JPH01102537A - Variable magnification control method for microreader/ printer or the like - Google Patents

Abstract

PURPOSE:To quickly set the magnification by constituting the title microreader/ printer so that the variable magnification is executed continuously when a variable magnification switch is depressed continuously, but the variable magnification is stopped only for a prescribed time when it reaches a set magnification. CONSTITUTION:An enlargement switch 3 for and variable magnification and a reduction switch 4 are subjected to X0.1 times variable magnification whenever they are depressed once, and brought to continuous variable magnification automatically when they are depressed continuously for some prescribed time. Also, by setting (storing) in advance some magnification, the variable magnification stops for some prescribed time in the course of continuous variable magnification, but when it has stopped at prescribed magnification, the variable magnification is shifted to the next magnification immediately by releasing the switch once and depressing it once again, thereafter, the continuous variable magnification is executed again. In this regard, the length of this stop time is set (stored) suitably. Moreover, it is desirable that the fine adjustment can be executed at every 0.1 times by depressing the switch, for instance, >=0.5sec. In such a way, some arbitrary magnification can be obtained in a short time.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a method for controlling magnification of a microreader printer having a magnification changing mechanism using a zoom lens, and is also applicable to magnification control of a copying machine, etc. It is possible.

[Prior art] In microreader printers that have a magnification change mechanism using a conventional zoom lens, there are methods in which the magnification change method changes continuously or in fixed steps. However, with the former, the set magnification is not fixed, so the magnification must be set each time, and with the latter, detailed magnification settings cannot be made, so the drawback is that it cannot accommodate the reduction ratio errors of individual microfilms. There is.

[Problems to be Solved by the Invention] In a microreader printer having a magnification changing mechanism using a zoom lens, by enabling zoom magnification control that temporarily stops at a preset magnification during continuous magnification change, This is an attempt to improve the operability when setting copying and projection magnification, and to improve the shortcomings of the conventional apparatus.

[Means for Solving the Problems] The present invention provides a means for setting copying and projection magnification of a microreader printer or the like that has a variable magnification function using a zoom lens. The purpose is to provide a function that multiplies the multiplication factor and stops for a certain predetermined time when the multiplication factor matches a preset arbitrarily set multiplication factor.

[Function] As mentioned above, if you keep pressing the variable magnification switch, the magnification will change continuously, but only when the set magnification is reached.

I configured it so that magnification stops for a certain period of time.

Even if the magnification speed is set high, the magnification will stop at the set magnification portion for a certain period of time, so even if you keep pressing the magnification switch, if you release the switch within the stop time, you will be able to reach the set magnification position. This allows you to set the switch quickly, allowing you to quickly set the magnification.

[Example] Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing an example of the operation panel of a microreader printer equipped with a magnification setting device, FIG. 2 is a flowchart showing the operating procedure when changing the magnification, and FIG. 3 is a schematic configuration circuit diagram of the device according to the present invention. , is.

In FIG. 1, an operation panel 1 includes a magnification display section 2 consisting of a seven-segment magnification display LED. An enlargement switch 3 and a reduction switch 4 for variable magnification are provided.

When the microreader printer is in standby mode after turning on the power switch, the image is projected on the screen.
The magnification is displayed on the magnification display section 2, and the state becomes ready for copying.

The operating procedure for changing the magnification of the microreader printer is as shown in the flowchart of FIG.

In this case, the zooming enlargement switch 3 and reduction switch 4 are set to 1.
Each time you press it, the magnification changes by Xo, and if you keep pressing it for a certain period of time, it will automatically change the magnification continuously.
By setting the speed at which the upper two digits of can be confirmed, magnification change can be stopped at the set magnification desired by the operator.

Also, by setting (memory) a certain magnification in advance, the magnification will stop for a certain period of time during continuous magnification, but when it stops at the predetermined magnification, release the switch once,
By pressing the button again, the magnification is immediately changed to the next magnification, and then continuous magnification is performed again.The length of this stop time can be set (memory) as appropriate.

Furthermore, it is good to be able to make fine adjustments in increments of 0.1 times by pressing a switch at certain time intervals, for example 0.5 seconds or more. - By doing this, it is possible to obtain an arbitrary magnification in a short time. can.

In addition, in the schematic configuration circuit diagram of the present invention shown in FIG.
Reference numeral 5 is a stepping motor for driving zoom lens variable power;
6 is an encoder for a zoom lens variable power signal, and 7 is a limit switch for setting a zoom lens standard.

[Effects of the Invention] As mentioned above, in the present invention, the magnification is changed continuously when the magnification switch is held down, but when the set magnification is reached, the magnification is stopped for a certain period of time. ,
Even if the magnification speed is set high, the magnification will stop at the set magnification portion for a certain period of time, so even if you keep pressing the magnification switch, you can ensure that you release the switch at the set magnification position.
The magnification can be set quickly, and the magnification can be set freely depending on the purpose.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of the operation panel of a microreader printer equipped with a magnification setting device, FIG. 2 is a flowchart showing the operating procedure when changing the magnification, and FIG. 3 is a schematic configuration circuit diagram of the device according to the present invention. , is. 1...Operation panel, 2...Magnification display section. 3...Enlargement switch, 4...Reduction switch. 5... Stepping motor for driving zoom lens variable power, 6... Encoder for zoom lens variable power signal, 7...
・・Limit switch for zoom lens standard setting.

Claims (3)

[Claims] (1) When setting the copying and projection magnification of a microreader printer etc. equipped with a variable magnification function using a zoom lens,
A magnification control method for a microreader printer, etc., characterized in that the magnification is changed continuously when a magnification switch is held down, but the magnification is stopped for a certain period of time when a set magnification is reached. (2) A magnification control method for a microreader printer or the like according to claim 1, wherein the magnification at which magnification stops for a certain period of time can be arbitrarily set. (3) A magnification control method for a microreader printer or the like according to claim 1, wherein the magnification change stop time when a set magnification is reached can be arbitrarily set.