CN1078418C

CN1078418C - Image scanner with self-propelled function

Info

Publication number: CN1078418C
Application number: CN 97125474
Authority: CN
Inventors: 李凤生
Original assignee: Mustek Systems Inc
Current assignee: Hongyou Science & Technology Co Ltd
Priority date: 1997-12-11
Filing date: 1997-12-11
Publication date: 2002-01-23
Anticipated expiration: 2017-12-11
Also published as: CN1219818A

Abstract

An image scanner with self-walking function is composed of upper and lower bases, which are combined together for feeding paper and scanning, and a special paper-binding mechanism for feeding paper smoothly.

Description

Image scanner with automatic walking function

The present invention relates to a kind of image scanner, particularly relate to a kind of CIS Contact Image Sensor that comprises, and have the image scanner of automatic walking function with automatic walking function.

Therefore CIS Contact Image Sensor (Contact Image Sensor-CIS) is because the depth of field is very short, and the image scanner that is made of CIS is difficult to make platform-type, generally is paper feed type.The image scanner that comprises CIS in the prior art does not have automatic walking function, therefore only can scan the single page file (paper or photo etc.) of fixed dimension, for bound file or the king-sized file of size, can't scan.

On the other hand, though disclosed the sheet-fed color image scanners that has automatic walking function and comprise the CCD structure in the prior art, compare with the CIS structure, its mechanism's complexity comparatively bothers in the manufacturing, and miniaturization is difficulty comparatively.

The object of the present invention is to provide a kind of image scanner that comprises CIS Contact Image Sensor and have automatic walking function, its mechanism is simple, can the file of various different kenels be scanned.

The object of the present invention is achieved like this, a kind of image scanner with automatic walking function promptly is provided, the upper frame and the lower support that comprise separable combination, this upper frame is used in combination with lower support during its paper feed scanning, this upper frame separates with lower support during self-propelled scanning, only use this upper frame part, this upper frame comprises: the upper frame body; Motor; Upper roller, its part protrude in outside this upper frame body, are subjected to this motor driven, cooperate the file feed-in with this lower support when carrying out paper feed type scanning, when carrying out self-propelled scanning, and this upper roller of mat and this upper frame is moved on file; CIS Contact Image Sensor, the rear that is positioned at this upper roller also disposes for scalable mode, when carrying out self-propelled scanning, should go up lower support separates, the downside surface of this CIS Contact Image Sensor is a little less than the lower edge of this upper roller, or in the same plane with the lower edge of this upper roller, when this upper frame places on the file, this CIS Contact Image Sensor is affixed on the file fully, satisfies the very short requirement of the CIS Contact Image Sensor depth of field; When carrying out paper feed type scanning, lower support combination on this, this CIS Contact Image Sensor is subjected to the downside surface that contacting of this lower support make its downside surface and this upper frame body and is positioned on the same parallel surface, and this lower support comprises: the lower support body; Bottom roller, its part protrudes in outside this lower support body and is scalable configuration, cooperate the file feed-in with this upper roller again, paper feed direction enters the plane that downside surface was positioned at jointly of this CIS Contact Image Sensor and this upper frame body with a low-angle, and during the file feed-in, the position of initial and this plane contact is at the rear of the downside surface leading edge of this CIS Contact Image Sensor.

The advantage of apparatus of the present invention is that it can scan binding into book form of various different sizes or single page file, and it is simple in structure, and volume is little, the quality of scanning height.

Below in conjunction with accompanying drawing, embodiments of the invention are described, wherein:

Fig. 1 has the automatic walking function image scanner for the present invention;

The upper frame that Fig. 2 A separates for lower support on the image scanner of the present invention;

Fig. 2 B walks the schematic diagram of scanning certainly for image scanner upper frame of the present invention;

Fig. 3 is another embodiment of image scanner of the present invention;

Fig. 4 walks the situation of scanning certainly for embodiment among Fig. 3;

Fig. 5 is the another embodiment of image scanner of the present invention;

Fig. 6 is the part enlarged drawing of image scanner of the present invention.

Fig. 1 represents that the present invention has the image scanner schematic construction of automatic walking function, it comprises upper frame 1 and lower support 2, the two is detachable combination, during paper feed scanning, aforementioned upper frame 1 is used in combination with lower support 2, when walking to scan, aforementioned upper frame 1 separates with lower support 2 and only uses upper frame 1 part.Upper frame 1 mainly comprises: parts such as upper frame body 11, motor 12, upper roller 13, CIS 14; Lower support 2 mainly comprises: lower support body 21, bottom roller 22 etc.

Aforementioned upper roller 13 parts protrude in outside the upper frame body 11 and driven by motor 12, when carrying out paper feed scanning, upper roller 13 cooperates the file feed-in with bottom roller 22, carries out when walking to scan, and mat upper roller 13 makes upper frame 1 move (referring to Fig. 2 B) on file 3.

Aforementioned CIS 14 is positioned at the rear of upper roller 13 and disposes for scalable mode, carry out when walking to scan, last lower support separates, the downside surface of CIS 14 a little less than the lower edge of upper roller 13 (referring to Fig. 2 A, or it is in the same plane with the lower edge of upper roller, therefore when upper frame places on the file (referring to Fig. 2 B), mat gravity CIS 14 can be affixed on the file fully, and the image that therefore scans gained has very high quality.On the other hand, when carrying out paper feed scanning, last lower support combination, CIS 14 is subjected to contacting of lower support 2 and the downside surface 111 of its downside surface and this upper frame body is positioned on the same parallel surface.

Aforementioned bottom roller 22 parts protrude in outside the lower support body 21 and are scalable configuration, cooperate the file feed-in with upper roller 13, paper feed direction from bottom to top enters the plane that downside surface was positioned at jointly of CIS 14 and upper frame body with a small angle theta, and during the file feed-in, the position P of initial and plane contact is at the rear of the downside surface leading edge r of CIS 14.By this structure, the file of feed-in can have some setbacks paper feed because of the corner angle of CIS 14 lower-left edge.

Again with reference to figure 1, the end view of lower support body 21 is the shape that rectangle is clipped one jiao of front side, when upper frame 1 combines with lower support 2, the rear section of CIS 14 (right side among Fig. 1) is positioned at not clipped on one jiao the part of lower support body 21 uper side surfaces, the quilt that front part (left side among Fig. 1) is positioned at lower support body 21 uper side surfaces is clipped on one jiao the part, and the scanning position point q of CIS 14 is positioned at not clipped on one jiao the part of lower support body uper side surface.

Structure with reference to another preferred embodiment of the present invention shown in Figure 3, wherein upper frame 1 has the last auxiliary wheel 15 of scalable configuration, be positioned at the rear of CIS 14, when walking to scan, when upper frame 1 places on the file, mat gravity makes upper roller 13, CIS 14, upward auxiliary wheel 15 threes' lower edge is in the same plane, as shown in Figure 4.Last auxiliary wheel 15 auxiliary upper rollers 13 have straight travel path when making self-propelled scanning.

With reference to the structure of another preferred embodiment of the present invention shown in Figure 5, wherein lower support 2 also has following auxiliary wheel 23, when last lower support in conjunction with the time, in order to cooperate should on bottom roller and make the paper feed type scanning paper feed smooth.

In addition, the present invention has the image scanner of automatic walking function, and the preferred embodiment of its paper feed direction angle θ is less than 10 °.

With reference to figure 6, has the image scanner of automatic walking function according to the present invention again, wherein the vertical distance d 〉=1mm between the uper side surface of the leading edge r of CIS 14 downside surfaces 141 and lower support body.

The specific embodiment that is proposed in the specification of the present invention is only in order to be easy to illustrate technology contents of the present invention, and and unrestricted the present invention, and the various variations that design is made according to the present invention all are included in the claim of the present invention.

Claims

1. image scanner with automatic walking function, the upper frame and the lower support that comprise separable combination, described upper frame is used in combination with lower support during the scanning of its paper feed, and described upper frame separates with lower support during self-propelled scanning, only use described upper frame part, described upper frame comprises:

The upper frame body;

Motor;

Upper roller, its part protrude in outside the described upper frame body, are subjected to described motor driven, cooperate the file feed-in with described lower support when carrying out paper feed type scanning, and when carrying out self-propelled scanning, the described upper roller of mat moves described upper frame on file;

CIS Contact Image Sensor, the rear that is positioned at described upper roller also disposes for scalable mode, when carrying out self-propelled scanning, the described lower support of going up separates, the downside surface of described CIS Contact Image Sensor is a little less than the lower edge of described upper roller, or in the same plane with the lower edge of described upper roller, when described upper frame places on the file, described CIS Contact Image Sensor is affixed on the file fully, satisfies the very short requirement of the CIS Contact Image Sensor depth of field; When carrying out paper feed type scanning, describedly go up the lower support combination, described CIS Contact Image Sensor is subjected to the downside surface that contacting of described lower support make its downside surface and described upper frame body and is positioned on the same parallel surface,

Described lower support comprises:

The lower support body;

Bottom roller, its part protrudes in outside the described lower support body and is scalable configuration, cooperate the file feed-in with described upper roller again, paper feed direction enters the plane that downside surface was positioned at jointly of described CIS Contact Image Sensor and described upper frame body with a low-angle, and during the file feed-in, the position of initial and described plane contact is at the rear of the downside surface leading edge of described CIS Contact Image Sensor.

2. the image scanner with automatic walking function as claimed in claim 1, wherein, described lower support body end view is the shape that rectangle is clipped one jiao of front side, when upper frame combines with lower support, described CIS Contact Image Sensor rear section is positioned at not clipped on one jiao the part of described lower support body uper side surface, front part is positioned at described lower support body uper side surface to be clipped on one jiao the part, and the scanning position of described CIS Contact Image Sensor point is positioned at described lower support body uper side surface and is not clipped on one jiao the part.

3. the image scanner with automatic walking function as claimed in claim 1 or 2, wherein, described upper frame also has the last auxiliary wheel of scalable configuration, be located at the rear of described CIS Contact Image Sensor, during self-propelled scanning, when described upper frame placed on the file, described upper roller, described CIS Contact Image Sensor and described upward auxiliary wheel three's lower edge was in the same plane, and the described auxiliary wheel of going up makes it have straight travel path when walking to scan in order to auxiliary upper roller.

4. the image scanner with automatic walking function as claimed in claim 1 or 2, wherein, described lower support also has following auxiliary wheel, when last lower support in conjunction with the time, the scanning position point of described auxiliary wheel down and described CIS Contact Image Sensor is tangent, makes the paper feed type scanning paper feed smooth in order to cooperate the described bottom roller of going up.

5. the image scanner with automatic walking function as claimed in claim 1 or 2, wherein, described paper feed direction and described interplanar angle are less than 10 °.

6. the image scanner with automatic walking function as claimed in claim 2, wherein, the vertical distance d 〉=1mm between the leading edge of described CIS Contact Image Sensor downside surface and described lower support body uper side surface.