B41F PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L)
Description
B41F encompasses mechanical and electromechanical apparatus for applying ink or other marking substances to substrates during printing operations. This subclass covers printing presses of various types, including letterpress, lithographic, flexographic, gravure, and screen printing machines, as well as their essential components such as inking systems, feed mechanisms, and impression devices. The classification includes both traditional sheet-fed and web-fed press designs, along with auxiliary equipment directly integrated into the printing process. Related printing technologies using different application methods—such as digital printing, inkjet, or electrostatic printing—are classified elsewhere (B41J and other sections).
20 direct subcodes
Child Classifications
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- B41F 1/00 Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
- B41F 11/00 Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
- B41F 13/00 Common details of rotary presses or machines
- B41F 15/00 Screen printers
- B41F 16/00 Transfer printing apparatus
- B41F 17/00 Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
- B41F 19/00 Apparatus or machines for carrying out printing operations combined with other operations
- B41F 21/00 Devices for conveying sheets through printing apparatus or machines (through platen presses B41F1/28)
- B41F 22/00 Means preventing smudging of machine parts or printed articles (B41F23/00 takes precedence)
- B41F 23/00 Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F 25/00 Devices for pressing sheets or webs against cylinders, e.g. for smoothing purposes
- B41F 27/00 Devices for attaching printing elements or formes to supports (attaching by chemical means B41N6/00)
- B41F 3/00 Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
- B41F 30/00 Devices for attaching coverings or make-ready devices; Guiding devices for coverings (make-ready devices B41N6/00)
- B41F 31/00 Inking arrangements or devices (inking units for platen presses B41F1/40; inking units for cylinder presses B41F3/81)
- B41F 33/00 Indicating, counting, warning, control or safety devices (arrangements of counting devices in platen presses B41F1/00 in cylinder presses B41F3/84; ink supply or metering devices B41F31/02)
- B41F 35/00 Cleaning arrangements or devices
- B41F 5/00 Rotary letterpress machines
- B41F 7/00 Rotary lithographic machines
- B41F 9/00 Rotary intaglio printing presses
Top Applicants
Top 10 applicants by patent filingsfor class B41, 2013–2023, worldwide · Source: EPO PATSTAT
- SEIKO EPSON CORPORATION 8,446
- SEIKO EPSON CORPORATION JP 8,438
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
- CANON JP 5,419
- CANON 4,156
- BROTHER INDUSTRIES JP 3,763
- BROTHER INDUSTRIES 2,779
- RICOH COMPANY JP 2,717
- FUJIFILM JP 2,423
- RICOH COMPANY 1,739