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Class Information
Number: 400/191
Name: Typewriting machines > Including interposed inking device (e.g., ribbon) for record-medium
Description: Subject matter wherein significance is attributed to a transfer-medium* which is intended to be positioned between a record-medium* and a type-face* to have simultaneous surface contact with the type-face and the record-medium to form a character* on the record-medium, or to the manner of renewing the transfer characteristics of the transfer-medium while it is on the typewriter, or to the manner of holding the transfer-medium on the typewriter, or to the manner of moving the transfer-medium relative to the print-point* on the typewriter.

Sub-classes under this class:

Class Number Class Name Patents
400/194 Endless ribbon or cartridge therefor 35
400/210 For boldface typing 16
400/209 For bottom-strike typewriter 2
400/204 For typing plural copies simultaneously with ribbon(s) (e.g., duplicate typing) 1
400/211 Including mechanism for shifting ribbon laterally at print-point 27
400/193 Inking device handheld during typing 17
400/247 Means auxiliary to ribbon mechanism (e.g., shield, guide, etc.) 111
400/192 Moved by continuously rotating power drive intermittently applied 6
400/207 Package for ribbon facilitating mounting of ribbon on typewriter (e.g., ribbon cartridge) 208
400/197 Renovation of used ribbon 71
400/203 Ribbon disposed within platen 1
400/242 Ribbon spool or mount therefor 125
400/237 Ribbon, per se 50
400/223 Ribbon-feeding mechanism 87
400/218 Ribbon-reversing mechanism 15

Patents under this class:

Patent Number Title Of Patent Date Issued
8557368 Substrate, system and method for magnetic ink character recognition encoding Oct. 15, 2013
7699550 Modular printer Apr. 20, 2010
6899478 Method and machine for card color printing May. 31, 2005
6227648 Print roll having an ink return tray May. 8, 2001
6071025 Printer system having two or more ink cartridges Jun. 6, 2000
5779372 Hot stamp imprinting system with locking cam reel hubs Jul. 14, 1998
5775821 Ribbon cassette for a printing apparatus Jul. 7, 1998
5601373 Spur gear ratchet mechanism for thermal transfer printer Feb. 11, 1997
5505550 Printer and method of supplying continuous paper to printing portion Apr. 9, 1996
5275495 Ribbon re-inking mechanism Jan. 4, 1994
5100249 Check protector with means for printing amount in bands of different colors Mar. 31, 1992
4899172 Method and apparatus for perforating indicia on used thermal transfer ribbon within a cassette Feb. 6, 1990
4684273 Ribbon shield for impact printer and method for controlling ink flow therein Aug. 4, 1987
4591282 Drive mechanism for a ribbon disc May. 27, 1986
4470350 Method of impact printing with electrostatic or magnetic powder Sep. 11, 1984
4461586 Ink ribbon for use in electrothermic non-impact recording Jul. 24, 1984
4093061 Disc ink ribbon Jun. 6, 1978

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