JPH0321941A - Copy machine with slide projector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a copying machine in which a latent image is formed on the surface of a photosensitive sheet by forming an image of light transmitted through a slide film.

(b) Prior Art In recent years, copying machines have become capable of producing color images, and along with this, it has become possible to print slide film images using copying machines.

(C) Problems to be Solved by the Invention A common slide film is 35 mm film (24 x 36 mm), which is enlarged to an appropriate magnification and copied. However, since the slide film has a different vertical and horizontal ratio from the paper (image receiving sheet) of a specified size, there is a problem in that the copied image does not fit perfectly on the paper, resulting in the copied image being skewed on the paper. That is, when performing normal copying processing, control is performed so that the leading edge of the latent image on the photosensitive sheet and the leading edge of the image receiving sheet coincide with each other at the development position in the conveying direction of the photosensitive sheet and the image receiving sheet.

This control is sufficient if the size of the latent image and the image-receiving sheet are the same, but as mentioned above, if the length of the latent image and the length of the image-receiving sheet are different, the latent image may be biased toward the leading edge of the paper. This will make it look bad.

SUMMARY OF THE INVENTION An object of the present invention is to provide a copying machine that can form a good-looking image by placing a slide film image in the center of a sheet of paper.

(d) Means for Solving the Problems This invention forms a latent image by forming an image of transmitted light from a slide film on a photosensitive sheet, and then feeds an image receiving sheet to this latent image to combine both. In a copying machine equipped with a slide projector that performs overlapping development processing, a means for detecting a latent image length l in the conveying direction of a photosensitive sheet and an image receiving sheet}L in the conveying direction of an image receiving sheet, (L-11! )/2 of the image-receiving sheet to the developing position.

(Q) Effect FIG. 1 is a diagram showing the structure of the present invention.

A developing position P2 is located between the pressure rollers 1. Development position P2
A photosensitive sheet 2 and an image-receiving sheet 3 are conveyed to and are subjected to development processing. A l-long latent image 4 is formed on the photosensitive sheet 2 by the light transmitted through the slide film, and the image receiving sheet 3 is superimposed on this latent image 4. The length l of the latent image is the magnification. It can be easily determined from the initial film length. Further, the length L of the image receiving sheet 3 can be easily determined from the paper size. Note that the paper size is detected by a paper cassette or the like containing the image-receiving sheet, which is a well-known technique. Based on these human power values, the control section calculates (L-1!)/2 and feeds the image receiving sheet earlier by this amount.

As shown in FIG. 2, in order to transfer the latent image 4 to the center of the image-receiving sheet 3 in the conveying direction of the photosensitive sheet and the image-receiving sheet, (L-1!)/2 Just leave it alone. That is, at the development position P2, the image-receiving sheet 3 may be fed so that the position 3a where the image-receiving sheet has been advanced by (L-1!)/2 matches the leading edge 4a of the latent image. The paper is fed earlier by the length of (L-f)/2.

if) Embodiment FIG. 4 is a diagram showing the structure of a copying machine which is an embodiment of the present invention.

A slide projector 12 is provided at the upper right side of the copying machine main body 11 and is detachably attached to the copying machine main body 11. The slide projector 12 is equipped with a light source 13, a slide film holder 14, and a lens 15.

A slide film to be copied can be mounted on the slide film holder 14, and the mounted slide film is moved in the direction of arrow A. Then, the light transmitted through the slide film exposes a photosensitive sheet, which will be described later. In the slide projector 13, the magnification in the direction perpendicular to the scanning direction can be changed by changing the position of the lens 15, and the magnification in the scanning direction can be changed by changing the scanning speed in the direction of arrow A.

A photosensitive sheet 21 in the form of a roll is provided inside the copying machine main body 11. The photosensitive sheet 21 is a photocurable material,
This is a sheet coated with microcapsules containing color-forming dye, etc. When exposed to light, some of the microcapsules harden to form a latent image, and when pressure is applied, the unhardened microcapsules are destroyed and the dye is released. leak. This dye is colored by the developing material applied to the image-receiving sheet.
The image is formed on the image-receiving sheet (development process). The photosensitive sheet 21 is housed in a cartridge 22 and is protected from external light and external pressure. Cartridge photosensitive sheet 21
is wound onto the winding shaft 24 via the exposure position P1, bumper roller 23, and development position P2. The photosensitive sheet 21 is exposed to light transmitted through the slide film at the exposure position Pi to form a latent image. And the development position P
In step 2, it is superimposed on an image receiving sheet and developed.

The development position P2 is the contact position of the pair of pressure rollers 25, and development is performed by the pressure of the pressure rollers. 26 is a backup roller that presses the upper pressure roller. The buffer roller 23 is used to perform exposure processing and development processing separately (because the processing speeds of the two are different), and is movable to the upper right part of the exposure section as shown in the figure.

As the buffer roller 23 moves in the direction of arrow B, the photosensitive sheet 21 is pulled out from the cartridge 22 and exposed at the exposure position P1. At this time, pressure roller 2
5 is a stopped state. When the exposure process is completed, the pressure roller 25 rotates and the exposed photosensitive sheet is moved to the development position P.
will be sent to 2.

A manual feed tray 31 and a paper cassette 32, 33 are provided on the right side of the copying machine main body 11. Image receiving sheets 34 are stored in the manual feed tray and paper cassettes 31 to 33, and these paper sizes are detected by paper size sensors S1 to S1.
It is designed to be detected by S3. At the time of image formation, an image receiving sheet 34 is fed from either the manual feed tray 31 or the paper cassette 32 or 33. The fed image receiving sheet 34 is temporarily stopped by a timing roller 35, and is sent to a developing position P2 at a predetermined timing by rotation of the timing roller 35. S
4 is a sensor for detecting the image receiving sheet 34 at the position of the tie-dangling roller 35;

In addition, in addition to the slide projector l2, the copying machine main body 1
An original platen 41 and an optical system device 42 including a light source, a mirror, etc. are provided on the upper surface of the original document plate 1, and distribute reflected light from the original to the exposure position P1. The light transmitted through the slide film and the light reflected from the original are selectively guided to the exposure position pt by rotation of the mirror 43.

FIG. 3 is an enlarged view of the vicinity of the development position P2. Hereinafter, the timing of feeding the image receiving sheet will be explained with reference to this figure.

When the photosensitive sheet 21 is exposed to light transmitted through the slide film, the leading edge of the latent image at the end of exposure becomes point D. That is, since the exposure process is started at P1, P2-
No latent image is formed in the m-long region between Pi. After the exposure process is completed, the latent image is sent to the development position P2 by the rotation of the pressure roller 25. On the other hand, as described above, the image receiving sheet 34 is once stopped by the timing roller 35, and then fed to the developing position P2 by a predetermined die ξ. The distance between this developing position P2 and the tying roller 35 is defined as n. Here, if you want to match the tip of the latent image with the tip of the image receiving sheet 35, the rotation start of the timing roller should be longer than the rotation start of the pressure roller 25 by a length of m-n...■ Just delay it. Furthermore, if you want to advance the leading edge of the image-receiving sheet by a length of (Ll)/2 earlier than the leading edge of the latent image, the rotation start of the timing roller should be m-(n+(L-x)/2).・・・Just delay it by the length of ■. If this is converted into time, ΔT=(m-(n+(L-1)/2))/v...■. Note that ■ is the conveyance speed of the photosensitive sheet image-receiving sheet. Furthermore, m and n are constants specific to the copying machine, and L and β
can be determined from the paper size and copying magnification.

FIG. 5 is a block diagram of the main parts of the copying machine.

Data is input to the CPU 51 from an operation panel 54 on the top surface of the copying machine main body, paper size sensors S1 to S3, paper size sensor S4, and the like. Data such as selection of original copy mode/slide copy mode, copy magnification, manual feed tray, paper cassette selection, etc. are inputted from the operation panel 54. R.A.
A correspondence table between paper sizes and L is stored in M53, and a ΔT calculation program is stored in ROM52. The CPU 51 turns on the clutch 56 that transmits the driving force from the main motor 55 to the timing roller 35 based on the calculated ΔT.

FIG. 6 is a flowchart showing the processing procedure of a copying operation according to the present invention.

When the slide copy mode is selected and the magnification and paper cassette are selected, E and L are determined based on these data, and then ΔT is calculated (nl to
n5). And if the print switch is operated (n6
) The copy process is started. That is, first, exposure processing is started and a latent image is formed on the photosensitive sheet 21. In parallel with this, an image receiving sheet 34 is fed to the timing roller 35. When the exposure process is completed, the pressure roller 25 rotates and the photosensitive sheet 21 is sent to the developing position P2 (n8). Simultaneously with the start of rotation of the pressure roller 25, a timer is started to determine the feeding timing of the image-receiving sheet, and when ΔT has elapsed, the timing roller clamp 56 is turned on to rotate the tying roller 35 (n9 to n11). As a result, the image-receiving sheet is sent to the development position P2 earlier than the latent image by a length of (LA)/2, and the image is transferred to the center of the image-receiving sheet 34. The clasp 56 is turned off when the trailing edge of the paper passes the timing roller 35, and then the pressure roller 25 is turned off to complete the development process (n12 to n14).

fg) Effects of the Invention According to the present invention, an image can be transferred to the center of the image-receiving sheet in the conveyance direction of the image-receiving sheet, so that an image with good appearance can be formed.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams showing the configuration and operation of the invention, Figure 3 is a configuration diagram of the vicinity of the pressure development position of the copying machine, Figure 4 is a schematic diagram of the configuration of the copying machine, and Figure 5 is a copy of the same. FIG. 6, which is a block diagram of the machine, is a flowchart showing the copy processing procedure related to development processing. 12-Slide projector, 25 one-pressure Corolla, 21
One photosensitive sheet, 31 - Manual feed tray, 32.33 - Paper cassette, 3.5 - Timing roller, P 1 - i Light position, P2
1 development position, 31 to S3 1 paper size sensor.

Claims (1)

[Claims] (1) Equipped with a slide projector that forms a latent image by forming a latent image by focusing the transmitted light of the slide film on a photosensitive sheet, then feeds an image-receiving sheet to the latent image, superimposes the two, and develops the image. In a copying machine, a means for detecting a latent image length L in the conveying direction of the photosensitive sheet and an image receiving sheet L in the conveying direction of the image receiving sheet; What is claimed is: 1. A copying machine equipped with a slide projector, characterized in that: a means for quickly feeding an image-receiving sheet by using a slide projector;