JPS63116138A - Reader/printer - Google Patents

Abstract

PURPOSE:To independently and easily executed the optical adjustments of a reader optical path and a printer optical path by arranging independently the mirror of the reader optical path and the scanning mirror of a printer optical path, and switching printer optical path and reader optical path. CONSTITUTION:At the time of an optical axis alignment of a printer mode, for instance, a scanning mirror 7a is fixed at the inclined angle of 45 deg. against the optical axis of a photographic lens 6 by a jig (not shown in the figure), etc., and either one of a second mirror 8 and a third mirror 9 is adjusted so that a light beam from the center of a photographic lens 6 is made incident on the center of a photosensitive drum 1 through the scanning mirror 7a and the second and the third mirrors 8, 9 for the printer mode. On the other hand, at the time of a reader mode, a first mirror 7b for a reader is placed in an emitting optical path position L from the projection lens 6 by moving a mirror supporting base 24, and the engaging recessed part 39b of the mirror supporting base 24 is engaged to a click mechanism 38, positioned and detained. Subsequently, an emitted light from the projection lens 6 is allowed to pass through its first, second and third mirrors 7, 12 and 13 for the reader, and the image of a film F is enlarge and projected onto a screen 14.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention [Field of Industrial Application] The present invention relates to a reader printer for microfilm and the like.

[Conventional technology]

FIG. 6 shows a schematic configuration diagram of an example of a conventional reader printer.

In the figure, 51 is a film illumination section, and the film F
It consists of a lamp 52 that illuminates the area, a condenser lens (not shown), and the like. 53 is a projection lens, 54 is a first mirror, and its horizontal axis &! (in a direction perpendicular to the page) by a rotation mechanism (not shown).

55 is a second mirror for the reader, 56 is a projection screen, 5
7 to 59 are the 20th and 311th mirrors for the printer, 60
Reference numeral denotes a printing mechanism section, and numeral 61 denotes a rotating photosensitive drum as a recording medium of the printing mechanism section. Various image forming process devices are arranged around the drum 61, but are not shown in the figure. Reference numeral 62 indicates a paper feed cassette of the printing mechanism, and reference numeral 63 indicates a paper discharge tray for print (copy) paper P to be printed out.

In the reader mode, the first mirror 54 is held at the first angular posture position shown by the solid line, and the light emitted from the projection lens 53 passes through the first mirror 54 and the second reader mirror 55 to the projection screen 56. The frame image of the film F is enlarged and projected onto the screen 56.

In this case, the light reflected by the first mirror 54 is transferred to the second mirror 54 for printing.
It does not enter the mirror 57.

In the printer mode, the first mirror 54 is switched to a second angular attitude indicated by the two-point m line about the horizontal axis. As a result, the reflected light from the first mirror 54 is transferred to the second reader mirror 5.
The light is switched from the 5th side to the 2nd mirror 57 for printing, and is incident on the photosensitive drum 61 via the 3rd and 4th mirrors 58 and 59 for printing. The first mirror 54 is rotationally driven from the second angular attitude position to a predetermined angular attitude position at a constant angular velocity synchronized with the rotational circumferential speed of the photosensitive drum 61. As a result, the light incident on the photosensitive drum 61 is scanned, and the surface of the drum 61 is sequentially exposed to slit images.

(Problem to be Solved by the Invention) However, as mentioned above, the first mirror 54 that is used in common in the reader mode and the printer mode is used to project the optical path in the reader mode (hereinafter referred to as the reader optical path). Adjustments to align the center of the lens with the center of the screen, mirror adjustments to correct the tilt of the screen and projected image, and mirrors to align the center of the lens with the center of the photosensitive drum in the optical path in printer mode (hereinafter referred to as the print optical path)! The alignments must be performed in conjunction with each other, and 21 of them! At the time of adjustment, the first mirror was not fixed because it was a rotary scanning mirror for printing that also served as a mirror for a reader, so adjustment was difficult.

In addition to the example shown in FIG. 6, there is also a system in which the direction of the first mirror is rotated by 90' in the plane between the reader mode and the printer mode, but this requires multiple highly accurate angle controls, and the example shown in FIG. Similarly, there was a problem in that optical adjustments such as mirror adjustment were difficult.

The present invention has been made in view of the above-mentioned problems, and provides a reader printer in which optical adjustment of the reader optical path and printer optical path can be performed independently, and mirror control can be performed easily and accurately. The purpose is to

Summary: Structure of the Invention [Means for Solving the Problems] The present invention provides a reader printer that performs rotational scanning by synchronizing one scanning mirror with the moving speed of the surface of a recording medium. 1 mirror and a first scanning mirror of the printer optical path are independently arranged to switch between the printer optical path and the reader optical path.

[For production]

By arranging the first mirror of the reader optical path and the first scanning mirror of the printer optical path independently to switch between the printer optical path and the reader optical path, the optical adjustment of the reader optical path and the printer optical path can be performed independently. In addition, highly accurate mirror control is possible.

〔Example〕

FIG. 1 is a front view showing an embodiment of the reader printer of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a plan view thereof.

In the figure, 1 is a film illumination section, and the target frame image section of the microfilm F is automatically or manually arranged in the illumination section 1.

The film illumination section 1 comprises two condenser lenses 3, a film illumination lamp 41, a reflective concave mirror 5, etc., and the light from the lamp 4 is condensed by the concave mirror 5 and condenser lenses 2 and 3 to illuminate the film F.

6 is a projection lens, 7a is a scanning mirror as a first mirror for a printer, 7b is a first mirror for a reader, and each of the mirrors 7a*7b is provided with a mirror switching mechanism, which will be described later, at the position of the output optical path from the projection lens 6. selectively arranged.

8 and 9 are second and third mirrors for the printer, 10 is an electrostatic photographic device as a printer section, and 11 is a rotating photosensitive drum as a recording medium provided in the decoration IO. the drum 1
Known image forming process equipment is arranged around 1, but is omitted from the diagram.

12 and 13 are second and third mirrors of the reader, and 14 is a projection screen.

FIG. 4 is a front view of the initial load mechanism of the scanning mirror 7a as the first mirror for the printer and the first mirror 7b for the reader, and FIG. 5 is a plan view thereof.

In the figure, 21 is a base arranged and fixed at the optical path position;
Reference numeral 22 denotes a pair of guide rails attached to the base 21, and a mirror support 24 is provided on both guide rails 22 via a thrust bearing 23 so as to be movable in the left-right direction in the figure.

25 is a mirror holder that holds the printer scanning mirror 7a; 26 is a mirror rotation shaft that is integrally fixed to the holder 25 by press fitting, etc.; It is rotatably mounted through the

Reference numeral 29 denotes a scanning mirror rotation motor consisting of a pulse motor or the like attached to the bearing member 27 at the end of the rotation shaft 26 opposite to the holder 25, and 30 denotes a reduction gear mechanism, in which the rotational force of the motor 29 is reduced. It is transmitted to the mirror rotation shaft 26 via the gear mechanism 30. 31 is a rotation angle detection arm of the scanning mirror 7a, and 32 is a detection sensor.

Reference numeral 33 denotes a holder for a first mirror for a reader attached to the mirror support stand 24 on the side of the scanning mirror 7a, and the IT mirror 7b for a reader is attached to the holder 33 with its reflecting surface diagonally downward in the direction of the arrow a at an angle of approximately 456 mm. Installed at an inclined angle.

34 is a substrate 21 on the path of light emitted from the projection lens 6.
Translucent openings 35 and 36 are formed in the respective mirrors 71.
- A transparent opening formed in the mirror support base 24 on the lower surface side of 72, 37 is a knob for switching operation of each mirror 7aΦ7b provided on the mirror support base 24, guide the mirror support base 24 by grasping the knob 37 5th along rail 22
By moving as shown by the chain lines in the figure, each mirror 7a and 7b can be selectively placed at the position of the output optical path from the projection lens 6.

Reference numeral 38 denotes a click mechanism for positioning and locking each of the mirrors 7a and 7b at the optical path position rtL; It consists of

In the printer mode, the printer scanning mirror 7a is arranged at the output light path position 21tL from the projection lens 6 as shown in the fourth @, and the rotation angle detection arm 31 and detection sensor 32 of the scanning mirror 7a are used to detect a predetermined position. The scanning mirror 7a is set at the scanning start position and the scanning mirror 7a is rotated using that position as the home position.

That is, the reduction gear mechanism 30 is activated by the mirror rotation motor 29.
The reflective surface of the scanning mirror 7a is rotated in the direction of arrow C in the figure at an angular velocity synchronized with the circumferential velocity of the photosensitive drum 11,
As shown in FIG. 1, the reflected light from the scanning mirror 7a is imaged on the photosensitive drum 11 via the second and third mirrors 8 and 9 of the printer to perform slit exposure scanning. Frame images of film F are printed on printing paper or the like according to an electrophotographic process. The scanning angle of the scanning mirror 7a is easily controlled by the number of steps of the pulse motor 29.

In order to align the optical axis in the printer mode, for example, the scanning mirror 7a is fixed at an inclination angle of 45° with respect to the optical axis of the projection lens 6 using a jig (not shown), etc.
one of the second mirror 8 and third mirror 9 so that light from the center of the photosensitive drum 11 enters the center of the photosensitive drum 11 via the scanning mirror 7a and the second and third mirrors 8Φ9 in the printer mode. JJ will fix it.

On the other hand, in the reader mode, the mirror support base 24 is moved from the solid line position to the chain line position in the MS5 diagram, the first mirror 7b for the reader is placed at the output light path position aL from the projection lens 6, and the mirror support base 24 Click the engaging recess 39b of the button 4I38
It engages and locks in position. Then, the image of the film F is enlarged and projected onto the screen 14 by the light emitted from the projection lens 6 through the first mirror 7b for the reader and the second and third mirrors 12 and 13 of the reader. (shown).

In this case, the mirror optical adjustment for aligning the center of the projection lens 6 with the screen 14 is performed because the first mirror 7b is fixed to the mirror holder 33.
- This is carried out by adjusting one of the third mirrors 12 and 13. However, the first mirror 7b may be configured to be adjustable. The mirror 7b-12-13
Various conventionally known adjustment mechanisms are applicable to the adjustment mechanism, and since it is already well known, the details thereof will be omitted.

In the illustrated embodiment, as shown in FIG. 3, the optical path (printer optical path) La facing the printer mode and the optical path (reader optical path) Lb in the reader mode form an angle of approximately 90° in a plane. Although an example of the configuration is shown, both the optical paths Lae and
It can also be applied to a configuration in which Lb is set in substantially the same direction as shown in FIG. 6 above. In that case, the scanning mirror 7a for the printer and the first mirror 7b for the reader are arranged parallel to each other in a direction perpendicular to the above-mentioned optical paths and switched.

Further, the switching of each of the mirrors 7a and 7b is not limited to the one in which the mirrors 7a and 7b are moved in parallel along the guide rail 22 etc. as in the illustrated example.
Alternatively, both mirrors 7aφ7b may be switched by arranging them and rotating them.

C. Detailed Description of the Invention According to the present invention, the first mirror of the reader optical path and the rotating scanning mirror of the printer optical path are arranged separately, and the optical adjustment of the reader optical path is achieved by switching the optical paths. , and the optical W adjustment of the printer optical path can be easily performed independently.

[Brief explanation of the drawing]

FIG. 1 is a front view of a schematic configuration of a reader printer showing an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view, FIG. 4 is a front view of the mirror switching mechanism, and FIG. 5 6 is a plan view thereof, and FIG. 6 is a schematic configuration diagram of a conventional reader printer. 1 is a film illumination unit, 6 is a projection lens, 7a is a scanning mirror, and 7b is a first mirror for a reader. Figure 2 Figure 3 Figure 1 Figure 6 Figure 5

Claims (1)

[Claims] (1) In a reader printer that performs rotational scanning by synchronizing one scanning mirror with the moving speed of the recording medium surface,
A reader printer characterized in that a first mirror in a reader optical path and a first scanning mirror in a printer optical path are arranged independently to switch between the printer optical path and the reader optical path.