Canon Kabushiki Kaisha

Yusuke Nakaya

Ryosuke Sato

Kengo Nieda

Kota Uchida

Ippei Tsushima

Atsushi Sakamoto

Toshiki Takeuchi

Futoshi Hirose

Susumu Hirosawa

Masahiro Sugimoto

Masato Izumi

Shinya Asano

Takeshi Murase

Takuto Moriguchi

Ryosuke Araki

Kanto Kurasawa

Kenji Sugiyama

Yuichiro Yanagi

Kohei Fukui

Shunya Sunouchi

Mika Masuda

An inkjet printing apparatus includes a printing unit to print on a printing medium and a drying unit to dry the printing medium. The drying unit includes an air blower having an entry and an exit, a heater to heat air from the blower exit, a casing, first and second collection paths, and an exhaust amount regulator as a regulation value disposed in each of the first and second collection paths. The casing includes a first portion to communicate with the heater, and includes a second portion to communicate with the first portion and to pass the printing medium through the second portion. The exhaust amount regulator switches between a first regulation state in which air circulates through the first portion and the first collection path and a second regulation state in which air circulates through the second portion and the second collection path.

Printing apparatus having drying unit and drying control method

A printing apparatus, which applies ink to a target print medium to form an image by a print unit, includes a plurality of temperature regulation units juxtaposed in a conveyance direction of the target print medium and each configured to regulate a temperature of the target print medium, a plurality of measurement units each configured to measure the temperature of the target print medium, and a control unit configured to make a temperature regulation capability of each temperature regulation unit variable, wherein each temperature regulation unit regulates temperature in a widthwise direction of the target print medium, each measurement unit measures the temperature in the widthwise direction of the target print medium, and the control unit controls the plurality of temperature regulation units based on the measured temperatures.

Printing apparatus

A printing apparatus includes a printing unit configured to form an ink image by discharging ink on a medium, and a heating unit configured to heat the ink image on the medium. The heating unit includes a heat generating unit configured to generate radiant heat, a reflecting unit that includes a reflecting surface configured to reflect the radiant heat of the heat generating unit, and a cooling unit configured to cool the reflecting surface by supplying a gas to the reflecting surface.

Printing apparatus and heating device

A printing apparatus according to an embodiment of this invention brings, out of a cleaning unit that cleans a transfer member in contact with a transfer member and an application unit that applies a reactive liquid with ink to the transfer member, the cleaning unit into contact with the transfer member to clean the transfer member by the cleaning unit at the start of the printing operation. Alternatively, out of the application unit and an absorbing unit that absorbs a liquid component from the reactive liquid applied by the application unit in contact with the transfer member, the printing apparatus brings the application unit into contact with the transfer member to apply the reactive liquid by the application unit.

Inkjet printing apparatus

A printing apparatus includes a transfer member that rotates, a printhead configured to form an image on the transfer member, and a transfer unit configured to transfer, to a print medium, the image formed on the transfer member. A detection unit is configured to detect a surface condition of the transfer member, and a specifying unit is configured to specify a region of the transfer member in which the surface condition is poor, based on a detection result output by the detection unit. In addition, a prohibiting unit is configured to prohibit image formation by the printhead for the region of the transfer member, specified by the specifying unit, for which the surface condition is poor.

Printing apparatus that specifies a region of a transfer member having a poor surface condition and prohibits printing in the region, and related print control method

An inkjet printing apparatus includes a printhead configured to form an image by discharging ink to a transfer member, a transfer unit configured to transfer the image from the transfer member to a print medium, and an application unit configured to apply a first liquid to the transfer member prior to formation of the image by the printhead. The inkjet printing apparatus also includes a first drying unit configured to dry the first liquid applied to the transfer member by the application unit by blowing air using a first air blower before the ink is discharged by the printhead to the transfer member.

Inkjet printing apparatus and related printing method in which a liquid applied to a transfer member is dried before ink is discharged by a printhead

An inkjet printing apparatus includes a transfer member, a printhead, a heating unit, and a transfer unit. A cooling unit, provided upstream of the printhead with respect to a rotation direction of the transfer member, cools down the transfer member, and a first measurement unit, provided around the transfer member, between the printhead and the cooling unit, measures a temperature of the transfer member. In addition, a second measurement unit, provided around the transfer member, between the heating unit and the transfer unit, measures a temperature of the transfer member. A control unit controls the cooling unit based on the temperature measured by the first measurement unit, and controls the heating unit based on the temperature measured by the second measurement unit.

Inkjet printing apparatus and related temperature control method that control cooling and heating of a transfer member

A printing apparatus includes a transfer member that rotates, a printhead that forms an image on the transfer member, and a transfer unit that transfers the image to a print medium. An application unit, provided at a downstream side of an area, at which the transfer unit transfers the image to the print medium, in a rotation direction of the transfer member, applies a cleaning liquid to a region on the transfer member after the image is transferred to the print medium. In addition, a collecting unit, provided between the printhead and the application unit, in the rotation direction of the transfer member, includes a collection roller that rotates in contact with the transfer member, in a direction opposite to the rotation direction of the transfer member, for collecting the cleaning liquid applied to the transfer member by the application unit.

According to an embodiment of the present invention, an inkjet printing apparatus capable of controlling temperatures of a transfer member and a printhead properly, and printing a high-quality image is provided. More specifically, in an inkjet printing apparatus that includes a transfer member, a printhead configured to discharge ink to form an image on the transfer member, and a transfer unit configured to transfer the image on the transfer member to a print medium, the following control is performed. That is, the transfer member is heated, a temperature of the heated transfer member is measured, and a temperature of the printhead is adjusted based on the measured temperature.

Inkjet printing apparatus and temperature control method thereof

When fixing is not necessary in a printing apparatus including a fixing unit, a sheet to be conveyed is allowed to avoid the fixing unit. Specifically, a fixing unit-bypass path is provided on a conveying path corresponding to the fixing unit. Further, when a surface treatment material is not applied to a sheet from a surface treatment material applying head, that is, when fixing processing is not performed by the fixing unit, a sheet is conveyed along a fixing unit-bypass path. Since a sheet is conveyed along an bypass path when fixing processing is not performed as described above, it is possible to prevent a sheet from being affected by heat or the like while the sheet passes through the fixing unit.

Growing community of inventors

Inagi, Japan

Yusuke Nakaya