Typewriting paper

Wikstrom (1969) reported that, in dermatitis due to typewriting paper, the allergen appeared to occur in the sizing contained in the paper, a gum resin that consists partly of rosin. Sensitivity to the typewriting paper can also be accompanied by sensitivity to rosin, juniper tar, and Sty rax. All of these substances contain mixtures of resinous acids, one of which is abietic acid. Allergic reactions to abietic acid were demonstrated in sensitivity to typewriting paper. 

Standard typewriter paper is the United States is 85 in. by 11 in. What are these dimensions in centimeters ... 

A year later, a novel method of encoding chemical structures via typewriter input (punched paper tape) was described by Feldmann [42]. The constructed typewriter had a special character set and recorded on the paper tape the character struck and the position (coordinates) of the character on the page. These input data made it possible to produce tabular representations of the structure. 

Typewriter correction fluid was first invented by Bette Nesmith Graham J1 21 Her early version for the product consisted of a white tempura paint to correct mistakes. Looking for a mixture that was both quick-drying and barely detectable, she discovered a formulation that she would later sell to the Gillette Company in 1979. The formula was modified slightly in the 1980s. What is the chemistry of Liquid Paper ... 

Alkali Blue pigments are used in large volume to color office articles, especially ribbons for typewriters and computers, as well as blue copy paper. Other areas of application, such as the plastics industry, do not employ Alkali Blue pigments because of their lack of fastness. 

Its coloristic properties make P.B.l a suitable and widely used colorant for special printing inks. The pigment may be incorporated without problems in oily binders, i.e., in letterpress and offset inks. It is equally often used in publication gravure printing inks based on toluene and in packaging printing inks based on NC. Problems which may arise as P.B.l is incorporated in these vehicles are mentioned under P.V.2. Besides, P.B.l lends color to paper, wallpaper, typewriter ribbons, and other media, although it is often difficult to disperse. 

Carbon black includes several forms of artificially prepared carbon, such as furnace black, channel black, lamp black, and animal charcoal. It is a finely divided form of carbon consisting of particles of extremely fine size. It is obtained by partial combustion (in 50% required air) of vapors of heavy oil fraction of crude oil in a furnace or by thermal cracking of natural gas. Carbon black is used in many abrasion-resistant rubber products including tire treads and belt covers. It also is used in typewriter ribbons, printing inks, carbon paper, and paint pigments. It also can be an absorber for solar energy and UV radiation. 

Because of their coloring strength, cationic dyes are used in the office supplies industry for the manufacture of ink, typewriter ribbon, and copying paper. 

The text prepared by the author(s) should be single-spaced within a frame which measures 14 x 21 centimeters, and fonts of the type Courier 12, Times 12, Symbol 12, etc. should be used for the running text and the equations. The final text is conveniently prepared on 85% blue-line paper supplied by the publisher by means of a high-quality typewriter or printer. More detailed instructions are available from the publisher. 

Software tools do not require validation if they are incidental to the creation of regulated records that are subsequently maintained in traditional paper-based systems. Examples include word processors that essentially act as typewriters, and project scheduling tools that do not have a regulatory dimension. Software that provides record storage and retrieval facilities for incidental records would be treated like traditional file cabinets. Overall reliability and trustworthiness would derive primarily from well-established and generally accepted procedures and control for paper records. 

Dot-matrix printers are the oldest type of printer, as well as the simplest. This type of printer uses an array of pins to strike an inked ribbon, which in turn makes a pattern of dots on the paper. The patterns of dots ultimately form letters and images. Dot-matrix printers are easy to use as well as very inexpensive. However, they are relatively slow and very noisy (as anyone who has tried to talk on the phone while using one can attest). The best dot-matrix printers are only near letter quality (letter quality is the quality found with a typewriter). They are still in use because they are the only printer that can print on carbon copy forms (invoices, receipts, etc.). Because the pins on dot-matrix printers actually strike the paper, they can make simultaneous copies when used with pressure-sensitive forms or carbon paper. 

I was shocked to see what she did next. When the paper starting coming out of the laser printer, she grabbed it and "ripped" it from the printer like you might do if the paper were in an old typewriter The printer s exit rollers complained bitterly and made a noise that made me cringe. I don t know what hurt worse, my hand or my ears. She did this for every sheet of paper that she printed. I didn t say anything, since my health was of primary concern at the time. 

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