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Class Information
Number: 400/240.2
Name: Typewriting machines > Including interposed inking device (e.g., ribbon) for record-medium > Ribbon, per se > Including differently pigmented fields > With prevention of bleeding between adjacent fields
Description: Subject matter wherein significance is attributed to a manner of impeding the migration of the coloring agent from one zone to another zone next to it.

Patents under this class:

Patent Number Title Of Patent Date Issued
8491078 Printing apparatus and printing method Jul. 23, 2013
5144331 Drive control method for thermal transfer printer Sep. 1, 1992
5086697 Inked ribbon cartridge for money order imprinter Feb. 11, 1992
4984912 Multicolored fabric printing ribbon including nonbleeding, nonmigrating flushed pigment Jan. 15, 1991
4867588 Method for manufacture of a mutli-color ink ribbon including ink migration barrier Sep. 19, 1989
4712931 Color printer including a multiple color ink ribbon cartridge and tensioning device Dec. 15, 1987
4476176 Multi-colored printing ribbon ink barrier system Oct. 9, 1984
4317637 Typewriter ribbon including a correction strip Mar. 2, 1982
4037708 Multicolor ink ribbon control for a typewriter Jul. 26, 1977
3991676 High speed printer with multicolor ink ribbon Nov. 16, 1976
3981387 Method for inking preassembled ribbon cartridges Sep. 21, 1976

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