JPS6336332Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for selectively projecting a film on a roll and a film on a card.

In a projection device such as a microfilm reader or microfilm reader printer,
Card-shaped films such as aperture cards and film films, and long roll-shaped films are generally used as original films. When using a card-shaped film, the film is held by a movable member, and the movable member is moved in a direction perpendicular to the projection optical path to position a desired frame of the film on the projection optical path. On the other hand, when using a roll of film, the film is wound around a pair of reels, and the reels are rotated to position a desired frame of the film on the projection optical path.

In order to use these two types of films in the same projection device, it is necessary to attach and detach the movable member depending on the film to be used, but this has the disadvantage that the work becomes complicated and troublesome. Furthermore, if a roll of film is used with the movable member attached, part of the movable member will enter the projection optical path, and part or all of the optical image of the roll film to be projected will be blocked by the movable member and will not reach the projection surface. There is a possibility that it will not be projected.

The present invention provides a projection device that eliminates the above drawbacks.

The present invention will be explained below using the drawings.

FIG. 1 shows a microfilm reader printer to which the present invention is applied. Inside the main unit box 1, there is a photosensitive drum 2, a charger, a developing device, a transfer charger, a cleaning device, a paper feed device, a fixing device, etc. A printing device (not shown) is provided. A door 3 that can be opened and closed is provided at the front opening of the main machine box 1. When the door 3 is opened, the inside of the machine box 1 is opened to the outside, and the printing device can be repaired, replaced, cleaned, etc. I can do it. An L-shaped protrusion 4 is fixed on the inside of the door 3, and the tip of the protrusion 4 approaches and separates from a switch 5 for turning on and off the power of the entire device. When the door 3 is closed, the tip of the protrusion 4 switches to the switch 5.
When engaged, the switch turns on and power is supplied to the entire device. On the other hand, when the door 3 is opened, the protrusion 4 separates from the switch 5, turning off the switch 5, and power is no longer supplied to the entire apparatus, allowing work such as repair of the printing apparatus to be performed safely.

Illumination means consisting of a lamp 6 for illuminating the microfilm F and a condensing lens 7 is arranged on the main machine box. A microfilm F is held on a film carrier 10.

In addition, the machine box 11 of the leader section provided on the main machine box
A first projection lens 12 and a screen 1 are installed in front of the
3 are arranged inside the machine box 11, a second projection lens 14, a first mirror 15, a second mirror 16,
An optical system consisting of a third mirror 17 is provided. The second projection lens 14 and the first mirror 15 are fixed to a support plate 20, and the support plate 20 is fixed to a shaft 21.
It is rotatably supported. Further, the support plate 20 is connected to a cam disk 23 via a lever 22, and the shaft of the cam plate 23 is connected to a motor (not shown). Reference numeral 24 denotes a micro switch that controls the drive of the motor, and is activated in accordance with the rotation of the cam disk 23.

When the support plate 20 is in the position shown by the solid line, the second projection lens 14 is placed in the projection optical path, and the light image passing through the first projection lens 12 is reflected by the second projection lens 14 and the second and third mirrors 16 and 17. screen 13 after
projected on top. Screen 13 from the film side
The optical path length from the film surface to the photosensitive drum 2 is set shorter than the optical path length from the film surface to the photosensitive drum 2, and when the second projection lens is placed in the optical path, the film image is projected onto the screen by the first and second projection lenses. It will be in a reading state with the focus on the top.

After observing the image on the screen, when the print button is turned on, the motor is driven, the cam disk 23 rotates in the direction of the arrow, and the support 20 rotates clockwise. When the support body 20 reaches the position shown by the broken line, the microswitch 24 engages with the protrusion of the cam disk 24, and the motor is stopped by a signal from the microswitch. As a result, the second projection lens 14 is placed outside the projection optical path, the first mirror 15 is placed inside the projection optical path, and the light image that has passed through the first projection lens 12 is transferred onto the photosensitive drum 2 via the first mirror 15. be projected. When the first mirror 15 is disposed in the optical path, the image of the film is focused on the photosensitive drum by the first projection lens, resulting in a printed state.

After the first mirror is placed at a predetermined position on the optical path, the film carrier 10 and the photosensitive drum 2 are moved in synchronization, and an image is slit-exposed onto the photosensitive drum 2. The electrostatic latent image formed on the photosensitive drum is developed with a developer in a developing device, and then the developed image is transferred to copy paper and then fixed with heat in a fixing device.
A copy paper with a copy image formed thereon is obtained.

2 and 3 show details of the film carrier, in which the film carrier 10 includes a base 30 and a first movable member 31 movably held on the base 30.
and a second movable member 32 movably held by the first movable member 31.

The base 30 is connected to a motor M via a rack 33 and a pinion 34 as shown in FIG. Move in direction a.

The first movable member 31 is loosely fitted to a pair of shafts 35 fixed to the base 30, and is moved along the shafts 35 by the arrow a.
It is possible to move in the direction. A rack 36 is fixed to the first movable member 31, and this rack 36 meshes with a pinion 37 connected to an operating knob (not shown), so that when the operating knob is turned, the first movable member 31
moves in the direction of arrow a independently of the base 30.

The second movable member 32 is loosely fitted to a pair of shafts 40 fixed to the first movable member 31, and is movable along the shafts 40 in the direction of arrow b in FIG. 3. A rack 41 (see FIG. 3) is attached to the upper end of the second movable member 32.
is fixed, and this rack 41 meshes with a pinion 42 connected to an operating knob (not shown), so that when the operating knob is turned, the second movable member 32 moves to the base 30,
It moves independently of the first movable member 31 in the direction of arrow b. Furthermore, a pair of transparent glass plates 43 and 44 are arranged at the center of the second movable member 32. One glass plate 43 is fixed to the second movable member 32, and the other glass plate 44 is supported by a pressure plate 45 provided on the second movable member 32. The pressure plate 45 is supported by a pair of springs (not shown). It is biased so that the glass plates 43 and 44 are brought into pressure contact. 1 pair of glass plates 4
Recesses are formed on opposing surfaces of glass plates 3 and 44, and the rolled film is passed between the recesses of both glass plates. Note that a projection window is provided at a position facing the glass plates 43 and 44 of the base 30 and the first movable member 31, and the light image transmitted through the film is transmitted through the window of the first movable member 31 and the base. Then, it heads toward the first projection lens 12.

Further, a U-shaped card mounting base 46 is fixed to the lower end of the second movable member 32, and this card mounting base engages with the lower edge of a card-like film such as an aperture card to hold the card-like film. Holes 49 are provided in the spaced parallel walls of the card mounting table 46, as shown in FIG. In FIG. 3, reference numeral 50 indicates a reel shaft that removably holds a reel 51 wound with a roll of film, and a handle 52 for rotating the reel shaft is provided at the upper end of the reel shaft 50. . The reel shaft 50 is inserted into a hole 53 provided in the base 30 through the hole 49 of the card mounting table 46, and is disposed on the base 30 in a detachable and rotatable manner. 54 is a bearing. The reel 51 is movable in the vertical direction along the reel axis and rotates integrally with the reel axis.

In the above device, when using an aperture card as the card-like film, the reel shaft 5
0 from the base 30, place the aperture card on the card mounting table 46 of the second movable member, and
It is sandwiched between a pair of glass plates 43 and 44. Next, turn the operation knob to move the second movable member 32 vertically and move the first movable member 31 horizontally to position the desired piece of the aperture card in the projection optical path, and then display the image of the piece. Project onto the screen. To get a copy of this piece, press the print button. In response to a print command, the second projection lens 14 and first mirror 15 are moved to switch to a print state, and then the motor M is driven to move the film carrier 10 in the direction a to perform copying.

Next, when using a roll film instead of an aperture card, the pair of reel shafts 50 are passed through the holes 49 of the card mounting table 46 and into the holes 53 of the base 30.
and attach the reel shaft to the base 30. A pair of reels 51 are each fitted onto the reel shaft 50, and a film F is wound around one of the reels.
The tip is guided to the other reel through the pair of glass plates 43 and 44, and the tip is fixed to the other reel. By turning the handle 52 of one reel shaft, the film is fed from one reel to the other reel, and a desired frame of the film can be positioned in the projection optical path.

Since the reel shaft 50 passes through the second movable member 32, movement of the first and second movable members 31 and 32 in the left-right direction is restricted. Therefore, regardless of changes in film reduction ratio and projection magnification, the optical image on the film is not erroneously blocked by the first and second movable members and is always correctly projected. At this time, the second movable member 32 can move in the vertical direction, but since the card mounting table 46 and the reel 51 engage with each other, the second movable member 32 moves vertically.
The reel 51 moves in the vertical direction integrally with the movable member 32, and the pieces can be positioned in the vertical direction.

Note that only one of the pair of reel shafts may be mounted on a fixing part separate from the base.
In the present invention, the card-like film is not limited to an aperture card, but a fish film can also be used.

If you want to use the card film again after using the roll film, you can easily use the card film by removing the reel shaft 50 from the base 30 and releasing the movement restriction of the first and second movable members. can do.

As described above, according to the present invention, when a long film is used, when the reel shaft is attached to the support member, the movement of the long film in the longitudinal direction of the movable member is prevented, and the reel held on the reel shaft is movable. Since the long film moves in the width direction in conjunction with the member, there is no accident of damaging or cutting the long film, and it is also possible to create a long film with images recorded in multiple rows in the longitudinal direction of the film, that is, Duo. It is possible to project each row of images using a film that has recorded images using the duplex method, and when the long film is not in use, the reel shaft and reel can be removed, making it easier to operate the card-shaped film. is easy and safe.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a reader printer to which the present invention is applied, FIG. 2 is a plan view of a film carrier, and FIG. 3 is a sectional view taken along the line -' in FIG. 6...Lamp, 10...Film carrier, 1
2... Projection lens, 13... Screen, 30...
...Base, 50...Reel axis.

Claims (1)

[Scope of utility model registration request] In an apparatus for selectively projecting a card-like film and a long film, a supporting member, a first movable member provided on the supporting member so as to be movable in the longitudinal direction of the long film, and a first movable member provided on the supporting member so as to be movable in the longitudinal direction of the long film; The second movable member is movably provided on the first movable member and on which the card-like film is placed, and the second movable member has a hole through which a reel shaft that can attach and detach the long film take-up reel passes through. The reel shaft passes through the hole in the second movable member and is fitted into the hole in the support member, thereby preventing movement of the first movable member in the longitudinal direction and removing the reel shaft from the hole in the support member. A projection device characterized in that movement prevention of the first movable member is released.