JPH07219059A - Micro film reader printer - Google Patents

Abstract

(57) [Abstract] [Purpose] A micro film reader that enlarges and projects the original film F on the reader screen 9 when a reader is used, and at the time of printing, performs image exposure on the image carrier of the printer unit via the moving scanning optical system 10. To reduce the first copy time for small size printing on printers. A scanning reference optical system 10 moves a print reference 16 of an enlarged projection image of an original film on a reader screen 9.
A microfilm reader printer characterized by being set closer to the home position of.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microfilm reader printer for reading image information recorded on an original film (microfilm) (reader mode) and recording the image information (print mode). More specifically, the present invention relates to a microfilm reader printer that enlarges and projects an original film on a screen of a reader unit in a reader mode, and performs image exposure on an image carrier of a printer unit via a moving scanning optical system in a print mode.

[0002]

2. Description of the Related Art FIG. 2 shows a schematic perspective view of both optical paths of a reader system and a printer system of an example of a microfilm reader printer of the above type. FIG. 3 is a diagram for explaining the relationship between the print size index on the reader screen and the forward movement distance of the scan case as the movement scanning optical system.

In FIG. 2, reference numeral 1 denotes an illuminating section composed of a halogen lamp, a reflection shade, a heat insulating filter, etc. The light of the illuminating section 1 is reflected upward by an illuminating light reflecting mirror 2.
The microfilm F, which is the original film, is illuminated from below through the condenser lens 3.

The microfilm F is a roll microfilm or a microfish film mounted and held on a microfilm carriage (not shown), and a desired image frame portion is automatically searched or manually searched for an upper position (illumination) of the condenser lens 3. It is located in the search position.

Then, the film transmitted light of the film illumination light enters the projection lens 4 and passes through the fixed first mirror 5 and the fixed second mirror 6, and further in the reader mode, the fixed third mirror 7 and the fixed fourth mirror. 8 is sequentially passed through and is enlarged and projected onto the inner surface of the reader screen 9. That is, the image information of the image frame portion of the microfilm F, which is located at the search position at the illumination position, is enlarged and projected, and can be read from the outer surface side of the reader screen 9.

Reference numeral 10 denotes a scan case (scanner / mirror box) as a moving scanning optical system of the printer system. In this scan case 10, the first and second print mirrors 11 and 12 are arranged and supported in an angular posture in which the extension surfaces of their reflection surfaces intersect at right angles as shown in FIG.

The scan case 10 is arranged along a rail member (not shown) with respect to the reader optical path between the fixed second mirror 6 and the fixed third mirror 7 of the reader system with respect to the central optical axis of the reader optical path. In the horizontal plane at right angle
It is guided so that (back scan) can be entered, and conversely, it can be retracted by retracting b.

Reference numeral 13 is a printer section, and 14 is an image bearing member of the printer section. In this example, a rotary drum type electrophotographic photosensitive member (hereinafter referred to as a photosensitive drum) is used. Reference numeral 15 is a slit plate provided immediately above the photosensitive drum 14.

Around the photosensitive drum 14 and in the vicinity thereof, known electrophotographic process equipment, such as a primary charging device, a developing device, a transfer charging device, a cleaning device, a paper feeding mechanism, and a fixing device, are arranged, and a printer section is provided. Although they are constructed, they are omitted in the figure.

In the reader mode, the scan case 10 of the printer system is located at the home position (leader position) of the solid line position in FIG. 3, and the fixed second mirror 6 and the fixed third mirror 7 of the reader system are arranged. Do not block the leader light path between them. Therefore, the image information of the image frame portion of the microfilm F located at the search position at the illumination position is enlarged and projected on the screen 9 without any trouble.

Focusing and magnification change of the enlarged projection image on the screen 9 can be performed by operating a focusing ring of the projection lens 4 or a zooming lever. Further, the vertical / horizontal changes in the orientation of the enlarged projection image can be changed by rotating the optical elements such as the attitude changing prism attached to the projection lens 4. The vertical and horizontal positions of the projected image on the screen 9 can be adjusted by adjusting the position of the image frame portion of the microfilm F at the illumination position.

In FIG. 3, W1 to W4 are print size indexes (print standards) arranged on the surface of the reader screen 9 so as to correspond to various print sizes, and indexes such as print frames are set for each print size. At least one place is provided. W1 is A3 size, W2
Is an index defining each print area of B4 size, W3 is A4 size, and W4 is B5 size. This index is generally provided symmetrically with respect to the right and left bisector center line O of the screen 9 as a rough reference regardless of the print size.

The enlarged projection image range corresponding to the print areas of various sizes on the surface of the screen 9 defined by these respective indexes W1 to W4 is copied by the printer unit 13 onto the recording material (transfer material) of each corresponding size. This is a possible image range.

Therefore, when printing the enlarged projection image on the screen 9, according to the desired print size,
The magnification, vertical / horizontal posture, and position of the projected image so that the image area to be printed of the enlarged projected image on the screen 9 fits within the print area on the screen surface defined by the index corresponding to the desired print size. Adjust and select the print size, then press the print start key.

Then, the apparatus control system is switched to the print mode, the printer unit 13 is driven, the photosensitive drum 14 is rotationally driven at a predetermined process speed (peripheral speed) in the clockwise direction shown by the arrow in FIG. The scan case 10 is driven forward (back scan) at a predetermined control speed in the direction of arrow a from the home position of the solid line position in FIG. 3 by a drive mechanism (not shown). By the forward drive a of the scan case 10, the first print mirror 11
Enter while crossing the leader optical path between the fixed second mirror 6 and the fixed third mirror 7.

The forward drive distance of the scan case 10 is controlled in accordance with the selected and designated print size.

That is, when the print size is B5 or A4 size, the scan case 10 moves forward from the home position of the solid line position in FIG. 3 and the signal plate 21 provided on the scan case 10 detects the exposure start position. The first print mirror 11 moves forward by a distance L11 until it is detected by a first detection element Q11 such as a photocoupler, and B5 and A4 of the reader optical path between the fixed second mirror 6 and the fixed third mirror 7 are moved. Reach a position (exposure start position) where the size image area can be scanned.

In case of B4 size, scan case 10
Moves a distance L12 until the signal plate 21 is further detected by the second detection element Q12, and reaches the position where the first print mirror 11 can scan the B4 size image area of the reader optical path.

In the case of A3 size, in the scan case 10, the signal plate 21 has a third detection element Q.
The first print mirror 11 reaches a position where it can scan the A3 size image area of the reader optical path by moving forward a distance L13 until it is detected by 13.

After the scan case 10 has been moved forward a by a distance corresponding to the selected and designated print size as described above, the scan case 10 is reversely driven and turned to the backward movement b. The returning speed of the scan case 10 is one of the rotational peripheral speeds of the photosensitive drum 14 of the printer unit 13.
It is controlled to / 2.

By the backward movement b of the scan case 10, the optical path of the reader is scanned by the first print mirror 11, and the scan light is emitted from the first print mirror 11 to the second print mirror 11.
The light is reflected by the print mirror 12, and is slit imagewise exposed (image exposure) from the second print mirror 12 through the slit of the slit plate 15 to the rotary photosensitive drum 14, and the printer unit 13 images the image frame portion of the microfilm F. Enlargement printing of the information with the print size specified by selection is executed.

The scan case 10 moves back even after the image exposure on the photosensitive drum 14 is completed, and the scan case 10
When the signal plate 20 provided in the home position is detected by the home position detecting element QH (photo coupler or the like), the signal plate 20 is stopped and the home position is returned to the original position. Then, the first print mirror 11 retracts from the optical path of the reader, and the device returns to the reader mode.

[0023]

As described above, in the conventional microfilm reader printer as in the above example, the print size indexes W1 to W4 on the surface of the reader screen 9 are left and right of the screen 9 regardless of the print size. It was general that they were provided symmetrically with the bisector center line O as a rough reference.

However, in the apparatus for setting the print size index in such a mode, when the print sizes B5, A4, and B4 smaller than the maximum print size A3 are printed, the excess is included in the forward movement distances L11 and L12 of the scan case 10. However, there is a disadvantage that the first copy time becomes longer by including such a moving distance.

That is, as shown in FIG. 3, the right side in the drawing of the print area of A3 size which is the maximum print size on the reader screen 9 and the print areas of B5 size, A4 size, which are smaller than that. B
Each area C between the right side of each print area of 4 sizes
Although 1, C2, and C3 are originally printable areas, they are not used. Therefore, the forward distance L11 in the case of the B5 and A4 print sizes of the scan case 10 and the forward distance L12 in the case of the B4 size are included in the above. Since the forward movement distance corresponding to the originally printable areas C1, C2, and C3 that are not used is included as an extra movement distance, the scan case 10 is exposed by that amount from the home position to the exposure corresponding to each designated print size. Forward a to the start position
The time to play is longer, and the first copy time is longer.

Therefore, an object of the present invention is to shorten the first copy time at the time of small size printing in this type of microfilm reader printer.

[0027]

According to the present invention, a microfilm is used for magnifying and projecting an original film on a reader screen when a reader is used, and for exposing an image on an image carrier of a printer through a moving scanning optical system when printing. In the reader printer, a microfilm reader printer, characterized in that the print reference of the enlarged projection image of the original film on the reader screen is set to the side close to the home position of the moving scanning optical system,
Is.

[0028]

That is, by setting the print reference on the reader screen on the side closer to the home position of the moving scanning optical system, the forward movement of the moving scanning optical system from the home position to the print start position during small size printing is performed. It is possible not to include an extra moving distance in the distance, and the forward time of the moving scanning optical system in small size printing can be shortened for each size, and as a result, the first copy time of small size printing can be shortened. It has become possible to shorten.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining the relationship between a print reference arranged on a reader screen of a microfilm reader printer of this embodiment and a forward movement distance of a scan case as a moving scanning optical system. The same components and parts as those of the apparatus shown in FIGS. 2 and 3 are designated by the same reference numerals, and the repetitive description will be omitted.

Reference numeral 16 is a print reference common to various print sizes arranged on the reader screen 9.
The print reference 16 is made to coincide with the right side of the maximum print size A3, which is the maximum printable area on the reader screen 9, close to the home position (leader position) of the scan case 10 as the moving scanning system. is there. In each of the print areas B4, A4, and B5 which are smaller than the maximum print size A3, the print reference 16 is set as a common right side. Reference numeral 17 is a print frame for A series such as A4 and A3, and 18 is a print frame for B series such as B4 and B5.

That is, regardless of the print size, the reference corresponding to the print size is arranged on the side close to the home position of the scan case (right side of the screen in the figure), and one end coincides with the reference.

In the forward movement of the scan case 10 in the print mode, when the print size is B5, the scan case 10 is moved forward from the home position of the solid line position in FIG. The signal plate 21 is moved forward the distance L1 until it is detected by the first detection element Q1 such as a photo coupler for starting exposure, and the first print mirror 11 is fixed to the second mirror 6 (FIG. 2) and the third fixed mirror. Position where the B5 size image area of the reader optical path between the mirrors 7 can be scanned (exposure start position)
Reach

In case of A4 size, scan case 10
Goes a distance L2 until the signal plate 21 is further detected by the second detection element Q2, and reaches the position where the first print mirror 11 can scan the A4 size image area of the reader optical path.

For B4 size, scan case 10
Moves a distance L3 until the signal plate 21 is further detected by the third detection element Q3, and reaches the position where the first print mirror 11 can scan the B4 size image area of the reader optical path.

In case of A3 size, scan case 10
Moves a distance L4 until the signal plate 21 is further detected by the fourth detection element Q4, and reaches the position where the first print mirror 11 can scan the A3 size image area of the reader optical path.

After the scan case 10 has been moved forward by the distance corresponding to the selected and designated print size as described above, the scan case 10 is moved in the same manner as in the apparatus shown in FIGS. It is inverted and driven to return to b.
The return speed of the scan case 10 is the printer unit 13
The peripheral speed of the photosensitive drum 14 is controlled to 1/2.

By the return movement b of the scan case 10, the optical path of the leader is scanned by the first print mirror 11, and the scan light is emitted from the first print mirror 11 to the second print mirror 11.
The image is reflected by the print mirror 12, and then the slit image exposure is performed (image exposure) from the second print mirror 12 through the slit of the slit plate 15 (FIG. 2) to the rotary photosensitive drum 14.
Then, the printer unit 13 enlarges and prints the image information of the image frame portion of the microfilm F in the print size selected and designated.

The scan case 10 moves back even after the image exposure on the photosensitive drum 14 is finished, and the scan case 10
When the signal plate 20 provided in the home position is detected by the home position detecting element QH (photo coupler or the like), the signal plate 20 is stopped and the home position is returned to the original position. Then, the first print mirror 11 retracts from the optical path of the reader, and the device returns to the reader mode.

In this embodiment, the forward movement distances L1 (B5), L2 (A4), from the home position of the scan case 10, which is the moving scanning optical system in each print size in the print mode, to the predetermined exposure start position. L3
(B4) and L4 (A3) are the same as the conventional device of FIG. 2 and FIG. 3 with respect to the maximum print size A3 (L4
= L13), but small size B5, A4, B4
The forward movement distances L1, L2, and L3 do not include the above-described extra distances C1, C2, and C3 as shown in FIG. 3, respectively, as is clear from the comparison between FIG. 1 and FIG. Forward movement distance L11, B of B5 / A4 in 3
4 is shorter than the forward movement distance L12. That is, since the forward movement distance of the scan case 10, that is, the forward movement time, for each small size print size is shortened, the first copy time for the small size print is shortened.

[0040]

As described above, according to the present invention, in the microfilm reader printer, the first copy time during small size printing can be shortened.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a relationship between a print reference arranged on a reader screen of a microfilm reader printer of this embodiment and a forward movement distance of a scan case as a moving scanning optical system.

FIG. 2 is a schematic perspective view of both optical paths of a reader system and a printer system of an example of a conventional type microfilm reader printer.

FIG. 3 is an explanatory diagram of a relationship between a print size index on a reader screen and a forward movement distance of a scan case as a movement scanning optical system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Illumination part F Original film (microfilm) 4 Projection lens 5-7 Fixed mirror of reader system 9 Reader screen 10 Scan case (moving scanning optical system) 11 ・ 12 1st and 2nd print mirror 13 Printer part 14 Image carrier (Electrophotographic photosensitive drum) 15 Slit plate 16 Printing standard 17 ・ 18 Print frame for A series and B series 20 ・ 21 Signal plate Q1 to Q4 First to fourth detection elements QH such as photo coupler for starting exposure Home position detector

Claims (1)

[Claims] 1. A microfilm reader printer for enlarging and projecting a manuscript film on a reader screen when a reader is used, and exposing the image on an image carrier of a printer unit through a moving scanning optical system when printing, on a reader screen. A microfilm reader printer characterized in that the print reference of the enlarged projection image of the original film is set to the side close to the home position of the moving scanning optical system.