JPH0721615B2 - Copying apparatus having zoom magnification function - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus having a zoom magnification / reduction function for setting a magnification ratio based on a document size and a copy size to copy a required size.

2. Description of the Related Art Recent copying machines have been required to have a function as a manuscript making machine as they become more sophisticated, and therefore, copying machines having a zoom magnification function have been put on the market. In this type of copier, for example, the variable range of zoom magnification is set from 0.5 to 1.41, and the variable step is set to 0.01 or 0.001 in response to a request such as appropriately arranging graphs and tables in a desired space. I am able to do it.

However, even if the precision of the variable step can be improved and the scaling factor can be finely adjusted, whether or not the copied product has a desired size cannot be known unless the copy is made. Also, when a copy with a scaling factor outside the variable range is requested, the copied document is replaced as an original, and if this is repeated several times to obtain a copy of the desired size, the scaling factor for each time is changed. It was difficult to determine.

An object of the present invention is to set a scaling factor automatically when a manuscript size and a copy size are designated, or to reach the copy size when the scaling factor exceeds the variable range of the zoom scaling factor in response to the designation. An object of the present invention is to provide a copying apparatus in which the number of times a copy is repeated and the scaling factor for each copy are set.

Configuration An example of the configuration of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic view of a main part of the operation unit 1, and the zoom designation key 2 can be operated in combination with the zoom enlargement key 3 or the zoom reduction key 4. And numeric keypad 5
When the zoom magnification ratio is designated by, the magnification ratio of enlargement or reduction is electronically displayed on the display unit 6. If the manuscript size designation key 7 is operated prior to the operation of the ten keys 5, the manuscript size designated by the ten-key 5 is accepted, and if the copy size designation key 8 is operated, the copy size is similarly accepted and the display unit In 6, the scaling factor based on each designation of the original size and the copy size at this time is displayed. Further, when the zoom designation key 2 is not operated, the enlargement key 3 and the reduction key 4 can be operated to set the required magnification. Further, when the standard setting key group 9 designates the same size or standard enlargement, standard reduction, etc., these designated values are displayed on the display section 6. Power switch 10,
Clear key 11, print start key 12, counter display 13,
The interrupt key 14, the copy density designation keys 15 and 16, and the copy density index 17 are the elements that the copying machine conventionally has in its operating section.

FIG. 2 is a control block diagram, and each main functional element thereof is provided in the microcomputer. Designated input means 18
Includes the keys 3, 4, 5, 7, 8, 9 and the like of the first-time operation unit 1 and electric signal generating means for these operations. Reading means 19
Reads and stores the signal from the input means 18. The scaling factor computing unit 20 computes the scaling factor from the numerical values of the original size designation and the copy size designation designated by the designation input unit 18 when the zoom designation key 2 is operated. The discriminating means 21 discriminates whether or not the calculated scaling factor is within the maximum scaling factor of reduction or enlargement set in the copying machine. The scaling factor setting means 22 sets the optical system 23 of the copying machine to the computed scaling factor if the computed scaling factor is within the maximum scaling factor, and reduces or enlarges if it exceeds the maximum scaling factor. Similarly, the maximum magnifications are set and the display unit 6 displays them.

The operation of the configuration shown in FIG. 2 will be described below. By referring to the flow chart of FIG. 3, when the designation by each key of the operation unit 1 is inputted, it is judged whether or not the zoom designation key 2 is operated, and when there is no manipulation, the optical system 23 is designated by the standard setting key group 9. The set magnification is set, and the magnification is displayed on the display unit 6. When the print start key 12 is operated, copy processing is performed. When the zoom designation key 2 is operated, the ten key 5 is switched to function as a numerical value input for performing division. When used in combination with the original size specification key 7 or copy size specification key 8 etc., the numeric keypad 5
When the original size a and the copy size b are designated by, the value of the scaling factor x is calculated by the equation x = b / a. Return the numeric keypad 5 to the normal copy number designation. Magnification ratio x
Is within the maximum magnification set in the copying machine, the optical system 23 is set to the calculated magnification X and the magnification X is displayed on the display unit 6. When the maximum magnification is exceeded, the optical system is set to the maximum magnification and this is displayed on the display unit 6. When the print start key 12 is operated, copy processing is performed according to the set and displayed magnification.

FIG. 4 is a block diagram showing another embodiment of control.
Explaining the difference from the figure, the scaling step calculation means
When 24 is determined by the determining unit 21 that the scaling factor calculated by the scaling factor computing unit 20 exceeds the maximum scaling factor,
The necessary number of copies to reach the calculated scaling factor and the scaling factor for each copy number are calculated, and this is calculated each time the copy is performed in cooperation with the counter 25. Each time variable magnification setting means 26 comprises a discrimination means 21 and a magnification change step calculation means 24.
If the scaling factor calculated by the scaling factor computing means 20 is within the maximum scaling factor based on the result, the optical system 23 is set to the calculated scaling factor, and this is displayed on the display unit 6. When the magnification is exceeded, the optical system 23 is set to the scaling ratio for each copy calculated by the scaling step calculating means 24 for each copy, and this is displayed on the display unit 6.

The flow chart of FIG. 5 shows the control operation in FIG. 4. When the variable magnification x exceeds the maximum magnification, the required copy number n is calculated, and this number n is decremented by 1 for each copy. Therefore, the number of times n indicates the remaining number of times that copying should be executed, the scaling factor An for each number of times n is calculated for each copying number, and the optical system 23 is set to this, and the display unit 6
Is displayed in.

FIG. 6 shows the one using the light pen 27 as the designation input means 18, the scale 29 and the sensor (not shown) are provided on the side of the contact glass 28, and the original size and the copy size are set by the light pen 27. When designated, this is read by the reading means 19 and the scaling factor is calculated in the same manner as described above.

Effect As described above, according to the present invention, the scaling factor is automatically set when the original size and the copy size are designated, and when the maximum scaling factor is exceeded, the required number of copies and the scaling factor of each copy number are automatically set. Since it can be set to, the required size of the copy can be obtained by a simple operation, and the waste of redoing the copy is eliminated.

[Brief description of drawings]

FIG. 1 is a schematic view of an operating unit of a copying machine showing an embodiment of the present invention, FIGS. 2 and 4 are block diagrams showing respective embodiments of control, and FIGS. 3 and 5 are second drawings. FIG. 6 is a flowchart showing the control operation of FIG. 4, and FIG. 6 shows another embodiment of the designation input means. 5 ... Numeric keypad, 19 ... reading means, 20 ... variable magnification calculating means, 21 ... discriminating means, 22 ... variable magnification setting means, 24 ... variable step calculating means, 26 ... variable magnification setting means each time , 27 ...
… Light pen (electrically detecting device).

Claims (1)

[Claims] 1. A reading means for numerically reading a designated original size and a designated copy size; and inputting of the reading means on condition that the zoom designation key has been input and the presence of the input Receiving a signal from the scaling factor computing unit, the scaling factor is set to the copying machine and the scaling factor is set to the copying machine. A determination means for determining whether or not it is within the range, and when the maximum magnification is exceeded based on the result of the determination means, the calculation is performed by repeating copying by replacing the copy with the original. The result of the scaling step calculation means for calculating the required number of copies to reach the scaling ratio and the scaling ratio for each copy, and the determination means and the scaling step calculation means. When the magnification is within the maximum magnification, the optical system of the copying machine is set to the calculated variable magnification, or when the maximum magnification is exceeded, the number of times of copying is counted for each copy and copying is performed for each count. A copying apparatus having a zoom magnification function, which is provided with each time variable magnification setting means for setting the optical system of the machine to the magnification change of the copying times at each time magnification.