JPH04188126A - Copying device and method thereof - Google Patents

Abstract

PURPOSE:To dispense with a lens system for high magnification and miniaturize a scanning unit exclusive for high magnification by arranging a zoom lens for changing magnification in a common light passage of a scanning light passage through a first scanning means and a scanning light passage through a second scanning means. CONSTITUTION:It is provided with a first scanning means 32 which has a scanning mirror 62, scans a first document 24, and exposes to sensitive material 16, and a second scanning means 76 to scan a second document 86 necessitating high magnification. A scanning light passage on the lower stream side against the scanning mirror 62 is set as the common light passage L for a scanning light passage L1 by the first scanning means 32 and a scanning light passage L2 by the second scanning means 76, and a zoom lens 88 for changing magnification is arranged in this common light passage L. Hereby, a lens exclusive for the second document necessitating high magnification is not needed, and a machine to copy the second document 86 can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus and a copying method for scanning and copying an image recorded on a document.

[Prior art]

In general, copying machines often copy originals at the same size, but in some cases about 25%
Copies may be made after being reduced or enlarged within the range of ~200%. For this reason, copying machines are equipped with zoom lenses.
This zoom lens changes the magnification by moving along the optical path when scanning the document. This results in
Copies can be made at a desired magnification relative to the original size.

Incidentally, in recent years, copying devices capable of copying originals with small image areas such as slide films have been developed (Japanese Patent Laid-Open No. 62-262036, Japanese Patent Laid-Open No. 2-1587).
(See Publication No. 27). When copying an image recorded on this slide film, it is necessary to copy at high magnification because the image is small.

This magnification is usually about 400%. For this reason,
For originals that require high magnification, such as slide films, a scanning unit dedicated to high-magnification originals is installed in a separate location from normal originals, and an independent magnification lens system is placed within this scanning unit. It forms an optical path through the system to the photosensitive material.

[Problem to be solved by the invention H3 However, in the conventional structure described above, a separate lens system is required in addition to the zoom lens, which increases the number of parts and leads to an increase in cost. In addition, since the space required to install this lens system is very important, the scanning unit dedicated to high-magnification documents must be large and protrude from the original device casing, creating the problem of expanding the installation space. be.

In consideration of the above facts, the present invention eliminates the need for a separate high-magnification lens system for copying high-magnification originals, and makes it possible to downsize a scanning unit dedicated to high-magnification by sharing a zoom lens. It is an object of the present invention to provide a copying apparatus and a copying method that can reduce the size of the apparatus itself.

[Means to solve the problem]

The invention described in claim (1) includes a first scanning means that is equipped with a scanning mirror and that fixes a first original and scans an image recorded on the first original to expose a photosensitive material; a second scanning means for moving a required second original and scanning an image recorded on the second original; the scanning optical path downstream of the scanning mirror is configured to scan the image recorded on the second original; A common optical path of the scanning optical path by the means and the scanning optical path by the second scanning means is shared, and a magnification changing zoom lens is disposed on this common optical path.

The invention according to claim (2) provides the copying apparatus according to claim (1), in which the scanning mirror is retracted from the common optical path when copying an image recorded on the second original. It is characterized by allowing

The invention according to claim (3) provides a first document comprising a scanning mirror for scanning an image recorded on a first document and a guide rail for guiding the scanning mirror to move along the first document.
a first scanning means for scanning an image recorded on a manuscript;
A zoom lens for changing magnification is disposed on the optical path reflected by the scanning mirror, and a second document is disposed on the extension of the optical path connecting the zoom lens and the scanning mirror, and is recorded on a second document that requires high magnification. a second scanning means for scanning a scanned image; and a second scanning means formed at one end of the guide rail to guide a scanned image of a second document scanned by the second scanning means to the zoom lens. and a retracting means for retracting the scanning mirror from the optical path.

The invention set forth in claim (4) is characterized in that, in the invention set forth in claim (3), the retracting means bends the guide rail so as to move the scanning mirror in parallel.

The invention set forth in claim (5) is characterized in that, in the invention set forth in claim (3), the retracting means rotates around one side of the scanning mirror to retract it from the optical path. .

[Effect]

According to the invention described in claim (1), the image of the first original is scanned by a scanning mirror and exposed onto a photosensitive material through a zoom lens. This zoom lens reduces or enlarges the image at a predetermined magnification and copies it onto a photosensitive material. Note that this predetermined magnification is usually about 25% to 200%.

Next, a second document that requires a high magnification, for example, a document with a small image area such as a slide film, needs to be enlarged and copied at a magnification larger than the predetermined magnification (for example, 400%). According to the invention described in claim (1), since the zoom lens is disposed in a common optical path of the scanning optical path by the first scanning means and the scanning optical path by the second scanning means,
A lens dedicated to the second document, which requires high magnification, is not required, and the number of parts can be reduced. Therefore, the mechanism for copying the second original can be made compact.

According to the invention described in claim (2), when copying the image recorded on the second original, the scanning mirror is retracted from the common optical path, so that the scanning optical path by the first scanning means is Furthermore, there is no need to make the scanning mirror a half mirror in order to guide the light rays from the scanning optical path by the second scanning means to the common optical path, and waste of light can be avoided.

According to the invention set forth in claim (3), the scanning mirror is moved linearly with respect to the first document along the guide rail, and the scanning mirror retracting means is provided at one end of the guide rail. It is set up. Therefore, when guiding the scanned image of the second document scanned by the second scanning means to the zoom lens, the scanning mirror may be retracted by the retracting means. Further, if a retracting means is provided at one end of the guide rail, for example at the scanning start position, the scanning mirror can always be retracted in the standby state, so no special operation is required.

According to the invention 1 described in claim (4), since the guide rail is bent so that the retracting means moves the scanning mirror in parallel in a direction substantially perpendicular to the scanning optical path, the scanning mirror is moved along the guide rail. The scanning mirror can be retracted by simply moving the mirror when it reaches this bend.

According to the invention described in claim (5), the scanning mirror is rotated around one side so that the mirror surface of the scanning mirror and the scanning optical path are parallel to each other when the scanning mirror comes to one end of the guide rail. Therefore, it is only necessary to attach an urging means such as a motor, a solenoid, or a spring to the center of rotation, and the structure of the retracting means is simplified.

〔Example〕

Figure 1 shows the photocopy! ! ! A schematic configuration diagram of l(l is shown.

A photosensitive material magazine 14 is disposed on the machine stand 12 of the copying apparatus IO, and a photosensitive material 16 is wound up into a roll and stored therein. The photosensitive material 16 has a photosensitive silver halide, a binder, a dye-donating substance, and a reducing agent on a support.

A cutter 18 is arranged near the photosensitive material magazine 14, and is adapted to cut the photosensitive material 16 pulled out from the photosensitive material magazine 14 into a predetermined length. The cut photosensitive material 16 is conveyed to an exposure section 20.

An exposure device 22 is provided directly above the exposure section 20.

A document table 26 is arranged above the exposure device 22 on which a first document 24 made of a transparent glass plate is placed.

The first document 24 is a sheet of paper whose size is designated as A4, 34, etc., which are commonly used. Below the document table 26, there is a first scanning unit 3, which includes a light source 28 and a mirror 30, which constitute a part of the first scanning means.
2 is disposed, and is configured to reciprocate from side to side in FIG. 1 along the document table 26 by driving a drive unit (not shown). Note that the standby position of the first scanning unit 32 is on the left side of FIG. It has become.

A light beam from a light source 28 is irradiated onto the image plane recorded on the first original 24, and the reflected image is transmitted through a mirror 30 to a scanning unit which together with the first scanning unit 32 constitutes a first scanning means. It is designed to reach the mirror 62,
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 has its mirror surface perpendicular to the document table 26. The scanning mirror 62 has a pair of vertical pins 64 attached to both ends thereof.
It is supported in a long hole 68 formed in a guide rail 66 via this pin 64. The elongated hole 68 is formed parallel to the document table 26, and therefore, the scanning mirror 62 is driven by a drive unit (not shown) to adjust the angle of the mirror surface to the document table 26.
6 while maintaining the angle perpendicular to the original platen 26.
It is designed to be moved along. Here, the movements of the first scanning unit 32 and the scanning mirror 62 are synchronized (the amount of movement of the first scanning unit 32:
The amount of movement of the scanning mirror 62 is 2:1), so that the scanning mirror 62 moves back and forth over different distances in the same amount of time. For this reason,
The optical axes of the light beams reflected by the scanning mirror 62 always follow the same locus, and the optical path lengths are always the same.

The optical path shown as this optical axis is the optical axis Ll and the optical axis L described later.
It becomes a common optical path with 2.

The left end of the elongated hole 68 of the guide rail 66 in FIG.
The bent portion 70 is gradually bent in the direction away from the portion 2, and constitutes a retracting means.

Therefore, when the scanning mirror 62 is moved to the left end in FIG. 1, it gradually moves in parallel in a direction away from the document table 26 and is retracted from the optical axis L2 (
(See imaginary line in Figure 1 and Figure 3). This position also means that the scanning mirror 62 is at the maximum magnification position of the zoom lens 88 (400°).
%) so that there is no interference. This position is the home position of the scanning mirror 62, and is the position at which it waits when copying starts.

A mirror 72 is disposed on the extension of the back side of the scanning mirror 62 along the optical axis. This mirror 72 constitutes a part of the second scanning means, and the mirror 72 constitutes a part of the second scanning means.
It has the role of aligning the light beam from the second scanning unit 76 installed on the base plate 74 on the left side of the figure with the optical axis and keeping the optical path length unchanged.

The second scanning unit 76 has a light source 80 and a mirror box 82 disposed within its casing 78 . The light beam emitted from this light source 80 is output from the lower part of the casing 78 to the mirror 72 via a mirror box 82. In addition, the casing 78 includes
A pair of conveyance rollers 84 are attached with a mirror box 82 in between. A space is formed between the transport roller 84 and the base plate 74 into which a second original 86 is inserted.

The second original 86 is a reversal film, that is, a positive film for slide projection, and is similar to the first original 24.
An extremely small image is recorded compared to the . When the second original 86 is placed on the base plate 74 and one side is inserted into the space, it is held between the conveying roller 84 and the base plate 74 and conveyed from left to right in FIG. During this transportation, the light beam output from the mirror box 82 is transmitted through the film surface, so that a scanned image reaches the mirror 72.

Here, when the scanning mirror 62 is at the home position, there is no obstacle between the optical axis L2 of the reflected light of the mirror 72 and the optical axis.

A zoom lens 88 for changing magnification is arranged on the optical axis. By moving along the optical axis, the zoom lens 88 scans two scanned images passing along the optical axis.
It is possible to reduce or enlarge the image from 5% to 400%. The maximum enlargement rate of the first manuscript is 200%.
, and the enlargement rate of the second original is 400%.

For example, the zoom lens 88 is moved to the right in FIG. 1 when zooming out to 50%, and to the left in FIG. 1 when zooming in to 200%. Here, 2
The position of the zoom lens when magnifying to 00% and the rightmost position of the scanning mirror 62 are the same position, but when magnifying to 200%
When enlarging the image, only half of the area of the first half of the document table 26 can be scanned, so the scanning mirror 62 does not reach the rightmost position, and the zoom lens 88 and scanning mirror 62 are structured so that they do not interfere with each other. There is.

The light beam output from the zoom lens 88, that is, the scanned image, is reflected by a mirror 90 and reaches the exposure section 20.

A reversing roller 34 is arranged on the side of the exposure section 20, and a water application section 36 is further arranged on the side of the reversing roller 34. Photosensitive material 1 with an image exposed in the exposure section 20
6 is reversed and conveyed by a reversing roller 34, and is coated with water as an image forming solvent by a water coating section 36.

A thermal development transfer section 38 is disposed on the side of the water coating section 36, into which the water-coated 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 an image receiving material 48 is wound up into a roll and stored therein. The widthwise dimension of the image-receiving material 48 is smaller than that of the photosensitive material 16, and a dye fixing material containing a mordant is coated on the image forming surface.

A cutter 50 is also arranged near this receiving material magazine 46, and the image receiving material 4 pulled out from the receiving material magazine 46 is cutter 50.
8 is cut into a length shorter than that of the photosensitive material 16. The cut image receiving material 48 is conveyed to the thermal development transfer section 38. In this case, the image receiving material 48
The conveyance of the photosensitive material 16 is synchronized with the conveyance of the photosensitive material 16, so that the photosensitive material 16 is superimposed with a predetermined length ahead.

The thermal development transfer section 38 is constituted by a heating drum 40 and an endless pressure belt 42 as a pressing means, and furthermore, a 10-gen lamp 44 is disposed inside the heating drum 40.

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

Furthermore, the endless pressure welding belt 42 is made of aromatic polyamide fiber (for example, Kevlar or Nomex: both du
It has a structure in which a heat-resistant material such as POnt (registered trademark) is coated with silicone rubber containing carbon, and has electrical conductivity.

The photosensitive material 16 on which the image has been exposed is held and conveyed between the heating drum 40 and the endless pressure belt 42 over approximately 2/3 of the circumference of the heating drum 40 while being overlapped with the image receiving material 48. It has become. When the photosensitive material 16 is heated during this nipping and conveyance, it releases a mobile 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 is electrically conductive, generation of static electricity due to friction between the heating drum 40 and the endless pressure contact belt 42 or the photosensitive material 16 or the image receiving material 48 is prevented.

A bending guide roller 52 is arranged below the heating drum 40 on the downstream side of the endless pressure belt 42 in the material supply direction.

The bending guide roller 52 has a shaft 54 connected to a driving source (not shown), and is rotated by the driving force. The bending guide roller 52 is in pressure contact with the outer periphery of the heating drum 40, and is configured to nip and convey the photosensitive material 16 or the image receiving material 48.

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

A waste photosensitive material storage box 98 is arranged below the heating drum 40, into which the photosensitive material 16 separated by the peeling claw 58 is fed.

On the other hand, a peeling roller 100 and a peeling pawl 102 are arranged above the peeling pawl 58 and near the heating drum 40, and peel the image receiving material 48, which is separated from the photosensitive material 16 and moves together with the heating drum 40, from the outer periphery of the heating drum 40. It looks like this. Image receiving material 4 peeled off from the outer periphery of heating drum 40
8 are stacked on a tray 104.

Next, the operation of this embodiment will be explained.

When the photosensitive material 16 pulled out from the photosensitive material magazine 14 is cut by the cutter 18 and then conveyed to the exposure section 20, the exposure device 22 is operated and the first or second original 24 or 86 is cut.
The image is scanned and exposed onto the photosensitive material 16 located in the exposure section 20. Note that the selection of the original will be described later.

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

On the other hand, the image receiving material 48 is also pulled out from the receiving material magazine 46 and cut into a predetermined length by the cutter 50, and then sent to the thermal development transfer section 38, overlapping with the photosensitive material 16. 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 superimposed.

In the thermal development transfer section 38, the photosensitive material 16 and the image receiving material 48 are supplied between the heating drum 40 and the endless pressure belt 42, and are sandwiched and conveyed while being pressed against the outer periphery of the heating drum 40 while being overlapped. Ru.

When the photosensitive material 16 is pressed with the image-receiving material 48 superimposed on it in the thermal development transfer B58 (between the heating drum 40 and the endless pressure belt 42), it releases a mobile dye, and this dye acts as an image-receiving material. An image is obtained by transfer to the dye fixing layer of material 48.

When the photosensitive material 16 and the image receiving material 48 are sandwiched and conveyed and reach the lower part of the heating drum 40, the peeling claw 58 engages with the tip of the photosensitive material 16, and the tip of the photosensitive material 16 is removed from the heating drum 4.
Peel it off from the outer periphery of 0.

The photosensitive material 16 is bent downward by the moving roller 80 and wrapped around the bending guide roller 52 .
and the moving rollers 80, and are transported to the waste photosensitive material storage box 98.

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

Further, here, the tray 10 is peeled off from the outer periphery of the heating drum 40 by the peeling roller 100 and the peeling claw 102.
4.

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

When placing the first original 24 on the original table 26 and copying the image recorded on the first original 24 in the above process, the zoom lens 88 first moves along the optical axis according to the set magnification. (set to 100% in this example). Next, after turning on the light source 28, the first scanning unit 32 and the scanning mirror 62 start moving from left to right in FIG. 2 in synchronization.

As a result, the image of the first original 24 is line-scanned,
It reaches the scanning mirror 62 via the mirror 3o along the optical path indicated by the optical axis L1. At this time, the first scanning unit 32
By changing the relative position between the scanning mirror 62 and the scanning mirror 62,
The optical axes reflected by the scanning mirror 62 are always aligned. Therefore, the light beam reflected by the scanning mirror 62 passes through the zoom lens 88, is reflected by the mirror 90, and reaches the exposure section 20.

Next, the case of copying the second original 86 will be described. When copying this second original 86, the scanning mirror 6
2 is a long hole 68 of the guide rail 66 as shown in FIG.
is located at the home position, which is the left end of the screen. Therefore, there is no obstacle between the optical axis L2 and the optical axis. When the second document 86 is designated, the zoom lens 88 is moved to the left in FIG. 3 along the optical axis and reaches the 400% position.

Here, the light source 80 is turned on and the second original 86 is inserted into the space between the conveying roller 84 and the base plate 74. As a result, the second original 8 is moved by the drive of the transport roller 84.
6 is moved, and the transmitted image is incident on the zoom lens 88 via the mirror 72, where it is magnified and pressed.

The output scanned image is reflected by mirror 90 and reaches exposure section 20 .

In this way, the zoom lens 88 is arranged along the optical axis, and can be used both for changing the magnification of the first original 24, which is a so-called normal original, and for enlarging the second original 86, which requires a high magnification. Therefore, the second scanning unit 76 does not require a lens system, and the number of parts can be reduced and the size can be reduced.

Further, since the scanning mirror 62 is retracted at the home position to a position where it does not interfere with the zoom lens 88, and the mirror 72 is arranged on an extension of the optical axis, there is no need to apply a half mirror or the like.

In addition, it is possible to avoid wasting the amount of light. Moreover, no special operation is required for this retraction, and the scanning mirror 62 can be retracted simply by moving along the elongated hole 68.

Note that in this embodiment, the optical axis of the exposure device 22 is
6, but as shown in FIG.
The present invention can also be applied to a copying apparatus 92 in which the scanning unit 76 is disposed on the side wall of the machine stand 12, and the zoom lens 88 is disposed on the optical axis parallel to the document table 26. That is, as shown in FIG. 4, a pair of mirrors 94 (so-called V mirrors) configured to reverse the optical path from the first scanning unit 32 are fixed to a bracket 96 so that their relative positions do not change. It has become. This bracket 96
When located toward the left end in FIG. 4 with a part of the center as the center, it can be evacuated from the optical axis by rotating it with a motor (not shown).

In addition, the scanned image from the t1 optical axis L2 can be guided along the optical axis.

〔Effect of the invention〕

As explained above, the copying method and copying apparatus according to the present invention do not require a separate lens system for high magnification, and the scanning unit dedicated to high magnification can be downsized, and the apparatus itself can be downsized. It has this excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of the copying apparatus according to the present embodiment, FIG. 2 is an enlarged view showing the arrangement of the scanning mirror when copying the first original, and FIG. 3 is an enlarged view showing the arrangement of the scanning mirror when copying the second original. FIG. 4 is an enlarged view of an exposed portion showing a modification in which the present invention is applied to a copying apparatus having another structure. IO... Copying device, 16... Photosensitive material, 22... Exposure device, 24... First original, 26... Original table, 32... First scanning unit (first scanning means), 6
2... Scanning mirror (first scanning means), 66... Guide rail (first scanning means), 68... Elongated hole (first scanning means, evacuation means), 70... Bend (evacuation means)
, 76... second scanning unit (second scanning means) 84.
...Conveyance roller (second scanning means), 86...Second document, 88...Zoom lens, L...Optical axis indicating a common optical path, Ll...Optical path by first scanning means Optical axis showing L2
...An optical axis indicating the optical path by the second scanning means.

Claims (5)

[Claims] (1) A first scanning means that is equipped with a scanning mirror and that fixes the first original and scans the image recorded on the first original to expose the photosensitive material, and a second original that requires high magnification. a second scanning device that moves to scan an image recorded on a second document, and a scanning optical path downstream of the scanning mirror is a scanning optical path of the first scanning device and a scanning optical path of the second scanning device. A copying apparatus characterized in that a scanning optical path by the scanning means is a common optical path, and a zoom lens for changing magnification is disposed on the common optical path. (2) A copying method in the copying apparatus according to claim (1), characterized in that, when copying an image recorded on the second document, the scanning mirror is retracted from the common optical path. (3) A scanning mirror that scans the image recorded on the first original and a guide rail that guides the scanning mirror to move along the first original to scan the image recorded on the first original. A first scanning means, a zoom lens for changing magnification disposed on the optical path reflected by the scanning mirror, and a zoom lens disposed on the extension of the optical path connecting the zoom lens and the scanning mirror, which requires high magnification. a second scanning means for scanning an image recorded on a second original; and a second scanning means for scanning an image recorded on a second original; and a second scanning means for scanning an image of the second original formed at one end of the guide rail and sending the scanned image of the second original to the zoom lens. a retracting means for retracting the scanning mirror from an optical path when guiding the scanning mirror. (4) Claim (4) characterized in that the retracting means bends a guide rail so as to move the scanning mirror in parallel.
3) The copying device according to item 3). (5) The copying apparatus according to claim 3, wherein the retracting means is retracted from the optical path by rotating around one side of the scanning mirror.