HITACHI PRINTING SOLUTIONS, LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G03G ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY 13425
 
  
 
B41J TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS 4957
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 13192
 
  
 
B65H HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES871
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 852
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 8234
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 7440
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 5193
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 4124
 
  
 
B41F PRINTING MACHINES OR PRESSES 242

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7136615 Heat fixing unit with improved belt handlingSep 22, 04Nov 14, 06[G03G]
7090340 Inkjet recording head and inkjet recording apparatus using the sameDec 03, 03Aug 15, 06[B41J]
7092117 Print systemJul 13, 01Aug 15, 06[G06F]
7022448 Electrophotographic toner and image-forming systemSep 02, 03Apr 04, 06[G03G]
6876373 Laser power correction method and device for the sameJan 10, 03Apr 05, 05[B41J]
6853829 Multi-color printer and method thereforDec 13, 02Feb 08, 05[G03G]
6843554 Ink jet head and method of production thereofApr 18, 03Jan 18, 05[B41J]
6829449 Image forming apparatus with transfer bias inverting functionMay 30, 03Dec 07, 04[G03G]
6808329 Paper ejection apparatus in a print apparatusSep 04, 02Oct 26, 04[B41J, B65H]
6799507 Web printersAug 13, 01Oct 05, 04[B41F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7206329 Driving system for a semiconductor laser deviceExpiredJun 21, 04Apr 17, 07[H01S]
6829265 Semiconductor laser arrayExpiredMay 15, 02Dec 07, 04[H01S]
6825457 Two-dimensional beam writing position detecting device and image forming apparatus using the detecting deviceExpiredMar 01, 02Nov 30, 04[H01J]
6813462 Electro-photographic developing unitExpiredJan 27, 03Nov 02, 04[G03G]
6796632 Refresh ink ejection device and inkjet recording device including the refresh ink ejection deviceExpiredMar 07, 03Sep 28, 04[B41J]
6792235 Electrophotographic apparatus including transferring deviceExpiredJul 08, 02Sep 14, 04[G03G]
6786577 Inkjet print head and method for making the sameExpiredOct 15, 02Sep 07, 04[B41J]
6783909 Electrostatic image developing toner and image forming methodExpiredJan 10, 03Aug 31, 04[G03G]
6782237 Shape-correcting device for sheets and electrophotographic deviceExpiredAug 30, 02Aug 24, 04[G03G]
6767087 Inkjet head provided with deflecting electrodes for deflecting ejected ink dropletsExpiredDec 27, 02Jul 27, 04[B41J]
6754464 Full-color recorder using potential split developing processExpiredApr 17, 02Jun 22, 04[G03G]
6749291 Inkjet recording device that reuses refresh inkExpiredApr 03, 03Jun 15, 04[B41J]
6738586 Print control method of electrophotograph and image formation apparatus with potential sensor using the methodExpiredFeb 08, 02May 18, 04[G03G]
6719411 Ink jet recording headExpiredOct 31, 02Apr 13, 04[B41J]
6694119 Perfecting press apparatusExpiredMar 07, 03Feb 17, 04[G03G]
6686943 Control method of an electrophotographic record apparatus and image formation apparatus including controlling developing bias and photoconductor surface potentialExpiredJul 12, 02Feb 03, 04[G03G]
6684036 Image forming apparatusExpiredMar 08, 02Jan 27, 04[G03G]
6684051 Print system and registration control method at print start time of the print systemExpiredJul 23, 02Jan 27, 04[G03G]
6679586 Inkjet recording device capable of performing ink refresh operation without stopping printing operationExpiredSep 13, 02Jan 20, 04[B41J]
6679589 Ink jet print head and method of production thereofExpiredMay 31, 02Jan 20, 04[B41J]

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