JPS58101561A - Picture forming device - Google Patents

Abstract

PURPOSE:To simplify the design and maintenance and to attain a device incorporating intelligent functions, by using a CCD capable of obtaining an optical current in response to hue as an image sensor. CONSTITUTION:The device comprises a system which modulates a video signal obtained from a CCD as an image sensor 4 which applies photoelectric-conversion to an original picture 1 and transmitting it to a picture transmission/reception line, and a system which transmits a discriminating output signal for a comparison input signal in a circuit producing an intermediate image of an original picture from the video signal and a demodulating signal of the reception video signal from the said picture transmission line to a buffer memory 11 with a shift register 10 in parallel and introduces the output of the memory 11 to a picture reproducing means. The transmission of original picture or the reproduction of the received picture signal, the reproduction, display, and copy of the original picture and stored picture, is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an image forming apparatus which has image transmission, copying and attenuation display capabilities, and also enables reproduction and duplication of accumulated salary information.

For example, in the Hook Dimillimeter 11, which has been widely used as an image transmission means, the document to be sent is wrapped around a cylindrical body, optically scanned in the direction of rotation, and sub-scanned in the direction of the rotation axis. It requires scanning and partitioning into uniform squares, and complicated timing alignment between the reading on the transmitting side and the distribution on the receiving side, and the similarity of the transmitted image on the receiving side with the diameter of the cylindrical body. If the above scanning-density product, that is, the cooperation coefficient, is not set to the same predetermined value for both transmission and reception, not only will the received image have a different aspect ratio, but the device will become larger. -The current situation is that it takes time to detect and transmit image information. This is largely due to the use of a transmitting drum. There are also plane scanning methods,
Even in this method C, although the document (original image) is fed out flatly, it is
When scanning the m-rule at the intersection with the slit plate, it becomes *** with a rotating part, and it is a point skewer that has many problems such as poor self-standing quality despite its complex structure. It was not much different from the five-rotation scanning method.

On the other hand, the conventional methods used in electrostatic printing devices include those that directly transfer light from the original (original image) onto copy paper, and those that create a latent image on the surface of a photoreceptor and then transfer it to plain paper. There is a transfer method. Even now, the direct method of one person is no longer popular because it requires the use of special copy paper coated with a photosensitive material such as zinc oxide. In addition, in the indirect method of the master, a sensory dot 5 having a photoconductor is used, a corona discharge is applied to this from a high-voltage DC power supply to give an electric charge, and then the original image is emitted onto a photosensitive dot CLL. Form an electrostatic latent image corresponding to the image, make it visible by attaching toner with an opposite polarity charge to the 20**, and transfer and fix this onto the paper of the copy J@. I'm picking it up. Therefore, the existence of the single-turn drum as a sensing body not only increases the size of the entire copying device, but also requires timing settings between the single-turn speed of the photoconductor and the moving speed of the JI[s stage (original image)], and the timing of each operation process. Timing setting cI
[As a result of using a rotating body with a copy value wcm, such as having no choice but to create a complicated mechanism, there are many obstacles in terms of design, manufacturing, and maintenance. In addition, it has a simple function of copying llAl1li images one by one, instead of using a liquid that is expensive, and does not require additional functions such as storing original images and transmitting them to other places. I thought it was possible.

Therefore, the present invention was developed in view of the above-mentioned circumstances, and in order to detect the original image information, the incident light is converted into a video signal C.
It uses a CCD (hereinafter referred to as CCD) as an image sensor to convert and send out as a V-real signal, and integrates various functions such as transmission/reception, copying, display, storage, etc. It is an object of the present invention to provide an image forming apparatus that is versatile and can be used for multiple purposes.

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.

No. 111 is a systematic diagram showing the configuration of the apparatus of the present invention, with the CJI manuscript face down on a transparent document table 11.

With the mounted original image, illuminate the original image from three light sources,
The reflected light is diffracted by Mitsu-3, and the original image information is incident on the image sensor 4c using COD through the lens 1.
Alternatively, this can be carried out by moving any one of the optical systems consisting of the light source 3, the light source 1, and the V lens back and forth, and irradiating the linear C original image through a slit (not shown). 2 indicates a halftone generation circuit formed by the process shown in FIG. Configure the transfer mode of the image sensor 4 based on the signal) - 1 to 4 CV l
Enter at jA~ and V to change the signal to Puffre WCG again.
D generates a pulse signal for taking the V-shift timing of the system #1 and an analog signal with a different signal μ.
Sc supplies a pulse signal to -M conversion-$.

- is Combare! Then, compare the output from the D-mu converter, the V9 output signal from the sensor 4, and the reference signal, and if the reference signal is larger, the child signal (1°gs) is
Also, if it is small, one signal (“・, l1 勺) 4 (V))
It operates to send to Vjis #10.

11 is a buffer, which temporarily stores the manually generated signal until the next signal comes in, and then uses this signal as the basis for the image reproduction drive unit! The snow acts, and the duplication means 1m is operated based on the drive signal from the drive unit 1m.

Reference numeral 14 denotes an auxiliary memory, which can store, for example, a magnetic tape or disc, and which records image signals when necessary, transfers prerecorded signals, and reproduces them with the duplication means 1m. It is for.

In addition, C1i uses 1. , 'O, has the function of modulating the signal, and via this card I, it is transmitted from the transmission twin L of the telephone I!11s etc. by using the transmit/receive switch switch 8 from the transmit terminal T, Alternatively, the ISC is configured to receive a signal sent from the transmission fin L via the contact piece 8.

Next, the operation of the apparatus of the present invention constructed as described above will be explained.

Now, the optical signal scanned in the original -11tlli shape is reflected by the mirror i.
The sensor f4c enters the sensor f4c through the V lens 1 and performs a photoelectric conversion, but the original signal cpIJ from the pulse generator 1 is sent to the comparator 9c.

On the other hand, based on the pass signal C from the pass V signal generation s7, an anag signal from the %D-me converter is simultaneously sent to the comparator section, and in this comparator C, the pass signal C is sent to the comparator section. Compare the signals from both the D-me converter and the reference signal, and if the reference signal is large, the value is 1.Note, and if it is small, 1.

The signals are sent out respectively.

This 0 shift F register 1 is synchronized with the pulse signal C from the pulse generation I11, and the comparator straw f)
F 9A ~ The conversion of the faith into a puff Vμ faith output with a suitable pi count is sent to the buffer 1 meter and the threshold until the first signal comes in, after it is temporarily stocked. ,j
So regeneration drive SL! If this multiple means is a CIlte display, it will be shown on the plow tube, or if it is an image printing device, it will be sent to the copying means isc via Reproduced as desired (as desired) or as a hard copy. Also, simultaneous Cll[I
14 (distribution) which increases the auxiliary method as means for controlling the i-image signal.
After changing the C modem 1, it may be transmitted to another place via the fin L, or after copying the signal sent through the fin L, the copying means 13 may be used to copy the signal. The data can be displayed, reproduced as a hard copy, or stored in the auxiliary memory 14C.

By the way, in the above, in order to generate a half-tone image, is the palace generator used? The process of generating a halftone by the operation of a generating circuit consisting of a D-me converter and a comparator will be explained with reference to FIG. The generation of halftone images is generally known as the dither method, but the same method optically scans the original image and creates an image center using a CCD.
4 detects the original image with a mixture of brightness, darkness, and intermediate images as a mock C.
In the comparator shown in Figure 5, Oka Il @ calculates, for example, the halftone reference value (8h) by t against the numerical value obtained by randomly arranging the signals generated for each main scan of the original image.
, 7 de1vli1%C) of the dithering values for VpeN judgment distributed above and below 20 bases is a comparison graph of the brightness level judgment of the original image on the above-mentioned scanning/scanning bell. , 0 is the playback tone pattern of the bright and dark midpoint. In such a relationship C, the discrimination between the extremes of bright and dark is determined by
From I3CIt'e, or 1h's theory! FJIC
However, for halftones, the mixed density (abundance ratio) of black dots on a white background, and the contrast between brightness and darkness and their intermediate tones, can be arbitrarily determined by changing this standard value (8h). .

In addition, the number of scanning lines of an image sensor using COD will be estimated by taking as an example the printing on paper by thermal transfer using the Nama ρ head type as the duplication means 1s of the apparatus of the present invention.
Approximately z7MH as 50 sheets per minute, 11 dots per unit length (mm) from the original image of 4 size (zoo x slam)
z, and CCDs currently on the market can be put to practical use. Further, any method such as a discharge method, an electric heating method, an electrostatic method, a mechanical impact method, or an input method can be used for reproducing the original image.

According to the present invention as described above, by using a CDD that performs photoelectric tILc conversion according to the color tone section instead of the rotating drum section as an image sensor, the data such as the original IIO video signal can be
It is now possible to create a device that integrates end functions such as easy transmission, storage, playback, and duplication, and the COD has an extremely small amount of weight compared to a rotating drum. Therefore, the entire device is compact and convenient, and it has a rotating mechanism like a rotary dofu and a DC high-voltage electric generator.
1 is not required, and the design and maintenance of the device can be significantly simplified.

[Brief explanation of drawings]

No. 1111 is a systematic circuit showing the configuration of the apparatus of the present invention, and No. 5 lil is a piecewise explanatory diagram for *ii*c including a halftone obtained by the halftone image generation circuit in the 11iJC. 1ml [j image 3 katsu light source 38 mirrors 41 image sensor -1 pass generator -80-Af conversion I6
- Comparator 10 Wealth V Futre ν Star 11 T Buff 1 Memo Source: Kyoto Sewomitsu Co., Ltd. Representative Kazuo Ina Mori

Claims (1)

[Claims] A charge-coupled device as an image sensor that photoelectrically converts the original image (a system that modulates the video signal obtained from the CCD 1 and sends it to the image transmitting/receiving twin, and a halftone image of the original image from the video signal) The determination output signal of the comparison input signal in the circuit that generates the signal and the decoded signal of the received video signal from the image transmission line are processed by Vftvsl star (4h-) and buffer 1
It consists of a system that outputs the data in parallel to the memory and leads the output of the buffer 1 to the image reproduction circuit, which transmits the m1ii image or reproduces the received image signal and C original jfI! and play back the stored images, and display the results.
A one-image power device that makes it fungus.