JPS60113216A - Image processor - Google Patents

Abstract

PURPOSE:To reduce the key operation man-hour in stepless setting and improve the operativity by performing magnification control on the basis of an analog A/D conversion output of copy magnification. CONSTITUTION:When a copy mode is a stepless variable magnification mode, copy magnification set with a slide variable resistor 3 is read in a microcomputer 50 and A/D-converted. Consequently, the display on a display device 25 is switched from a copy quantity display to a copy magnification display to displae data on the copy magnification for a specific time. Various copy modes are outputted to a control unit 51 by pressing a copy start key 21 and the control unit performs copying operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image processing apparatus that can make copies by changing the copying magnification steplessly.

[Prior art]

Conventionally, in an image processing device such as a copying machine, when copying at a desired magnification, the method is to input the magnification using a numeric keypad, or by using the up/down button for setting the copy magnification.
Methods such as using special keys such as the down key were adopted. Furthermore, to display the set copying magnification, a two-digit to four-digit display for displaying the copying magnification was often used.

As described above, the conventional apparatus uses special keys and displays for setting the copy magnification, and therefore requires a large number of keys and displays. Therefore, the number of man-hours required to operate the input/output control device was large and complicated, resulting in poor operability. Furthermore, when registering an arbitrary copying magnification, it is necessary to have a set magnification storage means such as a memory, which may even increase costs.

[Purpose of the invention]

The present invention has been made to solve these conventional drawbacks, and provides an image processing device that is easy to operate and can reduce costs.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. This embodiment concerns a copying machine.

First, a copying machine according to an embodiment will be explained with reference to FIG. A document to be copied is placed on a document table glass 1 and illuminated by an illumination lamp 2. The light beam of the document scanned by this lamp 2 is transmitted through mirrors 3 and 4, a zoom lens 5, and a mirror 6.
．． The image is formed on the surface of the photosensitive drum 8 via the photosensitive drum 7 . The surface of the photosensitive drum 8 is cleaned in advance with a blade cleaner 9, and is uniformly charged with a charger 10 to have a uniform potential.

This charged photoreceptor surface is neutralized by a secondary charger 11 together with the original light image, and then uniformly exposed to light over the entire surface by an entire surface exposure lamp 12, resulting in a high-contrast electrostatic latent image on the photoreceptor surface. is formed.

This electrostatic latent image is developed by the developing device 13 and transferred to the transfer paper sent from the cassette 14 to the transfer section by the delivery roller 15 by the transfer charger f6. In the transfer section, the developed image on the surface of the photoreceptor of the photoreceptor drum 8 is transferred by corona discharge from the back surface of the transfer paper. After the transfer, the transfer paper is separated from the transfer section and sent to the fixing device 18 by the conveyance roller 17, where the image is fixed. The transfer paper after overlapping is discharged to the copy tray 19. After the transfer is completed, the toner remaining on the surface of the photosensitive drum 8 is cleaned by a blade cleaner 9, and the photosensitive drum 8 is prepared for the next copying cycle.

Note that 1a is a document table cover.

In short, this copying machine is an image processing device that forms a latent image on a photoreceptor using a light image, develops the latent image using a developing machine, and reproduces it as an image on a fed transfer paper.

FIG. 2 shows the appearance of the operation section 20 of the input/output control device in this copying machine.

In the figure, 21 is a copy start key, 22 is a stop/clear key that serves both to stop copying and clear the number of copies, 23 is a numeric keypad for setting the number of copies, and 24 is a display that displays the status of the copying machine, such as when there is no jammed paper. vessel,
25 is a display device that also displays the number of copies and the copy magnification;
6 and 39 are indicators and setting keys (hereinafter referred to as A keys) for displaying automatic density copy mode, 27 and 28 are slide volume keys for density adjustment (hereinafter referred to as slide VR keys), and 29 is equal magnification copy mode. The designation key (hereinafter referred to as the same size key), 30 is the variable size copy mode designation key (
Hereinafter referred to as the variable magnification key. ), 31 is a copy magnification display key (hereinafter referred to as a key), 32 is a same magnification copy mode indicator,
33, 34, 35 are variable magnification copy mode indicators, 36 is a slide volume key (hereinafter referred to as slide VR key) for setting arbitrary copy magnification, 37 is a scale for copy magnification, 38
is an arbitrary magnification ratio copy mode indicator.

FIG. 3 is a block diagram showing the control circuit of the input/output control device. The same or equivalent parts as in FIG. 2 are given the same reference numerals.

In the figure, 50 is an input/output control unit, which is composed of a main microcomputer. 51 is a control unit that controls the copying operation. The microcomputer 50 has various keys 21 to 23 .
29-31.39 and the display 25, 26.32-35. according to the input instructions from the slide VR keys 27-29.
38 and displays them, and also sends signals necessary for the copying operation to the control unit 51 that controls the copying operation, or conversely receives signals from the control unit 51 and displays them on the display 24.
Display the output in . Note that the microcomputer 50 is
An analog/digital converter is built in to convert the analog signals of the slide VRs 27 and 28 into digital signals.

Next, the operation of the input/output control device will be explained with reference to FIGS. 2 to 5, focusing on the operation of the microcomputer 50. FIG. 4 is a flowchart showing the control system of the input/output control device, and FIG. 5 is a 70-chart of the subroutine in FIG. Reference numerals common to both figures indicate the same parts.

In each figure and the following description, (101), (102
)... is step 101. Represents step 102 old. First, when the power is turned on, the standard copying mode is set (101). In this mode, the number of copies displayed on the display 25 is "1", the copy mode is automatic density copying, the same magnification mode, and the displays 26 and 29 are lit. The various keys on the operation unit 20 are read in (103), and the types of keys are determined in (104) to (112). When the setting of the number of copies is detected by the numeric keypad 23 (105), the set number of copies data is set in the memory (152).

When the number of copies is set using the numeric keypad 23, overflow is set (154), and the subsequent numeric keypad 23
input is ignored (151). Overflow is set by clear key 22 (164). stop/
When the carrier key 22 is detected (106), it is determined whether copying is in progress or not based on a signal from the control unit 51 for copy control (161), and if copying is not in progress, the number of copies data is cleared to "1". and displayed on the display 25 (163). If copying is in progress, the copy designation is reset to the control unit 51 (165), a copy stop command is issued, and the copy number data is set to the initial set number of copies (166), which is displayed on the display 25 (167).
). When the A key 39 is pressed (107), if it is in A mode (181), it is reset to A mode (18
3) If the mode is not A mode (181), it is set to A%-mode (182). This mode information is then output to the control unit 51.

When it is detected that the same size key 29 has been pressed (108)
, the same magnification mode is set, and the same magnification copy mode indicator 3
2 (211). When it is detected that the zoom key 30 has been pressed (109), the current mode is changed to 1. It is determined which mode it is in (191L (193), (
195), (197), in case of same size mode, reduction 2
The mode is set and the same magnification copy mode indicator 35 lights up.192) In the case of reduction 2 mode, reduction 1 mode (194), in the case of reduction 1 mode, enlargement mode (196), enlargement mode In case of continuously variable magnification mode (
198), in the case of stepless magnification mode, reduction 2 mode (
192) are set respectively, variable magnification copy mode display 33, 34, 35 and arbitrary variable magnification copy mode display 3.
8 lights up. That is, each time the magnification key 30 is pressed, the magnification mode can be switched in the order of reduction 2 mode → reduction 1 mode → enlargement mode → stepless magnification mode → reduction 2 mode → etc. .

When it is detected that the copy magnification display key 30 has been pressed (
110), (212), and magnification data according to the copy mode is displayed on the display 25 (213).

If the copy magnification display key 31 is not pressed, data on the number of copies is displayed on the display 25 (214).

On the other hand, if the copy mode is stepless magnification mode (1
11), (119), the copy magnification set by the slide volume 36 is read. The magnification range of the stepless variable magnification in this embodiment is 65 to 142 inches, as shown in FIG. If there is a change in the value read by slide VR 35 compared to the previous value (222), the read copy magnification data is set in memory, and the display on display 25 changes from copy number display to copy magnification display. Switch to . (22
3) At this time, a timer that determines the time for displaying the copy magnification data is started (224). Slide VR36
If there is no change in the read value, wait for the timer set in (224) to end (225), and display the display 25.
The displayed content changes to copy number data (226).

Even if the variable slide VR36 changes during the timer setting time, the copy magnification display will change according to the read value and the timer will restart each time (22
4).

In this way, when the slide VR 36 is moved in the continuously variable magnification mode and the copy magnification is changed, the contents of the display 25 are automatically switched to the copy magnification display, and this display is maintained for a certain period of time. Ru.

In this embodiment, the time is set to about 2 seconds, but since it also serves as a display, the practical range is approximately 1 second to 5 seconds.

When it is detected that the copy start key 21 has been pressed (1
12), outputs various copy modes to the control unit 51 (241), and outputs a copy start instruction to the control unit 51 (242). The control unit 51 controls the copying operation according to these output signals (not shown). The status of the copying machine is displayed on the display 24 according to the signals from the control unit 51 (121).

When copying starts and is in progress (104), 5UB
When the routine A is entered and the stop key 22 is detected (131), the stop key processing routine (SU
BC) is performed and when the A key 39 is detected, an A key processing routine (SUBD) is performed. Further, when a copy count instruction signal from the control unit 51 is detected (133), "1" is subtracted from the copy number data and displayed on the display 25 (134) the copy number data is "O". If the number of copies (135L) is restored to the set number of copies and displayed (136), the copy instruction to the control unit 51 is reset (135L).
7) Copying stops.

In this way, during copying, press the stop key 22 and the A key 39.
It constantly detects it, performs the above-mentioned processing, and operates a copy counter to determine whether to stop copying. Furthermore, a copy density change during copying is accepted (102) and output to the control unit 51.

Further, by incorporating a routine 5UBG for detecting the key 31 into the routine 5UBA during copying, it is possible to display the copy magnification by pressing the key 31 during copying.

In this embodiment, the display 25 is a two-digit display, so when copy magnification data is displayed by changing the keypad 31 or slide volume 36, the lower two digits are displayed. In this case, the copy magnification range is 65
~142%, so displaying the last two digits not only does not cause any inconvenience, but also has the advantage of being cheaper in terms of cost.

In this embodiment, the copy magnification is displayed using the copy number display, but it may also be displayed as an error display or a message display.

〔Effect of the invention〕

As explained above, according to the present invention, there are provided a copy magnification output means for outputting an analog value according to an input copy magnification, an analog/digital conversion means for converting the analog value into a digital value, and Since the copying magnification control means is provided to control the copying magnification according to the output from the means, it is not necessary to use many rows of special keys such as a specific numeric keypad or up/down keys when copying at an arbitrary copying magnification. However, a single display means can switch between displaying multiple magnifications and displaying the number of copies. therefore,
The number of man-hours required to operate the input/output control device is reduced, and operability is improved accordingly. Further, according to the present invention, when registering an arbitrary copying magnification, it is possible to register it using a slide volume without using a memory or the like, so that costs can be reduced accordingly.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a copying machine shown as an embodiment of the present invention, FIG. 2 is an external view of the operation section of the input/output control device in the copying machine shown in FIG. 1, and FIG. A control circuit block diagram of the input/output control device in the copying machine, FIG. 4 is a control flowchart of the input/output control device, and FIG. 5 (A) to (W)
is a control flowchart of the subroutine in FIG. 4. 20......Operation unit 25 of the human output control device
...Display 27.28...Slide volume key 29 for density adjustment
.......Equal magnification copy mode specification key 30...
...... Variable magnification copy mode specification key 31 ...
...Copy magnification display keys 33, 34, 35...
...Variable magnification copy mode indicator 36...Slide volume key 38 for setting arbitrary copy magnification......Variable magnification copy mode indicator 5
0......Microcomputer 51...
......Control unit Fig. 5 (-5-) (S)

Claims (2)

[Claims] (1) A copy magnification output means that outputs an analog value according to the input copy magnification, an analog/digital conversion means that converts the analog value into a digital value, and a copy magnification that is controlled according to the output from the analog/digital conversion means. An image processing apparatus 0 equipped with a copy magnification control means for (2) The copy magnification output means must be a variable resistor.