DE426779C - Writing method for image transmission equipment - Google Patents

Description

Bur.

1925

ISSUED ON
MARCH 18, 192S

REICH PATENT OFFICE

PATENT LETTERING

CLASS 21 ai GROUP 32

.. (D 47453

Dr. Max Dieckmann in Graefelfing b. Munich.

Writing method for image transmission device.

Patented in the German Empire on March 3, 1925.

If it is, via line or wireless copier graphs with a writing device in the receiver in general, electrochemical processes were used; have this dea disadvantage that the paper, which is mostly prepared with toxic substances, during the Transmission must be kept moist. Writing with pencil, colored pencil, etc. succeeds

ίο not satisfactory, as the necessary specific prints are larger than the very light ones and, because of the high transmission speed, they are as low-mass as possible can deliver electromagnetically moved writing systems. In addition, there is Use · such pens the disadvantage that the pen by giving up his Material is shortened to the writing pad and therefore continuously a feed must receive. So far there are no constructions for writing with a fountain pen that enable a sufficiently reliable writing. Also recently Described process, through the heat of electricity from sparks easily meltable dye transferring it to the writing surface does not completely satisfy him as much as with ' wireless operation of the arrangements complicated and the arrangements expensive Measures are required to prevent the sparks from causing the susceptible to swerving Affect parts of the receiving arrangement.

The new method described below offers an advantage over those described above Process takes considerable advantages as opposed to the electrochemical process the writing surface not to be kept moist. In contrast to the procedure with Electromagnetically moved pens, the new process requires only minimal specific Prints to produce the strongest color effects on the writing surface and is free from the disadvantage of writing by means of sparks and enamel color, that the sparks influence the vibration-sensitive receiving arrangement entry.

The principle of the new process can be seen from the schematic representation (Fig. 1)

see, α means the receiving roller of the copier graph rotating synchronously with the transmission roller, b a sheet of writing paper placed around the roller on which the image is to be created, c is a thin film laid over it, which on its lower side facing the writing surface b evenly with a easily meltable dye is covered. The one at the turn of the

ίο receiving roller by spindle guide slowly moved along the roller carriage d carries the electromagnetically moved writing arrangement-. An armature with as low a mass as possible and rotatable about the axis e can be attracted by an electromagnet g through which the line current flows, so that the pen h touches the writing pad c and b with slight pressure. When the magnet is de-energized, the spring / pen lifts off the surface. There is a heating coil k around the pen h. laid out of resistance material, which receives over the easily movable 'supply lines / from a battery m current, which can be adjusted by a controllable resistor ti so that. the temperature required to melt the dye is achieved.

If, while the roller a is rotating and the carriage d is shifted laterally, current surges from the transmitter arrive in the magnet coil g , the pen is lowered onto the foil c at the same rate as it is. Since it has been brought to a sufficient temperature by the electrical heating, the ink on the underside of the film melts and is transferred to the surface of the writing paper b when the pressure is lightly touched.

According to the method of operation of the copier graph, this is created on this writing surface remotely transmitted image.

Another form of the stylus is shown in the schematic Fig. 2. Here, opposite the writing pad, the tip of the stylus k is located, forming a loop made of resistance material or soft again via the easily movable leads / from a battery m via the resistor, / 2 is supplied with electricity and thereby heated.

Claims (3)

PATENT CLAIMS:. « 1. Writing method for over-line or wireless image transmission device according to the system of copying telegraph, in which a pen is lowered electromagnetically in the rhythm of the incoming current surges on the writing pad and removed from it, characterized in that the pen is electrically heated and the one on the The intermediate film covering the writing surface transfers evenly applied, easily meltable dye to the writing surface when it goes down. 2. Writing method according to claim. 1, characterized in that one of one Metallic pen formed by a current loop directly from the flowing through Electricity is heated. 3. Writing method according to claim 1, characterized in that a pen made of any material is brought to the temperature required for melting the dye indirectly by an electric heater. Fig.l. Fig 2.