Riso Kagaku Corporation

Kazuyuki Aoki

Masaaki Shinohara

Hiroshi Sugitani

Tomohiko Shimoda

Tetsunori Saito

Takuya Okamura

Naoya Masuda

A conveyance apparatus includes a conveyance roller, a conveyance motor, a back tension roller, a conveyance speed detector, a brake, and a controller. The controller is configured to: based on a conveyance speed of a web detected by the conveyance speed detector, control a value of a drive control parameter of the conveyance motor such that the conveyance speed of the web is equal to a target speed; and, based on an output torque of the conveyance motor corresponding to the value of the drive control parameter, adjust a braking force of the brake applied to the back tension roller which applies a tension to the web such that the tension of the web is equal to a target tension.

Conveyance apparatus of web print medium

A printing apparatus includes a plurality of components for the printing apparatus, and a housing configured to house the plurality of components in an inside of the housing and having a plurality of access portions used by a user and a service man to access the inside of the housing. The access portions have predetermined difficulty levels of access of accessing the inside of the housing from the access portions respectively. At least one or more of the plurality of components housed in the inside of the housing are arranged based on positions and the predetermined difficulty levels of access of the access portions and a frequency of access to the at least one or more of the plurality of components by the user and the service man.

Printing apparatus with access portions for access to inside of housing

A printing apparatus includes: a first component; a second component; a first housing configured to house the first component; a second housing configured to house the second component and movably supported on an installation surface on which the printing apparatus is installed; and a connector configured to connect the second housing openably and closably to the first housing in a horizontal direction and to allow a tilt of a turning axis of the second housing to the first housing and an upward and downward movement of the second housing to the first housing upon opening and closing of the second housing.

Printing apparatus with separable housings

A printing machine includes a printing unit which performs printing while transferring a sheet at a printing transfer speed, a circulation transfer unit which receives the sheet after simplex printing and transfers the sheet by reversing the sheet upside down, during duplex printing; and a paper refeed unit which refeeds, to the printing unit, the sheet transferred by the circulation transfer unit after simplex printing, wherein the circulation transfer unit includes a reversing unit which receives the sheet at the printing transfer speed, reverses the sheet upside down by switching back the sheet and accelerates the sheet up to a circulation transfer speed which is higher than the printing transfer speed when sheet transfer is restarted after temporal stop in the switching back, and a horizontal transfer unit which transfers the sheet switched back by the reversing unit, at the circulation transfer speed.

Printing machine

In a sheet discharge device, sheets are sequentially discharged by a sheet discharge roller with a leading end of each of the sheets in the lead in a sheet discharge direction and stacked on a sheet receiving tray inclining relative to a vertical direction. A sheet reverse member is disposed at such a position relative to the sheet receiving tray and the sheet discharge roller that a trailing end of a first sheet discharged by the sheet discharge roller reaches the sheet reverse member before a leading end of a second sheet discharged subsequently to the first sheet collides with the first sheet when a sheet time interval between the trailing end of the first sheet and the leading end of the second sheet is set to a minimum sheet time interval available in continuous sheet discharge in the sheet discharge device.

Growing community of inventors

Ibaraki, Japan

Kazuyuki Aoki