JPH04115262A - Copying device - Google Patents

Abstract

PURPOSE:To obtain operability excellent in terms of human engineering by simple constitution by constituting a zoom key for setting copying power so that variable power may be different in proportion to pressing force. CONSTITUTION:The power being a copying condition, a cassette size, a register number and whether the copying machine is in the middle of copying or standby are displayed on the liquid crystal display part 1 of the control panel of the copying machine. A fixed power key 2 consists of a reduction key 2a, an unmagnification key 2b and a magnification key 2c. A zoom key 8 consists of a (-) key 8a for decreasing the power and a (+) key 8b for increasing the power and is constituted of a piezoelectric sensor whose output signal is changed in proportion to the pressing force. When the copying power is set, it is set by depressing the fixed power key 2a, 2b or 2c in the case of the fixed power, and it is set by depressing the zoom key 8a or 8b in the case of setting optional power. In the zoom key 8, the variable power is different in accordance with the pressing force and the power is largely changed by depressing the key with strong force.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus having a variable magnification function.

[Prior Art] Conventionally, a copying apparatus having a variable magnification function is provided with keys (for example, an enlargement key, a reduction key, etc.) for setting the copying magnification, and when the key is pressed once, the magnification is reduced to 1. % change,
It was possible to specify an arbitrary magnification by pressing the key and copy at that magnification. In addition, there were some models in which the magnification changed sequentially when a key was held down, and others in which the speed changed.

[Problems to be Solved by the Invention] However, in the conventional example described above, in order to set a magnification other than the fixed magnification, the magnification key must be pressed many times as described above, and if the key is kept pressed, Even when the magnification changes, you still have to keep pressing the key, which has the disadvantage of making your fingers tired.

The present invention has been made in view of the above-mentioned drawbacks of the conventional art, and its object is to provide a magnification setting device with good operability.

[Means for Solving the Problems] According to the present invention, in a copying apparatus having a variable magnification function,
It has a press key for setting the copy magnification, and by making the output signal change proportional to the pressing force on the press key, the set magnification can be specified with a simple operation.

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

FIG. 1 is a partial front view of the operation panel of a copying machine according to an embodiment of the present invention, FIG. 2 is a block diagram showing its configuration, and FIG. 3 is a diagram showing the relationship between the pressing force of the variable magnification key and the magnification change. It is.

In FIG. 1, reference numeral 1 indicates a liquid crystal display section which displays copying conditions such as magnification, cassette size, number of cassettes, and whether copying is in progress or standby is in progress.

2 is a fixed magnification key, 2a is a reduction key, 2b is a constant magnification key, and 2c is an enlargement key. 3 is the density display section, which has an LED (light-emitting diode) display in stages from "dark" to "light", and the density can be set using the density key 4. 5 is a cassette selection key for selecting the paper size. 6 is a start key, and 7 is a reset key for returning the setting state to the standard state. 8 is the zoom key, which is the (=) key 8a that decreases the magnification and the (+) key 8 that increases the magnification.
b, and is composed of a piezoelectric sensor whose output signal changes in proportion to the pressing force. 9 represents a numeric keypad, and a clear 1 stop key 1o is used to change only the set number or to interrupt copying.

Next, in FIG. 2, II is an image forming unit that forms a latent image using reflected light from the document, and forms an image on the transfer material through development, transfer, and fixing, and 12 is the same as explained in FIG. 1. 13 is a display section for displaying the setting values and operation status; 14 is a counter for counting the number of copies; 15 is a timer for setting time;
1 is a power supply, and 17 is a central control unit (CPU) that integrally controls these.

Now, when setting the copy magnification, if it is a fixed magnification, press the fixed magnification keys 2a, 2b or 2c to set it.
To set any magnification, use zoom keys 8a or 8b
Press to make settings. The zoom key 8 is composed of a piezoelectric sensor as described above, and the magnification of change varies depending on the pressing force. FIG. 3 shows the relationship between the pressing force and the magnification of change. For example, the pressing forces a, b, c, and d have the relationship B<b<c<d, so when you press the button with the pressing force of a, the magnification increases by 1, and for b it is 5, for C it is 10, and for d it is If you press it with strong force, like 50, the magnification changes greatly.

Now, if you want to set 15% from the same magnification (100%), just press the 8b key once with a pressing force near d.

Also, to set 78%, press the 8a key with a pressure near C.
Press twice and then press the 88 key twice with a pressure near a.

Therefore, when setting a desired magnification, the number of times the zoom key is pressed is reduced, and since the magnification changes according to the pressing force, excellent ergonomic operability is obtained, and setting errors are reduced. can.

[Other Examples] In the relationship between pressing force and change magnification, the magnification is 1%.

Instead of the four steps of 5%, 10%, and 50%, it may be stepless as shown in FIG.

However, for 1%, which is considered to be frequently used, a certain range of pressing force is provided as shown in the figure to improve operability.

In other words, convert the output of the piezoelectric sensor into a digital signal,
The CPU 17 converts the image shown in FIG. 4, and the CPU 17 changes the magnification according to the converted output of 3. Furthermore, a conventional zoom mechanism (such as one in which the magnification changes sequentially when the key is held down, one in which the speed changes, etc.) may be combined with the above-mentioned zoom key whose magnification changes depending on the pressing force.

[Effects of the Invention] As explained above, by configuring the zoom key for setting the copy magnification so that the change magnification varies in proportion to the pressing force, excellent ergonomic operability can be obtained with a simple configuration. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a partial front view of the operation panel of a copying machine according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of a copying machine according to an embodiment of the present invention, and FIG. 3 is a diagram showing the configuration of a copying machine according to an embodiment of the present invention. FIG. 4 is a diagram showing the correspondence between the pressing force of the variable magnification key and the magnification change of the copying machine according to another embodiment of the present invention. FIG. It is. 1 is a liquid crystal display, and 8 is a zoom key.

Claims (1)

[Claims] It has a press key for setting the copy magnification, and is applied to the press key. A copying device characterized in that a set magnification value changes in proportion to the pressing force.