JPS60107049A - Method for producing copy picture generating cubic effect - Google Patents

Abstract

PURPOSE:To produce a copy picture generating a cubic effect by shifting a transfer position of the next color copy picture against a transfer position of the first color copy picture. CONSTITUTION:An original placing plate 2 is held by three pairs of rollers 3-5 at the upper and lower parts of each edge side and the rollers 3, 4 are connected to a motor M through electromagnetic clutches 6, 7. When obtaining a copy by a parallel movement, after the first copying process has been ended, the clutches 6, 7 are connected simultaneously, the rollers 3, 4 are driven and the plate 2 is moved in parallel before the second copying operation is started. When generating a copy by turning, only the clutch 7 is operated and the roller 4 is connected to the motor M in the same way, and the roller 3 is damped by a brake so that it cannot rotate. As for the plate 2, its edge side is shifted forcibly by the roller 4, therefore, it turns slowly centering around a clamp position of the roller 3, and turns a little centering around a point O.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for creating a copy image with a three-dimensional effect using a color copying device or a copying device capable of producing multicolor copies by replacing the developing unit or the like.

Conventional technology As a method of obtaining stereoscopic vision, blue and red filters were applied to each eye, and the images were recorded by superimposing cyan and magenta stereo images at the same position. A technique is known in which an object is prepared and viewed through the filter to make it appear three-dimensional.

On the other hand, even in some monochrome copying machines, multicolor copies can be obtained by replacing the developer (developing unit) and passing the same copy paper through the copying machine multiple times.

Purpose Considering the above, one way to obtain a copy image with a three-dimensional effect using a copying machine is to replace the cyan developing unit and magenta developing unit between the same copies being made twice, and I realized that I could achieve my goal by moving the original on the original platen during exchange.

In this case, if the document is a line image, there is no solid high-density area, so there is no problem even if the two colors overlap. but,
If a document such as a photograph has solid areas with high density, the contours of each color image will be unrecognized due to the high density. For this reason, it is necessary to use a developing method that makes the outline stand out, or to lower the copy density of the high-density area to create the outline.

Therefore, in the present invention, when images are created and copied only in magenta and cyan separately by using a color copying machine for one original, the position of the copy image of the other color with respect to the copy image of one color is provided. To provide a process in which the images are moved by a required amount and the image densities of both are lowered than that of normal copying.

When a copy image obtained by a device implementing the above process is viewed with one eye on the other through a blue filter and a red filter, the image appears to have a three-dimensional effect. According to the above method, a copy image with a three-dimensional effect can be obtained even if the original is a monochrome original, a color original, or a line image.

Configuration The present invention provides: (1) In a color copying machine or a multicolor copying process,
A process in which a magenta image and a cyan image are repeatedly transferred onto a single sheet of paper using a single sheet of paper, in which the transfer position of the next color copy image is moved by the required amount relative to the transfer position of the first color copy image. A method for creating a copy image that gives a three-dimensional effect.

(2) The above-mentioned method (2) consists of changing the image forming conditions in the copying process so as to reduce the maximum density of the copied image.
]) Method for creating a copy image that gives a three-dimensional effect.

(3) The method for creating a copy image that produces a three-dimensional effect as described in item (1) or item r21 above, which comprises moving the original table between the first copy cycle and the next copy cycle.

An embodiment of the present invention will now be described with reference to the drawings.

A copy image (hereinafter referred to as a stereoscopic copy) that produces a three-dimensional effect when viewed with one eye using filters with different characteristics (for example, red and blue) is created by two-color images developed in cyan and magenta, respectively. The images are shifted from each other (see the section on prior art). and,
If it is not possible to decipher the discrepancies in the two-color image, stereoscopic vision cannot be achieved. Therefore, in the copying process, the copy density is lowered than the image density of normal copying, or a developing method is used that makes the outlines of high-density areas stand out. There is a need to.

As mentioned above, the conditions for obtaining a stereoscopic copy are (1) that cyan and magenta can be developed;

(2) Lower the maximum level of image density or create an image with sharp outlines.

(3) A misalignment occurs in the image on the copy paper between cyan and magenta.

is raised.

Regarding (1) above, if a color copying machine is configured with three colors: yellow, magenta, and cyan, it is easy to select two colors by adjustment and copy.

Regarding (2), one way to lower the maximum level of image density is to lower the toner density if a two-component developer is used. However, the disadvantage is that it takes a long response time (correspondence time) to reach the desired value.

There is a method of lowering the charging potential to reduce the amount of toner adhesion and lowering the density. This can be done by controlling the power pack or changing the aperture width of the charger, which is quick and practical.

Separately, it is possible to sharpen the outline by changing the conditions of the developing unit; for example, by widening the distance between the developing roller and the surface of the photoreceptor in the mag development method, it is possible to make the outline more pronounced, such as in the cascade development method. Images with strong edge effects can be obtained.

Concerning (3), possible methods include moving the document position manually, mechanically, or automatically, or delaying the paper feed timing when copying in the second color. To move the document position, there are two cases: parallel movement and rotation.

The former is a copy image shown in the first diagram, and images B, ", and R, each having the same shape, are copied in parallel to each other in the direction of the arrows, and the B image is developed with cyan. In the image, the R image is an image developed with magenta, which is transferred and fixed at different positions over time.

As shown in the second figure, the latter is for example 0 of the transfer paper 1.
Image 8 and image 2 are transferred and fixed in a state where they rotate in the direction of the arrow relative to each other around a point.As in the case shown in Figure 1, images B and 2 are of the same shape, and image B is is an image obtained by cyan development, and the R image is an image obtained by magenta development. The one shown in the second figure is effective in creating a sense of depth in the image.

FIG. 3 is a perspective view showing an example of a mechanical means for automatically moving the document table between the first copying process and the next copying operation, and this type of mechanism is attached to the document table. By setting two images that are misaligned with each other on the transfer paper surface, it is possible to automatically copy two images that are misaligned with each other, with the misalignment as specified (controllable), accurately, and with high reproducibility. It is what it is.

In the figure, reference numeral 2 denotes a document mounting table of a copying machine, and the upper and lower surfaces of each edge are clamped and held by three pairs of rollers 3, 4, and 5 consisting of upper and lower rollers a and b, respectively.

Further, the roller 3 is connected to a motor M via an electromagnetic clutch 6, and the roller 4 is connected to the motor M via an electromagnetic clutch 7.

The rollers 5 merely pressure clamp the platform 2.

To operate the above mechanism to obtain the parallel copy shown in FIG. 1, clutches 6 and 7 are engaged simultaneously after the first copying process is completed and before the second copying operation begins. The rollers 3 and 4 are interlocked with the rotating shaft of the drive motor M, and the mounting table 2 is moved in parallel. It goes without saying that the positional deviation between the transferred images B and R can be controlled by changing the engagement (operation) time of the clutches 6 and 7.

To make a rotating copy of FIG. 2, similarly, while only the clutch 7 is actuated and the roller 4 is connected to the motor M,
The roller 3 is braked so that it cannot rotate. Then, the edge of table 2 is forcibly transferred by rollers 4, and the table 2 rotates gently around the clamp position of roller 3 with the document placed thereon, so that the second copy image is not placed on transfer paper 1. Then, the first image is copied to the roller 3, that is, to a position slightly rotated around the 0 point in the copy image shown in the second figure.

Of course, the above-mentioned mounting table moving means returns to the old position based on the reverse process immediately after the second copying process is completed. For this purpose, it is desirable to use a reversible motor M. When a pulse motor is used to control image misalignment, only one clutch is required, and it is needed only as a means for switching between a parallel movement type copy image and a rotation type copy image.

It is conceivable to combine the above methods in accordance with various types of copying machines.

Next, FIG. 4 shows a side view of an embodiment of a color copying machine used to carry out the method of the present invention. A mylar drum that clamps the paper and conveys it in the direction of the arrow until the transfer of a designated color is completed; 10 is a photoreceptor drum that circumscribes the mylar drum and rotates in the direction of the arrow to repeat the copying cycle; 11 is a photoreceptor A charging charger 12, which is installed close to the circumferential surface of the drum and charges the drum surface, exposes the charged photoreceptor to light and, when facing the photoreceptor on which an electrostatic latent image based on the original document has been obtained, charges the surface of the drum. 12Y is a yellow developer, 121% is a magenta developer, and 12B is a cyan developer. When carrying out the method of the present invention, The developing device 12y remains inoperative. Reference numeral 13 denotes a transfer charge installed inside the Mylar drum 9, which applies a charge from the back side of the transfer paper to electrostatically attract the toner image on the photoreceptor 1 to the transfer paper side. Reference numeral 14 indicates a device having the function of wiping off toner remaining on the surface of the photoreceptor drum that has been transferred by a cleaning device, and reference numeral 15 indicates a static elimination lamp. Further, 16 is a fixing device, and after all the toner images have been transferred, the transfer paper 1 is sent to the fixing device where the image is fixed, and then is discharged as a copy image with a three-dimensional effect.

In the above-mentioned copying machine, the part related to the document mounting table shown in the third figure is the part where the charger 1 is placed on the circumferential surface of the photosensitive drum 1.
1 and the developing device 12, there is an exposure process based on the original, and the detailed process will be explained next.

FIG. 5 shows a flowchart of the method of the present invention, and its operation will be explained according to the drawing. First, a selection button 17 for "stereoscopic mode" is provided on the operation panel of the copying machine.
When it is selected and pressed by the operator, the image forming conditions in the machine are converted and set to the conditions for the maximum density reduction of magenta and cyan. When changing the conditions of the charger 11, the potential at the developing position of the photoreceptor 10 is lowered from 1000 cm under normal conditions to about V4 to V2.

Thereafter, the print button 18 is pressed and a two-color image forming process begins. The document can be moved by preparing the mechanism shown in the third figure as an optional device and attaching it to the required location of the copying machine. You will have to choose. At this time, a control signal to the optional device is sent from the control circuit of the main body of the copying machine, and the motor M and clutch 6.7 are operated in connection with the copying process.

Now, when the print button 18 is pressed and the first copying process begins, the photosensitive drum 10 is charged.

Exposure to light and visualization of the electrostatic latent image by the magenta developing device 12R are performed (at this time, the inside of the copying machine is set to the condition of maximum density reduction).Meanwhile, at the same time, the transfer paper 1 is The image R is conveyed while being clamped by the Mylar drum 9, and when it comes into contact with the toner image on the photosensitive drum, the image R is electrostatically attracted to the transfer paper side by the charger of the transfer charger 13, and the first copying cycle is completed. Prior to that, at least after the photoreceptor drum 10 has completely completed the exposure process, a signal is sent to start the document table moving mechanism in a selected manner, and the moving operation is performed at least until the next copying cycle. It is designed to be over before it begins. At this time, if a safety device is installed such that the next copying cycle is started by clamping the document table until it finishes moving, it will prevent images R and B from being copied to the same position due to some failure. It can also prevent accidents.

The next copying cycle itself is no different from the first copying operation, except that the cyan developer 12B functions and the magenta developer stops (this is a function of the multicolor copying machine itself). , At the same timing, the transfer paper 1 on which the image R has been transferred, which is clamped to the Mylar drum 9, comes into contact with the mylar drum 9, and the toner image B on the photosensitive drum is electrostatically attracted to the transfer paper side. At this time, since the position of the document has moved from the initial copying process as described above, the position of the transferred image B on the transfer paper is different from the position of the image R transferred for the first time. The positional shift of the image can be controlled by controlling the direction and amount of movement of the document table 2.

After the image has been transferred twice to the transfer paper 1, the transfer paper is removed from the clamp of the Mylar drum 9, passes through the fixing device 16, the transferred image is fixed, and the paper is discharged. After the above process is completed, the maximum density reduction condition is canceled in the copying machine, and the normal density condition is restored.

When viewing the stereoscopic copy obtained in this way, if the cyan image B and magenta image R are out of alignment with each other as shown in Figures 1 and 2, a red filter is applied to the right eye and a blue filter is applied to the left eye. Hanging it gives the best three-dimensional effect.

Make a stereoscopic copy using OHP film, and
The same three-dimensional effect as described above can be obtained by applying HP.

Note that a method for obtaining a stereoscopic copy as shown in the first figure, that is, a parallel movement type, is to change the mounting angle of the mylar drum 9 and its drive shaft between the first copy operation and the next copy operation. Although this method can be implemented simply by adopting a means for controlling the deviation, it is not suitable for complicated deviation control.

Effects As described above, by carrying out the method of the present invention, it is possible to create a copy image that has a three-dimensional effect using an original that does not have a three-dimensional effect.

[Brief explanation of drawings]

1 and 2 are plan views of an example of a copy image with a three-dimensional effect produced according to the method of the present invention, and FIG. 3 is a perspective view of a mounting table with an automatic document moving mechanism used to carry out the method of the present invention. , FIG. 4 is a side view of a main part of a color copying machine for implementing the method of the present invention, and FIG. 5 is a flowchart for implementing the method of the present invention. 1...Transfer paper 2...Document mounting table 3.4 and 5...Placement table clamp roller 6 and 7
... Electromagnetic clutch 8 ... Document 9 ... Mylar drum 10 ... Photosensitive drum 11 ... Charger 12 ... Developing device 13 ... Transfer charger 14 ... Cleaning device 16. ... Fixing device agent Patent attorney Makoto Kon Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (3)

[Claims] (1) In a color copying machine or a multicolor copying process, a magenta image and a cyan image are repeatedly transferred onto a single sheet of paper using a single sheet of paper. A method for creating a copy image that gives a three-dimensional effect, characterized in that the transfer position of the next color copy image is moved by a required amount. (2) A method for creating a copy image giving a three-dimensional effect as set forth in claim (1), which comprises changing image forming conditions in the copying process so as to reduce the maximum density of the copy image. (3) Copying that produces a three-dimensional effect as set forth in claim (1) or (2), which comprises moving the original table between the first copy cycle and the next copy cycle. Image creation method.