JPS62264036A - Film projecting device - Google Patents

Abstract

PURPOSE:To continuously project continuous images imprinted on specific frames with an easy operation by providing a projection control means equipped with specific means for the selection of projection frames and frame feed. CONSTITUTION:A projection control means MC is provided which is equipped with frame feeding means FM1 and FM2 which successively select frames arranged in the transverse direction of a film F by a projection frame selecting means FS which allows respective center of plural frames arranged in the transverse direction of the film F to selectively coincide with a projection optical axis L of a projection optical system at every time when the film F is carried by one frame by a film feeding mechanism FH which carries the film F in the longitudinal direction. Since frames are fed by frame feeding means FM1 and FM2 of the projection control means MC so that frames arranged in the transverse direction of the film are successively selected at every time when the film F is carried by one frame in the longitudinal direction, special operations are not required at all. Thus, a series of images which are imprinted on frames arranged in the transverse direction of the film and are related to each other are projected successively.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to, for example, a microfilm league in which a microimage on a microfilm in which various information is recorded at high density is projected onto a screen, and an electrophotographic process. The present invention relates to a film projection device such as a microfilm printer that projects images onto a photoreceptor in order to copy them as visible images on recording paper.

More specifically, it includes a projection optical system that projects an image imprinted on a film, and a film transport mechanism that transports the film in its longitudinal direction, and the center of each of a plurality of frames lined up in the width direction of the film. The present invention relates to a film projection apparatus provided with projection frame selection means for selectively aligning a projection frame with a projection optical axis of the projection optical system.

[Conventional technology]

There are various methods of arranging frames in a film used in this type of film projection apparatus. For example, in microfilm, which is an example of film, there are a simplex type in which only one frame exists in the width direction of the film, and a duo type or duplex type in which two frames are lined up in the width direction of the film.

Therefore, in this type of projection device, when using a type of film in which two frames are lined up in the width direction of the film as described above, by projecting the images on each frame separately, In order to display each image on a screen or to obtain a copy of each image, the center of each frame of a plurality of frames lined up in the width direction of the film is projected, and an optical system is used to project the images. Some devices are provided with projection frame selection means for selectively matching the optical axis.

As this projection frame selection means, for example, a carrier that holds the film so as to be transportable may be configured to be movable in the width direction of the film, or a projection optical system may be configured to be movable in the width direction of the film. There is something. Conventionally, the selection of frames to be projected by such a projection frame selection means has been carried out either manually using a manual operating tool such as a knob or handle, or automatically selected by a motor driven by the operation of a frame selection switch or the like. It was carried out by

[Problem that the invention seeks to solve]

However, the conventional configuration described above has the following problems.

In other words, if we take microfilm, which is an example of film, as mentioned earlier, of the two types in which two frames are lined up in the width direction of the film, duplex type microfilm has two frames lined up in the width direction of the film. The basic format is that the front image and the back image of the subject are separately imprinted on two side-by-side frames.

Therefore, the image of a multi-page document imprinted on this duplex-type microfilm is not positioned continuously in the longitudinal direction of only one row of the microfilm as in the case of a duo-type microfilm. Rather, they continue along the length of the microfilm, alternately located in rows on both sides of the microfilm.

Therefore, for example, in a microfilm printer,
When an image of a multiple page document imprinted on this duplex type microfilm is projected onto a photoreceptor to obtain a copy of the document, each time the film is conveyed one frame in the longitudinal direction, The user must operate the projection frame selection means such as the manual operating tool or frame selection switch mentioned above, and even if the projection frame is automatically selected by a motor based on the operation of the frame selection switch, etc. However, the operation is cumbersome, and there are cases where copying is omitted due to forgetting an operation, resulting in poor work efficiency.

On the other hand, a similar problem occurs when, for example, in the Microfilm League, each image on the microfilm is enlarged and projected onto a screen to increase the magnification and make it easier to search for a desired image. Ta.

In view of the above-mentioned circumstances, an object of the present invention is to provide a film in which the images printed on multiple frames lined up in the width direction of the film are connected and continuous, such as in duplex type microfilm. The second objective is to enable frame-by-frame advance using the film with a simple operation.

[Means for solving problems]

The characteristic configuration of the film projection apparatus according to the present invention is that each time the film is transported one frame by the film transport mechanism that transports the film in the longitudinal direction, the projection optical system moves the center of each of a plurality of frames lined up in the width direction of the film. The present invention is characterized in that a projection control means is provided with a frame advancing means for sequentially selecting frames arranged in the width direction of the film by a projection frame selection means selectively aligning the projection optical axis with the projection optical axis of the film.

[Operation] In other words, the frame feeding by the frame feeding means of the projection control means sequentially selects the frames arranged in the width direction of the film every time one frame is conveyed in the longitudinal direction of the film, so no special operation is required. It is possible to sequentially project a series of interconnected images that are printed on each frame arranged in the width direction of the film without the need for such a method.

〔Example〕

The present invention will be described in detail below based on the drawings.

As shown in FIG. 2, a microfilm reader printer is constructed by combining a reader printer main body (1), a film carrier (2), and a controller (3).

This microfilm reader printer, which is an example of a projection device, has a reader mode that enlarges and projects a microimage on a microfilm (F) held on a film carrier (2) onto a screen (4), and an electrophotographic process. You can switch to a print mode for enlarging copies onto recording paper.

Inside the film carrier (2), as shown in Figure 3,
A supply reel (5) and a take-up reel (6) are mounted on a moving base (2).
A) It is provided above. Both reels (5).

The microfilm (F) stretched across (6) is
A pair of glass plates (8a) that are guided by a plurality of guide rollers (7a) to (7c) and constitute a light irradiation section (8).
.

(8b) are held closely together.

The center of this light irradiation unit (8) is aligned with the projection optical axis (L) from the light source (9) when the film carrier (2) is set on the reader printer main body (1). . The rotation axis (1) for both reels (5) and (6)
0) and (11) are the transmission mechanisms (12) and (
13) through each separate motor (14), (15)
It is linked to the motor (14) or (15
), the microfilm (F) can be fed in either forward or reverse direction.

The take-up reel (6) is pivotally supported by the film carrier (2), while the supply reel (5) is housed in a cartridge (16), and this cartridge (16) is connected to the film carrier (2). It is configured to be detachable from the

The rotation axis (lO) for the supply reel (5) is
When the cartridge (16) is mounted on the film carrier (2), it automatically engages the supply reel (5).

When the cartridge (16) is installed, if the rotating shaft (10) engages with the supply reel (5), the microfilm (F
), the supply reel (5) is momentarily rotated counterclockwise in the diagram.

After that, the feed belt (17) linked to the feed motor (not shown) is brought into contact with the film surface, and the supply reel (5) is rotated clockwise in the figure together with the microfilm (F), so that the film surface is Pull out the tip of the film (F) using the peeling bell (1B) that was brought into contact with it. Then, by further driving the feed motor, this film (F)
The tip of each guide roller (7a) to (7C) and
It passes through the light irradiation part (8) with the pair of glass plates (8a) and (8b) released from the close contact state, and then passes through the take-up reel (6
) so that it can be wrapped around.

After that, the delivery belt (17) and the peeling bell I-(18)
are separated from the film surface, and a pair of glass plates (8a) and (8b) constituting the light irradiation section (8) are brought into close contact with each other.

From then on, the transport of the microfilm (F) will be carried out as described above.
This is done by two motors (14) and (15).

Then, the operation of the film feeding mechanism (FH), which is composed of these two motors (14) and (15), etc. and transports the microfilm (F) in its longitudinal direction, is controlled by a control system (CD), which will be described later. It is configured so that the microfilm CF) can be stopped at a predetermined position by counting preps (M), which will be explained later.

In this state, by selecting one of the modes described earlier, the micro image imprinted on the micro film (F) located in the light irradiation section (8) can be enlarged or projected onto the screen (4). , so that it can be enlarged and copied onto recording paper.

By the way, in a microfilm reader printer using this film carrier (2), three types of microfilm (F) can be used. Next, each type of microfilm (F) and each type of microfilm (F)
) The configuration of the glue-double link to support the above will be explained.

The first type, as shown in Figure 4 (A), has only one frame (FF) in the width direction of the microfilm (F), and one microimage is printed on this frame (FP). It is embedded. A frame search mark, a so-called blip (M), is imprinted on each frame (FF). This type of microfilm (F) is usually called a simplex type.

Moreover, both the second type and the third type are
Two frames (FF) are placed in the width direction of the microfilm (F).
a) , (FFm) are provided side by side, and those two
A different micro image is imprinted on each of the two frames (FFA) and (FFm).

The second type is called a duo type shown in FIG. 4(0), and the third type is called a duplex type shown in FIG. 4(c). The difference between the two types is the method of continuously recording micro images onto each frame (FFA) and (FPm).

In the duo type, multiple interconnected consecutive microimages are formed on microfilm (F).
They are printed side by side in two rows (each row is called a channel) divided into two along the longitudinal direction.

That is, after consecutive micro images are imprinted on each frame (FFa) of one channel (this channel is called the A-channel), microfilm (F) is printed.
invert the other channel (this channel <B-
Each frame (FFi) of the channel) is imprinted with another consecutive micro-image. And in any channel, each frame (FFa)
, (FFm), one blip (M) is imprinted.

On the other hand, in the duplex type, a plurality of interconnected consecutive microimages are formed into two frames (FFA) lined up in the width direction of the microfilm (F).
, (Fh), and this process is repeated in the longitudinal direction of the microfilm (F). As with the duo type, each of the two rows is connected to the A-channel)
, is called <B-channel>.

With this type, for example, each frame (FFA) of the (A-channel) is imprinted with an image of the front side of the subject such as a document, and each frame (FFm) of the <B-channel> is imprinted with the image of the back side of the subject. An imprint method such as imprinting an image is possible. In addition, in the duplex type, the image imprinted on the <A-channel> frame (FF, ) and the image imprinted on the <B-channel> usually have the above-mentioned front-back relationship. In many cases, there is a close connection such as this, and one blip (M) is imprinted for each frame (FFA or FFI) in only one channel.

Returning to the configuration of the microfilm reader printer and continuing the explanation, as shown in Figure 3, the film carrier (2
) A blip detector (19) is attached to the light irradiation section (8). This blip detector (19) consists of a pair of light receiving elements (19a) and (19b). Both light receiving elements (19a) and (19b) each receive light from a light source (9) onto a microfilm (F) when the film carrier (2) is installed in the league printer main body (1).
) The blip (M) is detected based on the change in the received light intensity due to being blocked by the blip (M) which is darker than the base portion of the blip (M). As the microfilm (F) is fed, a film counter (not shown) is counted up each time this blip detector (19) detects a blip (M), and the counted value of this film counter is counted up. , the frame at that position (FF).

You can see the frame numbers of (FFA) and (FFI).

As shown in FIG. 5, both the above-mentioned light receiving elements (19a)
, (19b) are provided at positions facing the two blips (M) on the duo-type microfilm (F), respectively. In other words, for duo-type microfilm (F), without changing the direction in which the microfilm (F) is held by the film carrier (2),
Two light receiving elements (19a).

(L9b) so that blips (h) of both channels can be detected.

In addition, simplex type microfilm (F)
, and for the duplex type microfilm (F) shown in FIG.
) can detect the blip (M) only.

As mentioned above, the sequence for shooting Duo type microfilm (F) is from the leading edge of the A-channel to the end of the film, then switching to the B-channel. 〉Reverse feed from the end of the film to the leading edge of the film. The microfilm reader printer is configured to search for each frame (FFA) and (FFI) of the duo type microfilm (F) by transporting the microfilm (F) in the same way as when shooting. ing. Therefore, frame numbering by counting blips (M) when searching for microimages imprinted on duo-type microfilm (F) is done in the same order as when shooting, and the frames (ppa) of each channel are .

(FFI) respectively have frame numbers that increase in one direction and decrease in the other direction along the longitudinal direction of the microfilm (F).

On the other hand, duplex type microfilm (F
), for example, the front image and back image of the subject are separated by one shutter operation, etc.
Each frame of <A-channel> (FFA) TokuB-
At the same time, place one piece of unexposed microfilm (F) in the longitudinal direction of the frame (Fh) of
This is performed by repeating this imaging operation while conveying the paper one by one.

And duplex type microfilm (
Frame numbering by counting blips (M) when searching for micro images imprinted in F) is <A-
This is done by counting and amplifying two frames each time a blip (M) is detected, assuming that two frames of the channel (FFa) and the frame of the B-channel (FF11) are 1 m. FFA) and (FF11) are continuous in the width direction of the microfilm (F) and have continuous frame numbers that increase by two along the longitudinal direction of the microfilm (F).

When the microfilm (F) used is a simplex type or a duo type, one method for searching for a target microimage in this microfilm reader printer is to search for the frame on which the microimage has been printed. input the frame number assigned to the controller (3), and while transporting the microfilm (F) in its longitudinal direction, each frame (FF), (FF
A).

1 each time a blip (M) attached to (FFI) is detected.
This is performed by counting up the microfilm (F) one by one and continuing to transport the microfilm (F) until the count value matches the input frame number.

In the case of duo type microfilm (F), blip (M) is carried out to transport the film (F) in the longitudinal direction.
7) The count-up is done in the same way as the shooting order. That is, first, the light receiving element (
The number of blips (M) of each frame (FFA) of <A-channel> is counted up using the signal from 19a). If the desired microimage is not found in the A-channel, reverse the film (CF) and
The number of blips (M) of the frame (FFI) of the <B-channel> is further counted up using the signal from the light receiving element (19b) on the <B-channel> side.

In addition to the method described above, you can search for microimages on simplex type and duo type microfilm (L?) by manually calculating the total number of frames contained in the microfilm (F) in advance. If the frame number entered for the search is close to the total number of frames, you can also count down the total number of frames each time a blip (M) is detected while advancing the microfilm (F). Can be used.

On the other hand, duplex type microfilm (F)
To search for a micro-image using
This is done by inputting from the controller (3) a channel code indicating which channel F5) belongs to.

That is, while transporting the microfilm (F) in its longitudinal direction, the preps (M) attached to each frame set are sequentially counted, and the microfilm (F) is transported until the counted value matches the input frame number. Continue transport. after that,
Depending on the input channel code, as will be described later, by appropriately moving the moving stage (2A) of the film carrier (2) in the width direction of the microfilm (F), the desired microimage can be printed. The piece on that side (F
The center of the projection optical axis (FA or FF) is aligned with the projection optical axis (L).

As shown in Figure 3, when the film carrier (2) is installed in the league printer main body (1), the light from the light source (9) is applied to each frame at the light irradiation part (8) of the film carrier (2). (FF) , (FFa) , (FFa)
Transmits the micro image imprinted on the image. As shown in FIG. 6, the transmitted light beam is transmitted through a projection module (2) having a projection lens (20a) and an image rotation prism (20b) in both the reader mode and the print mode.
0), it is reflected by the first mirror (21a).

In the case of reader mode, this reflected ray bundle is
After being reflected by the mirror (21b) and the third mirror (21c), it reaches the screen (4).

Thereby, the micro image is enlarged and projected onto the screen (4). Furthermore, in the print mode, the second mirror (21b) rotates and retreats to the position indicated by the imaginary line in the figure. The light beam reflected by the first mirror (21a) is reflected by the fourth mirror (21d) and the fifth mirror (21e), and then projected onto the photosensitive drum (22). and,
By moving the first mirror (21a) and the fourth mirror (21d) to the right in the figure, the photosensitive drum (22)
An electrostatic latent microimage is formed thereon. Thereafter, an enlarged copy of the microimage can be obtained on recording paper (P) by means of well-known electrophotographic processes.

That is, the projection module (20), the first mirror (21a)
, second mirror (21b), and third mirror (21c)
A projection optical system (RP) for the league is constructed by enlarging and projecting the micro-image onto the screen (4). In addition, a projection module (20), a first mirror (21)
a), a fourth mirror (21d), a fifth mirror (21e), etc. constitute a printing projection optical system (PP) that enlarges and projects a micro-image onto the photoreceptor drum (22). Both the league projection optical system (RP) and the print projection optical system (PP) are examples of the projection optical system according to the present invention.

The image rotation prism (
20b) consists of a trapezoidal prism, and the projection optical axis (
L) It is configured so that it can rotate around the body.

In other words, the vertical direction of the microimage imprinted on the microfilm (F) does not always match the vertical direction of the screen (4), and on the other hand, the longitudinal direction of the microimage is the longitudinal direction of the recording paper (P). may not necessarily match. Therefore, the micro image is projected horizontally on the screen (4) in the reader mode, or the enlarged image of the micro image is projected onto the recording paper (4) in the print mode.
In order to prevent the inconvenience of protruding from 1'),
Utilizing the optical property of the trapezoidal prism that the projected image rotates around the same axis by a rotation angle that is twice the rotation angle around the vertical axis, the image rotation prism (20b) is rotated by +/-45 By rotating the micro-image by 90 degrees, the direction of the projected micro-image can be rotated by 90 degrees.

The magnification by the projection optical system (RP) for the reader described above is normally determined by the widthwise dimension ((dv) in Figure 4 (a)) of the microfilm (F) of the simplex type frame (PF). , vertical dimension of screen (4) (second
The magnification is set to be approximately equal to (DV) in the figure. Each frame (FF) of the simplex type has its center line along the longitudinal direction of the film ((Co) in Figure 4 (a)) aligned with the screen (4).
The moving stage (2A) of the film carrier (2) is positioned so that it coincides with the vertical center line ((Cs) in Figure 2) of the image, and the image is projected as shown in Figure 7 (A). .

On the other hand, in this state, if a duo type or duplex type microfilm (F) is used, the seventh
As shown in Figure (TI), two microimages are separately imprinted on a pair of frames (FFA) and (FFI) lined up in the width direction of the microfilm (F), on the top and bottom of the screen (4). are projected side by side.

In this microfilm reader printer, by changing the projection lens (2OA) to one with a different magnification in this state, the microfilm (FFa) and (FFI) of each frame of the duo type and duplex type can be F) for the reader so that the longitudinal dimension ((dM) in FIG. 4 (If)) is approximately equal to the lateral dimension ((DH) in FIG. 2) of the screen (4). The magnification of the projection optical system (12P) can be changed. but,.

As it is, as shown in Figure 7 (c), there are two channels of frames (FFA) on the screen (4).

(ppm), but only a portion of each image is projected.

Therefore, in order to accommodate the use of duo-type and duplex-type microfilms (F), the entire moving table (2A) of the film carrier (2) is moved in the width direction of the microfilm (F). The relative position between the film (F) and the screen (4) can be changed. As a result, when a duo type or duplex type microfilm (F) is used, for example, as shown in Figure 7 (=), the frame of either channel (FFA or F
The entire FI) can be projected onto the screen (4).

Next, the configuration for this purpose will be explained. First, within the film carrier (2), the moving stage (2A) that holds the supply reel (5) and take-up reel (6) is moved in the width direction of the microfilm (F) with respect to the base (2B). The carrier moving device will be explained.

As shown in Figure 3, the base of the film carrier (2) (
2B) is the table (2) on the reader printer main body (1) side.
3), it is fixed in a slidable state. Then, by releasing this fixation, the moving platform (
2A) can be removed along with the base (2B), and instead of the film carrier (2) that holds the roll film, you can set a fish carrier (not shown) that holds the microfiche. There is.

The moving table (2A) has two long holes (2a) and (2b) formed along the width direction of the microfilm (F). (2B
), the guide pins (2c) and (2d) are respectively fitted in a locked state. That is, within the film carrier (2), the movable stage (2A) and the base (2B) are attached so as to be relatively movable in the width direction of the microfilm (F).

Moreover, the rack (24) fixed to the base (2B) is positioned so as to be exposed through another elongated hole (2e) formed in the movable table (2A). And this rack (24
) and the pinion gear (25) that engages with the moving table (2A).
It is interlocked and connected with a motor (26) fixed to.

By rotating this motor (26) in the forward and reverse directions, the moving table (2A) can be moved to the base (2B) within the film carrier (2).
can be moved in the width direction of the microfilm (F). This motor (26) is further equipped with a low-return encoder (27) that converts the rotational speed of the motor (26) into an electrical signal and outputs it. The output signal from this rotary encoder (27) is input to a microcomputer (MC) that constitutes a control system (CD), which will be explained later. 2B) and mobile platform (2^
) can detect the relative position.

And duplex type microfilm (
F), the controller (3) shown in Figure 2 is used.
) so that the entire frame (FFa or FFI) of the specified channel is projected onto the screen (4).
) The moving table (2A) is moved within the range.

Specifically, the center line along the longitudinal direction of the film (Fig. 4 (
(C^) or (Cm ) ) in the screen (
4) is configured to drive and control the motor (26) in order to move the moving table (2A) so as to coincide with the vertical center line ((CS) in FIG. 2). As a result, frames (FFA) and (Fh) are projected on the screen (4) as shown in FIG. 6(d), for example.

To further explain this control, when using a duplex type microfilm (F), <
The microfilm (F) is conveyed in the longitudinal direction with the center line (Ca) of the frame (FFa) of the A-channel> along the longitudinal direction of the film aligned with the projection optical axis (L). There is.

Then, when the count value of blips (M) matches the value corresponding to the frame number specified by the controller (3), the specified channel is selected using the channel specification information from the controller (3). A-channel>.

As a result, the specified channel is <B-channel>
If so, the motor (26) is driven in a predetermined direction by a predetermined amount corresponding to the distance between both channels to move the moving table (2A) in the width direction of the microfilm (F). Whether the moving amount of the moving table (2A) has reached a predetermined amount is determined by the coordinate value on the coordinate axis extending in the width direction of the microfilm (F), which is calculated based on the detection information from the row encoder (27). It is done rather than doing.

Note that if the designated channel is <A-channel>, the moving table (2A) is not moved.

In other words, the transmission mechanism is a combination of the rack (24) and the pinion gear (25), the motor (26), etc.
Microfilm (F) when using duo type and duplex type microfilm (F)
Two frames lined up in the width direction (FFA), (FF,)
By selectively aligning the center of each frame with the projection optical axis (L), the micro images projected in each frame (FFA) and (FFI) are projected approximately near the center of the screen (4). This constitutes projection frame selection means (FS).

Furthermore, when using a duplex type microfilm (F) by utilizing the frame selection operation by the projection frame selection means (FS), each frame (FFA), (
The structure is such that continuous copying of a plurality of microimages imprinted on FFa can be easily performed.

That is, as already mentioned, in the duplex type microfilm (F), for example, the front image and the back image of the original are separated into a pair of images aligned in the width direction of the microfilm (F). Frame (FFA) = (F
Pm).

Therefore, images of a document spanning multiple pages are continuous in the longitudinal direction of the microfilm (F) while being alternately located on the <A-channel> and <B-channel> of the microfilm (F).

With Duo type microfilm (F), the image of a multi-page document as described above is usually <A-
Since the frames (FFA or FF5) lined up in the longitudinal direction of the microfilm (F) are continuously imprinted on either channel (B-channel), if they are to be copied continuously, , Once you move the moving table (2A) of the film carrier (2) and select any channel, all you have to do is move the film advance 8.
141 (pu), the microfilm (F) may be copied frame by frame in its longitudinal direction.

However, duplex type microfilm (
In case of F), since the micro-image imprinting method is different as mentioned above, it is necessary to switch the channels before copying or to re-collate the copies after copying. Therefore, in this microfilm reader printer, each time the film feed mechanism (FH) transports the microfilm (F) one frame at a time, the projection frame selection means (PS) described above moves the microfilm (F) in the width direction. Two frames lined up (
ppk) and (tpm) in sequence, the first frame advancing means (FMI) is a frame advancing means according to the present invention;
It is provided in the projection control means (MC) described later.

The projection control means (MC) uses a film feed mechanism (FH) to continuously copy microimages even when a duo-type microfilm (CF) is used. F) 1
Each time a frame is conveyed, the projection frame selection means (FS) described above
A second frame advancing means (FH2) is provided for selecting a frame of one of the channels selected by.

Then, depending on the film type manually selected by the film type selection key (3a) provided on the controller (3), either the above-mentioned first frame advance means (PMI) or second frame advance means (FH2) is selected. By operating one of the frame advance means (FMI or FH2), whether it is a duo type or a duplex type, a plurality of interconnected consecutive images imprinted on the microfilm (F) are The structure is such that microimages can be continuously copied with simple operations.

Furthermore, these two frame feed means (FMI), (F
H2) can also be used to facilitate microimage searches. That is, the frame number etc. of the desired micro image explained earlier is input to the controller (
In addition to the method of inputting data from 3), you can also use microfilm (
While transporting the appropriate amount of F), the user places the screen (4)
), and when the desired microimage appears, release the microfilm CF.
) is also possible.

When performing such a search, when using a duplex type microfilm (F), the microfilm (P) is transported by the first frame feeder (PMI) described above, making the operation easier. This allows you to obtain a projected image with a large magnification, making it possible to perform search tasks smoothly.

Next, a control system (CD) that controls the operation of the microfilm reader printer having the above configuration will be explained.

As shown in Figure 1, this control system (CD) is mounted on the film carrier (2) and the microfilm (
F) A film feed control unit (PC) that controls transport in the longitudinal direction and movement in the width direction, and a controller (3) that sets various operating parameters and instructs the film feed control unit (FC). , and interface (2
8) etc.

The main part of this film feed control section (FC) is composed of a microcomputer (MC).

An output signal from this microcomputer (MC), which is an example of a projection control means, is transmitted to the pair of motors (14) and (15) for transporting the microfilm (F) forward and backward in its longitudinal direction, as described earlier. ) and various output devices (O
D), and a display device (3) that displays the current frame number, etc.
0) is input.

This motor (26) is switched between operating and non-operating by turning on and off the first relay contact (al), and the direction of rotation is changed by switching the second and third relay contacts (Tl) and (T2). is now being carried out. The first relay contact (at) is linked to a first relay (Ryl) that is turned on and off by an output signal from an output port (P4°) of a microcomputer (MC). In addition, the second and third relay contacts (Tl)
, (T2) are interlocked with a second relay (Ry2) that is turned on and off by an output signal from an output port (P41) of a microcomputer (MC).

Microcomputer (MC) input board (PI)
~(Pl,) is connected to the controller (3),
The above-mentioned micro-image search frame numbers, <A-channel>, <B-channel> set by operating each key (3a) to (3c) of the controller (3).
Various parameters such as a channel code specifying which channel to use and other information are input to a microcomputer (MC).

In addition, the signal from the low reencoder (27) described earlier is input to another capo 1-(P3) of this micro combinator (MC). Based on the input signal, the microcomputer (MC) controls the movement stage (2A) of the film carrier (2) in the width direction of the microfilm (F).
It is now possible to obtain information about the current location of.

Furthermore, the two light receiving elements (19a) described earlier.

The output signal from the blip detector (19) consisting of (19b) is input to the mark detection circuit (29), and the signal corresponding to the presence or absence of the blip (M) output from this mark detection circuit (29) is It is input to the input port (PO) of the micro combinator (MC).

The microcomputer (MC) then compares the channel code with the current channel information obtained from the rotary encoder (27).

If they are different, the output signal from the output port (P4o) is set to "H" level and the first relay (Ryl)
is turned on and starts driving the motor (26). At this time, the output signal from the output port (P41) is at the "H" level or "L" level depending on the direction in which the moving table (2A) of the film carrier (2) should move, and the motor (26) is It starts rotating in a predetermined direction.

The microcomputer (MC) uses the information obtained from the rotary encoder (27) to calculate coordinate values on the coordinate axis extending in the width direction of the film (F) corresponding to the current position of the moving table (2A), and calculates the coordinate values on the coordinate axis extending in the width direction of the film (F). If it is equal to the coordinate value corresponding to the specified channel, the moving platform (2
In order to stop the movement of A), set the output signal from the output port (P4°) to "L level".

In addition, as mentioned earlier, the microcomputer (MC) performs count amplification of the film counter (PC) in response to the detection of the blip (M) by the blip detector (19), Based on the comparison with the frame number information, the drive control of the two motors (14) and (15) for transporting the microfilm (F) constituting the film transport mechanism (Fil) is performed. .

Furthermore, this microcomputer (MC) also includes a first frame advance means (FMI) that performs frame advance compatible with the duplex type microfilm (F) mentioned earlier, and a first frame advance means (FMI) that performs frame advance compatible with the duplex type microfilm (F) mentioned earlier. )
A second frame feed means (FM2) that performs frame feed corresponding to
There is.

Next, FIG. 8 shows the copying operation of a plurality of micro images imprinted on a duplex type micro film (F) by the first frame advancing means (FMI) which is an example of the frame advancing means according to the present invention. The explanation will be based on the flowchart of the (duplex copy) subroutine shown in FIG.

This subroutine is executed by operating the film type selection key (3a) provided on the controller (3).
This is called when the print key (3b) of the controller (3) is operated in a state where duplex type microfilm (F) is set to be used.

When this subroutine is called, first, the system waits for input of various parameters from the controller (3). In this state, by pressing the numeric keypad (3c) of the controller (3), the frame number (FN) of the frame to start copying is pressed.
Enter S) and channel code (FFS)11),
Next, the frame number (FNE) and channel code (FFE) of the hexagonal frame whose copying is to be completed are input (lt2). Both channel codes (FFS) and (FREE) are
In the case of (A-channel), [1] is set as the data, and in the case of (B-channel), [2] is set as the data.

Next, by pressing the numeric keypad (3c) of the controller (3), the number of copies data (PN) for each frame is input (113). Next, step (11) and (112
) step and the data entered in (FNS), (F
PS).

(FNE), (FPII is used to set a copy start count value (FCt) corresponding to the copy start frame and a copy end count value (FCF) corresponding to the copy end frame (114).

After that, the channel flag (C
F) is set to "0". 15) Call the subroutine (search process) and search for the copy start frame using the copy start count value (FCt) set in step (Ii4) as the target value. (116), a flowchart of this subroutine is shown in FIG.

When this subroutine is called, first, the frame counter (FCP) is cleared (1101), and then the film advance mechanism (Fll) is operated to move the microfilm (F).
(1102), Blip 0 is started based on the input signal from the mark detection circuit (29) at Vt.
m03) to detect whether or not 'l) has been detected.

If the blip (M) is not detected, the process advances to step (11105), and if the blip (M) is detected, the frame counter (FCF) is counted up twice and then (1t1
Proceed to step 04) and (11105).

In step (1105), the frame counter (FCP)
is compared with the copy start count value (FCt). If the frame counter (PCP) is not equal to the copy start count value (FCF), the process returns to step (1103), and if the frame counter (pc,) is equal to the copy start count value (FCF), the film advance mechanism (PH) is The operation of the microfilm (F) is stopped (1106).

Thereafter, using the channel code (FFS) and channel flag (CF) of the copy start frame, it is determined whether the set channel is A-channel or not. )
.

If the set channel is (B-channel), then the (channel switching) subroutine is called and the moving table (2A) of the film carrier (2) is moved in the width direction of the microfilm (F). , performs a channel switching operation from (A-channel) to (B-channel) (11108). A flowchart of this subroutine is shown in FIG.

When this subroutine is called, first, it is determined whether the current channel is <A-channel> or B-channel> using the channel flag (CF) (1130
1). If the current channel is (A-channel), proceed to step (1311); if the current channel is B-channel>, proceed to step (1321), and each corresponds to a channel different from the current channel. Then, the target value (EG) of the detection data by the low-resolution encoder (27) is determined.

This target value (EG) is calculated from <A-channel> to <B-channel>.
channel), the current data (HA) corresponding to the position of A-channel) is added to the distance between the center lines along the longitudinal direction of the microfilm (F) of both channels (see Figure 4 (11). ) is obtained by adding the movement data (E pieces) corresponding to (ct m) ) (113
11), and when switching from (B-channel) to <A-channel>, the movement data (1
! *) is obtained by subtracting (+1321).

That is, the position corresponding to <A-channel) and (
B-channel> correspond to the coordinates extending in the width direction of the microfilm (F), and the relative positions of the screen (4) and the microfilm (F) are expressed as coordinate data on these coordinates. It is as shown.

When switching from (A-channel) to (B-channel), only the output port (P4°) is set to “H”.
11312) to drive the motor (26) constituting the projection frame selection means (PS) in normal rotation (11312), and read the detection data from the low reencoder (27) (131).
3) Determine whether this data has reached the target value (EG) (11314). This data is the target value (E6)
If it has not reached the target value (E・,), return to step (11312) and continue driving the motor (26) in normal rotation.
When the output port (P4°) is set to "L" level to stop driving the motor (26) (11315), the channel flag (CF) is set to "1" (1131
6), Return.

The step (It108) of the (search processing) subroutine and (duplex copying), which will be explained later,
If this (channel switching) subroutine is called at step (+111) of the subroutine,
This is a switching from <A-channel> to <B-channel>, and as a result of the determination at step (11301), steps from (+1311) to (11316) described above will be executed.

Also, when switching from (B-channel) to A-channel, output port (P4°).

(P2O is set to "11" level and the motor (26) is driven in reverse 1322), and the detection data from the low reencoder (27) is read (1323) and whether this data has reached the target value (E,). Determine (1324)
.

If this data does not reach the target value (EG), (#
Return to step 322) and continue driving the motor (26) in reverse, and when the target value (E, ) is reached, the output port (P4
To stop driving the motor (26), set the channel flag (C12) to "0".
After setting (11326), the process returns.

As will be explained later, if this (channel switching) subroutine is called in step (1117) of the (duplex copying) subroutine, switching from <B-channel> to A-channel> can be,(
As a result of the judgment in step 1301), the above-mentioned (13
Steps from step 21) to step (++326) will be executed.

Returning to the flowchart in Figure 9 and continuing the explanation, after returning from the (channel switching) subroutine, (+
1108), the process returns to the (duplex copy) subroutine. In this state, the center of the frame (PFs) of the <B-channel> coincides with the projection optical axis (L).

On the other hand, if it is determined in step (+1107) that the set channel is A-channel>, the process returns to the (duplex copying) subroutine without performing anything. In this state, the <A-channel> frame (P
The center of the projection optical axis (FA) is offset from the projection optical axis (L).

Returning to the flowchart of FIG. 8 and continuing the explanation, after returning from the (search process) subroutine, the (copy process) subroutine is called (17). A flowchart of this subroutine is shown in FIG.

When this subroutine is called, first, the print counter (PNC), which is incremented by 1 each time a copy is made, is cleared (1201), and then printout is performed in order to start the recording operation. (11202
).

This allows the printing projection optical system (PP) to scan the micro-image projected on the frame (FFa or FF+) of the current channel to form an electrostatic latent image on the photoconductor drum (22) and the photoconductor drum. rotation of the drum (22);
and supplying the recording paper (P) from a paper feeder (not shown) to print out the electrostatic latent image formed on the photoreceptor drum (22) onto the recording paper (P). etc. will be carried out.

Next, count up the print counter (PNC) (+1203).
Copy number data (f) input in step (#3)
'N) (1204).

The print counter (PNC) is the copy number data (PN)
If not, return to step (1202).

and print out again. On the other hand, the print counter (
When the number of copies (PNC) reaches the copy number data (PN), the print output is stopped (+1205), and then the process returns to the subroutine (duplex copying).

To continue the explanation by returning to the flowchart in FIG. 8, after returning from the (copy processing) subroutine, the frame counter (FCP) is counted up by 1 (#8), and this frame counter (FCp) is set to the copy end count value. (FC
Compare with F) (119). If the frame counter (Pct) exceeds the copy end count value (FCF), the process returns to the main routine. If the frame counter (FCF) is still smaller than the copy end count value (FCF), then the current channel is determined based on the channel flag (CF).

If the current channel is (A-channel), then (1
The process proceeds to step 111), calls the subroutine (channel switching), and performs channel switching operation from (A-channel> to B-channel>).The operation of this subroutine is as described above.

On the other hand, if the current channel is (B-channel), proceed to step (1115) and similarly call the channel switching subroutine.
A channel switching operation is performed.

After calling the subroutine (channel switching) in step (1111) and performing channel switching,
Next, call the (copy processing) subroutine (1
112). The operation of this subroutine is as described above.

After returning from this (copy processing) subroutine,
(+18) step Similarly to the steps below, the frame counter (FC,) is counted up by 1 to 1113.
), this frame counter (FCp) is compared with the copy end count value (FCF) $14), and the copy end count value (
FCr), return to the main routine,
If not, the process proceeds to step (lt15), calls the subroutine (channel switching), and switches the channel from <B-channel> to <A-channel).

After calling the subroutine (channel switching) and performing channel switching in step (115), the film feeding mechanism (FH ) After outputting the control signal to (#16), return to step (I7) and (
The micro image imprinted on the next <A-channel> frame (FFA) is called.

In the embodiment described above, a plurality of frames (FFA) are used in a duplex type microfilm (F).
, (FFI), <A-
After copying the micro-image of the frame (CFFA) of <channel>, change the channel and copy the micro-image of the frame (FFI) of <B-channel>, then change the channel again, and then copy the micro-image of the frame (FFA) of ). Alternatively, switching from the <B-channel> to the <A-channel> henochannel and transporting one frame of the microfilm (F) may be performed simultaneously.

Also, for a pair of frames, first copy the micro image of the <A-channel> frame (FFA), and then
- channel), then the microfilm (F) is conveyed one frame without changing the channel, and for the next pair of frames, the B-channel is first copied. It is also possible to copy from the micro-image of the frame (FF, ).

Furthermore, in the previous embodiment, a rotary encoder (27) is attached to the motor (26) that moves the moving base (2A) of the film carrier (2), and the information obtained from this rotary encoder (27) is used to determine the current status. I explained how to determine the channel. Instead of this rotary encoder (27), a combination of a potentiometer and an AD converter may be used, and furthermore, this rotary encoder (27) may be used with the moving stage (2A) of the film carrier (2) positioned in one of the channels. A microswitch that is closed by contact with the moving table (2A) may be provided, and the current channel may be determined by determining the state of this microswitch.

Note that when using a duo-type microfilm (CF) or a duplex-type microfilm (F), the configuration for switching channels is the same as that of the film carrier (2) described in the previous embodiment. Mobile platform (
2A) can be moved relative to the base (2B), various other options are possible. For example, the film carrier (2) is configured to be fixed in the width direction of the microfilm (F), and each mirror (21a) to constitutes the reader projection optical system (RP) and the print projection optical system (PP).
By changing the inclination of (21a) with respect to the projection optical axis (L), the desired projection area of the micro-image on the screen (4) or photosensitive drum (22) may be changed.

In addition, if a single microfilm (F) contains both horizontal and vertical original images, a sensor is installed to detect the orientation of the original image. Depending on the results, it may be configured to perform image rotation using the image rotation prism (20b) of the projection module (20) at the same time as the above-mentioned channel switching and transporting one frame of microfilm.

Furthermore, depending on the type of microfilm (F), a target for type identification is imprinted on the leader film part, and the microfilm reader printer side reads this target and prints the microfilm (F). A sensor is installed to determine the type of
Film type selection key (3a) explained in the previous embodiment
Instead of manually selecting a frame-advancing method for each type using , a frame-advancing method according to the film type may be automatically selected.

In addition to the microfilm reader printer described in the previous embodiment, the present invention also provides a microfilm reader and a screen (4) that do not have the function of copying microimages.
It is also applicable to microfilm printers that do not have. Alternatively, a dedicated device capable of projecting only duplex type microfilm (F) may be used.

Furthermore, the invention may be applied not only to devices intended for microfilm (F) but also to devices intended for other films, and these are collectively referred to as projection devices.

〔Effect of the invention〕

As described above, the film projection device according to the present invention uses a type of film in which the images projected on a plurality of frames lined up in the width direction of the film are continuous and interconnected. In this case, each image can be projected sequentially without breaking the connection.

Therefore, for example, in a microfilm printer, which is a projection device that uses microfilm, which is an example of film, it is possible to copy continuous images extremely easily without having to select each frame one by one. I can now do it. On the other hand, for example, in the Microfilm League, it has become possible to search for successive images by projecting each image individually, thereby obtaining a high magnification and without requiring any troublesome operations.

As a result, the efficiency of tasks such as copying and searching can be improved by continuously projecting continuous images recorded on multiple frames lined up in the width direction of the film without any troublesome operations. Now you can.

[Brief explanation of drawings]

The drawings show an embodiment of the projection device according to the present invention, FIG. 1 is a block diagram of the control system of the microfilm reader printer, FIG. 2 is a front view of the microfilm reader printer, and FIG. 3 shows the inside of the film carrier. A perspective view showing,
Figure 4 is a plan view of three types of micro soil rem (numbers 1 and 8 without parentheses), Figure 5 is a perspective view showing the positional relationship between the blip detector and the microfilm, and Figure 6 is the microfilm. Schematic diagram of the optical system of the reader printer,
7(a) to 7(a) are front views showing the positions of frames on the screen, and FIGS. 8 to 11 are flowcharts showing copying operations by the microfilm reader printer. (F)...Film, (FFA), (FFyo)
......Frame, (Fil)...Film feeding mechanism, (FS)...Projection frame selection means, (R
P), (PP)...Projection optical system, (L)...
...Projection optical axis, (FMI) ...Frame feed means, (FM2) ...Second frame feed means, (M
C)...Projection control means.

Claims (2)

[Claims] (1) Equipped with a projection optical system that projects an image imprinted on a film, and a film transport mechanism that transports the film in its longitudinal direction, the center of each of a plurality of frames lined up in the width direction of the film is In a film projection apparatus provided with a projection frame selection means for selectively matching the projection optical axis of the projection optical system, each time the film is conveyed one frame by the film transport mechanism, the projection frame selection means selects a projection frame in the width direction of the film. A film projection device provided with a projection control means having a frame advance means for sequentially selecting frames in a row. (2) a second frame in which the projection control means selects a frame located at a specific position in the width direction of the film from among a plurality of frames lined up in the width direction of the film each time the film is transported one frame by the film feeding mechanism; A film projection apparatus according to claim (1), which is equipped with a frame feeding means.