JPH01102538A - Zoom variable magnification control method in microreader/printer - Google Patents

Abstract

PURPOSE:To quickly and exactly obtain a desired magnification by bringing the magnification proximate to the desired magnification by operating a switch subjected to variable magnification at every 0.1 time, thereafter, bringing a switch for a fine adjustment subjected to variable magnification at every 0.025-0.05 times, to switching operation. CONSTITUTION:A variable magnification operation at the time of a normal mode is executed by depressing an enlargement switch 4 or a reduction switch 5, and its method adops a mechanism by which the variable magnification is executed at every 0.1 times whenever the enlargement switch (or the reduction switch) is depressed once, and when the switch is depressed continuously, a zoom lens moves only during that time, and when the switch is released, the movement of the lens stops. In addition, by operating the switch for the fine adjustment subjected to variable magnifications at every 0.025-0.05 times, a desired magnification is obtained exactly.

Description

DETAILED DESCRIPTION OF THE INVENTION A. OBJECTS OF THE INVENTION [Industrial Field of Application] The method of the present invention relates to a zoom lens control method for a microreader printer equipped with a zoom lens-based zoom mechanism.

[Prior Art] A microreader printer equipped with a magnification mechanism using a known zoom lens has a magnification variable means (for fine adjustment).
There was no one with a mode of 0.05 times or less). As a result, detailed magnification settings could not be made, and it was not possible to change the magnification to accommodate the reduction rate error inherent in each microfilm.

[Problems to be Solved by the Invention] Therefore, in order to eliminate the above-mentioned inconvenient functions in the conventional device, the present invention provides a microreader printer having a variable magnification mechanism using a zoom lens, in addition to the known variable magnification mode. By adding a fine adjustment mode that can be operated separately in parallel with this, no matter when changing the magnification,
At present, it is possible to freely change the desired copy size by making finer adjustments to the magnification, and also to accommodate the reduction ratio error inherent in each microfilm.
It is an object of the present invention to provide a zoom magnification control method for a microreader printer that can correct this.

Another object of the present invention is to improve the operability of the league printer when setting copying and projection magnifications by simultaneously using a mode in which the magnification is changed by 0° and a fine adjustment mode in the printer.

Structure of the Invention [Means for Solving the Problems] The method of the present invention has the following structural requirements in order to achieve the above-mentioned object.

However, "every 0, 1 times" described below is a representative display of magnifications adjacent to the same magnification, and slight differences in magnification values are acceptable as long as it does not depart from the purpose of the present invention. It should be.

(1) In a microreader printer equipped with a variable magnification mechanism using a zoom lens, to set the copying and projection magnification, operate the switch that changes magnification in 01x increments to set the magnification close to the desired magnification, and then Plus 0.025
A method for controlling zoom magnification in a microreader printer, characterized in that an accurate desired magnification is obtained by operating a fine adjustment switch that changes magnification in increments of ~0.05.

(2) The microcontroller according to item (1) above, in which the magnification speed changes by 2 times per second by holding down a switch that changes magnification in steps of 0.1 times for 2 seconds or more. A zoom magnification control method in a reader printer.

[Operation] The details are described below [Explanation is given in the section ``Example'', so please refer to it.

[Example] Fig. 1 shows an example of the operation panel of a microreader printer equipped with a magnification setting device.
A mode changeover switch 3, a zooming enlargement switch 4, and a zooming down switch 5 are arranged below D2.

After turning on the power, the microfilm image is projected on the screen, and the current magnification is displayed on the magnification display LF, D 1
will be displayed and ready for copying.

A flowchart of the operating procedure at the time of changing the magnification is as shown in the second figure. As mentioned earlier,
This league printer has a normal mode in which the magnification is changed in 0.1 times increments, and a fine adjustment mode in which the magnification is changed more finely. Switching between these two modes is performed by a mode changeover switch 3 on the panel shown in FIG. 1, and the mode at that time is displayed by a mode display LED 2. Each time the mode changeover switch 3 is pressed, the mode is switched between normal and fine adjustment modes.

The magnification operation in the normal mode is performed by pressing the enlargement switch 4 or the reduction switch 5, and the method is to change the magnification by 0.1 times each time the enlargement switch (or reduction switch) is pressed - times, It uses a mechanism in which when you hold down the switch, the zoom lens moves for that period of time, and when you release the switch, the lens stops moving.

On the other hand, when in fine adjustment mode, the magnification changes continuously when you hold down the enlargement switch (or reduction switch), just like in normal mode, but when you do not hold down the enlargement switch (or reduction switch), the magnification changes by a minute amount each time you press it. only.

Here, the width of the fine adjustment is particularly important because there is a paper size display on the reader, and in order to adjust the size of the display and the image within an error range of 2 + u, for example, the width of the paper size is A4
In this case, fine adjustment of magnification of 0.05 times or less is required.

As mentioned above, by having two variable magnification modes,
If you want to set the magnification using the normal mode and then adjust the magnification (copy size) more finely, you can efficiently create accurate copies by switching to the fine adjustment mode.

The above-mentioned embodiment of the zoom magnification control method of the present invention is merely an explanation of one preferred embodiment of the present invention.
The description of the specific structure does not necessarily limit the technical scope of the present invention. In addition to the above-mentioned embodiments, means for embodying the method of the present invention may include design changes within the technical level at the time of filing, addition of known means, and diversions, as long as they do not depart from the purpose of the present invention. All of them belong to the technical scope of the present invention.

C. Effects of the invention As described above, according to the method of the present invention, in a microreader printer equipped with a variable magnification mechanism using a zoom lens, the normal mode is used until the desired magnification is approached, and then the rapid method is used as necessary. The magnification can be adjusted using the magnification changing method, and finally the magnification can be adjusted in finer detail using the magnification changing method in the fine adjustment mode, so you can quickly and accurately obtain the desired copy size. . Therefore, it is possible to accurately deal with reduction ratio errors specific to individual microfilms, and to correct these errors by changing the magnification.

[Brief explanation of the drawing]

FIG. 1 is a front view of an example of an operation panel of a microreader printer equipped with a magnification setting device, and FIG. 2 is a flowchart of the present zoom magnification control method. 1...Magnification display LED, 2...Mode display LED
D, 3...Mode selection switch, 4...Enlargement switch for zooming, 5...Reduction switch for zooming.

Claims (2)

[Claims] (1) In a microreader printer equipped with a variable magnification mechanism using a zoom lens, to set the copying and projection magnification, a switch that changes magnification in 0.1x increments is operated to set the magnification close to the desired magnification. After that, plus 0.02
A method for controlling zoom magnification in a microreader printer, characterized in that an accurate desired magnification is obtained by switching and operating a fine adjustment switch that changes magnification in increments of 5 to 0.05. (2) By holding down a switch that changes magnification in increments of 0.1 times for 2 seconds or more, the speed of magnification changes so that the magnification changes in increments of 2 times per second. A method for controlling zoom magnification in a microreader printer.