KR20080063582A - Image scanning apparatus - Google Patents

Image scanning apparatus Download PDF

Info

Publication number
KR20080063582A
KR20080063582A KR1020070000156A KR20070000156A KR20080063582A KR 20080063582 A KR20080063582 A KR 20080063582A KR 1020070000156 A KR1020070000156 A KR 1020070000156A KR 20070000156 A KR20070000156 A KR 20070000156A KR 20080063582 A KR20080063582 A KR 20080063582A
Authority
KR
South Korea
Prior art keywords
cover
actuator
opening
image
reading apparatus
Prior art date
Application number
KR1020070000156A
Other languages
Korean (ko)
Inventor
김동규
김민선
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020070000156A priority Critical patent/KR20080063582A/en
Publication of KR20080063582A publication Critical patent/KR20080063582A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00519—Constructional details not otherwise provided for, e.g. housings, covers
    • H04N1/00551—Top covers or the like
    • H04N1/00554—Latches or hinges therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/0057—Conveying sheets before or after scanning
    • H04N1/00591—Conveying sheets before or after scanning from the scanning position
    • H04N1/00594—Conveying sheets before or after scanning from the scanning position along at least a part of the same path as transport to the scanning position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1017—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components the main-scanning components remaining positionally invariant with respect to one another in the sub-scanning direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0077—Types of the still picture apparatus
    • H04N2201/0094—Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception

Abstract

The present invention provides an image reading apparatus that can reduce manufacturing costs by improving the structure of a home position detecting unit and an opening and closing detecting unit of a cover. The image reading apparatus according to the present invention includes a flat glass provided on the upper surface of the scanning frame, a cover hinged to the scanning frame to open and close the flat glass, an image sensor provided below the scanning frame to read the document, and an image sensor. An image reading apparatus including a home position detecting unit for detecting an initial position of a cover and a cover opening and closing detecting unit for detecting opening and closing of a cover, wherein the home position detecting unit of the image sensor and the opening and closing detecting unit of the cover are each linearly reciprocated. The first actuator and the second actuator to rotate in rotation, each actuator is operated between the sensor unit consisting of a pair of light emitting element and the light receiving element has the effect of reducing the space and manufacturing cost in the device.

Description

Image Reading Device {IMAGE SCANNING APPARATUS}

1 is a side view schematically showing an image reading apparatus according to the present invention.

2 is a plan view schematically showing the image reading apparatus according to the present invention.

3 and 4 are tables and graphs showing an output value and a voltage value indicating whether a sensor unit is operated in the image reading apparatus according to the present invention.

* Description of symbols on the main parts of the drawings *

1. Scanning frame 2. Flat glass

3..Cover 4.Image Sensor

10. Home position sensing unit 12. 1st actuator

20. Opening and closing detection unit 22. Second actuator

30. Sensor

The present invention relates to an image reading apparatus, and more particularly, to an image reading apparatus for scanning an image.

The image forming apparatus refers to a device for printing an input image signal on a printing medium. The image forming apparatus corresponds to a printer, a copying machine, or a multifunction device integrating these functions into one device. The multifunction apparatus includes a scanning unit (image reading apparatus) for reading an image recorded on an original, and a printing unit for printing an image on paper.

Korean Patent No. 555716 discloses an image forming apparatus having a scanning unit and a printing unit. The scanning unit includes a flat glass provided on the upper portion of the main body, an image sensor provided on the lower portion of the flat glass to read an image, and a cover rotated on the upper portion of the main body to press the scan target while protecting the flat glass. The cover is provided with an automatic document feeder (hereinafter referred to as an ADF) so that documents can be scanned continuously. The printing unit is provided at the bottom of the main body.

In addition, such an image forming apparatus includes a cover opening / closing sensor unit for detecting whether the cover is opened or closed, and a home position detecting sensor unit for detecting whether the image sensor is waiting at the start position. This is because the image sensor must always be in a fixed position in order to read (scan) the image.

However, in the conventional image forming apparatus, since the cover opening / closing sensor unit and the image sensor home position detecting sensor unit are separately provided in the main body of the image forming apparatus, not only does it occupy the space in the apparatus, but also increases the manufacturing cost, thereby improving work efficiency. There was a problem of deterioration.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention is to provide an image reading apparatus that can reduce the manufacturing cost by improving the structure.

The image reading apparatus according to the present invention for achieving the above object is a flat glass provided on the upper surface of the scanning frame, the cover is hinged to the scanning frame to open and close the flat glass, provided in the lower portion of the scanning frame for reading the document An image reading apparatus comprising an image sensor, a home position detecting unit for detecting an initial position of an image sensor, and a cover opening and closing detecting unit for detecting opening and closing of a cover, the image reading apparatus comprising: a home position detecting unit and an opening and closing of a cover of an image sensor. Each sensing unit includes a first actuator linearly reciprocating and a second actuator pivoting, and each actuator is operated between a sensor unit including a pair of light emitting elements and a light receiving element.

In addition, the first and second actuators of the image reading apparatus according to the present invention have different transmittances, and have a lower transmittance upon overlapping.

Hereinafter, an image reading apparatus according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. Here, although the image reading apparatus is described as an example in this embodiment, it can be applied to an image forming apparatus such as a copying machine, a multifunction printer, etc., in which the image reading apparatus is installed through appropriate modification and modification.

1 schematically shows an image reading apparatus according to the present invention. Referring to the drawings, the image reading apparatus includes a scanning frame (1) provided on the upper part of the main body so that the scanning components are embedded therein, and a flat plate provided on the upper surface of the scanning frame (1) so that the user can place and scan the originals one by one. It includes a glass 2, a cover 3 hinged to the scanning frame 1 to open and close the flat glass 2, and an image sensor 4 for reading image information recorded in the document. A document auto feeder 5 for automatically feeding a document to enable continuous scanning is provided in the cover 3.

The image sensor 4 is provided under the flatbed glass 2 to read the image information recorded on the original placed on the flatbed glass 2 or the original conveyed by the document automatic document feeder 5 while moving in the scanning direction. do. The image sensor 4 irradiates light on the document, detects light reflected therefrom, and converts the amount of light into an electrical signal to read information from the document. As the image sensor 4, a contact image sensor (CIS), a charge coupled device (CCD), or the like may be used.

2 is a plan view showing an image reading apparatus according to the present invention. As shown in the drawing, an image sensor 4 for scanning an image is provided inside the flat glass 2 provided on the upper surface of the scanning frame 1 to linearly reciprocate in one direction (left and right directions in the drawing). Since the image sensor 4 must wait at the start position before reading the image as described above, the home frame detecting unit 10 of the image sensor 4 is provided in the scanning frame 1 to detect this.

The home position detecting unit 10 includes a first actuator 12 provided at one side of a light source provided with the image sensor 4, and a sensor unit 30 for sensing the operation of the first actuator 12. . The first actuator 12 performs a linear reciprocating motion along the scan direction.

In addition, the scanning frame 1 is provided with a cover opening and closing detection unit 20 for detecting the opening and closing of the cover (3). The cover opening / closing detection unit 20 includes a second actuator 22 provided on one side of the cover 3, and a sensor unit 30 for sensing the presence or absence of the operation of the second actuator 22. The second actuator 22 performs a rotational motion in accordance with the opening and closing of the cover 3.

According to the present invention, the first actuator 12 of the home position detecting unit 10 and the second actuator 22 of the cover opening / closing detecting unit 20 are operated in one sensor unit 30. The sensor unit 30 generally refers to an optical sensor disposed to face the light emitting device and the light receiving device so as to sense the presence and location of an object therebetween. 12 and 22 are installed to allow the light scanned by the light emitting device to be selectively sensed by the light receiving device according to the presence or absence of an actuator, thereby outputting a specific voltage value.

In addition, according to the present invention, the first actuator 12 and the second actuator 22 have different transmittances, and when the two actuators 12 and 22 overlap, the transmittance is further lowered. For example, if the transmittance of the first actuator 12 is T1 and the transmittance of the second actuator 22 is T2 and T1> T2, the transmittance (T1 +) when the two actuators 12 and 22 overlap. T2) must be lower than T2. That is, the transmittance of the actuator becomes T1> T2> T3.

Next, the operation of the image reading apparatus having the above configuration will be described with reference to FIGS. 3 and 4.

Figure 3 is a table showing the output value indicating whether the sensor unit operation of the image reading apparatus according to the present invention, Figure 4 is a graph showing the output voltage value of the sensor unit. In this embodiment, an optical sensor is used in which the output voltage value decreases as the opacity increases.

As shown, if the output value of the sensor unit 30 is A, and the transmittance of the first actuator 12 of the image sensor home position detection unit is higher than the second actuator 22 of the cover opening and closing detection unit, the total level 1 Four kinds of output voltage values can occur.

First, if the output voltage value of the sensor unit 30 is less than or equal to level 1, this means that neither the first actuator 12 of the home position sensing unit nor the second actuator 22 of the opening / closing sensing unit 20 is operated. Indicates. That is, the image sensor 4 stands by at the start position, and the cover 3 shows a closed state.

Subsequently, if the output voltage value of the sensor unit 30 is greater than level 1 and less than level 2, this means that the first actuator 12 of the home position sensing unit is operating and the second actuator 22 of the opening and closing sensing unit 20 is operated. Indicates that it is not operating. That is, the image sensor 4 is out of the starting position, and the cover 3 is in a closed state.

Subsequently, if the output voltage value of the sensor unit 30 is greater than level 2 and less than level 3, this means that the first actuator 12 of the home position sensing unit is not operated and the second actuator 22 of the opening and closing sensing unit 20 is operated. ) Indicates that it is working. That is, the image sensor 4 stands by at the start position, and the cover 3 shows an open state.

Subsequently, if the output voltage value of the sensor unit 30 exceeds level 3, this indicates that both the first actuator 12 of the home position sensing unit and the second actuator 22 of the opening / closing sensing unit 20 are operating. . That is, the image sensor 4 is out of the starting position, and the cover 3 is in an open state.

As described in detail above, the image reading apparatus according to the present invention integrates the sensor units used in the home position detecting unit of the image sensor and the opening and closing detecting unit of the cover, which are usually provided inside the main body, and each actuator operated in the sensor unit. By adjusting the transmittance of the device to detect the presence of the operation, there is an effect of reducing the space and manufacturing cost in the device.

Claims (3)

A flat glass provided on the upper surface of the scanning frame, a cover hinged to the scanning frame to open and close the flat glass, an image sensor provided below the scanning frame to read the document, and a groove for sensing the initial position of the image sensor. In the image reading apparatus comprising a position detecting unit and a cover opening and closing detection unit for detecting the opening and closing of the cover, The home position sensing unit of the image sensor and the opening / closing sensing unit of the cover each include a first actuator linearly reciprocating and a second actuator pivoting, and each actuator includes a pair of light emitting elements and a light receiving element. Image reading apparatus, characterized in that the operation. The method of claim 1, And the first and second actuators have different transmittances. The method of claim 2, The first and second actuators are image reading apparatus, characterized in that the transmittance is lower when overlapping.
KR1020070000156A 2007-01-02 2007-01-02 Image scanning apparatus KR20080063582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070000156A KR20080063582A (en) 2007-01-02 2007-01-02 Image scanning apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070000156A KR20080063582A (en) 2007-01-02 2007-01-02 Image scanning apparatus

Publications (1)

Publication Number Publication Date
KR20080063582A true KR20080063582A (en) 2008-07-07

Family

ID=39815224

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070000156A KR20080063582A (en) 2007-01-02 2007-01-02 Image scanning apparatus

Country Status (1)

Country Link
KR (1) KR20080063582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9640218B2 (en) 2012-12-07 2017-05-02 Intel Corporation Physiological cue processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9640218B2 (en) 2012-12-07 2017-05-02 Intel Corporation Physiological cue processing

Similar Documents

Publication Publication Date Title
US7453055B2 (en) Image reading apparatus
JP4924687B2 (en) Image reading device
CN105791616A (en) Image Reading Apparatus And Image Forming Device
JP2010219667A (en) Image scanning apparatus
JP2010283789A (en) Image reading apparatus
US8947746B2 (en) Image reading device
KR20110075211A (en) Image reading apparatus and control method the same
CN108737678B (en) Image reading apparatus, platen open/close detection method, and image forming apparatus
JP4470807B2 (en) Image reading device
US8194292B2 (en) Imaging apparatus having an LCD document glass
CN1194529C (en) Image fetching system
KR20080063582A (en) Image scanning apparatus
US7259896B2 (en) Office automation apparatus with calibration and positioning device for automatic document feeder
JP5278455B2 (en) Image reading apparatus and program thereof
JP3716810B2 (en) Automatic document feeder
JP4715674B2 (en) Image reading device
JP3932014B2 (en) Image reading device
JP4443166B2 (en) Document reading apparatus and image forming apparatus
JP6443076B2 (en) Image reading apparatus and image forming apparatus
JP2007079076A (en) Image forming apparatus and image reader applicable in the same
JP7062551B2 (en) Image reader
JP3724460B2 (en) Image reading device
US8199337B2 (en) Image reading device
US20080225350A1 (en) Contact-image-sensor scanner configurable for scanning opaque and transparent media
JP2007004055A (en) Image forming apparatus

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination