JPS62262036A - Copy image forming device provided with high magnification projecting optical device - Google Patents

Abstract

PURPOSE:To obtain not only a copy of a usual original picture, but a copy image which is enlarged from a small-sized transmission original, by inserting a projecting optical system into a part of a mirror scanning optical system. CONSTITUTION:When a copying device is set to a projection mode, the first shutter 17 is closed, an optical path from an image exposing part 10 is cut off, and the device goes to a state that only image information from a projecting device 60 is made to reach an image forming position 37. When a housing 71 for covering a light source part of the projecting device 60 is raised, and a transmission original is positioned on a moving table 66, and the projecting device is operated by closing an opening part, a light beam from a light source 61 transmits through a heat ray absorbing filter 63, condensed by a condenser lens 64, receives a correction of a color filter 65 and goes into a diffusion box 70. Such a light beam goes to a uniform light beam which generates no uneven color nor uneven illumination in the box, and radiated to the transmission original on the moving table 66. The light beam which is transmitted through the transmission original goes to a luminous flux containing image information of the original, passes through a lens 67 and brought to an image inversion by a mirror 68, made incident on the surface of a sensitized material, brought to an image formation, and a latent image is formed.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a process in which a photosensitive material is directly exposed to light using an optical means using a scanning method for an original image having image information such as characters, figures, pictures, etc., and then developed. The present invention relates to a copying apparatus that forms a duplicate image corresponding to an original image, and further relates to a copying image forming apparatus that is also equipped with a projection device that enlarges and projects a small transparent original to form a duplicate image.

[Conventional technology]

In general, copying image forming apparatuses that directly expose image information onto a silver halide photographic light-sensitive material use a full-surface simultaneous exposure method that simultaneously exposes the image information of the original image all at once, or a light source that exposes the image information of the original image at a constant speed. A scanning exposure method is used in which the image is moved and exposed sequentially.

Although the above-mentioned full-surface simultaneous exposure method has the advantage that the structure itself is simple and only one exposure is required, the optical system itself must occupy a large space, and the
Due to the large size of the entire unit and the need for a large space for installation, and the need for a light source that can illuminate a wide area with a uniform amount of light in order to obtain clear images3, scanning Exposure methods are often used.

In a copying image forming apparatus using a scanning exposure method, an original image is directly exposed to a silver halide photographic light-sensitive material that moves in synchronization with the scanning movement of the optical means using an optical means based on a scanning method.
conduct.

Here, the original image includes image information such as characters, figures, pictures, etc.
For example, the image information may be a book, a printed matter, a positive film, etc., and the form of the image information does not matter whether it is a reflective original or a transparent original.

This original image is illuminated by a light source with a constant slit width while moving continuously at a constant scanning speed, and the incident light or reflected light from the original image is illuminated by optical means such as a reflecting mirror or lens. The silver halide photographic light-sensitive material is directly exposed through the photosensitive material.

The exposed silver halide photographic material is developed and a visible image is obtained.

However, in conventional copying image forming apparatuses that employ scanning exposure method 2, the magnification of the y-copying screen relative to the original image is limited to at most X% to x2, making it difficult to form high-magnification copy images from small originals. was technically difficult.

[Problem that the invention seeks to solve]

A copy image enlarged from a small transparent original, such as a color positive film? In order to obtain a copy image 2 of a predetermined size, a special enlarging device is commercially available, and it is necessary to use this device to obtain a copy image 2 of a predetermined size.

However, some of the specifications required for copying image forming apparatuses include:
For example, it is increasingly becoming possible to manually make enlarged images (copies) from small-sized transparent originals (color positive film, etc.).

The present invention was created in view of the above-mentioned viewpoints, and by inserting a projection optical system into a part of the conventional mirror scanning optical system, it is possible to not only copy an ordinary original image but also enlarge it from a small transparent original. The object of the present invention is to provide a copy image forming apparatus which also has the function of obtaining a copy image.

[Means for solving problems]

The above object is to provide a copying image forming apparatus that creates a copy image by scanning and exposing an original image by optical system means to form an image directly on the photosensitive surface of a photosensitive material, and then developing it. A mirror 2 is provided in the middle of the optical path leading to the photosensitive material surface, and a light image 3 is reflected by the mirror and formed on the photosensitive material surface by a high-magnification projection optical system separately provided in a part of the copying image forming apparatus. This is achieved by a copying image forming apparatus characterized by the following.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

Note that the present invention is not limited to the aspects of these Examples.

FIG. 1 is a block diagram of a copy image forming bag r equipped with a high-magnification projection device according to the present invention.

FIG. 2 is a perspective view of the projection device of the copy image forming apparatus of the present invention.

In the copying image forming apparatus of the present invention (hereinafter referred to as copying apparatus), an original image is scanned using an optical means using a scanning method, and a reversal silver halide photographic light-sensitive material is moved in synchronization with the scanning movement of the optical means. Perform direct exposure to light.

Here, the original image when using the projection device is a transparent original such as a slide projection film. Further, the original image used in normal scanning exposure copying is a sheet-like or book-like image containing image information such as characters, figures, pictures, etc.

In addition, in the reversal type photosensitive material used in the present invention, a positive image is formed on the photosensitive material through exposure and development processing! Silver halide photographic light-sensitive materials are used as light-sensitive materials to obtain high-quality copied images, especially color copied images. Such silver halide photographic materials include, for example, internal latent image type or other direct reversal type silver halide photographic materials, Reversal J! i2 (reverse development type)
A silver halide material such as Y-Tei 1 Seikou material is suitable. Further, the support (base) of the silver halide photographic light-sensitive material may be opaque paper or the like or a transparent film.

The main body of the copying apparatus includes an image exposure section 10, a paper feed section, and a photosensitive material conveyance section! It consists of a ff1S30, a developing processing section 40, a drying section, and a projection device mark.

The image exposure section 10 includes an original platen glass 11, a light source 2, and a first
It includes a mirror 13, a second mirror 14, a third mirror 15, a lens 16, a first shutter 17, and a second shutter 18. A first scanning unit comprising a light source 12 and a first mirror 13 moves parallel to the document table glass 1 to expose and scan the document. A second scanning unit consisting of a second mirror 14 and a third mirror tS is mounted on the movable table and
It moves in the same direction as the scanning unit and at half the moving speed of the first scanning unit. Further, the first scanning unit and the second scanning unit operate in synchronization with the speed at which the photosensitive material is conveyed between the photosensitive material conveying sections. The above exposure scanning is almost the same as that used in known electrophotographic copying machines, etc., but the image is reversed by using an odd number of mirrors.
A latent image corresponding to the original image is formed directly on the photosensitive surface of the photosensitive material.

The first shear 17 is closed during operation of the projection device 60, opened during normal scanning exposure copying, and blocks external light other than image information when the projection device @ mark is operated.

The second shear 18 opens synchronously with normal scanning exposure copying and/or operation of the projection device 160, and is otherwise closed to prevent external light fogging 3 from occurring on the photosensitive material.

Note that the mirror name interposed in the optical path is a component of the projection device described later. This mirror head is either a half mirror and fixedly installed in the optical path, or a front mirror that is movable so that it can be inserted into and retracted from the optical path, so that it can be used during normal scanning exposure copying. does not obstruct the optical path.

On the other hand, the silver halide photographic material is formed into a roll and is housed in a magazine 21 in a light-tight state. This magazine 21 is removably placed at a predetermined position I in the sheet feeding section of the copying machine. The leading end of the roll-shaped silver halide photographic light-sensitive material (hereinafter referred to as "roll-shaped light-sensitive material") R in the magazine 21 is fed into a conveyor.

Next, the conveyance conditions of the sheet-like photosensitive material S within the conveyance section I will be described in the following.

(2) The roll-shaped photosensitive material R inserted into the conveying section 30 is held by the conveying rollers 31, 32, 35, and 3G that are in pressure contact with each other and is sent upward to a predetermined length.
When the paper (long side of A3 size, long side of A3 size, etc.) is fed, it is cut by the cutting device 33 into sheets.

(2) This cut sheet-shaped silver halide photographic material (hereinafter referred to as sheet-shaped photosensitive material) S is transferred to the transport roller 32.
35 and 36, and is temporarily rolled up into the upper first accumulator 38A.

0 Next, the sheet-like photosensitive material S is transferred to a conveying roller 36.3.
5.32, is lowered, and is housed in the second accumulator 38B. During this conveyance process, while the sheet-like photosensitive material S is passing through the image forming position (focal glass surface) 37 of the image exposure section 10, the first scanning unit is moved to the original position on the document platen glass 11 in response to this. While the original image is exposed and scanned with a predetermined width, the second scanning unit is also moved in synchronization, and the scanning exposure light beam generated by these units passes through the lens 16 and forms a latent image on the sheet-like photosensitive material S at the imaging position 37. is formed.

■The sheet-like photosensitive material S, which has been exposed and scanned, housed in the second accumulator 38B is transported by the conveying roller 36,
32, and is once again wound up and stored in the first accumulator 38A.

(2) Continuing with the reverse rotation of the conveyance rollers 36 and 35, the sheet-like photosensitive material S begins to descend, the conveyance direction is deflected by the clockwise rotation of the claw member 39A, and the sheet-like photosensitive material S is sent to the development processing section 40 by the conveyance roller 39B.

The development processing section 10 includes (1) the first development@P! 141. Second
Each processing tank includes a developing tank 42, a bleach-fixing tank 43, a first stabilizing tank 44, and a second stabilizing tank 1I5, (2) a replenishment pump 16 and a circulation pump 47 located below each processing tank, and a heater inside. A replenishment circulation system consisting of a liquid temperature adjustment tank 48; (3) a supply and drainage tank group consisting of a developer replenishment tank 491, a bleach-fix replenishment tank 492, a stabilizer replenishment tank 493, and a drain tank 494 further below the system; These are housed in one frame 100.

The above development P! ! J41 and -12 are composed of a liquid tank containing the developer CD'lE and a removable transport unit immersed in the liquid tank, and a fog exposure means is provided on the side near the inlet of the sheet-like photosensitive material S. It is a provision.

The conveyors 22, 3, and 3 are composed of driving rollers, guide plates, etc., and a gear train for driving these rollers 3 is arranged outside the liquid tank, and all driving is performed externally.

Next, a bleach-fix tank 43, a first stabilizing tank 44, a second stabilizing tank 4
Similar to the developer tanks 41 and 42, the developer tank 5 is also composed of a liquid tank containing each processing liquid and a transport unit that is immersed in the liquid tank and is detachable. It is similar to

The development processing section 40 is composed of a drive system, a transport system, and a processing liquid replenishment circulation system. The sheet-like photosensitive material S sent from the paper feeding section 30 and the conveying section 30 is transferred to the developing tank 41, 42.
The photosensitive material S is subjected to color development and capri exposure to form a developed image B on the photosensitive surface of the photosensitive material S. After being bleached and white-fixed in the next bleach-fixing tank 43, it is transferred to the first stabilizing tank 44 and the second stabilizing tank 4.
In step 5, the photosensitive material S is stabilized with a water-washing substitute stabilizing liquid and subjected to these processes. The photosensitive material S is transported by a transport roller 51 and a transport wire 52 in the drying section, and is dried by a hot air dryer 53 on both upper and lower surfaces. The sheets are then discharged from the discharge roller 54 to a discharge tray 55 provided outside the machine.

The developer CD in the developer replenishment tank 491 and the bleach-fixer BF in the bleach-fixer replenishment tank IO2 each pass through the replenishment vibrator 2 to the replenishment pump 46 and circulation pump 47? The liquid passes through the liquid temperature adjustment tank 48 and is replenished to the developer tanks 41, 42 and the bleach-fix tank/13 in a constant amount m.

Further, the developer CD in the developer tanks 41 and 42 is sucked out from the developer tank 41 by the circulation pump 47, mixed with the newly supplied developer CD in the circulation pump 47, and then returned to the liquid temperature adjustment tank 48. The liquid is refluxed into the developing tank 42 through the process.

Similarly, the bleach-fix solution BI' in the bleach-fix tank 43 is also circulated through the circulation pump 17 and the liquid temperature adjustment tank 183, during which time it is mixed with a new replenishing solution and refluxed into the bleach-fix tank 43.

In this manner, the processing liquids CD and BF in the developing tanks 41 and 42 and the bleach-fixing tank 43 are agitated and distributed by the circulation described above, are homogenized, and are maintained at a constant temperature.

In addition, a portion of the increased amount of each processing liquid replenished from the replenishment tanks 491 and 492 and supplied to the developing tank 42 and bleach-fixing tank 43 through the above-mentioned circulation system is transferred to an overflow tube having an opening at a constant liquid level. 412 and 432 and is stored in a drainage tank 494.

Furthermore, a drainage nozzle 41 is installed in a part of the piping of the circulation system.
3, 433 are provided, and the processing layer 41, 42, 43
When each of the processing liquids C, D, and B[' in the paper storage chamber 10 is exhausted, the noklup can be opened and each processing liquid 3 can be discharged to the paper discharge tank 494 located below.

On the other hand, the stabilizing liquid SR in the stabilizing liquid replenishing tank 493 is directly fed into the second stabilizing tank 45 by the replenishing pump 16. A part of the increased stabilizer liquid S It passes through the overflow pipe 442 and is stored in the drain tank 494 . Further, a draining nokulup 443 is provided below the first stabilizing tank 4/1, and the exhausted stabilizing liquid SI can be discharged into the draining tank 494.

Photography device i! The GO is composed of a light source 61, a partition wall 62, a heat ray absorption filter 63, a condenser lens 64, a color filter 65, a moving table 66, a lens 67, a mirror 68, an opening/closing lever 69, and a diffusion box 70.

The light source 61 is a halogen lamp with a concave reflector, and the light from the light source 61 is reflected by the concave reflector and transmitted through a heat absorption filter 63 provided on the optical path.

The partition wall 62 is provided with an opening that preliminarily limits the direction of the light beam that illuminates the transparent original, and a heat ray absorption filter 63 is disposed in the opening. Therefore, infrared rays (heat rays) inside the partition wall 62 do not leak outside the partition wall 62.

The condenser lens 64 is connected to the heat ray absorption filter 63.
The luminous flux of only the visible light emitted by the projector i', J, and l is focused on a fixed location.

The color filter 65 is operable in the middle of the optical path and performs so-called filter correction of the luminous flux.

The light flux, which is now only NF visual light, is condensed by a condenser lens 611, passes through a color filter 65, and enters a diffusion box 70. The light beams diffused and mixed in the diffusion box 70 are uniformly illuminated onto the transparent original without causing color unevenness or illumination unevenness.

The moving table 66 has a document loading area made of a transparent member and operates in synchronization with the photosensitive material conveying speed between the photosensitive material conveying sections, and the moving speed is the reciprocal of the projected image magnification, where Kl is the photosensitive material conveying speed. becomes. For example, if the projected image magnification is n times that of the original image, the moving speed of the moving table 66 is l/n of the photosensitive material transport speed.

A positioning means (not shown) for placing a transparent original on the moving table 66 is provided to prevent the placed transparent original from shifting during operation.

In addition, the direction of movement of the table and 9
A slit that intersects at 0) is fixed, and the moving table 66 moves on the slint with the transparent original placed a thereon, so that the light beam that has passed through the transparent original passes through the slit and then reaches the light source. It exerts exactly the same effect on the surface of the photosensitive material as the scanning exposure light beam.

The lens 67 is an imaging lens, and the exposure light beam transmitted through the transparent original placed on the movable table mark. The light is focused and imaged at the above-mentioned imaging position @37 via the mirror 68.

The mirror 68 is an imaging lens 67'f: an optical path of the transmitted exposure light beam? The optical path of the exposure light flux of the image exposure section 1O is changed to coincide with the optical path of the exposure light beam of the image exposure section IO.

The mirror 68 is configured as a half mirror and is fixedly installed in the optical path, or is configured as a front mirror and is provided movably so that it can be inserted into and retracted from the optical path. Even if it is interposed in the optical path of the exposure light beam, it operates so as not to obstruct the optical path, or during normal copying, the mirror screen is retracted so that it does not interfere with the optical path of the light beam.

The opening/closing lever 69 is connected to the housing 71 that covers the light source section 3 of the projection device when the transparent original is placed on the moving table 66.
This is to create an opening by lifting it up.

Next, the operation of the copying machine equipped with the projection device according to the present invention will be described.

When the copying apparatus is set to the projection mode, the first shutter 17 is closed, the optical path from the image exposure section 10 is blocked, and only the image information from the projection apparatus 60 is allowed to reach the imaging position 37. becomes.

Operate the opening/closing lever 69 to lift the housing 71 that covers the light source section 2 of the projection device mark, and open the opening in order to am[i] the transparent original.

Position the transparent original on the moving table 66, operate the opening/closing lever 69, close the opening, and close the projection device 60.
Make the inside of the room light-tight.

When the projection device is operated in this state, the light from the light source 61 passes through the heat ray absorption filter 63, is condensed by the condenser lens 61I, and enters the diffusion box 70 while receiving correction B from the color filter 65 along the optical path. . The light becomes uniform within the box without causing color unevenness or illumination unevenness, and is irradiated onto the transparent original on the moving table 6.

The light transmitted through the transparent original placed on the moving table 66 becomes a light beam containing the image information of the original, passes through a lens 67, is inverted by a mirror 68, and enters the surface of the photosensitive material to form an image, forming a latent image. form.

Image information passing through a slit fixed to the projection device directly below the movable table 66 is synchronized with the photosensitive material conveying speed of the photosensitive material conveying section 30 as the table 66 moves. The scanning exposure light beam acts on the surface of the photosensitive material and forms an image to form a latent image.

The sheet-like photosensitive material S in the exposed area is subjected to development and fog exposure in developer tanks 41 and 42 after the exposure process as described above to form a developing image on the photosensitive surface, and then bleach-fixed in the next bleach-fix tank 43. After that, it is stabilized in stabilizing tanks 44 and 45 with a water-washing substitute stabilizing liquid. The sheet-like photosensitive material S is conveyed by a conveyance roller 51 and a conveyance wire 52 between the drying sections, has its upper and lower surfaces dried by a hot air dryer 53, and is discharged from the machine through a discharge roller.

〔Effect of the invention〕

As described above in detail, according to the copying image forming apparatus equipped with the projection device of the present invention, it is possible to copy a small transparent original at high magnification in the projection mode.

As described above, the copying image forming apparatus according to the present invention can produce a large number of copies by directly exposing a photosensitive material using an optical means using a scanning method to scan an original image having image information such as characters, figures, and pictures. In addition to getting.

This makes it possible to easily and quickly obtain high-magnification copies of small transparent originals, which conventionally required a dedicated enlarging device, even for a large number of copies.

[Brief explanation of drawings]

FIG. 1 shows y! equipped with a high magnification projection device according to the invention! FIG. 2 is a partial perspective view of a high-magnification projection device. 10... Image exposure section 11... Original table glass 12.61... Light source 13.14, 15.68... Mirror 16.67
...Lens 17.18 ...Shutter button 11. ．．・Paper feeding section addition...Photosensitive material transport section 40...Development processing section 50...
... Drying section 60 ... Projection device 62 ...
..... Partition wall 63 ..... Heat ray absorption filter 64 ..... Condenser lens 66 ..... Moving table

Claims (3)

[Claims] (1) In a copying image forming apparatus that scans and exposes an original image using an optical system to form an image directly on the photosensitive surface of a photosensitive material, and then develops the image to create a copy image, the image is exposed to light from the optical system. A mirror is provided in the middle of the optical path leading to the material surface, and an optical image from a high-magnification projection optical system separately provided in a part of the copying image forming apparatus is reflected by the mirror to form an image on the photosensitive material surface. A copying image forming apparatus characterized by: (2) The copying image forming apparatus according to claim 1, wherein the mirror is constituted by a half mirror and is fixedly installed in the middle of the optical path. (3) The copying image forming apparatus according to claim 1, wherein the mirror is a front mirror, and is movably provided in the middle of the optical path so as to be freely inserted and retracted.