Once you understand the basics of pitch, printwheels, typing width, correction memory, ribbons, and correction tape, the next group of typewriter terms becomes much easier to decode.
These additional terms describe how a typewriter handles paper, positions text, keeps up with your hands, and performs more specialized work. Knowing them can help you use your current machine more confidently and compare unfamiliar models without getting lost in the specifications.
12 More Typewriter Terms Worth Knowing
Platen
The platen is the cylindrical roller that supports the paper while you type. Turning the platen knob advances or reverses the paper, and the platen provides the firm surface behind each printed character. A worn or hardened platen can contribute to extra noise, uneven paper feeding, or inconsistent impressions.
Carriage and Carrier
On a traditional manual typewriter, the carriage is the moving assembly that holds the platen and paper. On many electronic machines, the paper remains in place while a smaller print carrier moves across the writing line. That is why a manual may have a carriage return lever while an electronic model lists an automatic carrier return.
Paper Bail
The paper bail is the bar or set of rollers that helps hold the sheet against the platen. It keeps the paper stable and easier to read as it travels through the machine. Some models also use a paper stand or guide to support the portion of the sheet extending above the typewriter.
Paper Capacity
Paper capacity is the widest sheet the machine can physically accept. It is different from the printable writing line because margins and the printing mechanism use part of that width. For example, a portable electronic typewriter may accept 13-inch paper while printing across a 9-inch writing line. Checking both measurements matters when working with forms, envelopes, labels, or unusually wide sheets.
Line Spacing and Index
Line spacing controls the vertical distance between one line of text and the next. Common electronic settings include single, 1.5, double, and sometimes triple spacing. Index forward and reverse move the paper vertically without typing, making it possible to reposition a line, create space, or work with subscripts and superscripts.
Margin Stops and Margin Release
Left and right margin settings define where each line begins and ends. Manual machines may use physical margin stops, while electronic machines commonly use keyboard controls. Margin release temporarily lets you type or move beyond a set margin without permanently changing the document layout.
Tabulation and Decimal Tab
A tab moves the printing position directly to a preset point, which is useful for indents, lists, columns, and forms. A decimal tab is more specialized: it aligns a column of numbers around the decimal point so prices, totals, and accounting figures remain orderly even when the numbers have different lengths.
Impression Control
Impression control adjusts how firmly the machine strikes the ribbon and paper. A stronger setting can help when typing on multipart forms, while a lighter setting may be appropriate for ordinary single sheets. On the Nakajima WPT-150, for example, three impression levels provide control for different paper jobs.
Keystroke Buffer
A keystroke buffer briefly holds characters when your fingers move faster than the typewriter can print. The machine then finishes printing those queued characters in order. This temporary buffer helps a quick typist maintain rhythm, but it is not the same as correction memory or document storage.
Characters Per Second
Characters per second, usually abbreviated as CPS, describes the rated printing speed of an electronic typewriter. It measures the mechanism rather than the operator. A model rated at 12 CPS can print up to twelve characters per second, while many office-focused IBM Wheelwriters are rated for faster output.
Line Find and Relocate
Line Find helps an electronic typewriter return to a previously typed line, including across blank areas of the page. After you make a correction, Relocate moves the printing position back to the point where typing originally stopped. Together, these controls reduce the guesswork involved in revising text directly on paper.
Reprint and Stop Codes
Reprint allows compatible electronic models to print previously entered or stored material again without retyping every character. Stop codes tell the machine to pause during that process so the operator can insert changing information, such as a name, date, or amount. These features are especially useful for recurring letters, forms, labels, and office documents.
See the Language in a Real Product Listing
Nakajima WPT-150 Example
The Nakajima WPT-150 lists a 13-inch paper capacity, selectable line spacing, programmable tab positions, left and right margin controls, three impression levels, a paper bail, a platen knob, a 20-keystroke buffer, automatic carrier return, and relocation. In plain English, it gives you practical control over paper placement, document layout, typing rhythm, and direct-on-page corrections without requiring a computer.
Which Terms Matter Most to You?
Creative writers may care most about line spacing, margins, typing feel, and portability. Offices completing forms may place greater value on paper capacity, decimal tabs, impression control, reprint, and stop codes. Someone choosing a simple everyday machine may never need advanced document functions at all.
The best specifications are the ones that support the work you actually plan to do. Typewriters.com provides detailed product specifications and a comparison chart to help you match those terms to the right machine.
Need help decoding a feature or choosing a machine? Call (404) 377-1884 Monday–Friday, 9 AM–5 PM ET, or email info@typewriters.com .
