Canon Kabushiki Kaisha

Katsumasa Nishikawa

Manabu Sueoka

Katsuhiko Takano

Junji Yasuda

Shigeo Takenaka

Yasushi Murayama

Makoto Shihoh

Shinji Yamamoto

Toshiaki Hirosawa

Hiroshi Ito

Kenta Udagawa

Ichiro Okumura

Isao Hayashi

Masaaki Naoi

Yoshihiro Shigemura

Kosuke Fujimoto

Shoji Kanemura

Hiroyasu Nomura

Noriyuki Chino

A temperature rise of a head due to a printing operation with a higher speed and a higher density is suppressed. To realize this, an inkjet printing head is provided in which a plurality of printing element substrates having an ejection opening array consisting of a plurality of ejection openings for ejecting ink are arranged on a support plate in a direction of the ejection opening array. The support plate includes therein a heat pipe and a flow path through which cooling liquid is flowed.

Inkjet printing head and inkjet printing apparatus

A print head having high printing reliability, in which temperature unevenness is suppressed even when printing is performed using a print head having an increased length and density of an ejection opening array, can be provided. Specifically, a temperature equalizing member such as a heat pipe and a cooling liquid passage is disposed between a first support substrate and each of second support substrates or is disposed inside the first support substrate. This makes it possible to equalize temperature among the plurality of second support substrates and further equalize temperature among the printing element substrates bonded to these support substrates. In addition, the temperature equalizing member is made close to the printing element substrate, thus making it possible to efficiently equalize temperature.

Inkjet print head and inkjet printing apparatus

An image forming apparatus includes first and second image bearing members on which toner images are to be formed, a conveying member, and a conveying member position index detecting device for detecting a conveying member position index provided on the conveying member. The apparatus also includes an image bearing member position index detecting device for detecting image bearing member position indices provided on the second image bearing member, an adjusting device for adjusting a rotational speed of the second image bearing member, and a controller for controlling the adjusting device so as to adjust a position of an image bearing member position index correspondingly to the conveying member position index, on the basis of detection results of the conveying member position index detecting device and the image bearing member position index detecting device.

Image forming apparatus with image bearing member adjustment

An inkjet recording head in which liquid supply flow paths formed in a first plate are defined by vertical walls and inclined walls. The vertical walls are perpendicular to surfaces of corresponding recording element substrates that contact the first plate. The inclined walls are inclined with respect to these surfaces. In the liquid supply flow paths that supply ink to ink supply ports of the recording element substrates arranged in one row, the inclined walls extend in a first direction along a direction of arrangement of the recording element substrates with respect to the vertical walls. In the liquid supply flow paths that supply the liquid to the liquid supply ports of the respective recording element substrates arranged in another row that is adjacent to the one row, the inclined walls extend in a second direction, which is opposite to the first direction, with respect to the vertical walls.

Inkjet recording head and inkjet recording apparatus

A liquid discharge head comprises: a discharge element substrate including a discharge port for discharging liquid and a discharge energy generating element; an electrical wiring substrate for inputting an electrical signal to the discharge energy generating element; a supporting mechanism for supporting the discharge element substrate and the electrical wiring substrate; an electrical connection portion for electrically connecting the discharge element substrate with the electrical wiring substrate; a sealant coated on the electrical connection portion; and a film-like member coating the electrical connection portion along the shape of the electrical connection portion through the sealant. Thus, the liquid discharge head resultingly includes the electrical connection portion on which the height of the sealant is suppressed and lowered sufficiently so as to prevent a problem that the electrical connection portion is damaged and/or exposed due to its height.

Liquid discharge head, and method of manufacturing liquid discharge head

An apparatus is capable of securely cleaning foreign matter, such as ink, attached to a discharge port surface with good efficiency, even in the case of a broad discharge port surface such as in a full-line type apparatus, and capable of preventing a discharge defect of the ink or deviation in a discharge direction, so as to perform satisfactory recording. The apparatus includes: an absorbing roller, formed of a rotatable roller-shaped porous absorbing material, for wiping/removing foreign matter, such as ink, attached to a discharge port surface, and wipers, formed of plate-shaped rubber-like elastic materials, for sweeping/removing the foreign matter attached to the discharge port surface. The absorbing roller is moved ahead when both the absorbing roller and the wiper are brought into contact with the discharge port surface and moved in an arrangement direction of discharge ports along the discharge port surface.

Ink jet recording apparatus having an ink absorbing member and a wiping member

The present invention provides an image forming apparatus for forming an image on a sheet material, comprising a first sheet material conveying rotary member, a second sheet material conveying rotary member, and a displacement mechanism for displacing the first and second sheet material conveying rotary members so that a first condition that the first sheet material conveying rotary member is in a position where it can be contacted with the sheet material and the second sheet material conveying rotary member is in a position where it is not contacted with the sheet material and a second condition that the second sheet material conveying rotary member is in a position where it can be contacted with the sheet material and the first sheet material conveying rotary member is in a position where it is not contacted with the sheet material can be selected.

Growing community of inventors

Tokyo, Japan

Katsumasa Nishikawa