CN2394264Y

CN2394264Y - Double-sided image scanning module

Info

Publication number: CN2394264Y
Application number: CN 99244101
Authority: CN
Inventors: 高鹏智
Original assignee: Mustek Systems Inc
Current assignee: Hongyou Science & Technology Co Ltd
Priority date: 1999-09-01
Filing date: 1999-09-01
Publication date: 2000-08-30
Anticipated expiration: 2009-09-01

Abstract

The utility model discloses a double-sided image scanning module, including transparent window, image reading device, a U type slewer has two paper output ends and the paper feed end that is located same direction, and first transparent window is connected with this U type slewer's paper feed end, and first image reading device is fixed in the below of this first transparent window, and the second transparent window is connected with U type slewer's paper output end, and second image reading device fixes the below at this second transparent window. It has simple structure, small volume and convenient use.

Description

Two plane type image scan module

But the utility model relates to the module of the two-sided image of scanning document.

Scanner commonly used is mostly to scan the image of the page.If want the then manually page turning of image of scanning double-side, or utilize two image fetch devices to read the two-sided image of file simultaneously.For example, U.S. Patent number the 4th, 743, No. 974, the patent of Dan F.Lockwood " scanners of two scanning arrays " DualScanning Array Raster Input Scanner) in, the convenient two-sided image that reads file with two image fetch devices up and down simultaneously.

As shown in Figure 1, reading of the image of file is by aspectant CCD

image fetch device

11,12 about in the of two.What Fig. 1 showed is a kind of structure of scanner, and when the document image of scanning single face, file is placed on the document platform 15.The CCD image fetch device 12 of below can move along transmission shaft 14, to read the image of file.During the image of scanning double-side, file is by the guiding of roller set 16, by two

transparent glass plate

13a, 13b up and down, so that two CCD

image fetch devices

11,12 up and down, and the image on scanning document two sides simultaneously almost.

Basically, the patent of Lockwood is difficult to avoid the shadow effect that the strong illumination because of two relative CCD

image fetch devices

11,12 forms.Even Lockwood once mentioned relative two CCD

image fetch devices

11,12 and should stagger in instructions, see through the formed shadow effect of paper to avoid strong illumination when arranging.Yet, according to the structure that shows among Fig. 1, still can't overcome this difficulty on the implementation, one of reason is that CCD

image fetch device

11,12 almost is the image that reads file simultaneously.For keeping the complete of image, two CCD

image fetch devices

11,12 can not divide too far away.So the distance of CCD

image fetch device

11,12 still must be quite approaching.In the case, the high light of relative up and down CCD

image fetch device

11,12 still can influence each other, and produces shadow effect.And scanning module shown among Fig. 1 is too complicated because of its drive mechanism, can not modularity.Such framework also is not suitable for small-sized static image reading device, for example scanner or facsimile recorder.

Fundamental purpose of the present utility model is to propose a kind of simple in structure, and volume is little, and two plane type image scan module easy to use once reads the two-sided image of file, and then improves the efficient of scanning.

The purpose of this utility model is achieved in that a kind of two plane type image scan module, comprises transparency window, image fetch device, and a U type slewing equipment has two and is positioned at unidirectional paper delivery end and paper feed end; First transparency window is connected with the paper feed end of this U type slewing equipment; First image fetch device is fixed on the below of this first transparency window; Second transparency window is connected with the paper delivery end of U type slewing equipment; Second image fetch device is fixed on the below of this second transparency window.

U type slewing equipment is provided with a plurality of in order to file is imported the roller of above-mentioned paper delivery end by above-mentioned paper feed end.

First roller is positioned at the top of the first above-mentioned transparency window; Second roller is positioned at the top of the second above-mentioned transparency window.

First image fetch device is the contact-type image reading device.

Second image fetch device is the contact-type image reading device.

The first wherein above-mentioned image fetch device is the electric charge coupled-inductors.

The second wherein above-mentioned image fetch device is the electric charge coupled-inductors.

First image fetch device is connected with first memory storage; Second image fetch device is connected with second memory storage; One image process unit is connected with first memory storage, second memory storage respectively, reads the image data in this first memory storage and this second memory storage in regular turn, and is converted to digital signal; Image process unit is connected with a modulation demodulation module, transmits this digital signal to one telephone line.

The utility model is owing to utilize independently image fetch device of a U type slewing equipment and two, the two-sided image of single pass file.Because module volume of the present utility model is little, can be installed in easily in scanner or the facsimile recorder, with the two-sided image of while scanning document.And modular structure of the present utility model is simple, can save the cost of element.In addition, owing to CIS scanister of the present utility model is independence and separates, therefore, can not produce shadow effect because of the high light of scanning module.The utility model is applicable to multiple static image reading device, the two-sided image of scanning document fast, and can be widely used in facsimile recorder and the scanner.

Below in conjunction with concrete structure and the principle of work of accompanying drawing detailed description according to the two plane type image scan module that the utility model proposes.

Fig. 1 cuts open structural representation for the side of prior art;

Fig. 2 cuts open structural representation for the side of a most preferred embodiment of the present utility model;

Fig. 3 cuts open structural representation for the side of another most preferred embodiment of the present utility model;

Fig. 4 is applied to the functional block diagram of facsimile recorder for the utility model.

The two ends of slewing equipment of the present utility model are respectively paper delivery end and paper feed end, and are positioned at the same side, so that user's operation.Paper feed end and paper delivery end have a transparency window respectively, and respectively there is an image fetch device below of transparency window.When file passed through first transparency window, first image fetch device carried out reading of the first face picture.And after file reverses by slewing equipment, and when entering second transparency window, second image fetch device just can read second image of file.

Module of the present utility model mainly utilizes independently image fetch device of a U type slewing equipment and two, as electric charge coupled-inductors (Charge Coupled Device, C D), or contact-type image reading device (Contact Image Sensor, hereinafter to be referred as the CIS scanister), with the file of scanning double-side image.Most preferred embodiment of the present utility model mainly comprises as shown in Figure 2: a U type slewing equipment 22, the first transparency windows 21, CIS scanister 23, the second transparency windows 24 and CIS scanister 25.

As shown in Figure 2, during scanning, file is from a direction paper feed, and gradually file is inducted into slewing equipment 22 by a roller 26.File can pass through first transparency window 21 during paper feed.CIS scanister 23 is fixed on the below of transparency window 21, reads the first face picture of file during by transparency window 21 at file.At least one roller 27 can be installed in slewing equipment 22 inside, and file is guided to paper delivery direction b.

CIS scanister 25 is fixed in the below of second transparency window 24.When file is withdrawed from by U type slewing equipment 22, and during by second transparency window 24, the CIS scanister 25 that is positioned at second transparency window, 24 belows just can carry out reading of the file second face picture.The top of second transparency window 24 is provided with a roller 28, file progressively can be guided to the direction b of paper delivery.

The paper delivery of Fig. 2 and paper feed direction be all in the same side, helps dwindling and user's operation of body.On the other hand,

CIS scanister

23,25 also can replace by CCD, as shown in Figure 3.

In Fig. 3, the slewing equipment 32 of U type is identical with Fig. 2, and that just image fetch device uses is CCD, therefore, puts CCD35,39 as long as change in the position of placing the CIS scanner originally, and adjusts the direction that light path advances and get final product.Because CCD need light source and reflector group, therefore below

transparency window

321 and 322, install

light source

31,36 respectively, as fluorescent tube, and utilize

reflector group

33,37 respectively the reflected image of file is guided to

lens

34,38, and focus on CCD35,39 then, just can finish reading of image.

In addition, because the volume of module of the present utility model is little, can be installed in scanner or the facsimile recorder document image that single pass is two-sided easily.As shown in Figure 4, be and utilize the functional block diagram of structure of the present utility model in conjunction with a facsimile recorder.As shown in Figure 4,

image fetch device

41,43 connects a

memory storage

42,44 respectively, with the image data after the temporary scanning.Image process unit 45 foundations one predefined order reads the image data in the

memory storage

42,44, and converts digital signal to, to be sent to a modulation demodulation module (MODEM, modified demodulation module) 46.Modulation demodulation module 46 connects general telephone wire, in regular turn image data is sent to far-end.

In sum, module of the present utility model simple in structure, applicability is big, can save manufacturing cost, but and the two-sided document image of single pass, to improve the efficient of scanning.And, because image fetch device of the present utility model is independent and separately.Therefore, can not disturb, and produce shadow effect because of high light.

Claims

1. a two plane type image scan module comprises transparency window, image fetch device, it is characterized in that: a U type slewing equipment has two and is positioned at unidirectional paper delivery end and paper feed end; First transparency window is connected with the paper feed end of this U type slewing equipment; First image fetch device is fixed on the below of this first transparency window; Second transparency window is connected with the paper delivery end of U type slewing equipment; Second image fetch device is fixed on the below of this second transparency window.

2. two plane type image scan module as claimed in claim 1 is characterized in that: U type slewing equipment is provided with a plurality of in order to file is imported the roller of above-mentioned paper delivery end by above-mentioned paper feed end.

3. two plane type image scan module as claimed in claim 2 is characterized in that: first roller is positioned at the top of the first above-mentioned transparency window; Second roller is positioned at the top of the second above-mentioned transparency window.

4. two plane type image scan module as claimed in claim 1 is characterized in that: first image fetch device is the contact-type image reading device.

5. two plane type image scan module as claimed in claim 1 is characterized in that: second image fetch device is the contact-type image reading device.

6. two plane type image scan module as claimed in claim 1 is characterized in that: the first wherein above-mentioned image fetch device is the electric charge coupled-inductors.

7. two plane type image scan module as claimed in claim 1 is characterized in that: the second wherein above-mentioned image fetch device is the electric charge coupled-inductors.

8. two plane type image scan module as claimed in claim 1 is characterized in that: first image fetch device is connected with first memory storage; Second image fetch device is connected with second memory storage; One image process unit is connected with first memory storage, second memory storage respectively, reads the image data in this first memory storage and this second memory storage in regular turn, and is converted to digital signal; Image process unit is connected with a modulation demodulation module, transmits this digital signal to one telephone line.