Inventor

SAKAGUCHI SHINTARO

JP41 patents

⚠️ This page may combine multiple inventors who share the name “SAKAGUCHI SHINTARO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SAKAGUCHI SHINTARO

BROTHER IND LTD

Image forming apparatus

Image forming apparatus including multiple photosensitive drums and multiple developing rollers

Image forming apparatus having movable developing roller with bidirectionally-rotatable cam

Image forming apparatus and method for ensuring adequate torque of development motor and suppressing reduction in printing speed in low-temperature environment

Image forming apparatus with developing cartridges having increased toner capacities and reducible of contact duration between developing rollers and photosensitive drums

Image forming apparatus and method to determine control temperatures for cooling control of inside of the image forming apparatus

Image forming apparatus and method to determine control temperatures for cooling control of inside of the image forming apparatus

Image forming apparatus

Image forming apparatus including common drive source for driving developing roller and cam that moves developing roller toward and away from photosensitive drum

Image forming apparatus having cartridge and exposure device

Image forming apparatus including common drive source for driving developing roller and cam that moves developing roller toward and away from photosensitive drum

Image forming apparatus and method for controlling the same

Image forming apparatus

Image forming apparatus

Image forming apparatus including cam having compact structure capable of detection of contact state and separated state of developing roller relative to photosensitive drum

Image forming apparatus configured to stop conveyance of sheet for prescribed time period before conveying sheet to photosensitive drum when sheet is fed from first tray

Image forming apparatus

Image forming apparatus moving developing rollers toward and away from corresponding photosensitive drums based on sheet interval between two sheets

Image forming apparatus having moving mechanisms to move developing rollers to be in contact with and separated from photosensitive drums

Image-forming apparatus capable of moving developing roller between contact position in contact with photosensitive drum and separated position away therefrom

Image-forming apparatus with reduced number of motors for moving developing rollers and altering rotation speed ratio of developing rollers to photosensitive drums

Image-forming apparatus including cam and cam follower for moving developing roller toward and away from photosensitive drum

Image-forming apparatus capable of controlling separation/contact timing between developing rollers and photosensitive drums in timed relation to sheet conveyance

Image forming apparatus

Image forming apparatus

Transfer belt unit including transfer belt and belt memory configured to store therein

Image forming apparatus capable of calculating deterioration quantity of photosensitive drum based on the number of rotations in contact and separation states

Image forming apparatus

Image forming apparatus and control method therefor

Image forming apparatus which switches from color to monochrome mode with charging and developing bias reduction

Image forming apparatus providing cartridge replacement notification

Recording apparatus

Recording apparatus

Image forming apparatus and method for controlling the same

Image forming apparatus

Image forming apparatus with developing roller separation processing

Image forming apparatus performing curl suppressing process

Image-forming apparatus for controlling speed of fan based on detected temperature

Image forming apparatus and image forming system including clutch and controller which controls whether clutch allows drive force to be transmitted to driving member

Recording apparatus

YAMAMOTO HIROYUKI

Image forming apparatus for selectively powering a user authentication device