JPS63138363A - Copying machine - Google Patents

Abstract

PURPOSE:To obtain such a copy picture that an unnecessary blank part is eliminated and the copying form and image are harmonized in size with each other by providing a form size detecting means and a trimming area detecting means for an original. CONSTITUTION:The form size detecting means detects the longitudinal size (y) and lateral size (x) of a set copying form and the trimming area size detecting means for the original detects the longitudinal size (b) and lateral size (a) of a trimming area specified on the original. The detected numerals (y) and (b) are supplied to a longitudinal enlargement rate calculating means to calculate a longitudinal enlargement rate My=y/b and (x) and (a) are supplied to a lateral enlargement rate calculating means to calculate a lateral enlargement rate Mx=x/a. A selecting means selects the smallest numeral among the calculated longitudinal enlargement rate My and lateral enlargement rate Mx, and maximum possible enlargement rate E characteristic to the copying machine and the selected value is used as the enlargement rate in this case to take a copy. Consequently, the image never becomes larger than the copying form.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus, and more particularly to an improvement of a copying apparatus having an editing function.

[Conventional technology]

Conventionally, when a copying device with an editing function performs trimmed copying, in which a part of the original screen is specified and copied, the image is erased using a method such as latent image erasure by irradiating a light source on the area other than the area to be copied. Therefore, the margins of the copied copy paper other than the copied portion remained blank.

[Problem that the invention seeks to solve]

However, if there are too many blank spaces on the paper for such copying, it will look bad and there will be a problem that the paper will not be fully utilized. It is an object of the present invention to solve such problems regarding the margins of copy paper in trimmed copying.

[Means for solving problems]

In order to achieve the above object, the present invention provides the following copying apparatus. That is, the present invention is a copying apparatus having an editing function and a maximum possible enlargement factor E unique to the apparatus,
A paper size detection means for detecting the length y width X size of the copy paper, a document trimming area size detection means for detecting the length and width a size of a designated trimming area of the document, and the detected copy paper and the document. Vertical enlargement rate My-y/ from each vertical size of the trimming area
a vertical enlargement ratio calculation means for calculating the horizontal enlargement ratio M Numerical value M31. calculated by both calculation means. This copying apparatus is characterized in that it has a selection means for selecting the smallest value from among the three numerical values, Mx and Mx, and a maximum possible enlargement factor E specific to this copying apparatus.

[For production]

In the above configuration, the paper size detection means detects the vertical size y and the horizontal size X of the set copy paper, and the document trimming area size detection means detects the vertical size of a specified trimming area on the document. Detect b and horizontal size a.

Among the detected numerical values y−x−b−a, y·b is calculated by the vertical magnification calculation means as follows: My=y/b, and x−a is calculated by the horizontal magnification calculation means. The horizontal expansion rate M x = x / a is calculated by:

The calculated vertical enlargement ratio hy, the horizontal enlargement reprint, and the unique maximum possible enlargement ratio E of the copying device are compared, and the smallest value is selected by a selection means. , copy that value as the magnification factor in this case.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Regarding embodiments of the present invention, how the configuration of the present invention is actually embodied will be described below with reference to the drawings, along with its operation.

FIG. 1 is a flow chart of one embodiment of the present invention. In FIG. 1, the numerical symbols in the figure indicate procedure numbers for convenience.

First, step 1 indicates a start, and a series of copy processing procedures starts by pressing a copy button (not shown) on the copying device, and thereafter, the processing automatically proceeds according to the procedures shown in the flowchart.

With the start of step 1, step 2 detects the vertical size Y and lateral size X of the copy paper 14, as shown in FIG. This copy paper 14 is of a standard size such as A4 or 84, but for convenience of calculation processing, the length is detected and stored as a numerical value.

Next, in step 3 of FIG. 1, the original 15 as shown in FIG.
The vertical size b and horizontal size a of the designated trimming area 16 above are detected and stored.

These stored numerical values are used as parameters in the magnification ratio calculation formula in steps 4 and 5 of FIG.

In other words, in step 4, the vertical size Y of the copy paper
is divided by the vertical size b of the trimming area of the document to obtain the vertical magnification rate My.

Similarly, in step 5, the horizontal enlargement ratio Mx is calculated by dividing the horizontal size X of the copy paper by the horizontal size a of the trimming area of the original document using the formula Mx=x/a.

The vertical magnification rate My and the horizontal magnification rate Mx calculated in this way are determined by following steps 6, 7, 8, and 9.
It is compared with the unique maximum magnification factor E of this copying device, and one of the three magnification factors with the smallest numerical value is selected, and the selected magnification factor is used as the copying magnification factor, and step 10. 11 or 12 for copying.

The reason why I chose the smallest value out of the three magnification ratios was to prevent this from happening, since if the image is enlarged too much, the image will not fit on the copy paper, resulting in a missing image.
This is to try to obtain a duplicate image as large as possible.

In step 6 of the selection means, a comparison is made to see if the calculated horizontal magnification factor Mx is larger than the device-specific magnification factor E, and if Mx is larger, the process is carried out in the next step 7. , otherwise, the process is performed in step 8.

In step 7, a comparison is made to see if the calculated vertical magnification factor is greater than the device-specific magnification factor E. If the vertical magnification factor My is larger, in the next step 11, the magnification factor My is greater than MY. Copying is performed using the smaller enlargement factor E unique to this device.

If, in step 7, the vertical magnification rate MY is thicker (if not, then in step 10, the image is copied using the magnification rate My for copying).

If the horizontal magnification factor MY is not larger in the means 6, a comparison is made in step 8 to see if the vertical magnification factor hy is larger than the device-specific enlargement factor E, and My
is large, in step 12 the smaller magnification Mx
Copy by.

If time is not greater than E in step 8, a comparison is made in step 9 to see if the horizontal enlargement reprint is greater than the vertical enlargement rate My, and if Mx is larger, the smaller enlargement is performed in step 10. Copy at rate My.

If the horizontal magnification factor Mx is not large in step 9, then in step 12 the image is copied at the magnification factor Mx.

In this way, the selection means 6, 7, 8, and 9 select the one with the smallest value from among the three magnification factors Mx-My-E, and select the selected magnification factor for copying the trimming area. Finish after copying as the enlargement ratio (Step 13)
do. As explained above, when the present invention is started by pressing the button on the copying machine, the size detecting means automatically detects the vertical and horizontal sizes Y and Xl of the copy paper and the vertical and horizontal dimensions of the specific trimming area on the document to be copied. Detect the sizes b and a of , and use these as parameters to calculate the vertical and horizontal magnification rates My and Mx using the magnification rate calculation means, and calculate the three magnification rates of these and the maximum magnification rate E unique to this device. The smallest numerical value selected by the selecting means can be copied as the copying enlargement ratio of the trimming area.

〔Effect of the invention〕

As described above, according to the present invention, since the paper size detection means and the original trimming area detection means are provided, the size of the set copy paper and the size of the designated trimming area of the original are detected, and these sizes are detected. Since a vertical expansion calculation means is provided, the vertical expansion rate My is calculated using the detected size, and a horizontal expansion rate calculation means is provided, so the horizontal expansion rate Mx is calculated using the detected size. The magnification ratios MY and Mx and the maximum possible magnification ratio E of this device are compared, and the smallest value among them is used as the copying magnification ratio for the trimming area, so there is no risk of the image overflowing the copy paper. Therefore, it is possible to obtain a good copy image without any defects.

In addition, for the vertical enlargement rate My and the horizontal enlargement reprint, the smallest value among the maximum enlargement rates unique to this device is used as the copying enlargement rate for the trimming area, so copies can be made at the maximum enlargement rate within the size range without missing parts. It is possible to eliminate unnecessary blank areas, make the most of the surface of the copy paper, and obtain a copy screen in which the size of the copy paper and the image are harmonized.

Furthermore, since the size detection and magnification calculation are performed automatically, the copying unit W of the present invention can be easily and quickly handled by anyone.

[Brief explanation of the drawing]

FIG. 1 is a flowchart of an embodiment of the present invention, FIG. 2 is a diagram illustrating the size of copy paper, and FIG. 3 is a diagram illustrating the trimming area size of a document. 2...Paper size detection device means, 3...
...Document trimming area detection means, 4...
Calculating means for vertical magnification MY, 5... Means for calculating horizontal magnification Mx, 6.7, 8.9... Selection means, 14... Copy paper , 15... Original, 16... Trimming area. Applicant: Mita Kogyo Co., Ltd. Representative Patent Attorney Junya Suzuki Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] A copying apparatus having an editing function and a maximum possible enlargement ratio E unique to the apparatus, comprising a paper size detection means for detecting the vertical, horizontal and x dimensions of copy paper, and a document specification. The vertical magnification rate My=y/b is calculated from the vertical size (b) and horizontal (a) size of the trimming area detected, and from the detected vertical sizes of the copy paper and the original trimming area. from the respective horizontal sizes of the detected copy paper and document trimming areas.
A horizontal magnification rate calculation means for calculating the horizontal magnification rate Mx=x/a, a numerical value My calculated by the calculation means, Mx, and a maximum possible magnification rate E unique to this copying apparatus. and selecting means for selecting the smallest numerical value from among.