The daily morning journal and courier., 1901-04-01
INK BECOMING A BYGONE.
PRINTING IS NOW SUCCESSFULLY
 BEING DONE
Without the Use of the Black Pigment

Without the Use of the Black Pigmen
 Printers are said to be much interest
 ed in the work of an English photo
 grapher, F. Greene of London, who
 has met with considerable success in
 producing a paper by means of electric
 ity which may be printed upon wthoue
 employing inks or the use of any pre-
 vious sensitizing matter by saturation,
 as has hitherto been done.
 Instead of saturating this "electro-
 graphic" paper with the sensitizing
 materials, as has hitherto been done, it
 has been found best to mix them with
 the pulp in the process of manufacture,
 and so radical departure has been
 made and a new machine-made paper
 has been invented that has rare prop
 critics. The chemicals used can be pro-
 duced as cheaply as common paper
 The prepared paper is stable and color-
 less; 1t Is unaffected by any other agent
 than the electric current, may be kept
 indefinitely and sent to the press direct
 ly from the roll as manufactured with | i'O Pr CiiiiiiiidAy liCdllLSlll WLdlcNSI
 yields instantly dense, black perma-
 nent print; requires no subsequent fix
 ing or developing-indeed, Is ready for
 distribution immediately, as there is
 nothing like ink to smirch or require drying. Briefly, 1t meets all the re-
 quirements of a perfect medium for electric printing. The machine for elec- tric printing is simply an ordinary press divested of all its hiking mechanism and having the cylinder or paper bear ing surface covered with a suitable conducting metal. The work of "mak- ing ready" is the same as for ordinary printing and line blocks, electrotypes, wood cuts, half tones, engravings and all kinds of designs in relief may be used al will
 The form is connected with one pole of the dynamo or battery-for most purposes the current may be taken from an ordinary incandescent light wire-the paper-carrying cylinder or surface is connected with the other pole. Thus the metal surfaces of both cylinders are the electrodes, while the paper is in reality very thin cell, in which the pulp is an inert medium and the contained chemicals the electrolyte which is to be subjected to electrolysis. As the cylinders approach each other | to press the paper as it is fed between | them the current is switched on auto matically and flows from one cylinder | through the paper at the points of con- tact to the other cylinder, the impress | sion being produced instantly by cleo { tro- chemical action. The paper pos- | sesses conducting properties. so that ! the voltage used may be from ten to one hundred and ten volts and four for the largest machines. All inkling mechanism being dispensed with the power for driving the press Is much less.
 For given piece of work the cost of current for the actual printing is said to be only one7half that of ink, while at least a saving of third the cost of presses Is assured. The new process lends itself readily to all speeds, even to the fastest web presses At an exhbi- ton at Blackpool, England, witnessed by large company of printers and sci- a rotary press was run at the rate of six thousand impressions per hour and the work was declared perfect In every particular. Relative to the ap- of electric printing the Jour- nal of Printing and Kindred Industries i If the British Empire says 1t greatly , resembles lthographic work. It is re- { ported that several of the great London lailies have placed their plants at the , disposal of the invention for an ex- f test of the process.-Electrical ' Review. I