JPS60205555A - Electrophotographic apparatus - Google Patents

Abstract

PURPOSE:To enable both of the images of general documents, etc., and the images of a cathode ray tube to be copied by switching an original illumination lamp and the starting circuit of the cathod ray tube over to each other in linkage with displacement of a reflection mirror. CONSTITUTION:A photosensitive film 1 made of an org. photoconductor is fixed to a slide frame 3, and a processing table moves below the film 1 to electrostatically charge and expose the film 1. The image of the cathode ray tube 10 is changed in the direction with a reflection mirror 12 and projected through a projection lens 13 on the film 1 to form a latent image. When a mirror box 11 is slid to withdraw the mirror 12 from the light path, the starting circuit of the tube 10 is inactivated to actuate a switch 76 for turning on an original illuminating lamp, thus exposing the film 1 to the optical image of an orignal 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electronic method for creating an image of an image projected on a cathode ray tube screen or a general object image (two sheets, a real object, etc.) on an electrophotographic photoreceptor. Concerning photographic equipment.

Conventional configuration and its problems Conventionally, this type of device, which creates an image on a cathode ray tube (hereinafter referred to as CRT) on a photoreceptor, is a specialized device for CRT photography, and cannot be used for other general subjects. could not be imaged. In addition, even with this type of device for photographing general subjects, it is difficult to adjust the positional relationship of the device in order to create an image on a CRT, and it requires time and effort to install reflectors and light-shielding tubes. There were other problems.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and provides an electrophotographic apparatus that forms images of a CRT screen and other objects on an electrophotographic photoreceptor in a short time and with easy operation. The purpose is to

Structure of the Invention The electrophotographic apparatus of the present invention includes a mirror in an optical path for forming an image on a CRT screen on an electrophotographic photoreceptor, changes the optical path by rotating or sliding the mirror, and changes the optical path by rotating or sliding the mirror. By providing a switch that is linked to the sliding movement and switches the energization to the cathode ray tube operating circuit and lighting equipment for general subject photography,
The structure is such that the optical path and operating circuit can be easily switched between when photographing a CRT screen and when photographing a general subject.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure shows an example of a photoreceptor used in the present invention. Here, a photoreceptor 1 in the form of a single leaf is attached to a frame 2 made of paper or a suitable synthetic resin, and is hereinafter referred to as a slide film 3.

FIG. 2 is a sectional view of a main part of the slide film 3. As shown in FIG. The photoreceptor 1 has a conductive layer 6 formed by vapor-depositing palladium or the like on a base 4 made of polyethylene terephthalate or the like, and a photoconductive layer 6 formed by coating a photoconductive material such as poly-N-vinylcarbazole thereon. It is. The conductive layer 6 is exposed at the grounding window 7 formed in the frame 2, so that it can be grounded from the outside.

FIG. 3 is an external view of an embodiment based on the present invention, FIG.
FIG. 6a shows a schematic configuration of the main parts of the device. In FIG. 4 and FIG. 5a, the lowest one of the unused slide films 3 is fed out from the magazine 8 to the film fixing position by the film feed plate 9, and the CR
The light image on T1o is reflected by a mirror 12 in a mirror box 11, passes through a lens 13, and forms an image on the photoreceptor 1 of the slide film 3. Furthermore, by sliding the mirror box 11 to the right to the position shown by the dotted line in FIG. 5a, the image of the subject 14 on the table is
An image can be formed on the photoreceptor 1. In addition, a switch 76 that operates in conjunction with the sliding of this mirror box is C.
The power to RT is turned off, and at the same time, power is turned on to the lighting device for photographing a general subject. Below the slide film 3,
A processing table 16 equipped with an electrophotographic processing device is provided opposite thereto, and a charger 16 . Exposure window 17, developing device 18. It is equipped with a dryer 19, etc., and a processing table 1.
6 is configured to be guided by a guide shaft 20 and reciprocated linearly in the horizontal direction.

FIG. 5 is a perspective view of the mirror box 11. A mirror 12 is fixed inside the mirror box 11. The rails 46 are connected to the lower frame 48 shown in FIG.
The mirror box 11 is fixed to the rail 46.
slide along. Bent parts 4 are provided at both ends of the rail 460.
7A and 47B, which are designed to regulate the position of the mirror box 11 at each time of photographing, and the bending part 4A is
The position of the bent portion 47B when photographing on a CRT corresponds to the position when photographing a general subject. Also, when shooting with a CRT,
The mirror box 11 covers the entire optical path and has a structure that is not affected by external light.

FIG. 5C shows an embodiment in which the optical path is switched between CRT photography and general subject photography using a rotating mirror 12, and 90 is a light path provided in the mirror box 11 for use in general subject photography. It's a hole. Further, 76 is a switch for switching the supply of electricity to the CRT operating circuit and the lighting device for photographing general subjects.

Note that, as shown in FIG. 6a, if this device is installed at the edge of a desk or the like, it is possible to photograph the subject 14 on the floor. Therefore, the structure is such that no part of the device blocks the optical path.

The outline will be explained below. As described above, when the slide film 3 is fed into the film fixing position 21, the processing table 16 begins to move toward the right in FIG. At the same time, a high voltage of about 4 (KV) is applied to the tungsten wire 22 of the charger 16, causing corona discharge and charging the photoreceptor 1. When the exposure window 17 formed in the processing table 16 reaches directly below the slide film 3, the processing table 16 stops moving and the shutter 23 opens. At this time, a light image on the CRT 10 or another object 14 is formed on the photoreceptor 1. When an electrostatic latent image corresponding to the light image is formed on the photoreceptor 1 by exposure for a required time, the shutter 23 closes and the processing table 16 starts moving to the right again. Next, when the developing device 18 containing the developer reaches below the slide film 3 held at the film fixing position 21, the developer rises and comes into contact with the photoreceptor 1 to form the electrostatic latent image. is visualized. When the processing table 16 further moves to the right, the mound 9 of the developer stops, hot air is blown out from the dryer 19, and the slide film 3 is wetted with the developer.
Dry. When the processing table 16 reaches the right end, it begins to return to the left. At this time, the film ejection lever 24 rises, the slide film 3 at the film fixing position 21 is ejected out of the apparatus along with the movement of the processing table 15, and when the processing table 16 returns to its initial position,
The movement is stopped and the entire processing step is completed.

Next, the configuration of this device will be explained in more detail with reference to the drawings from FIG. 6 onwards.

FIG. 6 is a plan view of the processing table 16, and FIG.
This is a sectional view taken along the line 25-25' in FIG. 6, showing the state when the developing device is in operation.

A developing roller 27 is rotatably attached to the developing tank 26 via a bearing 28. One end of the developing roller 27, which is supported by the bearing, protrudes to the outside of the developing tank 26, and a gear 29 is fixed to the tip. It is.

Further, the developer tank 26 is provided with a developer heaping member 31 rotatably attached to the support shaft 30 as a fulcrum. The developer heaping member 31 is lightly pressed against the developing roller 27 by a return spring 32, and the developing roller 27 and the edge portion 33 of the developer heaping member 31 are in contact with each other.

When the developing roller 27 is rotated at, for example, 900 rpm by the motor 34 shown in FIG. 6, the developer 36 is lifted to the upper part of the developing roller 27 along the outer periphery of the developing roller 27. Here, the developer 35 is applied to the developer heaping member 3.
The developer 35 that comes out onto the upper surface of the developer heaping member 31 through the slit 36 provided next to the edge 33 of the slide film 3 comes into contact with the photosensitive surface of the slide film 3 and performs development processing. . Note that the developing roller 27 and the developer heaping member 31 are both made of an insulating synthetic resin such as polyacetal. Next to the slit 36 of the developer heaping member 31, there is a plate having a thickness of 0.2fi and a width of 411 mm.
1+++, a conductive electrode plate 37 with a length of 2611III+
must be mounted electrically isolated from the rest of the equipment.

FIG. 8 shows a perspective view of the developer heaping member 31.
Since the developing electrode plate 37 faces the surface of the photoreceptor 1 of the slide film 3 and has a certain area, the developer 36 rising from the slit 36 is transferred to the developing electrode plate 37.
The developing electrode plate 37 effectively functions as a developing electrode.

However, since this is a thin plate with a thickness of about 0.2+m, its volume as an electrode plate is small.

One end of a thin metal wire 38 having a wire diameter of about 0.1+III+ is soldered to a part of the developing electrode plate 37, and the other end of the thin metal wire 38 is connected to a fixed terminal of a contact of a reed relay 39, which will be described later. ing. Furthermore, the reed relay 3
A capacitor 40 of about 1 μF is connected between the movable contact 9 and the earth, and therefore, when the contact of the reed relay 39 is closed, the developing electrode plate 37, the thin metal wire 38, the fixed terminal of the contact of the reed relay 39, etc. Required minimum plate thickness and wire diameter t Minimizing the volume of the conductive portion connected to the development electrode plate 37 as described above and opening and closing the contacts of the reed relay 39 are important for the CRT screen. This is to obtain a uniform image with high density and no edge effect when there is a lot of black in the background, such as in the case of a general document, and to obtain a clear image without capri in the background when there is a lot of white in the background, such as in a general manuscript. It is a useless item and plays an important role in this device.

In addition, the reason why reed relays are used here is that the mass of the conductor part of the contacts is very small, and the insulation resistance between the contacts is guaranteed to be 1012Ω or more, which is higher than that of a normal switch due to its structure. This is because there is. The insulation resistance between the developing electrode plate 37 and the machine body must be 1 dΩ or more, and 109 Ω.
Below this level, significant capri will occur in the background of the image, making it impossible to obtain a clear image.

9 is a top view showing the relationship between the film ejection lever 24 and the leaf spring 41, and FIG. 10 is a side view taken from line 46-46' in FIG. 9, showing the operating state of the film ejection lever 24. The positional relationship of the slide film 3 is shown.

As shown in FIG. 6, FIG. 9, and FIG.
2, and is normally located at the position shown by the solid line in FIG. In FIG. 6, when the processing table 16 moves to the right and comes close to the right end, the 9th
As shown in FIG. 10, the film fixing position 21
One end 43 of the film ejection lever 24 comes into contact with the plate spring 41 fixed to the plate spring 41, and the plate spring 41 is pushed in the direction of the arrow to be in the state shown by the dotted line. When the processing table 16 moves further to the right, the film ejection lever 24 rides over the leaf spring 41, and the leaf spring 41 returns to its original state as indicated by the solid line. When the processing table 16 reaches the right end and starts moving to the left until the film ejection lever (-124Q) comes to a point where one end 43 comes into contact with the leaf spring 41, the film ejection lever 24 is rotated by the leaf spring 41. When the processing table 16 moves further to the left in this state, the tip 44 of the film ejection lever 24 comes into contact with the slide film 3 and moves it along with the movement of the processing table 15. , the film is ejected from the film fixing position 21 to the outside of the apparatus. Note that when the processing table 16 finishes moving and returns to the leftmost position, one end 43 of the film ejection lever is disengaged from the leaf spring 41, so that the film ejection lever 24 returns to the position shown by the solid line in FIG. 10, and all processing steps are completed.

FIG. 11 is a wiring diagram of the present device, and the operation of the present device will be explained below based on this.

When the slide film 3 is fed into the film fixing position 21, a switch 61 that detects this is operated and closed. At the same time, the solenoid 52 that pulls the shutter 23 is energized and the shutter 23 is closed. Next, when the start switch 63 is pressed, the relays 64 and 66 are energized, the contact 66 of the relay 64 is closed, and the relay 64 is self-held. At the same time, contact 67 of relay 54 is also activated, energizing motor control circuit 59, and motor 60 starts rotating. The motor 60 is a motor that drives the processing table 15, and its rotational speed is controlled by a motor control circuit 59. The contacts 61 and 62 of the relay 65 are energized by pressing the start switch 63 mentioned above, and the relay 55 is energized.
The contacts 61, 62 of the relay 65 are switched from the illustrated position, and the motor 6o rotates forward. Contact 61 of relay 66
．． If 62 is in the illustrated state, it will rotate in the opposite direction. At the same time as the start switch 53 is pressed, the relay 6
Since the contact 66 of No. 4 is also closed, the high voltage generator 64 is energized through the closed switch 63, and a voltage of about 4 KV is generated. Therefore, the charger 16 on the processing table 16 generates corona discharge and, while moving,
The photoreceptor 1 of the slide film 3 is charged. When the processing table 16 begins to move, the switch 67 is switched to the NC side. When the processing table 16 reaches the exposure position, the switch 63 is opened and charging ends. At the same time, the switch 66 was activated and switched to the No side, and the relay 64 was activated and closed. The timer 66 is energized through the contacts 68 of the relay 64, and the activation of the same switch 66 causes
When the motor 16 stops and the processing table 16 stops, the power to the solenoid 62 is also cut off and the shutter 23 opens, so that the slide film 3 is exposed to light passing through the exposure window 17. The timer 66 is energized,
After a predetermined period of time has elapsed, the contact 68 of the timer 66 is closed, the solenoid 62 is energized again through the contact 68, the shutter 23 is closed, and the exposure is completed. At the same time, the motor 6o is also energized through the contact 68, so the processing table 16 resumes movement.

Next, when the processing table 16 comes to the developing position, the switch 69 is closed, the developing motor 34 rotates, and the developing device 18
is activated to perform development processing.

Next, when the development is completed and the processing table 16 comes to the drying position, the switch 70 is closed and the drying fan motor 71 is energized and starts rotating. When the processing table 16 further moves, the switch 72 is closed, the heater 73 is energized, hot air is blown out from the dryer 19, and the slide film 3 is dried.

When the processing table 16 reaches the right end, the switch 74 is opened, the relay 54.66 is de-energized, and the contacts 56, 57.58, 61.62 also return to the positions shown. The motor 6o continues to be energized via the switch 67, and the contacts 61 and 62 of the relay 56 have returned to the positions shown, so the motor 6o is reversed and the processing table 16 is , it begins to return to the left in Figure 4.

When the predetermined position is reached, the switch 72 is opened and the power to the heater 73 is cut off, and then the switch 7° is opened and the power to the fan motor 71 is also cut off, thus completing the drying. Furthermore, when the processing table moves to the left, the slide film 3 that was at the film fixing position 21 is ejected to the outside by the film ejection lever 24, the film detection switch 61 is opened, and the solenoid 52 is energized. is cut off and the shutter 23 opens.

When the processing table 16 returns to the first left end stop position, the switch 67 is switched to the No side, power to the motor 60 is cut off, the processing table 15 is stopped, and all the circuits shown in the diagram are Return to the initial state and complete all processing steps.

The switch 76 is linked to the sliding movement of the mirror box 11, and when the mirror box is in the CRT shooting position,
Electrify CRTlo. Also, when the mirror box 11 is in the general subject shooting position, the switch 76 is set to LAMP.
Leads to the side. When the contact 76 linked to the timer 66 is closed, the contact 78 of the relay L is also closed, and the illumination lamp 80 is closed.
is energized, and the illumination lamp 8o lights up.

The switch 77 is set to the ON position when adjusting the focus when photographing a general subject, and is normally set to the AUTO position.

Effects of the Invention As described above, the present invention includes a lens disposed to form an image of a general subject on a CRT or an electrophotographic photoreceptor, and the electrophotographic photoreceptor disposed opposite to this lens in a predetermined manner. It has means for holding the photoreceptor in position, and a processing table that moves reciprocally with respect to the photoreceptor holding means and has charging and developing means on its upper surface. As if forming an image on top of C.
A rotatable or sliding mirror arranged to switch the optical path that guides the image on the RT and the image of a general subject to the lens, a CRT operating circuit linked to the rotation or sliding of this mirror, and a general subject photographing By providing a switch to switch the energization to the lighting device for general photography, there is no need to provide a separate switch to switch the energization to the CRT operating circuit and the lighting device for general subject photography, and the position of the optical path switching mirror can be easily changed. The circuit can be switched by a switch linked to the camera, making it easy to photograph not only images on a CRT but also general subjects, and eliminating the need for troublesome work such as adjusting reflectors and installing light-shielding tubes. The effect of this method is extremely large, as it can be achieved with a simpler configuration.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an example of a slide film used in the present invention, FIG. 2 is a cross-sectional view of a main part thereof, FIG. 3 is an external view of an electrophotographic apparatus according to an embodiment of the present invention, and FIG. 4 is the same. FIG. 6A is a longitudinal cross-sectional view of the main part of the device, FIG. 6A is a partially cutaway side view of the device, FIGS. 86 is a plan view of the processing table section, FIG. 7 is a sectional view taken along the line 25-25' in FIG. 6, FIG. 8 is a perspective view of the developer heaping member of the device, and FIG. A plan view of the discharge section, Figure 10 is 4 in Figure 9.
FIG. 11 is an electrical wiring diagram of the device, which is a main part configuration diagram seen from the line 5-45'. 1...Photoconductor, 3...Slide film, 8...Magazine, 10...CRT
lll...mirror box, 12...
Mirror, 13... Lens, 16... Processing table, 16... Charger, 18...
・Developing motor, 76...switch. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 4 Figure 5 (C) CD-ON Figure 6

Claims (1)

[Claims] A cathode ray tube for projecting an image of an input video signal, a lens disposed to form an image of the cathode ray tube or a general subject onto an electrophotographic photoreceptor, and a cathode ray tube disposed opposite to the lens. It has a photoreceptor holding means for holding the electrophotographic photoreceptor in a predetermined position, and a processing table that reciprocates with respect to the photoreceptor holding means and has charging and developing means arranged on its upper surface. a rotatable or slidable mirror arranged to form an image on the electrophotographic photoreceptor by reciprocating movement of the processing table, and to switch an optical path that guides the image of the cathode ray tube and the image of a general subject to a lens; , an electrophotographic apparatus comprising a switch that switches energization to a cathode ray tube operating circuit and a lighting device for photographing general subjects in conjunction with the rotation or sliding of the mirror.