JPS6358339A - Information recorder - Google Patents

Abstract

PURPOSE:To reduce the size of an information recording device and to speed up its operation by forming a sensor group which detects an image area on an information recording medium and a slit for exposing an image carrier in one structure and making the movement range in image area detection different from that a in exposure. CONSTITUTION:Image information on a microfilm F is projected on a screen 9 with light from a light source 1 through a reflecting mirror 2, lenses 3 and 4, and reflecting mirrors 5-8. When the image information is recorded, scanning mirrors 10 and 11 are moved in a direction R to enter an optical path A. In such a case, an optical path B is formed with light reflected by the scanning mirrors 10 and 11. The range of the image is detected by a slit base 13 where the slit 14 and photosensor group 15 are incorporated in one body and shutter plates 16 on the shutter base 17 are moved to shield an unnecessary area. Then the slit 14 of the shutter base 13 is moved to right under the slit 18 of a shutter substrate 17 to expose the photosensitive drum 12. Thus, the size is reduced and the operation is speeded up.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an information recording device capable of detecting an area corresponding to an image on an information recording medium such as a microfilm and controlling the recording area in accordance with this area. .

(Prior Art) Conventionally, this type of device has a slit on the side of a slit for exposing a microfilm image to a photosensitive drum 7.
An optical sensor is provided along the length F direction of the slit, and the area corresponding to the image is detected by the sensor to control the recording area.

(Problems to be Solved by the Invention) However, such prior art has the following problems. That is, in order to make the device smaller and faster, the exposure area of the scanning stage F, which scans and exposes the image on the microfilm onto the photosensitive drum, is limited so that the image is scanned and exposed only to the slit. Therefore, the entire image area is not necessarily exposed to light on the sides of the slit, and the mounting position of the optical sensor is extremely limited, or the image area cannot be detected [5].
There was one issue. To solve this problem, if the mirror on the right side of the first scanning stage is made larger than the area necessary for exposing the photosensitive drum, and the area that can be detected by the optical sensor is expanded, the cost will increase and There was a problem in that it led to an increase in the size of the device.

Tree grove [51] was developed to solve the problems of the prior art described in L, and its purpose is to reduce the size of the device by reducing restrictions on the mounting position of the detection means. It is an object of the present invention to provide an information recording device that is capable of responding to higher speeds of the device.

(First stage for solving the problem) In order to achieve the objective described in "-", the present invention detects an area corresponding to an image on an information recording medium in a first stage of detection, and detects an area corresponding to this area. In an information recording apparatus that controls an area to be slit exposed on an image carrier by one scanning stage and records an image in a predetermined area,
The r-detection stage is arranged to be movable integrally with the exposure slit, and the movement range of the L-detection r-stage and the exposure slit is made different between when detecting an image area and when exposing. .

(Function) In the Suekan 1 sword, by changing the movement range of the detection means and the exposure slit between the time of image area detection and the time of exposure, when changing between the time of image area detection and the time of exposure,
Detection and exposure of one image area can be reliably performed by slightly moving the detection stage and the exposure slit.

(Example) The present invention will be explained below based on the illustrated embodiments.

FIG. 1 shows a microfilm reader printer as an embodiment of an information recording device according to the present invention.

In FIG. 1, F is a roll of microfilm as an information recording medium, 1 is a projection lamp, 2 is a reflecting mirror, 3 is a condenser lens, 3a is an insulating glass, 4 is a projection lens, 4a is a prism, 5, 6, 7.8 is a reflecting mirror, and 9 is a projection screen. Also, 10.11 is T ini 90
12 is a photosensitive drum; 17 is a shutter base disposed on one side of the photosensitive drum 12 and having an opening 18 along the axial direction; 16;
．． 16 is a shutter base 171. This is a shutter plate that is disposed so as to be movable along the longitudinal direction and adjusts the opening rJ length of the opening part 18.

Reference numeral 13 denotes a slit base having a slit 14 for slit exposure of an image on the photosensitive drum 12, and the slit base 13 has an optical sensor serving as a detection means on the side of the slit 14 along its longitudinal direction. 15 integrally.

One end of the slit base 13 in the longitudinal direction is connected to the support plate 3.
It is slidably attached to the rod 33 via 2.33, and a roller 34 is rotatably provided at the other end. In addition, a rack 35 is provided on the load side of the slit mount 13 along the longitudinal direction of the rod 33, and a gear 37 attached to a moving motor 36 is meshed with the rack 35. Thus, the slit base 13 is movable in the direction shown by the arrow in FIG. This is a sensor for controlling the movement area of the slit base 13 by detecting it by the detection plate 39.

The scanning mirror 10.11 moves in the direction of arrow W or R, L'T fE, and is normally retracted to a position away from the projection optical path A in the direction of arrow W, and moves in the R direction during printing. and located at the starting position in optical path A,
Thereafter, it moves in the W direction and scans and exposes the projected image of the film F onto the photosensitive drum 121- through the slit 14 through the optical path B. At this time.

The slit base 13 also moves in synchronization with the scanning mirror to, 11.

FIG. 2 is a layout diagram showing a microfilm retrieval section. In the figure, 20 is a supply reel.

21 and 22 are guide rollers, 23 and 24 are glass plates placed opposite each other across the film moving path, 25 is a capstan roller, and 26 is a pinch roller.

27 is a take-up reel, and 28 is a mark detector.

Supply reel 20 and take-up reel 27 are connected to a film tension and take-up motor (not shown), and capstan roller 25 is connected to a film drive motor (not shown).

Microfilm F has a supply reel 20 and a take-up reel 27
The material is stretched between them, and is wound onto the take-up reel 27 or rewound onto the supply reel 20 by driving the geared stan roller 25.

As shown in FIG. 3, the microfilm F has a negative image recorded in the frame 30 of the microfilm F.
The periphery of each frame is transparent, and an opaque search mark 31 is recorded on one transparent portion of the frame 30.

The film F is illuminated when passing between the glass plates 23,24.

The frame 30 and the search mark 31 are illuminated by the light from 2.3, and the image of the illuminated frame 30 is projected onto the screen 9.

The mark detector 28 detects the photoelectric conversion element r-, and when the search mark 31 passes between the photoelectric conversion element and the illumination II device 1, 2.3, the light incident on the photoelectric conversion element is detected by the search mark 31.
As a result, a pulse signal is generated from the photoelectric variable sensor f. This pulse signal is sent to a counting section as a mark detection signal and counted.

In the second configuration described above, the information recording apparatus according to this embodiment records image information in the following manner. First, when a desired frame number is manually entered into the search device, the gear bustan roller 25 rotates in response to the search command, and the microfilm F begins to move in the direction in which it is wound onto the winding wheel 27. When the search mark 31 on the film Ffx passes through the mark detector 28, the light '1 [
The signal is read by the conversion element and counted by the counter of the search circuit as a mark detection signal, and the desired frame 30 is searched. Since the details of the search circuit are known in Japanese Patent Publication No. 41-260, the description thereof will be omitted here. When the search mark 31 of the desired frame 30 is detected, the drive system stops, the film stands still, and the desired frame 30 is projected onto the screen 9 [ by the projection optical path A via the projection lens 4 and reflection mirrors 5.6, 7.8 − is projected onto.

If you want to print this projected image now, press the print button (
(not shown), the scanning mirror 10°11 moves from the retracted position in the direction of arrow R to a predetermined starting position.

5 to 7 show the states of the scanning mirrors to, tt while they are moving from the retreat position to the start position.
The figure shows a state in which the end of the effective area of the projected image is projected onto the photosensitive drum 12.

At this time, the projected image is being projected onto the optical sensor 20.1-. After that, the scanning mirror 10.11 and the slit base 1
3 moves synchronously from the state shown in FIG. 6 to the state shown in FIG. 7 while projecting a projected image onto the optical sensor 15''. FIG. 7 shows a state in which the tip of the effective area of the projected image is projected onto the photosensitive drum 121. The scanning mirror 10.11 is stopped in the state shown in FIG.

- The image information detected by the light distribution sensor 15 is sent to a calculation circuit (not shown), and the image area is calculated based on the brightness and darkness signals. A control circuit (not shown) moves the shutter/plate 16.16 to expose only one image to the photosensitive drum 12L2 based on the calculation result of the calculation circuit.

Next, the scanning mirrors io and tt are moved to scan and expose the image onto the photosensitive drum 12. Prior to this, the slit base 13 is moved such that the projected image at the tip of the effective area is
The image is moved to a position where it is projected onto the photosensitive drum 4L, that is, a position where it is projected onto the photosensitive drum 1ll-. Therefore, the movement range of the slit base 13 during image detection is different from that during image exposure. FIG. 8 shows a state in which the slit base 13 has completed the above-mentioned movement. Exposure to the photosensitive drum 127 for actually transferring the projected image onto the transfer material starts from the state shown in FIG.

The slit base 13 starts moving from the state shown in FIG. 8, and changes to the state shown in FIGS. 9 to 1O in synchronization with the scanning mirror 10.11 so that the projected image is centered on the slit 71-14. Finally, in FIG. 10, the end of the projected effective image is projected onto the photosensitive drum 12 to complete the scanning exposure.

In this way, in this embodiment, the optical sensor 15 is provided on the slit base 13, and the movement range of the slit base 13 is changed between when detecting an image area and when exposing an image.
Since the image can be reliably projected onto the optical sensor 151, there is no need to increase the size or speed of the device.

Note that in the embodiment 1-1, the scanning mirrors 10 and 11 were kept stopped while the slit base 13 was moved from FIG. 7 to FIG. In order to prevent the image projected onto the photosensitive drum 12-1- from deteriorating due to vibrations that occur due to loosening of the drive system, the scanning mirrors io and ti are overrun, and the scanning mirrors io and ti are overrun. In this case, a start signal indicating that the scanning mirror 10.11 has returned to the starting position and a signal indicating that the slit base 13 has moved to the position shown in FIG. The image exposure may be started in 1 unit when it is confirmed by these signals that both have completed their movement to the start position.

Further, after the detection of the image area is completed, when the calculation of the image area by the calculation circuit and the movement of the shutter plate 16.16 based on the calculation are completed, the movement of the scanning mirror 10.11 and the slit base 13 is started. Of course.

(Effects of Issue 151) The present invention has the configuration and operation described above, and can respond to miniaturization and speeding up of the device.

[Brief explanation of drawings]

FIG. 1 shows a microfilm reader printer as an embodiment of an information recording device according to the present invention. Schematic diagram,
FIG. 2 is a schematic diagram showing the search section of the device, and FIG. 3 is a front view showing the microfilm. Figure 4 is a perspective view showing the slit base, Figures 5 to 10
The figure is an explanatory view showing the movement state 7g of the scanning mirror and the slit base during image area detection and exposure. Explanation of code 12...% Light F' Ram 13...Slit j
S stand 14...slit 15...light sensor 1
6...Shutter plate F...Microfilm patent applicant Canon Co., Ltd. -';. Agent: Riichi Kano Yoshikazu Shinpa; Agent: Patent attorney Oku 1) Nori 2 Figure 1 Figure 2 F Mikeco Film 3I Chiyasu Mark

Claims (1)

[Claims] An information recording apparatus that detects an area corresponding to an image on an information recording medium by a detection means, controls an area to be slit-exposed on an image carrier by a scanning means in accordance with this area, and records an image of a predetermined area, An information recording device characterized in that the detection means is disposed so as to be movable integrally with the exposure slit, and the movement range of the detection means and the exposure slit is made different between when detecting an image area and when exposing. .