JPH0333764A - Image forming device with maximum and minimum magnification selecting function - Google Patents

Abstract

PURPOSE:To improve the operability of an image forming device such as a copying machine by selecting a maximum or minimum magnification at a stroke regardless of a set magnification at such a time when a magnification up/down key and an input mode switching key are simultaneously used. CONSTITUTION:By simultaneously pressing a P key 5 and a magnification up key 1, the instruction of a maximum magnification setting can be executed to a CPU 16, and when the instruction is received, the CPU 16 instructs an optical system adjusting means 14 to adjust the I of an optical system 12, and simultaneously, it instructs a light source scanning means 15 to change a scanning range and scanning speed to make them proper. Namely, whatever magnification is selected, the maximum magnification can be selected at a stroke. Similarly, by simultaneously pressing the P key 5 and a magnification down key 2, the minimum magnification can be selected at a stroke. Thus, the operability of the copying machine can be improved, and the time necessary for the magnification setting can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for forming an image on a recording medium, and particularly to a copying machine that can set various copying magnifications.

(Background of the Invention) General copiers allow the user to freely change the copy magnification, and the user can gradually increase the magnification by pressing the copy magnification setting key (enlarge key, reduce key, etc.) multiple times or continuously. The desired magnification was set by changing the

(Problem to be Solved by the Invention) In order to set the maximum or minimum copying magnification in the conventional copying machine described above, in the fixed magnification mode, press the magnification up/down key, for example, four times, 1. 00x, 1.15x, 1.22x, 1.41x, 2.00x and select the maximum magnification, or 1.00x, 0.8x
The only option is to reduce the magnification sequentially to 6x, 0.82x, 0.71x, and 0.50x to select the minimum magnification.

Also, in zoom mode, hold down the magnification up/down key and increase it little by little such as 1.00x, 1.01x, 1.02x, etc. until you reach the maximum of 2.00x, or The only option is to reduce it little by little, such as 1.00x, 0.99x, 0.98x, etc., until it reaches the minimum of 0.50x.

Therefore, the operation is troublesome, and setting the magnification takes time and is inconvenient. This problem becomes particularly noticeable when attempting to select the minimum or maximum magnification from a state in which the maximum or minimum magnification has already been selected.

The present invention has been made for the purpose of eliminating the above-mentioned problems and improving the operability of image forming apparatuses such as copying machines.

(Means for Solving the Problems) The copying machine of the present invention includes a key for increasing the copying magnification, a key for decreasing the copying magnification, and an input remote control.
a switching key and a means for executing an operation designated by the operation of these keys, and the means for executing the operation is operated by a combination of the key for increasing the copy magnification and the input mode switching key. Then, the maximum magnification is set regardless of the currently set magnification, and when the key for reducing the copy magnification and the input mode switching key are operated in combination, the minimum magnification is set regardless of the currently set magnification. The magnification of the image can be set.

(Function) When the magnification up/down key and the input mode switching key are used together, the means for executing the operation detects this and selects the maximum or minimum magnification at once regardless of the magnification setting at that time.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the main part configuration of an embodiment of the present invention.

The operation panel section includes a magnification up key 1, a magnification down key 2, a magnification display means 3 for displaying the selected magnification, a numeric keypad 4, a P key 5 as an input mode switching key, and a copy key. A sheet number display means 6 is provided.

The exposure and development section includes an exposure lamp 7, a reflection mirror 8. 9.10. II, an optical system (lens) 12, a drum 13, an optical system adjusting means I4 for moving the optical system along the optical path, and a light source scanning means 15.

A CPU (central processing unit) IB centrally controls the entire operation.

In this embodiment, by pressing the P key 5 and the magnification up key 1 at the same time, the CPU 16 can be instructed to set the maximum magnification, and upon receiving this instruction, the CPU 1B instructs the optical system adjustment means 14 to The position of the optical system 12 is adjusted, and the light source scanning means 15 is instructed to change the scanning range and scanning speed to appropriate values. As a result, no matter what magnification is selected,
- You can choose the maximum magnification you want.

Similarly, by pressing the P key 5 and the magnification down key 2 at the same time, the minimum magnification can be selected at once.

In this case, magnification up key 11 magnification down key 2,
The P keys 5 are all located in a horizontal row and can be easily pressed by the user with two fingers, so there is no inconvenience.

When the magnification up key 1 or the magnification up key 2 is pressed alone, the magnification is changed stepwise or continuously as before.

FIG. 2 is a flowchart showing the control procedure of CPU TE.

CPU TE determines whether there is an input to change the copy magnification (Step 20); if not, maintains the current magnification (Step 21); if so, determines whether input using the P key 5 has been made at the same time. (Step 22).

If there is a P key input, determine whether the change increases the magnification (step 23); if it increases, determine whether the current magnification is the maximum magnification (step 24); if different, The magnification is increased to the maximum magnification at once (step 25), and if the current magnification is the maximum magnification, that magnification is maintained (step 2B).

In step 23, if the change is not to increase the magnification, it is determined whether the change is to decrease the magnification (step 27), and if the current magnification is not the minimum magnification, the minimum magnification is set all at once (steps 28, 29), If the magnification is already at the minimum magnification, that magnification is maintained (step 30).

The above is the control procedure characteristic of this embodiment.

In step 22, if there is no input using the P key, it is determined whether or not it is a request to increase the magnification.Step 3
1) Depending on whether the current magnification has already reached the maximum magnification (step 32), an instruction is given to set a higher magnification or maintain the current magnification (step 33.34).

In step 31, if the change is not to increase the magnification, it is determined whether the magnification is to be decreased (step 35); if it is to be decreased, it is determined whether the current magnification is already the minimum magnification (step 36); Depending on the result, an instruction is given to set a lower magnification or maintain the current magnification (steps 37 and 38).

(Effects of the Invention) As explained above, the present invention improves the operability of the copying machine by providing a groove bottom that allows the user to select the maximum or minimum magnification regardless of the current magnification. This has the effect of shortening the time required to set the magnification.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the main part configuration of an embodiment of the copying machine of the present invention, and FIG. 2 is a flowchart showing the control procedure of the CPU to in FIG. 1...Magnification up key 2...Magnification down key 3.
... Magnification display means 4 ... Numeric keypad 5 ... P key 6 ... Copy number display means 7 ... Exposure lamp 8, 9.10.11 ... Reflection mirror 12 ... Optical system 13. ...Drum 14...Optical system 1 adjustment means 15...Optical system scanning means 1B...CPU

Claims (1)

[Claims] A device for forming an image on a recording medium, comprising: a key for increasing the copying magnification, a key for decreasing the copying magnification, an input mode switching key, and an operation specified by the operation of these keys. and means for executing the operation, when the key for increasing the copy magnification and the input mode switching key are operated in combination, the copy magnification increases to the maximum regardless of the currently set magnification. When the magnification is set and the key for decreasing the copy magnification and the input mode switching key are operated in combination, the minimum magnification is set regardless of the currently set magnification. An image forming device with a maximum and minimum magnification selection function.