No, just the misspeller in you.
Main Entry: cal·en·der
Pronunciation: \ˈka-lən-dər\
Function: transitive verb
Inflected Form(s): cal·en·dered; cal·en·der·ing \-d(ə-)riŋ\
Etymology: Middle French calandrer, from calandre machine for calendering, from Vulgar Latin *colendra cylinder, modification of Greek kylindros — more at cylinder
Date: 1513
: to press (as cloth, rubber, or paper) between rollers or plates in order to smooth and glaze or to thin into sheets
— cal·en·der·er \-dər-ər\ noun
The calender is a series of hard pressure rollers at the end of a papermaking process (on-line). Those that are used separate from the process (off-line) are also called "supercalenders". The purpose of a calender is to smooth out the paper for printing and writing on it, and to increase the gloss on the surface.
The word "calender" itself is a derivation of the word kylindros, the Greek word for "cylinder".
In the past, the paper sheets were worked on with a polished hammer or pressed between polished metal sheets in a press. With the continuously operating paper machine it became part of the process of rolling the paper (in this case also called web paper). The pressure between the rollers, the "nip pressure", can be reduced by heating the rolls and/or moistening the paper surface. This helps to keep the bulk and the stiffness of the web paper which is beneficial for its later use.
Modern calenders have "hard" heated rollers made from chilled cast iron or steel, and "soft" rollers coated with polymeric composites. This widens the working nip and distributes the specific pressure on the paper more evenly.