Ricoh Company, Ltd.

Yoshitaka Akiyama

Hiroshi Kato

Hirotaka Kobayashi

Ken Onodera

Junichi Terai

Yoshinari Suzuki

Honriku Jo

Kazuki Yasu

Yukihito Niino

Seiya Murata

Yasuyuki Horie

Mitsuru Kawakami

Ryuuta Katoh

Masaki Kitamura

Kenji Maruoka

A printer includes a treatment liquid applier configured to apply a treatment liquid onto a sheet, a printing device configured to print on the sheet onto which the treatment liquid has been applied, a heater configured to heat the treatment liquid in the treatment liquid applier, and circuitry configured to control the heater according to a printing condition to print on the sheet.

Printer

An inspection apparatus includes a liquid discharge head and a first light source. The liquid discharge head is configured to discharge a transparent liquid onto a discharged object. The first light source is configured to irradiate a pattern formed by the transparent liquid discharged onto the discharged object with light having a single peak wavelength to cause a difference between brightness and darkness.

Inspection apparatus and method of inspection

An image formation apparatus includes a first discharge unit to form an image on a recording medium; and a second discharge unit including a nozzle line that discharges transparent droplets on the image formed on the recording medium. The second discharge unit moves in a first direction relative to the recording medium and the nozzle line has nozzles in a second direction orthogonal to the first direction. After the image formation, the second discharge unit discharges the transparent droplets from the nozzles spaced at m&#x2212;1 nozzle intervals to form a row of dots in the second direction, and repeats the forming while moving to form m rows in the first direction, such that the dots in the rows are formed at m&#x2212;1 nozzle intervals and positions of the dots between n-th and n&#x2212;1-th rows are displaced together by one nozzle in the second direction.

Image formation apparatus, method for examining discharge of transparent droplets, and program for examining discharge of transparent droplets

An image forming apparatus discharges ink onto a recording medium to form an image on a surface of the recording medium. The image forming apparatus includes a preprocessing unit that applies preprocess liquid on the surface of the recording medium before the image is formed; and a postprocessing unit that applies postprocess liquid, which is different from the preprocess liquid, onto the recording medium after the image is formed. An application quantity of the preprocess liquid is determined based at least on a kind of the ink, and an application quantity of the postprocess liquid is determined based at least on the kind of the ink.

Image forming apparatus, image forming system, image forming method and printing method of printed matter

A liquid containing tank for containing a liquid to be supplied to a liquid-jet head. The liquid containing tank includes a containing part containing the liquid supplied from the outside; and a supply channel separated from the containing part by a partition wall rising from the bottom surface of the containing part and supplying the liquid from the containing part to the liquid-jet head. The containing part includes a first region and a second region, the flow speed of the liquid in the first region of the containing part is lower than the flow speed of the liquid in the second region of the containing part, and the horizontal cross sectional area of the first region of the containing part is less than the horizontal cross sectional area of the second region of the containing part.

Liquid containing tank, liquid-jet head unit, and image forming apparatus

An ink ejection head unit includes a head that ejects ink drops from plural two nozzles. The head includes a common liquid chamber connected to the plural nozzles. The common liquid chamber has a supply opening and an ejection opening. A tank is connected to the head and includes an ink containing section that contains ink to be supplied to the head. Also included is a supply path to supply the ink from the ink containing section to the supply opening of the head. An ejection path is provided to eject the ink ejected from the ejection opening of the head to an outside of the ink ejection head unit. A communication path is also provided to communicate the highest section of a seal of the containing section with the ejection path higher than the highest section of the seal. A fluid resistance of the communication path is larger than the total fluid resistance of a path starting from the supply opening to the ejection opening.

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Kanagawa, Japan

Yoshitaka Akiyama