Inventor · disambiguated record
Masahito Saeki
Also filed as: SAEKI MASAHITO
44 granted patents·1 pending application·40 citations·filing 2013–2025
96Inventor score
Top patents by PatentIndex Score
45 records- 0195US10429795B2Image forming apparatus operable with a cartridge having a memory and a terminalBROTHER IND LTD·Filed 2018·Granted Oct 1, 2019·12 cites·6 claims
- 0294US11237497B2Image forming apparatus including multiple photosensitive drums and multiple developing rollersBROTHER IND LTD·Filed 2020·Granted Feb 1, 2022·3 cites·12 claims
- 0391US10859940B2Image forming apparatus with developing cartridges having increased toner capacities and reducible of contact duration between developing rollers and photosensitive drumsBROTHER IND LTD·Filed 2019·Granted Dec 8, 2020·4 cites·19 claims
- 0491US9796542B2Sheet feeding device and image forming apparatus employing the sameBROTHER IND LTD·Filed 2016·Granted Oct 24, 2017·5 cites·9 claims
- 0590US11789405B2Drum cartridge in which first storage medium of toner cartridge and second storage medium of drum cartridge are aligned in mounting direction, and image forming apparatus to which drum cartridge is mountableBROTHER IND LTD·Filed 2022·Granted Oct 17, 2023·1 cites·18 claims
- 0689US2025291312A1Drum cartridge in which first storage medium of toner cartridge and second storage medium of drum cartridge are aligned in mounting direction, and image forming apparatus to which drum cartridge is mountableBROTHER IND LTD·Filed 2025·Application pending·0 cites
- 0788US10969737B2Image forming apparatus and method for ensuring adequate torque of development motor and suppressing reduction in printing speed in low-temperature environmentBROTHER IND LTD·Filed 2019·Granted Apr 6, 2021·3 cites·17 claims
- 0886US9709943B2Image forming apparatusBROTHER IND LTD·Filed 2017·Granted Jul 18, 2017·2 cites·7 claims
- 0984US12339617B2Drum cartridge in which first storage medium of toner cartridge and second storage medium of drum cartridge are aligned in mounting direction, and image forming apparatus to which drum cartridge is mountableBROTHER IND LTD·Filed 2023·Granted Jun 24, 2025·0 cites·18 claims
- 1083US11209744B2Image forming apparatus having cartridge and exposure deviceBROTHER IND LTD·Filed 2020·Granted Dec 28, 2021·1 cites·7 claims
- 1183US10095158B1Image forming apparatusBROTHER IND LTD·Filed 2018·Granted Oct 9, 2018·2 cites·7 claims
- 1282US11079714B2Image forming apparatus including common drive source for driving developing roller and cam that moves developing roller toward and away from photosensitive drumBROTHER IND LTD·Filed 2020·Granted Aug 3, 2021·1 cites·9 claims
- 1379US9718632B2Sheet supply device and image forming systemBROTHER IND LTD·Filed 2016·Granted Aug 1, 2017·2 cites·8 claims
- 1477US9069316B2Image forming apparatus including movable guide unitSAEKI MASAHITO·Filed 2013·Granted Jun 30, 2015·2 cites·12 claims
- 1574US9323206B2Image forming apparatusBROTHER IND LTD·Filed 2015·Granted Apr 26, 2016·1 cites·13 claims
- 1671US11221585B2Drum cartridge in which first storage medium of toner cartridge and second storage medium of drum cartridge are aligned in mounting direction, and image forming apparatus to which drum cartridge is mountableBROTHER IND LTD·Filed 2020·Granted Jan 11, 2022·0 cites·11 claims
- 1771US10712711B2Drum cartridge in which first storage medium of toner catridge and second storage medium of drum catridge are aligned in mounting direction, and image forming apparatus to which drum catridge is mountableBROTHER IND LTD·Filed 2019·Granted Jul 14, 2020·0 cites·12 claims
- 1870US11334022B2Image forming apparatus including common drive source for driving developing roller and cam that moves developing roller toward and away from photosensitive drumBROTHER IND LTD·Filed 2021·Granted May 17, 2022·0 cites·18 claims
- 1969US10921748B2Image forming apparatus with roller-drivable mechanism, roller-movable mechanism, and nipping-force adjustable mechanismBROTHER IND LTD·Filed 2019·Granted Feb 16, 2021·0 cites·19 claims
- 2069US8953959B2Printing apparatusSAEKI MASAHITO·Filed 2013·Granted Feb 10, 2015·1 cites·12 claims
- 2168US11556089B2Image forming apparatusBROTHER IND LTD·Filed 2021·Granted Jan 17, 2023·0 cites·8 claims
- 2267US10955791B2Image forming apparatusBROTHER IND LTD·Filed 2019·Granted Mar 23, 2021·0 cites·10 claims
- 2365US11429062B2Image forming apparatus with plural moving mechanisms for developing rollersBROTHER IND LTD·Filed 2021·Granted Aug 30, 2022·0 cites·18 claims
- 2465US10274888B2Image forming apparatusBROTHER IND LTD·Filed 2018·Granted Apr 30, 2019·0 cites·13 claims
- 2561US10126698B2Image forming apparatusBROTHER IND LTD·Filed 2017·Granted Nov 13, 2018·0 cites·10 claims
- 2659US9575452B2Image forming apparatusBROTHER IND LTD·Filed 2016·Granted Feb 21, 2017·0 cites·18 claims
- 2753US11372362B2Image forming apparatus including cam having compact structure capable of detection of contact state and separated state of developing roller relative to photosensitive drumBROTHER IND LTD·Filed 2020·Granted Jun 28, 2022·0 cites·22 claims
- 2850US9268291B2Image forming apparatus having circuit boardBROTHER IND LTD·Filed 2015·Granted Feb 23, 2016·0 cites·17 claims
- 2949US8977146B2Printing apparatusSAEKI MASAHITO·Filed 2013·Granted Mar 10, 2015·0 cites·13 claims
- 3048US10656591B2Image forming apparatusBROTHER IND LTD·Filed 2019·Granted May 19, 2020·0 cites·14 claims
- 3147US11061357B2Image forming apparatus with rotation-controllable photosensitive drum and movable developing rollerBROTHER IND LTD·Filed 2019·Granted Jul 13, 2021·0 cites·6 claims
- 3247US10955790B2Image forming apparatusBROTHER IND LTD·Filed 2019·Granted Mar 23, 2021·0 cites·8 claims
- 3346US10281871B2Image forming apparatus with a light shielding part serving as a guide for a detachable cartridgeBROTHER IND LTD·Filed 2018·Granted May 7, 2019·0 cites·8 claims
- 3444US9280139B2Image forming apparatusBROTHER IND LTD·Filed 2014·Granted Mar 8, 2016·0 cites·19 claims
- 3543US10990032B2Image-forming apparatus capable of controlling separation/contact timing between developing rollers and photosensitive drums in timed relation to sheet conveyanceBROTHER IND LTD·Filed 2020·Granted Apr 27, 2021·0 cites·10 claims
- 3642US11353806B2Image forming apparatus configured to stop conveyance of sheet for prescribed time period before conveying sheet to photosensitive drum when sheet is fed from first trayBROTHER IND LTD·Filed 2020·Granted Jun 7, 2022·0 cites·17 claims
- 3742US11181857B2Image forming apparatus moving developing rollers toward and away from corresponding photosensitive drums based on sheet interval between two sheetsBROTHER IND LTD·Filed 2020·Granted Nov 23, 2021·0 cites·8 claims
- 3842US11137718B2Image-forming apparatus capable of moving developing roller between contact position in contact with photosensitive drum and separated position away therefromBROTHER IND LTD·Filed 2020·Granted Oct 5, 2021·0 cites·16 claims
- 3942US9239975B2Image forming apparatus performing a delay process when a number of sheets printed in a unit of time is equal to or greater than a reference numberBROTHER IND LTD·Filed 2015·Granted Jan 19, 2016·0 cites·18 claims
- 4041US11143985B2Image forming apparatus including first and second cams whose rotation angles are offset, and first and second rods that move, by rotations of first and second cams, first and second developing rollers toward and away from first and second photosensitive drums, respectivelyBROTHER IND LTD·Filed 2020·Granted Oct 12, 2021·0 cites·16 claims
- 4141US11009806B2Image-forming apparatus including cam and cam follower for moving developing roller toward and away from photosensitive drumBROTHER IND LTD·Filed 2020·Granted May 18, 2021·0 cites·9 claims
- 4240US11144001B2Image forming apparatus having moving mechanisms to move developing rollers to be in contact with and separated from photosensitive drumsBROTHER IND LTD·Filed 2020·Granted Oct 12, 2021·0 cites·12 claims
- 4340US11106155B2Image-forming apparatus with reduced number of motors for moving developing rollers and altering rotation speed ratio of developing rollers to photosensitive drumsBROTHER IND LTD·Filed 2020·Granted Aug 31, 2021·0 cites·20 claims
- 4440US9811039B2Image forming apparatus using pressing plate and computer-readable medium storing instructions to control movement of pressing plateBROTHER IND LTD·Filed 2016·Granted Nov 7, 2017·0 cites·12 claims
- 4538US9052689B2Image forming apparatusSAEKI MASAHITO·Filed 2013·Granted Jun 9, 2015·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →