DE2116282B2 - WRITING DEVICE FOR AN IMAGE RECEIVER - Google Patents

Description

3 4

values of the original image. Specifically, you want blue and black or cyan, magenta, and yellow the device corresponds to black suitable for a color facsimile system. That of the individual photos, signals picked up by electrical transducers

The invention consists in that at one amplified by the amplifiers 11, 12, 13 and 14 and

Writing device of the type mentioned at the beginning of the figure 5 and then assigned to an encoder 15

Writing tip or a number of with dye.

Different color filled writing tips each. The encoder 15 causes a time coding of each

primary color signal by a movably held ballpoint pen, one of which is from a resolver

which is added by a synchronization signal obtained in the field of the magnet. Of the

The ordered resolver stored by the signals from the image transmitter has a gear-wheel-like disk 16

most spool to reproduce different gray from soft iron, which is directly connected to the cylinder

or shades of the original with a pressure against which is connected and the angular position of the cylinder

the recording surface can be pressed, which indicates the, as well as a sensor 17 for scanning the

Coil current flowing through it is proportional. Washer on. The time encoding methods used by the

Such a device is very simple and has 15 encoders 15 works, as are the types of

the particular advantage that with the pressure known from synchronizing signals. Since the training

of the coil depending on the signals sent by the encoder not in direct

len is exercised on the ballpoint pen or pens depends on the invention, it is no further here

the width or area of the written lines or described. The signal supplied by the encoder 15

Points extremely precisely to the density values of the image 20 is fed to a transmission point 18 and via a

template is customized. Here is also a very transmission medium 19, such as a line or a

High resolution possible because the ball point transmits theoretically wireless system. more details

table (with a pressure of size zero) an infinite transmitter need not be explained here either

Hch small point can write. The area of the be. It goes without saying, for example,

The written point becomes larger, the stronger 25 that the photoelectric converters 7, 8, 9 and 10 so

the ball point are arranged pressed into the recording surface that they the cylinder 1 at its

which scan in a further development of the invention for rotation in the axial direction,

a pad that is compatible with vinyl or color facsimile equipment

Rubber skin is covered, so denoted by the reference numerals 20 to 36 correspondingly. He developed

is stic. 30 holds a recording device with a ball

A preferred embodiment of the inventor pen system. First of all, the reception signal is shown in the drawing. It shows at 20 the time-coded primary color signals

Fig. 1 is a schematic representation of a transmitting a decoder 21 supplied, which the primary

and receiving system, for which the writing device color signals and the synchronizing signal in their original

tion is used, 35 regained its original form. Details of the

FIGS. 2 (A) and (B) do not need a sectional view or a decoder at this point either

perspective view of part of the writing to be explained in more detail, since such decoders are

device, are known.

Fig. 3 is a perspective view showing the synchronization supplied by the decoder 21

a preferred arrangement of several ballpoint pens 40 signal is used as a reference signal of a synchronizing

the writing device shows, control device 34 supplied, which the reversal

F i g. 4 shows another embodiment of a part of the receiver drum with the rotation of the

the writing device, transmitter cylinder 1 synchronized. A feeler 33 feels

F i g. 5 shows a perspective illustration of a single-angle position of a gear-wheel-like disk 32

direction for removing excess paint of 45 from soft iron, which is directly linked to the

connected to a ballpoint pen of the writing device, drum 30 and disk 16

F i g. 6 shows a section through a ballpoint pen, equates and carries out corresponding signals of the synchro-

F i g. 7 (A), (B), (C) and (D) enlarged dividing control device 34. The output signals

Sectional views showing the different operating modes of the sensor 33 with that of the decoder 21

conditions of a synchronization signal supplied to a recording paper in the synchronization

show and control device 34 compared, which an output

F i g. 8 shows an illustration to explain the output signal that is required for synchronism in FIG

Results of the different operating conditions with revolutions of the drum 30 of the receiver

of the ballpoint pen. the cylinder 1 of the transmitter by a control

The 55 illustrating the principle of the invention provides a drive motor 35 for the cylinder. The representation of the F i g. 1 shows under the reference number rotation of the motor 35 is transmitted to the drum 30 with the aid of an anfern 1 to 18 the transmitter of the color facsimile device drive shaft 36,
tion. The original 2 is attached to the surface of a cylinder 1. The cylinder is set with the aid of recovered four primary color signals, which a motor 3 and a drive shaft 4 in rotation 60 with the aid of the amplifiers 22, 23, 24 and 25 amplified. The original will be illuminated with the aid of lamps 5 and the recording devices 26, 27, and 6, and will be fed from the illuminated parts 28 and 29 which are arranged in the receiver at electrical signals corresponding to the reflector of the drum. With the help of this position strength of each of the primary colors of the original with gnale, the ballpoint pen system of the recording aid of photoelectric converters 7, 8, 9 and 10 is controlled. The writers of the list. The spectral sensitivities of the photo-drawing device move with the reversing electrical converter due to the color mixing of the drum 30 in the axial direction,
curves that correspond to the primary colors red, green, the colors of the ballpoint pens

spectral properties of the photoelectric converter for the primary colors, and the scribe lie on a recording paper 31 wrapped around the surface of the drum 30 under pressure where the pressure is determined by the primary color signals. In this way a is sent Original with a concentration of the dye of each primary color on the recording paper 31 recorded, which corresponds to the concentration of the corresponding primary color of the original, so that the color reproduction of an image or writing is done in this way.

The block diagram of FIG. 1 illustrates the principle of the invention. With regard to the equipment Realization need not be particularly emphasized that a start signal and a stop signal for the image or writing is output from the sender side and that the photoelectric Converters 7, 8, 9 and 10 and the receiving converters 26, 27, 28 and 29 in their start-up, stopping and resetting can be controlled according to these signals. Furthermore, when used exclusively the scribe and photoelectric converter for the color black a black and white facsimile obtain.

It will now be discussed on the ballpoint pen system of the recording device, which is on hand the F i g. 2 (A) and 2 (B) will be explained. According to FIG. 2 resembles the recorder mounting of the drive device a loudspeaker cone with a voice coil. A magnet yoke 37 forms together with a permanent magnet 38 a magnetic circuit, which a perpendicular to the coil 40 extending magnetic field generated. The coil is attached to a diaphragm 39 which is axially compliant and corresponding the current flowing through the coil 40 is deflected in this direction. The coil current is the signal stream supplied by one of the amplifiers 22, or 23, 24, 25. The membrane 39 is on the outside held by means of a vibrating plate ring 41, while a holder 42 in the middle of the membrane a Teflon sleeve 43 for holding the ballpoint pen 44 is provided. Since the Teflon sleeve 43 can move the ballpoint pen 44 in the axial direction, the flowing through the coil 40 determines Current this movement and thus the pressure of the ballpoint pen against the paper 31, which is around the Receiver drum 30 is wound around. The space between the ballpoint pen and the surface of the paper becomes constant when no signal is present by a spacer denoted by 45 in FIG held. If, on the other hand, a current flows through the coil, the pen moves towards the paper and its ball is pressed against the paper. The extent of this pressure determines the concentration the color applied to the paper surface and the area of this color application, so that the color intensity is reproduced at the relevant point in the template. The signal stream and the the Coil 40 flowing through direct current can be controlled on the transmitter or receiver side so that the Ballpoint pen is lifted from the surface of the paper if the original is white and that the thickest The proof is made when the color concentration of the original is greatest.

The in F i g. 2 illustrates the embodiment shown only a basic possibility of the pen holder, which is modified in many ways can be. For example, a part of the pen that retains the dye can be included be connected to a dye reservoir and to maintain the distance between the pen tip and paper surface, an arm can protrude from the yoke, and the entire part of the recording device is pressed against the surface of the paper. Furthermore, instead of the diaphragm drive in the on the basis of FIG. 2 (A) explained form ίο with an outside coil as with a dynamic one Loudspeaker a drive mechanism with an inner coil or a drive mechanism accordingly a magnetic loudspeaker can be used, for example, as shown in FIG. 4 is explained. Fig. 3 also shows a possibility of the writer arrangement represent.

Preferably the surface of the receiver drum is covered with a vinyl or rubber skin covered, so that the recording is better made possible with different pressure of the scribers. Can be used to remove excess dye that has adhered to the tips of the ballpoint pen a dye removal device, for example in the form of a felt or a brush 55, is provided be that at startup or at a predetermined angular position of the rotating drum in or perpendicular the direction of rotation of the drum is effective, as shown in FIG. 5 is shown.

The structure of a ballpoint pen is shown in FIG. 6 shown. The image recording device or a font with the illustrated ballpoint pen system is extremely cheap compared to usual facilities, it is easy to operate and enables a color rendering in a simple manner. Tests have shown that reproductions of excellent quality are obtained. Fig. 6 shows the ball 49 at the tip of the pen, a bearing 46 for the ball, with the bearing the dye reservoir 47, which contains the dye 8, is connected. Instead of a ballpoint pen the The type shown, the tip can also be designed with a roller rotatable only in one direction. The different penetration depths of the ballpoint pen tip or the corresponding contact surface on the recording sheet (paper) is shown in FIG. 7 and 8 illustrated. The recording sheet 96 lies here on the already mentioned vinyl or rubber skin 97 which in turn is wrapped around the surface of the drum 98. F i g. 7 (A) shows the case that the spherical tip 95 of the ballpoint pen 94 the recording sheet without pressure at most just touched. According to FIG. 7 (B) the tip is pressed lightly, which also causes the rubber skin 97 is pressed in slightly concave. Now a line can be drawn with the ballpoint pen. at the one shown in FIG. 7 (C), the pressure is increased and the rubber skin is pressed in more strongly. The result is a larger contact area with the paper and a widening of the recording line, so that an area of higher density of the original can be played back. According to FIG. 7 (D) the pressure is increased to a maximum value been. The tip 95 is therefore now at its lowest point, and the maximum contact area reached corresponds to the highest density parts of the original. As already explained above the change in the width of the recorded line depends on the strength of the signals that

the one pressing down on the ballpoint pen
leads to be. ,

The relationship between the indentation depth and the
The width of the recorded line 99 is in FIG. 8 shown. The different indentation depths α, b, c, d
and / correspond to the different widths d, V,

Pull coil- c ', d' or / "'. When reproducing the lighter shades of the original, a line of smaller width (e.g. V) is drawn, and lines of greater width are drawn for darker areas. It is therefore possible to practically the entire 5 To reproduce the density range of the original in a continuously graded manner.

For this purpose 2 sheets of drawings

Claims (5)

1 2 The previously known and customary apparatus patent claims for transmitting images that are recorded in the image receiver on the basis of signals from the image transmitter are relatively complex. This applies above all 1. Writing device for an image receiver, 5 learning for the writing device for which, for example, an elekdie from in an image transmitter by photoelectrolytic, electrostatic, light-sensitive see scanning of an original generated signals or other special recording paper is required is controlled, with at least one writing is. In addition, the well-known device tips, Using a magnet does not always conflict with all quality requirements gen a recording surface is pressed and io of the written image. Particular difficulties contains a dye, which was previously identified during transmission and recording records that the writing tip or a range of color images. As far as anything, this was it number of with dye of different color with the known devices only with considerably filled Writing tips each possible with a little effort. Removable ballpoint pen (44) formed 15 From the German Offenlegungsschrift 1487 814 that of one in the field of the magnet (38) is e.g. a picture tele- arranged, known from the signals of the image sender graphics system in which in the image receiver fed coil (40) for reproduction under a writing tip by means of an electromagnet different gray and color tones of the original with the force of a spring against a drum a pressure is pressed against the recording surface on which the recording paper is located can be pressed, which is the one flowing through the coil. The writing tip can be electric Current is proportional. insulated metal pin, which is placed directly on the 2. Writing device according to claim 1, which writes electrolytic recording paper characterized in that the recording or application of electrostatic charge apf surface against which the ballpoint pen or pens 25 a non-conductive sheet can be used, which (44) are pressed, then on a pad by a known xerographic process (30) that is developed with a vinyl or rubber band. In the known device can skin is covered, in which the ball or a metal pen for recording on druckempschreiber depending on the signals of the sensitive paper by actuating the electric image transmitter be pressed in to different depths or, instead, some method of abdening. storage of liquid dye can be used. All 3. Writing device according to claim 1 or 2, these alternatives known from image telegraphy characterized in that the coil (40) are expensive in their practical embodiment Ballpoint pen (44) movable by a dig and let in terms of the quality of the screamed diaphragm (39) is held and in the field of a 35 benen image to be desired, among other things Permanent magnet (38) is deflected. depends on the accuracy and precision 4. Writing device according to one of the preceding (resolution) the density values of the scanned pending claims, characterized in that the original is reproduced. the coils (40) of the various ballpoint pen color facsimile systems are from the USA. (44) from time-coded in the video transmitter and written in 4 ° 1 709 926 and 2 951 894 known. In one Image receiver fed decoded signals case is blue, yellow or red by compressed air which are the primary colors (e.g. red, ink sprayed from a nozzle onto a paper, what Green, blue, black) correspond to the original, has the main disadvantage that none of them are sufficiently feeble image points assigned to one of the ballpoint pens can be generated and external is. 45 which, if necessary, the removal of excess 5. Writing device after one of the advance ink is difficult. In addition, often the inquiring Claims, characterized in that such a compressed air source is not accepted a device (55) for removing excess. In the other case, there are four ink sticks for the liquid dye provided by the ball colors yellow, red, blue and black, the Scribers (44) is provided. 50 each have a piston inside, the one in the open The end of the ink stick is seated and only leaves a small gap open. The size of this gap and thus the amount of the outflowing ink are controllable by a piezoelectric crystal 55 to which the piston is attached. By controlling the However, the amount of ink can be graded density values reproduce a template only to a limited extent, and a certain minimum area of the writing point, which is given by the contact surface of the pen cannot be undercut. Further the control of the amount of ink follows the density change The invention relates to a writing device for changes in the original or the corresponding KoI-an image receiver, the benbewegung in an image transmitter with a certain delay,
by photoelectric scanning of an original object of the invention is to provide a writing device generated signals is controlled, with at least 65 device to indicate that with little effort and enteiner Writing tip that writes a picture using a speaking low cost Magnets pressed against a recording surface quality better than with the known devices and contains a dye. is, that is more precisely the different density