Inventor · disambiguated record
Ken Yoshizuka
Also filed as: YOSHIZUKA KEN
30 granted patents·4 pending applications·227 citations·filing 1989–2009
96Inventor score
Top patents by PatentIndex Score
34 records- 0188US7251421B2Image forming apparatus for performing calibration without reducing throughput in printingSEIKO EPSON CORP·Filed 2005·Granted Jul 31, 2007·10 cites·10 claims
- 0281US5761567AImage forming apparatus with jam detection for permitting completion of a copy operationMITA INDUSTRIAL CO LTD·Filed 1996·Granted Jun 2, 1998·32 cites·7 claims
- 0381US5655207AImage forming apparatus provided with a tab sheet inserting functionMITA INDUSTRIAL CO LTD·Filed 1996·Granted Aug 5, 1997·33 cites·6 claims
- 0479US4970549ADisplay device in image forming apparatusMITA INDUSTRIAL CO LTD·Filed 1989·Granted Nov 13, 1990·22 cites·4 claims
- 0578US7286775B2Image formation device enabling switching display of remaining developing agent in monochrome printing modeSEIKO EPSON CORP·Filed 2005·Granted Oct 23, 2007·6 cites·11 claims
- 0675US5732307AImaging apparatus having an imaging operation controlled in coordination with a sheet storage operationMITA INDUSTRIAL CO LTD·Filed 1996·Granted Mar 24, 1998·26 cites·5 claims
- 0774US7317880B2Image forming device for controlling density adjustment based on a type of development unitSEIKO EPSON CORP·Filed 2005·Granted Jan 8, 2008·4 cites·5 claims
- 0873US7233749B2Image forming device for performing calibration by patch patternSEIKO EPSON CORP·Filed 2005·Granted Jun 19, 2007·4 cites·6 claims
- 0963US7292806B2Image forming apparatus and an image forming method using a plurality of monochromatic developer cartridgesSEIKO EPSON CORP·Filed 2005·Granted Nov 6, 2007·2 cites·15 claims
- 1063US7209672B2Image forming apparatus and an image forming methodSEIKO EPSON CORP·Filed 2005·Granted Apr 24, 2007·2 cites·14 claims
- 1163US6873802B2Methods of verifying requirement for replacement of a main unit and of a component of image formation apparatus and judging advisability of recommendation for replacementSEIKO EPSON CORP·Filed 2003·Granted Mar 29, 2005·8 cites·49 claims
- 1259US7583399B2Printing device and print management methodSEIKO EPSON CORP·Filed 2005·Granted Sep 1, 2009·1 cites·5 claims
- 1357US5014088AInhibitable image forming apparatus including entered code data release meansMITA INDUSTRIAL CO LTD·Filed 1989·Granted May 7, 1991·10 cites·3 claims
- 1456US7340201B2Image formation device, development unit, and computer systemSEIKO EPSON CORP·Filed 2003·Granted Mar 4, 2008·4 cites·50 claims
- 1554US5268728AImage forming apparatus with intermediate trayMITA IND CO INC·Filed 1992·Granted Dec 7, 1993·12 cites·4 claims
- 1653US7929884B2Image forming apparatus, developing unit, and computer systemSEIKO EPSON CORP·Filed 2009·Granted Apr 19, 2011·0 cites·9 claims
- 1753US7171131B2Image forming apparatus, image forming system, and computer-readable storage mediumSEIKO EPSON CORP·Filed 2004·Granted Jan 30, 2007·5 cites·21 claims
- 1852US7646994B2Image forming apparatus developing unit and computer systemSEIKO EPSON CORP·Filed 2003·Granted Jan 12, 2010·4 cites·8 claims
- 1949US7092653B2Image forming apparatus and image forming systemSEIKO EPSON CORP·Filed 2004·Granted Aug 15, 2006·4 cites·31 claims
- 2046US7177586B2Apparatus and method of forming image using rotary developerSEIKO EPSON CORP·Filed 2005·Granted Feb 13, 2007·0 cites·4 claims
- 2145US6931229B2Apparatus and method of forming image using rotary developerSEIKO EPSON CORP·Filed 2003·Granted Aug 16, 2005·2 cites·3 claims
- 2244US5610700AImage forming apparatus including a system for copying an image on two different sheet typesMITA INDUSTRIAL CO LTD·Filed 1996·Granted Mar 11, 1997·7 cites·19 claims
- 2342US7177568B2Image forming apparatus and an image forming methodSEIKO EPSON CORP·Filed 2005·Granted Feb 13, 2007·0 cites·18 claims
- 2440US7469117B2Image forming apparatus, developing unit, and computer systemSEIKO EPSON CORP·Filed 2003·Granted Dec 23, 2008·1 cites·3 claims
- 2539US5681493AMulti-level energy saving temperature controller for image forming fixing unitMITA INDUSTRIAL CO LTD·Filed 1996·Granted Oct 28, 1997·5 cites·5 claims
- 2639US5066977ASystem for managing the number of image forming operations in an image forming apparatusMITA INDUSTRIAL CO LTD·Filed 1990·Granted Nov 19, 1991·19 cites·4 claims
- 2737US7609403B2Printing device with multiple recording agent cartridges and corresponding print management methodSEIKO EPSON CORP·Filed 2005·Granted Oct 27, 2009·0 cites·9 claims
- 2837US2008292357A1Image Forming Apparatus, Computer-Readable Medium, Image Forming System, and Image Forming MethodTAGUCHI KEIICHI·Filed 2005·Application pending·0 cites
- 2937US2006002729A1Image forming apparatus with reduced printing timeSEIKO EPSON CORP·Filed 2005·Application pending·0 cites
- 3036US5083762AUp-and-down type paper feeding deviceMITA INDUSTRIAL CO LTD·Filed 1989·Granted Jan 28, 1992·4 cites·7 claims
- 3135US2004196488A1Image forming apparatus, an exchange storage unit and an information administering methodSEIKO EPSON CORP·Filed 2004·Application pending·0 cites
- 3234US7113728B2Image forming system and image forming apparatusSEIKO EPSON CORP·Filed 2004·Granted Sep 26, 2006·0 cites·19 claims
- 3334US2006098223A1Image former and computer systemYOSHIZUKA KEN·Filed 2003·Application pending·0 cites
- 3430US5187533AAutomatic document feeder for feeding documents based on signals from a final document detecting device and a normal end detecting deviceMITA INDUSTRIAL CO LTD·Filed 1992·Granted Feb 16, 1993·0 cites·4 claims
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