Canon Kabushiki Kaisha

Hiroaki Noaki

Shigeru Yoshimura

Kenji Kurita

Masakazu Ozawa

Eiichi Motai

Toshimitsu Hirakue

Masanori Morita

An ink tank is provided with a plurality of ink retaining units having given ink retaining capacities to retain a plurality of different ink, a housing to constitute the ink retaining units and a plurality of ink supply units to let out ink externally corresponding to the ink retaining units. In this ink tank, each ink selected suitably for the kind of recording data to be used is retained in each of the plural ink retaining units, respectively, irrespective of given ink retaining capacities, and the housing is provided with an information indication portion to indicate such kind of recording data. With the ink tank thus structured, the user can easily select an ink tank best suited for a printing pattern as desired, thus making it possible to utilize the ink tank more economically, and print on a designated number of recording sheets assuredly.

Ink tank and ink jet cartridge

A roller comprises a rotary shaft, an outer peripheral wall member for defining an outer peripheral surface to be contacted with a sheet, and a support member for supporting the outer peripheral wall member so that the outer peripheral wall member surrounds the rotary shaft. The support member defines a space between the rotary shaft and the outer peripheral wall member and supports the outer peripheral wall member with maintaining a condition that the outer peripheral wall member is deformed to swell radially outwardly.

Sheet-supplying roller recording device

An information recording method comprises the steps of storing image information, judging the printing conditions related to the printing quality, changing the dot pattern which is utilized for the formation of the stored image information on a recording medium from the stored dot pattern in the case where the printing conditions are judged by the aforesaid judgment to degrade the printing quality, and storing the image information by the dot pattern thus changed, hence making it possible to implement a high quality printing of illustrations, and others suited for the quality of papers used, ambient conditions, object printing data, and the type of object printers.

Growing community of inventors

Sakae-machi, Japan

Hiroaki Noaki