JP2551687B2 - Copying device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a copying apparatus for scanning and copying an image recorded on a document.

[Prior art]

In recent years, a copying apparatus capable of copying a document such as a slide film having a small image area has been developed (see JP-A-62-262036 and JP-A-2-158727). When copying an image recorded on this original, it is necessary to copy at a high magnification because the image is small (hereinafter referred to as a high-magnification original, which is distinguished from a normal original). This magnification is usually 400
It is said to be about%. Therefore, the high-magnification original has a scanning unit dedicated to the high-magnification original provided in a place different from that of the normal original, and an independent magnifying lens system is arranged in the scanning unit. Since the optical path that has passed through this lens system must match the optical path of a normal document, a part of the scanning mirror arranged on the optical path of a normal document is a half mirror, and one of them is reflected to form a photosensitive material. To the light-sensitive material.

It is also possible to provide a mechanism for switching the scanning mirrors arranged on the optical path to guide the light rays from the two optical paths to the photosensitive material.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional structure, when a half mirror is used, the light amount loss due to this half mirror is large, and it is necessary to increase the light amount of the light source, which is wasteful.
Further, when the scanning mirror switching mechanism is provided, it is necessary to accurately control the position of the scanning mirror, which complicates the structure of the switching mechanism.

In view of the above facts, the present invention has an object to obtain a copying apparatus which has no light amount loss and can switch the light rays from two optical paths and guide them to a photosensitive material without making a special switching mechanism. is there.

[Means for solving the problem]

The invention according to claim (1) is arranged such that the incident angle of the optical axis is 45 °, and the optical axis of the light beam reflected on one side is incident on the other side and the optical axis is inverted by 180 °. And a first scanning means for moving the image recorded on the first document by moving it along the first document which is fixedly arranged, and guiding the image to the scan mirror, and a high magnification is required. And a second scanning unit having a scanning optical path including an optical axis of a light beam reflected by the other scanning mirror while scanning the image recorded on the second original by moving the second original. Moving means for moving the pair of scanning mirrors over a range of movement during normal scanning, and the other scanning mirror by the second scanning means when the scanning mirror is moved over the range by the moving means. A retracting means for retracting from the scanning optical path, It is.

The invention according to claim (2) is arranged such that the incident angle of the optical axis is 45 °, and the optical axis of the light beam reflected on one side is made incident on the other side to invert the optical axis by 180 °. And a first scanning means for moving the image recorded on the first document by moving it along the first document which is fixedly arranged, and guiding the image to the scan mirror, and a high magnification is required. And a second scanning unit having a scanning optical path including an optical axis of a light beam reflected by the other scanning mirror while scanning the image recorded on the second original by moving the second original. Excluding means for extending and moving the scanning mirror from one end to the opposite direction to the other end in the movement range during the scanning by the first scanning means and excluding it from the scanning optical path by the second scanning means.

[Action]

According to the invention described in claim (1), the first document is scanned by the first scanning unit. The reflected light beam of the image recorded on the first original document is incident on one of the scanning mirrors with the optical axis having an incident angle of 45 °.

The light beam emitted from one of the scanning mirrors is incident on the other scanning mirror and is reflected. As a result, the optical axis is inverted by 180 °, and the image is exposed on the photosensitive material.

Next, when exposing the photosensitive material with the image of the second original scanned by the second scanning means, the moving means is operated to move the pair of scanning mirrors to a position beyond the normal moving range of the first scanning means. Move to. As a result, one of the pair of scanning mirrors is retracted from the scanning optical path by the second scanning means by the retracting means. Therefore, it is not necessary to use a half mirror as the scanning mirror in order to guide the light rays from the scanning light path by the first scanning means and the scanning light path by the second scanning means to the photosensitive material, and waste of light can be omitted. Moreover, since one of the scanning mirrors can be retracted by the retracting means only by expanding the moving range of the pair of scanning mirrors, the mechanism of the moving means and the retracting means can be simplified.

According to the invention as set forth in claim (2), the excluding means causes the scanning mirror to be extendedly moved in a direction opposite to the other end from the normal scanning movement range, and is eliminated from the scanning optical path by the second scanning means. As a result, the moving structure becomes simple.

〔Example〕

FIG. 1 shows a schematic configuration diagram of the copying apparatus 10.

A photosensitive material magazine 14 is arranged on a machine base 12 of the copying apparatus 10, and a photosensitive material 16 is wound and stored in a roll shape. The light-sensitive material 16 has a photosensitive silver halide, a binder, a dye-providing substance, and a reducing agent on a support.

A cutter 18 is arranged near the photosensitive material magazine 14 so that the photosensitive material 16 drawn from the photosensitive material magazine 14 is cut into a predetermined length. Cut photosensitive material
16 is conveyed to the exposure unit 20.

An exposure device 22 is provided directly above the exposure unit 20. A document table 26 on which a first document 24 formed of a transparent glass plate is placed is arranged above the exposure device 22. The first manuscript 24 is intended for a paper of which size is designated by commonly used A4, B4, or the like. Below the platen 26,
A first scanning unit 32 composed of a light source 28 and a mirror 30 forming a part of the first scanning means is provided, and is reciprocated to the left and right in FIG. It is designed to move. The standby position of the first scanning unit 32 is on the left side in FIG. 1, and when the first scanning unit 32 moves back and forth along the document table 26 once, the first document is moved.
The image recorded on 24 is line-scanned.

The light beam from the light source 28 is applied to the image surface recorded on the first document 24, and the reflected image reaches the pair of scanning mirrors 62 and 63 via the mirror 30. The optical path indicated by the optical axis L1 in FIG. 1 forms a scanning optical path by the first scanning means.

The scanning mirror 62 on the upstream side is tilted so that the optical axis L1 is incident at an incident angle of 45 °, and the scanning mirror 63 on the downstream side is inclined.
Is inclined so that the optical axis of the light beam reflected by the upstream scanning mirror 62 is incident at an incident angle of 45 ° and the optical axis L1 is inverted. Therefore, the scanning mirrors 62 and 63 form a substantially V-shape (hereinafter, the scanning mirrors 62 and 63 are collectively referred to as a V mirror 65). It should be noted that a part of the optical axis L of the inverted optical path is a common optical path with the optical path of the optical axis L2 at the time of copying a second original 86 described later.

The V mirror 65 is fixed to a bracket 67, and the bracket 67 is supported by a long hole 68 formed in a guide rail 66 via a pin (not shown). The slot 68 is the document table.
It is formed parallel to 26 and, therefore, the bracket 67
Are moved along the document table 26 by the driving of a driving unit (not shown). Here, the movements of the first scanning unit 32 and the bracket 67 are synchronized, and the optical path lengths of the light rays reflected by the scanning mirror 62 are always matched.

A fixed focus lens 88 for changing the magnification is provided on the optical axis L. The fixed focus lens 88 moves along the optical axis L to scan a scanning image passing through the optical axis L.
It can be reduced or expanded to 25% to 400%. The maximum enlargement ratio of the first original is 200%, and the maximum enlargement ratio of the second original is 400%.

For example, the fixed-focus lens 88 is moved to the right in FIG. 1 when it is reduced to 50%, and it is first when it is enlarged to 200%.
It is designed to be moved to the left in the figure. Where 200
Position of fixed focus lens when magnifying to%, and V mirror 65
Although it is the same position as the rightmost position of, the scanning mirror 62 does not reach the rightmost position because only the first half of the original table 26 can be scanned when enlarging to 200%. The fixed focus lens 88 and the V mirror 65 do not interfere with each other.

The light beam output from the fixed focus lens 88, that is, the scanned image, is a V mirror 91 (mirror having the same structure as the V mirror 65).
91A, a mirror 91B), and a mirror 90, and reach the exposure unit 20. This V mirror 91 is
The fixed focus lens 88 is arranged for focus adjustment when the magnification is changed, and the pair of scanning mirrors 91A and 91B are attached to the bracket 94, respectively. Here, the scanning mirror 91B has a shaft 92 at the lower end thereof housed in an arcuate slot 94A formed in the bracket 94, whereby the scanning mirror 91B rotates about the shaft 92 at the upper end. It is possible.

The bracket 94 is housed in an elongated hole 99 formed in the guide rail 97 by interposing a pin (not shown). This long hole 99
The longitudinal direction of the bracket is set to the left-right direction in FIG. 1, and the bracket 94 can be slightly moved in the left-right direction in FIG. 1 by a driving unit (not shown) (moving range indicated by arrow H in FIG. 1). reference).

A step portion 104 is formed at the lower end of the guide rail 97 corresponding to the right end of the moving range H in FIG. The step portion 104 exists on the movement locus of the scanning mirror 91B, and as a result, the bracket 94 moves beyond the normal movement range H to the first position.
When moved to the right end of the figure, the scanning mirror 91B and the step 104
So that the scanning mirror 91B is in a horizontal state.
Rotated around 2.

On the other hand, the second scanning unit 76 is arranged on the base plate 74 on the right side of FIG. 1 of the document table 26, and the light rays of the transmitted image of the document 86 of FIG. Via the scanning optical path on the downstream side of the scanning mirror 91B of the V mirror 91.

That is, when the bracket 94 is within the normal moving range, the light beam from the second scanning unit is blocked by the scanning mirror 91B, but the bracket 94 exceeds the normal moving range and the right end of FIG. Scanning mirror
Since 91B is excluded from the scanning optical path by the second scanning unit 76 (horizontal state), this light beam can be guided to the downstream side of the scanning mirror 91B.

The second scanning unit 76 has a light source in its casing 78.
80 and a mirror box 82 are provided. This light source 80
The light beam emitted from the lens is output from the lower part of the casing 78 to the lens 77 and the mirror 79 via the mirror box 82. A pair of transport rollers 84 are attached to the casing 78 with the mirror box 82 interposed therebetween. There is a second gap between the transport roller 84 and the base plate 74.
A space for inserting the original 86 is formed.

The second original 86 is a reversal film, that is, a positive film for slide projection, and an extremely small image is recorded as compared with the first original 24. When the second original 86 is placed on the base plate 74 and one side is inserted into the space, the second original 86 is nipped by the conveying roller 84 and the base plate 74 and conveyed from left to right in FIG. At the time of this conveyance, the light beam output from the mirror box 82 passes through the film surface, and the scanned image reaches the mirror 72.

A reversing roller 34 is arranged on the side of the exposure unit 20,
Further, a water application section 36 is arranged on the side of the reversing roller 34. The photosensitive material 16 on which the image has been exposed in the exposure section 20 is inverted and conveyed by the reversing roller 34, and water as an image forming solvent is applied by the water applying section 36.

A heat development transfer section 38 is arranged on the side of the water application section 36 so that the water-applied photosensitive material 16 is fed.

On the other hand, a receiving material magazine 46 is arranged on the machine base 12 on the opposite side of the photosensitive material magazine 14, and the image receiving material 48 is wound into a roll and stored. The widthwise dimension of the image receiving material 48 is smaller than that of the photosensitive material 16, and a dye fixing material having a mordant is applied to the image forming surface.

A cutter 50 is also arranged in the vicinity of the material receiving magazine 46 so that the image receiving material 48 drawn from the material receiving magazine 46 is cut into a length shorter than the photosensitive material 16.
The cut image receiving material 48 is conveyed to the heat development transfer section 38. In this case, the conveyance of the image receiving material 48 is synchronized with the conveyance of the photosensitive material 16, and the photosensitive material 16 is superposed in a state of being preceded by a predetermined length.

The thermal development transfer section 38 is composed of a heating drum 40 and an endless pressure contact belt 42, and a halogen lamp 44 is arranged in the heating drum 40.

The surface of the heating drum 40 is coated with Teflon, and is further heated to about 90 ° C. by the halogen lamp 44.

In addition, the endless pressure bonding belt 42 is made of a polyamide fiber (for example, Kevlar or Nomex: du Po Po
A heat-resistant material such as a registered trademark of NT Co., Ltd.) is coated with silicon rubber containing carbon, and has electrical conductivity.

The photosensitive material 16 on which the image has been exposed is nipped and conveyed between the heating drum 40 and the endless pressure contact belt 42 while being overlapped with the image receiving material 48 over substantially 2/3 of the circumference of the heating drum 40. It has become. When the photosensitive material 16 is heated during this nip conveyance, it releases a movable dye, and at the same time, this dye is transferred to the dye fixing layer of the image receiving material 48 to obtain an image.

In this case, since the endless pressure contact belt 42 has conductivity, the heating drum 40 and the endless pressure contact belt 42 or the photosensitive material
16 or the generation of static electricity due to friction with the image receiving material 48 is prevented.

Heating drum downstream of the endless pressure welding belt 42 in the material supply direction
A bending guide roller 52 is arranged below the 40. The bending guide roller 52 has a shaft 54 connected to a drive source (not shown), and is rotated by this drive force.
The bending guide roller 52 is in pressure contact with the outer periphery of the heating drum 40, and nips and conveys the photosensitive material 16 or the image receiving material 48.

Heating drum downstream of the bending guide roller 52 in the material supply direction
A peeling claw 58 is rotatably supported by a shaft 60 at the lower part of the 40.

A waste photosensitive material storage box 98 is disposed below the heating drum 40, and the photosensitive material 16 separated by the peeling claw 58 is disposed.
Is being sent.

On the other hand, in the vicinity of the heating drum 40 above the peeling claw 58, the peeling roller 100 and the peeling claw 102 are arranged, and the photosensitive material 16
The image receiving material 48 which is separated and moves together with the heating drum 40 is peeled off from the outer periphery of the heating drum 40. Heating drum
The image receiving material 48 peeled from the outer periphery of 40 is accumulated on the tray 105.

 Next, the operation of this embodiment will be described.

The photosensitive material 16 pulled out from the photosensitive material magazine 14
When it is transferred to the exposure unit 20 after being cut at 18, the exposure device
22 operates to scan and expose the image of the first or second original document 24 or 86 onto the photosensitive material 16 located in the exposure section 20. The selection of the original will be described later.

The exposed photosensitive material 16 is conveyed by being reversed by a reversing roller 34, and after being coated with water as an image forming solvent by a water coating section 36, it is conveyed to a heat development transfer section 38.

On the other hand, the image receiving material 48 is also pulled out from the material receiving magazine 46, cut into a predetermined length by the cutter 50, and then the photosensitive material 16
And is sent to the heat development transfer section 38. in this case,
The conveyance of the image receiving material 48 is synchronized with the conveyance of the photosensitive material 16, and the photosensitive materials 16 are superposed.

In the heat development transfer section 38, the heating drum 40 and the endless pressure contact belt
The photosensitive material 16 and the image receiving material 48 are supplied to the space between 42, and are sandwiched and conveyed while being pressed against the outer periphery of the heating drum 40 while being superposed.

When the photosensitive material 16 is pressed in the heat development transfer section 38 (between the heating drum 40 and the endless pressure contact belt 42) with the image receiving material 48 superposed thereon, it releases a movable dye, and this dye is released. An image is obtained by transferring to the dye fixing layer of the image receiving material 48.

The photosensitive material 16 and the image receiving material 48 are nipped and conveyed, and the heating drum
When reaching the lower portion of 40, the peeling claw 58 engages with the tip of the photosensitive material 16 and peels the tip of the photosensitive material 16 from the outer periphery of the heating drum 40.

Bending guide roller bent downward by the moving roller 80
The photosensitive material 16 wound around the 52 is nipped and conveyed by the bending guide roller 52 and the moving roller 80, and a waste photosensitive material storage box.
Sent to 98.

On the other hand, the image receiving material 48 that is separated from the photosensitive material 16 and moves together with the heating drum 40 is sent to the peeling roller 100.

Further, here, it is peeled off from the outer periphery of the heating drum 40 by the peeling roller 100 and the peeling claw 102 and accumulated on the tray 104.

The selection of originals (first original 24, second original 86) will be described below.

The first original 24 is placed on the original table 26, and the first original 24
When the image recorded in (1) is copied in the above process, first, the fixed focus lens 88 moves along the optical axis L according to the set magnification (100% in this embodiment). Next, light source 2
After turning on 8, the first scanning unit 32 and the scanning mirror 6
2 and 2 start moving from left to right in Fig. 2. As a result, the image of the first original 24 is line-scanned and the optical axis
It reaches the V-mirror 62 via the mirror 30 along the optical path indicated by L1. At this time, the relative positions of the first scanning unit 32 and the V mirror 62 change, so that the total optical path lengths of the optical axes L1 and L are always matched. Therefore, the light rays reflected by the scanning mirror 62 are fixed focus lens 88, V mirror.
The light is reflected by the mirror 90 via 91 and reaches the exposure unit 20.

Next, a case of copying the second original 86 will be described. When copying the second original 86, the bracket 94 to which the V mirror 91 is attached is moved to the right end in FIG. 1 beyond the normal movement range. This allows the scanning mirror 91
B contacts the step portion 104, and the step portion 104 causes the scanning mirror 91B to rotate about the shaft 92 on the upper end portion side to be in a horizontal state. When the second original 86 is designated, the light source 80 is turned on and the second original 86 is inserted into the space between the transport roller 84 and the base plate 74. As a result, the second original 86 is moved by driving the conveying roller 84, and the light beam of the transmitted image is reflected by the lens 77 and the mirror 79. At this time, since the scanning mirror 91B is in the horizontal state, this light beam is aligned with the optical path on the downstream side of the scanning mirror 91B, is reflected by the mirror 90, and reaches the exposure unit 20.

In this way, the scanning mirror 91B can be guided to the exposure section 20 by the light beam of the transmitted image of the second document only by bringing the scanning mirror 91B into the horizontal state by moving the bracket 94 beyond the normal movement range. There is no need to apply a half mirror or the like. Therefore, it is possible to reduce the waste of the light amount.

In this embodiment, the bracket 94 to which the V mirror 91 is attached is moved beyond the normal moving range. However, as shown in FIG. 3, the second scanning unit 76 is placed on the platen 26 of the document table 26. The bracket 67, which is arranged on the left side in FIG. 1 and has the other V mirror 65 attached, goes beyond the normal movement range to
The scanning mirror 63 may be moved to the left side of the drawing to be in a horizontal state. In this case, if the fixed focus lens 88 is used as a zoom lens, this zoom lens can be changed to a normal magnification (25% to 200%).
%) And high magnification (400%).

〔The invention's effect〕

As described above, the copying apparatus according to the present invention has an excellent effect that there is no light amount loss, and the light rays from the two optical paths can be switched and guided to the photosensitive material for copying without requiring a special switching mechanism. Have.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a copying apparatus according to the present embodiment, FIG. 2 is an enlarged view showing an arrangement state of scanning mirrors when a first original is copied, and FIG. 3 shows another configuration of the present invention. FIG. 7 is an enlarged view of an exposed portion showing a modified example when used in a copying apparatus. 10 ... Copier, 16 ... Photosensitive material, 24 ... First manuscript, 32 ... First scanning unit (first scanning means), 62 ... Scanning mirror, 63 ... Scanning mirror, 65 ... ... V mirror, 70 ... extension part, 71 ... switching mirror, 76 ... second scanning unit (second scanning means) 84 ... conveying roller (second scanning means), 86 ... second original , 104 …… Stepped portion (evacuation means).

Claims (2)

(57) [Claims] 1. A pair of scanning mirrors, each of which is arranged so that the incident angle of the optical axis is 45 °, and in which the optical axis of the light beam reflected on one side is incident on the other side to invert the optical axis by 180 °, and fixed. First scanning means for moving an image recorded on the first original by moving it along with the arranged first original and guiding it to the scanning mirror, and a second original requiring high magnification are provided. Normally, the second scanning means, which is moved to scan the image recorded on the second document and has a scanning optical path including the optical axis of the light beam reflected by the other scanning mirror, and the pair of scanning mirrors. Moving means for moving the scanning mirror beyond a moving range and the other scanning mirror retracted from the scanning optical path by the second scanning means when the scanning mirror is moved by the moving means beyond the range. Evacuation means,
Copier having a. 2. A pair of scanning mirrors, which are arranged so that the incident angles of their optical axes are 45 °, and in which the optical axes of the light rays reflected on one side are incident on the other side to invert the optical axis by 180 °, and fixed. First scanning means for moving an image recorded on the first original by moving it along with the arranged first original and guiding it to the scanning mirror, and a second original requiring high magnification are provided. The scanning mirror is moved to scan the image recorded on the second document, and second scanning means having a scanning optical path including an optical axis of a light beam reflected by the other scanning mirror;
And a removing unit that extends and moves in a direction opposite to the other end from the one end in the moving range of the scanning unit by the scanning unit to remove from the scanning optical path by the second scanning unit.