JP2000115486A - Original reader and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an original reader that can transmit satisfactory image data when the original reader acts as facsimile equipment for reading an original, while adopting an always stable white color for a read reference color and that can form image data properly matching with the width of an original, when the original reader acts a scanner to read the original. SOLUTION: In this original reader, a read reference roller 16 in a background color or an original 6 or in a white reference color at reading is formed on a contact sensor 15 with a width to cover an entire read width of the contact sensor 15. A black Mylar(R) 16a and a white Mylar 16c are adhered on a surface of an elastic member 16a covering a shaft 16d by a double-sided tape to form the read reference roller 16. When the original reader which acts as a scanner reads an original, the black Mylar 16b is placed on an upper side of the contact sensor 15. When the original reader acting as a facsimile equipment reads an original, the white Mylar 16c is placed on the upper side of the contact sensor 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a document reading apparatus and method.

[0002]

2. Description of the Related Art Today, with the development of information processing systems,
Various information processing devices have been developed. Among these devices, information processing devices such as a document reading device and a facsimile device having an image reading function are widely used not only in offices but also in ordinary households.

A reading section used in these information processing apparatuses includes a reduction optical system for reducing an original image and leading the image to a photoelectric conversion element such as a CCD, and a CCD which brings the original image closer to the original and converts the original image into a CCD image.
And a 1: 1 optical system that guides the image at the same magnification.

FIG. 10 is a cross-sectional view showing the structure of a conventional document reading apparatus using an equal-magnification optical system. An original reading apparatus includes an electric board on which a control board 201 and a main power supply 202 are mounted,
It comprises a reading unit 203, an operation unit 204 and the like.

The reading unit 203 includes a document tray 205 for setting and stacking the documents 211, an upper document guide 206 for guiding the document conveying path, a lower document guide 207, a document separating unit 208 for sequentially feeding a plurality of documents, Contact sensor 209 using photoelectric conversion element, contact sensor 20
And a reading reference plate 210 which is attached to the upper surface facing the document 9 and serves as a background color (background color) of the document.

First, as a conveyance path of the original 211, the originals sandwiched between the original separating roller 212 and the preliminary conveying plate spring 213 are conveyed one by one by the friction pieces 214.
Then, the original 211 is fed by the feeding roller 215 and the facing roller 21.
6, the paper passes between the contact sensor 209 and the reading reference plate 210, and is discharged by the paper discharge roller 217 and the opposing roller 218 in the direction of the arrow a in FIG.

The surface of the reading reference plate 210 which is in contact with the reading surface is colored white in accordance with the background color (background color) of the document or black in place of the background color of the document. There is. Here, it is colored white.

The contact sensor 209 is held by the body frame, and the reading reference plate 210 is moved by its own weight or a spring (not shown).
Is biased to the side.

[0009]

However, the conventional document reading apparatus has the following problems. That is, when the reading reference plate is white, when a document is transmitted by the facsimile apparatus, there is a reading reference plate of the same color as the background color outside the document width, so that no extra image data is transmitted. Although it is possible to transmit only good image data, when reading an original as a scanner that takes in image data into a personal computer (PC), a portion outside the original width is present because a reading reference plate having the same color as the background color of the original exists. Is also read as image data.

In other words, when reading an original of a small paper size such as a postcard or a business card, image data of the same type as the standard size (A4, B4) which is full of the original reading width is obtained.
The data volume was increasing.

On the other hand, when the reading reference plate is set to black, when a document is read by a scanner which takes in image data to a PC, there is a black reading reference plate different from the background color of the document. It is possible to discard black image data other than the document width and read it as image data. That is, when reading an original of a small paper size such as a postcard or a business card, image data of the same size can be obtained.

However, when an original is transmitted by a facsimile apparatus, a black reading reference plate different from the background color exists outside the width of the original, so that image data having black outside the width of the original must be transmitted. As a result, a document different from the original document is transmitted. Also, since the ratio of the presence of black in the original document increases, if the receiving side is a recording-based facsimile apparatus that performs ink-jet printing or toner printing, ink and toner are consumed more than usual because extra black image data is recorded. It had been.

Therefore, the present invention provides an image data suitable for the width of a document when a document is read as a facsimile apparatus, and when a document is read as a facsimile apparatus, good image data can be transmitted. It is an object of the present invention to provide a document reading apparatus and a document reading method that can perform the above-mentioned operations.

[0014]

In order to achieve the above object, a document reading apparatus according to a first aspect of the present invention has image reading means for reading an image described on a document, and the image reading means reads the image. In a document reading apparatus in which reading reference means is arranged on a surface facing a reading position of a document to be read, the reading reference means has at least one color other than the reading reference color in addition to the reading reference color. .

According to a second aspect of the present invention, in the original reading apparatus according to the first aspect, the reading reference means includes:
Switching means for switching between the reading reference color and a color other than the reading reference color is provided.

According to a third aspect of the present invention, in the document reading apparatus according to the second aspect, the switching unit is configured to switch the read reference color and a color other than the read reference color according to a use of the image to be read. Is switched.

According to a fourth aspect of the present invention, in the document reading apparatus according to any one of the first to third aspects, the reference reading color is white.

According to a fifth aspect of the present invention, in the original reading apparatus according to any one of the first to third aspects, a color other than the reading reference color is black.

According to a sixth aspect of the present invention, in the original reading apparatus according to any one of the first to fifth aspects, the image reading means includes a transporting means for transporting the original.

According to a seventh aspect of the present invention, in the original reading apparatus according to any one of the first to sixth aspects, the image reading means includes a light source for illuminating the original and a reflected light image obtained from the original. And a reading element for reading.

According to an eighth aspect of the present invention, in the original reading apparatus according to any one of the first to seventh aspects, the reading reference means has a width equal to or larger than the reading width of the image reading means. And

In the document reading apparatus according to the ninth aspect, in the document reading apparatus according to any one of the first to eighth aspects, the reading reference color and a color other than the reading reference color are a reading width of the image reading means. Are characterized by having uniform colors.

According to a tenth aspect of the present invention, there is provided the document reading apparatus according to any one of the first to ninth aspects, wherein the document reading apparatus has a color reading function.

An original reading apparatus according to an eleventh aspect has a scanner function and a facsimile function that can read an image read by the original reading apparatus according to any one of the first to tenth aspects into a personal computer. It is characterized by the following.

According to a twelfth aspect of the present invention, in the original reading method for reading an image written on an original at a reading position, a color of a surface facing the reading position is changed according to a use of the image to be read. Switching to a reading reference color or a color other than the reading reference color.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a document reading apparatus and method according to the present invention will be described.

[First Embodiment] FIG. 1 is a sectional view showing the configuration of a document reading apparatus according to the first embodiment. In the document reading apparatus, a main body chassis 1, a control board 2 for controlling, a power supply unit 3 for supplying power, an operation panel 4, a control board 5 for the operation panel 4, a document table 7 for loading a document 6, and the like are arranged. I have.

When the document 6 is stacked on the document table 7 and the document auxiliary table 8, the width direction of the document is guided by a width regulating plate 9 for regulating the width direction of the document. Manuscript 6 with multiple sheets
A separation roller 10 rotated in the direction of arrow b by a drive motor (not shown) and a preliminary conveyance plate 11 urged toward the separation roller 10 form a wedge-shaped wedge formed from the friction piece 12 and the separation roller 10. It is transported to the position c.

Then, the plurality of originals 6 are separated one by one by the friction piece 12, and a feed roller 13a rotated by a drive motor (not shown) and an opposing auxiliary urged toward the feed roller 13a are provided. It is transported by the rollers 13b. The document transport guide 14 is moved from the separation roller 10 to the contact sensor 1.
Guide the manuscript 6 to 5.

Above the contact sensor 15 mounted on the contact sensor mounting plate 15a, there is provided a reading reference roller 16 having a width covering the entire reading width of the contact sensor 15. Reading reference roller 16
Is a background color of the document 6 or a white reference color at the time of reading.

Further, inside the contact sensor 15,
Light source for illuminating document 6 (LEDs are used in this embodiment)
Is provided. The document 6 whose image has been read by the contact sensor 15 is pushed out by a discharge roller 17a rotated by a drive motor (not shown) and an opposing auxiliary roller 17b urged toward the discharge roller 17a, and the arrow a Discharge to the outside along the direction.

Next, the configuration of the reading reference roller 16 will be described. FIG. 2 is a diagram illustrating the configuration of the reading reference roller. FIG. 2A is a perspective view showing the appearance of a reading reference roller 16 provided above the contact sensor 15. FIG. 2B is a diagram showing a cross section of the reading reference roller 16.

The reading reference roller 16 is formed in a roller shape by adhering a black mylar 16b and a white mylar 16c to the surface of an elastic member 16a (a sponge is used in this embodiment) covering the shaft 16d with a double-sided tape. .

The original 6 is brought into close contact with the reading surface of the contact sensor 15 so that the reading reference roller 16 is pressed against the contact sensor 15 to ensure flatness. Since the original 6 is conveyed when the reading reference roller 16 is stopped, the black mylar 16 b and the white mylar 1
For 6c, a PET (polyethylene terephthalate) film is used. As a result, the transport load of the document 6 due to friction with the document is reduced, and dirt is hardly attached.

Since the original 6 is conveyed in the direction of arrow a in FIG. 1, in order to make it easier for the original to enter the reading contact surface d on the upstream side of the original conveyance, in the present embodiment, θ = about 20 ° to 60 °. The outer diameter of the reading reference roller 16 is set to φ16 mm so as to provide a guide surface (see FIG. 3A).

Further, if the black mylar 16b and the white mylar 16c have rigidity (when the thickness is large), they are separated from the sponge 16a, so a thin film having a thickness of about 100 μm (100 μm in this embodiment) is used. ing.

Further, a slit plate 16e is provided at one end of the roller shaft 16d, and the roller shaft 16d is rotated by a driving motor (not shown), so that the photo sensor 1
6f, the black mylar 16b and the white mylar 16c are determined.

Next, the relationship between the indexing of the reading reference roller 16 and the reading procedure will be described. FIG. 3 is a diagram showing the indexing position of the reading reference roller 16 during reading. FIG. 7A shows a state in which a white reference color is taken in before the reading operation is started. At this time, the reading reference roller 16 is in a state where the white mylar 16c is located on the upper surface of the contact sensor 15.

As shown in FIG. 3B, the sheet feeding roller pair 1
The document 6 is conveyed in the direction of the arrow a by rotating the pair of discharge rollers 3a and 13b and the sheet discharge rollers 17a and 17b in the direction of the arrow. At this time, the reading reference roller 16 is in a state where the black mylar 16b is positioned on the upper surface of the contact sensor 15 while the document 6 is being conveyed.

FIG. 4 is a graph showing an output waveform of the contact sensor 15. The vertical axis shows the output of the contact sensor 15, and the horizontal axis shows the reading width. FIG. 7A shows an output waveform of the contact sensor 15 when the white reference color is read. FIG. 3B shows the output waveform of the contact sensor 15 when the document passes through, and shows the output waveform of the contact sensor 15 when reading the document 6 in the state of FIG. 3B. More specifically, it is an output waveform in a state where the leading end of the document 6 is being read (beginning of reading).

In FIG. 4B, b is the reading width of the document 6, and c is outside the width. In this case, the background color of the original 6 is the same white color as usual, and since there is a difference between the background color of the original 6 and the color arrangement of the reading reference roller 16, such an output waveform is obtained.

Thus, when reading a document as a scanner that takes image data into the PC, a boundary can be detected with respect to the document width, and image data outside the document width can be discarded and read as image data. That is, when reading an original of a small paper size such as a postcard or a business card, image data of the same size can be obtained.

In FIG. 3C, as in FIG. 3B, a pair of feed rollers 13a and 13b and a pair of discharge rollers 17a and 17b
The document 6 is conveyed in the direction of arrow a by rotating.
At this time, the reading reference roller 16 is in a state where the white mylar 16c is positioned on the upper surface of the contact sensor 15 while the document 6 is being conveyed.

FIG. 5 is a graph showing an output waveform of the contact sensor 15. The vertical axis shows the output of the contact sensor 15, and the horizontal axis shows the reading width direction. FIG. 7A shows an output waveform when a white reference color is read, and FIG. 7B shows an output waveform when a document passes.

FIG. 3B shows the original 6 in the state shown in FIG.
5 shows an output waveform of the contact sensor 15 when reading the data. At this time, in FIG. 5B, b is the reading width of the document 6, and c is outside the width. In this case, the background color of the original 6 is the same white color as usual, and since there is a difference between the background color of the original 6 and the color arrangement of the reference roller 16, such an output waveform is obtained.

Thus, when a document is transmitted as a facsimile machine, white is determined outside the document width, so that good image data can be transmitted without transmitting extra image data.

As described above, by switching the reading reference roller 16 according to the purpose of the image, a stable white reference color can be read at all times, and the amount of image data can be reduced in the scanner mode. Can be shortened. In the facsimile transmission mode, a stable image can be transmitted as in the normal case. Therefore, it is possible to improve the quality of a document reading apparatus equipped with two functions.

[Second Embodiment] The document reading apparatus according to the second embodiment is applied to a multifunction apparatus having a facsimile function and a scanner function that can be loaded into an external PC, and having a recording system. FIG. 6 is a cross-sectional view illustrating a configuration of a multifunction peripheral according to the second embodiment. FIG. 7 is a perspective view showing the appearance of the multifunction peripheral shown in FIG. In such a composite apparatus, an ink jet recording apparatus is generally used as a recording system.

This multifunction apparatus comprises a paper feeding system A for supplying a recording sheet, a recording system B, a reading system C for reading an image written on a document, and an operation unit D. Substrate 102a, power supply unit 1
02b and the like.

The reading system C irradiates the original 103 with light, converts the reflected light into an electric signal, and transmits the electric signal to another apparatus according to the operation mode, or transmits the electric signal to its own recording system B. Is done. The document 103 is stacked on a document table 104 and a document auxiliary tray 105, and a document width regulating plate 106 is provided.
The skew in the width direction at the time of conveyance is prevented by a and 106b.

A plurality of originals 103 are conveyed by a separation roller 107 rotated by a drive motor (not shown) and a preliminary conveyance plate 108 urged toward the separation roller 107, and the friction piece 109 and the separation roller 107 and is transported to a wedge-shaped position formed by Then, the plurality of originals 103 are separated one by one by the friction pieces 109 and fed by a feed roller 110 a rotated by a drive motor (not shown).
Is transported between the auxiliary roller 110b and the auxiliary roller 110b urged toward the feed roller 110a. Document transport guide 111
Guides the document 103 from the separation roller 107 to the contact sensor 112.

A reading reference roller 113 is provided above the contact sensor 112 mounted on the contact sensor mounting plate 112a. Reading reference roller 113
Is a background color of a document or a white reference color at the time of reading, and is formed to have a width that covers the entire reading width of the contact sensor 112.

Further, inside the contact sensor 112, a light source (not shown) (not shown) for irradiating the document 103 is arranged. The document 103 read by the contact sensor 112 includes a discharge roller 114a rotated by a drive motor (not shown),
Opposite auxiliary roller 1 urged toward paper discharge roller 114a
When the paper is discharged in the direction of arrow d with respect to the original discharge tray 14b, the paper is stacked on the document discharge tray 115.

The document discharge tray 115 is indicated by an arrow e shown in FIG.
It is configured to be freely movable in the direction, and is stored inside the apparatus except for the reading operation. Here, the reading reference roller 1
Reference numeral 13 has the same configuration as the reading reference roller 16 of the first embodiment.

The operation unit D is for performing a copy operation, a transmission operation, a scanner operation, and the like. The operation cover 116 is provided with keys corresponding to various operations, such as a dial key 116a, and a display unit 116b.

The operation section D is arranged above the reading system C so as to be rotatable in the direction of arrow f in FIG. FIG. 8 is a diagram showing the open / closed state of the operation unit and the like. One side of the operation unit D is provided with a telephone line modular 1021 for transmitting and receiving.

The recording sheet 120 is a plain paper, a plastic sheet, or another material capable of transferring ink. In this embodiment, B4 size or A4
The plain paper cut to the size is used as the recording sheet 120.

The recording sheet (hereinafter, referred to as recording paper) 120 is fed to a recording paper tray 121 by a recording paper height regulating plate 101a provided on the back of the main body upper cover 101.
Also, only a limited number of sheets are stored and stacked in the recording paper auxiliary tray 122 which can be pulled out.

The recording paper side guide 123 regulates the width direction of the recording paper 120. In FIG. 6, the recording paper 12
The pressure plate 124 provided at the bottom of the recording paper 120 is rotatably supported about a rotation shaft (not shown), rotates once by a driving system (not shown), and conveys the recording paper 120 in contact with the paper feed roller 125. , Is pressed by the pressure plate spring 124a.

The recording paper 125 transported by the rotation of the paper feed roller 125 in the direction of the arrow i is separated by the claw separation and transported one by one to the recording system B.

The recording system B employs the ink jet recording apparatus as described above. The recording system B records an image on the recording paper 120 supplied from the paper supply system A based on an image signal transmitted from another device or an image signal transmitted from the reading system C.

The recording paper presser 126 is pressed against the LF roller 127, serves as an upper guide for the recording sheet 120 conveyed from the paper feeding system A, and also has a pinch roller 126.
a is opposed to the LF roller 127.

The recording cartridge 128 and the platen plate 12
9, the recording operation is performed by the recording cartridge 128 while the recording sheet 120 is being conveyed. In the present embodiment, the recording cartridge 128 is configured to perform serial printing while moving in the width direction of the recording sheet 120 by a motor and a driving system (not shown).

After printing and recording, the recording sheet 120 is moved out of the machine by an arrow e so that the printing surface is not stained by the spur roller 130b facing the discharge roller 130a.
In the direction shown in FIG.
The sheets are stacked on a discharge auxiliary tray 132 which is movable in the direction.

FIG. 8 shows a state in which the document loading table 104 is rotatably supported in the direction of arrow g by the rotation center (not shown) of the main body upper cover 101. The recording cartridge 128 is detachable in the direction of arrow h.

FIG. 9 is a block diagram showing the configuration of the control system of the multifunction peripheral. The control system displays a control unit 1023 for controlling the multifunction peripheral, a power supply unit 1032 for supplying power to the entire facsimile machine, a modem board unit 1020, a communication board unit 1022 for connecting a telephone, and contents input from the operation unit D. A display unit 116b and the like are provided.

The control unit 1023 controls the C
It includes a PU 1029, a ROM 1031 storing various programs and various data, a RAM 1030 used as a work area of the CPU 1029 and temporarily storing various data such as the number of recordings and storing and registering various data, and an input / output switching interface 1028.

The line memory 1025 is a line memory for storing the image of each line of the image data, and stores one line of image data from the reading system C when transmitting or copying a document. In the case of the reception, the decoded data for one line is stored.

The image data stored in the line memory 1025 is added with a recording system control code by the CPU 1029, and the recording system B is transmitted from the input / output switching interface 1028.
Is output to the CPU 1051 incorporated in the
1 performs image recording by decoding a recording system control code.

The encoding / decoding unit 1026 encodes the image information to be transmitted by MH encoding or the like, or decodes the received encoded image data to convert it into image data. The memory buffer 1027 stores the transmitted and received encoded image data.

In such a multifunction peripheral, image data and text data can be output from the peripheral computer E to the recording system B via the printer interface 1033, and image data read from the reading system C can be output from the peripheral computer E. Can be captured.

The recording system may be an electrophotographic recording system using a toner (laser beam printer) or a thermal transfer recording system using an ink sheet and a thermal head, in addition to the ink jet recording system.

Although the contact sensor is used as the reading means, it may be constituted by a reduction optical system using a light source and a CCD.

Further, in this embodiment, the case where the reading reference means is constituted by a roller has been described. However, it is sufficient that a flat surface is secured, and the reading reference means may be constituted by a molded part (resin material part) or a sheet metal. Alternatively, a PET film may be attached to the surface serving as the white reference color, and a white sheet such as a PVC sheet or paper may be used as long as the surface does not easily become dirty.

Further, the mechanism of the paper feeding system is of the claw separation type, but may be of another separation type such as friction separation or retard separation.

[0076]

According to the document reading apparatus of the first aspect of the present invention, there is provided an image reading means for reading an image described on a document, and the image reading means is provided on a surface opposed to a reading position of the document from which the image is read. In the document reading apparatus in which the reading reference means is arranged, the reading reference means has at least one color other than the reading reference color in addition to the reading reference color, so that always stable white is used as the reading reference color, and the facsimile apparatus When transmitting a manuscript, it is possible to transmit good image data without transmitting extra image data in a portion outside the width of the manuscript. Boundary detection can be performed on the width, and image data other than the document width can be discarded and used as image data. That is, when reading an original of a small paper size such as a postcard or a business card, image data of the same size can be obtained.

Therefore, when the facsimile function and the scanner function are combined, the usability can be improved and the quality can be improved. Further, it is possible to always provide the user with an image having a stable color tone as in the initial state with respect to changes in time and environment. Further, the quality can be stabilized without requiring replacement of parts. The same effect can be obtained in the document reading method according to the twelfth aspect.

According to the document reading apparatus of the second aspect,
Since the reading reference means includes a switching means for switching between the reading reference color and a color other than the reading reference color, the reading reference means can switch between reading as a facsimile apparatus and reading as a scanner.

According to the document reading device of the third aspect,
Since the switching unit switches between the reading reference color and a color other than the reading reference color according to the use of the image to be read, the switching can be performed automatically.

According to the document reading apparatus of the fourth aspect,
Since the reading reference color is white, it can be used as a reading reference color or a background color at the time of reading.

According to the document reading apparatus of the fifth aspect,
Since a color other than the reading reference color is black, when reading a document as a scanner for reading image data into a PC,
The boundary can be reliably detected with respect to the document width.

According to the document reading apparatus of the sixth aspect,
Since the image reading means includes the transport means for transporting the document, the size and cost of the entire apparatus can be reduced.

According to the document reading apparatus of the seventh aspect,
Since the image reading means has a light source for illuminating the document and a reading element for reading a reflected light image obtained from the document, it can be realized at the same cost as a conventional reading optical system.

According to the document reading apparatus of the eighth aspect,
Since the reading reference unit has a width equal to or larger than the reading width of the image reading unit, the reading reference color can be set to the entire reading width of the document.

According to the document reading apparatus of the ninth aspect,
Since the reading reference color and the colors other than the reading reference color are uniform colors with respect to the reading width of the image reading unit, the reading reference color can be stable over the entire reading width of the document.

According to the document reading apparatus of the tenth aspect, since it has a color reading function, it is possible to read a stable white reference color for three pieces of RGB image information.

According to the document reading apparatus of the present invention, since a scanner function and a facsimile function capable of reading a read image into a personal computer are provided, two or more functions can be performed by a single apparatus. Can be used.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a document reading apparatus according to a first embodiment.

FIG. 2 is a diagram illustrating a configuration of a reading reference roller.

FIG. 3 is a diagram showing an indexing position of a reading reference roller 16 during reading.

FIG. 4 is a graph showing an output waveform of the contact sensor 15;

FIG. 5 is a graph showing an output waveform of the contact sensor 15.

FIG. 6 is a cross-sectional view illustrating a configuration of a multifunction peripheral according to a second embodiment.

FIG. 7 is a perspective view showing an appearance of the multifunction peripheral shown in FIG. 6;

FIG. 8 is a diagram illustrating an open / closed state of an operation unit and the like.

FIG. 9 is a block diagram illustrating a configuration of a control system of the multifunction peripheral.

FIG. 10 is a cross-sectional view illustrating a configuration of a document reading apparatus using a conventional 1 × optical system.

FIG. 11

[Explanation of symbols]

 6, 103 Document 15, 112 Contact sensor 16, 113 Reading reference roller 16b Black mylar 16c White mylar 16d Axis

[Procedure amendment]

[Submission date] November 19, 1998 (1998.11.
19)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a document reading apparatus according to a first embodiment.

FIG. 2 is a diagram illustrating a configuration of a reading reference roller.

FIG. 3 is a diagram showing an indexing position of a reading reference roller 16 during reading.

FIG. 4 is a graph showing an output waveform of the contact sensor 15;

FIG. 5 is a graph showing an output waveform of the contact sensor 15.

FIG. 6 is a cross-sectional view illustrating a configuration of a multifunction peripheral according to a second embodiment.

FIG. 7 is a perspective view showing an appearance of the multifunction peripheral shown in FIG. 6;

FIG. 8 is a diagram illustrating an open / closed state of an operation unit and the like.

FIG. 9 is a block diagram illustrating a configuration of a control system of the multifunction peripheral.

FIG. 10 is a cross-sectional view illustrating a configuration of a document reading apparatus using a conventional 1 × optical system.

[Description of Signs] 6, 103 Document 15, 112 Contact Sensor 16, 113 Reading Reference Roller 16b Black Mylar 16c White Mylar 16d Axis

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takayuki Nishinohara 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Atsushi Saito 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon F term (reference) 5C072 AA01 BA08 DA12 EA05 FB12 LA15 NA01 NA06 RA01 RA16 UA13

Claims (12)

[Claims] 1. A document reading apparatus comprising: image reading means for reading an image written on a document, wherein the reading reference means is arranged on a surface facing a reading position of the document from which the image is read; A document reading apparatus having at least one color other than the read reference color in addition to the read reference color. 2. The document reading apparatus according to claim 1, wherein the reading reference unit includes a switching unit that switches between the reading reference color and a color other than the reading reference color. 3. The document reading apparatus according to claim 2, wherein the switching unit switches between the reading reference color and a color other than the reading reference color according to a use of the image to be read. 4. The document reading apparatus according to claim 1, wherein the reading reference color is white. 5. The document reading apparatus according to claim 1, wherein a color other than the reading reference color is black. 6. The document reading apparatus according to claim 1, wherein said image reading means includes a transport means for transporting said document. 7. The image reading device according to claim 1, wherein the image reading means includes a light source for illuminating the document and a reading element for reading a reflected light image obtained from the document.
The document reading device according to any one of the above. 8. The document reading apparatus according to claim 1, wherein the reading reference unit has a width equal to or larger than a reading width of the image reading unit. 9. The image forming apparatus according to claim 1, wherein the reading reference color and the color other than the reading reference color are uniform colors with respect to a reading width of the image reading unit. Original reading device. 10. The document reading apparatus according to claim 1, having a color reading function. 11. The document reading apparatus according to claim 1, further comprising a scanner function capable of taking in a read image into a personal computer, and a facsimile function. 12. A document reading method for reading an image written on a document at a reading position, wherein a color of a surface facing the reading position is changed to a reading reference color or a color other than the reading reference color according to a use of the image to be read. A document reading method characterized by switching to a different color.