JPH01130146A - Reader/printer - Google Patents

Abstract

PURPOSE:To facilitate focus adjustment by moving a condenser lens in reading or printing operation, and changing a light quantity distribution. CONSTITUTION:A changeover lever 10 engages with a holding member 8 holding the condenser lens 6, and the changeover lever 10 and a solenoid 14 engage with a connecting plate 13. When the solenoid 14 is operated (absorption), the changeover lever 10 rotates counterclockwise, centered about an axis 11 fitted to a base 16, and the operation is shifted to a printing state. On the other hand, when the operation of the solenoid 14 is released, the changeover lever 10 rotates clockwise, centered about the axis 11, owing to the reaction of springs 12 fitted to the base 16 and the lever 10, and the holding member 8 reaches the position in printing to change light quantity. Thus focus adjustment can be performed readily without increasing power supplied to a lighting lamp.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a reader unit that projects image information of an information recording medium such as a microfilm or photographic film onto a screen t, and a reader unit that projects the image information onto the image recording medium. The present invention relates to a reader printer having a printer section for recording data.

(Prior Art) Conventionally, as this type of reader printer, for example, the first
There is something like the one shown in Figure 0. This figure shows the optical path of a conventional reader printer, and the image on the film F is formed by an illumination lamp 116, a spherical reflection mirror 117, and so on. mirror 1
1B, it is illuminated by an illumination means consisting of a condensing lens 119.

In the printing state, the projection lens 120, mirror 121.
122, scan mirrors 123 and 124, and the slit 125a of the slit plate 125 to project onto the exposed portion of the photosensitive drum 128. In addition, when in the reader state, move the scan mirrors 123 and 124 in the direction of arrow W to a position where they do not block the optical path onto the screen 127, and move the mirror 125
, 126 to enlarge and project the image of the film F onto a screen 127.

(Problem to be Solved by the Invention) However, in such conventional reader printers, when microfilm or photographic negative film, etc. with low photographic density is projected and the focus of the projected image is adjusted on the screen 127, the screen 127 is It was difficult to adjust focus due to insufficient light intensity at 127.One way to increase the light intensity to solve this dark problem is to increase the power supplied to Kaimei lamp 116. However, if the power supplied to the illumination lamp 116 is increased, the life of the illumination lamp 116 will be shortened, and the temperature of the film surface during projection will increase, increasing the possibility of damage to the film. There is a problem in that the temperature around the lighting lamp increases due to the heat generated from the lamp, which adversely affects peripheral circuits and the like.

Therefore, the present invention has been made to solve the above-mentioned problems of the conventional example, and its purpose is to provide a reader printer that facilitates focus adjustment without increasing the power supplied to the illumination lamp. There is a particular thing.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a reader unit that projects image information of an information recording medium onto a screen, and a reader unit that projects image information of an information recording medium onto a screen. In the reader printer, the condensing lens in the illumination means for illuminating the information recording medium is configured to be movable, and the condensing lens is moved during reading or printing to control the light amount distribution. It is constructed by changing the .

(Function) In the present invention having the above configuration, by configuring the condensing lens to be movable, the condensing lens can be moved during reading to brighten the center area on the screen and facilitate focus adjustment. When printing, the condensing lens is returned to its original position so that a printed image with less density unevenness can be obtained, although the center is darker than when printing. If the purpose is to read the image on a screen, the position of the condenser lens can be moved to the print position by manual operation.

(Example) The present invention will be explained below based on the illustrated example. Third
The figure is a schematic configuration diagram of a microfilm reader printer to which the present invention can be applied. In the figure, A is a reader section, B is a printer section, F is a microfilm or photographic film as an information recording medium, and 1 is a projection screen. A halogen lamp, 2 a reflecting plate made of a spherical mirror, 5 a reflecting mirror,
Reference numeral 6 denotes a condensing lens, which constitutes an illumination section unit as illumination means. 7 is a projection lens, 2
1, 22, 25, and 26 are reflecting mirrors, and 27 is a projection screen. Moreover, 23.degree. and 24 are scanning mirrors arranged so as to form an angle of 90' with each other, and 28 is a photosensitive drum as an image recording medium. The scanning mirrors 23 and 24 are indicated by the arrow W
Or, it is a finger that can be moved in the R direction, and is normally retracted to a position away from the projection optical path a in the direction of arrow W. During printing, it moves in the R direction and is located at the start position in the optical path a. After that, it moves in the W direction and passes the optical path so that the projected image of the film F is passed through the slit 25 to the photosensitive drum 28.
Scan and expose to k.

Further, image forming means (not shown) such as an electric device, a developing device, a transfer device, and a cleaner are arranged around the photosensitive drum 28 to perform copying by electrophotography. After the exposure of the image onto the photosensitive drum 28 is completed, the scanning mirror 23
．． 24 moves in the W direction and stops moving when the photosensor 30 shown in FIG. 5 returns to the retracted position where it detects the light shielding plate 37 attached to the holding plate 36 of the scanning mirror 23.24.

1 and 2 are diagrams showing the lens arrangement relationship of the illumination section in the first embodiment in which a movable condensing lens is provided in the microfilm reader printer as described above; When in operation, FIG. 2 shows when it is a reader.

In FIGS. 1 and 2, 1 is the halogen lamp as the light source, 2 is the reflector plate that reflects the light from the lamp 1, and 3
is a condensing lens, and 4' is an insulating glass.

5 is the above-mentioned reflecting mirror, 6 is the above-mentioned condensing lens which is held by the holding member 8 and is movable in the optical axis direction, and 7 is the projection lens. A series of optical systems from the halogen lamp 1 to the condenser lens 6 are housed in a base 16 to constitute an illumination unit. Further, a switching lever 10 is engaged with the holding member 8, and a shaft 8a that slides in a long hole 16a formed in the base 16 is attached. The switching lever 8-10 and the solenoid 14 are each engaged with the connecting plate 13, and when the solenoid 14 is actuated (suctioned), the switching lever 10 moves counterclockwise around the shaft 11 attached to the base 16. Rotate.

On the other hand, when the solenoid 14 is deactivated, the switching lever 10 rotates clockwise about the shaft 11 as a fulcrum due to the reaction force of the spring 12 attached to the base 16 and the switching lever lO. The holding member 8 then moves in and out of the guide hole 15a formed in the plate body 15 as the solenoid 14 operates.

Next, the operation of the above-mentioned configuration Akinomi will be explained. First, the photosensor 30 detects the light shielding plate 37 attached to the support plate 36 of the scanning mirror 23.24, and detects whether the scanning mirror 23.24 is in the retracted position.

Based on this data, the following operations are performed under the control of the CPU 32.

That is, in the case of the reader, the scanning mirrors 23 and 24 are stopped at the retracted position when the photo sensor 30 detects the light shielding plate 37. Upon this detection, the solenoid 14 is released, and the switching lever 10 is moved from the shaft 11 due to the reaction force of the spring 12.
The holding member 8 rotates clockwise using the fulcrum as a fulcrum.
The axis 8a of is lowered along the elongated hole 16a of the base 16, and the condenser lens 6 is moved below the film F (see FIG. 2).

On the other hand, during printing, the scanning mirrors 23 and 24 are
When the photo sensor 30 detects that the light shielding plate 37 is not present, the solenoid 14 is actuated (suctioned). As a result, the switching lever lO rotates counterclockwise with the shaft 11 as a fulcrum. Accordingly, the shaft 8a of the holding member 8 is pushed up along the elongated hole 16a of the base 16, and the condensing lens 6 rises toward the film F (see FIG. 1). By blocking the light, it is detected that the condensing lens 6 is located above, and this is detected by the LED.
The information is displayed by a display means 33 such as the following. This lens movement ends quickly.

Automatic exposure adjustment using the light beam in the middle of the optical path of the reflecting mirror
The operation is completed before performing (AE), etc., and the amount of light can be detected based on the optical positional relationship for printing.

After the printing operation is completed, the scanning mirrors 23 and 24 move in the W direction, the photosensor 30 detects the light shielding plate 37,
The above-mentioned reader operation is performed automatically again.

On the other hand, if you want to read on the screen and want to increase the light spacing in the peripheral area to create a less uneven light distribution,
The lens changeover switch 35 performs the above-described printing operation and moves the condenser lens 6 upward. Furthermore, the fourth
In the figure, 31 is a scanner detection photo sensor;
4 is a reader/linter control circuit.

FIG. 6 shows a second embodiment of the present invention, in which the same members as in the first embodiment are denoted by the same reference numerals. In this embodiment, a condensing lens 40 is newly added. By inserting the condensing lens 40 on the optical axis of the illumination system or retracting it from the optical axis, the imaging position is changed and the amount of light is changed. When reading, the condensing lens 40 is inserted. , the condenser lens 40 is retracted during printing. This switching mechanism converts rotational motion into linear motion.

Due to the suction of the first solenoid 41, the condensing lens 40
and a biasing means, for example, a coil spring 42, arranged to move the condenser lens 40 in a direction opposite to the suction direction of the first solenoid 41 when the first solenoid 41 is not in the suction state. When the first solenoid 41 is in the suction state, a ratchet 43 as a locking means for fixing the condensing lens 40 in a moved state and a second solenoid 44 for releasing the ratchet 43 are provided.

When the solenoid 41 is pulled, force is transmitted from the gear 44 to the lens support member 45 and the integrated gear 46, and the lens support member 45 rotates in the direction of arrow a around the shaft 47, supporting the lens. A coil spring 42 is disposed on the lens support member 45, in which a pin 48 provided on the member 45 is locked into a ratchet 43, and applies a force to the lens support member 45 in the direction indicated by the arrow. . Therefore, when the solenoid 44 is pulled, the lens support member 45 is rotated in the direction of the arrow by the reaction force of the coil spring 42, and the condenser lens 40 is positioned on the optical axis by the abutting member 50. There is.

Further, whether or not the condenser lens 40 is inserted on the optical axis is detected by a photosensor 49 for detecting the position of the condenser lens 40. The other configurations and functions are the same as those of the first embodiment, so their explanation will be omitted.

7 to 9 show a third embodiment of the present invention. In this embodiment, the unit of the projection lens 51 is equipped with an aperture mechanism, and the projection lens is This is to change the aperture of the projection lens 51, and when reading, the aperture of the projection lens 51 is changed (
(see d in Figure 8), the amount of transmitted light is increased, and when printing,
The aperture of the projection lens 51 is made smaller (see e in FIG. 9).
, to obtain a light amount with less aberration and unevenness.

The aperture mechanism will be explained based on FIGS. 7 to 9.
Reference numeral 52 denotes an aperture blade, and a shaft 58 fitted into a hole in an aperture frame 56 and a shaft 59 that slides in a groove 57a in an aperture seat 57 are attached to the aperture blade 52. It is fixed to the frame 51a, and the diaphragm seat 57 is fitted into the lens frame 51a and slides in the rotation direction. Therefore, the aperture chrysanthemum 57 is G
When the four aperture blades 52 rotate in the direction h, the shaft 59 slides in the groove 57a of the aperture chrysanthemum seat in the h direction with the shaft 58 as the fulcrum.
Each of the four aperture blades 52 rotates counterclockwise. On the other hand, the aperture chrysanthemum seat 57 has a long hole 60a in the aperture gear 60 and a long hole 51e in the lens frame 51a that is perpendicular to the long hole 60a.
Since the aperture gear 60 is screwed into the lens frame 51a, an actuator (not shown) is driven by the gear 62. Throttle gear 60. The four aperture blades 52 are transmitted in the order of the aperture chrysanthemum seat 57 -shaft 58
The aperture of the projection lens can be changed by rotating around the fulcrum.

In each of the embodiments described above, switching between the light amount for the reader and the light amount for the printer may be performed immediately after pressing the print button.

(Effects of the Invention) According to the reader printer of the present invention, by changing the light amount distribution by moving the condensing lens during reading and printing, the area around the center of the screen is brightened during reading, for example, when printing with photographic film. It makes it easy to adjust the focus of low-density microfilm, and when printing,
A printed image with less density unevenness can be obtained.

In addition, there is no need to increase the power supplied to the illumination lamp in order to change the amount of light.

The effect is that there is no adverse effect on the film or peripheral equipment.

[Brief explanation of the drawing]

1 and 2 are side views showing the main structure of a first embodiment of the present invention, FIG. 3 is a schematic configuration diagram of a microfilm reader printer to which the present invention is applied, and FIG. 4 is a diagram showing the first embodiment. Block IA shows the control system of. FIG. 5 is a schematic diagram showing the operation of the scan mirror shown in FIG. 3, FIG. 6 is a perspective view of main parts showing a second embodiment of the present invention, and FIGS. 7 to 9 are a diagram showing a third embodiment of the present invention. An example is shown in FIG. 7, a schematic diagram showing its configuration, FIGS. 8 and 9, and a schematic diagram showing its operation, and FIG. 10, a schematic diagram showing the configuration of a conventional microfilm reader printer. Explanation of symbols 1...Halogen lamp 3...Condensing lens 6...
- Condensing lens 7... Projection lens 8... Holding member 14... Solenoid 23.24...
Scanning mirror 27...Screen 28...Photosensitive drum (image recording medium)

Claims (1)

[Claims] In a reader printer having a reader section that projects image information of an information recording medium onto a screen, and a printer section that exposes and records the image information on the image recording medium, the illumination means that illuminates the information recording medium has a A reader printer characterized in that a light lens is configured to be movable, and the light concentration distribution is changed by moving the condensing lens during reading or printing.