JP3179818B2 - Reflective and transmissive document reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scanner, DC, DC
The present invention relates to a reflection / transmission original reading apparatus used for C or the like.

[0002]

2. Description of the Related Art Conventionally, as a reflection / transmission original reading apparatus capable of reading a reflection original and a transmission original, for example, Japanese Unexamined Patent Publication No.
Japanese Unexamined Patent Application Publication No. 174462/1992. This will now be described with reference to FIG. First, when reading a reflection document, a reflection document (not shown) is placed on the document table 2 on the upper portion of the main body 1 with the image surface facing down, and the illumination lamp 3 is turned on in this state. The reading unit 4 is moved along the document table 2 to read a document image, the light of the read image is imaged by the image forming element 5, and photoelectric conversion is performed through the infrared cut filter 6. By leading the image data to the solid-state imaging device array 7 as a device, read image information is output. On the other hand, when reading a transparent original, the film image F projected by the film projector 8 is reflected by a reflection mirror using a film projector 8 installed at a position other than the reading position of the reflection original on the upper part of the main body 1. The light path is directed downward by 9 and an image is formed on the document table 2 via the Fresnel lens 10 and the diffusion plate 11, whereby the image is read by the image reading unit 4. In this case, it is characterized in that the reading unit 4 is fixed and the film image F is moved.

FIG. 15 shows an example of an optical system movable type, and FIG. 16 shows an example of an original moving type reflection / transmission original reading apparatus. In FIG. 15, an illumination light source 13 for a transparent original is provided at an upper portion of the main body 12, and an illumination light source 15 for a reflective original and a reflector 16 are arranged below a contact glass 14 below the lower portion. A first traveling body mirror 17, a second traveling body mirror 18, and a third
A traveling body mirror 19 is sequentially arranged, and an imaging element 20 and a photoelectric conversion element 21 are sequentially arranged at a subsequent stage. In this case, reading of a transparent original (not shown) is performed by detecting the light with the photoelectric conversion element 21 using the illumination light source 13 for the transparent original, while reading of a reflective original (not shown) is performed using the illumination light source 15 for the reflective original. Read. Also in FIG. 16, an image is read in substantially the same manner as in FIG. 15, except that the transmission and reflection originals are moved.

[0004]

In the apparatus shown in FIG. 14, a transparent original read by a scanner is generally 35 m.
m, 4 × 5 inch film is the main one. If these are read at the same density as the reflective original and enlarged to the same size, the read pixels become coarse and sufficient quality cannot be obtained. Moreover, in this case, since the image once formed on the diffusion plate 11 is read through the Fresnel lens 10, the image quality is deteriorated, and it is difficult to read with high quality. Generally, an image recorded on a transmissive film used as a transmissive original is of high quality, and it is an essential condition that an image read from the image must be of high quality. For this reason, conventionally, a transparent original is read by being enlarged by an enlargement optical system.

[0005] As an example, an A4 size original is used as a reflection original and its short side direction (210 mm) is set to 500 mm.
When reading with a 0 pixel sensor, the original surface should be 0.042 mm
The sampling may be performed at intervals, while the short side (24 mm) of a 35 mm film as a transparent original is the same as that of the transparent document.
0.0048 mm for reading with a 000 pixel sensor
Interval sampling is required. Therefore, when reading a transmissive original with the same number of pixels per line or the same as that of a reflective original, the imaging magnification is changed in the main scanning direction, and the feed speed of the scanner is reduced in the sub-scanning direction. It is necessary to improve the feeding accuracy of the scanner, and high accuracy is required for the apparatus itself. Also, the optical moving type shown in FIG.
It is technically difficult to drive with high accuracy over a wide speed range so that both reflection and transmission can be handled in any case of the original moving type. It will be expensive.

Further, when reading a transparent original by the optical system moving type shown in FIG.
Since the driving and reading are performed in synchronization with the third traveling body mirrors 17, 18, and 19, a sensor for obtaining such synchronization is required, and the cost becomes high. Moreover, the main body 1
Since the light source and the drive motor are mounted on the pressure plate portion 2, it becomes heavy, and it is difficult to normally open and close the main body door. FIG.
In the case of the original moving type, if the illumination light source is attached,
The work cannot be performed by mixing the reflection document and the transmission document, which is inconvenient in terms of work efficiency.

In addition, when a transparent original is read, the white reference uses a light beam transmitted through the contact glass on which the transparent original is not placed. Noise such as streaks is generated. Also, in the reading portion, since the transparent original performs high-density reading, there may be a problem even if the contact glass is not a problem when reading a reflective original. The whole must be replaced, which is wasteful.

[0008]

According to the first aspect of the present invention, there is provided a reflecting original mounting means for mounting a reflecting original,
Reflective original illumination means and reflective original mirror for illuminating reflective originals
Original reading optical system provided with an element and a reflective original image forming element
Is provided, and a transparent original mounting means for mounting the transparent original is provided,
Transparent original movement for moving the mounted transparent original
Means for illuminating the transparent document
And a transparent document mirror element and a transparent document image forming element.
An over-document reading optical system is provided in front of the reflective original reading optical system.
The reflective original image forming element and the transparent original reading optical system
Detects the light imaged by the transmission original imaging element
Read and transmit reflective originals with a single photoelectric conversion element
The photoelectric conversion is performed so that switching between original reading and original reading can be performed.
Move the element between the reflective original image position and the transparent original image position.
Arranged freely .

According to a second aspect of the present invention, in the first aspect of the present invention, the reflection original image forming position and the transmission original image forming position are determined.
So that the common mirror and the reflective original reading optical system
It is arranged movably between the transparent original reading optical system .

According to the third aspect of the present invention, the first or second aspect is provided.
In the invention described in the above, the reflection original is set in the transmission original reading optical system.
Lighting means were provided .

[0011]

According to the first aspect of the present invention, the reflection original and the transmission original
The reading of the manuscript is performed using the same photoelectric conversion element.
Different accuracy requirements for transmissive and reflective originals
A suitable read drive method can be adopted.
Use different optics to increase design flexibility
And provide high-precision lenses without excessive design burden.
It becomes possible. In addition, when reading between reflective and transparent originals,
The switching of the sampling is performed by moving the photoelectric conversion element.
Therefore, a common photoelectric conversion means can be used.
And the number of parts can be reduced .

According to the second aspect of the present invention, the reflection original and the transmission
Switching of reading with the original is performed by moving the shared mirror
By using common photoelectric conversion means
And the number of parts can be reduced .

According to the third aspect of the present invention, the transparent original reading light
High-density due to the provision of reflective document illumination means in the academic system
Reads reflective originals that require reading
It becomes possible .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described with reference to FIGS. FIGS. 1A and 1B show the entire configuration of a transflective original reading apparatus. This apparatus includes a reflection original reading unit 22
And a transparent original reading unit 23. First, in the reflection document reading section 22, a reflection document mounting means 25 (contact glass) for mounting the reflection document 24 is provided at the upper part of the main body. Further, in the transparent original reading section 23, a transparent original mounting means 27 for mounting a transparent original 26 (see FIGS. 3 and 6 described later) is provided. The transparent original mounting means 27 can be moved by the transparent original moving means 28. Above the transparent original 26, a transparent original illumination light source 29 as a transparent original illuminating means for illuminating the transparent original 26 is provided.

A reflection / transmission original reading optical system 30 is provided in a space area below the main body of the apparatus separated into the reflection original reading section 22 and the transmission original reading section 23 as described above. The reflection / transmission document reading optical system 30 is provided with a reflection document illuminating means 33 including a reflection document illuminating light source 31 and a facing reflection plate 32, and a first traveling mirror is provided below the reflection document illuminating means 33. 34, a second traveling body mirror 35, an imaging lens 36 as an imaging element, and a photoelectric conversion element 37 are sequentially arranged. The reflection / transmission original reading optical system 30 can freely move between the reflection original imaging position of the reflection original reading unit 22 and the transmission original imaging position of the transmission original reading unit 23. .

Here, the second traveling body mirror 35 of the reflection / transmission original reading optical system 30 is disposed close to the transmission original reading section 23 with respect to the reflection original reading position of the reflection original reading section 22. I have.

A method of reading the reflection original 24 and the transmission original 26 in such a configuration will be described. First,
A method for reading the reflection original 24 will be described with reference to FIG. First, the reflection / transmission original reading optical system 30 is moved to the reflection original image forming position (reflection original mounting unit 25) in the reflection original reading unit 22.
To the lower position). In this state, when reading the reflection original 24 mounted on the reflection original mounting means 25, the reflection original illumination light source 31 is turned on, and the reflection original illumination means 33, the first traveling mirror 34, and the second traveling The body mirror 35 relatively moves along the document surface, and the imaging lens 3
The image can be read by detecting the image formed by the photoelectric conversion element 37. Note that such a reading method is the same as a general fixed document reading method (see FIG. 15).

A method for reading the transparent original 26 is shown in FIG.
This will be described based on (b). Reflective transmission original reading optical system 30
Is moved to the transparent original image forming position (the position below the transparent original mounting means 27) in the transparent original reading section 23, and the first traveling mirror 34, the second traveling mirror 35, and the imaging lens 36 are rearranged. When reading the transparent original 26 mounted on the transparent original mounting means 27 in such a state, the transparent original illumination light source 29 is turned on, the reflection / transmission original reading optical system 30 is fixed, and the transparent original moving means is read. 28 transparent document 2
6 is moved, and the photoelectric conversion element 37 is
The reading can be performed by detecting at. In this case, the transparent original illumination light source 29 and the transparent original mounting means 27
By providing the diffusing plate 38 between the two, uniform illumination can be performed. The driving method of the transparent original moving unit 28 for moving the transparent original 26 includes a ball screw,
It can be performed with high accuracy using a driving method such as a linear direct motor (LDM).

Next, the reason why the optical arrangement of the second traveling body mirror 35 in the reflection / transmission original reading optical system 30 is set closer to the transmission original reading section 23 will be described. Generally, since the transmission original 26 must be read in an enlarged manner, the imaging lens 36 must be close to the original surface, and the distance between the photoelectric conversion element 37 and the imaging lens 36 must be increased. Therefore, as shown in FIG. 2, consider a case where the second traveling body mirror 35 is brought to the opposite side of the reading position of the transparent original 26 from the transparent original reading unit 23. Now, when the first traveling body mirror 34 and the second traveling body mirror 35 are brought close to each other when reading a transparent original, it is difficult to secure a space for separating the photoelectric conversion element 37 from the imaging lens 36 depending on the lens. In order to secure such a space, the size of the apparatus itself must be increased.

In order to avoid such an increase in the size of the apparatus, the second traveling body mirror 35 is positioned on the side of the transparent original reading section 23 so that, as shown in FIG. When the distance between the document surface and the imaging lens 36 is minimized by bringing the first traveling body mirror 34 and the second traveling body mirror 35 closest to each other, the space separating the photoelectric conversion element 37 from the imaging lens 36 is reflected. It can be sufficiently secured on the document reading unit 22 side. For such a reason, by arranging the optical arrangement of the second traveling body mirror 35 on the side close to the transparent original reading section 23, it is possible to avoid an increase in the size of the apparatus.

Next, a method for loading the transparent original 26 in the transparent original mounting means 27 will be described with reference to FIGS. As a method for loading the transparent original 26, there are two types of front loading as shown in FIG.
The side-loading type is shown below. First, the case of front loading will be described. In general, it is desirable to read a document at the center where the performance of the lens can be maximized. For this reason, as shown in FIG. 6, the transparent original 26 is fixed by being sandwiched between transparent original mounting means 27 made of a transparent glass member, and the transparent original mounting means 27 holding the transparent original 26 therebetween.
Is inserted into a groove 39 a formed in the fixed frame 39. FIG. 7 shows that the transparent original mounting means 27 is
9 shows a state in which it is installed. Then, the transparent document 26 set in this way is moved by the document moving means 40.
Is moved to the central reading position by the
Is read while moving in the sub-scanning direction.

Next, in the case of the side loading shown in FIG. 7, as in the case of FIG. 6, the transparent document mounting means 27 on which the transparent document 26 is set is mounted on the fixed frame 42.
The reading of the transparent original 26 can be performed by the reading scanning unit 41 while moving in the sub-scanning direction.

As described above, since the reading of the reflection original 24 and the reading of the transmission original 26 are performed by the same reflection / transmission original reading optical system 30, the different requirements of the transmission original 26 and the reflection original 24 are met. Read driving method can be adopted. Therefore, this eliminates the need for imposing an excessive design burden and design cost on the scanning system of the reading drive, and makes it possible to manufacture a highly accurate and low-cost scanner.

Further, since the reflection original 24 and the transmission original 26 are read using separate original mounting means (the reflection original mounting means 25 and the transmission original mounting means 27), the transparent original mounting means 27 is not damaged when reading the transmission original. When an adverse effect due to contamination or contamination occurs, the transparent document mounting means 27 may be simply replaced, and such a work can be easily performed. In this case, the size of the reflection original mounting means 25 is usually A4 or A
3 is substantially large, so it is practically inconvenient to prepare a spare one, and it is not easy to replace it. It is also easy to put it in place, and since it has a replaceable shape from the beginning, the above-mentioned replacement work does not pose any problem.

Further, since the second traveling body mirror 35 is provided on the side of the transparent original reading section 23 with respect to the reflection original reading position, the first and second traveling body mirrors 34.35 are read when the transparent original 26 is read. Place the document surface closest to the imaging lens 36
When the distance between them is minimized, a space for separating the photoelectric conversion element 37 from the imaging lens 36 can be sufficiently secured on the side of the reflection original reading unit 22. Accordingly, an optimal optical arrangement for magnifying and reading the transparent original 26 can be easily obtained.

Next, a second embodiment will be described with reference to FIGS. FIG. 8 shows the overall configuration of the present apparatus, which is roughly divided into a reflection original reading section 43 and a transparent original reading section 44. In the reflection document reading section 43, the reflection document 45
Document mounting means 46 (contact glass) for mounting
Is provided. Below this reflection original mounting means 46, there is provided a reflection original illumination means 49 comprising a reflection original illumination light source 47 and an opposing reflection plate 48. A first traveling body mirror 50 and a second traveling body mirror 51 are provided on the optical path of the light reflected by the reflection original illumination light source 47.
Document mirror element 54 comprising
(Note that the first traveling body mirror 50
And the second traveling body mirror 51 is composed of a traveling body mirror 52
Is formed). In addition, the second traveling body mirror 51
And a fixed mirror 53, a reflection original image forming element 55 is provided. These reflection original illumination means 49
, A reflection original mirror element 54 and a reflection original imaging element 55
Constitutes the reflection original reading optical system 56.

On the other hand, in the transparent original reading section 44, a transparent original mounting means 57 for mounting the transparent original 26 (see FIG. 6).
Is provided. A transparent original moving means 58 for moving the transparent original mounting means 57 is provided. Further, a transparent original illumination light source 59 as a transparent original illuminating unit positioned above the transparent original mounting unit 57, and a transparent original image forming element 6 located below the transparent original mounting unit 57
The transparent original reading optical system 64 is composed of 0 and a transparent original mirror element 63 composed of fixed mirrors 61 and 62.

The reflection original image forming element 55 of the reflection original reading optical system 56 and the transmission original reading optical system 64
One photoelectric conversion element 65 for detecting the light imaged by the transmission original image forming element 60 is provided. In this case, the photoelectric conversion element 65 is connected to the reflection original 45.
In order to be able to switch between the reading of the original and the reading of the transparent original 26, it is movably arranged between the reflection original imaging position P and the transparent original imaging position Q.

Further, below the transmissive original mounting means 57, there is provided a reflective original illumination light source 66 as a reflective original illumination means.
Is provided.

In such a configuration, when reading the reflection original 45, the reflection original 45 mounted on the reflection original mounting means 46 includes the reflection original illuminating means 49, the first traveling mirror 50, and the second traveling mirror 50. The original image is read by the body mirror 51 moving along the original surface, and the read image is formed by the reflective original image forming element 55, and the reflected original image is formed by the fixed mirror 53. The image is detected by the photoelectric conversion element 65 located at the position P, whereby the image of the reflection original 45 is read. On the other hand, the transparent original 26
Is read, the photoelectric conversion element 65 is moved from the reflective original image forming position P to the transparent original image forming position Q, and then is mounted on the transparent original mounting means 57 while being illuminated by the transparent original illuminating light source 59. The transparent original 26 is moved to the transparent original moving means 58.
The image of the transparent original 26 can be read by imaging the original image by the transparent original image forming element 60 and detecting it by the photoelectric conversion element 65 through the fixed mirrors 61 and 62. . In this case, the diffusion plate 6 is disposed between the transmission original illumination light source 59 and the transmission original mounting means 57.
By providing 7, uniform illumination can be performed.
Further, a transparent original moving means 58 for moving the transparent original 26
Can be performed with high accuracy by using a driving method such as a ball screw or a linear direct motor (LDM).

As described above, the method for detecting the reading of the reflection original 45 and the transmission original 26 is performed while moving the reflection original 45 and the transmission original 26 by using the same photoelectric conversion element 65. It is possible to adopt a reading drive method corresponding to each of the different required precisions, and it is not necessary to apply an excessive design burden or design cost to the reading drive scanning system. Further, since different optical systems are used for reflection and transmission here, the degree of freedom in design is improved, and the development of a highly accurate lens is facilitated without imposing an excessive design burden. Therefore, from such a thing,
A high-precision reading can be performed and a low-priced scanner can be manufactured. Further, the same effects as the effects described in the first and second aspects of the present invention can be obtained.

Further, since the switching between the reading of the reflection original 45 and the reading of the transmission original 26 is performed by moving the photoelectric conversion element 65, a common photoelectric conversion means can be used, and the number of parts can be reduced. As a result, a low-cost document reading device can be obtained.

Further, in the second embodiment, since the reflective original illumination light source 66 is provided in the transparent original reading section 44, a reflective original requiring high-density reading (for example, an original requiring enlargement reading) is required. ) Can also be read, thereby expanding the applicable range of reading.

FIG. 9 shows a modification of the configuration shown in FIG. In this case, the transmissive original illumination light source 59 in the transmissive original reading unit 44, the transparent original mounting unit 57, and the transparent original moving unit 58 are housed in a lower housing, so that the original surface of the reflective original reading unit 43 is It is formed so as to have the same height as. As a result, the size of the apparatus can be further reduced.

Next, a third embodiment will be described with reference to FIGS. This embodiment shows a modification of the image forming means in the above-described second embodiment (see FIG. 8). That is, in the device of FIG.
Although the movement of the mirror 5 is controlled between the two optical systems 56 and 64, the photoelectric conversion element 65 is fixed here, and the mirror side is moved mutually.

More specifically, in FIG. 10, a common mirror 68 is provided as a common mirror movable between the reflection original reading optical system 56 and the transmission original reading optical system 64,
When reading the reflective original 45, the common mirror 68 is moved to the left transparent original reading optical system 64 and reflected by one mirror surface. When reading the transparent original 26, the common mirror 68 is reflected on the right side. The image is moved to the original reading optical system 56 and is reflected by the other mirror surface, whereby the reflected original image forming position P and the transparent original image forming position Q are made coincident with each other, and guided to the fixed photoelectric conversion element 65, thereby forming an image. Reading was performed. Thus, the reflection original 45 and the transmission original 2
6 is switched by moving the common mirror 68,
Since a common one can be used as the photoelectric conversion means, the fixed mirrors 53 and 62 become unnecessary, thereby realizing a low-cost original reading apparatus.

FIG. 11 is similar to FIG. 9 except that the transparent document reading section 44 has no projection in the configuration of FIG. 10 and is housed inside the housing. With this configuration, the device can be made compact as described above.

FIG. 12 shows a modification of the moving mechanism of the common mirror 68 shown in FIG. Here, rotating mirrors 68a and 68b as common mirrors that rotate around one point
Is provided. That is, when reading the reflection original 45, the rotating mirror 68b can be guided to the photoelectric conversion element 65 by rotating the turning mirror 68b to the position shown by the solid line below to change the optical path. The turning mirror 68b is turned to the position shown by the broken line to move the turning mirror 6 above.
Since the light can be guided to the photoelectric conversion element 65 by being reflected by the light 8a, the original image can be read.

FIG. 13 shows the configuration of FIG.
As in the case of 11, the projection of the transparent document reading section 44 is eliminated so that the transparent document reading section 44 is accommodated in the housing. In this case, the size can be further reduced.

[0040]

According to the first aspect of the present invention, a reflection original is mounted.
The reflective original mounting means for providing, to illuminate the reflection document
Reflective original illumination means, reflective original mirror element and reflective original imaging
Provide a reflective original reading optical system with
A transparent document mounting means for mounting is provided, and the mounted
A transparent original moving means for moving the transparent original;
Transparent original illuminating means for illuminating excess original and transparent original mirror element
A transparent original reading optical system having a
The reflective original image forming element of the reflective original reading optical system provided.
And the transparent original image forming element of the transparent original reading optical system
One photoelectric conversion element for detecting the imaged light
To switch between reading a reflective original and reading a transparent original.
The photoelectric conversion element is used to image
Between the original position and the transparent original image forming position.
In order to meet the different requirements for transmissive and reflective originals,
It is possible to adopt a suitable read drive method,
Moreover, since different optical systems are used,
The degree of freedom is improved, and high precision
Can be provided. Also, the reflection field
Switch between manuscript reading and transparent manuscript reading
Then, the photoelectric conversion element is moved to the reflective original image forming position and the transparent original image forming position.
As it is movably arranged between the
It is possible to reduce the number of parts by using common
This allows for a much lower cost document reading device.
That can be done .

According to a second aspect of the present invention, in the first aspect, the image forming position of the reflective original and the image forming position of the transparent original are different from each other.
The common mirror should be transparent to the reflective original reading optical system so that they match.
Since it is movably arranged between the over-document reading optical system,
Common means can be used as
Thereby, the same effect as that of the third aspect can be obtained.
You can do it .

The third aspect of the present invention provides the first or second aspect.
In the invention described above, the reflected original is illuminated in the transparent original reading optical system.
Reflection means requiring high-density reading
It is also possible to read documents,
Can be further expanded .

[Brief description of the drawings]

FIGS. 1A and 1B show a first embodiment, in which FIG. 1A is a cross-sectional view showing a state in which a reflection / transmission document reading optical system is positioned in a reflection document reading section, and FIG. FIG. 4 is a cross-sectional view illustrating a state when an optical system is positioned in a transparent original reading unit.

FIG. 2 is a cross-sectional view illustrating a state where a second traveling body mirror is arranged at a position opposite to that of FIG. 1 in comparison;

FIG. 3 is a perspective view showing an external configuration of a front loading type for a transparent original.

FIG. 4 is a perspective view showing an external configuration of a side loading type for a transparent original.

FIG. 5 is a perspective view showing a state in which a transparent original is fixed to a transparent original mounting means in the front loading type.

FIG. 6 is a perspective view showing a state before the transparent original is fixed to the transparent original mounting means in the front loading type.

FIG. 7 is a perspective view showing a state in which a transparent original is fixed to a transparent original mounting means in the side loading type.

FIG. 8 is a sectional view showing a second embodiment.

FIG. 9 is a cross-sectional view showing a shape when a flat shape is formed without providing a step on an upper surface portion of the device of FIG. 8;

FIG. 10 is a sectional view showing a configuration in a case where a common mirror is provided on an image forming optical path in the third embodiment .

11 is a cross-sectional view showing a shape when a flat shape is formed without providing a step on an upper surface portion of the device of FIG.

FIG. 12 is a cross-sectional view illustrating a configuration when a rotating mirror is provided on an imaging optical path.

FIG. 13 is a cross-sectional view showing a shape when a flat shape is formed without providing a step on an upper surface portion of the device in FIG.

FIG. 14 is a cross-sectional view showing a conventional reflection and transmission document reading apparatus capable of reading a reflection document and a transmission document.

FIG. 15 is a cross-sectional view showing an optical system moving type document reading device for reflection and transmission.

FIG. 16 is a cross-sectional view showing an original moving type original reading apparatus for reflection and transmission.

[Explanation of symbols]

 22 Reflective Document Reading Unit 23 Transparent Document Reading Unit 24 Reflective Document 25 Reflective Document Mounting Means 26 Transparent Document 27 Transparent Document Mounting Means 28 Transparent Document Moving Means 29 Transparent Document Lighting Means 30 Reflective / Transparent Document Reading Optical System 33 Reflective Document Lighting Means 34 1 runner mirror 35 2nd runner mirror 36 imaging element 37 photoelectric conversion element 45 reflective original 46 reflective original mounting means 49 reflective original illumination means 54 reflective original mirror element 55 reflective original imaging element 56 reflective original reading optical system 57 transmission Document mounting means 58 Transparent document moving means 59 Transparent document illuminating means 60 Transparent document imaging element 63 Transparent document mirror element 64 Transparent document reading optical system 65 Photoelectric conversion element 66 Reflecting document illuminating means 68, 68a, 68b Shared mirror P Reflecting document Image position Q Transparent original image formation position

Claims (3)

(57) [Claims] 1. A reflection document mounting means for mounting a reflection document.
A reflection original illuminating means for illuminating the reflection original and a reflection
Reflective original with original mirror element and reflective original image forming element
A transparent document mounting hand that has a reading optical system and mounts a transparent document
A step is provided, and a transparent document for moving the loaded transparent document is provided.
A transmissive original for illuminating the transmissive original, provided with an excess original moving means
Illuminating means, transmissive original mirror element and transmissive original image forming element
A transparent original reading optical system provided with
The reflective original image forming element of the optical system and the transparent original reading light
Each image was formed by the transparent original image forming element
A single photoelectric conversion element for detecting light is provided to read reflected documents.
So that you can switch between
The photoelectric conversion element is positioned at a reflection original image forming position and a transmission original image forming position.
A transmissive original reading device, which is movably arranged between the original and the original. 2. The image forming method according to claim 1, further comprising the steps of:
So that the common mirror and the reflective original reading optical system
2. The transflective original reading apparatus according to claim 1, wherein the transflective original reading apparatus is movably arranged between the transmissive original reading optical system . 3. A reflection original illuminating device in a transmission original reading optical system.
3. The transflective document reading apparatus according to claim 1 , further comprising a step .