Canon Kabushiki Kaisha

Sae Mogi

Hiroshi Taira

Kazuo Suzuki

Kazuhiko Sato

Hiroshi Kawafuji

Takeshi Murase

Masataka Kato

Satoshi Azuma

Taku Yokozawa

Shin Genta

Masaki Nitta

Noboru Kunimine

Shingo Nishioka

Akiko Aichi

Yoshinori Nakajima

Mitsutoshi Nagamura

Tomoki Yamamuro

Yuji Konno

Junichi Saito

Satoshi Wada

Naoko Baba

Hajime Nagai

Kei Yoshizawa

Serena Yoshikawa

Hiroto Kango

An object is to provide a technique of calculating an ejection amount of an ink in accordance with a printing head. A printing apparatus includes: a printing head including an ejection port array in which multiple ejection ports to eject an ink are arrayed; a conveyer unit configured to convey a printing medium in a conveyance direction; and a controller unit configured to control the printing head. The controller unit executes processing to obtain the printing dot number based on printing data and processing to calculate an amount of the ink used in a case of performing printing based on the printing data by using different calculation methods between a case where a first printing mode is set and a case where a second printing mode is set based on the printing dot number and an ejection amount conversion factor corresponding to a temperature of the printing head.

Printing apparatus and method of controlling printing apparatus

A recording apparatus includes recording elements to eject ink, heating elements to heat the ink, and a common wiring through which the recording elements and the heating elements are applied with a voltage. The recording apparatus determines a drive pulse applied to the recording elements based on the number of recording elements to be simultaneously driven and the number of heating elements to be simultaneously driven.

Recording apparatus and control method

An embodiment of the present invention provides an ink jet printing apparatus including: a print head including a printing element array provided with printing elements each configured to generate thermal energy required to eject an ink, a supply flow channel provided along the printing element array and configured to supply the ink to the respective printing elements, an opening provided to the supply flow channel and configured to cause the ink to flow in, and heating units provided along the supply flow channel and configured to heat the ink inside the supply flow channel; and a heating control unit configured to carry out heating control of the heating units based on a heating pattern determined based on heating intensity distribution, the heating intensity distribution representing heating intensities corresponding to the respective heating units and representing the heating intensities corresponding to positions in a direction of the printing element array.

Ink jet printing apparatus, control method, and storage medium

An inkjet printing apparatus includes a print head configured to print an image on a printing medium using a printing element configured to eject ink with thermal energy, a scanning unit configured to cause the print head to scan the printing medium, and a control unit configured to control scanning by the scanning unit and image printing by the print head based on an image printing instruction, wherein the control unit performs a control operation including executing a preliminary ejection to eject, from the print head, ink that does not contribute to image printing before an image is printed in one scanning operation, and determining an amount of ink to be ejected in the preliminary ejection based on a difference between a target temperature and a scanning start temperature, which is a temperature of the print head acquired in response to an instruction to start the one scanning operation.

Inkjet printing apparatus, control method therefor, and storage medium

A printing apparatus includes a printing unit configured to print an image on a print medium, an acquiring unit configured to acquire temperature information of the printing unit, and a control unit configured to control the printing unit so as to start relative scanning in a case where a temperature that is indicated by the temperature information has reached a print permission temperature. The print permission temperature in a first print mode whose speed at a time of a constant speed in relative scanning is a first speed is a first temperature. The print permission temperature in a second print mode whose speed at the time of the constant speed is a second speed that is faster than the first speed is a second temperature that is lower than the first temperature.

Printing apparatus, control method, and storage medium

An inkjet printing apparatus adopting short pulse heating is designed to output a uniform image without unevenness. To this end, in a serial inkjet printing apparatus, a print head is subjected to a short pulse heating treatment before each print scan is carried out. In a case where a print medium is a first print medium, the print head is heated to a first target temperature before carrying out each of the print scans. In a case where the print medium is a second print medium, the print head is heated to a second target temperature lower than the first target temperature before carrying out each of the print scans.

Inkjet printing apparatus and inkjet printing method

To provide a technology capable of appropriately suppressing deterioration in cutting accuracy of a slitter although the rigidity of a print medium changes, a printing apparatus is equipped with: a first conveyance unit configured to convey a print medium; a printing unit configured to print an image by applying ink to the print medium conveyed by the first conveyance unit; a cutting unit disposed on a downstream side in a conveyance direction in which the print medium is conveyed by the first conveyance unit and configured to cut the print medium, which is conveyed by the first conveyance unit, along the conveyance direction; and a second conveyance unit disposed on the cutting unit, and the printing apparatus includes a correction unit configured to correct a parameter related to conveyance of at least one of the first conveyance unit and the second conveyance unit, based on information about the print medium.

Printing apparatus, control method, and conveyance apparatus

An object is to provide a full-line inkjet printing apparatus and a printing method that can suppress occurrence of image degradation in the case where a conveyance roller conveys a print medium and multipass printing is performed. The maximum conveyance amount in a return route is set to be smaller than a distance between the conveyance roller and a print head.

Inkjet printing apparatus and printing method with conveying print medium in first direction and second direction and with control of nip of conveyance rollers

Provided is an inkjet printing apparatus that can reduce smears on a back surface of a print result medium by reducing accumulation of ink in a platen while reducing generation of mist. To achieve this, an ink receiving portion of a platen is provided away from a support surface by a predetermined distance, is formed in a mesh shape by laying multiple linear members, and is formed as a guide member that guides the ink received in the ink receiving portion to an ink guide holes.

Inkjet printing apparatus

A printing apparatus includes an ink tank that stores ink, a supply tube that supplies the ink from the ink tank, and a printing head that includes therein a pressure chamber arranged with an ejection port to eject the ink and performs reciprocal moving. The printing head includes a first liquid chamber that includes a connection portion with the supply channel, a second liquid chamber that communicates with the first liquid chamber by way of the pressure chamber, and a volume variable unit that changes an inner volume of the second liquid chamber.

Printing apparatus

Images with high image quality having less time-difference unevenness are outputted in an inkjet printing apparatus that performs multi-pass printing using full-line inkjet print heads. For this purpose, a CPU is capable of setting a first printing method in which an image for a unit area is printed by a specified number of printing conveyance operations and a second printing method in which an image for a unit area is printed by a smaller number than the specified number of printing conveyance operations. The CPU sets conveyance conditions such that a taken time for one printing conveyance operation of the printing conveyance operations for a unit area in the second printing method is smaller than a taken time for one successive printing conveyance operation of the printing conveyance operations for a unit area in the first printing method.

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Yokohama, Japan

Sae Mogi