JPH057694B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an information recording device for recording image information on an information recording medium such as a microfilm.

(Problems to be Solved by the Prior Art and the Invention) In the case of a microfilm in which frame images are continuously photographed with a small gap, such as a roll-shaped or fixed-shaped microfilm, the enlarged projected image is a screen image. If they do not match the frame or the print image frame, adjacent unnecessary frames other than the target frame will also enter the projected image area at the same time. This is fine if it is only projected on a screen, but if it is printed, especially if the printed information is to be provided to others, it becomes necessary to cut out unnecessary parts.

In such cases, the conventional method is to replace the lens with a lens with a magnification that can enlarge the image to the limit of the print image frame to prevent other unnecessary parts from appearing in the print image, or to place a light-shielding material on top of the microfilm and print. It was necessary to perform troublesome operations to prevent it from appearing on the image.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide an information recording device that can record an image in a predetermined area of a recording medium without performing troublesome operations. It is in.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an information recording apparatus that records image information of an information recording medium by exposing the image information on the image recording medium. a detecting means for detecting a recording area; a specifying means for specifying an image arrangement pattern of an information recording medium and an area to be recorded; and a control means for regulating the exposure area of the image recording medium.

(Example) The present invention will be explained below based on the illustrated example.

1 and 2 show a microfilm reader printer as an embodiment of the information recording apparatus according to the present invention. In FIG. 1, F is a rolled microfilm as an information recording medium, 1 is a projection lamp, 2 is a reflecting mirror, 3 is a condenser lens, 4 is a projection lens, 5, 6, 7, 8 are reflecting mirrors, and 9 is a It is a projection screen. Also,
10 and 11 are scanning mirrors arranged at 90 degrees to each other; 12 is a photosensitive drum as an image recording medium; 13 is arranged above the photosensitive drum 12 and has a slit 14 along its axial direction. A shutter base 15 is a CCD array fixed longitudinally on the shutter base 13; 16, 16 is movably disposed on the shutter base 13 in the longitudinal direction; a first shutter plate 18 for adjusting the shutter base 13;
This is a second shutter plate that is disposed above the slit 14 so as to be movable in the width direction, and opens and closes the entire slit 14.
The scanning mirrors 10 and 11 are movable in the direction of arrow W or R, and are normally retracted to a position away from the projection optical path A in the direction of arrow W. During printing, they are moved in the R direction and placed within the optical path A. It then moves in the W direction and scans and exposes the projected image of the film F onto the photosensitive drum 12 through the slit 14 through the optical path B. At this time, the shutter base 13 also moves in synchronization with the scanning mirrors 10 and 11.

FIG. 2 is a layout diagram showing a microfilm search section. In the figure, 20 is a supply reel;
Reference numerals 1 and 22 designate guide rollers, 23 and 24 glass plates arranged opposite to each other across the film movement path, 25 a capstan roller, 26 a pinch roller, 27 a take-up reel, and 28 a mark detector. The supply reel 20 and the take-up reel 27 are connected to a film tensioning and winding motor (not shown), and the capstan roller 25 is connected to a film driving motor (not shown).
is connected to.

The microfilm F is stretched between the supply reel 20 and the take-up reel 27, and the capstan roller 2
5, it is wound onto the take-up reel 27 or rewound onto the supply reel 20.

Figure 3 shows the arrangement pattern of microfilm frames, and the frame image 3 that is projected on the screen when microfilm F is projected.
1 shows an example of the arrangement state of No. 1.

FIG. 4 is a block diagram showing the control circuit. 3
Reference numeral 2 represents a mode changeover switch, and 33 represents a mode selection circuit, which constitute designation means A of the present invention. The mode changeover switch 32 is the pattern changeover switch 34.
and a frame position selection switch 35.
36 is an image frame detection circuit connected to the CCD array 15 constituting the detection means C for detecting an image recording area, 37 is an I/O port, and 38 is a CPU.
39 is a width direction light shielding plate drive circuit, 50 is a light shielding plate driving means, 51 is a scanning direction light shielding plate driving circuit, 52 is a light shielding plate driving means, 53 is a mirror position detection sensor,
54 is a mirror position detection circuit, which together with the CPU 38 constitutes the control means B of the present invention. The image frame detection circuit 36, as shown in FIG.
Memory circuit 41 for storing signals from array 15
, an arithmetic circuit 42 that reads out the memory contents stored in the memory circuit 41 and analyzes the density pattern of the contents, and an image frame position determining circuit 43 that determines an image area based on the arithmetic results of the arithmetic circuit 42. It is made up of

In the above configuration, the information recording apparatus according to this embodiment records image information as follows.

That is, when printing the projected image after reading the projected image on the screen 9, when a print button (not shown) is pressed, the scanning mirror 10,
11 moves in the direction of arrow R from the retracted position and is located at a predetermined start position. scanning mirror 1
While 0 and 11 move to the starting position,
The area within the frame 30 shown in FIG.
1 and stored. When the movement to the start position is completed, that is, the CCD array 15
When the entire surface of the projected screen is scanned, this memory information is sent to the arithmetic circuit 42.

The arithmetic circuit 42 divides the memory information into a large number of narrow areas perpendicular to the scanning direction, sets the signal of the bright part in the area to 0, and the signal of the dark part to 1, and adds these values for each row. Areas where the result of this addition is 0 are bright areas that require frame erasure. Also, the point where the addition result changes from zero to positive is one end of the image scanning direction, and the point where the addition result changes from positive to zero is the other end of the image scanning direction. Coordinates a and b of the front end and rear end in the x direction are obtained.

Similarly, the memory information is divided into many narrow areas parallel to the scanning direction, the signal of the bright part in the area is set as 0, the signal of the dark part is set as 1, and these values are added for each row. The coordinates c and d of the image edges in the direction perpendicular to the scanning direction (y direction) can be obtained.

As shown in FIG. 3, even when there are a plurality of frame images 31 in the projection area of the microfilm F, the image recording area is detected in the same manner as described above.

Of the images of the microfilm F enlarged and projected onto the screen 9, the frame image 31 to be printed is designated by the mode changeover switch 32 on the operation panel. That is, since the microfilm F has a plurality of patterns P ₁ , P ₂ , P ₃ , and P ₄ as shown in FIG. Select the position of the next frame to print (top, bottom, left, right, center, etc.)
is designated by the frame position selection switch 35.
For example, if the arrangement of the frames projected on the screen 9 belongs to the _P2 pattern shown in Fig. 3,
Select the mode for that pattern using the pattern changeover switch 34, and then, if the frame on the right is the desired frame, select the frame position selection switch 35.
Specify it by. These signals are sent to mode selection circuit 33. This mode selection circuit 3
3 sends a mode selection signal indicating which area to print according to the specified frame arrangement pattern to the image frame detection circuit 36. The image frame detection circuit 36 is
Among the image recording areas detected as described above, a signal of the image recording area corresponding to the frame image 31 to be printed is output to the CPU 38 via the I/O port 37. Here, if the frame arrangement state detected by the image frame detection circuit 36 and the frame arrangement state specified by the mode selection circuit 33 are different, the printing operation is stopped and the frame arrangement state specified by the mode selection circuit 33 is different. display the projected image to a person or print the projected image in the same way as a normal print. The CPU 38 uses a signal from the image frame detection circuit 36 to drive the light shielding plate driving means 50, 5, which includes a motor or the like, through the width direction light shielding plate driving circuit 39 and the scanning direction light shielding plate driving circuit 51.
2, the first shutter 16 is moved to a predetermined position, and the second shutter 18 is moved at a predetermined timing.
is opened, and a predetermined image area designated by the mode changeover switch 32 is exposed onto the photosensitive drum 12.

The photosensitive drum 12 is made of a known electrophotographic photosensitive member, and a known charging device, developing device, transfer device, and cleaning device are respectively disposed around the photosensitive drum. Each process is performed in sequence. That is, the photosensitive drum 12 is uniformly charged by a charging device, exposed to an image on the microfilm at an exposure position, and then developed with toner from a developing device having the same polarity as the electrostatic latent image. The toner image is transferred to a transfer paper by the transfer paper, and the remaining toner is removed by a cleaning device, and the paper is used repeatedly thereafter. The transfer paper on which the toner image has been transferred is fixed by a known fixing device and then discharged onto a receiving tray.

The image on the microfilm F is exposed onto the photosensitive drum 12 using a slit exposure method. During copying, the photosensitive drum 12 rotates at a constant speed in the direction of the arrow, and the scanning mirror 1 is rotated in synchronization with the rotation of the photosensitive drum 12.
0 and 11 move in the direction of arrow W, thereby scanning and exposing the image on the microfilm onto the photosensitive drum.

As described above, only the image area of the specified frame image 31 on the microfilm F is exposed on the photosensitive drum 12, so even if there are multiple frames in the projection area of the microfilm F, only the specified frame image 31 will be exposed. Moreover, prints without black borders can be obtained.

In the above embodiment, the case where the image area is detected by the CCD array 15 and the image frame detection circuit 36 has been described. However, if the size of the frames is constant and only the arrangement pattern is different, the image area matching the arrangement pattern is determined in advance. It may be stored in the CPU 38 or the like, and the shutter may be moved to a predetermined position in accordance with the mode specified by the operator.
In such a case, the CCD array 15 and the image frame detection circuit 36 are not required, and the apparatus can be simplified.

Furthermore, in the illustrated embodiment, the microfilm arrangement patterns are set to four types, _P1 to _P4 , but the present invention is not limited to this, and it is of course possible to set modes for other patterns suitable for practical use. be.

In addition, in the above embodiment, a case was described in which an image on a microfilm is exposed to a photosensitive drum and printed. However, instead of the photosensitive drum, an image sensor such as a CCD array 15 is used to read the image information and print it on an optical disk or the like. It may also be recorded. In this case, at the exposure position of the photosensitive drum,
When an imaging device such as a CCD array is placed and the scanning mirror moves to the start position, the slit is fully opened to capture information about the image area.
The first and second shutters may be moved based on the detected image area to read image information using the same image sensor. In this case, there is no need to provide a separate CCD array on the shutter base.

Further, in the illustrated embodiment, a case has been described in which the CCD array 15 is arranged on the shutter base 13, but the CCD array 15 is not limited to this, and may be arranged anywhere within the scanning optical system.
As long as the array itself is scanned, it may be placed anywhere in the projection optical system. In this case, the CCD array can be made smaller depending on its arrangement. Further, instead of the CCD array, an arrangement of a plurality of photoelectric conversion elements such as photodiodes may be used.

Further, in the illustrated embodiment, a case has been described in which the image areas at both ends in the scanning direction are controlled by the second shutter 18, but the exposure may be controlled by blinking the projection lamp 1.

Regarding the calculation method for determining the image area, the area where the addition result is zero is defined as a bright area, but it does not have to be completely zero, and if the calculation method is used, even if it is slightly positive, it is considered a bright area. Erroneous detection due to the influence of dust or the like can be prevented.

Furthermore, in this embodiment, image cutting in the direction perpendicular to the scanning direction was carried out by moving the shutter 16, but as shown in FIG.
If the shutter 61 that blocks the shutter 2 is divided into an arbitrary number of parts and each part is configured to rotate in the direction of the arrow A about the axis 60 using a solenoid or the like to open the slit part, the mechanism of the above embodiment can only image the area at the bottom of the figure. However, if you do this, you can also cut the image in the area indicated by 〓. That is, in a pattern as shown in FIG. 7, two image areas can be printed with unnecessary bottom and bottom portions cut out.

(Effect of the invention) The present invention consists of the above configuration and operation,
The image recording area of the information recording medium is detected, and the area to be recorded is designated from among the detected image areas to record the image area, so the desired image area can be recorded without any troublesome operations. Recording can be done.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a microfilm reader printer as an embodiment of an information recording device according to the present invention, FIG. 2 is a schematic diagram showing a search section of the same device, and FIG. 3 is a schematic diagram showing a microfilm arrangement pattern. 4 is a block diagram showing a control circuit, FIG. 5 is a block diagram showing an image frame detection circuit of the circuit in FIG. 4, and FIG. 6 is a perspective view showing another embodiment of the shutter. FIG. 7 is an explanatory diagram showing the operation of the shutter shown in FIG. 6. Explanation of symbols, 12... Photosensitive drum, 13... Shutter base, 14... Slit, 15...
CCD array, 16...first shutter, 18
...Second shutter, 30...frame, 31...
Frame image, 32...Mode switch, 36...
...Picture frame detection circuit, F...Micro film, A...
...Designating means, B...Controlling means, C...Detecting means.

Claims (1)

[Claims] 1. In an information recording device that records image information of an information recording medium by exposing it onto the image recording medium, a detection means for detecting an image recording area of the information recording medium, an image arrangement pattern of the information recording medium, and an area to be recorded. and a control means for regulating the exposure area of the image recording medium so that a specified predetermined image area is recorded based on the outputs of the detection means and the specification means. Information recording device.