“THERMO-FAX” Brand Copying Machines make a copy in just 4 seconds. This speed is possible because copies are made electrically directly from an original. This speed simplifies paperwork systems. Statements go out faster. Gummed address labels are made instantly. Correspondence is answered without time-consuming dictation. Even laminating can be done for papers needing lasting protection. To learn all this fast copying can do, call your local dealer. Or mail the coupon.

MINNESOTA MINING AND MANUFACTURING COMPANY

…WHERE RESEARCH IS THE KEY TO TOMORROW

Portable Photo Copier Folds Like a Trunk When Carried

Entirely self-contained, a portable photo copying machine now on the market is complete with camera having an adjustable focus, spool of sensitized paper, built-in severing device that cuts paper to proper size, and all the developing chemicals. When folded for carrying it closes up like a trunk. It is not necessary to drain the liquids. The camera has a self-timer synchronized with the lights to turn them off when proper exposure has been given. Material to be copied is held by the front of the case which drops down and can be adjusted vertically. Made in two sizes, the larger unit weighs sixty-eight pounds and the smaller thirty-eight.

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After October 1, kiss your masters goodbye.

The remarkable new Xerox 2400 will he available.

A whole new breed of machine. A machine that knows no master. A machine that makes all the copies you want right from the original. A machine that makes copies too fast to be a copier. A machine that makes copies so simply it couldn’t be a duplicator.

The new 2400 makes 40 copies a minute, 2400 copies an hour, of anything printed, written or drawn—from all colors —automatically. Read the rest of this entry »

One minute is all it takes

… to make 5 photo-exact copies of any record for 2-1/2c each.
Letters, news clippings, pencil or ink records . . . even carbon and spirit duplicator copies can be reproduced by anyone in your office. No change in your present room lighting!

… to make a translucent “whiteprint master” for 100. No time lost, now, when you wish to produce quantities of blueprints or whiteprints from opaque or two-sided material.
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New! The “909″ Copier Copies Anything for Keeps!

Outstanding Features:

“909″ COPIES PERMANENTLY
High contrast black-and-white copies on bond-quality paper. Translucent and systems paper available. Long-lasting copies not affected by heat, light or humidity. Read the rest of this entry »

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Printing Without Ink

Here’s how one man beat the high cost of printing by inventing Xerography—a new process which requires no ink, rollers or heavy presses.
CHESTER CARLSON, patent attorney, wanted to have one of his manuscripts published but the cost astonished him. It started him thinking about methods for reducing printing costs. And what’s more important, it started him experimenting.

Soon he found it essential to ask for financial heLp. The Battelle Memorial Institute of Research with the sponsorship of the Haloid Company, came to his rescue. The result? Well, it has just been announced that a revolutionary process of inkless printing has finally been developed. It’s expected to change radically most printing and publishing operations.

Named “Xerography,” the method reproduces pictures and text at a speed of 1200 feet within 45 seconds after exposure of the photographed material. It substitutes for liquid ink a fine, iron powder mixed with a dry plastic substance.
With the prospect of terrifically reduced printing costs, inventor Carlson feels he has really accomplished something. Says he might even publish a manuscript, now.

Here’s how it works. 1 & 2: Surface of coated plate is electrically charged as it passes under wires.

3: Copy is projected through lens in camera. Light releases charge, leaving electric image.

4: Negatively-charged powder sticks to positively-charged image.

5: Sheet of paper is placed over plate and receives positive charge. 6: Positively-charged paper attracts powder from plate, forming direct positive image.

7: Image heated to fuse powder into print.

Ah, life before the Xerox machine.

LETTERS COPIED AT HIGH SPEED

Copies are speedily made of correspondence and other business records with the aid of a new photographic duplicating machine. Through its use, a letter may be photographed directly upon a sheet of specially sensitized paper, requiring an exposure of only a fraction of a second, and developed at once in a portable darkroom. The instrument is especially designed for libraries, banks, insurance companies, and others requiring frequent duplication of card records and correspondence.