JPH01170964A - Micro-image processor - Google Patents

Abstract

PURPOSE:To automate operations such as changing the magnifications of plural zoom lenses by simple structure by performing the zooming action of zoom lenses by means of interlocking. CONSTITUTION:A scanner 84 is provided with three projecting lenses 68, 70 and 72 in the form of line in the extending direction of a guide shaft 82 (scanning direction). The projecting lens 68 is a zoom lens of a magnification of 7-9, the projecting lens 70 is one of a magnification of 9-16, and the projecting lens 72 is one of a magnification of 16-24. When the scanner 84 moves an inter-lens distance, the projecting lenses 68, 70 and 72 are positioned selectively in their projecting paths and are used for projection. If the operation of a scanner motor 9 is controlled by a signal from a sensor 91, the scanner 84 can be moved by the interval of the lenses to replace the zoom lens for projecting a microfilm 62. In the micro-image processing device provided with plural projecting lenses, each lens can be driven by simple structure.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention is directed to a micro image processing device equipped with a plurality of zoom lenses having different magnification ranges that are selectively used as lenses for projecting images on microfilm. do.

<Prior Art> Image information recorded on microfilm is made available for use by being enlarged and projected through a projection lens.

In general, microfilm is used by being placed in a reader, which is an enlarged projector for image information, or a reader printer, which also has the function of printing and recording the image information on recording paper.

Here, recording on the recording paper is performed by subjecting a photosensitive member such as a rotating photosensitive drum to slit exposure of an image enlarged and projected by a projection lens, and transferring and fixing the image onto the recording paper using a known printing process. This slit exposure method can be broadly classified into a lens scan method, a mirror scan method, and a film scan method.

As a conventional reader printer employing the lens scan method, the one shown in FIGS. 17 and 18 is known (see Japanese Patent Laid-Open No. 143733/1983). This reader printer has a printing optical path consisting of a projection lens 8 (10), a mirror 12, etc., and a microfilm 1 illuminated by an illumination optical system 140 and a lamp 16.
The image of 8 is magnified by the projection lens 8 (10) and guided to the photoreceptor 20 by the mirror 12 etc. for slit exposure. The image of the microfilm 18 magnified by the lens 8 (10) is directed onto a screen 24 by a mirror 22 and projected.

This switching from the optical path for printing to the optical path for screen is achieved by rotating the mirror 12 counterclockwise in FIG. 17 about the shaft 26.
8 from the screen optical path.

Additionally, a turret plate 28 holding the projection lens 8 (10)
．． Film holder 30 holding microfilm 18
．． Illumination optical system 14. The lamp 16 is attached to an underframe 32, and this underframe 32 is a leader.

It is movably supported by a frame 34 of the printer via guide shafts 36 and 38. A screw shaft 40 fixed to the underframe 32 is screwed into a nut 42, and the nut 42 is rotatable but not movable in the axial direction, and is attached to the frame 34. motor 44
is connected to via a belt 46. Therefore, when the motor 44 operates, the underframe 32 is moved to the guide shaft 36.
38, and the projection lens 8 (10) scans in a direction perpendicular to its optical axis.

Here, conventionally, this type of micro image processing device has a plurality of projection lenses 8 (10) so as to change the projection magnification.
There are some that are equipped with. In the apparatus shown in FIGS. 17 and 18, two projection lenses 8 and 10 with different magnifications are provided on a turret plate 28 which is rotatably provided on the underframe 32 about a shaft 48. By rotating the turret plate 28 and positioning one of the projection lenses in the optical path, the magnification of the projected image can be changed.

<Problems to be Solved by the Invention> As described above, in the conventional micro image processing device equipped with a plurality of projection lenses, the plurality of projection lenses 8 and 10 are provided on the turret plate 28, and the turret plate 28 is By rotating these projection lenses 8.10, the projection magnification can be changed by replacing them.

Here, since the projection lens is a single focus lens, the projection magnification obtained by rotating the turret plate 28 is determined by the magnification of each lens. Therefore, if a zoom lens is used for these projection lenses, a wide range of magnification can be realized in combination with lens exchange.

However, even if a conventional micro image processing device is equipped with multiple projection zoom lenses, the operation becomes extremely complicated as the operator has to change the magnification and adjust the focus of these lenses one by one. It ends up. Therefore, when a plurality of zoom lenses are installed, it is required to easily perform operations such as zoom driving of these lenses by some means. Furthermore, in the lens scan type and film scan type reader printers mentioned above, the scanning speed must be changed depending on the projection magnification due to the print processing speed, etc., so the magnification of the zoom lens must be adjusted by some means. must be detected.

The present invention has been made in view of the above-mentioned conventional circumstances, and in a micro image processing device equipped with a plurality of projection zoom lenses, each lens can be driven with a simple structure, and the magnification can also be increased. An object of the present invention is to provide a micro image processing device that can be easily detected.

Means for Solving the Problems> The micro image processing device of the present invention that achieves the above object has the following features:
A micro image processing device that projects an image on a microfilm using a projection lens, a plurality of zoom lenses selectively used for image projection, a lens changing means for selecting and positioning the zoom lens in a projection optical path, and the zoom lens. The present invention is characterized by comprising a lens drive means that connects at least a zoom drive system of the lens and causes the zoom lens to interlock.

Function> A plurality of zoom lenses are driven in conjunction with each other by a drive source such as a motor or by manual operation from an operation knob, etc., and the magnification of these lenses is adjusted. Also, the magnification and
can also be detected all at once from the interlocking drive units.

<Example> The micro image processing device of the present invention will be specifically described based on an example.

FIG. 2 is a schematic diagram of a reader printer to which the micro image processing device of the present invention is applied. This reader/printer irradiates a microfilm 62 held in a film holder 60 with a lamp 66 of an illumination optical system 64, and projects an image recorded on the microfilm through a projection lens 6.
8 (70) and (72), and this projected image is guided to the screen 74 or the photosensitive drum 76 by switching the mirror 78. That is, when the mirror 78 is located at the position indicated by the solid line in the figure (reader mode), an image is projected onto the screen 74.

Further, when the mirror 78 is rotated downward and is in the position shown by the broken line in the figure (print mode), the projected image is guided to the photoreceptor drum 76, and in synchronization with the rotational speed of the photoreceptor drum 76, the projection image is 68 (70) and (72) are scanned in a direction perpendicular to the plane of the paper in FIG. 2, the projected image is slit-exposed onto the photosensitive drum 76, and then a copy is obtained by a known printing process. As the image processing section, an image processing input device such as an image pickup tube or a solid-state image pickup device (CCD, etc.) that reads an optical image and converts it into an electrical signal may be used instead of the photoreceptor 76.

The above lens scan is achieved by the mechanism shown in FIG. As shown in the figure, a guide shaft 82 is fixed to a base 80 of the reader/printer and extends in the scanning direction of the projection lens, and a scanner 84 is slidably supported on this guide shaft 82.

Further, a screw shaft 86 parallel to the guide shaft 82 is rotatably supported by the base body 80 while being prevented from moving in the axial direction, and the scanner 84 is screwed onto this screw shaft 86 .

The screw shaft 86 connects to the scan motor 9 via gears 88 and 90.
When the motor 92 is operated, the scanner 84 moves along the guide shaft 82. Note that the scan motor 92 is a DC servo motor with a built-in encoder, so that the position and moving speed of the scanner 84 can be controlled.

The scanner 84 has three projection lenses 68. 70°72
are arranged along the extending direction (scanning direction) of the guide shaft 82, the projection lens 68 is a zoom lens with a magnification of 7 to 9, the projection lens 70 is a zoom lens with a magnification of 9 to 16, and the projection lens 72 is a zoom lens with a magnification of 9 to 16. It is a 16-24 zoom lens. These projection lenses 68, 70, 72 are selectively positioned within the projection optical path and used for image projection by moving the scanner 84 by the distance between these lenses, as will be described later.

The scanner 84 is provided with a scan control plate 93, and the base body 80 is provided with a detection sensor 95 corresponding to this control plate 93. These control plate 93 and sensor 95 are for accurately controlling the scanning of the scanner 84 when the scanner 84 moves (scanning movement) along the guide shaft 82.

The scanner 84 also includes projection lenses 68, 70, and 72.
There are three discrimination plates 68a and 70a corresponding to each other.

? 2a, while the base body 80 has these discrimination plates 68a, 70a, ? A sensor 91 is provided for determining the 2a. That is, the discrimination plates 68a, 70a, ? One or two holes are bored in 2a, and the position or number of these holes is detected by a sensor 91 to determine the type of the discrimination plate.

In this way, the discrimination plates 68a, 70a, 72
By determining a, the corresponding positions of the projection lenses 68, 70, and 72 can be detected. Therefore, if the operation of the scan motor 92 is controlled by the signal from the sensor 91, the zoom lens used for projecting the microfilm 62 can be replaced by moving the scanner 84 in the scanning direction by the distance between each lens. These scanner 84, scan motor 92, discrimination plate 68a, 7
0 a, ? 2 a.

The sensor 91 and the CPU 150 (to be described later) constitute a lens changing means that selects the zoom lenses 68, 70, and 72 and positions one of them in the projection optical path. .

As shown in FIG. 3 as a representative example of the projection lens 68, each projection lens 68. 70. 72. are provided with a zoom gear 94 and a focus gear 96, respectively, and by rotating the zoom gear 94, the zoom lens 68
, 70, 72 are changed, and the focus of the zoom lenses 68, 70, 72 is adjusted by rotating the focus gear 96.

The focus gears 96 of each projection lens 68, 70, 72 are connected by a single chain (or belt) 97, and a focus motor 99 provided on the scanner 84 connects the gear 101 to the chain 97. connected via. Therefore, when the focusing motor 99 (pulse motor, DC motor, etc.) is operated, the chain 97 is moved via the gear 101, and the focus of each zoom lens 68.degree. 70.72 is adjusted. Focus gears 96 and chains 9 for each of these lenses 68, 70, 72
7, the gear 101 and the focus motor 99 constitute a lens drive means that connects the focus drive system of the zoom lenses 68, 70, and 72 and adjusts the focus of these lenses in conjunction with each other.

The zoom gears 94 of each projection lens 88, 70, 72 are connected by a single chain (or belt) 98, and a zooming motor 100 provided on the scanner 84 is connected to this chain 98 via a gear 102. connected. Therefore, when the zooming motor 100 (pulse motor, DC motor, etc.) operates, the gear 102
The chain 98 moves through the zoom lenses 68° and 70.72° to change the magnification of each zoom lens. Each of these lenses 68.
70, 72 zoom gear 94, chain 98, gear 10
2. The zoom motor 100 connects the zoom lenses 88, 70, 7
The two zoom drive systems are connected to constitute a lens drive means that changes the magnification of these lenses in conjunction with each other.

Here, an encoder 104 provided on the scanner 84 is connected to the chain 98, and the encoder 104 detects the rotation angle of each zoom gear 940 and detects the rotation angle of each projection lens 68. 70. 72 magnifications can be detected at once.

In addition, instead of the above encoder xo4i,
A sensor consisting of a light emitting element 106 and a light receiving sensor 107 as shown in the figure may be provided on the scanner 84, and this sensor counts the number of teeth of the zoom gear 94 and determines the rotation angle of the gear 940, that is, the projection lenses 68, 70, and 72. The magnification may also be detected.

Here, the three projection lenses 68. 70°72
The zoom lens 70 located in the center has the cam ring of the zooming mechanism opposite to the zoom lenses 68 and 72 on both sides. Therefore, one chain 980 is wrapped around the zoom gear 9 of each lens 68, 70, 72 by transmission.
4 rotate in the same direction (for example, clockwise), the magnification of the zoom lenses 68 and 72 on both sides increases, while
The central zoom lens 700 magnification is reduced. Therefore, when the magnification of one of the adjacent zoom lenses becomes the maximum, the magnification of the other becomes the minimum, and as shown in FIG. 6, the magnification - can be made continuous between the lenses 68, 70, and 72.

Note that one of the zoom gears 94 provided in each lens 68, 70, 72 is provided with a plurality of magnification reference holes 108 along the circumferential direction, as shown in FIG.
As shown in FIG. 1, a magnification reference position sensor 110 consisting of an optical sensor or the like is provided on the scanner 84 in correspondence with the zoom gear 94. These magnification reference holes 108 are provided at positions indicating the integer magnification (7x, 8x, 9x) of the lens 68, respectively, and by detecting these holes 108 with the sensor 110, the integer multiple magnification of the lens 68 is detected. can be detected. This integer multiple position is used to reset the magnification in memory to prevent errors, as will be described later.

A locking mechanism as shown in FIG. 7 is provided between the scanner 84 and the base 80. The scanner 84 has three lock bins 68b, 70b, and 72b protruding from each other, and these lock bins are provided with projection lenses 6B, 70, and 70, respectively.
72, they are arranged in rows along the scanning direction. On the other hand, a base 112 attached to the base body 80 is provided with a rocker 114 capable of engaging with any one of the lock bins 68b, 70b, and 72b so as to be movable forward and backward. A solenoid 116 is provided on the base 112, and the solenoid 116 and the rocker 114 are connected to each other with a shaft 118 as a pivot.
They are connected via a letter-shaped lever 120. Additionally, a solenoid 116 is provided between the lever 120 and the base 112.
A return spring 122 is provided to oppose the solenoid 116, and when the solenoid 116 is demagnetized, the spring force of the spring 122 causes the lever 120 to rotate clockwise in the figure, and the rocker 114 advances to engage the lock pin. On the other hand, when the solenoid 116 is energized, the lever 120 rotates counterclockwise in the figure against the spring 122, causing the rocker 114 to retreat and disengage from the lock bin.

FIG. 8 shows an operation panel provided on this reader printer. This operation panel includes a numeric keypad 130 for setting a desired projection magnification value, and a zoom set key 132 for storing the magnification value set with the numeric keypad 130 in a storage device to be described later. Zoom memory setting key 134, zoom memory key 136 for selecting a stored projection magnification, projection magnification can be changed continuously to enlarge or reduce by holding down the right end (+) or left end (-) of the operator. Zoom up/down key 138 to
, a focus key 140 for continuously adjusting the focus of the projected image, and a print button 142 for starting a print process for recording the projected image on recording paper.

Further, this reader printer is provided with a control section as shown in FIG. That is, it includes an ultra-small arithmetic element (hereinafter referred to as CPU) 160, a read-only memory (hereinafter referred to as ROM) 152, and a memory that can be read and written at any time (hereinafter referred to as RAM) 154.

The CPU 150 receives, via an input/output circuit (hereinafter referred to as Ilo) 156, discrimination signals for the projection lenses 68, 70, and 72 from a sensor 91, an operation control signal for the scanner 84 from a sensor 95, and a zoom gear. 94
A rotation angle signal is input from the zoom encoder 104,
A detection signal of the reference hole 108 representing an integral multiple position of the projection lens is input from the sensor 110. Also, from the CPU 150, the solenoid 1 of the locking mechanism is sent via l10156.
A drive pulse is output to the zooming motor 10.
0° focus motor 99. A control signal is output to a drive circuit 158 that drives the scan motor 92. Note that the ROM 152 stores the magnification range of each projection lens 68°70.72, while the RAM 154 stores the magnification range of the first projection lens.
As shown in FIG.
is provided, and the memory magnification can be changed by operating the numeric keypad 130.

The first operation of the reader printer controlled by the CPU 150
This will be explained based on the flowcharts shown in FIGS. 1 to 16.

As shown in the main routine of Fig. 11, when the power to the router is turned on, the necessary initial settings are made (step S1), and the operation system switches are checked.
When these switches are turned on, the process moves to each processing routine, and after performing each process, returns to the main routine again.

That is, check the print button 142 on the operation panel (step S2), and if it is ON, perform the print processing subroutine (step S3),
Check the zoom up/down key 138 (step S4), and if it is ON, execute the zoom up/down subroutine (step S5), and check the zoom memory key 136 (step S6).
When this is ON, the memory set subroutine (step S7) is executed and the memory set key 1 is
32 is checked (step S8), and if this is ON, a memory set subroutine (step S9) is executed.

The print processing subroutine shown in FIG. 12 will be explained.

Note that when this subroutine is executed, the mirror 78 is in a position as shown by the broken line in FIG. 1 by operating the print button 142, so that the projected image of the microfilm 62 is guided to the photosensitive drum 76.

First, after calculating the scanning distance and scanning speed of the scanner 84 from the size of the recording paper and the projection magnification (step 510)
, the scanner 8 is activated by energizing the solenoid 116 of the locking mechanism.
40 lock is released (step 511). Next, the scan motor 92 is activated to scan and move the scanner 84 in synchronization with the photoreceptor drum 76, and the slit-exposed image on the photoreceptor 76 is transferred and fixed onto recording paper by known printing processing (step 512). . Then, the scanner 84 returned to its original position is locked again by demagnetizing the solenoid 116 (step 513).

To explain the above-mentioned scanning movement in more detail, when the sensor 95 detects the edge of the notch in the control board 93 located further away than half the scanning distance plus the preliminary scanning distance, the scanning motor 92 is braked. Scanner 8
Stop 4. After confirming that the printing mechanism is ready for recording paper feeding, etc., the scanner 84
Start scanning. After starting this scan, the scan motor 9
The scanning distance is measured by counting 2 encoder pulses, and when the scanner 84 moves to the exposure end position, the brake is applied to stop it. After that, a return operation is performed while counting encoder pulses, and the scanner 84
Return to the specified position.

The up/down zoom subroutine shown in FIG. 13 will be explained.

First, it is determined whether the zoom up/down key 138 has been operated to the up side or the down side (step 520). If the operating direction is the up side, the zoom motor 100 is turned to the zoom up side (in this embodiment, rotated clockwise).
to start zooming (step 52).
1). Then, the pulses generated from the encoder 104 are counted (step 522), and the changing magnification of the projection lenses 68, 70, 72 is calculated from this count (step 523). That is, the pulses input from the encoder 104 via l101δ6 are sent to the CPU1
50 is counted, and the current magnification is calculated from the previously known amount of change in magnification per pulse. Note that it is also possible to create a table in advance that shows the relationship between the magnification and the rotation angle of the zoom gear 940 and include it in the program, and then calculate the magnification from this table based on the encoder pulse count. The relationship between the angle and the magnification does not have to be linear as shown in FIG. 6, and it is also possible to correct variations in individual lenses.

Based on the above calculation results, each projection lens 6B, 70°72
(step 524), and displays the current magnification of the projection lens currently selected for image projection on the display unit (11'' shown) provided on the operation panel of the reader printer (step 524). 525).

Next, it is determined whether the up/down key 138 is turned off (step 526), and if the control key 138 is turned off, the operation of the zoom motor 100 is stopped (step 527), and the process returns to the main routine.

On the other hand, when the key 138 is not turned off yet,
The magnification range stored in the ROM 152 in advance for each lens is compared with the magnification obtained in step S23, and the zoom end is reached, that is, the magnification side of the projection lens currently used for projection among the three. If there is still time to reach the zoom end, the process returns to step S22 to continue the process.

On the other hand, when the zoom end has been reached, the operation of the zoom motor 100 is stopped (step 529),
The sensor 91 determines whether or not the lens currently located in the image projection optical path and used for projection is the zoom lens 72 having the maximum magnification range.
a.? 2a is detected (step 530). As a result, when the lens 72 is already used for image projection, no further enlargement can be achieved, so the process from step S22 onwards is repeated and the process waits for the zoom key 138 to be turned OFF.

On the other hand, as a result of the determination in step S30, if the lens used for image projection is 68 or 70, the solenoid 116 of the locking mechanism is energized to unlock the scanner 840 (step 531), and the scan motor 92
(step 532). And scanner 8
4 moves in the scanning direction and a high magnification lens 70 or 7 follows the lens 68 or 70 that has been used for projection up until now.
2 is located within the projection optical path by the sensor 91 (step 533). In this way, the scanner 84 moves in the scanning direction by the distance between each lens, and when the projection lens having the next magnification range is replaced in the projection optical path, the scan motor 92 is stopped (step 534), and the solenoid 11B of the locking mechanism is activated. The scanner 84 is demagnetized and locked again (step 535). After replacing the lenses located in the projection optical path in this way, the processes from step S22 onwards are performed again. Therefore, zoom key 1
38, each projection lens 68°70.72 is enlarged and zoomed, and when the magnification range of a certain projection lens located in the projection optical path is exceeded, this projection lens is replaced with another projection lens having a larger magnification range. The magnification corresponding to the operation of the zoom key 138 is realized by exchanging the zoom key 138 with the zoom key 138. Here, the zooming operation direction of the lenses 68 and 72 having a magnification range subsequent to the lens 70 having an intermediate magnification range, that is, the direction of the cam ring of the zooming mechanism, is reversed, and each lens 68, 70.72 is linked by 980 winding chains, so -
When the maximum value (minimum value) of the magnification range of the zoom lens reaches the maximum value (minimum value), the lenses having the following magnification ranges have reached the minimum value (maximum value) of their magnification ranges. Therefore, continuous zooming can be performed quickly and smoothly after replacing the lens.

On the other hand, in the determination in step S20, the zoom key 138
When it is determined that the image is being operated on the reduction side, the operation is the same as the operation on the enlargement side described above except for the following points. That is, step 836) of rotating the zoom motor 100 in the opposite direction to that described above, and determining whether the lens currently in the projection optical path is the lens 68 in the minimum magnification range when the zoom end is detected (step 537). , the scanning motor 92 is rotated in the opposite direction to the above when replacing the lens (step 538).

The memory zoom subroutine shown in FIG. 14 will be explained.

First, an enlargement magnification set in advance and stored in the RAM 154 is selected by the key 134, and when the zoom memory key 136 is turned on to project an image at this selected magnification (designated magnification), this magnification is included. A zoom lens with a magnification range is compared with the magnification memory data in the ROM 152 and determined from among 68 and 70.72.
step 541). Next, each zoom lens 68. 7
Discrimination plates 68a, 70a, 72 representing the position of 0°72
a is detected by the sensor 91, and it is determined based on the input from the sensor 91 whether or not the determined lens matches the lens currently located in the projection optical path.Step 54
2), when there is a match, actuate the zoom motor 100 to achieve the selected magnification (step 5);
43). On the other hand, if there is no match, zoom motor 1
Scanner 84 with lock mechanism when operating 00
Steps S44, 45) to unlock the scanner 84), operate the scan motor 92 in forward or reverse rotation to position the zoom lens having the selected magnification in the projection optical path (steps 346, 47), and scan the scanner 84. move in this direction or in the opposite direction.

Next, it is determined based on the signal from the sensor 91 whether a zoom lens having a magnification range including the selected magnification is located in the projection optical path (step 548), and when this condition is met, the scan motor 92 is activated. Then, the scanner 84 is stopped (step 549) and the scanner 84 is locked again by the locking mechanism (step 550). Then, it is determined whether the magnification of the zoom lens has reached the selected magnification based on the pulse from the encoder 104 (step 551),
When these magnifications match -, the operation of the zoom motor 100 is stopped (step 552) and the process returns to the main routine.

On the other hand, if a zoom lens having a magnification range including the magnification selected in step S48 is not yet located within the projection optical path, the zoom lens The zoom motor 100 is stopped when the magnification reaches the selected magnification (step 554), and the lens whose magnification range includes the selected magnification is projected. It is determined whether the scan motor 92 is located within the optical path (step 556), and when this is satisfied, the scan motor 92 is stopped (step 566).
). Then, the scanner 84 is locked again by the locking mechanism and the process returns to the main routine.

The zoom memory key 136 constitutes a magnification specifying means for specifying a projection magnification. In addition, the discrimination plate 68a,
70 a, ? Step S4 controlled by 2a, sensor 91, scan motor 100, and CPU 150
Reference numerals 1, 42.44 to 49, 55.56 constitute a lens changing means for selecting a zoom lens having a magnification range including a specified magnification and positioning it in the projection optical path. Furthermore, steps S43.51 to S54 controlled by the zoom motor 100, encoder 104, and CPU 150 constitute a magnification changing means for driving the zoom lens to achieve a specified magnification.

The memory cell subroutine shown in FIG. 15 will be explained.

This routine is for changing the value in the RAM 1540 magnification memory, and first clears the magnification display on the operation panel (step 561) and waits for human input regarding the magnification from the numeric keypad 130 (step 562). Then, when this input is made, the magnification is displayed (step 563). Then, check the clear key 133 that clears the input from the numeric keypad 130 and the set key 132 that inputs this input into the memory (step S64.65), and if the set key 132 is turned on without the numeric keypad 1300A force being cleared, Enter the numeric keypad 130 manual magnification into memory (step 86)
6) Return to the main routine.

FIG. 16 shows a magnification reset routine, which is executed as an interrupt processing routine when there is an input from the sensor 107 that detects the magnification reference hole 10B, and returns to the main routine after completion.

That is, when the reference hole 108 representing a magnification value of an integer multiple is detected, the magnification value is read from the RAM 1540 magnification memory (step 571), and it is determined whether the read value is an integer (step 572). As a result, if the read value has a value below the decimal point, the value below the decimal point is cleared to zero (step 573), and the integer value is used as the read value from the magnification memory. Therefore, even if the actual magnification of the zoom lens and the stored magnification do not match, the interrupt routine allows the zoom magnification to be managed accurately based on the actual value of the lens magnification.

Note that the present invention is not limited to the above embodiments,
For example, the following various changes can be made. In the above embodiment, the arrangement direction of a plurality of zoom lenses is made to match the scanning direction of these lenses, so that lens scanning and lens exchange can be achieved with one motor 92. The present invention can also be applied to such a type in which a plurality of zoom lenses are provided on a turret plate. Further, the present invention can be applied not only to a lens scan type reader printer but also to a mirror scan type reader printer or a film scan type reader printer that scans microfilm, and furthermore, it can be applied to a reader printer that simply projects an image. can. Further, the present invention can be applied not only to beamers and reader printers, but also to so-called micro scanners (including those without a reader function) that read optical images with a CCD or the like and convert them into electrical signals.

<Effects of the Invention> According to the present invention, in a micro image processing device that is equipped with a plurality of zoom lenses and can realize a wide magnification range as a whole without requiring a wide magnification range for each zoom lens, these zoom lenses Since the zooming operations are performed in conjunction with each other, operations such as changing the magnification of multiple zoom lenses can be automated with a simple structure, and image projection and recording operations can be facilitated. Furthermore, the magnification of the lens can be detected with a simple structure, and even when a zoom lens is employed, a lens scan method and a film scan method can be easily implemented.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an image processing device according to an embodiment of the present invention;
FIG. 2 is a schematic configuration diagram of a doubler to which an embodiment of the present invention is applied, FIG. 3 is a perspective view of a zoom lens of an image processing device, and FIG. 4 is a perspective view showing another aspect of the image processing device. Fig. 5 is a perspective view of the zoom gear part, Fig. 6 is a characteristic diagram showing the relationship between the rotation angle of the zoom gear and magnification, Fig. 7 is a perspective view of the locking mechanism, and Fig. 8 is a front view of the operation panel of the reader printer. 9 is a configuration diagram of the control section of the image processing apparatus, FIG. 10 is a diagram showing the memory address of the control section, FIG. 11 is a flowchart showing the main routine of control, and FIG. 12 is a print processing subroutine of control. 13 is a flowchart showing the control up/down zoom subroutine, FIG. 14 is a flowchart showing the control memory zoom subroutine, FIG. 15 is a flowchart showing the control memory set subroutine, and FIG. 16 is a flowchart showing the control memory zoom subroutine. 17 is a flowchart showing a control magnification reset subroutine, FIG. 17 is a block diagram of a conventional glue-doubling system, and FIG. 18 is a block diagram of its scanning mechanism. 62, Microfilm, 68, 70. 72. , , zoom lens, 68
a, 70a,? 2a, Discrimination plate, 84, Scanner, 91, Sensor, 92, Scan motor, 97, 98. ,,chain, 99, ,focus motor, 100, ,zoom motor, 104, ,encoder, 150, ,CPU. Agent Patent Attorney Kiyoshi Kuwai - (1 other person) Figure 2 ○ ○ Figure 3 Figure 5 Figure 6 Rotation angle θ. Figure 9 Figure 10 Figure 12 Figure 15 Figure 16 Figure 18

Claims (2)

[Claims] (1) A micro image processing device that projects an image on a microfilm using a projection lens, including a plurality of zoom lenses selectively used for image projection, and a lens changing means for selectively positioning the zoom lens in a projection optical path. ,
A micro image processing device characterized by comprising: a lens drive means that connects at least a zoom drive system of the zoom lens and causes the zoom lens to interlock. (2) A micro image processing device according to claim 1, characterized in that a magnification detection means is interposed in a lens drive means that connects zoom drive systems of a plurality of zoom lenses.