JPS606826Y2 - reader printer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reader-printer that projects an image onto a screen to read it, and projects it onto a photoreceptor to make a copy.

Generally, in this type of reader printer, image positioning indicators are displayed on the screen in order to display the image area to be printed out of the image projected on the screen.

By positioning the image to be printed in accordance with the marks on the screen, this image can be correctly projected onto the photoreceptor to obtain a copy.

Reader printers can print images (original documents) of various sizes.
Because the projection magnification is varied and printing paper of various sizes is used, it is necessary to display a large number of image positioning indicators on the screen that indicate the printed boundaries of the projected image.

For example, A4 as printing paper (transfer paper, photosensitive paper, etc.)
．． A3. You can select either A5 or B4 and print an image of the size corresponding to the selected print paper, or you can use only one specific type of print paper and change the orientation of this print paper. In devices that can print, when image positioning indicators are displayed on the screen that frame the area corresponding to the size of the printing paper or the orientation of the printing paper, the large number of indicators displayed on the screen and the projected image are Problems may arise, such as the image being impossible to read due to overlapping marks, or the image being unable to be printed correctly due to incorrect index selection.

The present invention solves the above problems, and when a large number of image positioning indicators are required to print images of various sizes,
To provide a reader printer that can correctly read an image on a screen, correctly position the image at a predetermined index, and correctly print a desired image.

The present invention will be explained below with reference to specific examples shown in the drawings.

Figure 1 shows a microfilm reader printer to which the present invention is applied.The main body is composed of an upper machine box 1 and a lower machine box 2.The lower machine box 2 includes an illumination lamp 3, a condensing lens 4,
, an illumination means having a reflecting mirror 5, a condensing lens 6, etc. is arranged.

Inside the upper machine box 1 are a projection optical means having a projection lens 7, a reflection mirror 8, etc., a reflection type screen 9 that receives reflected light from the reflection mirror 8, a copy paper storage cassette 10,
A printing unit including a feed roller 11, a charger 12, a feed belt 13, a developer tank 14, a developing roller 15, etc. is provided.

A fish carrier 16 holding two glass plates 614 G2 that sandwich a microfish is arranged between the condenser lens 6 and the projection lens 7.
is movably installed on the upper surface of the lower machine box 2.

By operating the moving handle 17 and moving the carrier 16 back and forth and left and right, a desired portion of the microfish can be placed at a predetermined position (projection position).

An observation opening is formed in the front of the machine box, and a filter 18 is disposed in this opening.

The filter 18 reduces external light incident on the screen 9 and corrects the color temperature, optimizing the contrast of the image on the screen when an observer reads the image on the reflective screen 9 through the filter 18 in the aperture. It is something to do.

The reflective screen 9 is connected to a screen moving mechanism, and the screen moving mechanism reciprocates between the reading position (imaging position) shown by the solid line in FIG. 1 and the opening blocking position shown by the chain line 9' in FIG.

The screen 9 is detachably held on the support plate 51 and moves integrally with the support plate 5.

When the screen 9 is placed at the imaging position indicated by the solid line, the microfilm image is projected onto the front surface of the screen and can be read through the filter 18.

When the screen is placed in the opening-blocking position indicated by the chain line 9', no outside light enters the upper machine box through the opening, and the inside of the machine box becomes a dark room. is transported.

The screen 9 is a reflective screen made of synthetic paper with rough surfaces on both the front and back sides, a metal plate coated with light-diffusing paint on both sides, or the like.

This screen 9 is attached to a predetermined position on the support plate 51 by a fastener 52 such as a clip attached to the support plate 51, and can be removed from the support plate 51 as desired.

A sheet of electrophotographic copying paper S is stored in a cassette 10 horizontally or vertically, and this copying paper is made of electrofax paper with a base paper coated with zinc oxide.

When the screen 9 is located at the dashed line position 9', the cassette 1
The copy paper S within 0 is fed to that 1 by a known paper feed roller 35.
The sheet is sent out between the feed rollers 11, 11.

The copy paper S sent by the feed rollers 11, 11 is uniformly charged by the charger 12, passes between the feed belt 13 and the guide roller 36, and the traveling direction is changed by the guide plate 37, and the copy paper S is transferred to the feed belt 13. guided to the sloping surface.

The feed belt 13 is endless and includes rollers 38, 39,
It is stretched in a triangular shape by drive rollers 40.

Note that 41' is a tension adjustment roller of the feed belt 13.

The surface of the feed belt 13 is provided with a large number of slots vertically and horizontally.

A suction device 41 having a large number of suction holes is arranged inside the feed belt 13 facing the inclined surface.

When the copy paper S is guided to the inclined surface of the feed belt 13, the copy paper S is attracted to the surface of the feed belt 13 by the suction action of the suction device 41 and is fed to the end where the screen 9 was previously placed. sent to the image position.

At this time, as described above, the screen 9 is placed at the position indicated by the chain line 9'.

When the copy paper S comes into contact with either one of the positioning switches SW1 or SW2, which is a microswitch placed near the image forming position, a signal is output from the switch SW1 or SW2, and this signal causes the feed belt 13 to stop.

When the copy paper S is set in the cassette 10 vertically, the switch SW1 detects the copy paper. When the copy paper S is set in the cassette 10 horizontally, the switch SW2 detects the copy paper.

The screen 9 has a thickness of about IWrIn, and the copy paper S has a thickness of about 0.1 mm, but when both are placed at the imaging position, both are within the focal depth of the projection lens 7, There is no need to focus between the two.

The copy paper S placed on the inclined surface of the feed belt 13, that is, the image forming position, is fed again by the feed belt 13 after the microfiche image is projected, and the copy paper S on which the electrostatic latent image has been formed is transferred to the pinch roller 43. After passing through, it is separated from the feed belt 13, guided by the guide plate 44, and transferred to the feed roller 45.
, 45.

The copy paper S sent by the feeding rollers 45, 45 is developed by the developing roller 15, and then developed by the feeding rollers 46, 4.
6 between the guide plates 47, and is then discharged from the outlet 49 of the machine box 1 to the tray 50 on the machine box 1 by the discharge rollers 48 and 48.

The above-described image forming process is well known and will not be described further.

Figures 2a and 2b show the screen 9 mounted on the support plate 51. Figure 2a shows the screen 9 mounted on the support plate 51 with one side (surface) facing the projection surface. Figure 2 shows the screen 9 turned over and the screen 9 on the other side (
It is shown mounted on the support plate 51 with the back surface facing the projection surface.

On the surface of the screen 9, there are two types of image positioning indicators a.
, b are displayed, and index a indicates that when A4 size copy paper is set horizontally in the cassette (the copy paper is conveyed to the imaging position with the long edge of the copy paper at the top), it is set horizontally. When printing a desired image on the A4 copy paper, if the projected image is positioned at this index a, only the image projected in the area surrounded by this index will be printed on this copy paper, and the index or A4 When copy paper of the same size is loaded vertically in a cassette (the copy paper is conveyed to the imaging position with the short edge of the paper at the beginning), the desired image is printed on the copy paper set vertically. When a projected image is positioned at this index, only the image projected within the area surrounded by this index will be printed on the copy paper.

Furthermore, on the back side of the screen 9, three types of image positioning indexes C, ate are displayed, and the index C indicates the position of the copy paper set horizontally when B5 size copy paper is set horizontally in the cassette. When a desired image is printed on the copy paper, if this index C is used to position the projected image, only the image projected within the area surrounded by this index will be printed on the copy paper.

Similarly, the index d is an index for positioning the image to be printed when a B5 size copy paper is placed vertically in a cassette, and the index C is an index for positioning the image to be printed.
This is an index for positioning an image to be printed when copy paper of the same size is set vertically in a cassette and printed.

In addition, when printing, the projection magnification of the image is changed depending on the size and orientation of the copy paper used, and the orientation of the image is changed, so the projection magnification can be changed by changing the projection lens. It is configured to change the direction of the image on the screen using a known image rotation means.

Therefore, when printing images on three different sizes of copy paper and printing images on each copy paper as in the embodiment, conventionally it is necessary to display five or more indicators on the same side of the screen; However, according to the above-mentioned embodiment, it is possible to print on copy paper of various sizes. Since the number of indicators displayed on the surface of the screen can be reduced when printing, the problems of the conventional method do not occur.

In the above embodiment, indicators are displayed on both ends of the screen, but different indicators may be displayed on one side of a plurality of screens, and the screens may be replaced as necessary.

By displaying only one indicator on one side of each screen,
The projected image is easier to see and there is no error in positioning the image.

In addition, the mechanism for attaching and detaching the screen is not limited to the embodiment, and the screen may be detachably held using a magnet, or a hole may be provided at the edge of the screen and a pin may be inserted or removed through the hole to place the screen on the screen. may be held detachably.

FIG. 3 shows another embodiment of the screen, in which the screen 9' has markers in which the print area A, which is divided by image positioning markers, is colored white or pale blue, and the non-print area B is colored in another color. It shows.

Each of the other screens replaced with this screen 9' has the same color in the print area divided by the index as that in FIG. 3, but the color in each non-print area is the same as that in FIG. are made in different colors, and indexes with different print area areas or positioning are provided.

The present invention can be applied to various known printing methods.

As described above, according to the present invention, there is no need to display a large number of image positioning indicators on the surface of the screen, which makes it easier to see the image on the screen, and prevents the image from being miscopied by positioning it to the wrong indicator when printing. No more stuffing away.

You can also easily change indicators by simply flipping the screen.

[Brief explanation of the drawing]

Figure 1 shows the constituent countries of a reader printer showing one embodiment of the present invention, Figures 2 a and b are diagrams explaining how it is mounted on a screen, and Figure 3 shows another embodiment of the screen. . 9...Screen, 51...Support plate,
52...stop.

Claims (2)

[Scope of utility model registration request] (1) In a reader printer that projects an image onto a screen and prints the image projected on a predetermined area of the screen onto copy paper, a reflective screen with a light diffusion layer formed on both the front and back surfaces is removably placed at the imaging position. Then, image positioning indicators corresponding to the size of the copy paper are provided on both sides of this screen, the positions of the positioning indicators on both sides are different, and any surface of the screen is placed at the imaging position facing the image projection side. A reader printer featuring (2) The reader printer according to claim 1, wherein the area displayed by the image positioning index has a different color from the outside of the area.