DE2251797C2 - Device for making information temporarily visible - Google Patents

Description

The inventive device for temporary

In contrast to what was initially described as bc-45 knows mentioned recording devices -

The invention relates to a device for making information, lytic and regenerating solutions and also no solid, liquid or electrolytic developer containing a regenerable electrolyte for the developing recording medium on which the information is developed, visible a charge image, works practically with the help of selectively controllable writing electronics 50 maintenance-free and is thus considerably simplified.
«Depending on the polarity and a counter electrode To erase the recorded on the drum

The counter electrode and the this erasable erasable electrode connected by a short circuit through an adjacent erase electrode is. be. But it is also possible to choose between the opposite

Such a device is a voltage on-Auslegeschrift through the German electrode and the erasing electrode I 108 243 known, after the as Auf Auflag.

The drawing carrier is an absorbent, endless belt. Another advantage is that

is nutet, moderate stored in the liquid chemicals! are 3Ig by different polarity of the electrodes, resulting in passage of current electrolytically decomposes two-color recording, set and characterized readable, grid-like font and ⁶ <> A preferred embodiment of the invention generate image characters. The moistened strip consists in the fact that the most important component of a chemical compound of halogens in a raster printing mechanism is passed through between a role that acts as an anode and the electrolyte. Shortly after NEN or chalcogens and elements of the 1st and / or the writing generation, the tape is in a deletion or 2nd subgroup of the periodic table represents a facility by an acid chemically regenerated 65 and a specific resistance in the range of fiert. Which is partly very aggressive electrolyte and about 10 * to 10 ⁸ ohm cm.
Regenerating solutions make dealing with the An exemplary embodiment of the invention is

liquid-soaked tapes very problematic, explained in more detail standing. In the associated drawing

tion, a temporary vision recording drum is not essential to the invention and Presentation of information in graphical form depends on the electrolyte used shown, it is crucial that the electrodes 5 have a certain

A shaft I carries a drum 2 designed as a polarity which corresponds to the polarity of the drum-type recording medium. The drum 2 is opposite with 5 meloberfläcbe 3. Corresponding

the shaft 1 rotates and has a metallic, as the applied current direction changes color to the elec-

Counter electrode acting on cylinder. In storage trolyte 4 at the end points of the current paths opposite

In addition, the shaft 1 and the drum 2 are out over the electrodes S by an enrichment of

Made of metal. The surface 3 of the drum 2 metal or hemogenous ions. By simultaneous

is with a chemical prepared record- to rotating the drum 2 is the information line

covering medium, which is a solid, essentially for line on the surface of the electrolyte 4 mo-

anhydrous, self-coloring when a current flows through it, has a saik-like composition. With the described

Electrolyte 4 is. Device result from different The recording of information, e.g. B. Buchdene polarity of the electrodes 5 two-color recording

letters, numbers, characters or symbols are used.

by the action of an electric current in the As electrolytes, those have proven themselves,

current-sensitive electrolytes 4. The current will have a specific resistance at working temperature

to create markings with the help of stand in the range of about 10 ³ to 10 ⁶ ohm cm

Localized writing electrodes 5, which point to the electrolyte. Ion migration can already be achieved with a

th 4 of the clockwise driven drum 2 20 applied voltage of 2 to (Ί volts can be

conductively and in the longitudinal direction of the drum 2 the.

are arranged stationary next to each other. The electro- For erasing the 5 applied to the drum 2, which is arranged on the front information directed to the viewer, on the back of the drum 2 on the side of the drum covered with the electrolyte, an erasing electrode designed as a roller 8 may be prepared by a known georJnet 25, which is rotatable with a shaft 9 and mitelektronische control unit (character generator) 6 se- means of its metallic surface 10 is driven at the electron lekliv and effective as cathodes (negative) trolyten 4 is applied conductive. Preferably are to be made sam. The surface 3 of the geneleklrode drum 2, made of metal as the shaft 9 and the roller 8, is connected to a sliding contact 11 on the shaft 9. the sliding contact 7 resting on the shaft 1 is switched on as anode 30 via a line 12 shown in dash-dotted lines with (positive) in the circuit. the sliding contact 7 is connected.

In electrolytic recording, it is thus the counter electrodes (drum) 2 and

/. between a cathode and an anode a solid the erasing electrode (roller) 8 through a short

Electrolyte 4 arranged, which is connected to a uniform circuit. As most of the connections

Speed under the electrodes 5 moved. The 35 from halogens and elements of the I. and or 2. Ne-

Controlled current flow from the individual electrodes 5 ben group of the periodic table's properties

have through the solid electrolyte 4 to the metallic of a secondary galvanic element.

In this case, surface 3 of drum 2 dissolves the information displayed in the electrolyte

ten 4 from ion migration. through which the passage of a visual area through the short

Surface of the preferably light-colored electrolyte circuit between the l.öscheleklrode (roller) 8 and

th 4 are deleted at the end points of the current paths as a result of the counter electrode (drum) 2,

an ion enrichment point-like discolored. The recording of information on the front

Some information is thus rasterized on the side of the drum 2 and the deletion of the earlier

put together and made visible. Records on the back of the drum 2

The electrolyte 4 is preferably taken from the 45 at the same time. The propulsion means for the

(iruppc chosen, to which the halogens or chalco drum 2 and the roller 8 are generally known

genes of the elements of the L and / or 2nd subgroup and therefore not shown.

of the periodic table. The term Ha-Fs also allows ion enrichment in The logical ones are the fluorides, chlorides, bromides and the regenerative electrolyte 4 compared to the Iodides and, under the term chalcogens, in particular electrodes 5 instead of a short circuit through a who understand the sulfides. To the I. and 2. Ne- special tension elements 13 reversed to iii; ibengruppe of the periodic table include the clicks that are sent to the Yiegenclek elements via a switch 14 Copper, zinc and silver. trode2 and the erasing electrode 8 can be applied. Ir-

, The electrolyte 4, for example, follows the recording by the electrodes DAT zinc chloride to migrate at each current pulse, the 55 5 connected as a cathode, then the 1 <> zinc ions r \\ is the negative electrodes 5 and erzen- see the 1 " ischelektrode 8 to the positive pole and gen on the surface of the electrolyte 4 a sieht- the counter electrode 2 to the negative pole of the free-machining discoloration. When using silver iodide voltage source set. 13 However, if the electrode "5 Hegen the situation different because in this case connected as anode, then have the Gegcnclekden negative electrode S in place of the to be expected 60 i _ro de 2 and u \ r. l.öscheleklrode f5 also to delete the corresponding amount of iodine as the silver an iodine information of an opposite polarity ions enriched and becomes visible.

the surface3 of the drum (counterelectr The device described for clektrolytic

trode) 2 as cathode and the electrodes S as anode see recording and erasing of information

act so that then the silver ions to the positive 65 is suitable for all devices in which do recording

Electrodes walls / 1 ¹ and visible clusters are only temporarily displayed, such as

brazen. z. B. in electronic calculating machines with visual

The choice of polarity is for a monochrome work. The information is transferred to the device after

entered each other and continuously generated and displayed on the drum. Located in the device a dash-dotted window IS through which the information behind it are visible immediately after the recording, if necessary by means of a built-in magnifying lens. The present device consumes electrical energy only to display new information. The displayed characters then remain visible for several hours without energy supply, provided that they are not erased from the roller 8 by rotating the drum 2 further. The device also has have the advantage that it works almost noiselessly and maintenance-free. It is also the case with the present Device possible, halftone images or by reversing the direction of current flow and to produce two-tone images by choosing a suitable electrolyte mass.

1 sheet of drawings

Claims (5)

κ) lead to corrosion of the machine parts and lost patents: g gSÄÄ 1. Apparatus for the passing of visi- tojjÄ ^ rfjgJ ** «^ ^ ^ ie banned making information, with an emenre- 5 Vonggjg ^ jgtjOTun ^ Generable electrolytes containing> Au - ^ »^^ JgRie British patent specification 889 664 drawing carrier on which the information rmt rernemsiu""·" ... _svcrrichtUDE known using selectively controllable writing _{electrodes an electric car t} '^ _c ⁿ " ⁿ f _e ^^ ^ Ommel mU certain polarity and a counter electrode in the "? ^ AufSh generated by an applied erase electrode rich and after transfer to on an electrically ^ tenöen ^lro ^" ^el ^ be applied and after passing through a Sichtbe- a dielectric ^ xo ⁸ S "J * a Aufzeahlöschbar is characterized. drying carrier such as ^^^ Sf ^ Sg ¹ that the recording medium as the drum (2) it is, however, a elektrostati * "a" ^f ze ^ h "with a metallic., we- as a counter electrode voltage , major h kenden cylinder is formed in the first, the covering of the drum, on the upper ₅ i cleaned a rotating brush and an integral, on-plane by a charging device (3) is substantially water electronically aufgela the is thereafter nut to free, self-inking during current passage EIek- on the drum pad H. fe of Schre.btrolyt (4) is applied so that the electrode Schreibelektro- an invisible information aufzubnn- to (5) in the longitudinal direction of the drum (2) next to gen. are finally arranged in a developing device to each other stationary and that the ao sprinkled with powder and formed on the Aufzeicm.ungstragcr Löschelektrout as roller (8). is transmitted. Such a facility is very 2. Device according to claim 1, characterized by elaborate and as a device for passing away, that in order to erase the information do not mix up the visualization of information the counter electrode (2) and the erasable reversible. electrode (8) a voltage is applied. 25 The invention is based on the object 3. Device according to claim 1, thereby device for temporary visualization indicates that the counter electrode (2) and the information e.g. characters or symbols. Erase electrode (8) for erasing the information of the gate mentioned in the preamble of claim 1 are connected to a short circuit. in such a way that their structure and arrangement 4. Device according to one of the preceding 3o voltage is simplified and that chemical fluid claims, u characterized in that th or developer as well as charging and development through different polarity of the electrodes (2, 5) treatment devices are avoided,
result in two-color records. According to the invention, this object is thereby achieved 5. The device according to Anspn \: h 1, solved in that the recording medium is identified as a drum with that the most important component of a mechanical electrolyte (4) acting as a counter electrode is a chemical compound formed from a cylinder on its surface a halogen or chalcogen and elements of the solid, essentially anhydrous, at Stromdurch-1. and or 2nd subgroup of the periodic table gang self-coloring electrolyte is applied. that represents and a specific resistance in the writing electrodes in the longitudinal direction of the drum area of about 10 ^! to 10 ohm cm. 40 are arranged stationary next to each other and that the Erase electrode is designed as a roller.