JPS63202730A - Film projector - Google Patents

Abstract

PURPOSE:To prevent a retrieval mark from exiting from a lighting area by moving a film breadthwise and detecting the retrieval mark provided to a side of a frame, and expanding the lighting area when deciding plural breadthwise frames. CONSTITUTION:Light from an exposure lamp 22 is controlled by a condenser lens 36 to illuminate the film F. An image imprinted on the film F is enlarged by a projection module 37, reflected by mirrors 38a-38e, and projected on a screen 1 in reader mode or recorded on recording paper P on a copying mechanism 68 in print mode. At this time, the film F is moved breadthwise so as to decide whether or not there are plural frames in the breadthwise direction of the film F; and a sensor detects retrieval marks provided to the sides of the frames of the film F to decide the number of the frames. At this time, the condenser lens 36 is moved as shown by an arrow G to expand the lighting area. Thus, the control is performed so as to expand the lighting area, so even when the film is moved breadthwise, no retrieval mark exits from the light area and information retrieval is accurately performed.

Description

[Detailed Description of the Invention] Blood Chestnut Top ■Kuri Kodan The present invention is a microfilm league or microfilm that allows you to search for desired information by searching for search marks provided on the sides of each frame of the film. The present invention relates to film projection devices such as printers.

'r and its mouth In the film projection value Wl of conventional microfilm leagues and microfilm printers, a film with a search mark provided on the side of each frame of the film is used, and the search mark is optically detected. A desired frame in the film is automatically searched by counting the number of frames.

Incidentally, there are three types of typical films used in the film projection apparatus as shown in FIGS. 18(a) to 18(c).

As shown in FIG. 18(A), the first film has one frame FF formed in the width direction of the film F, and one image is formed on this one frame FF. is imprinted thereon, and a search mark M is provided on one side of each frame FF. This type of film is commonly referred to as a simbrex film.

As shown in FIG. 18(B), the second film is divided into two columns along the longitudinal direction of the film F, and search marks M are formed on both sides of the film F. It is something that This type of film is usually called a duo film, and of the two divided columns, one column is called A channel C' and the other column is called B channel C8. This duo film is produced by imprinting continuous images on each frame FFA of the A channel CA, and then
, and each piece FF of the B channel C1.

By imprinting another continuous image on the image, it is possible to search for a plurality of consecutive images that are connected to each other.

As shown in FIG. 18(C), the third film is divided into two columns along the longitudinal direction of the film F, and a search mark M is formed on one side of the film F. It was formed. This type of film is usually
It is called a duplex film and has an A channel C1 and a B channel C3 like the above-mentioned duo film. This Tenney Brex film has FFA, which consists of multiple consecutive images that are connected to each other.

FFi, FFA, FFs... are printed in this order.

When the film F is irradiated with a light source such as an exposure lamp, an illuminated area is formed as shown in FIG. 19, and the illuminated area is projected onto the screen as a projected image.

In this case, in the case of simplex film, one frame FFL, Kana (one frame FFL, Kana) in the width direction of film F (the center CO of film F (see Figure 18 (a)) coincides with the center on the screen, and no problem occurs. , in the case of duo film or duplex film, two pieces FFA in the width direction,
Since it has FFI, there are two image centers (Fig. 18 (
b), ′(c)) exist, and the following problems arise. That is, in the case of duplex film, for example, it is normally projected onto a screen with the illumination area shown in FIG. If you want to project the image, it is necessary to move the film F in the width direction so that the center of the image of frame FF+i coincides with the center of the screen, and then enlarge and project the image.

However, when the film F is moved in the width direction in this way, the dashed line shown in FIG. 20 becomes the illumination area, so the search mark M on the film F moves out of the illumination area, causing trouble in information retrieval. A problem arises.

The present invention solves these conventional problems and provides a film that does not cause any trouble in information retrieval even if the film moves in the width direction when there are multiple frames in the width direction of the film. The purpose is to provide a projection device.

In order to achieve the above-mentioned object of 5 fortune-telling, the film projection device of the present invention includes a film transport mechanism that transports the film on which the search mark is formed on the side of the frame in the longitudinal direction, and a film transport mechanism that transports the film in the width direction. A film moving mechanism that moves, a projection optical system that projects an image imprinted on the film, a determining means that determines whether or not a plurality of frames exist in the width direction of the film, and illumination of the film. and control means for changing the area, and in a state where the determination means determines that there are a plurality of frames in the width direction of the film, the control means controls to expand the illumination area of the film. The gist is that.

According to the above structure, when the determining means determines that there are multiple frames in the width direction of the film, the control means controls to expand the illumination area of the film, so that the film It is possible to obtain a film projection device in which the search mark does not come out of the illumination area even if the search mark is moved in the width direction.

Implementation - Implementation Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 2 shows a reader printer as an example of a film projection device according to the present invention, in which a reader printer main body 2 having a screen 1 in the center and a film F on which a number of images are imprinted are conveyed in the direction of arrow X. Film carrier section 3
and a control section 5 which is connected to the film carrier section 3 via a cable 4 and controls the film transport speed, etc.
It consists of The league printer also includes a projection optical system 6, and is configured to be switchable between a reader mode in which an image is enlarged and projected onto the screen 1, and a print mode in which the image is enlarged and copied onto recording paper.

FIG. 3 is a perspective view showing the film carrier section 3, including a film feeding mechanism 7 that transports the film F in the longitudinal direction (indicated by arrow X), and a film transport mechanism 7 that transports the film F in the width direction (indicated by arrow Y). A film moving mechanism 8 is provided.

Specifically, the film feeding mechanism 7 includes a first motor 10 rotating in the direction of arrow A, a rotating shaft 11 connected to the first motor 10 via a pinion 9. A supply reel 13 housed and detachable from the rotating shaft 11, a second motor 15 rotating in the direction of arrow B, and a winding reel connected to the second motor 15 via a pinion 14.14. a light irradiation unit 18 which is composed of a pair of upper and lower glass plates 17a and 17b and which holds the film F therebetween, an appropriate number of guide rollers 19 which guide the conveyance of the film F, and a delivery belt 20. and,
# Consists of a separation belt 21. Further, the light irradiation section 18 is
When the film carrier section 3 is assembled into the league printer main body 2, the film F is configured so that the projection light axis from the exposure lamp 22, which is an example of a light source, is aligned with the center of the film F.

23 is a moving table on which the film transport mechanism 7 is mounted.

In the film feeding mechanism 7 configured in this way,
The cartridge 12 containing the supply reel 13 is mounted on the rotating shaft 1.
1, the supply reel 13 is moved instantaneously to arrow C.
Rotate in the direction. This is to remove the slack in the film F wound around the supply reel 13.Next, the delivery belt 20, which is interlocked with a delivery motor (not shown), is brought into contact with the film F, and the supply reel 13 is rotated in the direction indicated by the arrow. , the leading end of the film F is pulled out via the peeling belt 21.

Thereafter, by driving the feed motor, the leading edge of the film F is moved to the guide rollers 19 and the light irradiation section 18.
The film passes through the gap between the pair of glass plates 17a and 17b constituting the film, and is wound onto the take-up reel 16. Thereafter, the delivery belt 20 and the peeling belt 21 are separated from the film F, and the film F is separated from the pair of glass plates 17a and 1.
7b. Thereafter, the first motor 10 is appropriately driven to advance the film F, and the second motor 15 is driven to retract the film F, either in the forward or reverse direction. The film 74 can be conveyed in any direction.

Therefore, the film moving mechanism 8
, a base 25 having a substantially gate-shaped cross section that is slidably fitted onto a table 24 fixed to the league printer main body, and a third motor 27 with a pinion 26 pivotally supported and provided on the movable table 23. and a rack 2 which is fixed to the base 25 and meshes with the pinion 26. In addition, the moving table 23 has three long holes 29a, 29b,
, 29c are formed. The rack 28 is held in a state exposed to the movable table 23 by the elongated hole 29c, and guide pins 30a and 30b whose tips are fixed to the base 25 are engaged with the elongated holes 29a and 29b. As a result, the movable table 23 and the base 25 are connected. Furthermore, a rotary encoder 31 is attached to the third motor 27, and by making the third motor 27 capable of forward and reverse rotation, the moving table 23 is moved in the width direction of the film F with respect to the base 25. and the third motor 2 can be controlled by the rotary encoder 3.
7 is output as an electrical signal, and the relative position between the moving table 23 and the base 25 is detected via a film moving mechanism control section, which will be described later. In addition, in consideration of the case where a duplex film is used, the film moving mechanism 8 is equipped with a frame feeding means that sequentially selects and projects the two frames FFa and FFi lined up in the width direction of the film F. has been done.

A search mark sensor 32 is provided on the surface of one of the glass plates 17a constituting the light irradiation section 18. As shown in FIG. 4, the search mark sensor 32 includes two light-receiving elements 33 facing each other with a film F in between.
a, 33b, and the light receiving element 33 via the cable 34.
a, 33b, and a search mark sensor body 35 connected to the search mark sensor body 35.

Further, a reference voltage (reference value) for detecting the search mark M is preset in the search mark sensor main body 35. In the search mark sensor configured in this manner, for example, as shown in FIG. 4, the duplex film is conveyed in the direction of the arrow
When the search mark M intercepts the search mark M, the light receiving element 33a detects a change in the received light intensity, and then this change in the received light intensity is converted into a voltage. When the voltage is higher than the reference voltage, the search mark sensor main body 35 is activated and detects the search mark M. and the search mark sensor 32
A film counter (not shown) is incremented each time a search mark M is detected, and the frame FFA (
or FFB) is searched. Although not shown in the drawings, it goes without saying that in the case of a duo film, the search marks M of the A channel CA and the B channel C6 are detected by both the light receiving elements 33a and 33b.

FIG. 5 is a diagram schematically showing the outline of the projection optical system 6. As shown in FIG. That is, the projection optical system 6 includes the exposure lamp 22 and a condenser lens 36 (which moves in the direction of the arrow G as appropriate to change the illumination area of the film F via a drive means to be described later).
(hereinafter referred to as "C lens"), the above-mentioned light irradiation unit 18 that holds the film F, a projection module 37, and a plurality of mirrors 38a to 38e. Further, the projection module 37 includes a P lens unit 42 in which a projection lens 39 (hereinafter referred to as "P lens") for enlarging the image on the film P is housed, and a ladder-shaped image rotation prism 40. When the image on the film P is projected sideways or upside down, the image rotating prism 40 is rotated in the direction of arrow E by operating a push button switch (not shown) to rotate the film image on the screen 1. This is for projecting an erect image on the screen.

In such a projection optical system 6, in the reader mode, the image of the film F irradiated via the exposure lamp 22 and the C lens 36 passes through the projection module 37, and is transferred between the first mirror 38a and the second mirror. The image is enlarged and projected onto the screen 1 via the third mirror 38b and the third mirror 38c. In the print mode, the second mirror 38b is rotated in the direction of arrow F, and the image that has passed through the projection module 37 passes through the first mirror 38a, the fourth mirror 38d, and the fifth mirror 38e. , is enlarged and copied onto the recording paper P via the copying mechanism 68. That is, the copying mechanism 68 is comprised of a well-known electrophotographic process such as a photosensitive drum 41 and a charging device (not shown), a developing device, a transfer device, a cleaning device, a static eliminating device, etc., and the film image that has passed through the mirror 38e is exposed to light. An electrostatic latent image is formed on the body drum 41, and then an enlarged copy of the film image is formed on the recording paper P through the electrophotographic process described above.

FIG. 6 shows a perspective view of the P lens unit 42 constituting the projection module 37. 43 is a mounting plate that holds the P lens 39 in an externally fitted manner; 44 is a P lens identification sensor that recognizes the magnification of the P lens 39; The P lens identification sensor 44 includes three photointerrupters 45 a, 45 b, and 45 c that are a combination of a light receiving element and a light emitting element.
Consists of. Further, the mounting plate 43 has cutout-like uneven portions 46a, 46b, and 46c formed on one end edge thereof. The magnification of the P lens 39 is recognized by the combination of the photointerrupters 45a, 45b, 45c and the uneven portions 46a, 46b, 46c of the mounting plate 43, and is appropriately controlled by a control mechanism to be described later.

7 and 8 are diagrams showing a C lens driving means 48' for moving the C lens 36 in the direction of arrow G. The C lens driving means 48 includes a pulse motor 49 fixed to a base 47, a pinion 50 pivotally supported by the pulse motor 49, and a rack 5 meshing with the pinion 50.
1, a holder 53 that holds the C-shins 36 and fixes the rack 51 via the first support member 52;
The holder 53
It consists of a running element 57 fixed to. One end of the holder 53 is slidably supported by a shaft 55 via a sliding bearing 54 via the first support member 52, and the other end of the holder 53 is supported via a second support member 56. It is made to be able to run freely on the base 47 by the running element 57. Above C
The lens driving means 48 is configured as described above, and by driving the pulse motor 49 to perform forward rotation or reverse rotation by a predetermined amount, the C lens 36 held by the holder 53 moves forward in the direction of arrow G. It is said that they can retreat freely.

FIG. 9 is a block diagram showing the control system of the reader printer of this embodiment. 58 is a CPU, which includes an arithmetic unit and a ROM.
, RAM, I10 port, etc. Reference numeral 59 indicates a key manual section, in which parameters such as scan mode setting, search mode setting, number of copies, search target frame, etc. are manually input. The key human power section 59 is an example of a determining means that can determine whether or not a plurality of frames exist in the width direction of the film F, and includes:
By selecting the search mode setting, it is possible to manually determine whether the film is a duplex film that needs to be moved in the width direction or a simplex film that does not need to be moved in the width direction. Also, to distinguish between simplex film (or duplex film) and duo film, the frame format of film F is different.
This can be automatically determined using a control mechanism that will be described later. The scan mode is used to set whether to prohibit or permit movement of the film F in the width direction. Reference numeral 60 denotes a display section on which the number of copies, frame number, etc. are displayed.

The light from the exposure lamp 22 that has passed through the film Ffc is received by the light receiving element 33a and/or 33b, and the amount of light transmitted through the film is converted into voltage by the photoelectric conversion element of the search mark sensor 32 as described above. The search mark sensor 32 detects the change in voltage caused by the passage of the search mark M, and inputs the detection signal of the search mark M of the A channel CA and the B channel C6 to the CPO 58 via the search mark detection section 61. In addition, the P lens identification sensor 44
When irradiated with light, the photointerrupter 45a.

45b and 45c are uneven parts 46a and 46b of the mounting machine 43,
46c is read, the magnification of the P lens 39 is recognized, and the electrical signal is sent to the CPU 5 via the P lens identification section 62.
Make it 8. On the other hand, from the key human power section 59 to the CPU 5 B
Parameters such as scan mode settings are input to the copy process control section 63. from the CPU 5B. C lens driving means control section 64, exposure lamp illuminance control section 65. Control signals are transmitted to the film transport mechanism control section 66 and the film movement mechanism control section 67, respectively.

The C lens drive means control section 64 is an example of a control means that is a feature of the present invention, and drives the pulse motor 49 as desired according to information from the CPU 58 instructing the position of the C lens 36. Move the camera to the C lens position. That is, in the reader mode, the illumination area of the film F is controlled so that the search mark M does not deviate from the illumination area even when the third motor 27 of the film moving mechanism 8 is driven and the film F is moved in the width direction. The position of the C lens is set in the direction of magnification. Furthermore, in this embodiment, in print mode, the C
The C lens driving means 64 is configured to move the lens.

Further, the exposure lamp control section 65 controls the light amount of the exposure lamp 22 using a well-known phase angle power control method according to information indicating the light amount from the CPO 58. The copying process control unit 63 controls the copying machine in response to instructions from the CPO 58! 168 to perform copying operations. The film feed mechanism control section 66 controls the first motor 10 and the second motor 15 based on information from the CPU 58 instructing the transport speed, transport direction, etc., and moves the film F forward and backward. The film moving mechanism control section 67 drives the third motor 27 (see FIG. 3) in accordance with information indicating the film projection position from the CPO 58. Further, a display command such as the number of copies is transmitted from the CPU 5B to the display section 60, and a predetermined display is performed.

Next, the control procedure of this embodiment is shown in FIGS. 1 and 10 to 16.
A detailed explanation will be given based on the flowchart shown in the figure. Note that the flags used in these flowcharts are defined as shown in Table 1.

[Margin below]

Figure 1 is a flowchart showing the overall control procedure of this embodiment.

Steps (Sl) to (S4) show the initial setting state. In other words, by setting (ENB) to "0", the scan prohibition mode is set and Sl), (BC
By setting NT) to "0", the counter that counts the number of B channels is set to "0", and by setting (DUO) to "0", the mode is set to non-duo film (S2). Next, by setting (MODE) to "0", the simplex/duo search mode is entered (S3), and the power is turned on. Next, enter the initial value of the number of pieces for A channel and B channel manually (S4)
, load the film and output the frames (S5)
, and then enters into concrete control.

First, it is determined whether or not (ENB) = O, that is, whether there is a possibility that the film will move in the width direction.
If )=O, proceed to route A; if (ENB)=1, proceed to route B. When proceeding to route A, first execute the subroutine for C lens processing 1 (S7), then execute the subroutine for exposure lamp processing 1 (S8),
Thereafter, it is determined whether there is a print request (S9).

This route A is controlled so that the C lens 36 is optimized for copying by C lens processing 1 (C lens driving means control section 64) and exposure lamp processing 1 (exposure lamp control section 65).
The position of the exposure lamp 22 and the illuminance of the exposure lamp 22 are set. Specifically, as shown in FIG. 10, the C lens processing 1 reads the magnification of the P lens 39 attached to the projection optical system 6 via the P lens identification sensor 44 (S71);
The electrical signal is input to CPO58. Then the CPO
The C lens driving means 48 is driven in accordance with the information from the P lens 39, and the C lens is moved to the optimum position for copying according to the magnification of the P lens 39 (S72), and the process returns (3).
73). In other words, even if the copy size is the same A4 size, the copy area of the film will be different if the magnification of the P lens is different, but in this example, if the magnification of the P lens is large, the position of the C lens is set in a direction that narrows down the magnification of the P lens. The position of the C lens is set so that the illuminance of the copying area of the film is uniform.

Further, the above-mentioned exposure lamp processing l is as shown in FIG.
The magnification of the P lens 39 is read (S82) in the same manner as the step (S71) of C lens processing 1, and then the light amount is set by the exposure lamp control section 65 (S83).

That is, the position of the C lens differs depending on the magnification of the attached P lens, and therefore the illuminance of the copy area also changes.

On the other hand, if (ENB)=1 in step (S6), the flow of route B is proceeded. In this case, the mode is scanning permission mode, that is, the mode in which the film can be moved in the width direction. The subroutine of process 2 is executed (5ll), and then it is determined whether there is a presit request (S9). If it is determined that it is a simplex film, there is no need to move the film in the width direction despite the scan permission mode, so proceed with the flow of (S7) → (S8) - (S9) in the same way as route A above. . In other words, this rule) B constitutes an example of a discriminating means for determining whether or not there are multiple frames in the width direction of the film, and as described above, there are multiple frames in the width direction of the film. C only if it is determined that the film is a duplex film or a duo film.
Lens processing 2 and exposure lamp processing 2 are executed. Then, the C lens 36 is adjusted so as to be optimal for searching the search mark M by this C lens processing 2 and exposure lamp processing 2.
The position of the exposure lamp 22 and the illuminance of the exposure lamp 22 are set.

Specifically, the above C lens processing 2
The lens driving means 48 is driven, and as shown in FIG.
The C lens is moved and set to the optimum position for detecting the search mark M without depending on the magnification of the attached P lens (SIOI).

In other words, normally, the larger the magnification of the P lens, the narrower the illumination area of the film, and if the film is moved in the width direction, there is a risk that the search mark M will go outside the illumination area, but even if the film is moved in the width direction, In order to prevent the search mark M from leaving the illumination area, the C lens 36 is used regardless of the magnification of the P lens.
By setting the optimum position of the search mark M, it is possible to detect the search mark M.

Further, in the exposure lamp processing 2, as shown in FIG. 13, the exposure lamp control section 65 sets the illuminance to be optimal for searching for a film (S111). That is,
When the film F is moved in the width direction, the illumination area is expanded to include the movement range by the C lens processing 2 (SIO), regardless of the magnification of the P lens 42.
Expanding the illumination area usually reduces the illuminance at the film surface.

Therefore, in this exposure lamp processing 2 (Sll), the P lens 3
The illuminance of the illumination area is improved regardless of the magnification of 9, so that no trouble occurs in the search. Specifically, the illuminance of the exposure lamp 22 is adjusted by appropriately adjusting the voltage of the exposure lamp 22.

After the C lens 36 and the exposure lamp 22 are set optimally for copying processing or search mark M detection in this way, predetermined copying processing, search processing, etc. are performed. Next, these control procedures will be explained in detail.

Print processing, search processing, scan mode change processing,
If none of the search mode changing processes is requested, the process returns to step (S6) through the flow of (S9)→(S12)→(313)-(S14).

When there is a request to change the search mode, for example, to change the simplex/duo search mode to the duplex search mode, the process proceeds to the flow of route 1 from step (S14). In other words, in this case, the duplex search mode can be changed manually (515),
Next, check whether you are in duplex mode or not.5
16) If it is detected that it is a duplex film, it sets (MODE) to "1" (517) and returns to step (S6). If you want to search for a film other than Duplex film, manually set the film mode (515), confirm that it is not a Duplex film (S16), set (MODE) to "0" (318), and step (318). Return to S6). This route 1
shows an example of a determining means for determining whether or not a plurality of frames exist in the width direction of the film F.

If there is a request to change the scan mode, (S9) - (
Proceed as S12) → (S13), and this step (S13)
Proceed to route 2 flow. That is, for example, if it is desired to change the scan prohibition mode to the scan permission mode, the scan permission mode is manually activated (S19). Next, check whether the mode is scan permission mode (520).
Set (ENB) = 1 for scan permission mode (521), and (ENB) = 0 for scan prohibition mode.
522) and returns to step (S6). This scan mode changing process is performed by the film moving mechanism control section 67.

If there is a request for search processing, the flow of route 3 is proceeded from step (S12). That is, when there is a search request, first enter the search target frame number (TN) manually (523), then enter the search process subroutine (S24) and the film scan process subroutine (S24), which will be described later.
After executing step S25) and projecting a predetermined image on the screen, the process returns to step S6. This search request processing is processed by the film feeding mechanism control section 66 and film movement mechanism control section 67.

If there is a print request, the process proceeds to route 4 from step (S9). In other words, when there is a print request, first manually enter the desired number of copies by pressing the 526 key.
), the C lens processing 1 subroutine is executed in the same manner as the flow shown in FIG. 10, and the position of the C lens is set to be optimal for copying (S27). This C lens processing 1 is always executed when printing is performed in any case. Next, a copy processing subroutine is executed (328), and the process returns to step (S6).

Note that after C lens processing 1 (S27), it is necessary to perform exposure lamp processing 1 similar to step (S8), but in this embodiment, this exposure lamp processing 1 is included in the copy processing (328). . Note that this printing process is performed by the copying process control section 63.

Therefore, in the above search process, the piece number of the A channel or the piece number of the B
This is done by matching the frame number of the channel with the search target frame number. FIG. 14 is a flowchart showing the control procedure for search processing. First, when the search processing subroutine is called (324), it is checked whether the frame number of the A channel is the frame number for the purpose of search (3201). And if the piece number of A channel is the same as the piece number for search purpose, A
Set the channel as the search end channel S202), the first
and stop the second motor 10.15 (see Figure 3),
Stop the film (S203) and return (S
204). If the A-channel piece number and the search-purpose piece number are different, it is checked whether the B-channel piece number is equal to the search-purpose piece number (3205).

If the piece number of the B channel and the piece number for the search purpose are the same, the B channel is set as the search end channel and 520
6), then proceed through the same flow (S203) to (S204) as described above.

Next, if neither the A channel nor the B channel is the piece number for the search purpose, it is first checked whether the piece number of the A channel is larger than the piece number for the search purpose (S207).
). If the frame number of the A channel is larger than the frame number to be searched, 1AN)>(TN)) searches for the frame number to be searched by proceeding through the flow of route 5 and retracting the film. On the other hand, if the frame number of the A channel is smaller than the frame number to be searched for, the search is performed on the B channel side.

That is, it is checked whether the frame number of the B channel is smaller than the frame number for search purpose ((BN)<(TN)) (320B). The search mark M is present on the B channel only in the case of Duo film, and as mentioned above, the Duo film is continuously imprinted with the A and B channels reversed, so ((BN)< (T
In the case of ((AN) >(TN)''), the frame number to be searched for is searched by passing through the flow of route 5 and retracting the film. , first output the film return output 5209),
Next, it is checked whether there is a search mark M on the A channel (S210). If there is a search mark M on the A channel, (AN) is set to ((AN)-1) and the film is moved back one frame (S211).

Also, in step (S210), the search mark M is placed on the A channel.
If there is no search mark M, a check is made to see if there is a search mark M on the B channel (S212). If there is no search mark M on the B channel, the process returns to step (S201). If there is a search mark M on the B channel, (B
N) is set to ((BN)+1) (5213), then (BCNT) is set to ((BCNT)-1) to move the film back one frame (5214), and the process returns to step (S201). Note that the film return output in step (S209) is performed by driving the second motor 15 (see FIG. 3).

Also, if the A channel's piece number is smaller than the piece number for the search purpose ((AN) <(TN)') and the B channel's piece number is larger than the piece number for the search purpose ((BN)
>(TN)") performs a search by advancing the frame in the film advance direction. In other words, it issues a film advance output (5215), and then follows the steps shown in the flowchart (3216) - (3217) → (3218). →(S
219)→(S220), etc. Thereafter, the subroutine "rBCh check to reconfirm that this film is a duo film" is executed (3221), and the process returns to step S201. Incidentally, the film feed output in step (S215) can be performed by driving the first motor 10.

This process is repeated until the frame number on the A channel side or the B channel side matches the frame number for the search purpose. That is, (S201)→(S202)→(3203)−(S
204) or (205) → (3206) → (S203
)→(S 334), the search operation is repeated.

FIG. 15 is a flowchart showing a subroutine of the above-mentioned "rBCh check", which determines whether the film used is a duo film. That is,
When the "rBC'h check" subroutine is called, it first checks whether the number of search marks on the B channel is 10 or more (
(BCNT)≧10) is checked (S222).

If (BCNT)<10, it is determined that it is not a duo film, and the process returns (S224). Further, when (BCNT)≧10, it is determined that the film is a duo film, (DUO) is set to “1” (S223), and the process returns (S224).

FIG. 16 shows a subroutine flowchart of the film scanning process (S25) in FIG. 1. When this subroutine is called, it is first checked whether scanning is permitted (S301). If scanning is not permitted, output a scan neutral output on the screen (5302) and return (
3303). In this case, the image is projected so that the center of the screen and the center of the film F coincide. If scanning is permitted, it is checked whether the search mode is simplex/duo search mode (3304). If you are in simplex or duo search mode, check whether it is a duo film (5305); if it is not a duo film, it is a simplex film, so only one image is imprinted on one frame of film F. 530 without generating scan neutral output.
2), return (S303). Also, in case of duplex search mode or duo search mode, check whether the search end channel is channel A.
306), in the case of the A channel, outputs the scan A channel output (S307), and returns (S303).

In this case, the film image projected on the 'A channel is projected so that its center coincides with the center of the screen.

On the other hand, if the search end channel is not the A channel, that is, if the search end channel is the B channel, the scan B channel output is generated (5308), and the process returns (S30).
3). In this case, the film image projected on the B channel is projected so that its center coincides with the center of the screen.

FIGS. 17A to 17C show examples of projected images when film F is projected onto the screen 1 of the league printer configured as described above. That is, usually the dimension dv of the simplex film piece FFO in the width direction
is set to a magnification so that it is approximately equal to the vertical dimension [)v of the screen 1. Each frame FF of the simplex film is moved to the moving table 23 of the film carrier section 3 (see FIG. 3) so that the center line CO along the longitudinal direction of the film coincides with the center line C3 of the screen 1. ) is positioned and projected as shown in FIG. 17(a) (scan neutral output).

Furthermore, if a Duo film or a Duplex film is used in this state, a pair of pieces FFA and FF existing in the width direction of the film F, as shown in FIG.
The two film images respectively imprinted on I are projected side by side on the screen 1 above and below.

Therefore, in this league printer, by changing the magnification of the P lens, it is possible to enlarge and project the A channel or the B channel together with the search mark M onto the screen 1. That is, when using Duo film and Duplex film, the entire moving stage 23 of the film carrier section 3 is moved in the width direction of the film F by the film moving mechanism 8 to change the relative position between the film F and the screen 1. In addition, as mentioned above, the film F
The C lens is set to move so that the illumination area of
As shown in FIG. 17(c), the entire frame (FF or FFm) of either channel can be projected onto the screen 1 along with the search mark M.

As can be seen from the example of the league printer above, the film projection device of the present invention controls the position of the C lens so that the search mark M does not deviate from the illumination area even if the film F moves in the width direction. This turned out to be extremely convenient, and we were able to achieve our intended purpose.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that the design can be changed within the scope of the invention. For example, whether a plurality of frames exist in the width direction can also be determined by writing a bar code or the like on the leading edge of the film F. Also, by providing multiple C lenses, C
It is also preferable to use a lens group, some of which are moved in the direction of the projection optical axis, and controlled continuously. Further, in this embodiment, the film is automatically moved in the width direction, but it may be moved manually.

As described in detail above, the film projection device of the present invention expands the illumination area of the film in a state where the discrimination means determines that there are a plurality of frames in the width direction of the film. Since the control means for controlling the
Even if the film is moved in the width direction, it is possible to prevent the search mark from moving out of the illumination area, which is advantageous in information retrieval processing.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing the overall control procedure of a reader printer as an embodiment of the present invention, FIG. 2 is a front view of the reader printer, FIG. 3 is a perspective view showing the film carrier section, and FIG. FIG. 5 is a perspective view of the search mark sensor, FIG. 5 is a diagram schematically showing the projection optical system, FIG. 6 is a perspective view of the projection lens identification sensor, FIG. 7 is a plan view of the C lens driving means, and FIG. The figure is a front view of Fig. 7, Fig. 9 is a block diagram showing the control system of the reader printer, Fig. 10 is a flowchart of C lens processing 1, Fig. 11 is a flowchart of exposure lamp processing 1, and Fig. 12. is a flowchart of C lens processing 2, FIG. 13 is a flowchart of exposure lamp processing 2, FIG. 14 is a flowchart of search processing,
Figure 15 is a flowchart of "Bch check", Figure 16 is a flowchart of film scanning processing, Figures 17 (a) to (c) are projection images projected on the screen, and Figure 18 (a). Figure 18 (b) is a plan view of the simplex film, Figure 18 (b) is a plan view of the duo film, and
Figure 8 (c) is a plan view of the duplex film, the first
FIG. 9 and FIG. 20 are explanatory diagrams for explaining the conventional problems. 6... Projection optical system, 7... Film feeding mechanism, 8...
...Film moving mechanism, 59...Key manual section (discrimination means), 64...C lens drive means control section (control means)
, F... Film, M... Search mark. Patent applicant: Minolta Camera Co., Ltd. Figure 2, Figure 4, Figure 7, Figure 8, Figure 10, Figure 1, Figure 12, Figure 13, Figure 15, Figure 16 (a) FF Figure 17 (b) ( C) M Kano A Figure 18 (B) Figure 19 Figure 20

Claims (1)

[Claims] (1) A film feeding mechanism that transports the film with search marks formed on the sides of the frame in the longitudinal direction, a film moving mechanism that moves the film in the width direction, and a projection that projects the image imprinted on the film. an optical system, a determining means for determining whether or not a plurality of frames exist in the width direction of the film, and a control means for changing an illumination area of the film; A film projection device characterized in that, in a state where it is determined that there are a plurality of frames in the width direction, the control means controls the illumination area of the film to be expanded.