JPH0254235A - reader printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention projects an image on a film onto a photoreceptor,
The present invention relates to a reader printer that can print on transfer materials such as paper.

<Prior Art> Conventional reader printers are equipped with an automatic exposure (AE) mechanism to maintain a substantially constant amount of light on the photoreceptor even when films of different densities are set. Since this AE mechanism adjusts the input voltage of the lamp, which is the light source, it cannot be adjusted significantly in terms of lamp life.

Therefore, by inserting and removing a filter into the optical path,
A reader printer has been invented that can keep the amount of light on the photoreceptor almost constant.

Such reader printers are equipped with a means for detecting the amount of light after passing through the film, and depending on this amount of light, the filter is automatically moved in and out of the optical path so that the amount of light on the photoreceptor remains approximately constant. It has a mechanism to

<Problem to be solved by the invention> However, in the conventional method mentioned above, while the operator is searching the film, the amount of light after passing through the film changes at that moment, so the filter is activated each time. This may cause noise or problems with durability.

SUMMARY OF THE INVENTION In view of the problems of the prior art described above, it is an object of the present invention to provide a reader printer that does not emit noise during fill-up operation and is durable.

Means for Solving the Problems> In order to achieve the above object, the present invention is such that the filter is not activated during operation in the optical path or during movement of the film.

Furthermore, it is effective to make the film holding device a touch sensor so that the filter is not activated when the user is out of the store and waving his/her hand at the film holding device.

Further, the filter may not be activated except immediately after the print switch is pressed.

In the reader printer configured as described above, the filter does not operate during operation of the film holding device, for example, during film retrieval, so noise caused by unnecessary operation of the filter is eliminated and durability is improved.

Further, by providing a touch sensor in the film holding device, it is possible to prevent the filter from automatically operating when the film holding device is touched.

Further, the filter operates only immediately after the print switch is pressed, so that unnecessary filter operation can be avoided.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a schematic configuration diagram of a microfilm reader printer.

In the figure, 1 is a film illumination section consisting of a lamp 1a, a heat insulating filter 1b, a condensing lens 10, etc., and F is a microfilm, which is set in a carrier 20 as a film holding device, and the target frame image area Fa is manually or automatically set at the film illumination unit position or at the search position, and the carrier 20 is provided with a touch sensor that detects a manual touch. 2 is a projection lens;
Reference numeral 3 designates a rotating mirror which is rotated and driven around a shaft support 3a, and is disposed above the projection lens 2, 4 is a fixed first mirror, 5 is a fixed second mirror, and 6 is a projection screen.

The rotary mirror 3 is held in the first angular posture position shown by the solid line in the reader mode, and as a result, the film illumination section 1→projection lens 2→mirror 3→mirror 4
A reader system optical path from →mirror 5 →projection screen 6 is constructed, and the target film frame image Fa located at the search position in the film illumination section 1 is projected onto the projection screen 6.

On the other hand, 7 is a fixed third mirror, 8 is a fixed fourth mirror, and 9 is a printing mechanism. The printing mechanism 9 is a transfer type electrophotographic copying mechanism, and includes a photosensitive drum 10 that is rotationally driven in the direction of the arrow, a charger 11, a slit plate 12, and a photosensitive drum 10 around the photosensitive drum 10. Developing device 13. Necessary image forming process equipment such as a transfer charger 14 and a cleaning device 15 are sequentially arranged. 16 is a paper feed cassette containing transfer material P such as copy paper, 17 is a fixing device, and 18 is a copy tray.

Further, a filter 21 is disposed between the projection lens 2 and the rotating mirror 3, and the filter 21 is arranged between the projection lens 2 and the rotating mirror 3. It is held at one end of the bar 22 and its other end is directly connected to the output shaft of a motor 23, so that when the motor 23 rotates, the filter 21 can be rotated in and out of the projection optical path.

Furthermore, the rotating mirror 3 is a no-f mirror, and a light receiving sensor 24 is provided on the back side of the rotary mirror 3. It is also designed to be incident on the

The operation of this embodiment with the above configuration will be explained with reference to the flowchart in FIG.

When the operator prints a frame with film F, first turn on the power switch (not shown) (#1), and then turn on the carrier 2.
Set the film F to 0 (#2), adjust the focus while looking at the screen 6 #3), and search for the desired frame (
#4). When this operation is completed, the operator
Let go of your hand.

Then, the sensor provided on the carrier 20 detects that the hand is removed (#5), and at this point, the light receiving sensor 24 provided on the back side of the rotating mirror 3 detects the amount of light (#6). Then, in #7, if the amount of light is small, the motor 23 is driven (#8a) and the filter 21 is retracted out of the projection optical path (#9a), and if the amount of light is large, the motor 23 is driven (#8b), The filter 21 is inserted into the projection optical path (#9b). It goes without saying that if the detected amount of light corresponds to the position of the filter 21, there is no need to drive the motor 23.

After this is completed, when a print switch (not shown) is operated (#10), the reader mode is switched to the print mode (#11), the control system of the print mechanism 9 is turned on, and the photosensitive drum 10 rotates at a predetermined speed. Driven. Then, the rotating mirror 3 held at the first angular attitude position shown by the solid line rotates the photosensitive drum 10 around the shaft support 3a to the second angular attitude position shown by the two-dot chain line by a drive mechanism (not shown). It is rotated and driven at a predetermined constant speed that is synchronized with the circumferential speed.

As the rotary mirror 3 rotates, the reflected light from the rotary mirror of the film frame image light incident on the rotary mirror 3 from the projection lens 2 side is directed from the direction toward the fixed first mirror 4 to the fixed third mirror 4.
They will move sequentially in the direction towards J-Ra7. The light incident on the third mirror T is reflected by the third mirror 7 and sequentially enters the surface of the rotating photosensitive drum 10 along a path from the fixed fourth mirror 8 to the slit plate 12. As a result, an enlarged image of the film frame image Fa is slit-exposed on the surface of the photosensitive drum 10 by the rotation of the rotating mirror 3, and an enlarged image corresponding to the film frame image Fa is formed on the circumferential surface of the photosensitive drum 10 according to a known operating principle. Toner images are sequentially formed, and the toner images are sequentially transferred to the surface of a transfer material P that is synchronized with the rotation of the photosensitive drum 10 and fed to the transfer charger 14, which is a transfer section, and the transfer material P is The image is discharged to a copy tray 18 via a fixing device 17. That is, an enlarged copy Pa of the target film frame image Fa is printed out.

Note that in the above embodiment, the number of filters 21 is one, and the amount of light is 2.
Although it can only be changed in stages, the light intensity can also be changed in other stages if two or more filters are used.

Further, in the above embodiment, the filter 21 is inserted into and removed from the print and reader optical paths, but it may be inserted only into the print optical path or only into the reader optical path to change the amount of light on the screen.

Furthermore, in the above embodiment, since the manual carrier 20 was used, the filter 2 is activated when the operator releases the hand.
1 was activated, but an automatic fish search carrier or electric roll carrier may also be used. In that case, light intensity detection should be performed after the film has stopped, that is, after the carrier drive or film drive motor has stopped. do.

In addition, in the case of a manual carrier as in the above embodiment, it is detected when the operator takes his hand off the carrier, but a switch is provided on the carrier, etc., and the operator can press the switch after completing the film search to adjust the light intensity. A means for initiating detection may also be used. Furthermore, the amount of light may not be detected in the trench where the printing operation begins, and the amount of light may be detected only after the operator presses the print button.

<Effects of the Invention> As explained above, the present invention prevents the filter from operating during operation of the film holding device or movement of the film, thereby eliminating noise caused by unnecessary operation of the filter and improving its durability. can be improved.

Further, by providing a touch sensor in the film holding device, it is possible to ensure that the filter is activated only when necessary.

Further, by not operating the filter except immediately after pressing the print switch, it is possible to prevent unnecessary operation of the filter.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a reader printer according to an embodiment of the Hata invention, and FIG. 2 is a flowchart illustrating its operation. 1... Film illumination section, 2... Projection lens, 3...
- Rotating mirror 6...Screen, 9...Print mechanism, 20...Carrier (film holding device), 21
...Filter, 23...Motor, 24...Light receiving sensor, F...Micro film, P...Transfer material. FIG.・-Motor 24...dir, failure

Claims (1)

[Scope of Claims] 1. In a reader printer having a filter movable in and out of the optical path and a sensor for detecting the amount of light transmitted through the film, the filter is not operated while the film holding device is being operated or the film is being moved. A reader printer with special features. 2. The reader printer according to claim 1, wherein the film holding device is provided with a touch sensor, and the filter is not operated when the film holding device is touched. 3. The reader printer according to claim 1, wherein the filter is not activated except immediately after the print switch is pressed.