in such an image scanner. Background technique [0003] attached Figure 14 A conventional image reading device is shown in . The shown image reading device includes a light source portion Ba composed of a cold cathode tube 1' and a reflection mirror 2'. The conventional device also includes an inverter section Bb for supplying drive energy to the cold cathode tube 1' via a flexible cable 3', and a light guide section Bc provided with reflectors 4a', 4b'. The conventional device also includes an image reading section Bd provided with a lens 5' an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/04G02B27/00H01L27/14H04N1/028
Inventor 藤本久义大西弘朗高仓敏彦今村典广
Owner ROHM CO LTD