JPS62142646A - Tone adjustor in color recorder - Google Patents

Abstract

PURPOSE:To enable a simple and easy operation, by providing a spherical adjusting member capable of rotating by moving a lug and a travel amount measuring means driven by the spherical adjusting member being in contact therewith. CONSTITUTION:An operation part is provided with a spherical tone adjusting member 33 having an operation knob 30 fixed thereon and a color ring 31 working as a tone display part. On a plane covering the center of the adjusting member 33, three cylindrical travel amount measuring means 34 are disposed at the positions dividing the outer circumference of the adjusting member 33 into three parts. The travel amount measuring means 34 are divided by resolved colors, for example, into a travel amount measuring member for C as 34C, a travel amount measuring member for M as 34M, and a travel amount measuring member for Y as 34Y. For instance, shifting of the knob 30 toward R results in the rotation of the measuring member 34C the larger amount in the reverse direction in comparison with the rotation of the measuring members 34M, 34Y. A tone adjusting driver converts the direction and amount of rotation to a degital signal and sends it to an image processing part. In this manner, the adjusting member 31 and the measuring member 33 are adjusted by moving the knob 30, which easily corrects an information of an original.

Description

[Detailed description of the invention] The present invention separates the original image into colors, converts the read signal into a digital image signal, records a plurality of color images on a photoreceptor using the separated color image signals, and copies the image. The present invention relates to a color recording device that forms a color image by overlapping images of a plurality of colors on paper, and more specifically to a color tone adjustment device for a color copying machine, a color printer, a facsimile, and the like.

Many color recording devices have already been proposed, and some have even been commercialized, which form color-separated images of a document image on a distorted photoreceptor, and transfer the separated images onto copy paper to form a color image. .

In conventional color recording devices, the color MFm K'tlA setting is
Since an adjustment device is provided for each of the three separated colors used for printing, and each adjustment device is adjusted, the adjustment operation is complicated.

Some devices reserve several types of setting modes as color tones in advance, but in this case, the types of color tones are limited, and moreover, it is not possible to obtain color tones other than the setting mode, and if you try to obtain them, the tone %J5 The work has become complicated.

Furthermore, the predetermined color 11 is adjusted while adjusting the balance of the tones of the three colors.
It is necessary to obtain i1, and there is a problem in that beginners cannot discern what color tone will be obtained at the adjustment stage.

The object of the present invention is to eliminate the drawbacks of color tone adjustment of conventional color recording devices and to provide a color tone adjustment device that is easy to understand on a WI vehicle.

In order to achieve the above object, the present invention includes a spherical adjustment member that can be rotated by a knob, and a spherical adjustment member that passes through the center of the adjustment member.
and displacement measuring means disposed in one third of the circumference of the adjusting member in two planes and driven in contact with the spherical adjusting member, each displacement measuring means receiving an individual tone correction signal for each separated color. It is characterized by outputting the image to an image processing section and adjusting the color tone.

The structure and operation of the present invention will be explained in detail based on the embodiment shown in the drawings.

In FIG. 1, a color copying machine is shown as an example of an image recording device. The copy machine has a scanner part 1 for reading originals.
, an image processing section 2 that electrically processes the image signal output as a digital signal from the scanner section 1, and a printer section that forms an image on copy paper based on the image recording details of each color from the image processing section 2. 3.

The scanner part 1 has a lamp 5, for example a light emitting lamp, for scanning and illuminating the document 4 on the document table. The reflected light from the document when illuminated by the light emitting lamp 5 is reflected by the mirror 6.7.8 and enters the imaging lens 9. The image light is imaged onto the dichroic prism 10 by the imaging lens 9, and is, for example, red (R), green (G), blue (B).
The light is separated into three types of wavelengths, and a receiver 11 is installed for each wavelength, such as a CCDIIR for red and a CGD for green.
It is input to IIG and CCDIIB for blue. Each CCD
IIR1IIG, 11B converts the incident light into a digital signal and outputs it, and the output is subjected to necessary processing in the image processing section 2 to record color information of each color, such as black (
(hereinafter abbreviated as B), yellow (abbreviated as Y), magenta (M
(abbreviated as C) and cyan (abbreviated as C).

Although FIG. 1 shows an example of forming four colors, BK, Y, M, and C, it is also possible to form a color image using only three colors, Y, M, and C.

The image recording signal from the image processing section 2 is sent to the laser light emitting device 12 of the printer section 3, and the laser light emitted from the laser light emitting device 12 in response to the image recording signal forms an image on the photoreceptor 13. .

Around the photoconductor 13, for example, a photoconductor drum, there are a charger 14, an image forming exposure position using laser light, and a developing section. v1
5, a transfer device 16, a charger 17 for lowering the surface potential of the photoreceptor, and a cleaning device 18 are arranged in this order.

The surface of the photoreceptor 13 is uniformly charged by a charger 14, and an electrostatic latent image of a predetermined separated color is formed by exposure to laser light, and the image is developed by a developer of a predetermined color in a developing device. The non-image is transferred to the transfer paper under the action of the transfer charger 19, the residual toner on the photoreceptor 13 is cleaned and removed, and the process from charging is repeated again.

The transfer paper 20 is fed by a paper feed roller 22 from a paper feed unit 21, for example, a paper feed cassette, and is fed by a pair of registration rollers 23 at a predetermined timing with the leading edge aligned, and transferred to the transfer device 1.
The leading end is held by the clamper 25 of the transfer drum 24 of No. 6 and sent to the transfer position by the transfer charger 19.

When a color image is separated into three colors: magenta (hereinafter abbreviated as M), cyan (hereinafter abbreviated as C), and yellow (hereinafter abbreviated as Y), and an image is formed by overlapping transfer of the separated images of the three colors, development is required. The device 15 includes an M developing section 15M that accommodates and develops an M developer, and a C developing section 1 that accommodates and develops a C developer.
5C and a Y developing section 15Y that accommodates and develops a Y developer, and furthermore, a BK developing section 158K that accommodates and develops a BK developer when a black (hereinafter abbreviated as BK) image is formed separately.

When M, C, and Y separated color images are sequentially formed by signals from the image processing unit 2, the photoreceptor rotates M, C, and C images each time it rotates.
, Y are formed, the tip of which is gripped by the transfer drum 16, and sequentially transferred to a rotating transfer paper-H by a transfer charger 19 while being electrostatically stuck.

When the transfer drum rotates three times, the three separated color images are superimposed and transferred, and when the BK image is further superimposed, the transfer paper is rotated four times.

The rotation speed of the transfer drum 24 is selected depending on the desired color of the image at that time.

After the transfer, the transfer paper is neutralized by the charger 26, separated from the transfer drum 24 with the assistance of the separation claw 27, fixed by the fixing device 28, and discharged by the discharge roller.

As shown in FIGS. 2 to 4, the operating section of the color recording device has a spherical color tFf fixed with an operating knob 30 serving as a pointer.
A color ring 31 is provided as an A fil adjustment member 33 and a color tone display section. The color wheel in Figure 2 is divided into six parts: C, BSM, R.
, YSG are displayed. This displays the separated colors R, B, and G and their complementary colors C1Y and M. If the display portion of the color wheel 31 is colored with actual colors, it will be easier for even beginners to understand. The color wheel is not limited to six colors; adding intermediate colors will make it easier to distinguish between hues. The spherical tone adjusting member 33 is supported on a spherical surface and is rotatably supported in any direction.

fl! in one plane passing through the center of the adjustment member 33! i
Three cylindrical movement amount measuring means 34 are arranged at three divided positions on the outer periphery of the adjustment member 33 and are in contact with the adjustment member 33.

Each movement amount measuring member 34 is, for example, a C movement i! They are distinguished for each separated color, such as an IJ amount measuring member 34C, an M movement amount measuring member 34M, and a Y movement amount measuring member 34Y.

A pulse generator 35C is attached to the movement amount measuring member 34C for C.
However, the pulse generator 3 is attached to the movement amount measuring member 34M for M.
A pulse generator 35Y is attached to the Y movement amount measurement member 34Y, and when the adjustment member 33 rotates, the rotation direction and rotation amount of each color movement amount measurement member 34 that is rotated in contact is output as a pulse signal. Output.

To specify red R in Figure 2, move knob 30 to color wheel 3.
When tilted toward display R in Figure 1, the knob 30 is tilted in the direction shown by the arrow in Figure 3, and the color tone adjustment member 33 is rotated around its center point in the direction shown by the arrow in Figure 4, for example. . As the color tone adjustment member 33 rotates, each cylindrical movement measuring member 34 is rotated by friction. The pulse generator 35 outputs a signal indicating the amount and direction of rotation of each movement tJ+fjt measuring member 34C134Y, 34M.

When the knob 30 is moved toward R, for example, the amount of rotation of the movement amount measuring member 34C for C is the largest, the amount of rotation of the movement amount measuring members 34M and 34Y for M and M is the smallest, and the amount of rotation of the movement amount measuring member for C is the largest. The rotation direction of 34G is determined by another movement measuring member 3.
4M and 34Y are in opposite directions as indicated by the arrows.

The rotation direction and rotation amount of each of the movement amount measuring members 34C, 34M, and 34Y are converted into digital signals by a color tone adjustment driver 51 as shown in FIG. 5, and sent to the image processing section 2.

In the image processing unit 52 of the image processing section 2, the signals obtained by converting the output signals of the CCDI IR, 11G, and 11B of the scanner part 1 into 8-bit/D converters are converted into color gradation data in the shading correction circuit 53. Corrections are made for optical illuminance unevenness, sensitivity variations in internal unit elements of the CCD, etc., and read color gradation data is obtained. Next, the γ correction circuit 54 changes the gradation according to the characteristics of the photoreceptor, converting it into 6-bit data, and the complementary color generation black separation circuit 55 converts R into C, G into M, and B into Y. The tone data is converted, and if the C, M, and Y tone data all have high density, it becomes BK.

Next, each Y, M, and C gradation data is averaged in an average data compression circuit 56 into 4×4 image data, which has 6-bit gradation data for one image. The masking processing circuit 57 corrects the Y, M, and C signals in accordance with the characteristics of the spectral reflection wavelength of the toner for forming a recorded image. At the same time, the Y and MSC signals are corrected in accordance with the signal from the color tone adjustment driver 51. This signal is further subjected to color balance correction in the overlapping of each color toner in a UCR processing circuit 58, and a gradation processing circuit 59 generates a pattern corresponding to the density using Y and MSC gradation data.

For BK, a pattern is generated by combining the signal from the black separation circuit 55 and the signal from the UCR processing circuit 58.

The output of the gradation processing circuit 59 is sent to the laser beam emitting device 12 of the printer section 3, and is sequentially sent to the laser beam emitting device 12 of the printer section 3 as described above (photoreceptor 1
A latent image is formed on 3.

Knob 30 and color tone adjustment member 31 that constitute the color m adjustment device
By adjusting the movement amount measuring member 33 by moving the knob 30, it is now possible to easily correct the information on the document.

The color gm adjustment is not limited to the example shown in the figure that utilizes movement amount counting by the pulse generator 35 as device information, but there is also a method of reading it by changing the resistance value of a variable resistor.

In Fig. 5, the masking is corrected by inputting the color m adjustment to the masking circuit, but there are also methods of inputting it to the γ correction circuit and changing the γ correction for each color, or correcting the bias value of the developing device. It is possible.

Fruit Set According to the present invention, it has become possible to adjust the color tone with a simple operation using a single adjustment device.

According to the present invention, color tone can be easily controlled by using a color wheel.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of a color copying machine according to the present invention, FIG. 2 is a plan view showing the relationship between the knob and color wheel of the tone adjusting device according to the present invention, and FIG. 3 is a diagram showing the color wheel of the tone adjusting device. 4 is a plan view of the state with 1. removed, and the front view of FIG. FIG. 5 is a control block diagram of the image processing section. 1... Scanner part (image reading means) 2... Image processing section (image processing means) 3... Printer section (color information recording means) 30... Knob 31... Color wheel 33...・Adjustment member 34...Movement amount measuring means 35・
・・Pulse generator

Claims (1)

[Claims] An image reading means for color-separating and reading a document image, an image processing means for converting a read signal by the image reading means into an image recording signal, and a color information recording means for recording a plurality of color images based on the signals from the image processing means. a spherical adjusting member rotatable by a knob; and a spherical adjusting member arranged at three equal positions around the adjusting member in one plane passing through the center of the adjusting member and driven in contact with the spherical adjusting member. The present invention relates to a color tone adjustment device for a color recording apparatus, characterized in that each movement amount measuring means outputs an individual color tone correction signal of each separated color to an image processing section to adjust the color tone. It is something.