Inks, Typewriter Ribbons and Carbon Paper |
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Page 2
... fibers and would be rubbed off easily unless there were something to make them adhere . A great step in advance was taken in the early part of the nine- teenth century , when inks of the kind now in general use were first made . These ...
... fibers and would be rubbed off easily unless there were something to make them adhere . A great step in advance was taken in the early part of the nine- teenth century , when inks of the kind now in general use were first made . These ...
Page 3
... fibers of the paper , and writing so made is more difficult to erase by scraping or by the action of chemicals than is writing with the older kind of ink . There are certain disadvantages connected with the modern inks . In order to ...
... fibers of the paper , and writing so made is more difficult to erase by scraping or by the action of chemicals than is writing with the older kind of ink . There are certain disadvantages connected with the modern inks . In order to ...
Page 10
... fibers ; how the writing has been kept . 2. CARBON INKS Inks having carbon or carbonaceous compounds in finely divided state for their pigment date back to periods of remote antiquity . For writing purposes they have been superseded to ...
... fibers ; how the writing has been kept . 2. CARBON INKS Inks having carbon or carbonaceous compounds in finely divided state for their pigment date back to periods of remote antiquity . For writing purposes they have been superseded to ...
Page 12
... fiber , leaves an insoluble black deposit of finely divided silver , which is more or less permanent . Heat or ... fiber to which it is applied , the absence of injurious effects upon the fiber , and its permanence in light and to ...
... fiber , leaves an insoluble black deposit of finely divided silver , which is more or less permanent . Heat or ... fiber to which it is applied , the absence of injurious effects upon the fiber , and its permanence in light and to ...
Page 13
... fiber . It must not contain a solvent which , as it evapo- rates , will produce a stained zone around the actual marks . 6. SYMPATHETIC INKS The term sympathetic ink is applied to writing fluids which yield characters that remain ...
... fiber . It must not contain a solvent which , as it evapo- rates , will produce a stained zone around the actual marks . 6. SYMPATHETIC INKS The term sympathetic ink is applied to writing fluids which yield characters that remain ...
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Common terms and phrases
24 hours 48 hours amount applied arc or ultra-violet breaking strength Bureau of Standards CANCELING INKS carbon paper cent rag bond chemical coated coloring matter composition Concentrated ink copying ink determined dilute direct sunlight dissolved ethyl acetate examination fabric ferric ferrous sulphate fiber filter formula Gallic acid glycerol Government master specification gum arabic heat hectograph hydrochloric acid inches ingredients ink containing insoluble iron gallotannate inks large number legible light for 24 logwood manifold copies manufacture marks method methyl violet mixture modern inks nigrosine number of manifold nutgalls oxalic acid oxide permanence phenol pigment press copies Printing Inks Prussian blue reagents sample should show Schultz sediment soap sodium bisulphite Soluble blue solvent stamp pad Standards Circular streaks strips suitable sulphide sunlight for 48 synthetic dyes tannic acid tannin temperature test specimens typewriter ribbons ultra-violet light United States Government weigh writing fluid writing inks