JP2995691B2 - Color copier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color copying machine having a color adjusting function.

[0002]

2. Description of the Related Art Conventionally, a color copying machine of this type has a mode key for setting a color adjustment mode for performing color adjustment, a color selection key for selecting a color to be adjusted in the color adjustment mode, and a selection key. An operation panel having an adjustment key for making the color darker or lighter is provided. When the mode key is pressed, the mode shifts to the color adjustment mode. When the color selection key is pressed in this state, the color of the color is changed. The mode shifts to the adjustment mode, and in this state, the adjustment key is configured to adjust the density of the color.

When the density is adjusted in the color adjustment mode, the density can be controlled by controlling the exposure voltage of the light source, the charging voltage of the charging device, and the developing bias of the developing device. Therefore, when copying a special document such as an extremely intermediate color document or a document with high density on the entire surface,
The recording color can be adjusted according to the original image.

[0004]

However, since a color copier usually also functions as a black-and-white copier, it is necessary to select various functions and adjust each state of the functions. There is a problem in that the number of keys and the number of indicators increase, and the operation for copying a special document is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a color copying machine capable of performing color adjustment with a simple operation by reducing the number of keys on an operation panel and the number of displays. I do.

[0006]

In order to achieve the above object, a first means is to select a color adjustment mode and one first key for selecting a color to be adjusted in the color adjustment mode. A second key for adjusting the density of each color, first storage means for storing whether or not the color adjustment mode is set, and storing the order of the adjusted colors; and Second storage means for storing the adjusted density of each color, and displaying the density of each color
A color adjustment mode is set when the first key is operated in a state where the color adjustment mode is not set in the first storage means. The mode is shifted to the adjustment mode of the first color in the stored order, and is stored in the second storage means.
Read the density of each color and adjust the read density
When the first key is operated in the state where the color adjustment mode is set in the first storage means, the display is changed to the next color adjustment mode. Shift to the second mode in each color adjustment mode.
And the color adjusting means for resetting the color adjustment mode when the first key is operated in the last color adjustment mode. It is characterized by having.

[0007]

The second means is characterized in that the color adjusting means of the first means sets the density of each color in the second storage means to a reference density at power-on, at a mode clear key or at an automatic reset. I do.

The third means is that the color adjustment means of the first and second means sets the density of each color in the second storage means to a reference density after a predetermined time has elapsed after the color adjustment mode is reset. It is characterized by setting.

[0010]

According to the first means, the color adjustment mode can be selected by the first key when the color adjustment mode is not set, and the first means can be selected when the color adjustment mode is set. The adjustment color can be selected with the 1 key, and the density of each adjusted color is displayed.
I do. Therefore, color adjustment can be performed with a simple operation by reducing the number of keys and the number of indicators on the operation panel.

[0011]

In the second means, when the power is turned on, the mode clear key or the automatic reset is performed , the density of each color in the second storage means is set to the reference density, so that the adjustment data can be cleared by the user's will. .

[0013] In the third means, the concentration of each color in the second storage means is set to the reference density after a predetermined period of time after the color adjustment mode is reset, thus, it is automatically cleared adjustment data it can.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of a color copying machine according to the present invention, FIG. 2 is a plan view showing the configuration of the operation unit of FIG. 1, and FIG. 3 is a detailed configuration of a main part of the operation unit of FIG. FIG. 4 is a cross-sectional view showing the overall configuration of the color copier, FIG. 5 is a flowchart for explaining the main operation of the CPU in FIG. 1, and FIG. 6 is a detailed black / full color key control routine in FIG. Flowchart for explaining the operation,
FIG. 7 is a flowchart for explaining a detailed operation of the single color key control routine of FIG. 5, FIG. 8 is a flowchart for explaining a detailed operation of the mode clear key control routine of FIG. 5, and FIG. 9 is a flowchart of FIG. FIG. 10 is a flowchart for explaining the detailed operation of the auto reset control routine. FIG. 10 is a flowchart for explaining the detailed operation of the color adjustment / color selection key control routine of FIG.
1 is a flowchart for explaining the detailed operation of the color adjustment light key control routine of FIG. 5, and FIG. 12 is a flowchart for explaining the detailed operation of the color adjustment light key control routine of FIG.

In FIG. 1, a CPU (central processing unit) 1
Reference numeral 00 controls the entire color copying machine of the present embodiment, and particularly controls color adjustment as shown in FIGS.
The program of the CPU 100 is stored in a ROM (Read Only Memory) 101 in advance, and the RAM 102
It has a work area for the CPU 100. The operation unit 103
As shown in detail in FIG. 2 and FIG. 3, an input key 103a for performing various settings and a display 103b for displaying various settings are provided, and are connected to the CPU 100 via the serial port 104.

The input key 103a of the operation unit 103 is shown in FIG.
As shown in FIG. 3, a black / full color selection key 2-1 for selecting black-and-white copying or full-color copying,
Single color key 2 for selecting one of the colors (single color mode) used in full color copying
-4, a color adjustment / color selection key 2-7 which also serves as a key for selecting a color adjustment mode and a key for selecting a color to be adjusted in the color adjustment mode, and a "light" key for thinning colors 2-11, a "body" key 2-12 for darkening the color, and a mode clear key 2-6.

A display 103b of the operation unit 103 has a copy mode display unit 2-2, 2-3 for displaying that black-and-white copy and full-color copy are selected, and cyan, blue, magenta, red, yellow, A single color display 2-5 for displaying that each single color mode of green is selected, and a cyan display unit 2 for displaying that each of the cyan adjustment mode, magenta adjustment mode, and yellow adjustment mode are selected. -8,
It has a magenta display section 2-9 and a yellow display section 2-10. The display 103b also includes, as shown in detail in FIG.
Density display sections 2-C-1 to 2-C-7 for displaying the cyan, magenta, and yellow densities adjusted by the light key 2-11 and the dark key 2-12, respectively, in seven levels;
It has 2-M-1 to 2-M-7 and 2-Y-1 to 2-Y-7. That is, the center density of cyan, magenta, and yellow in this embodiment is “4”.

Next, the overall structure and operation of the color copying machine of this embodiment will be described with reference to FIG. A document image on the document table 1 is guided to a color separation filter 7 by first to third mirrors 2 to 4, a lens 5, and a fourth mirror 6, and separated into three colors of R, G, and B by the color separation filter 7. Thus, an electrostatic latent image of each color is formed on the photosensitive drum 8.

The photosensitive drum 8 rotates in the clockwise direction in the figure, around which the charger 9, the eraser 10, and the B / W developing roller 1 for black-and-white copying are arranged along the rotating direction.
1, a Y developing roller 12 for yellow, an M developing roller 13 for magenta, a C developing roller 14 for cyan, a transfer drum 15, and a cleaning roller 16 are arranged.

The transfer drum 15 rotates in the counterclockwise direction in the figure, around which the recording paper conveyed from the lower left in the figure is wound. In the case of full-color copying, the transfer drum 15 rotates three times to superimpose each toner image on the recording paper. Transcribe. Around or inside the transfer drum 15, a transfer charger 16, a separation charger 17, AC neutralization chargers 18 and 19, and a DC neutralization charger 20 and 21 are arranged.

When black-and-white copying is selected by the black / full color selection key 2-1 shown in FIGS. 1 to 3, the original image on the original table 1 is scanned once by the optical systems 2 to 7 and the photosensitive drum 8 is scanned. Is rotated once to form a black and white toner image on the photosensitive drum 8, and the transfer drum 15 is rotated once to be transferred to the recording paper.

On the other hand, a black / full color selection key 2-
If full color copying has been selected by 1,
The original image on the original platen 1 is scanned three times by the optical systems 2 to 7, and the photosensitive drum 8 rotates three times to form cyan, magenta and yellow toner images on the photosensitive drum 8, respectively. The image is superimposed and transferred onto the recording paper three times.

Next, the operation of the above embodiment, in particular, the operation of the CPU 100 will be described with reference to FIGS. In step S1 shown in FIG. 5, first, after initialization, in subsequent step S2, the set densities of cyan, magenta, and yellow in the RAM 102 are reset to the central density "4".

Next, in steps S3 to S9, a black / full color key control routine as shown in detail in FIG. 6, a single color key control routine as shown in detail in FIG. 7, and a mode clear key control as shown in detail in FIG. Routine, an auto reset control routine as shown in detail in FIG. 9, a color adjustment / color selection key control routine as shown in detail in FIG. 10, a color adjustment body key control routine as shown in detail in FIG. 11, and FIG. The color control light key control routine is executed.

Next, the detailed operation of the black / full color key control routine shown in step S3 will be described with reference to FIG. When the black / full color selection key 2-1 is pressed in the black mode, step S3-1,
The process proceeds from step S3-2 to step S3-3 and the following steps.
Is pressed, steps S3-2 to S3-
Branches to 7 or less.

When the full color mode is selected,
The black mode set in the RAM 102 is reset (step 3-3), and the black mode display section 2-
2 is turned off (step S3-4), the full color mode is set in the RAM 102 (step 3-5), and the full color mode display section 2-3 is turned on (step S3-
6).

On the other hand, when the black mode is selected, the full color mode and the single color mode set in the RAM 102 are reset (step S3-
7) The single color mode display section 2-5 is turned off (step S3-8), and the black mode is set to the RAM 102.
Is set (step S3-9), and the black mode display section 2-2 is turned on (step S3-10).

Next, the detailed operation of the single color key control routine in step S4 shown in FIG. 5 will be described with reference to FIG. Single color key 2- shown in FIGS. 1 and 2
When button 4 is pressed, steps S4-1 to S4 are performed.
The process proceeds to -2, where it is determined whether the single color mode is currently set. If the single color mode is currently set, the process proceeds to step S4-3. If the single color mode is not currently set, the process branches to step S4-4 and the subsequent steps.

In step S4-3, each time the single color key 2-4 is pressed, the color mode shifts in the order of cyan, blue, magenta, red, yellow, and green. On the other hand, in step S4-4 and subsequent steps, the currently set black mode or full color mode is reset (S4-4), and the black mode display unit 2-2 or the full color mode display unit 2-3 is turned off (S4-4).
5) Then, the cyan single color mode is set (step 4-6), and the cyan single color display section 2-5 is turned on.

Next, the detailed operation of the mode clear key control routine in step S5 shown in FIG. 5 will be described with reference to FIG. When the mode clear key 2-6 shown in FIGS. 1 and 2 is depressed, steps S5-1 to S5-2 are performed.
The process proceeds to reset the currently set full-color mode or single-color mode (step S5-
2), the currently set full color mode display section 2-
3 or the single color display section 2-5 is turned off (step S5-3), the color adjustment mode is reset (step S5-4), and cyan, magenta, and yellow output buffers (dy-Cyan, dy-) in the RAM 102 are output.
The respective set densities of “Magenta, dy-Yellow” are reset to the central density “4” (step S5-5).

Next, the detailed operation of the automatic reset control routine in step S6 shown in FIG. 5 will be described with reference to FIG. This routine shifts to the case where none of the keys shown in FIGS. 1 to 3 is pressed for, for example, about 1 minute to 3 minutes (step S6-1). In this case, similarly to the mode clear key control routine, the currently set full color mode or single color mode is reset (step S6-2), and then the currently set full color mode display section 2-3 or single color mode is displayed. Color display section 2-
5 is turned off (step S6-3), the color adjustment mode is reset (step S6-4), and the set densities of the cyan, magenta, and yellow output buffers in the RAM 102 are reset to the central density "4" (step S6).
-5).

Next, the detailed operation of the color adjustment / color selection key control routine in step S7 shown in FIG. 5 will be described with reference to FIG. If the full-color mode has been set, the process proceeds from step S7-1 to step S7-2 and below. If the full-color mode has not been selected, the process jumps from step S7-1 to step S7-15 and below. In step S7-2, when the color adjustment / color selection key 2-7 is pressed, the process proceeds to step S7-3 and the subsequent steps. Therefore, the color adjustment is not performed in the monochrome mode or the single color mode.

In steps S7-2 and S7-3, when the color adjustment / color selection key 2-7 is pressed while the color adjustment mode is not set in the RAM 102,
First, the cyan display section 2-8 is turned on (step S7-
4) The color adjustment mode is set (step S7-).
5), a storage buffer (dy-CyanB) of the RAM 102
UFF, dy-Magenta BUFF, dy-Ye
(low BUFF) of each color are displayed on the density display sections 2-C-1 to 2-C-7 and 2-M-1 to 2-M-, respectively.
7, 2-Y-1 to 2-Y-7 (step S7-
6) Also, the output buffer is set in the output buffer of the RAM 102 (step S7-7), and the process proceeds to the density adjustment routine shown in FIGS.

On the other hand, in steps S7-2 and S7-3,
When the color adjustment / color selection key 2-7 is pressed while the color adjustment mode is set in the RAM 102,
The process proceeds to step S7-9 and subsequent steps. If the current adjustment color is magenta (step S7-9), the magenta display section 2-9
Is turned off (step S7-10), and the yellow display unit 2
-10 is turned on (step S7-11), and the process proceeds to the density adjustment routine shown in FIGS. When the current adjustment color is cyan (step S7-12), the cyan display unit 2-8 is turned off (step S7-13), and the magenta display unit 2-9 is turned on (step S7-14).
The process proceeds to the density adjustment routine shown in FIGS.

When the current adjustment color is the last yellow, the process proceeds from step S7-12 to step S7-15 and subsequent steps. First, a cyan display section 2-8 and a magenta display section 2-
9 and all of the yellow display section 2-10 are turned off (step S7-15), and the color adjustment mode is reset (step S7-16). Next, in steps S7-17, S7-18, and S7-19, each of the adjustment data for cyan, magenta, and yellow is stored in RA
From the output buffer of M102 to the storage buffers (db-1C, db-2C, db-3C) of RAM 102,
In a succeeding step S7-20, the reference density “4” is set to R
The data is stored in the output buffer of the AM 102.

Therefore, in this case, the respective adjustment data of cyan, magenta, and yellow are stored in the storage buffers (db-1C, db-2C, db-3C) of the RAM 102, and at the time of actual copying, Copying is performed at the reference density "4" of the output buffer.

Next, the detailed operation of the color adjustment body key control routine in step S8 shown in FIG. 5 will be described with reference to FIG. "Koku" key 2 in color adjustment mode
When -12 is pressed, the process proceeds from step S8-1 to step S8-2 and step S8-3. When cyan is selected, the storage buffer db-
The cyan adjustment value of 1C is incremented by one, and the adjustment value is displayed on the cyan density display units 2-C-1 to 2-C-7 (steps S8-3 to S8-6), and magenta is selected. In the state, the storage buffer db-2 of the RAM 102
The magenta adjustment value of C is incremented by one, and the adjustment values are displayed on the magenta density display sections 2-M-1 to 2-M-7 (steps S8-7 to S8-10), and yellow is selected. In the state, the storage buffer db of the RAM 102
-3C is incremented by one and the adjusted values are displayed on the yellow density display sections 2-Y-1 to 2-Y-7 (steps S8-7, S8-11 to S8-1).
3).

Next, the detailed operation of the color adjustment light key control routine in step S9 shown in FIG. 5 will be described with reference to FIG. In this case, similarly, when the “light” key 2-6 is pressed in the color adjustment mode, the steps S9-1 to S9-2 and S9-3 are performed.
Proceed to. When cyan is selected, the RAM 10
2, the cyan adjustment value of the storage buffer db-1C is decremented by one, and the adjustment value is displayed on the cyan density display section 2-C-1.
To 2-C-7 (steps S9-3 to S9-
6) In the state where magenta is selected, the RAM 10
, The magenta adjustment value of the second storage buffer db-2C is decremented by one, and the adjustment value is displayed in the magenta density display section 2-M.
-1 to 2-M-7 (Steps S9-7 to S9-
10) In the state where yellow is selected, the RAM 1
02, the yellow adjustment value of the storage buffer db-3C is decremented by one, and the adjustment value is decremented by the yellow density display unit 2-
Y-1 to 2-Y-7 are displayed (steps S9-7, S9).
9-11 to S9-13).

Therefore, according to the above embodiment, the color adjustment mode can be selected only by the color adjustment / color selection key 2-7, and the adjustment color can be selected. Color adjustment can be performed with a simple operation by reducing the number and the number of indicators.

Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a flowchart for explaining the main operation of the second embodiment of the color copying machine according to the present invention, and FIG. 14 is a flowchart for explaining the detailed operation of the color adjustment reset control routine of FIG. In this embodiment, a color adjustment reset control routine (step S10) is added as shown in FIG. 13, and the operations shown in steps S1 to S9 are the same as those in the first embodiment, so the same step numbers are given. The description is omitted.

Next, a detailed operation of the color adjustment reset control routine will be described with reference to FIG. When the color adjustment mode is not set in the RAM 102 (step S10-1), a timer for resetting the color adjustment data, for example, 5 seconds elapses (step S10).
10-2), the process proceeds to step S10-3, and the RAM 102
Of the storage buffers db-1C, db-2C, db-3C are reset to the reference density "4".

Therefore, according to this embodiment, when the state in which the color adjustment mode is not set for 5 seconds continues for 5 seconds, the reference density can be automatically reset to "4".

[0043]

As described above, according to the first aspect of the present invention, a color adjustment mode is selected, and one first key for selecting a color to be adjusted in the color adjustment mode is provided. A second key for adjusting the density, first storage means for storing whether or not the color adjustment mode is set, and storing the order of the adjustment colors; and each color adjusted by the second key. Storage means for storing the density of each color, and a display means for displaying the density of each color.
When the first key is operated in a state where the color adjustment mode is not set in the first storage means , the color adjustment mode is set, and the first order of the order stored in the first storage means is set. When the mode is changed to the color adjustment mode , the second
The density of each color stored in the storage means is read, and the reading is performed.
The detected density is used as the initial value for adjustment, and the display
Displayed, in the case where the first key while the color adjustment mode is set is operated in the first storage means, the processing proceeds to the next color adjustment mode of the color adjusting mode odor Te second the density of each color, which is adjusted by the key stored in the second storage unit, the first key Te adjustment mode smell of the last color is when it is operated, and a color adjusting means for resetting the color adjustment mode Therefore, the number of keys and the number of indicators on the operation panel can be reduced .
The density of each color adjusted by the key is displayed on the display
Therefore, color adjustment can be performed with a simple operation.

[0044]

The invention according to claim 2, set <br/> color adjustment means in claim 1, when the power is turned on, the reference density the density of each color of the second storage means in the mode clear key or auto reset Therefore, the adjustment data can be cleared by the user's will.

The invention according to claim 3 is directed to claims 1 and 2.
Since the color adjustment unit sets the density of each color in the second storage unit to the reference density after a predetermined time has elapsed after the color adjustment mode is reset, the adjustment data can be automatically cleared.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a color copying machine according to the present invention.

FIG. 2 is a plan view illustrating a configuration of an operation unit in FIG. 1;

FIG. 3 is an enlarged plan view illustrating a detailed configuration of a main part of an operation unit in FIG. 4;

FIG. 4 is a cross-sectional view showing the entire configuration of the color copying machine.

FIG. 5 is a flowchart illustrating a main operation of a CPU in FIG. 1;

FIG. 6 is a flowchart illustrating a detailed operation of a black / full color key control routine of FIG. 5;

FIG. 7 is a flowchart illustrating a detailed operation of a single color key control routine of FIG. 5;

FIG. 8 is a flowchart illustrating a detailed operation of a mode clear key control routine of FIG. 5;

FIG. 9 is a flowchart illustrating a detailed operation of an automatic reset control routine of FIG. 5;

FIG. 10 is a flowchart illustrating a detailed operation of a color adjustment / color selection key control routine of FIG. 5;

FIG. 11 is a flowchart illustrating a detailed operation of a color adjustment body key control routine of FIG. 5;

FIG. 12 is a flowchart for explaining a detailed operation of a color adjustment light key control routine of FIG. 5;

FIG. 13 is a flowchart for explaining main operations of a color copying machine according to a second embodiment of the present invention.

FIG. 14 is a flowchart illustrating a detailed operation of a color adjustment reset control routine of FIG. 13;

[Explanation of symbols]

 2-7 Color Adjustment / Color Selection Key 2-11 “Light” Key 2-12 “Light” Key 2-C, 2-M, 2-Y Density Display Unit 100 CPU (Central Processing Unit) 101 ROM (Read Only Memory) ) 102 RAM (random access memory)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03G 13/01 G03G 15/01-15/01 117 G03G 21/00 370-502 G03G 21/02-21 / 04 G03G 21/14

Claims (3)

(57) [Claims] 1. A color adjustment mode is selected,
One first key for selecting a color to be adjusted in the color adjustment mode, a second key for adjusting the density of each color, and whether or not the color adjustment mode is set is stored. First storage means for storing the order of the adjustment colors; second storage means for storing the density of each color adjusted by the second key ; display means for displaying the density of each color; When the first key is operated in a state where the color adjustment mode is not set in the first storage means, the color adjustment mode is set, and the first color of the order stored in the first storage means is set. Shift to adjustment mode ,
The density of each color stored in the second storage means is read.
And the read density is used as the initial value for adjustment.
Then, when the first key is operated in a state where a color adjustment mode is set in the first storage means and displayed on the display means , a transition is made to a next color adjustment mode, and each color is adjusted. In the adjustment mode, the density of each color adjusted by the second key is stored in the second storage means, and when the first key is operated in the last color adjustment mode, the color adjustment mode is reset. And a color copier comprising: 2. The color copying apparatus according to claim 1, wherein said color adjustment means sets the density of each color of said second storage means to a reference density when power is turned on, when a mode clear key or an automatic reset is performed. Machine. 3. The color adjusting device according to claim 1, wherein after the color adjustment mode is reset, the density of each color in the second storage device is set to a reference density after a predetermined time has elapsed. 2. The color copying machine according to 2.