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PCE
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DIFF Subgroup
B41J 33/51

and characterised by the use of particular reversing control means

Introduced: September 1968

Full Title

Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material > Ribbon-feed devices or mechanisms > with arrangements for reversing the feed direction > automatically > and characterised by the use of particular reversing control means

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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  • B41J 33/512 using a pivoted reversing-feeler engaging the external periphery of the wound ribbon IPC+CPC Available in IPC and CPC
  • B41J 33/514 using a pivoted reversing-feeler engaging the interior of the wound ribbon IPC+CPC Available in IPC and CPC
  • B41J 33/516 using a reversing-feeler responsive to the tension of the ribbon IPC+CPC Available in IPC and CPC
  • B41J 33/518 the reversing-feeler engaging buttons or the like secured to the ribbon near its ends IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B41,2013–2023, worldwide · Source: EPO PATSTAT

  1. SEIKO EPSON CORPORATION 14,672
  2. CANON 14,153
  3. RICOH COMPANY 8,049
  4. SEIKO EPSON CORPORATION JP 8,044
  5. HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,312
  6. BROTHER INDUSTRIES 6,887
  7. KYOCERA DOCUMENT SOLUTIONS 5,463
  8. CANON JP 5,001
  9. KONICA MINOLTA CORPORATION 4,512
  10. BROTHER INDUSTRIES JP 3,681

Top Applicants (CPC)

Class B41,2013–2023, worldwide · Source: EPO PATSTAT

  1. SEIKO EPSON CORPORATION 8,446
  2. SEIKO EPSON CORPORATION JP 8,438
  3. HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
  4. CANON JP 5,419
  5. CANON 4,156
  6. BROTHER INDUSTRIES JP 3,763
  7. BROTHER INDUSTRIES 2,779
  8. RICOH COMPANY JP 2,717
  9. FUJIFILM JP 2,423
  10. RICOH COMPANY 1,739