JPH0438351Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a reader/printer, for example, an image on a microfilm is enlarged and projected onto a screen for viewing, or an image forming part is exposed to enlarged light for printing. It is used when you want to selectively do things like

Background of the invention In order to improve ease of use and handling, the seventh
Referring to Fig. 8, leader part A ₁ is
It has a screen 11 parallel to the front of the machine, and projects the image of the film F from the film loading section A ₃ located directly below the screen _{11 .} placed,
The image on the film F is passed through a horizontally bent optical path to the image forming section 21.
The image forming section 21 has a paper feeding section 22 and a paper ejection section 23 in front of the machine body A, and the paper is passed in the paper passing direction B on a vertical plane perpendicular to the front face of the machine body A, so to speak. A reader/printer using a screen and vertical paper feeding method has recently been developed by the inventor of the present invention.

Problems to be Solved by the Invention In the case of the above method, the reader optical system 12 that projects the image of the film F onto the screen 11 is simple, requiring only two turns of the projection optical path on the vertical plane. On the other hand, a printer optical system 24 that slit-exposes the image on the film F to the image forming section 21.
The projection optical system is complicated in that it sequentially rotates the projection optical path many times on planes in different directions, and further includes movable scanning mirrors 241 and 243 for slit exposure.

Therefore, incorporating the reader optical system 12 and the printer optical system 24 into the aircraft A by taking up a large space at the end of the projection optical path toward the large screen 11 in the reader optical system 12 means that the aircraft A will require a considerable amount of space. It will also become larger.

Means for Solving the Problems In order to solve the above problems, this invention uses a scanning mirror for slit exposure of the printer optical system.
The reader optical system is provided at the end of the projection optical path to the screen so as to scan at a constant angle with respect to the projection optical path from the film. As it moves, it is rotated and retreated out of the leader optical path.

Function The first scanning mirror uses the terminal area of the projection optical path of the reader optical system, which is a large dead space in the printer, to scan the film image and thereby bend the projection optical path from the film for slit exposure. Achieve both. The scanning movement is performed at the position closest to the film surface of the printer optical system.

In addition, during reading, the first scanning mirror is moved out of the scanning movement range, so that it is rotated and retracted out of the optical path of the reader optical system so as to turn its back to the final end of the projection optical path toward the screen of the reader optical system. To avoid affecting the reader by disturbing the optical path or by causing the reflected light from the first scanning mirror surface to reach the screen.

Embodiment Example 1 (Figs. 1 to 10) As seen in Figs. 7 and 8, the film mounting section _A8 forms the screen 11 of the machine body A as a table with an operation panel 31. A work space _A5 is provided under the head section _A4 . The aforementioned reader optical system 12
The first mirror 121 directs the projection optical path F ₁ from the film F toward the rear upper part of the aircraft A, and the projection optical path from the mirror 121 located at the rear of the aircraft A is directed to the screen 1.
1, the reader optical path 1
2 Form ₁ .

As shown in FIG. 10, the first mirror 121 is held at the tip of an arm 124 whose central portion is pivotally supported by a shaft 123. Arm 124
The spring 125 acting on the arm 124 reduces the rotation moment due to its own weight from the retracted position indicated by the solid line in the clockwise direction, and in the free state, the arm 124 lightly presses against the stopper 126 and remains stationary, moving the first mirror 121 to the first position. It is stabilized at the projection position shown by the dashed-dot line in Figures 1, 5, and 10. Tail end 12 of arm 124
4a, there is provided an actuating arm 128 centrally supported by a shaft 127, with its tail end 128a
is rotated by a motor (not shown) between two positions detected by switches 129 ₁ and 129 ₂ such as photocouplers, and the arm 1 is rotated by a tip roller 128b.
Push the tail end 124a of 24 to move the first mirror 121 to the leader optical path 1 shown in solid line in FIGS. 1, 5, and 10.
2. Either stabilize it at the retracted position to the _1- terminus, or release the pushing movement and return it to the projection position.

The printer optical system 24 described above is shown in FIGS.
As clearly shown in FIG. 6, the projection optical path F ₁ from the film F is bent horizontally parallel to the front of the aircraft A, and the upper half of the reader optical path 12 ₁ is inserted into the terminal end facing the screen 11. from the first fixed mirror 242 that directs the projection optical path from the first scanning mirror 241 to the rear of the aircraft A; A second scanning mirror 243 that directs the projection optical path downwards of the aircraft body A and scans back and forth, and the projection optical path from the second scanning mirror 243 is directed to the photosensitive drum 211 of the image forming unit 21.
A second fixed mirror 244 facing upward forms a printer optical path 24 ₁ .

As shown in FIGS. 2 and 3, the first scanning mirror 241 is fastened with bolts and nuts 40 via an attitude adjustment spring 44 to a substrate 43 whose lower end is pivotally supported by a shaft 42 on a moving table 41. There is. The board 43 is bent at its own side plate passive edge 43a and has a bent piece 4.
3b and the moving table 41 in the rising direction, and the passive edge 43a comes into contact with the stopper 46 on the moving table 41, so that the second
The scanning projection posture is maintained in the tilted state shown by the solid line in the figure.

The moving table 41 has a mounting portion 48 on one side that fits on a guide bar 47 to be supported and guided, and a mounting portion 48 on the other side that is placed on and guided by one guide bar 47 to properly move the moving table 41. Running wheels 49 for stabilizing the posture are provided respectively, and mounting portions 48
The first scanning mirror 241 is moved in the scanning direction of the first scanning mirror 241 along the guide bar 47 by driving the cable 50 which is partially fixed 50a to the guide bar 47. This movement of the moving table 41 is performed within the normal scanning movement range l (the first
7), a further small range α outside the scanning end position, which is the side that is not disturbed by other optical elements.
The extended movement is also performed as an initial process when setting the reader mode. During this extended movement of α, the passive edge 43a of the base plate 43 comes into contact with a stopper 51 fixed in the body A as shown by the dashed line in FIG. 1, 2, and 4, the first scanning mirror 241 is brought down to the position shown by the dashed line in FIGS. 1, 2, and 4.

By laying down, the first scanning mirror 241 rotates and retreats out of the reader optical path 12 ₁ so as to turn its back to the terminal end of the reader optical path 12 ₁ .

The second scanning mirror 243 is fixed to another moving table 52 supported and guided in the same way as the moving table 41, as seen in FIG. Moved in the direction of movement.

This synchronized movement of the movable base 41 and the movable base 52 is as follows.
As shown in FIG. 9, the cable 50 that drives the movable base 41 is stretched by a guide pulley 53 along the moving direction of the movable base 52 and fixed to the movable base 52 50b. By driving by 54, an interlocking relationship is achieved in which the cable 50 is shared. This is because the first and second scanning mirrors 241 and 24
This is useful for simplifying the drive system in step 3 and optimizing synchronized movement.

Embodiment 2 (FIG. 11) As seen in the figure, a cam 61 is provided that is linked to the pulley 53, and this cam 61 moves the first mirror 121 of the reader optical system between the retracted position and the projection position. .

The arm 124 holding the first mirror 121 is
The rotational behavior in which the tail end 124a is always in pressure contact with the cam 61 is supported by a spring or the like (not shown), and the cam 61
During the printer mode setting in which the first and second scanning mirrors are moved within the normal scanning range, they are rotated back and forth within the angle β ₁ range to hold the first mirror 121 at the retracted position indicated by the solid line via the arm 124, and the reader When the first and second scanning mirrors are moved out of the scanning end position due to the mode setting, the arm 124 is further rotated within the _β2 range.
The first mirror 121 is moved to the projection position indicated by the dashed line.

In the case of this embodiment, the switching operation of the two mirrors associated with switching between reader mode and printer mode is achieved by one drive system.

Effects of the invention According to this invention, the first scanning mirror of the printer optical system scans the film image and slits it by scanning by using the end area of the projection optical path of the reader optical system, which is a large dead space in the printer. Since the projection light from the film for exposure and the horizontal bending are also achieved, the optical system for these is simplified, and the space can be saved by the simplification and the use of dead space. Since the scanning movement of the mirror is performed at the position closest to the film surface on the printer optical system,
Since slit exposure can be achieved with less scanning movement of a smaller surface at an optical path position with less spread, including the second scanning mirror at the rear, the above-mentioned horizontal screen, vertical paper feed type reader printer To realize a simple and small-sized product at low cost.

In addition, during reading, the first scanning mirror is retracted out of the optical path of the reader optical system in a posture with its back to the end of the projection optical path toward the screen of the reader optical system, and the first scanning mirror is Since the influence of the reflected light on the reader from reaching the screen is avoided, the reader function is not impaired in the slightest, and the evacuation from the reader optical path slightly extends the normal scanning movement range of the first scanning mirror. Rotation is performed by transfer, and this is achieved by simply controlling the movement range without any special dedicated space or dedicated structure, so the above-mentioned features of simplicity and miniaturization are not impaired.

[Brief explanation of drawings]

Figure 1 is a front view of the reader optical system and printer optical system of the first embodiment, Figure 2 is a sectional view of the first scanning mirror support, Figure 3 is a front view of the same, and Figure 4 is the first scanning mirror. 5 is a side view of the reader optical system and the printer optical system, and FIG. 6 is a plan view of the same.
Figure 7 is a front view of the reader/printer, Figure 8 is a side view of its internal mechanism, Figure 9 is a perspective view of the first and second scanning mirror drive systems, and Figure 10 is a view of the first mirror of the reader optical system. FIG. 11 is a side view of the first mirror moving mechanism of the reader optical system as a second embodiment. 11...Screen, 12...Reader optical system, 12 ₁ ...Reader optical path, 24...Printer optical system, 24 ₁ ...Printer optical path, 241...
First scanning mirror, l...Scanning movement range, F...Film, 41...Moving table, 51...Stopper,
F ₁ ...projection optical path.

Claims (1)

[Claim for Utility Model Registration] A scanning mirror for slit exposure of the printer optical system is placed at the end of the projection optical path to the screen of the reader optical system so as to scan and move at a constant angle with respect to the projection optical path from the film. A reader/printer comprising: a scanning mirror that is moved out of a scanning movement area during reading, and rotated and retracted out of a reader optical path in conjunction with the movement.